二氧化氯与氯联合控制水中消毒副产物生成量  

Study on disinfection by-products control in water disinfected by combination of chlorine dioxide and chlorine

作　　者：张念华 鲁翌[1] 汪亚洲[1] 唐非[1] 

机构地区：[1]华中科技大学同济医学院公共卫生学院环境医学研究所教育部环境与健康重点实验室,武汉430030

出　　处：《中国公共卫生》2006年第3期299-301,共3页Chinese Journal of Public Health

基　　金：科技部SARS专项研究课题(2003A007);华中科技大学同济医学院基金(4083663018)

摘　　要：目的 研究二氧化氯和氯联合消毒对水中消毒副产物生成量影响。方法 以武汉汉江水源水为对象，运用化学分析和生物学试验的方法，分析不同配比的二氧化氯和氯联合消毒对水中有机和无机消毒副产物生成量的影响。结果 不同配比的二氧化氯和氯联合消毒。在pH为6的水样中，亚氯酸盐生成量随加氯量的增加明显减少；统计分析显示在pH6与pH7、pH8水样之间亚氯酸盐含量差异有统计学意义；与单一加氯消毒水样相比。联合消毒水样中三氯甲烷、二氯乙酸和三氯乙酸分别下降50％～86％，20％～63％和35％～85％，非挥发性有机物对TA98菌株的致突变比活性也有所降低。结论 当ClO2和Cl2联合投加量为0．5＋4，1．0＋2，1．0＋4，1．5＋2，1．5＋4mg／L时，水中氯化消毒副产物的生成量以及非挥发性有机物的致突变比活性低于单一加氯消毒水样。Objective To study the decrease of disinfection by-products in water samples disinfected by combination of chlorine dioxide and chlorine. Methods The raw water samples collected from the Wuhan Hanjiang were treated by the different doses combination of chlorine dioxide and chlorine. The amounts of disinfection by-produets（DBPs）in water samples were detected and compared by using ehenieal analysis and biological tests. Results The amounts of chlorite were influenced by levels of pH in water samples disinfected by the different combined doses of chlorine dioxide and chlorine. Decrease in amounts of chlorite showesd a consistent patterns in different pH water samples, with decrease in order pH6 〉 pH7 〉 ph8. By statistical analysis, the amounts of chlorite had an obvious difference in the water between pH6 and pH7, pH8. Compared with the water samples disinfected by chlorine alone , the amounts of trichloromethane, dichloroaceic acid and trichoroacetic acid were respectively decreased 50 96 ～86 %, 20 96～63 % and 35 % ～85 96 in water samples disinfected by combination with chlorine dioxide and chlorine. The mutagenic activities of non-volatile organic compounds（NVOCs） in water samples disinfected by the different combined doses of chlorine dioxide and chlorine were lower than those of the water samples disinfected by chlorine alone. Conclusion While the combined doses of chlorine dioxide and chlorine were 0.5 ＋ 4, 1.0 ＋ 2, 1.0 ＋ 4, 1.5 ＋ 2, 1.5 ＋ 4 mg/L, the amounts of DBPs and mutagenic activities of NVOCs were lower than those of the water samples disinfected by chlorine.

关 键 词：二氧化氯 氯 联合消毒 消毒副产物 

分 类 号：R123.6[医药卫生—环境卫生学]