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Tipper HJ, Stanton IC, Payne RA, Read DS, Singer AC. Do storm overflows influence AMR in the environment and is this relevant to human health? A UK perspective on a global issue. WATER RESEARCH 2024; 260:121952. [PMID: 38906083 DOI: 10.1016/j.watres.2024.121952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/14/2024] [Accepted: 06/15/2024] [Indexed: 06/23/2024]
Abstract
Antimicrobial resistance (AMR) is a global public health threat, and the environment has been identified as an important reservoir for resistant microorganisms and genes. Storm overflows (SOs) discharge wastewater and stormwater, and are found throughout many wastewater networks. While there are no data currently showing the impact of SOs on the environment with respect to AMR in the UK, there is a small but growing body of evidence globally highlighting the potential role of SOs on environmental AMR. This review aims to provide an overview of the current state of SOs, describe global data investigating the impact of SOs on environmental AMR, and discuss the implications of SOs regarding AMR and human health. In addition, the complexities of studying the effects of SOs are discussed and a set of priority research questions and policy interventions to tackle a potentially emerging threat to public health are presented.
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Affiliation(s)
- Holly J Tipper
- UK Centre for Ecology & Hydrology, Wallingford OX10 8BB, England.
| | - Isobel C Stanton
- UK Centre for Ecology & Hydrology, Wallingford OX10 8BB, England
| | - Rachel A Payne
- UK Centre for Ecology & Hydrology, Wallingford OX10 8BB, England
| | - Daniel S Read
- UK Centre for Ecology & Hydrology, Wallingford OX10 8BB, England
| | - Andrew C Singer
- UK Centre for Ecology & Hydrology, Wallingford OX10 8BB, England
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2
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Grzegorzek M, Wartalska K, Kowalik R. Occurrence and sources of hormones in water resources-environmental and health impact. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:37907-37922. [PMID: 38772997 PMCID: PMC11189324 DOI: 10.1007/s11356-024-33713-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 05/14/2024] [Indexed: 05/23/2024]
Abstract
Within recent years, hormones have become emergent contaminants in the water environment. They easily accumulate in living organisms which in effect leads to numerous health problems (endocrine-disrupting mechanism is one of the most known toxic effects). Microbial resistance to antibiotics also became one of the emergent issues related to hormone presence. It was shown that the most common in the environment occur estrogens (E1, E2, E3, and EE2). It has been proven that large amounts of hormones are released from aquaculture as well as from wastewater treatment plants (due to the relatively low separation efficiency of conventional wastewater treatment processes). Within the article's scope, the literature review was performed. The analysis was regarding the characterization of the hormone substances present in the environment, their influence on living organisms and the environment, as well as its potential sources classification.
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Affiliation(s)
- Martyna Grzegorzek
- Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Wybrzeze Stanisława Wyspianskiego 27, 50-370, Wroclaw, Poland
| | - Katarzyna Wartalska
- Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Wybrzeze Stanisława Wyspianskiego 27, 50-370, Wroclaw, Poland.
| | - Robert Kowalik
- Faculty of Environmental Engineering, Geodesy and Renewable Energy, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314, Kielce, Poland
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3
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Wu JL, Liu ZH, Ma QG, Wan YP, Dang Z, Liu Y, Liu Y. Combined collection systems of sewage and rainfall runoff seriously affect the spatial distributions of natural estrogens and their conjugates in river water: Insights from the Pearl River of China. WATER RESEARCH 2024; 256:121588. [PMID: 38636120 DOI: 10.1016/j.watres.2024.121588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 03/28/2024] [Accepted: 04/07/2024] [Indexed: 04/20/2024]
Abstract
So far, little has been known about how the combined collection systems of sewage and rainfall runoff (CCSs) affect emerging contaminants in river water. To fill up the knowledge gap, this study was conducted to investigate the spatial distributions of three natural estrogens (NEs, i.e., estrone (E1), 17β-estradiol (E2) and estriol (E3)) and their conjugates (C-NEs) in the Pearl River in the wet and dry seasons. Results showed that the respective average concentrations of NEs and C-NEs at different locations alongside the Pearl River in the wet season were 7.3 and 1.8 times those in the dry season. Based on estrogen equivalence (EEQ), the average estimated EEQ level in the Pearl River waters in the wet season was nearly 10 times that in the dry season. These seemed to imply that the CCSs in the wet season not only cause untreated sewage into the receiving water body, but greatly decrease the removal efficiency of NEs and C-NEs in wastewater treatment plant. Furthermore, the estimated annual loads of E1, E2, and E3 to the Pearl River in the wet season accounted for about 88.6 %, 100 %, and 99.3 % of the total annual loads. Consequently, this work for the first time demonstrated that the CCSs in cities with high precipitation are unfavorable for controlling of emerging contaminants.
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Affiliation(s)
- Jia-Le Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Ze-Hua Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China; Key Lab Pollution Control & Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, Guangdong, China; Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, Guangzhou, 510006, Guangdong, China; Guangdong Provincial Engineering and Technology Research Center for Environment Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou, 510006, Guangdong, China.
| | - Qing-Guang Ma
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Yi-Ping Wan
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Zhi Dang
- Key Lab Pollution Control & Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, Guangdong, China
| | - Yun Liu
- South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou, 510655, China
| | - Yu Liu
- Engineering Laboratory of Low-Carbon Unconventional Water Resources Utilization and Water Quality Assurance, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
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4
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Perry WB, Ahmadian R, Munday M, Jones O, Ormerod SJ, Durance I. Addressing the challenges of combined sewer overflows. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 343:123225. [PMID: 38151091 DOI: 10.1016/j.envpol.2023.123225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/18/2023] [Accepted: 12/23/2023] [Indexed: 12/29/2023]
Abstract
Europe's ageing wastewater system often combines domestic sewage with surface runoff and industrial wastewaters. To reduce the associated risk of overloading wastewater treatment works during storms, and to prevent wastewater backing-up into properties, Combined Sewer Overflows (CSOs) are designed into wastewater networks to release excess discharge into rivers or coastal waters without treatment. In view of growing regulatory scrutiny and increasing public concern about their excessive discharge frequencies and potential impacts on environments and people, there is a need to better understand these impacts to allow prioritisation of cost-effective solutions.We review: i) the chemical, physical and biological composition of CSOs discharges; ii) spatio-temporal variations in the quantity, quality and load of overflows spilling into receiving waters; iii) the potential impacts on people, ecosystems and economies. Despite investigations illustrating the discharge frequency of CSOs, data on spill composition and loading of pollutants are too few to reach representative conclusions, particularly for emerging contaminants. Studies appraising impacts are also scarce, especially in contexts where there are multiple stressors affecting receiving waters. Given the costs of addressing CSOs problems, but also the likely long-term gains (e.g. economic stimulation as well as improvements to biodiversity, ecosystem services, public health and wellbeing), we highlight here the need to bolster these evidence gaps. We also advocate no-regrets options to alleviate CSO problems taking into consideration economic costs, carbon neutrality, ecosystem benefit and community well-being. Besides pragmatic, risk-based investment by utilities and local authorities to modernise wastewater systems, these include i) more systemic thinking, linking policy makers, consumers, utilities and regulators, to shift from local CSO issues to integrated catchment solutions with the aim of reducing contributions to wastewater from surface drainage and water consumption; ii) broader societal responsibilities for CSOs, for example through improved regulation, behavioural changes in water consumption and disposal of waste into wastewater networks, and iii) greater cost-sharing of wastewater use.
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Affiliation(s)
- William Bernard Perry
- Water Research Institute, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Reza Ahmadian
- School of Engineering, Cardiff University, Cardiff, CF10 3AX, UK
| | - Max Munday
- Cardiff Business School, Cardiff University, Cardiff, CF10 3AX, UK
| | - Owen Jones
- School of Mathematics, Cardiff University, Cardiff, CF10 3AX, UK
| | - Steve J Ormerod
- Water Research Institute, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK
| | - Isabelle Durance
- Water Research Institute, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, UK.
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5
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Nguyen MT, Phuong NN, Saad M, Tassin B, Gillet T, Guérin-Rechdaoui S, Azimi S, Rocher V, Gasperi J, Dris R. Microplastic accumulation in sewer sediments and its potential entering the environment via combined sewer overflows: a study case in Paris. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:10501-10507. [PMID: 38196043 DOI: 10.1007/s11356-023-31734-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/19/2023] [Indexed: 01/11/2024]
Abstract
During wet weather events, combined sewer overflows (CSOs) transfer large amount of particulate matter and associated pollutants into surrounding water bodies, thereby deteriorating the recipients' ecological health. Resuspension of sewer sediments during these events contributes significantly to pollution level of these discharges. However, how much this in-sewer process contributes to CSOs' quality regarding microplastic (MP) pollution is little known. Therefore, an investigation on sewer deposits inside the Parisian combined sewer network was carried out. The study found high MP concentrations stored in this matrix, ranging from 5 × 103 to 178 × 103 particle/kg dry weight. Polymer composition is similar to what found in raw wastewater, containing a high proportion of polyethylene and polypropylene. Thus, the results indicated the persistence of MPs in sewer network during transport during dry weather periods to treatment facilities. Once resuspension of sewer deposits happens, MPs can be released into water flow and get discharged along with CSOs. This highlights another potential pathway of MPs into freshwater environment.
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Affiliation(s)
- Minh Trang Nguyen
- LEESU, Ecole Des Ponts ParisTech, Université Paris Est Créteil, Marne-La-Vallée, France.
| | - Ngoc Nam Phuong
- Université Gustave Eiffel-Laboratoire Eau Environnement (LEE)-Allée Des Ponts Et Chaussées, 44344, Bouguenais, France
| | - Mohamed Saad
- LEESU, Ecole Des Ponts ParisTech, Université Paris Est Créteil, Marne-La-Vallée, France
| | - Bruno Tassin
- LEESU, Ecole Des Ponts ParisTech, Université Paris Est Créteil, Marne-La-Vallée, France
| | - Thomas Gillet
- Section de L'Assainissement de Paris, Subdivision Contrôle Des Eaux, 17 Rue Delesseux, 75019, Paris, France
| | - Sabrina Guérin-Rechdaoui
- Syndicat Interdépartemental Pour L'Assainissement de L'Agglomération Parisienne (SIAAP), Direction de L'innovation, 82 Avenue Kléber, 92700, Colombes, France
| | - Sam Azimi
- Syndicat Interdépartemental Pour L'Assainissement de L'Agglomération Parisienne (SIAAP), Direction de L'innovation, 82 Avenue Kléber, 92700, Colombes, France
| | - Vincent Rocher
- Syndicat Interdépartemental Pour L'Assainissement de L'Agglomération Parisienne (SIAAP), Direction de L'innovation, 82 Avenue Kléber, 92700, Colombes, France
| | - Johnny Gasperi
- Université Gustave Eiffel-Laboratoire Eau Environnement (LEE)-Allée Des Ponts Et Chaussées, 44344, Bouguenais, France
| | - Rachid Dris
- LEESU, Ecole Des Ponts ParisTech, Université Paris Est Créteil, Marne-La-Vallée, France
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Furrer V, Mutzner L, Ort C, Singer H. Micropollutant concentration fluctuations in combined sewer overflows require short sampling intervals. WATER RESEARCH X 2023; 21:100202. [PMID: 38098880 PMCID: PMC10719572 DOI: 10.1016/j.wroa.2023.100202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/07/2023] [Accepted: 09/09/2023] [Indexed: 12/17/2023]
Abstract
Combined sewer overflows (CSOs) are an important pathway of organic micropollutants from urban areas to open water bodies. Understanding the temporal dynamics of these micropollutants during overflow events is crucial for applying appropriate sampling methods and implementing effective management strategies. Yet, little is known about the dynamics of micropollutants in CSOs, because most studies report concentrations from single grab samples or event mean concentrations (EMCs). With unique high temporal resolution measurements (3 min), we show the real dynamics of polar organic micropollutants in CSOs of one small (2,700 people: P) and one large (159,000 P) urban catchment, for two micropollutant categories: (i) 33 micropollutants in municipal wastewater and (ii) 13 micropollutants from urban surface runoff. The concentration dynamics depend on the substance source and the catchment size. Indoor substances such as pharmaceuticals show high temporal dynamics with changes of 1 to 2 orders of magnitude within 9 min in the CSO of the small catchment. In contrast, outdoor substances at the small catchment and all substances at the large catchment display considerably lower variation. We tested various time-proportional sampling strategies to assess the range of error when estimating EMCs. We recommend an interval of 3 min to capture the dynamics of indoor substances in CSOs from small catchments. The results highlight that both future monitoring campaigns and the planning and management of urban wet-weather treatment systems will benefit from high temporal sampling resolutions, not only to understand dynamics but also to minimize errors of estimated EMCs.
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Affiliation(s)
- Viviane Furrer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland
- Institute of Civil, Environmental and Geomatic Engineering, ETH Zürich, 8093, Zurich, Switzerland
| | - Lena Mutzner
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland
| | - Christoph Ort
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland
| | - Heinz Singer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600, Dübendorf, Switzerland
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7
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Spill C, Ditzel L, Gassmann M. Small villages and their sanitary infrastructure-an unnoticed influence on water quantity and a threat to water quality in headwater catchments. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1482. [PMID: 37971672 PMCID: PMC10654200 DOI: 10.1007/s10661-023-12051-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 10/27/2023] [Indexed: 11/19/2023]
Abstract
In rural catchments, villages often feature their own, separate urban water infrastructure, including combined sewer overflows (CSOs) or wastewater treatment plants (WWTPs). These point sources affect the water quantity and quality of the receiving low order streams. However, the extent of this impact is rarely monitored. We installed discharge and water quality measurements at the outlet of two small, neighbouring headwater catchments, one that includes a village, a WWTP, and two CSOs, while the other is predominantly influenced by agricultural activities. We also deployed electrical conductivity (EC) loggers at the CSOs to accurately detect discharge times. Discharge from the WWTP and CSOs led to higher peak flows and runoff coefficients during events. Less dilution of EC and increasing ammonium-N (NH4 - N) and ortho-phosphorus (oPO4 - P) concentrations indicate a significant contribution of poorly treated wastewater from the WWTP. During CSO events, water volumes and nutrient loads were clearly elevated, although concentrations were diluted, except for nitrite-N (NO2 - N) and particulate phosphorus (PP). Baseflow nitrate-N (NO3 - N) concentrations were diluted by the WWTP effluent, which led to considerably lower concentrations compared to the more agriculturally influenced stream. Concentrations of oPO4 - P, NH4 - N, and NO2 - N, which are most likely to originate from the WWTP, vary throughout the year but are always elevated. Our study shows the major and variable impact rural settlements can have on stream hydrology and water quality. Point sources should be monitored more closely to better understand the interaction of natural catchment responses and effects caused by sanitary infrastructure.
