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Ruan W, Peng Y, Liao R, Man Y, Tai Y, Tam NFY, Zhang L, Dai Y, Yang Y. Removal, transformation and ecological risk assessment of pesticide in rural wastewater by field-scale horizontal flow constructed wetlands of treated effluent. WATER RESEARCH 2024; 256:121568. [PMID: 38593607 DOI: 10.1016/j.watres.2024.121568] [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: 01/19/2024] [Revised: 03/26/2024] [Accepted: 04/02/2024] [Indexed: 04/11/2024]
Abstract
Constructed wetlands (CWs) are widely used in sewage treatment in rural areas, but there are only a few studies on field-scale CWs in treating wastewater-borne pesticides. In this study, the treatment and metabolic transformation of 29 pesticides in rural domestic sewage by 10 field-scale horizontal flow CWs (HF-CWs), each with a treatment scale of 36‒5000 m3/d and operated for 2‒10 years, in Guangzhou, Southern China was investigated. The risk of pesticides in treated effluent and main factors influencing such risk were evaluated. Results demonstrated that HF-CWs could remove pesticides in sewage and reduce their ecological risk in effluent, but the degree varied among types of pesticides. Herbicides had the highest mean removal rate (67.35 %) followed by insecticides (60.13 %), and the least was fungicides (53.22 %). In terms of single pesticide compounds, the mean removal rate of butachlor was the highest (73.32 %), then acetochlor (69.41 %), atrazine (68.28 %), metolachlor (58.40 %), and oxadixyl (53.28 %). The overall removal rates of targeted pesticides in each HF-CWs ranged from 11 %‒57 %, excluding two HF-CWs showing increases in pesticides in treated effluent. Residues of malathion, phorate, and endosulfan in effluent had high-risks (RQ > 5). The pesticide concentration in effluent was mainly affected by that in influent (P = 0.042), and source control was the key to reducing risk. The main metabolic pathways of pesticide in HF-CWs were oxidation, with hydroxyl group to carbonyl group or to form sulfones, the second pathways by hydrolysis, aerobic condition was conducive to the transformation of pesticides. Sulfones were generally more toxic than the metabolites produced by hydrolytic pathways. The present study provides a reference on pesticides for the purification performance improvement, long-term maintenance, and practical sustainable application of field-scale HF-CWs.
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Affiliation(s)
- Weifeng Ruan
- Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, China
| | - Yanqin Peng
- Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, China
| | - Ruomei Liao
- Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, China
| | - Ying Man
- Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China; School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Yiping Tai
- Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, China.
| | - Nora Fung-Yee Tam
- School of Science and Technology, The Hong Kong Metropolitan University, Ho Man Tin, Kowloon 999077, Hong Kong, China
| | - Longzhen Zhang
- Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China
| | - Yunv Dai
- Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, China
| | - Yang Yang
- Institute of Hydrobiology and Department of Ecology, Jinan University, Guangzhou 510632, China; Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, China.
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A Literature Review of Wetland Treatment Systems Used to Treat Runoff Mixtures Containing Antibiotics and Pesticides from Urban and Agricultural Landscapes. WATER 2021. [DOI: 10.3390/w13243631] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Wetland treatment systems are used extensively across the world to mitigate surface runoff. While wetland treatment for nitrogen mitigation has been comprehensively reviewed, the implications of common-use pesticides and antibiotics on nitrogen reduction remain relatively unreviewed. Therefore, this review seeks to comprehensively assess the removal of commonly used pesticides and antibiotics and their implications for nitrogen removal in wetland treatment systems receiving non-point source runoff from urban and agricultural landscapes. A total of 181 primary studies were identified spanning 37 countries. Most of the reviewed publications studied pesticides (n = 153) entering wetlands systems, while antibiotics (n = 29) had fewer publications. Even fewer publications reviewed the impact of influent mixtures on nitrogen removal processes in wetlands (n = 16). Removal efficiencies for antibiotics (35–100%), pesticides (−619–100%), and nitrate-nitrogen (−113–100%) varied widely across the studies, with pesticides and antibiotics impacting microbial communities, the presence and type of vegetation, timing, and hydrology in wetland ecosystems. However, implications for the nitrogen cycle were dependent on the specific emerging contaminant present. A significant knowledge gap remains in how wetland treatment systems are used to treat non-point source mixtures that contain nutrients, pesticides, and antibiotics, resulting in an unknown regarding nitrogen removal efficiency as runoff contaminant mixtures evolve.
