Study on the Genotozicity of Source Water and Drinking Water during Chlorine and Chloramine Disinfection using the Umu-Test
Potential effects of chlorine and chloramine disinfection on genotoxicity of source water and effluent of ozone-biological activated carbon (O3-BAC) were investigated using umu-test. It is found that genotoxicity of both source water and effluent of O3-BAC became higher after disinfection. Genotoxicity after chlorine disinfection was higher than that after chloramines disinfection for 24h under the same initial dosage, which demonstrated that chloramine disinfection was safer than chlorine disinfection in the aspect of genotoxicity for drinking water. For chlorine disinfection, changes in genotoxicity of source water and effluent of O3-BAC were similar, which increased firstly then decreased and finally increased again with initial dosage increasing. For chloramine disinfection, genotoxicity of source water and effluent of O3-BAC both didn’t change that much. Further more, effect of different disinfection time on genotoxicity of source water and effluent of O3-BAC was also studied. Results of this study were of some engineering significance for optimizing the operation of water plants, but further study on the forming mechanisms of genotoxicity of drinking water after disinfection is urgently required.
genotozicity source water drinking water chlorine chloramines disinfection umu-test
LIU Wenjun LIU Qing ZHANG Liping NIE Xuebiao GAO Jingwei
Division of Drinking Water Safety,Department of Environmental Science and Engineering,Tsinghua University,Beijing 100084,China
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
283-288
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）