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Affiliation(s)
- Caroline Spill
- Department of Hydrology and Substance Balance, University of Kassel, Kassel, Germany.
| | - Lukas Ditzel
- Department of Hydrology and Substance Balance, University of Kassel, Kassel, Germany
| | - Matthias Gassmann
- Department of Hydrology and Substance Balance, University of Kassel, Kassel, Germany
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8
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Bertels D, De Meester J, Dirckx G, Willems P. Estimation of the impact of combined sewer overflows on surface water quality in a sparsely monitored area. WATER RESEARCH 2023; 244:120498. [PMID: 37639989 DOI: 10.1016/j.watres.2023.120498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/24/2023] [Accepted: 08/17/2023] [Indexed: 08/31/2023]
Abstract
Combined sewer overflows (CSOs) can have a severe negative, local impact on surface water systems. To assure good ecological surface water quality and drinking water production that meets the demands, the impact of sewer system overflows on the surrounding water bodies for current and future climate conditions needs to be assessed. Typically, integrated, detailed hydrological and hydrodynamic water quantity and quality models are used for this purpose, but often data and computational resource requirements limit their applicability. Therefore, an alternative computationally efficient, integrated water quantity and quality model of sewer systems and their receiving surface waters is proposed to assess the impact of CSOs on surface water quality in a sparsely observed area. A conceptual model approach to estimate CSO discharges is combined with an empirical model for estimating CSO pollutant concentrations based on waste water treatment plant influent observations. Both methods are compared with observations and independent results of established reference methods as to evaluate their performance. The methodology is demonstrated by modelling the current impact of CSOs on the water abstraction area of a major drinking water production centre in Flanders, Belgium. It is concluded that the proposed conceptual models achieve similar results for daily WWTP effluent and CSO frequency, whereby the accumulated CSO volume is similar to more detailed full hydrodynamic models. Further, the estimated pollutant concentrations correspond with another dataset based on high resolution sampled overflows. As a result, the proposed computational efficient method can give insights in the impact of CSOs on the water quality at a catchment level and can be used for planning monitoring campaigns or performing analyses of e.g. the current and future water availability for a data scarce areas.
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Affiliation(s)
- Daan Bertels
- KU Leuven, Department of Civil Engineering, Hydraulics and Geotechnics Section, Kasteelpark Arenberg 40 - box 2448, Leuven 3001, Belgium.
| | - Joke De Meester
- KU Leuven, Department of Civil Engineering, Hydraulics and Geotechnics Section, Kasteelpark Arenberg 40 - box 2448, Leuven 3001, Belgium
| | - Geert Dirckx
- Aquafin NV, R & D, Dijkstraat 8, Aartselaar 2630, Belgium
| | - Patrick Willems
- KU Leuven, Department of Civil Engineering, Hydraulics and Geotechnics Section, Kasteelpark Arenberg 40 - box 2448, Leuven 3001, Belgium
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9
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Baynes A, Lange A, Beresford N, Bryden E, Whitlock K, Tyler CR, Jobling S. Endocrine Disruption Is Reduced but Still Widespread in Wild Roach ( Rutilus rutilus) Living in English Rivers. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:12632-12641. [PMID: 37595157 DOI: 10.1021/acs.est.3c02854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
Abstract
Endocrine disruption of wild fish, primarily resulting in the feminization of males, has been reported in English river sites for several decades. Estrogenic activity emanating from wastewater treatment works (WwTW) has been conclusively demonstrated to be the main driver of these feminized phenotypes. Here, we revisit 10 English river sites previously surveyed in the late 1990s and early 2000s to assess how the frequency and severity of feminization now compare with the historical surveys. In the contemporary assessment, 60% of the sites revisited still showed endocrine disruption at the tissue organization level (oocytes present in otherwise male gonads; intersex) and 90% of sites had average male plasma vitellogenin concentrations (female-specific yolk protein; a sensitive biomarker of estrogen exposure) above natural baseline levels. In contrast to the historic surveys, none of the males sampled in the contemporary survey had ovarian cavities. At one of the larger WwTW, improvements to treatment technology may have driven a significant reduction in intersex induction, whereas at several of the smaller WwTW sites, the frequencies of feminization did not differ from those observed in the late 1990s. In conclusion, we show that although the severity of feminization is now reduced at many of the revisited sites, endocrine-disrupting chemicals are still impacting wild fish living downstream of WwTW in England.
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Affiliation(s)
- Alice Baynes
- Environmental Sciences, College of Health, Medicine, and Life Sciences, Brunel University London, Uxbridge, Middlesex UB8 3PH, U.K
| | - Anke Lange
- Biosciences, Faculty of Health and Life Sciences, University of Exeter, Exeter EX4 4QD, U.K
| | - Nicola Beresford
- Environmental Sciences, College of Health, Medicine, and Life Sciences, Brunel University London, Uxbridge, Middlesex UB8 3PH, U.K
| | - Euan Bryden
- Environmental Sciences, College of Health, Medicine, and Life Sciences, Brunel University London, Uxbridge, Middlesex UB8 3PH, U.K
| | - Katie Whitlock
- Environment Agency, Horizon House, Deanery Road, Bristol BS1 5AH, U.K
| | - Charles R Tyler
- Biosciences, Faculty of Health and Life Sciences, University of Exeter, Exeter EX4 4QD, U.K
| | - Susan Jobling
- Environmental Sciences, College of Health, Medicine, and Life Sciences, Brunel University London, Uxbridge, Middlesex UB8 3PH, U.K
- College of Business, Arts and Social Sciences, Brunel University London, Uxbridge, Middlesex UB8 3PH, U.K
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10
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Robinson RFA, Mills GA, Gravell A, Schumacher M, Fones GR. Occurrence of organic pollutants in the River Itchen and River Test-two chalk streams in Southern England, UK. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:17965-17983. [PMID: 36205867 PMCID: PMC9928825 DOI: 10.1007/s11356-022-23476-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
The River Itchen and River Test, two chalk streams in Southern England, are sites of special scientific interest. These ecosystems face a number of environmental pressures from anthropogenic inputs of organic pollutants. Hence, we investigated the occurrence of these chemicals within the two catchments. Spot water samples (1 L) were collected at nineteen sites along the catchment on two occasions (March and June 2019). Samples were extracted (HLB-L sorbent disks) and analysed using high-resolution liquid chromatography-quadrupole-time-of-flight mass spectrometry and gas chromatography-mass spectrometry. Compounds were identified against commercially available databases. Using this approach, we found 115 pharmaceutical and personal care products, 81 plant protection products and 35 industrial chemicals. This complex mixture of pollutants covered a range of physico-chemical properties and included priority substances in the EU Water Framework Directive or currently on the third Watch List. Both rivers had similar chemical profiles for both months. Herbicides and fungicides were dominant in the spring, whereas insecticides occurred more frequently in the summer. Point discharges from wastewater treatment plants were the main source of pharmaceutical and personal care products. Agricultural activities were the main contributor to the presence of plant protection products. The impact of these organic chemicals on the ecology, particularly on macroinvertebrate biodiversity, is unknown and warrants further investigation. Our suspect screening approach could guide future toxicological investigations to assess the environmental impacts of these diverse chemicals.
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Affiliation(s)
- Rosamund F A Robinson
- School of the Environment, Geography and Geosciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, UK
| | - Graham A Mills
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, White Swan Road, Portsmouth, PO1 2DT, UK
| | - Anthony Gravell
- Natural Resources Wales, Faraday Building, Swansea University, Singleton Campus, Swansea, SA2 8PP, UK
| | - Melanie Schumacher
- Natural Resources Wales, Faraday Building, Swansea University, Singleton Campus, Swansea, SA2 8PP, UK
| | - Gary R Fones
- School of the Environment, Geography and Geosciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, UK.
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11
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Gao Y, Shi X, Jin X, Wang XC, Jin P. A critical review of wastewater quality variation and in-sewer processes during conveyance in sewer systems. WATER RESEARCH 2023; 228:119398. [PMID: 36436409 DOI: 10.1016/j.watres.2022.119398] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 11/03/2022] [Accepted: 11/19/2022] [Indexed: 06/16/2023]
Abstract
In-sewer physio-biochemical processes cause significant variations of wastewater quality during conveyance, which affects the influent to a wastewater treatment plant (WWTP) and arguably the microbial community of biological treatment units in a WWTP. In wet weather, contaminants stored in sewer deposits can be resuspended and migrate downstream or be released during combined sewer overflows to the urban water bodies, posing challenges to the treatment facilities or endangering urban water quality. Therefore, in-sewer transformation and migration of contaminants have been extensively studied. The compiled results from representative research in the past few decades showed that biochemical reactions are both cross-sectionally and longitudinally organized in the deposits and the sewage, following the redox potential as well as the sequence of macromolecule/contaminant degradation. The sewage organic contents and sewer biofilm microorganisms were found to covary but more systematic studies are required to examine the temporal stability of the feature. Besides, unique communities can be developed in the sewage phase. The enrichment of the major sewage-associated microorganisms can be explained by the availability of biodegradable organic contents in sewers. The sewer deposits, including biofilms, harbor both microorganisms and contaminants and usually can provide longer residence time for in-sewer transformation than wastewater. However, the interrelationships among contaminant transformation, microorganisms in the deposits/biofilms, and those in the sewage are largely unclear. Specifically, the formation and migration of FOG (fat, oil, and grease) deposits, generation and transport of contaminants in the sewer atmosphere (e.g., H2S, CH4, volatile organic compounds, bioaerosols), transport and transformation of nonconventional contaminants, such as pharmaceuticals and personal care products, and wastewater quality variation during the biofilm rehabilitation period after damages caused by rains/storms are some topics for future research. Moreover, systematic and standardized field analysis of real sewers under dynamic wastewater discharge conditions is necessary. We believe that an improved understanding of these processes would assist in sewer management and better prepare us for the challenges brought about by climate change and water shortage.
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Affiliation(s)
- Yaohuan Gao
- Institute of Global Environmental Change, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Xuan Shi
- Institute of Global Environmental Change, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Xin Jin
- Institute of Global Environmental Change, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Xiaochang C Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi Province 710055, China
| | - Pengkang Jin
- Institute of Global Environmental Change, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China.
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12
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Breitmeyer SE, Walsh HL, Blazer VS, Bunnell JF, Burritt PM, Dragon J, Hladik ML, Bradley PM, Romanok KM, Smalling KL. Potential health effects of contaminant mixtures from point and nonpoint sources on fish and frogs in the New Jersey Pinelands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 851:158205. [PMID: 36028019 DOI: 10.1016/j.scitotenv.2022.158205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
Aquatic ecosystems convey complex contaminant mixtures from anthropogenic pollution on a global scale. Point (e.g., municipal wastewater) and nonpoint sources (e.g., stormwater runoff) are both drivers of contaminant mixtures in aquatic habitats. The objectives of this study were to identify the contaminant mixtures present in surface waters impacted by both point and nonpoint sources, to determine if aquatic biota (amphibian and fish) health effects (testicular oocytes and parasites) occurred at these sites, and to understand if differences in biological and chemical measures existed between point (on-stream) and nonpoint sources (off-stream). To accomplish this, water chemistry, fishes, and frogs were collected from 21 sites in the New Jersey Pinelands, United States. Off-stream sites consisted of 3 reference and 10 degraded wetlands. On-stream sites consisted of two reference lakes and six degraded streams/lakes (four sites above and two sites below wastewater outfalls). Surface water was collected four times at each site and analyzed for 133 organic and inorganic contaminants. One native and five non-native fish species were collected from streams/lakes and native green frogs from wetlands (ponds and stormwater basins). Limited differences in contaminant concentrations were observed in reference and degraded wetlands but for streams/lakes, results indicated that landscape alteration, (upland agricultural and developed land) was the primary driver of contaminant concentrations rather than municipal wastewater. Incidence of estrogenic endocrine disruption (intersex) was species dependent with the highest prevalence observed in largemouth bass and black crappie and the lowest prevalence observed in green frogs and tessellated darters. Parasite prevalence was site and species dependent. Prevalence of eye parasites increased with increasing concentrations of industrial, mycotoxin, and cumulative inorganic contaminants. These findings are critical to support the conservation, protection, and management of a wide range of aquatic species in the Pinelands and elsewhere as habitat loss, alteration, and fragmentation increase with increasing development.
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Affiliation(s)
- Sara E Breitmeyer
- U.S. Geological Survey, New Jersey Water Science Center, 3450 Princeton Pike, Suite 110, Lawrenceville, NJ 08648, USA.
| | - Heather L Walsh
- U.S. Geological Survey, Eastern Ecological Science Center, 11649 Leetown Road, Kearneysville, WV 25430, USA
| | - Vicki S Blazer
- U.S. Geological Survey, Eastern Ecological Science Center, 11649 Leetown Road, Kearneysville, WV 25430, USA
| | - John F Bunnell
- New Jersey Pinelands Commission, PO Box 359, 15 Springfield Road, New Lisbon, NJ 08064, USA
| | - Patrick M Burritt
- New Jersey Pinelands Commission, PO Box 359, 15 Springfield Road, New Lisbon, NJ 08064, USA
| | - Jeff Dragon
- New Jersey Pinelands Commission, PO Box 359, 15 Springfield Road, New Lisbon, NJ 08064, USA
| | - Michelle L Hladik
- U.S. Geological Survey, California Water Science Center, 6000 J St, Placer Hall, Sacramento, CA 95819, USA
| | - Paul M Bradley
- U.S. Geological Survey, South Atlantic Water Science Center, 720 Gracern Rd, Suite 129, Columbia, SC 29210, USA
| | - Kristin M Romanok
- U.S. Geological Survey, New Jersey Water Science Center, 3450 Princeton Pike, Suite 110, Lawrenceville, NJ 08648, USA
| | - Kelly L Smalling
- U.S. Geological Survey, New Jersey Water Science Center, 3450 Princeton Pike, Suite 110, Lawrenceville, NJ 08648, USA
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13
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Whelan MJ, Linstead C, Worrall F, Ormerod SJ, Durance I, Johnson AC, Johnson D, Owen M, Wiik E, Howden NJK, Burt TP, Boxall A, Brown CD, Oliver DM, Tickner D. Is water quality in British rivers "better than at any time since the end of the Industrial Revolution"? THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 843:157014. [PMID: 35772542 DOI: 10.1016/j.scitotenv.2022.157014] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 06/15/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
We explore the oft-repeated claim that river water quality in Great Britain is "better now than at any time since the Industrial Revolution". We review available data and ancillary evidence for seven different categories of water pollutants: (i) biochemical oxygen demand (BOD) and ammonia; (ii) heavy metals; (iii) sewage-associated organic pollutants (including hormone-like substances, personal care product and pharmaceutical compounds); (iv) macronutrients (nitrogen and phosphorus); (v) pesticides; (vi) acid deposition and (vii) other variables, including natural organic matter and pathogenic micro-organisms. With a few exceptions, observed data are scarce before 1970. However, we can speculate about some of the major water quality pressures which have existed before that. Point-source pollutants are likely to have increased with population growth, increased connection rates to sewerage and industrialisation, although the increased provision of wastewater treatment during the 20th century will have mitigated this to some extent. From 1940 to the 1990s, pressures from nutrients and pesticides associated with agricultural intensification have increased in many areas. In parallel, there was an increase in synthetic organic compounds with a "down-the-drain" disposal pathway. The 1990s saw general reductions in mean concentrations of metals, BOD and ammonia (driven by the EU Urban Waste Water Treatment Directive), a levelling out of nitrate concentrations (driven by the EU Nitrate Directive), a decrease in phosphate loads from both point-and diffuse-sources and some recovery from catchment acidification. The current picture is mixed: water quality in many rivers downstream of urban centres has improved in sanitary terms but not with respect to emerging contaminants, while river quality in catchments with intensive agriculture is likely to remain worse now than before the 1960s. Water quality is still unacceptably poor in some water bodies. This is often a consequence of multiple stressors which need to be better-identified and prioritised to enable continued recovery.