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Negrete-Bolagay D, Zamora-Ledezma C, Chuya-Sumba C, De Sousa FB, Whitehead D, Alexis F, Guerrero VH. Persistent organic pollutants: The trade-off between potential risks and sustainable remediation methods. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 300:113737. [PMID: 34536739 DOI: 10.1016/j.jenvman.2021.113737] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 06/13/2023]
Abstract
Persistent Organic Pollutants (POPs) have become a very serious issue for the environment because of their toxicity, resistance to conventional degradation mechanisms, and capacity to bioconcentrate, bioaccumulate and biomagnify. In this review article, the safety, regulatory, and remediation aspects of POPs including aromatic, chlorinated, pesticides, brominated, and fluorinated compounds, are discussed. Industrial and agricultural activities are identified as the main sources of these harmful chemicals, which are released to air, soil and water, impacting on social and economic development of society at a global scale. The main types of POPs are presented, illustrating their effects on wildlife and human beings, as well as the ways in which they contaminate the food chain. Some of the most promising and innovative technologies developed for the removal of POPs from water are discussed, contrasting their advantages and disadvantages with those of more conventional treatment processes. The promising methods presented in this work include bioremediation, advanced oxidation, ionizing radiation, and nanotechnology. Finally, some alternatives to define more efficient approaches to overcome the impacts that POPs cause in the hydric sources are pointed out. These alternatives include the formulation of policies, regulations and custom-made legislation for controlling the use of these pollutants.
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Affiliation(s)
- Daniela Negrete-Bolagay
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Camilo Zamora-Ledezma
- Tissue Regeneration and Repair: Orthobiology, Biomaterials & Tissue Engineering Research Group, UCAM - Universidad Católica de Murcia, Avda. Los Jerónimos 135, Guadalupe, 30107, Murcia, Spain.
| | - Cristina Chuya-Sumba
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Frederico B De Sousa
- Laboratório de Sistemas Poliméricos e Supramoleculares, Physics and Chemistry Institute, Federal University of Itajubá, 37500-903, Itajubá, Brazil.
| | - Daniel Whitehead
- Department of Chemistry, Clemson University, Clemson, SC, 29634, USA.
| | - Frank Alexis
- School of Biological Sciences and Engineering, Yachay Tech University, 100119, Urcuquí, Ecuador.
| | - Victor H Guerrero
- Department of Materials, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, Quito, 170525, Ecuador.
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Malyan SK, Yadav S, Sonkar V, Goyal VC, Singh O, Singh R. Mechanistic understanding of the pollutant removal and transformation processes in the constructed wetland system. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:1882-1909. [PMID: 34129692 DOI: 10.1002/wer.1599] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 04/12/2021] [Accepted: 05/29/2021] [Indexed: 06/12/2023]
Abstract
Constructed wetland systems (CWs) are biologically and physically engineered systems to mimic the natural wetlands which can potentially treat the wastewater from the various point and nonpoint sources of pollution. The present study aims to review the various mechanisms involved in the different types of CWs for wastewater treatment and to elucidate their role in the effective functioning of the CWs. Several physical, chemical, and biological processes substantially influence the pollutant removal efficiency of CWs. Plants species Phragmites australis, Typha latifolia, and Typha angustifolia are most widely used in CWs. The rate of nitrogen (N) removal is significantly affected by emergent vegetation cover and type of CWs. Hybrid CWs (HCWS) removal efficiency for nutrients, metals, pesticides, and other pollutants is higher than a single constructed wetland. The contaminant removal efficiency of the vertical subsurface flow constructed wetlands (VSSFCW) commonly used for the treatment of domestic and municipal wastewater ranges between 31% and 99%. Biochar/zeolite addition as substrate material further enhances the wastewater treatment of CWs. Innovative components (substrate materials, plant species) and factors (design parameters, climatic conditions) sustaining the long-term sink of the pollutants, such as nutrients and heavy metals in the CWs should be further investigated in the future. PRACTITIONER POINTS: Constructed wetland systems (CWs) are efficient natural treatment system for on-site contaminants removal from wastewater. Denitrification, nitrification, microbial and plant uptake, sedimentation and adsorption are crucial pollutant removal mechanisms. Phragmites australis, Typha latifolia, and Typha angustifolia are widely used emergent plants in constructed wetlands. Hydraulic retention time (HRT), water flow regimes, substrate, plant, and microbial biomass substantially affect CWs treatment performance.
