Removal of genotoxicity in chlorinated secondary effluent of a domestic wastewater treatment plant during dechlorination |
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| Authors: | Qian-Yuan Wu Yi Li Hong-Ying Hu Ya-Nan Ding Huang Huang Feng-Yun Zhao |
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| Institution: | (1) Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing, 100084, People’s Republic China;(2) Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, People’s Republic China;(3) Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environmental Science and Engineering, Hohai University, Nanjing, 210098, People’s Republic China |
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| Abstract: | Purpose Dechlorination with tetravalent sulfur is widely used in wastewater treatment processes after chlorination. Dechlorination
can remove certain genotoxic disinfection by-products (DBPs). However, the reactions occurring during dechlorination of chlorinated
secondary effluent and their genotoxic chemicals are still very complex, and the related genotoxicity changes remain unknown.
Therefore, the effects of dechlorination on genotoxicity in secondary effluent and its fractions and typical genotoxic chemical
after chlorination were evaluated. |
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