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Affiliation(s)
- M J Whelan
- University of Leicester, United Kingdom of Great Britain and Northern Ireland.
| | - C Linstead
- WWF-UK, United Kingdom of Great Britain and Northern Ireland
| | - F Worrall
- University of Durham, United Kingdom of Great Britain and Northern Ireland
| | - S J Ormerod
- Cardiff University, Water Research Institute, United Kingdom of Great Britain and Northern Ireland
| | - I Durance
- Cardiff University, Water Research Institute, United Kingdom of Great Britain and Northern Ireland
| | - A C Johnson
- UKCEH, Wallingford, United Kingdom of Great Britain and Northern Ireland
| | - D Johnson
- The Rivers Trust, United Kingdom of Great Britain and Northern Ireland
| | - M Owen
- Angling Trust, United Kingdom of Great Britain and Northern Ireland
| | - E Wiik
- Ronin Institute, United States of America
| | - N J K Howden
- University of Bristol, United Kingdom of Great Britain and Northern Ireland
| | - T P Burt
- University of Durham, United Kingdom of Great Britain and Northern Ireland
| | - A Boxall
- University of York, United Kingdom of Great Britain and Northern Ireland
| | - C D Brown
- University of York, United Kingdom of Great Britain and Northern Ireland
| | - D M Oliver
- University of Stirling, United Kingdom of Great Britain and Northern Ireland
| | - D Tickner
- WWF-UK, United Kingdom of Great Britain and Northern Ireland
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14
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Yu Y, Duan C, Li S, Peng C, Yang J, Yan K, Bi X, Zou P. Relationship between environmental pollution and economic development in late-developing regions shows an inverted V. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156295. [PMID: 35644387 DOI: 10.1016/j.scitotenv.2022.156295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
In late-developing regions, new technologies and previous experiences are applied to reduce the impact of economic development on environmental pollution in the early stages. After economic development has reached a certain level, the application of new environmental remediation technologies and methods can accelerate environmental restoration. Therefore, we hypothesized that the relationship between economic development and environmental pollution would exhibit an inverted V in late-developing regions. We examined water quality changes in 353 monitoring sections of 76 urban rivers in Kunming, southwestern China, over the last 33 years to assess the impact of economic development on river water quality. The results indicate that the relationship between the comprehensive pollution index of urban rivers and the economy shows an inverted V, supporting our hypothesis. The inverted V could be divided into four areas: an environmental self-purification area (<2170 USD); an economic development environmental destruction area (2170-5240 USD); an economic development feedback environment area (5240-11,255 USD); and an economic development promotion environment area (>11,255 USD). On the time axis of economic development, the relationship between economic development and environmental pollution is closer to an inverted U in relatively early developing regions, but the experience with and application of new technologies causes the relationship to change from an inverted U to an inverted V in relatively late-developing regions.
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Affiliation(s)
- Yadong Yu
- School of Ecology and Environmental Science & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, China; The Ecological and Environmental Monitoring Station of DEEY in Kunming
| | - Changqun Duan
- School of Ecology and Environmental Science & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, China
| | - Shiyu Li
- School of Ecology and Environmental Science & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, China.
| | - Changhui Peng
- Institute of Environment Sciences, Department of Biology Sciences, University of Quebec at Montreal, Case Postale 8888, Succ. Centre-Ville, Montreal H3C 3P8, Canada
| | - Jian Yang
- The Ecological and Environmental Monitoring Station of DEEY in Kunming
| | - Kun Yan
- The Ecological and Environmental Monitoring Station of DEEY in Kunming
| | - Xiaoyi Bi
- School of Ecology and Environmental Science & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, China
| | - Ping Zou
- School of Ecology and Environmental Science & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, China
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15
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Cheng Z, Dong Q, Yuan Z, Huang X, Liu Y. Fate characteristics, exposure risk, and control strategy of typical antibiotics in Chinese sewerage system: A review. ENVIRONMENT INTERNATIONAL 2022; 167:107396. [PMID: 35944287 DOI: 10.1016/j.envint.2022.107396] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 06/09/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
In China, the sewerage system plays an essential role in antibiotic removal; however, the fate profiles of antibiotics in sewers are not well understood, and risk identification throughout the sewerage system is inadequate. Based on the extensive detection results for typical groups of antibiotics in the discharge sources, influent and effluent from wastewater treatment plants (WWTPs), and excess sludge, a comprehensive evaluation was conducted to reveal the elimination profiles of the antibiotics, identify the fate characteristics in both sewers and WWTPs, assess the exposure risk levels, and propose a control strategy. The total concentration (based on the median concentrations of the target antibiotics) in aqueous waters was estimated to decrease from 7383.4 ng/L at the discharge source to 886.6 ng/L in the WWTP effluent, among which 69.6% was reduced by sewers and 18.4% was reduced by WWTPs. Antibiotic reduction in sewers was a combined effect of dilution, physiochemical reactions, sorption, biodegradation, and retransformation, and the A2O-MBR + ozonation process in the WWTPs exhibited superior performance in diminishing antibiotics. Notably, accumulated antibiotics in the excess sludge posed a high risk to natural environments (with a risk quotient of approximately 13.0), and the potential risk during combined sewer overflows (CSOs) was undetermined. Thus, enhanced sludge treatment techniques, accurate risk prediction, and proper precautions at CSOs are required to mitigate potential risk. A novel scheme involving an accurate estimation of discharge loads, preliminary treatment of highly concentrated discharge sources, and synergic control in sewers was proposed to eliminate antibiotics at the front end of pipes.
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Affiliation(s)
- Zhao Cheng
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Qian Dong
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Zhiguo Yuan
- Advanced Water Management Centre, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Xia Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yanchen Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
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16
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Chen Y, Shi X, Jin X, Jin P. Characteristics of overflow pollution from combined sewer sediment: Formation, contribution and regulation. CHEMOSPHERE 2022; 298:134254. [PMID: 35278453 DOI: 10.1016/j.chemosphere.2022.134254] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/26/2022] [Accepted: 03/05/2022] [Indexed: 06/14/2023]
Abstract
Sewer sediments contain high concentrations of carbon, nitrogen, and phosphorus pollutants, which can be the main source of overflow pollution due to high-velocity scouring. To elucidate the scouring overflow pollution characteristics and regulation mechanism of sewer sediment under different precipitation intensities, a sewer-storage tank linkage control experimental device was established to simulate the practical sewer overflow under different precipitation intensities and the control process of storage tank overflow pollutants. Based on the division of flow from small to large, the pollution characteristics of overflow pollutants and the contribution rate of sewer sediments to overflow pollutants were analysed. The results showed that the total load of overflow pollutants increased with an increase in rainfall intensity and were 7.58 kg, 16.54 kg, 27.42 kg, respectively. The concentration of particulate pollutants increased sharply in a short time, and the concentration of dissolved pollutants decreased at a certain dilution. Sewer sediment was the main source of overflow pollutants, contributing up to 70%. After the overflow pollutants entered the regulation and storage tank, a certain stratification phenomenon was discovered at different sedimentation times. The concentration of large particle pollutants gradually increased from top to bottom in the regulation and storage tank, and the concentration of dissolved pollutants showed no obvious difference between the layers. With an increase in rainfall intensity, the recommended regulation and storage times of overflow pollutants were within 15 min, 45-60 min, and 60 min, respectively. Finally, based on the relationship among rainfall intensity, sediment scouring thickness, regulation and storage time, a prediction formula for the regulation and storage time of overflow pollutants was obtained, which provided a basis for the regulation and treatment of subsequent overflow pollutants.
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Affiliation(s)
- Yaxin Chen
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi Province, 710055, China
| | - Xuan Shi
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi Province, 710055, China; School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710049, China
| | - Xin Jin
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi Province, 710055, China; School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710049, China
| | - Pengkang Jin
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi Province, 710055, China; School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi Province 710049, China.
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17
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Happel A, Gallagher D. Decreases in wastewater pollutants increased fish diversity of Chicago's waterways. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153776. [PMID: 35150671 DOI: 10.1016/j.scitotenv.2022.153776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 02/05/2022] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
Throughout much of the globe, rivers are used to dispatch treated and untreated wastewater to the detriment of receiving ecosystems. Surprisingly, few studies directly relate water quality variables to fish community responses in receiving waterways on timescales that encompass the incremental and compounding improvements to wastewater infrastructure over time. Chicago (Illinois, USA) represents one such city, within which sits a series of waterways whose flows are primarily controlled by effluent discharges from three large wastewater treatment plants. Random forest regressions were used to construct models which predict changes in fish species richness within the Chicago Area Waterways over a period of 35 years from data on water quality and weather. The average number of species found at any one location across the Chicago Area Waterway system increased from ~5 to ~12 between 1985 and 2019. Decreases in concentrations of variables related to wastewater effluents (i.e., phenols, fecal coliforms, and nitrogenous compounds) were identified as highly informative, allowing increases in species richness to be predicted with a relatively high accuracy (R2 ≥ 0.49). Weather variables (particularly those related to snow and freezing temperatures) were only important predictors in a section of waterway which does not receive wastewater effluent, although consistent increases in rainfall were noted for Chicago and in chloride concentrations within the waterways. Increased rainfall events and harsher winter conditions (induces greater chloride runoff) threaten the progress made to lessen the effects of wastewater on the region. Improvements to how wastewater is treated, and subsequent reductions to harmful constituents of effluents, have improved the aquatic ecosystem and are likely responsible for the increased species richness over the 35-year timeframe studied.
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Affiliation(s)
- Austin Happel
- Daniel P. Haerther Center for Conservation and Research, John G. Shedd Aquarium, Chicago, IL, USA.
| | - Dustin Gallagher
- Metropolitan Water Reclamation District of Greater Chicago, Chicago, IL, USA.
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18
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Whelan MJ, Kim J. Application of multimedia models for understanding the environmental behavior of volatile methylsiloxanes: Fate, transport, and bioaccumulation. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2022; 18:599-621. [PMID: 34375022 PMCID: PMC9293016 DOI: 10.1002/ieam.4507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/11/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Multimedia fate and transport models (MFTMs) describe how chemicals behave in the environment based on their inherent properties and the characteristics of receiving systems. We critically review the use of MFTMs for understanding the behavior of volatile methylsiloxanes (VMS). MFTMs have been used to predict the fate of VMS in wastewater treatment, rivers, lakes, marine systems, and the atmosphere, and to assess bioaccumulation and trophic transfers. More widely, they have been used to assess the overall persistence, long-range transport potential (LRTP), and the propensity for atmosphere-surface exchange. The application of MFTMs for VMS requires particularly careful selection of model inputs because the properties of VMS differ from those of most organic compounds. For example, although n-octanol/water partition coefficient (KOW ) values are high, air:water partition coefficient (KAW ) values are also high and n-octanol/air partition coefficient (KOA ) values are relatively low. In addition, organic carbon/water partition coefficient (KOC ) values are substantially lower than expectations based on KOW . This means that most empirical relationships between KOC and KOW are not appropriate. Good agreement between modeled and measured concentrations in air, sediment, and biota indicates that our understanding of environmental fate is reasonable. VMS compounds are "fliers" that principally partition to the atmosphere, implying high LRTP, although they have low redeposition potential. They are degraded in air (half-lives 3-10 days) and, thus, have low overall persistence. In water, exposure can be limited by hydrolysis, volatilization, and partitioning to sediments (where degradation half-lives are likely to be high). In food webs, they are influenced by metabolism in biota, which tends to drive trophic dilution (i.e., trophic magnification factors are often but not always <1). Key remaining uncertainties include the following: (i) the strength and direction of the temperature dependence for KOC ; (ii) the fate of atmospheric reaction products; and (iii) the magnitude of emissions to wastewater. Integr Environ Assess Manag 2022;18:599-621. © 2021 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).
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Affiliation(s)
- Michael J. Whelan
- Centre for Landscape and Climate Research, School of Geography, Geology and the EnvironmentUniversity of LeicesterLeicesterUK
| | - Jaeshin Kim
- Toxicology and Environmental Research and ConsultingThe Dow Chemical CompanyMidlandMichiganUSA
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19
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Baek SS, Yun D, Pyo J, Kang D, Cho KH, Jeon J. Analysis of micropollutants in a marine outfall using network analysis and decision tree. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150938. [PMID: 34655621 DOI: 10.1016/j.scitotenv.2021.150938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 10/08/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
The presence of micropollutants (MPs), including pharmaceutical, industrial, and pesticidal compounds, threatens both human health and the aquatic ecosystem. The development and extensive use of new chemicals have also inevitably led to the accumulation of MPs in aquatic environments. Recreational beaches are especially vulnerable to contamination, affecting humans and aquatic animals via the absorption of MPs in water during marine activities (e.g., swimming, sailing, and windsurfing). Additionally, marine outfalls in an urbanized coastal city can cause serious chemical and microbial pollution on recreational beaches, leading to an increase in adverse effects on public health and the ecological system. Therefore, the aim of this study was to, with the use of network and decision tree analyses, identify the features and factors that influence the change in MP concentrations in a marine outfall. These analyses were conducted to inspect the relationship between each MP and its hierarchical structure as well as hydrometeorological variables. Additionally, a risk analysis was conducted in this study in which the MPs were prioritized based on their optimized risk quotient values. During our monitoring of MP concentrations over time at the marine outfall, high concentrations of pharmaceutical and industrial compounds were detected when the tide level was low after rainfall. Furthermore, results of the risk analysis and the prioritization revealed that a total of 18 substances identified in our study posed a risk to the ecosystem; these include major ecotoxicologically hazardous substances such as telmisartan, mevinphos, and methiocarb. Results of the network analysis demonstrated distinct trends for pharmaceutical and industrial substances, whilst those for pesticide compounds were irregular. Additionally, the hierarchical structures for most MPs consisted of rainfall, tide level, and antecedent dry hours; this implies that these factors influence MP dynamics. These findings will be helpful for establishing chemical contamination management plans for recreational beaches in the future.