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Affiliation(s)
- Sandeep K Malyan
- Research Management and Outreach Division, National Institute of Hydrology, Roorkee, India
| | - Shweta Yadav
- Research Management and Outreach Division, National Institute of Hydrology, Roorkee, India
| | - Vikas Sonkar
- Research Management and Outreach Division, National Institute of Hydrology, Roorkee, India
| | - V C Goyal
- Research Management and Outreach Division, National Institute of Hydrology, Roorkee, India
| | - Omkar Singh
- Research Management and Outreach Division, National Institute of Hydrology, Roorkee, India
| | - Rajesh Singh
- Environmental Hydrology Division, National Institute of Hydrology, Roorkee, Uttarakhand, India
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Tondera K, Chazarenc F, Chagnon PL, Brisson J. Bioaugmentation of treatment wetlands - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 775:145820. [PMID: 33618303 DOI: 10.1016/j.scitotenv.2021.145820] [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: 10/12/2020] [Revised: 01/18/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Bioaugmentation in the form of artificial mycorrhization of plant roots and bacterial inoculation has been successfully implemented in several fields including soil remediation or activated sludge treatment. Likewise, bioaugmentation seems a promising approach to improve the functioning of treatment wetlands, considering that natural mycorrhization has been detected in treatment wetlands and that bacteria are the main driver of contaminant degradation processes. However, to date, full scale implementation seems to be rare. This review synthesizes the effects of bioaugmentation on different types of treatment wetlands, to a large extent performed on a microcosm (<0.5 m2) or mesocosm scale (0.51 to 5 m2). While inoculation with arbuscular mycorrhizal fungi tended to show a positive effect on the growth of some wetland plants (e.g. Phragmites australis), the mechanisms underlying such positive effects are not well understood and the effects of upscaling to full scale treatment wetlands remain unknown. Bacterial inoculation tended to promote plant growth and pollutant degradation, but longer term data is required.
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Affiliation(s)
- Katharina Tondera
- INRAE, REVERSAAL, F-69625 Villeurbanne, France; IMT Atlantique Bretagne-Pays de Loire, Department of Energy Systems and Environment, 44307 Nantes, France.
| | | | - Pierre-Luc Chagnon
- Institut de recherche en biologie végétale, Département de sciences biologiques, Université de Montréal, Montréal, Canada.
| | - Jacques Brisson
- Institut de recherche en biologie végétale, Département de sciences biologiques, Université de Montréal, Montréal, Canada.
