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目的调查自贡市乡镇自来水厂消毒副产物的现状。方法 2010年分别在丰水期和枯水期对32家乡镇自来水厂进行卫生学调查并对源水、出厂水及末梢水中三卤甲烷、卤乙酸等指标进行测定。结果 32家自来水厂均检出氯化消毒副产物,包括4种三卤甲烷(三氯甲烷、二氯一溴甲烷、一氯二溴甲烷和三溴甲烷)和2种卤乙酸(二氯乙酸、三氯乙酸),三氯甲烷超标率为28%,二氯乙酸超标率为22%,二氯一溴甲烷超标率为3%。结论自贡市乡镇水厂均存在不同程度的消毒副产物污染,其对居民身体健康的影响不容忽视。
Objective To investigate the status quo of disinfection byproducts in township waterworks in Zigong City. Methods In 2010, the health survey was conducted on 32 township tap water plants in the wet season and dry season, and the indicators such as trihalomethanes and haloacetic acids in the source water, the factory water and the peripheral water were determined. Results Chlorination disinfection byproducts were detected in 32 waterworks, including 4 trihalomethanes (trichloromethane, dichlorobromomethane, chlorodibromomethane and tribromomethane) and 2 haloacetic acids (dichloroacetic acid, trichloro Acetic acid), chloroform exceeded 28%, dichloroacetic acid exceeded the rate of 22%, dichlorobromomethane methane exceeded the rate of 3%. Conclusion There are different degrees of disinfection by-products pollution in township waterworks in Zigong City. The impact on residents’ health can not be ignored.