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Affiliation(s)
- Sang-Soo Baek
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Daeun Yun
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - JongCheol Pyo
- Center for Environmental Data Strategy, Korea Environment Institute, Sejong 30147, Republic of Korea
| | - Daeho Kang
- Department of Environmental Engineering, Changwon National University, Changwondaehak-ro 20, Uichang-gu, Changwon-si, Gyeongsangnam-do 51140, Republic of Korea
| | - Kyung Hwa Cho
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Junho Jeon
- Department of Environmental Engineering, Changwon National University, Changwondaehak-ro 20, Uichang-gu, Changwon-si, Gyeongsangnam-do 51140, Republic of Korea; School of Civil, Environmental and Chemical Engineering, Changwon National University, Changwon, Gyeongsangnamdo 51140, Republic of Korea.
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20
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Li Y, Zhou Y, Wang H, Jiang H, Yue Z, Zheng K, Wu B, Banahene P. Characterization and sources apportionment of overflow pollution in urban separate stormwater systems inappropriately connected with sewage. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 303:114231. [PMID: 34906833 DOI: 10.1016/j.jenvman.2021.114231] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 06/14/2023]
Abstract
In recent years, combined sewer overflow (CSO) has been identified as a significant contributor to the deterioration of the urban water environment. It is thought that remolding it to a separate sewer system is a thorough and effective method of controlling the CSO in the appropriate area. However, according to current research, the separate stormwater sewer systems will also have overflow pollution due to functional defects, damaged or inappropriately connected with sewage, which has serious consequences for the separate system's operational efficiencies and the urban water environment. The event mean concentration, first flush effect, source apportionment, and correlation analysis of variables in overflow pollution generated in three residential catchments in Nanning, China, were investigated in this study. The results showed that the event mean concentration values in drainage outlets inappropriately connected with sewage were 2-4 times higher than those in stormwater outlets, especially for NH3-N, TN, and TP. Meanwhile, more than 80% of overflow events at outlets inappropriately connected with sewage had a weak first flush or even a weak dilution effect, with peak pollutant concentrations occurring 40-60 min after the overflow began. Besides, the discharge pollution load was primarily derived from the inside of the sewer. When the rainfall was heavy, the contribution rate of sewer sediment erosion exceeded 60%, which was much higher than the contribution rate of rainfall runoff and sewage. The variability in event mean COD and TSS concentrations was primarily attributed to the antecedent dry period and rainfall intensity. The COD concentration increased from 140.7 to 277.1 mg/L with the increase of antecedent dry period from 3 to 10 days. This study could help guide the implementation of targeted measures to treat overflow pollution in urban residential catchments, as well as the development of strategies to mitigate the effects on receiving water bodies.
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Affiliation(s)
- Yiping Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yuxuan Zhou
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China.
| | - Haiying Wang
- Nanning Exploration & Survey Geoinformation Institute, Nanning, 530022, China
| | - Haizhuan Jiang
- Nanning Exploration & Survey Geoinformation Institute, Nanning, 530022, China
| | - Zhenwu Yue
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Ke Zheng
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Bin Wu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Patrick Banahene
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
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21
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Wolf Y, Oster S, Shuliakevich A, Brückner I, Dolny R, Linnemann V, Pinnekamp J, Hollert H, Schiwy S. Improvement of wastewater and water quality via a full-scale ozonation plant? - A comprehensive analysis of the endocrine potential using effect-based methods. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 803:149756. [PMID: 34492496 DOI: 10.1016/j.scitotenv.2021.149756] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/02/2021] [Accepted: 08/15/2021] [Indexed: 06/13/2023]
Abstract
Micropollutants (MPs), especially endocrine disrupting compounds (EDCs), are mainly released from WWTPs into surface water bodies and can subsequently lead to adverse effects in biota. Treatment with ozone proved to be a suitable method for eliminating such MPs. This method was implemented at the WWTP Aachen-Soers by commissioning the largest full-scale ozonation plant in Europe at the moment. Recently, effect-based methods (EBMs) have been successfully proved for compliance monitoring, e.g. estrogenic compounds. Therefore, the impact of ozone treatment on endocrine potential (agonistic and antagonistic) of treated wastewater was investigated using the ERα- and AR CALUX assays. Additionally, the impact on the receiving stream and a potential preload of the water body was assessed. Therefore, the current study could deal as a case study for small rivers being highly impacted by WWTPs. The estrogenic potential was nearly fully eliminated after ozone treatment. Contrary, the antagonistic (anti-estrogenic and anti-androgenic) potential did not show a clear elimination pattern after ozone treatment independent of the applied ozone dosage and control system. Therefore, further investigations are required regarding the antagonistic potential. Additionally, preloading of the receiving stream was found during the study period. One significant impact is a rain overflow basin (ROB) located upstream of the WWTP effluent. The highest endocrine potential was found after a ROB overflow (2.7 ng EEQ/L, 2.4 μg TMX-EQ/L, 104 μg FLU-EQ/L), suggesting that such runoff events after a heavy rainfall may act as a driver of endocrine loading to the water body. This manuscript contributes significantly to the basic understanding of the efficiency of eliminating the endocrine potential of ozone treatment by, e.g., showing that there is a further need for improving the removal efficiency of antagonistic potential. Moreover, it highlights the need to include other point sources, such as ROBs, to assess polluted surface waters comprehensively.
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Affiliation(s)
- Yvonne Wolf
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Aachen, Germany
| | - Sophie Oster
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Aachen, Germany; iES Institute for Environmental Science, University of Koblenz-Landau, Landau, Germany
| | - Aliaksandra Shuliakevich
- Department Evolutionary Ecology and Environmental Toxicology (E(3)T), Goethe-University Frankfurt, Frankfurt, Germany
| | | | - Regina Dolny
- Institute of Environmental Engineering, RWTH Aachen University, Aachen, Germany
| | - Volker Linnemann
- Institute of Environmental Engineering, RWTH Aachen University, Aachen, Germany
| | - Johannes Pinnekamp
- Institute of Environmental Engineering, RWTH Aachen University, Aachen, Germany
| | - Henner Hollert
- Department Evolutionary Ecology and Environmental Toxicology (E(3)T), Goethe-University Frankfurt, Frankfurt, Germany.
| | - Sabrina Schiwy
- Department Evolutionary Ecology and Environmental Toxicology (E(3)T), Goethe-University Frankfurt, Frankfurt, Germany
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22
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El Ghazouli K, El Khatabi J, Soulhi A, Shahrour I. Model predictive control based on artificial intelligence and EPA-SWMM model to reduce CSOs impacts in sewer systems. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:398-408. [PMID: 35050891 DOI: 10.2166/wst.2021.511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Urbanization and an increase in precipitation intensities due to climate change, in addition to limited urban drainage systems (UDS) capacity, are the main causes of combined sewer overflows (CSOs) that cause serious water pollution problems in many cities around the world. Model predictive control (MPC) systems offer a new approach to mitigate the impact of CSOs by generating optimal temporally and spatially varied dynamic control strategies of sewer system actuators. This paper presents a novel MPC based on neural networks for predicting flows, a stormwater management model (SWMM) for flow conveyance, and a genetic algorithm for optimizing the operation of sewer systems and defining the best control strategies. The proposed model was tested on the sewer system of the city of Casablanca in Morocco. The results have shown the efficiency of the developed MPC to reduce CSOs while considering short optimization time thanks to parallel computing.
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Affiliation(s)
- Khalid El Ghazouli
- Laboratoire de Génie Civil et géo-Environnement, Univ. Lille, IMT Lille Douai, Univ. Artois, Yncrea Hauts-de-France, ULR, 4515 - LGCgE, Lille F-59000, France E-mail: ; Laboratoire d'Analyse des Systèmes, Traitement de l'Information et Management Industriel, Université Mohammed V, Rabat, Morocco
| | - Jamal El Khatabi
- Laboratoire de Génie Civil et géo-Environnement, Univ. Lille, IMT Lille Douai, Univ. Artois, Yncrea Hauts-de-France, ULR, 4515 - LGCgE, Lille F-59000, France E-mail:
| | - Aziz Soulhi
- National Higher School of Mines, Agdal Rabat, Morocco
| | - Isam Shahrour
- Laboratoire de Génie Civil et géo-Environnement, Univ. Lille, IMT Lille Douai, Univ. Artois, Yncrea Hauts-de-France, ULR, 4515 - LGCgE, Lille F-59000, France E-mail:
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23
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Badawy MT, Sobeh M, Xiao J, Farag MA. Androstenedione (a Natural Steroid and a Drug Supplement): A Comprehensive Review of Its Consumption, Metabolism, Health Effects, and Toxicity with Sex Differences. Molecules 2021; 26:6210. [PMID: 34684800 PMCID: PMC8539210 DOI: 10.3390/molecules26206210] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 02/05/2023] Open
Abstract
Androstenedione is a steroidal hormone produced in male and female gonads, as well as in the adrenal glands, and it is known for its key role in the production of estrogen and testosterone. Androstenedione is also sold as an oral supplement, that is being utilized to increase testosterone levels. Simply known as "andro" by athletes, it is commonly touted as a natural alternative to anabolic steroids. By boosting testosterone levels, it is thought to be an enhancer for athletic performance, build body muscles, reduce fats, increase energy, maintain healthy RBCs, and increase sexual performance. Nevertheless, several of these effects are not yet scientifically proven. Though commonly used as a supplement for body building, it is listed among performance-enhancing drugs (PEDs) which is banned by the World Anti-Doping Agency, as well as the International Olympic Committee. This review focuses on the action mechanism behind androstenedione's health effects, and further side effects including clinical features, populations at risk, pharmacokinetics, metabolism, and toxicokinetics. A review of androstenedione regulation in drug doping is also presented.
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Affiliation(s)
- Marwa T. Badawy
- Department of Biology, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835, Egypt;
| | - Mansour Sobeh
- AgroBioSciences, Mohammed VI Polytechnic University, Lot 660, Hay Moulay Rachid, Ben-Guerir 43150, Morocco
| | - Jianbo Xiao
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China;
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo, E-36310 Vigo, Spain
| | - Mohamed A. Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr el Aini St., Cairo P.B. 11562, Egypt
- Chemistry Department, School of Sciences Engineering, The American University in Cairo, New Cairo 11835, Egypt
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24
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Polo D, Lois M, Fernández-Núñez MT, Romalde JL. Detection of SARS-CoV-2 RNA in bivalve mollusks and marine sediments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 786:147534. [PMID: 33984699 PMCID: PMC8099584 DOI: 10.1016/j.scitotenv.2021.147534] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/28/2021] [Accepted: 05/01/2021] [Indexed: 05/04/2023]
Abstract
The presence of SARS-CoV-2 in wastewater pose the question of whether this new pandemic virus could be released into watercourses and potentially continue to finally reach coastal waters. In this study, we employed two bivalve molluscan species from the genus Ruditapes as sentinel organisms to investigate the presence of SARS-CoV-2 signals in the marine coastal environment. Estuarine sediments from the natural clam banks were also analyzed. Viral RNA was detected by RT-qPCR, targeting IP4, E and N1 genomic regions. Positive samples were also subjected to a PMAxx-triton viability RT-qPCR assay in order to discriminate between intact and altered capsids, obtaining indirect information about the viability of the virus. SARS-CoV-2 RNA traces were detected in 9/12 clam samples by RT-qPCR, from which 4 were positive for two different target regions. Viral quantification ranged from <LoQ to 4.48 Log genomic copies/g of digestive tissue. Regarding the sediment samples, 3/12 were positive by RT-qPCR, but only IP4 region was successfully amplificated. Quantification values for sediment samples ranged from <LoQ to 3.60 Log genomic copies/g of sediment. RNA signals disappeared in the PMAxx-triton viability RT-qPCR assay, indicating non-infectious potential. In addition, the recently discovered human-specific gut associated bacteriophage crAssphage was also quantified as a biomarker for the presence of human-derived wastewater contamination on the study area. CrAssphage was detected in 100% of both types of samples with quantification values ranging from <LoQ to 5.94 Log gc/g digestive tissue and from <LoQ to 4.71 Log gc/g sediment. Statistical analysis also showed that quantification levels for the crAssphage in clams are significantly higher than in sediments. These findings represent the first detection of SARS-CoV-2 RNA in the marine environment, demonstrating that it can reach these habitats and make contact with the marine life.
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Affiliation(s)
- David Polo
- Department of Microbiology and Parasitology, CIBUS-Facultade de Bioloxía & Institute CRETUS, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Marta Lois
- Department of Microbiology and Parasitology, CIBUS-Facultade de Bioloxía & Institute CRETUS, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | | | - Jesús L Romalde
- Department of Microbiology and Parasitology, CIBUS-Facultade de Bioloxía & Institute CRETUS, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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25
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Zhu Q, Li X, Li G, Tang W, Li C, Li J, Zhao C, Du C, Liang X, Li W, Zhang L. New insights into restoring microbial communities by side-stream supersaturated oxygenation to improve the resilience of rivers affected by combined sewer overflows. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 782:146903. [PMID: 33848851 DOI: 10.1016/j.scitotenv.2021.146903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/13/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
Combined sewer overflows (CSOs) are a dominant contributor to urban river pollution. Therefore, reducing the environmental impacts of CSOs and improving the self-purification capacity of water bodies are essential. In this study, the side-stream supersaturation (SSS) oxygenation was applied to restore microbial function of rivers which are affected by CSOs to improve the self-purification capacity. The results showed that apart from the dissolved organic matter inputs from CSO event, the sediment had become an important contributor to pollution in the studied river. After the long-term (46 d) implementation of SSS oxygenation, dissolved oxygen and the oxidation-reduction potential of the river water increased by 98% and 238%, respectively, compared to emergency control measures implemented following individual CSO events. The NH3-N concentrations and the chemical oxygen demand also decreased by 20% and 45%, respectively. In addition, the occurrence of microbial functions related to information storage and processing, and cellular process and signaling, increased by 1.87% and 0.82% in response to SSS oxygenation, respectively, and the Shannon index of the sediment microbial community increased by more than 15%. The frequencies of genes related to nitrification and sulfur oxidation also increased by 20-450% and >50%, respectively. This research provides new insights into the ecological restoration of rivers affected by CSOs.