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Delgado N, Bermeo L, Hoyos DA, Peñuela GA, Capparelli A, Marino D, Navarro A, Casas-Zapata JC. Occurrence and removal of pharmaceutical and personal care products using subsurface horizontal flow constructed wetlands. WATER RESEARCH 2020; 187:116448. [PMID: 33007670 DOI: 10.1016/j.watres.2020.116448] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 09/19/2020] [Accepted: 09/22/2020] [Indexed: 06/11/2023]
Abstract
A significant number of emerging pollutants resulting from point source and diffuse pollution are present in the aquatic environment. These are chemicals that are not commonly monitored, but have the potential to cause adverse effects on human and ecological health. One form of emerging pollutants, pharmaceutical and personal care products (PPCPs), are becoming a serious problem in the discharge of domestic wastewater. Therefore, the aim of this study was to determine their occurrence in wastewater and surface waters, and to evaluate the efficiency of subsurface horizontal flow constructed wetlands (planted in polyculture and unplanted), in removing two pharmaceuticals: carbamazepine (Cbz) and sildenafil (Sil); and a personal care product: methylparaben (Mp), present in domestic wastewater. The mixed PPCPs were added to wetlands, at nominal concentrations of 200 μg / L for each compound. The working flow of the reactors was 15 mL / min and the hydraulic retention time was three days. The physicochemical parameters evaluated were: organic load, dissolved oxygen, temperature, conductivity, redox potential, dissolved solids, pH and PPCPs concentration. The presence of the three compounds became evident in all sampled sites, with concentrations of up to 10.66 μg / L, 7.24 μg / L and 2.64 μg / L for Cbz, Mp and Sil, respectively. In planted wetlands, removal efficiencies of up to 97% were achieved for Sil, while in the unplanted these were 30% lower. Removal efficiencies greater than 97% were achieved for Mp, however, for Cbz they were less than 10%, evaluated in both treatments. The average removal efficiency for organic load was 95%. It was determined that constructed wetlands can efficiently remove simple molecular structure compounds such as Mp, and complex structures such as Sil. However, Cbz remained as a recalcitrant contaminant.
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Affiliation(s)
- Nasly Delgado
- Centro de Investigaciones del Medio Ambiente, Facultad de Ciencias Exactas, Universidad Nacional de la Plata (UNLP), 47 y 115, La Plata 1900, Argentina.; Grupo de Ciencia e Ingeniería en Sistemas Ambientales, Facultad de Ingeniería Civil, Universidad del Cauca, Carrera 2 # 15N, Popayán 190002, Colombia.; Consejo Nacional de Investigaciones Científicas y Técnicas, La Plata, Argentina
| | - Lizeth Bermeo
- Grupo de Ciencia e Ingeniería en Sistemas Ambientales, Facultad de Ingeniería Civil, Universidad del Cauca, Carrera 2 # 15N, Popayán 190002, Colombia
| | - Daniel A Hoyos
- Grupo de Ciencia e Ingeniería en Sistemas Ambientales, Facultad de Ingeniería Civil, Universidad del Cauca, Carrera 2 # 15N, Popayán 190002, Colombia
| | - Gustavo A Peñuela
- Grupo de Diagnóstico y Control de la Contaminación, Universidad de Antioquia, Calle 70 # 52-21, Medellín 050012, Colombia
| | - Alberto Capparelli
- Cátedra de Fisicoquímica, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de la Plata (UNLP), 47 y 115, La Plata 1900, Argentina
| | - Damián Marino
- Centro de Investigaciones del Medio Ambiente, Facultad de Ciencias Exactas, Universidad Nacional de la Plata (UNLP), 47 y 115, La Plata 1900, Argentina.; Consejo Nacional de Investigaciones Científicas y Técnicas, La Plata, Argentina
| | - Agustín Navarro
- Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad Nacional de La Plata, 48 y 115, La Plata 1900, Argentina
| | - Juan C Casas-Zapata
- Grupo de Ciencia e Ingeniería en Sistemas Ambientales, Facultad de Ingeniería Civil, Universidad del Cauca, Carrera 2 # 15N, Popayán 190002, Colombia
