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Shen W, Zhang H, Li X, Qi D, Liu R, Kang G, Liu J, Li N, Zhang S, Hu S. Pathogens and antibiotic resistance genes during the landfill leachate treatment process: Occurrence, fate, and impact on groundwater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:165925. [PMID: 37544439 DOI: 10.1016/j.scitotenv.2023.165925] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/28/2023] [Accepted: 07/29/2023] [Indexed: 08/08/2023]
Abstract
Landfill leachate is an essential source of pathogens and antibiotic resistance genes (ARGs) in the environment. However, information on the removal behavior of pathogens and ARGs during the leachate treatment and the impact on surrounding groundwater is limited. In this study, we investigated the effects of leachate treatment on the removal of pathogens and ARGs with metagenomic sequencing, as well as the impact of landfill effluent on groundwater. It is shown that the leachate treatment could not completely remove pathogens and ARGs. Twenty-nine additional pathogens and twenty-nine ARGs were newly identified in the landfill effluent. The relative abundance of pathogens and multiple antibiotic resistance genes decreased after ultrafiltration but relative abundance increased after reverse osmosis. In addition, the relative abundances of Acinetobacter baumannii, Erwinia amylovora, Escherichia coli, Fusarium graminearum, Klebsiella pneumoniae, and Magnaporthe oryzae, as well as mdtH, VanZ, and blaOXA-53 increased significantly in the landfill effluent compared to the untreated leachate. The relative abundance of some mobile genetic elements (tniA, tniB, tnpA, istA, IS91) in leachate also increased after ultrafiltration and reverse osmosis. The size of pathogens, the size and properties of ARGs and mobile genetic elements, and the materials of ultrafiltration and reverse osmosis membranes may affect the removal effect of pathogens, ARGs and mobile genetic elements in leachate treatment process. Interestingly, the pathogens and ARGs in landfill effluent were transferred to groundwater according to SourceTracker. The ARGs, mobile genetic elements, and pathogens that are difficult to remove in the leachate treatment process, provide a reference for optimizing the leachate treatment process and improving the control of pathogens and ARGs. Furthermore, this study clarifies the effect of landfill leachate sources of pathogens and ARGs in groundwater.
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Affiliation(s)
- Weitao Shen
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; Key Laboratory of Environment Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Houhu Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Xuejian Li
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; Department of Engineering, China Pharmaceutical University, Nanjing 211198, China
| | - Dan Qi
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Ran Liu
- Key Laboratory of Environment Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Guodong Kang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Jinglong Liu
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Nan Li
- Zhongda Hospital Southeast University, Nanjing 210009, China
| | - Shenghu Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
| | - Shuangqing Hu
- State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, Shanghai Academy of Environment Sciences, Shanghai 200233, China.
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Ettaloui Z, Rifi SK, Haddaji C, Pala A, Taleb A, Souabi S. A study on the efficiency of the sequential batch reactor on the reduction of wastewater pollution from oil washing. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:387. [PMID: 36764969 DOI: 10.1007/s10661-023-11008-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: 06/06/2022] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Industrial pollution discharges from washing fuel oils pose severe problems for the environment, particularly for the marine environment receiving these discharges. This work evaluates the biological treatment performance of wastewater (90 m3/h) rich in organic matter with low biodegradability using a sequential batch reactor (SBR) on a laboratory scale. The test using SBR was carried out for 25 days on a continuous cycle of 24 h (30 min of filling, 17 h of aeration, 4 h of anoxia, 2 h of settling, and 30 min of emptying). The feasibility of alternative sources of microorganisms from urban wastewater. The performance of the batch sequencing reactor was evaluated using turbidity, total suspended solids, chemical oxygen demand (COD), biological oxygen demand (BOD), ammonium, nitrate, and phenol as indicators. The results obtained showed that the COD/BOD ratio and the pollutant load vary from one campaign to another. The removal efficiency of COD, BOD, TSS (Total suspended solids), ammonium, nitrate, and phenol varies from 81%, 91%, 72%, 100%, 52%, and 63%. Thus, SBR-type treatment could be an interesting way to reduce pollution due to its simplicity, less space occupation, low energy consumption, and not requiring highly qualified personnel.
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Affiliation(s)
- Zineb Ettaloui
- Laboratory of Process Engineering and Environment, Faculty of Sciences & Technologies Mohammedia, Hassan II University, Casablanca, Morocco
| | - Safaa Khattabi Rifi
- Laboratory of Process Engineering and Environment, Faculty of Sciences & Technologies Mohammedia, Hassan II University, Casablanca, Morocco.
| | - Chaymae Haddaji
- Laboratory of Process Engineering and Environment, Faculty of Sciences & Technologies Mohammedia, Hassan II University, Casablanca, Morocco
| | - Aysegul Pala
- Environmental Research and Development Center (CEVMER), Dokuz Eylul University, Izmir, Turkey
| | - Abdesalam Taleb
- Laboratory of Process Engineering and Environment, Faculty of Sciences & Technologies Mohammedia, Hassan II University, Casablanca, Morocco
| | - Salah Souabi
- Laboratory of Process Engineering and Environment, Faculty of Sciences & Technologies Mohammedia, Hassan II University, Casablanca, Morocco
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Goren A, Jarma Y, Kabay N, Baba A, Okten H. Boron Removal from Geothermal Brine Using Hybrid Reverse Osmosis/Microbial Desalination Cell System. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.123006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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