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Affiliation(s)
- Qiuheng Zhu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Water Sciences, Beijing Normal University, Beijing 100875, China
| | - Xiaoguang Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Guowen Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Wenzhong Tang
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Caole Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Jiaxi Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Chen Zhao
- Basin Research Center for Water Pollution Control, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Caili Du
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Xiaodan Liang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Wei Li
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Lieyu Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
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26
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Peters PE, Zitomer DH. Current and future approaches to wet weather flow management: A review. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:1179-1193. [PMID: 33393150 DOI: 10.1002/wer.1506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 12/02/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
Sewers can become hydraulically overburdened during high-intensity precipitation resulting in untreated water entering receiving streams. Combined (CSOs) and sanitary sewer overflows (SSOs) cause adverse public health and environmental impacts as well as management challenges for many wastewater utilities. This novel review presents information regarding wet weather flow regulation, impacts, and current management methods, and offers ideas for future approaches in the United States. Currently, storage followed by conventional municipal water reclamation facility treatment after precipitation events is often employed. Stand-alone alternative technologies include high-rate solids removal, rapid disinfection, filtration, and green infrastructure. However, most current stand-alone approaches do not address soluble BOD5 or emerging contaminants in stormwater and wastewater. As the needs for wet weather flow management change, future approaches should include a goal of zero overflows and achieve effluent quality as good as or better than conventional treatment. To help achieve zero overflows and complete treatment, the "peaker facility" concept is proposed. The peaker facility often remains idle but treats excess flow when needed. Considering the challenges of remaining idle for long periods, starting up quickly, and handling high flows, chemical oxidation may be an applicable peaker facility component. However, more research and development are needed to determine best practices. PRACTITIONER POINTS: Combined (CSO) and sanitary sewer overflows (SSOs) pose both environmental and public health risks as untreated water is discharged into lakes and rivers during high-intensity rain events. Current stand-alone approaches for managing or treating CSOs focus on particulate BOD/COD and solids removal, and do not typically address soluble BOD or emerging contaminants in stormwater and wastewater (including pathogens). New wet weather policies and regulations encourage more holistic approaches by wastewater utilities, and future approaches should include a zero-overflow goal for all CSOs and SSOs. To help achieve zero overflows, the concept of the "peaker facility" is proposed. Chemical oxidation may be an applicable component of peaker facilities for its short detention time and ability to remove, oxidize, or inactive water impairment-causing contaminants.
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Affiliation(s)
- Paige E Peters
- Department of Civil, Construction and Environmental Engineering, Marquette University, Milwaukee, WI, USA
| | - Daniel H Zitomer
- Department of Civil, Construction and Environmental Engineering, Marquette University, Milwaukee, WI, USA
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27
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Cooper R, David A, Kudoh T, Tyler CR. Seasonal variation in oestrogenic potency and biological effects of wastewater treatment works effluents assessed using ERE-GFP transgenic zebrafish embryo-larvae. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 237:105864. [PMID: 34118774 DOI: 10.1016/j.aquatox.2021.105864] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
Effluents from wastewater treatment works (WwTW) exhibit both temporal and spatial variation in oestrogenicity, however few studies have attempted to quantify how this variation affects biological responses in fish. Here we used an oestrogen-responsive green fluorescent protein (ERE-GFP) transgenic zebrafish (Danio rerio) to quantify oestrogenic activity and health effects for exposure to three different WwTW effluents. Endpoints measured included survival/hatching rate, GFP induction (measured in target tissues or gfp mRNA induction in whole embryos) and vtg mRNA induction in whole embryos. Exposure to one of the study effluents (at 100%), resulted in some mortality, and exposure to all three effluents (at 50% and 100%) caused decreases in hatching rates. Higher levels of vtg mRNA corresponded with higher levels of steroidal oestrogens in the different effluents, with lowest-observed-effect concentrations (LOECs) between 31 ng/L and 39 ng/L oestradiol equivalents (EEQs). Tissue patterns of GFP expression for all three WwTWs effluents reflected the known targets for steroidal oestrogens and for some other oestrogenic chemicals likely present in those effluents (i.e. nonylphenol or bisphenolic compounds). GFP induction was similarly responsive to vtg mRNA induction (a well-established biomarker for oestrogen exposure). We thus demonstrate the ERE-GFP transgenic zebrafish as an effective model for monitoring the oestrogenic potency and health effects for exposure to complex mixtures of chemicals contained within WwTW effluents.
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Affiliation(s)
- Ruth Cooper
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Arthur David
- School of Life Sciences, University of Sussex, Brighton BN1 9QJ, United Kingdom; Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, University of Rennes, F-35000 Rennes, France
| | - Tetsuhiro Kudoh
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom
| | - Charles R Tyler
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom.
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28
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Al Umairi AR, How ZT, Gamal El-Din M. Enhanced primary treatment during wet weather flow using ferrate as a coagulant, coagulant aid and disinfectant. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 290:112603. [PMID: 33895453 DOI: 10.1016/j.jenvman.2021.112603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 03/25/2021] [Accepted: 04/11/2021] [Indexed: 06/12/2023]
Abstract
This study evaluated the dual-function of ferrate as a coagulant and disinfectant for chemically-enhanced primary treatment during wet weather flow (WWF). For the first time, ferrate was thoroughly examined as a coagulant aid with aluminum sulfate (alum) to minimize the organic and inorganic contents along with microbial level during WWF. Ferrate as a coagulant was evaluated based on a two-level factorial design. At an optimized condition, a ferrate dose of 0.5 mg/L Fe with a cationic polymer (1.25 mg/L) removed 83% of turbidity, 87% of total suspended solids (TSS), 70% of chemical oxygen demand (COD), and 23% of ortho-phosphate (OP). Linear models were developed and used to adequately predict the removals. Ferrate as a coagulant aid added with alum showed better removal of TSS while no improvement was observed in the removals of turbidity and COD. The disinfection capacity of ferrate was evaluated at different dosing points when it was used as a coagulant, coagulant aid and as post dosed as a disinfectant. In particular, ferrate dose of 8 mg/L Fe removed only 2 logs of E. coli when it was used as a coagulant compared to more than 3-log removal of E. coli when ferrate was used as a coagulant aid and as a disinfectant. At optimal ferrate dose of 10 mg/L Fe as a coagulant aid with 6 mg/L Al achieved the target levels of turbidity (<8 NTU), TSS (<25 mg/L), and ferrate-induced iron particles (<0.6 mg/L) along with 5-log removal of E. coli within 31 min. This study suggested that using ferrate as a coagulant aid/disinfectant might be considered an effective approach for treating the wastewater during WWF.
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Affiliation(s)
- Abdul Rahim Al Umairi
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada; University of Technology and Applied Sciences, Higher College of Technology, PO Box 74, Al-Khuwair, Postal Code 133, Sultanate of Oman
| | - Zuo Tong How
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada.
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29
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Smalling KL, Devereux OH, Gordon SE, Phillips PJ, Blazer VS, Hladik ML, Kolpin DW, Meyer MT, Sperry AJ, Wagner T. Environmental and anthropogenic drivers of contaminants in agricultural watersheds with implications for land management. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 774:145687. [PMID: 33609846 DOI: 10.1016/j.scitotenv.2021.145687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
If not managed properly, modern agricultural practices can alter surface and groundwater quality and drinking water resources resulting in potential negative effects on aquatic and terrestrial ecosystems. Exposure to agriculturally derived contaminant mixtures has the potential to alter habitat quality and negatively affect fish and other aquatic organisms. Implementation of conservation practices focused on improving water quality continues to increase particularly in agricultural landscapes throughout the United States. The goal of this study was to determine the consequences of land management actions on the primary drivers of contaminant mixtures in five agricultural watersheds in the Chesapeake Bay, the largest watershed of the Atlantic Seaboard in North America where fish health issues have been documented for two decades. Surface water was collected and analyzed for 301 organic contaminants to determine the benefits of implemented best management practices (BMPs) designed to reduce nutrients and sediment to streams in also reducing contaminants in surface waters. Of the contaminants measured, herbicides (atrazine, metolachlor), phytoestrogens (formononetin, genistein, equol), cholesterol and total estrogenicity (indicator of estrogenic response) were detected frequently enough to statistically compare to seasonal flow effects, landscape variables and BMP intensity. Contaminant concentrations were often positively correlated with seasonal stream flow, although the magnitude of this effect varied by contaminant across seasons and sites. Land-use and other less utilized landscape variables including biosolids, manure and pesticide application and percent phytoestrogen producing crops were inversely related with site-average contaminant concentrations. Increased BMP intensity was negatively related to contaminant concentrations indicating potential co-benefits of BMPs for contaminant reduction in the studied watersheds. The information gained from this study will help prioritize ecologically relevant contaminant mixtures for monitoring and contributes to understanding the benefits of BMPs on improving surface water quality to better manage living resources in agricultural landscapes inside and outside the Chesapeake Bay watershed.
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Affiliation(s)
- Kelly L Smalling
- U.S. Geological Survey New Jersey Water Science Center, Lawrenceville, NJ 08648, USA.
| | | | - Stephanie E Gordon
- U.S. Geological Survey Leetown Science Center, National Fish Health Research Laboratory, Kearneysville, WV 25430, USA.
| | - Patrick J Phillips
- U.S. Geological Survey New York Water Science Center, Troy, NY 12180, USA.
| | - Vicki S Blazer
- U.S. Geological Survey Leetown Science Center, National Fish Health Research Laboratory, Kearneysville, WV 25430, USA
| | - Michelle L Hladik
- U.S. Geological Survey California Water Science Center Sacramento, CA 95819, USA.
| | - Dana W Kolpin
- U.S. Geological Survey Central Midwest Water Science Center Iowa City, IA 52240, USA.
| | - Michael T Meyer
- U.S. Geological Survey Kansas Water Science Center, Lawrence, KS 66046, USA.
| | - Adam J Sperry
- U.S. Geological Survey Leetown Science Center, National Fish Health Research Laboratory, Kearneysville, WV 25430, USA
| | - Tyler Wagner
- U.S. Geological Survey, Pennsylvania Cooperative Fish and Wildlife Research Unit, Pennsylvania State University, 402 Forest Resources Building, University Park, PA 16802, USA.
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30
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Alameddine M, How ZT, Gamal El-Din M. Advancing the treatment of primary influent and effluent wastewater during wet weather flow by single versus powdered activated carbon-catalyzed ozonation for the removal of trace organic compounds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 770:144679. [PMID: 33517010 DOI: 10.1016/j.scitotenv.2020.144679] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 12/01/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
For the first time, single and PAC-catalyzed ozonation were explored for the wastewater treatment during wet weather flow in a prompt and efficient process. The effect of varying the ozone (O3) specific dose on the removal of micropollutants (MPs) was first investigated with a mixture of pharmaceuticals, herbicides and perfluorinated compounds in clean water. Most MPs showed higher affinity towards catalytic ozonation. Carbamazepine and Atrazine were found to be good surrogates for fast and slow reacting compounds, respectively. Applying single or PAC-catalyzed ozonation for 1 min only after coagulation was more efficient than applying them simultaneously. PAC-catalyzed ozonation was more efficient for the removal of organics and O3-resistant MPs. Both single and PAC-catalyzed ozonation achieved 4 log removal of E. coli, reduced the acute and genetic toxicity, and estrogenic activity of the wastewater. A detailed cost analysis revealed that applying single ozonation after coagulation costs between 0.06 and 0.32 $/m3 while applying PAC-catalyzed ozonation costs between 0.32 and 0.63 $/m3 for a flow rate between 100 and 600 MLD. Through a comprehensive performance assessment, PAC-catalyzed ozonation was deemed superior with one drawback related to the disposal of PAC.
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Affiliation(s)
- Mirna Alameddine
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Zuo Tong How
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada.
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31
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Petrie B. A review of combined sewer overflows as a source of wastewater-derived emerging contaminants in the environment and their management. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:10.1007/s11356-021-14103-1. [PMID: 33914245 PMCID: PMC8241663 DOI: 10.1007/s11356-021-14103-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
Emerging contaminants such as pharmaceuticals, illicit drugs and personal care products can be released to the environment in untreated wastewater/stormwater mixtures following storm events. The frequency and intensity of combined sewer overflows (CSOs) has increased in some areas due to increasing urbanisation and climate change. Therefore, this review provides an up-to-date overview on CSOs as an environmental source of emerging contaminants. Other than compounds with high removal, those chiral species subject to enantioselective changes (i.e. degradation or inversion) during wastewater treatment can be effective markers of CSO discharge in the environment. A proposed framework for the selection of emerging contaminants as markers of CSOs is outlined. Studies have demonstrated that CSOs can be the main source of emerging contaminants with high removal efficiency during wastewater treatment (e.g. > 90%). However, the impact of CSOs on the environment is location specific and requires decision-making on their appropriate management at catchment level. This process would be aided by further studies on CSOs which incorporate the monitoring of emerging contaminants and their effects in the environment with those more routinely monitored pollutants (e.g. pathogens and priority substances). Mitigation and treatment strategies for emerging contaminants in CSOs are also discussed.
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Affiliation(s)
- Bruce Petrie
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, AB10 7GJ, UK.
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Ekhlas D, Kurisu F, Kasuga I, Cernava T, Berg G, Liu M, Furumai H. Identification of new eligible indicator organisms for combined sewer overflow via 16S rRNA gene amplicon sequencing in Kanda River, Tokyo. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 284:112059. [PMID: 33556826 DOI: 10.1016/j.jenvman.2021.112059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 01/22/2021] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
Fecal indicator bacteria (FIB) are commonly used to evaluate the pollution impact of combined sewer overflows (CSOs) in urban rivers. Although water quality assessment with FIB has a long tradition, recent studies demonstrated that FIB have a low correlation with pathogens and therefore are not accurate enough for the assessment of potential human hazards in water. Consequently, new eligible and more specific indicators have to be identified, which was done in this study via sequencing of genetic markers from total community DNA. To identify potential microbiome-based indicators, microbial communities in samples from an urban river in Tokyo under different climatic conditions (dry and rainy) were compared with the influent and effluent of three domestic wastewater treatment plants (WWTPs) by analyzing 16 S rRNA gene amplicon libraries. In the first part of this study, physicochemical parameters and FIB quantification with selective culture techniques facilitated the identification of samples contaminated with CSO, sewage, or both. This allowed the grouping of samples into CSO-contaminated and non-contaminated samples, an essential step prior to the microbiome comparison between samples. Increased turbidity, ammonia concentrations, and E. coli [up to (9.37 ± 0.95) × 102 CFU/mL after 11.5 mm of rainfall] were observed in CSO-contaminated river samples. Comparison of dry weather (including WWTP samples) and rainy weather samples showed a reduction in microbial diversity in CSO-contaminated samples. Furthermore, the results of this study suggest Bacteroides spp. as a novel indicator of sewage pollution in surface waters.