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Mosmeri H, Gholami F, Shavandi M, Alaie E, Dastgheib SMM. Application of magnesium peroxide (MgO 2) nanoparticles for toluene remediation from groundwater: batch and column studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:31051-31061. [PMID: 30187405 DOI: 10.1007/s11356-018-2920-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
In the present study, magnesium peroxide (MgO2) nanoparticles were synthesized by electro-deposition process and characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). The batch experiments were conducted to evaluate the MgO2 half-life (600 mg/L) in groundwater under various temperatures (4, 15, and 30 °C) and initial pH (3, 7, and 12). The effect of Fe2+ ions (enhanced oxidation) on the toluene remediation by MgO2 was also investigated. Nanoparticles were injected to sand-packed continuous-flow columns, and toluene removal (50 ppm) was studied within 50 days at 15 °C. The results indicated that the half-life of MgO2 at pH 3 and 12 were 5 and 15 days, respectively, in comparison to 10 days at the initial pH 7 and 15 °C. The nanoparticles showed 20 and 7.5 days half-life at 4 and 30 °C temperatures, respectively. Injection of Fe2+ ions indicated an impressive effect on toluene removal by MgO2, and the contaminant was completely removed after 5 and 10 days, in the batch and column experiments, respectively. Confocal laser scanning microscope (CLSM) analysis indicated that the attached biofilm had a significant role in the decontamination of groundwater. Comparison of bioremediation and enhanced oxidation resulted in a considerable insight into the application of magnesium peroxide in groundwater remediation. Graphical abstract ᅟ.
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Affiliation(s)
- Hamid Mosmeri
- Ecology and Environmental Pollution Control Research Group, Research Institute of Petroleum Industry, West Blvd. of Azadi sport Complex, P.O.Box: 14665-137, Tehran, Iran
| | - Fatemeh Gholami
- Department of Microbiology, College of Science, University of Tehran, Tehran, Iran
| | - Mahmoud Shavandi
- Ecology and Environmental Pollution Control Research Group, Research Institute of Petroleum Industry, West Blvd. of Azadi sport Complex, P.O.Box: 14665-137, Tehran, Iran.
| | - Ebrahim Alaie
- Environment and Biotechnology Research Division, Research Institute of Petroleum Industry, Tehran, Iran
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Kong L, Zhang Y, Zhu L, Wang J, Wang J, Du Z, Zhang C. Influence of isolated bacterial strains on the in situ biodegradation of endosulfan and the reduction of endosulfan- contaminated soil toxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 160:75-83. [PMID: 29793204 DOI: 10.1016/j.ecoenv.2018.05.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 04/22/2018] [Accepted: 05/12/2018] [Indexed: 06/08/2023]
Abstract
The recently discovered endosulfan-degrading bacterial strains Pusillimonas sp. JW2 and Bordetella petrii NS were isolated from endosulfan-polluted water and soil environments. The optimal conditions for the growth and biodegradation activity of the strains JW2 and NS were studied in detail. In addition, the ability of the strains JW2 and NS to biodegrade endosulfan in soils during in situ bioremediation experiments was investigated. At a concentration of 2 mg of endosulfan per kilogram of soil, both JW2 and NS had positive effects on the degradation of endosulfan; JW2 degraded 100% and 91.5% of α- and β-endosulfan, respectively, and NS degraded 95.1% and 90.3% of α- and β-endosulfan, respectively. Polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) of soil samples showed the successful colonization of JW2 and NS, and the toxicity of the soil decreased, as determined by single-cell gel electrophoresis (SCGE) assays of Eiseniafetida and micronucleus (MN) assays of Viciafaba root tip cells. Furthermore, the metabolic products of the bacterially degraded endosulfan from the in situ experiments were identified as endosulfan ether and lactone. This study provided potentially foundational backgrounds information for the remediation of endosulfan-contaminated soil.
