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| Removal of antibiotic-resistant bacteria(ARB)and antibiotic-resistance genes(ARGs)in the effluent of wastewater treatment plants (WWTPs)via advanced treatment processes |
| Received:January 16, 2018 |
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| KeyWord:antibiotic-resistant bacteria (ARB);antibiotic-resistance genes (ARGs);advanced treatment process;removal efficiency;removal mechanism |
| Author Name | Affiliation | E-mail | | ZHANG Zhi-guo | School of Energy and Environment, Southeast University, Nanjing 210096, China
Agricultural Clear Watershed Group, Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China | | | LI Bin-xu | Agricultural Clear Watershed Group, Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China | | | LI Na | Agricultural Clear Watershed Group, Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China | | | XU Kun | School of Energy and Environment, Southeast University, Nanjing 210096, China | | | ZHU Chang-xiong | Agricultural Clear Watershed Group, Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China | | | LI Hong-na | Agricultural Clear Watershed Group, Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China | lihongna828@163.com | | LÜ Xi-wu | School of Energy and Environment, Southeast University, Nanjing 210096, China | xiwulu@seu.edu.cn |
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| Abstract: |
| Antibiotic-resistant bacteria (ARB) and antibiotic-resistance genes (ARGs), promoted by the improper use of antibiotics, have been frequently detected in various aquatic environments. They have caused potential hazard to both human health and ecological security. Antibiotic resistance exists for quite a long time, even in the absence of antibiotics, and ARGs can be further disseminated through horizontal gene transfer (HGT). Wastewater treatment plants (WWTPs) are a reservoir of ARB and ARGs and play an important part in their elimination. As a result, it is of great importance and necessity to explore an efficient advanced treatment process to remove ARB and ARGs properly. The aim of this review is to provide the current knowledge regarding inactivation of ARB and ARGs, with different advanced treatment processes in the effluent of WWTPs (chlorination, UV irradiation, ozonation, photo/H2O2, photo Fenton, and photocatalytic oxidation). The inactivation effects on ARB and ARGs with constructed wetlands, coagulation, and membrane treatment were also summarized. Finally, advice and suggestions were proposed for the future research direction:(1) The efficiency and mechanism of integrated processes on the removal of ARB and ARGs should be explored; (2) The behavior of various mobile genetic elements (MGEs) and their correlations with ARGs during the different advanced treatment processes should be further studied; (3) The scope of mechanism research should be extended to reverse transcription of ARB; and (4) More effective quantitative determination of ARGs should be exploited, as real-time fluorescence quantitative PCR may underestimate the removal efficiency of ARGs by advanced treatment processes. |
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