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Affiliation(s)
- Daniel Ekhlas
- Institute of Environmental Biotechnology, Graz University of Technology, Graz, 8010, Austria; Department of Urban Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Futoshi Kurisu
- Research Center for Water Environment Technology, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan.
| | - Ikuro Kasuga
- Department of Urban Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Tomislav Cernava
- Institute of Environmental Biotechnology, Graz University of Technology, Graz, 8010, Austria
| | - Gabriele Berg
- Institute of Environmental Biotechnology, Graz University of Technology, Graz, 8010, Austria
| | - Miaomiao Liu
- Research Center for Water Environment Technology, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Hiroaki Furumai
- Research Center for Water Environment Technology, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
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González Peña OI, López Zavala MÁ, Cabral Ruelas H. Pharmaceuticals Market, Consumption Trends and Disease Incidence Are Not Driving the Pharmaceutical Research on Water and Wastewater. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:2532. [PMID: 33806343 PMCID: PMC7967517 DOI: 10.3390/ijerph18052532] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 02/19/2021] [Accepted: 02/19/2021] [Indexed: 12/26/2022]
Abstract
Pharmaceuticals enhance our quality of life; consequently, their consumption is growing as a result of the need to treat ageing-related and chronic diseases and changes in the clinical practice. The market revenues also show an historic growth worldwide motivated by the increase on the drug demand. However, this positivism on the market is fogged because the discharge of pharmaceuticals and their metabolites into the environment, including water, also increases due to their inappropriate management, treatment and disposal; now, worldwide, this fact is recognized as an environmental concern and human health risk. Intriguingly, researchers have studied the most effective methods for pharmaceutical removal in wastewater; however, the types of pharmaceuticals investigated in most of these studies do not reflect the most produced and consumed pharmaceuticals on the market. Hence, an attempt was done to analyze the pharmaceutical market, drugs consumption trends and the pharmaceutical research interests worldwide. Notwithstanding, the intensive research work done in different pharmaceutical research fronts such as disposal and fate, environmental impacts and concerns, human health risks, removal, degradation and development of treatment technologies, found that such research is not totally aligned with the market trends and consumption patterns. There are other drivers and interests that promote the pharmaceutical research. Thus, this review is an important contribution to those that are interested not only on the pharmaceutical market and drugs consumption, but also on the links, the drivers and interests that motivate and determine the research work on certain groups of pharmaceuticals on water and wastewater.
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Affiliation(s)
- Omar Israel González Peña
- Tecnologico de Monterrey, School of Engineering and Science, Av. Eugenio Garza Sada Sur No. 2501, Col. Tecnológico, Monterrey 64849, Mexico;
| | - Miguel Ángel López Zavala
- Tecnologico de Monterrey, School of Engineering and Science, Av. Eugenio Garza Sada Sur No. 2501, Col. Tecnológico, Monterrey 64849, Mexico;
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Duan S, Iwanowicz LR, Noguera-Oviedo K, Kaushal SS, Rosenfeldt EJ, Aga DS, Murthy S. Evidence that watershed nutrient management practices effectively reduce estrogens in environmental waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143904. [PMID: 33321363 DOI: 10.1016/j.scitotenv.2020.143904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 05/22/2023]
Abstract
We evaluate the impacts of different nutrient management strategies on the potential for co-managing estrogens and nutrients in environmental waters of the Potomac watershed of the Chesapeake Bay. These potential co-management approaches represent agricultural and urban runoff, wastewater treatment plant effluent, and combined sewer overflow replacements. Twelve estrogenic compounds and their metabolites were analysed by gas chromatography-mass spectrometry. Estrogenic activity (E2Eq) was measured by in vitro bioassay. We detected estrone E1 (0.05-6.97 ng L-1) and estriol E3 (below detection-8.13 ng L-1) and one conjugated estrogen (estrone-3-sulfate E1-3S; below detection-8.13 ng L-1). E1 was widely distributed and positively correlated with E2Eq, water temperature, and dissolved organic carbon (DOC). Among nonpoint sources, E2Eq, and concentrations of E1, soluble reactive phosphorus (SRP) and total dissolved nitrogen (TDN) decreased by 51-61%, 77-82%, 62-64%, 4-16% in restored urban and agricultural streams with best management practices (BMPs) relative to unrestored streams without BMPs. In a wastewater treatment plant (Blue Plains WWTP), >94% of E1, E1-3S, E3, E2Eq and TDN were removed while SRP increased by 305% during nitrification/denitrification as a part of advanced wastewater treatment. Consequently, E1 and TDN concentrations in WWTP effluents were comparable or even lower than those observed in the receiving stream or river waters, and the effects of wastewater discharges on downstream E1 and TDN concentrations were minor. Highest E2Eq value and concentrations of E1, E3, and TDN were detected in combined sewer overflow (CSO). This study suggests that WWTP upgrades with biological nutrient removal, CSO management, and certain agricultural and urban BMPs for nutrient controls have the potential to remove estrogens from point and nonpoint sources along with other contaminants in streams and rivers.
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Affiliation(s)
- Shuiwang Duan
- Department of Geology & Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742, USA.
| | - Luke R Iwanowicz
- US Geological Survey, Leetown Science Center, National Fish Health Research Laboratory, Kearneysville, WV, USA
| | - Katia Noguera-Oviedo
- Chemistry Department, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Sujay S Kaushal
- Department of Geology & Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20742, USA
| | | | - Diana S Aga
- Chemistry Department, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Sudhir Murthy
- District of Columbia Water and Sewer Authority, Washington, DC, USA
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Harraka GT, Magnuson JT, Du B, Wong CS, Maruya K, Schlenk D. Evaluating the estrogenicity of an effluent-dominated river in California, USA: Comparisons of in vitro and in vivo bioassays. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143965. [PMID: 33321365 DOI: 10.1016/j.scitotenv.2020.143965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/13/2020] [Accepted: 11/14/2020] [Indexed: 06/12/2023]
Abstract
Estrogenically active compounds (EACs) in surface waters can disrupt the endocrine system of biota, raising concern for aquatic species. Concentrations of EACs are generally higher in effluent-dominated aquatic systems, such as California's Santa Ana River (SAR). Addressing estrogenicity of effluent-dominated waters is increasingly important due to both increasing urbanization and climate change. To this end, water samples were collected from multiple sites downstream of wastewater treatment plants (WWTPs) and intermittent points along the SAR during 2018-2019 and cell-based bioassays were used to determine estrogen receptor activity. During baseflow conditions, the highest estradiol equivalencies (EEQs) from all SAR water between summer (August and September) and fall (November) sampling events in 2018 were from Yorba Linda (EEQ = 1.36 ± 0.38 ng/L) and Prado (1.14 ± 0.13 ng/L), respectively. Water extracts in January 2019 following a major rainfall generally had higher EEQs with the highest EEQ of 10.0 ± 0.69 ng/L observed at Yorba Linda. During low flow conditions in November 2018, male Japanese medaka (Oryzias latipes) fish were exposed to SAR water to compare to cell bioassay responses and targeted analytical chemistry for 5 steroidal estrogens. Chemical-based EEQ correlations with in vitro EEQs were statistically significant. However, vitellogenin (vtg) mRNA expression in the livers of medaka exposed to SAR water was not significantly different compared to controls. These results indicate that seasonal variation and surface water runoff events influence estrogenic activity in the SAR and may induce estrogenic effects to native fish populations in wastewater-dominated streams in general.
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Affiliation(s)
- Gary T Harraka
- Department of Environmental Sciences, University of California Riverside, Riverside, CA, USA
| | - Jason T Magnuson
- Department of Environmental Sciences, University of California Riverside, Riverside, CA, USA.
| | - Bowen Du
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA, USA
| | - Charles S Wong
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA, USA
| | - Keith Maruya
- Southern California Coastal Water Research Project Authority, Costa Mesa, CA, USA
| | - Daniel Schlenk
- Department of Environmental Sciences, University of California Riverside, Riverside, CA, USA; Institute of Environmental Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
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Maurer L, Villette C, Reiminger N, Jurado X, Laurent J, Nuel M, Mosé R, Wanko A, Heintz D. Distribution and degradation trend of micropollutants in a surface flow treatment wetland revealed by 3D numerical modelling combined with LC-MS/MS. WATER RESEARCH 2021; 190:116672. [PMID: 33285453 DOI: 10.1016/j.watres.2020.116672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
Conventional wastewater treatment plants are not designed to treat micropollutants; thus, for 20 years, several complementary treatment systems, such as surface flow wetlands have been used to address this issue. Previous studies demonstrate that higher residence time and low global velocities promote nutrient removal rates or micropollutant photodegradation. Nevertheless, these studies were restricted to the system limits (inlet/outlet). Therefore, detailed knowledge of water flow is crucial for identifying areas that promote degradation and optimise surface flow wetlands. The present study combines 3D water flow numerical modelling and liquid chromatography coupled with high-resolution mass spectrometry (LC-HRMS/MS). Using this numerical model, validated by tracer experimental data, several velocity areas were distinguished in the wetland. Four areas were selected to investigate the waterflow influence and led to the following results: on the one hand, the number and concentration of micropollutants are independent of the waterflow, which could be due to several assumptions, such as the chronic exposure associated with a low Reynolds number; on the other hand, the potential degradation products (metabolites) were also assessed in the sludge to investigate the micropollutant biodegradation processes occurring in the wetland; micropollutant metabolites or degradation products were detected in higher proportions (both number and concentration) in lower flow rate areas. The relation to higher levels of plant and microorganism metabolites suggests higher biological activity that promotes degradation.
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Affiliation(s)
- Loïc Maurer
- Plant Imaging and Mass Spectrometry (PIMS), Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du Général Zimmer, 67084 Strasbourg, France; Department of mechanics - Engineering science, Computer Science and Imaging Laboratory (ICube, UMR 7357), ENGEES/CNRS/INSA/University of Strasbourg, 2 rue Boussingault, 67000 Strasbourg, France
| | - Claire Villette
- Plant Imaging and Mass Spectrometry (PIMS), Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du Général Zimmer, 67084 Strasbourg, France
| | - Nicolas Reiminger
- Department of mechanics - Engineering science, Computer Science and Imaging Laboratory (ICube, UMR 7357), ENGEES/CNRS/INSA/University of Strasbourg, 2 rue Boussingault, 67000 Strasbourg, France; AIR&D, 67000, Strasbourg, France
| | - Xavier Jurado
- Department of mechanics - Engineering science, Computer Science and Imaging Laboratory (ICube, UMR 7357), ENGEES/CNRS/INSA/University of Strasbourg, 2 rue Boussingault, 67000 Strasbourg, France; AIR&D, 67000, Strasbourg, France
| | - Julien Laurent
- Department of mechanics - Engineering science, Computer Science and Imaging Laboratory (ICube, UMR 7357), ENGEES/CNRS/INSA/University of Strasbourg, 2 rue Boussingault, 67000 Strasbourg, France
| | - Maximilien Nuel
- Department of mechanics - Engineering science, Computer Science and Imaging Laboratory (ICube, UMR 7357), ENGEES/CNRS/INSA/University of Strasbourg, 2 rue Boussingault, 67000 Strasbourg, France
| | - Robert Mosé
- Department of mechanics - Engineering science, Computer Science and Imaging Laboratory (ICube, UMR 7357), ENGEES/CNRS/INSA/University of Strasbourg, 2 rue Boussingault, 67000 Strasbourg, France
| | - Adrien Wanko
- Department of mechanics - Engineering science, Computer Science and Imaging Laboratory (ICube, UMR 7357), ENGEES/CNRS/INSA/University of Strasbourg, 2 rue Boussingault, 67000 Strasbourg, France
| | - Dimitri Heintz
- Plant Imaging and Mass Spectrometry (PIMS), Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du Général Zimmer, 67084 Strasbourg, France.
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Poopipattana C, Suzuki M, Furumai H. Impact of long-duration CSO events under different tidal change conditions on distribution of microbial indicators and PPCPs in Sumida river estuary of Tokyo Bay, Japan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:7212-7225. [PMID: 33029770 DOI: 10.1007/s11356-020-11046-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 09/28/2020] [Indexed: 06/11/2023]
Abstract
The Sumida river estuary of Tokyo bay is often affected by fecal contamination from combined sewer overflows (CSOs). This study monitored the surface water quality from the upstream of the Sumida river to the estuary in October 2017, June 2018, and July 2018 after three long-duration rainfall events. Several types of sewage markers, including fecal bacteria and two types of bacteriophages as microbial markers, and five pharmaceuticals and personal care products (PPCPs) as chemical markers were used to evaluate fecal contamination. CSO discharge was estimated separately from pumping stations and overflow chambers. The dominant contribution from overflow chambers was estimated to be as high as 86 - 91% of total discharge volume indicating their significance in controlling CSO pollution. High concentrations of sewage marker were observed in a wide area due to CSO discharge of more than 30 h in all 3 events. Escherichia coli was found to be as high as 4.00 - 4.57 log10 (CFU/100 mL). Meanwhile, caffeine showed the highest concentration of 2105 ng/L among PPCPs. It was found to be a useful indicator of recent contamination that captured a unique spatial distribution tendency. On the other hand, crotamiton, a conservative PPCP, was found to be highly diluted and might not be appropriate for tracking pollutants under heavy rainfall events. The effect of CSO discharge pattern and tidal change on the distribution of sewage markers, including dispersion degree and pollutants travel time, was described. CSO pollutants were found to accumulate in the river mouth areas during high tide before being discharged into the estuary.
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Affiliation(s)
- Chomphunut Poopipattana
- Department of Urban Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan.
| | - Motoaki Suzuki
- Department of Urban Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Hiroaki Furumai
- Research Center for Water Environment Technology, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
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Ghirardini A, Zoboli O, Zessner M, Verlicchi P. Most relevant sources and emission pathways of pollution for selected pharmaceuticals in a catchment area based on substance flow analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 751:142328. [PMID: 33182006 DOI: 10.1016/j.scitotenv.2020.142328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 06/11/2023]
Abstract
The release of micropollutants in surface water depends on different sources and on different pathways. Through substance flow analysis, this study estimates the annual load of two pharmaceuticals (carbamazepine and sulfamethoxazole) in a catchment area, due to different emission pathways: wastewater treatment plant effluent, combined sewer overflows, and runoff from sludge and manure amended soil. It emerged that wastewater treatment plant effluent is the main emission pathway for carbamazepine (98.5% referring to the total released annual load) and land runoff (98%) for sulfamethoxazole. The study also investigates the parameters (including manure disposed on the land, removal efficiency and combined sewer overflow flowrate) which mostly influence the results, and those which are affected by higher uncertainty. The most uncertain parameters are those determining the fate of pharmaceuticals once in soil and surface water. The study concludes with a comparison between the predicted concentrations in different points of the receiving water body of the two key compounds, modeled with substance flow analysis, and those directly measured in a dedicated sampling campaign. The main discrepancies were found for sulfamethoxazole. Future research focusing on monitoring campaigns under different weather conditions and in different environmental compartments (soil and water) will certainly provide new insights in this kind of study.