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Affiliation(s)
- Lingfen Kong
- Key Laboratory of Agricultural Environment in the University of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China; State Key Laboratory of Marine Environmental Science/College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Yu Zhang
- Key Laboratory of Agricultural Environment in the University of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China
| | - Lusheng Zhu
- Key Laboratory of Agricultural Environment in the University of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China.
| | - Jinhua Wang
- Key Laboratory of Agricultural Environment in the University of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China
| | - Jun Wang
- Key Laboratory of Agricultural Environment in the University of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China
| | - Zhongkun Du
- Key Laboratory of Agricultural Environment in the University of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China
| | - Cheng Zhang
- Key Laboratory of Agricultural Environment in the University of Shandong, College of Resources and Environment, Shandong Agricultural University, Tai'an 271018, China
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Yuan J, Dong W, Sun F, Zhao K. Low temperature effects on nitrification and nitrifier community structure in V-ASP for decentralized wastewater treatment and its improvement by bio-augmentation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:6584-6595. [PMID: 29255983 DOI: 10.1007/s11356-017-0927-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Accepted: 12/03/2017] [Indexed: 06/07/2023]
Abstract
The vegetation-activated sludge process (V-ASP) has been proved to be an environment-friendly decentralized wastewater treatment system with extra esthetic function and less footprint. However, the effects of low temperature on the treatment performance of V-ASP and related improvement methods are rarely investigated, up to now. In this work, the effect of low temperature on nitrification in V-ASP was comprehensively investigated from overall nitrification performance, substrate utilization kinetics, functional enzymatic activities, and microbial community structure shift by comparison with conventional ASP. Bio-augmentation methods in terms of single-time nitrifier-enriched biomass dosage were employed to improve nitrification efficiency in bench- and full-scale systems. The experiment results demonstrated that the NH4+-N removal efficiency in V-ASP system decreased when the operational temperature decreased from 30 to 15 °C, and the decreasing extent was rather smaller compared to ASP, as well as ammonium and nitrite oxidation rates and enzymatic activities, which indicated the V-ASP system possesses high resistance to low temperature. With direct dosage of 1.6 mg nitrifier/gSS sludge, the nitrification efficiency in V-ASP was enhanced dramatically from below 50% to above 90%, implying that bio-augmentation was effective for V-ASP whose enzymatic activities and microbial communities were both also improved. The feasibility and effectiveness of bio-augmentation was further confirmed in a full-scale V-ASP system after a long-term experiment which is instructive for the practical application.
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Affiliation(s)
- Jiajia Yuan
- Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, 518055, China
| | - Wenyi Dong
- Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, 518055, China
| | - Feiyun Sun
- Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, 518055, China.
| | - Ke Zhao
- Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, 518055, China
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10
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Gorito AM, Ribeiro AR, Almeida CMR, Silva AMT. A review on the application of constructed wetlands for the removal of priority substances and contaminants of emerging concern listed in recently launched EU legislation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 227:428-443. [PMID: 28486186 DOI: 10.1016/j.envpol.2017.04.060] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 02/18/2017] [Accepted: 04/08/2017] [Indexed: 06/07/2023]
Abstract
The presence of organic pollutants in the aquatic environment, usually found at trace concentrations (i.e., between ng L-1 and μg L-1 or even lower, known as micropollutants), has been highlighted in recent decades as a worldwide environmental concern due to their difficult elimination by conventional water and wastewater treatment processes. The relevant information on constructed wetlands (CWs) and their application for the removal of a specific group of pollutants, 41 organic priority substances/classes of substances (PSs) and 8 certain other substances with environmental quality standards (EQS) listed in Directive 2013/39/EU as well as 17 contaminants of emerging concern (CECs) of the Watch List of Decision 2015/495/EU, is herein reviewed. Studies were found for 24 PSs and 2 other substances with EQS: octylphenol, nonylphenol, perfluorooctane sulfonic acid, di(2-ethylhexyl)phthalate, trichloromethane, dichloromethane, 1,2-dichloroethane, pentachlorobenzene, benzene, polychlorinated dibenzo-p-dioxins, naphthalene, fluoranthene, trifluralin, alachlor, isoproturon, diuron, tributyltin compounds, simazine, atrazine, chlorpyrifos (chlorpyrifos-ethyl), chlorfenvinphos, hexachlorobenzene, pentachlorophenol, endosulfan, dichlorodiphenyltrichloroethane (or DDT) and dieldrin. A few reports were also published for 8 CECs: imidacloprid, erythromycin, clarithromycin, azithromycin, diclofenac, estrone, 17-beta-estradiol and 17-alpha-ethinylestradiol. No references were found for the other 17 PSs, 6 certain other substances with EQS and 9 CECs listed in EU legislation.