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Affiliation(s)
- Andrea Ghirardini
- Department of Engineering, University of Ferrara, Via Saragat 1, I-44122 Ferrara, Italy.
| | - Ottavia Zoboli
- Institute for Water Quality and Resource Management, TU Wien, Karlsplatz 13/226, 1040 Vienna, Austria.
| | - Matthias Zessner
- Institute for Water Quality and Resource Management, TU Wien, Karlsplatz 13/226, 1040 Vienna, Austria.
| | - Paola Verlicchi
- Department of Engineering, University of Ferrara, Via Saragat 1, I-44122 Ferrara, Italy.
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Müller ME, Zwiener C, Escher BI. Storm Event-Driven Occurrence and Transport of Dissolved and Sorbed Organic Micropollutants and Associated Effects in the Ammer River, Southwestern Germany. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:88-99. [PMID: 33079390 DOI: 10.1002/etc.4910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/11/2020] [Accepted: 10/16/2020] [Indexed: 06/11/2023]
Abstract
Storm events lead to agricultural and urban runoff, to mobilization of contaminated particulate matter, and to input from combined sewer overflows into rivers. We conducted time-resolved sampling during a storm event at the Ammer River, southwest Germany, which is representative of small river systems in densely populated areas with a temperate climate. Suspended particulate matter (SPM) and water from 2 sampling sites were separately analyzed by a multi-analyte liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for 97 environmentally relevant organic micropollutants and with 2 in vitro bioassays. Oxidative stress response (AREc32) may become activated by various stressors covering a broad range of physicochemical properties and induction of aryl hydrocarbon receptor-chemical-activated luciferase gene expression (AhR-CALUX) by hydrophobic compounds such as dioxins and dioxin-like molecules. Compound numbers, concentrations, their mass fluxes, and associated effect fluxes increased substantially during the storm event. Micropollutants detected in water and on SPM pointed toward inputs from combined sewer overflow (e.g., caffeine, paracetamol), urban runoff (e.g., mecoprop, terbutryn), and agricultural areas (e.g., azoxystrobin, bentazone). Particle-facilitated transport of triphenylphosphate and tris(1-chloro-2-propyl) phosphate accounted for up to 34 and 33% of the total mass flux even though SPM concentrations were <1 g L-1 . Effect fluxes attributed to SPM were similar or higher than in the water phase. The important role of SPM-bound transport emphasizes the need to consider not only concentrations but also mass and effect fluxes for surface water quality assessment and wastewater/stormwater treatment options. Environ Toxicol Chem 2021;40:88-99. © 2020 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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Affiliation(s)
- Maximilian E Müller
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Christian Zwiener
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
| | - Beate I Escher
- Center for Applied Geoscience, Eberhard Karls University of Tübingen, Tübingen, Germany
- Department of Cell Toxicology, UFZ-Helmholtz Centre for Environmental Research, Leipzig, Germany
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Elizabeth Alter S, Tariq L, Creed JK, Megafu E. Evolutionary responses of marine organisms to urbanized seascapes. Evol Appl 2021; 14:210-232. [PMID: 33519966 PMCID: PMC7819572 DOI: 10.1111/eva.13048] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 12/19/2022] Open
Abstract
Many of the world's major cities are located in coastal zones, resulting in urban and industrial impacts on adjacent marine ecosystems. These pressures, which include pollutants, sewage, runoff and debris, temperature increases, hardened shorelines/structures, and light and acoustic pollution, have resulted in new evolutionary landscapes for coastal marine organisms. Marine environmental changes influenced by urbanization may create new selective regimes or may influence neutral evolution via impacts on gene flow or partitioning of genetic diversity across seascapes. While some urban selective pressures, such as hardened surfaces, are similar to those experienced by terrestrial species, others, such as oxidative stress, are specific to aquatic environments. Moreover, spatial and temporal scales of evolutionary responses may differ in the ocean due to the spatial extent of selective pressures and greater capacity for dispersal/gene flow. Here, we present a conceptual framework and synthesis of current research on evolutionary responses of marine organisms to urban pressures. We review urban impacts on genetic diversity and gene flow and examine evidence that marine species are adapting, or are predicted to adapt, to urbanization over rapid evolutionary time frames. Our findings indicate that in the majority of studies, urban stressors are correlated with reduced genetic diversity. Genetic structure is often increased in urbanized settings, but artificial structures can also act as stepping stones for some hard-surface specialists, promoting range expansion. Most evidence for rapid adaptation to urban stressors comes from studies of heritable tolerance to pollutants in a relatively small number of species; however, the majority of marine ecotoxicology studies do not test directly for heritability. Finally, we highlight current gaps in our understanding of evolutionary processes in marine urban environments and present a framework for future research to address these gaps.
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Affiliation(s)
- S. Elizabeth Alter
- Department of Biology & ChemistryCalifornia State University, Monterey BayChapman Academic Science CenterSeasideCAUSA
- Department of BiologyYork CollegeCity University of New YorkJamaicaNYUSA
- Department of IchthyologyAmerican Museum of Natural HistoryNew YorkNYUSA
| | - Laraib Tariq
- Department of BiologyYork CollegeCity University of New YorkJamaicaNYUSA
| | - James Keanu Creed
- Department of BiologyYork CollegeCity University of New YorkJamaicaNYUSA
- Department of IchthyologyAmerican Museum of Natural HistoryNew YorkNYUSA
| | - Emmanuel Megafu
- Department of BiologyYork CollegeCity University of New YorkJamaicaNYUSA
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Maurer L, Villette C, Zumsteg J, Wanko A, Heintz D. Large scale micropollutants and lipids screening in the sludge layers and the ecosystem of a vertical flow constructed wetland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 746:141196. [PMID: 32771759 DOI: 10.1016/j.scitotenv.2020.141196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 06/17/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Wastewater is one of the major sources of micropollutant release into the environment. In order to reduce the impact of wastewater, wastewater treatment plants (WWTP) have been set up, in the instance of vertical flow constructed wetlands (VFCWs). Besides, micropollutants could represent a vast diversity of compounds and compound's choice could bias studies focused on their fate. To overcome this bias, non-targeted screening approaches can be performed. Therefore, the diffusion of micropollutants from raw wastewater in the VFCW compartments (wastewater, plants and sludge) as well as their fate have been investigated using this non-target approach with liquid chromatography (LC) coupled to high resolution mass spectrometry (HRMS) and gas chromatography (GC) coupled to mass spectrometry. To help the operators in their sludge management, this study will be focused on the following question: Is there a specific distribution of micropollutants according to sludge layers? To eliminate the background contamination found both inside the CW and in the surrounding environment, a control coring was performed in bank. A specific distribution could be observed in the top (191 compounds) and bottom layers (38 compounds). However, a distribution over the whole depth for xenobiotics was observed. Micropollutants classes and the main microbial productivity were preferably found in the top layer. The micropollutants fate could however not be restricted to the sludge compartment. Therefore, the specific micropollutants distribution was analyzed in the outputs of the system in their interactions with wastewater (effluent, sludge, and reed rhizomes) to understand their fate. In our study, the results highlighted a consistent part of compounds found in at least two or three of these compartments, with a similar trend in each compartment. These results underline the interactions between the compartments and the global issues of micropollutants distribution as well as its wide spreading in the whole CW ecosystem.
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Affiliation(s)
- Loïc Maurer
- Plant Imaging and Mass Spectrometry (PIMS), Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du Général Zimmer, 67084 Strasbourg, France; Département mécanique, ICube Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie, UNISTRA/CNRS/ENGEES/INSA, 2 rue Boussingault, 67000 Strasbourg, France
| | - Claire Villette
- Plant Imaging and Mass Spectrometry (PIMS), Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du Général Zimmer, 67084 Strasbourg, France; Département mécanique, ICube Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie, UNISTRA/CNRS/ENGEES/INSA, 2 rue Boussingault, 67000 Strasbourg, France
| | - Julie Zumsteg
- Plant Imaging and Mass Spectrometry (PIMS), Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du Général Zimmer, 67084 Strasbourg, France
| | - Adrien Wanko
- Département mécanique, ICube Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie, UNISTRA/CNRS/ENGEES/INSA, 2 rue Boussingault, 67000 Strasbourg, France
| | - Dimitri Heintz
- Plant Imaging and Mass Spectrometry (PIMS), Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du Général Zimmer, 67084 Strasbourg, France.
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Yi M, Sheng Q, Sui Q, Lu H. β-blockers in the environment: Distribution, transformation, and ecotoxicity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115269. [PMID: 32836046 DOI: 10.1016/j.envpol.2020.115269] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/30/2020] [Accepted: 07/17/2020] [Indexed: 06/11/2023]
Abstract
β-blockers are a class of medications widely used to treat cardiovascular disorders, including abnormal heart rhythms, high blood pressure, and angina pectoris. The prevalence of β-blockers has generated a widespread concern on their potential chronic toxicity on aquatic organisms, highlighting the necessity of comprehensive studies on their environmental distribution, fate, and toxicity. This review summarizes the up-to-date knowledge on the source, global distribution, analytical methods, transformation, and toxicity of β-blockers. Twelve β-blockers have been detected in various environmental matrices, displaying significant temporal and spatial variations. β-blockers can be reduced by 0-99% at wastewater treatment plants, where secondary processes contribute to the majority of removal. Advanced oxidation processes, e.g., photocatalysis and combined UV/persulfate can transform β-blockers more rapidly and completely than conventional wastewater treatment processes, but the transformation products could be more toxic than the parent compounds. Propranolol, especially its (S)-enantiomer, exhibits the highest toxicity among all β-blockers. Future research towards improved detection methods, more efficient and cost-effective removal techniques, and more accurate toxicity assessment is needed to prioritize β-blockers for environmental monitoring and control worldwide.
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Affiliation(s)
- Ming Yi
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Qi Sheng
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Qian Sui
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, China
| | - Huijie Lu
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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The Role of Sewer Network Structure on the Occurrence and Magnitude of Combined Sewer Overflows (CSOs). WATER 2020. [DOI: 10.3390/w12102675] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Combined sewer overflows (CSOs) prevent surges in sewer networks by releasing untreated wastewater into nearby water bodies during intense storm events. CSOs can have acute and detrimental impacts on the environment and thus need to be managed. Although several gray, green and hybrid CSO mitigation measures have been studied, the influence of network structure on CSO occurrence is not yet systematically evaluated. This study focuses on evaluating how the variation of urban drainage network structure affects the frequency and magnitude of CSO events. As a study case, a sewer subnetwork in Dresden, Germany, where 11 CSOs are present, was selected. Scenarios corresponding to the structures with the lowest and with the highest number of possible connected pipes, are developed and evaluated using long-term hydrodynamic simulation. Results indicate that more meshed structures are associated to a decrease on the occurrence and magnitude of CSO. Event frequency reductions vary between 0% and 68%, while reduction of annual mean volumes and annual mean loads ranged between 0% and 87% and 0% and 92%. These rates were mainly related to the additional sewer storage capacity provided in the more meshed scenarios, following a sigmoidal behavior. However, increasing network connections causes investment costs, therefore optimization strategies for selecting intervention areas are needed. Furthermore, the present approach of reducing CSO frequency may provide a new gray solution that can be integrated in the development of hybrid mitigation strategies for the CSO management.
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Mutzner L, Bohren C, Mangold S, Bloem S, Ort C. Spatial Differences among Micropollutants in Sewer Overflows: A Multisite Analysis Using Passive Samplers. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:6584-6593. [PMID: 32223223 DOI: 10.1021/acs.est.9b05148] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Untreated sewer overflows can contaminate receiving waters with micropollutants. Although concentrations of discharged micropollutants can be ecotoxicologically relevant, only limited data is available to assess occurrence and spatial differences among sewer overflow catchments. Therefore, we present an innovative type of data obtained with passive samplers at 20 combined sewer overflow sites (2-7 events per site; 95 events in total). The data sheds light on concentration ranges for 13 representative polar organic micropollutants and shows that micropollutants in both municipal wastewater and stormwater can be relevant sources of contaminants. We identify indicator micropollutants for further studies: benzotriazole (80% interquantile of time-weighted average concentration: 250-4800 ng/L), carbamazepine (33-910 ng/L), diclofenac (78-1000 ng/L), carbendazim (21-900 ng/L), diazinon (2.1-53 ng/L), diuron (22-1100 ng/L), mecoprop (98-5300 ng/L), metolachlor (6-230 ng/L), and terbutryn (29-810 ng/L). These concentration estimates are assumed to be on the safe side for comparison with environmental quality standards (EQS). A majority of sewer overflow sites (13 of 20) show discharge concentrations above acute EQS for at least one micropollutant and thus would have to rely on dilution by receiving waters to not exceed any EQS. The intersite variability among sewer overflows exceed the within-site variability. Hence, future monitoring studies should cover more sewer overflow sites. No correlation could be found with event durations, specific storage volume or land use data, thus showing the complexity of micropollutant occurrence and indicating that other factors led to the observed high spatial variability. In conclusion, our results clearly show the potential relevance of micropollutants in sewer overflows and the need to assess site-specific measures.
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Affiliation(s)
- Lena Mutzner
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
- Institute of Civil, Environmental and Geomatic Engineering, ETH Zürich, 8093 Zurich, Switzerland
| | - Christoph Bohren
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
- Institute of Civil, Environmental and Geomatic Engineering, ETH Zürich, 8093 Zurich, Switzerland
| | - Simon Mangold
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Simon Bloem
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
| | - Christoph Ort
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland
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Kozak S, Petterson S, McAlister T, Jennison I, Bagraith S, Roiko A. Utility of QMRA to compare health risks associated with alternative urban sewer overflow management strategies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 262:110309. [PMID: 32250792 DOI: 10.1016/j.jenvman.2020.110309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 01/10/2020] [Accepted: 02/18/2020] [Indexed: 06/11/2023]
Abstract
Wet weather sewer overflows pose potential short-term public health risks. With increasing populations, aging infrastructure and climate change, utilities are challenged with managing sewerage infrastructure to provide optimum outcomes. This study compared how modelled public health risk profiles could change under alternative sewer overflow management strategies during 12 and 24-month rainfall-runoff events. Specifically, existing conditions were compared with both a 'business-as-usual' (BAU) sewer upgrade and a more holistic 'effects-based planning' (EBP) approach based on pumped wet weather sewage overflows directed to a local receiving waterway. Options were compared based on their efficacy to reduce manhole overflows, recreational waterway guideline exceedances and downstream recreational waterway health risks estimated through a screening-level Quantitative Microbial Risk Assessment (QMRA). Results indicated that the two management strategies would be equally effective in reducing the frequency, duration and volume of manhole sewer overflows, eliminating them in the 12-month scenarios and reducing them from >5000 m3 for the 24-month baseline scenario, to 23 and 35 m3 for BAU and EBP, respectively. Baseline, BAU and EBP scenarios produced similar hours of enterococci guideline exceedances, ranging from 1 to 4 h difference. The QMRA produced similar health risk profiles for downstream recreational waterway users for all design events, suggesting that sewer overflows are not the primary driver of public health risks during and immediately following high rainfall events. As such, QMRA provided evidence that an EBP strategy may be used to manage wet weather sewer overflows in lieu of an expensive BAU upgrade, without exacerbating the public health of downstream waterway users. Further investigation of the broader environmental health impacts of implementing this type of innovative approach is warranted. Nonetheless, this work highlights the value of integrating QMRA with other modelling approaches to guide and inform sewer overflow management.
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Affiliation(s)
- Sonya Kozak
- School of Medicine, Griffith University, Parklands Drive, Gold Coast, Australia; Cities Research Institute, Griffith University, Parklands Drive, Gold Coast, Australia.
| | - Susan Petterson
- School of Medicine, Griffith University, Parklands Drive, Gold Coast, Australia; Water & Health Pty Ltd, P.O. 648, Salamander Bay, 2317, Australia.
| | - Tony McAlister
- School of Medicine, Griffith University, Parklands Drive, Gold Coast, Australia; Water Technology, Level 3, 43 Peel Street, South Brisbane, QLD, Australia.
| | - Ian Jennison
- Queensland Urban Utilities, 2/15 Green Square Close, Brisbane, Australia.
| | - Sam Bagraith
- Queensland Urban Utilities, 2/15 Green Square Close, Brisbane, Australia.
| | - Anne Roiko
- School of Medicine, Griffith University, Parklands Drive, Gold Coast, Australia; Cities Research Institute, Griffith University, Parklands Drive, Gold Coast, Australia.
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Kibuye FA, Gall HE, Veith TL, Elkin KR, Elliott HA, Harper JP, Watson JE. Influence of hydrologic and anthropogenic drivers on emerging organic contaminants in drinking water sources in the Susquehanna River Basin. CHEMOSPHERE 2020; 245:125583. [PMID: 31869673 DOI: 10.1016/j.chemosphere.2019.125583] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 12/02/2019] [Accepted: 12/07/2019] [Indexed: 05/08/2023]
Abstract
Occurrence of emerging organic contaminants (EOCs) in surface water bodies can cause adverse effects on non-target organisms. When surface waters are used as drinking water sources, temporal variability in EOC concentrations can potentially impact drinking water quality and human health. To better understand spatiotemporal variability of EOCs in drinking water sources in Central Pennsylvania, EOCs were evaluated in six drinking water sources during a two-year study period (April 2016-June 2018) in the Susquehanna River Basin (SRB). The study was conducted in two phases: Phase I was a spatially distributed sampling approach within the SRB focusing on seven human pharmaceuticals and Phase II was a temporally intensive sampling regime at a single site focusing on a broader range of EOCs. Concentration-discharge relationships were utilized to classify EOC transport dynamics and understand the extent to which hydrologic and anthropogenic factors, such as surface runoff and wastewater effluent, may contribute to EOC occurrence. Overall, EOCs were present at higher concentrations in colder seasons than warmer seasons. Thiamethoxam, a neonicotinoid insecticide, and caffeine exhibited accretion dynamics during high-flow periods, suggesting higher transport during surface runoff events. Human pharmaceuticals known to persist in wastewater effluent were inversely correlated with discharge, indicating dilution characteristics consistent with diminished wastewater signals during high-flow periods. Acetaminophen exhibited near-chemostatic transport dynamics, indicating nonpoint source inputs during high-flow periods. Risk calculations revealed that although EOCs posed medium-to-high risk to aquatic organisms, human health risk through fish consumption was low.
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Affiliation(s)
- Faith A Kibuye
- The Pennsylvania State University, Department of Agricultural and Biological Engineering, University Park, PA, 16802, USA
| | - Heather E Gall
- The Pennsylvania State University, Department of Agricultural and Biological Engineering, University Park, PA, 16802, USA.
| | - Tamie L Veith
- USDA-ARS Pasture Systems and Watershed Management Research Unit, University Park, PA, 16802, USA
| | - Kyle R Elkin
- USDA-ARS Pasture Systems and Watershed Management Research Unit, University Park, PA, 16802, USA
| | - Herschel A Elliott
- The Pennsylvania State University, Department of Agricultural and Biological Engineering, University Park, PA, 16802, USA
| | - Jeremy P Harper
- The Pennsylvania State University, Energy and Environmental Sustainability Laboratories, University Park, PA, 16802, USA
| | - John E Watson
- The Pennsylvania State University, Department of Ecosystem Science and Management, University Park, PA, 16802, USA
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Wang H, Yang X, Chen Q, Su JQ, Mulla SI, Rashid A, Hu A, Yu CP. Response of prokaryotic communities to extreme precipitation events in an urban coastal lagoon: A case study of Yundang lagoon, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 706:135937. [PMID: 31841847 DOI: 10.1016/j.scitotenv.2019.135937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/25/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Increasing extreme precipitation events (EPEs) can induce biogeochemical disturbances in the coastal lagoon ecosystems. Very little is known about the response of prokaryotic communities to such influences, which are the key components mediating the biogeochemical cycling in lagoons. Here 16S rRNA gene amplicon sequencing and high-through quantitative PCR (HT-qPCR) were employed to investigate the distribution of prokaryotic communities and fecal indicator genes in the surface waters of Yundang lagoon, Xiamen, China during EPEs, respectively. Prokaryotic communities from rainwaters, influents (IFs) and effluents (EFs) from a nearby wastewater treatment plant were also characterised. The results indicated a significant variation in the composition of lagoon prokaryotic communities compared with rainwaters, IFs and EFs. Multivariate and phylogenetic signal analyses revealed that environmental filtering, mainly controlled by salinity, was the major ecological process responsible for the temporal succession of lagoon prokaryotic communities during EPEs. Moreover, the pollution indicator taxa (based on amplicon sequencing) and fecal indicator genes (based on HT-qPCR) demonstrated that EPEs may induce sewage overflows and fecal pollution (mainly from humans and dogs), resulting in an increase in the relative abundance of pollution indicator taxa and genes in Yundang lagoon. Network analysis illustrated that the number of network edges and keystone species decreased along the sampling times, implying that EPEs-induced disturbances may affect prokaryotic species associations. Taken together, this study provides an enhanced understanding of the responses of lagoon prokaryotic communities to EPEs-induced disturbances.
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Affiliation(s)
- Hongjie Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoyong Yang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
| | - Qingfu Chen
- Yundang Lake Management Center, Xiamen, Fujian 361004, China
| | - Jian-Qiang Su
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China
| | - Sikandar I Mulla
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China; Department of Biochemistry, School of Applied Sciences, Reva University, Bangalore 560 064, India
| | - Azhar Rashid
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China; Nuclear Institute for Food and Agriculture, Tarnab, Peshawar, Pakistan
| | - Anyi Hu
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China.
| | - Chang-Ping Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
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Botturi A, Daneshgar S, Cordioli A, Foglia A, Eusebi AL, Fatone F. An innovative compact system for advanced treatment of combined sewer overflows (CSOs) discharged into large lakes: Pilot-scale validation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 256:109937. [PMID: 31818744 DOI: 10.1016/j.jenvman.2019.109937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/13/2019] [Accepted: 11/26/2019] [Indexed: 06/10/2023]
Abstract
Combined sewer overflows discharging into natural water bodies could potentially contaminate them in terms of conventional wastewater parameters and coliform bacteria. When green water infrastructures are not technically feasible or practically sustainable for stormwater management, innovative compact and effective end-of-pipe systems can be of interest. This study presents long-term and real-environment validated data of a compact and rapid treatment system specifically applicable to CSOs that consists of a dynamic rotating belt filter, adsorption on granular activated carbon and UV disinfection steps. The results of treatment for Lake Garda in Italy, showed great potential for TSS, COD and E. coli removal efficiencies with more than 90%, 69% and 99% respectively. Due to the short contact time of GAC adsorption, nutrients removals were not very high. TN and TP removal of around 41% and 19% were observed respectively that suggests further specific nutrients removal processes are required for achieving higher efficiencies. The treatment system, due to its compactness and rapidness could be a great asset for water utilities in different EU catchments that are dealing with the frequent CSO events. In addition, the possibility of using different combinations of treatment steps allows the choice of different treatment scenarios depending on the treatment goals for any specific catchment.
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Affiliation(s)
- A Botturi
- Department of Biotechnology, University of Verona, 37134, Verona, Italy
| | - S Daneshgar
- Department of Biotechnology, University of Verona, 37134, Verona, Italy.
| | - A Cordioli
- Azienda Gardesana Servizi, 37019, Peschiera Del Garda, Italy
| | - A Foglia
- Department of Science and Engineering of Materials, Environment and City Planning, Polytechnic University of Marche, 60131, Ancona, Italy
| | - A L Eusebi
- Department of Science and Engineering of Materials, Environment and City Planning, Polytechnic University of Marche, 60131, Ancona, Italy.
| | - F Fatone
- Department of Science and Engineering of Materials, Environment and City Planning, Polytechnic University of Marche, 60131, Ancona, Italy
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Bradley PM, Journey CA, Button DT, Carlisle DM, Huffman BJ, Qi SL, Romanok KM, Van Metre PC. Multi-region assessment of pharmaceutical exposures and predicted effects in USA wadeable urban-gradient streams. PLoS One 2020; 15:e0228214. [PMID: 31999738 PMCID: PMC6992211 DOI: 10.1371/journal.pone.0228214] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 01/09/2020] [Indexed: 12/31/2022] Open
Abstract
Human-use pharmaceuticals in urban streams link aquatic-ecosystem health to human health. Pharmaceutical mixtures have been widely reported in larger streams due to historical emphasis on wastewater-treatment plant (WWTP) sources, with limited investigation of pharmaceutical exposures and potential effects in smaller headwater streams. In 2014-2017, the United States Geological Survey measured 111 pharmaceutical compounds in 308 headwater streams (261 urban-gradient sites sampled 3-5 times, 47 putative low-impact sites sampled once) in 4 regions across the US. Simultaneous exposures to multiple pharmaceutical compounds (pharmaceutical mixtures) were observed in 91% of streams (248 urban-gradient, 32 low-impact), with 88 analytes detected across all sites and cumulative maximum concentrations up to 36,142 ng/L per site. Cumulative detections and concentrations correlated to urban land use and presence/absence of permitted WWTP discharges, but pharmaceutical mixtures also were common in the 75% of sampled streams without WWTP. Cumulative exposure-activity ratios (EAR) indicated widespread transient exposures with high probability of molecular effects to vertebrates. Considering the potential individual and interactive effects of the detected pharmaceuticals and the recognized analytical underestimation of the pharmaceutical-contaminant (unassessed parent compounds, metabolites, degradates) space, these results demonstrate a nation-wide environmental concern and the need for watershed-scale mitigation of in-stream pharmaceutical contamination.
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Affiliation(s)
- Paul M. Bradley
- U.S. Geological Survey, Columbia, South Carolina, United States of America
| | - Celeste A. Journey
- U.S. Geological Survey, Columbia, South Carolina, United States of America
| | - Daniel T. Button
- U.S. Geological Survey, Columbus, Ohio, United States of America
| | | | - Bradley J. Huffman
- U.S. Geological Survey, Columbia, South Carolina, United States of America
| | - Sharon L. Qi
- U.S. Geological Survey, Beaverton, Oregon, United States of America
| | - Kristin M. Romanok
- U.S. Geological Survey, Lawrenceville, New Jersey, United States of America
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50
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Bulloch P, Schur S, Muthumuni D, Xia Z, Johnson W, Chu M, Palace V, Su G, Letcher R, Tomy GT. F 2-isoprostanes in Fish mucus: A new, non-invasive method for analyzing a biomarker of oxidative stress. CHEMOSPHERE 2020; 239:124797. [PMID: 31521930 DOI: 10.1016/j.chemosphere.2019.124797] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 09/04/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
F2-isoprostanes (F2-isoPs) are a reliable biomarker class for oxidative stress in vivo in animals. These compounds are traditionally measured in matrices like liver and plasma, however social and environmental pressures warrant the development of non-lethal and non-invasive methods to assess animal health. Therefore, this study aimed to develop a high-performance liquid chromatography tandem mass spectrometry (HPLC-ESI-MS/MS) method to separate and detect F2-isoPs in fish mucus. The method was developed and validated for four native F2-isoP isomers using Northern pike mucus (Esox lucius). Linearity was observed between 5 and 1000 pg/μL. The limits of detection of the four F2-IsoP isomers ranged from 0.63 to 2.0 ng/g. Recoveries ranged from 78 to 95%, and matrix effects were small (<10%). The between-day and within-day repeatability for all target analytes was lower than 20% RSD. Endogenous F2-isoPs were measured in the pike mucus (5.3-28.8 ng/g). A preliminary study of baseline F2-isoP concentrations in lake trout (Salvelinus namaycush) captured from five lakes at the IISD-Experimental Lakes Area in Northwestern Ontario, Canada, was also conducted to test the interspecies applicability of the method. Endogenous F2-isoPs were quantified in lake trout (6.3-132 ng/g). Lake trout samples displayed large variability within and between the different lakes, which suggests sampling methods may require adjustment for this species. This work developed a sensitive analytical method for measuring F2-isoPs in fish mucus, however several further studies are required to determine its ability to accurately measure oxidative stress in fish species.
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Affiliation(s)
- Patrique Bulloch
- Centre for Oil and Gas Research, University of Manitoba, Department of Chemistry, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Sara Schur
- Centre for Oil and Gas Research, University of Manitoba, Department of Chemistry, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Dhasni Muthumuni
- Centre for Oil and Gas Research, University of Manitoba, Department of Chemistry, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Zhe Xia
- Centre for Oil and Gas Research, University of Manitoba, Department of Chemistry, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Wesley Johnson
- Centre for Oil and Gas Research, University of Manitoba, Department of Chemistry, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Mitchell Chu
- Centre for Oil and Gas Research, University of Manitoba, Department of Chemistry, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Vince Palace
- International Institute for Sustainable Development - Experimental Lakes Area, Winnipeg, Manitoba, R3B 0T4, Canada
| | - Guanyong Su
- Environment and Climate Change Canada, Ecotoxicology and Wildlife Health Division, National Wildlife Research Centre, Carleton University, Ottawa, ON, K1A 0H3, Canada; Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Robert Letcher
- Environment and Climate Change Canada, Ecotoxicology and Wildlife Health Division, National Wildlife Research Centre, Carleton University, Ottawa, ON, K1A 0H3, Canada
| | - Gregg T Tomy
- Centre for Oil and Gas Research, University of Manitoba, Department of Chemistry, Winnipeg, Manitoba, R3T 2N2, Canada.
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