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Affiliation(s)
- Ana M Gorito
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Ana R Ribeiro
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - C M R Almeida
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Adrián M T Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
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Liu J, Wang J, Zhao C, Hay AG, Xie H, Zhan J. Triclosan removal in wetlands constructed with different aquatic plants. Appl Microbiol Biotechnol 2015; 100:1459-1467. [DOI: 10.1007/s00253-015-7063-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/28/2015] [Accepted: 10/06/2015] [Indexed: 10/22/2022]
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Wu H, Fan J, Zhang J, Ngo HH, Guo W, Liang S, Hu Z, Liu H. Strategies and techniques to enhance constructed wetland performance for sustainable wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:14637-14650. [PMID: 26268626 DOI: 10.1007/s11356-015-5151-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 08/03/2015] [Indexed: 06/04/2023]
Abstract
Constructed wetlands (CWs) have been used as an alternative to conventional technologies for wastewater treatment for more than five decades. Recently, the use of various modified CWs to improve treatment performance has also been reported in the literature. However, the available knowledge on various CW technologies considering the intensified and reliable removal of pollutants is still limited. Hence, this paper aims to provide an overview of the current development of CW strategies and techniques for enhanced wastewater treatment. Basic information on configurations and characteristics of different innovations was summarized. Then, overall treatment performance of those systems and their shortcomings were further discussed. Lastly, future perspectives were also identified for specialists to design more effective and sustainable CWs. This information is used to inspire some novel intensifying methodologies, and benefit the successful applications of potential CW technologies.
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Affiliation(s)
- Haiming Wu
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi, 712100, People's Republic of China
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, People's Republic of China
| | - Jinlin Fan
- National Engineering Laboratory of Coal-Fired Pollutants Emission Reduction, Shandong University, Jinan, 250061, People's Republic of China
| | - Jian Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, People's Republic of China.
| | - Huu Hao Ngo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, Sydney, NSW, 2007, Australia
| | - Wenshan Guo
- School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, Sydney, NSW, 2007, Australia
| | - Shuang Liang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, People's Republic of China
| | - Zhen Hu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, People's Republic of China
| | - Hai Liu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan, 250100, People's Republic of China
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
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Wang Z, Dai Y, Zhao Q, Li N, Zhou Q, Xie S. Nonylphenol biodegradation, functional gene abundance and bacterial community in bioaugmented sediment: effect of external carbon source. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:12083-12091. [PMID: 25874439 DOI: 10.1007/s11356-015-4509-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/07/2015] [Indexed: 06/04/2023]
Abstract
Nonylphenol (NP) biodegradation in river sediment using Stenotrophomonas strain Y1 and Sphingobium strain Y2 were proved to be an effective strategy to remediate NP pollution in our earlier study. The purpose of this study is to investigate the influence of glucose addition on their ability to degrade NP in both liquid cultures and sediment microcosms. The shift in bacterial community structure and relative abundance of NP degraders in sediment microcosms were characterized using terminal restriction fragment length polymorphism analysis. The proportion of NP-degrading alkB and sMO genes was assessed using quantitative polymerase chain reaction (PCR) assay. The growth of Stenotrophomonas strain Y1 and its NP biodegradation efficiency were inhibited by glucose supplementation, while the relative abundance of alkB gene increased. However, NP degradation, as well as the growth of added degraders and proportion of sMO gene, was enhanced in the glucose-amended sediment microcosms inoculated with Sphingobium strain Y2. Moreover, external glucose addition altered bacterial community structures in bioaugmented sediment microcosms, depending on the level of glucose dosage.
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Affiliation(s)
- Zhao Wang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
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