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目的研究饮用水中氯化消毒副产物形成的影响因素,为制定控制对策提供依据。方法通过现场采样和理化分析方法,对自贡市城镇36个水厂出厂水和末梢水进行了监测与分析。结果该地区自来水厂经氯化处理的水中氯化副产物检出率较高,其中以三卤甲烷检出率最高,其次是三氯乙酸和二氯乙酸。水源水中有机物含量和氯化消毒工艺对氯化副产物的形成有明显影响。通过改善水质和改进氯化消毒工艺可以降低氯化副产物含量。结论自贡市氯化消毒副产物存在严重污染,消毒副产物的形成与水源水水质质量、消毒剂投入量、氯化消毒工艺、给水处理工艺等因素有关。
Objective To study the influencing factors of formation of chlorinated disinfection by-products in drinking water and provide the basis for making control measures. Methods The sampling and physical and chemical analysis methods were used to monitor and analyze the factory water and the peripheral water of 36 waterworks in Zigong City. Results The detection rate of chlorinated by-products in chlorinated water was high in the waterworks of this area. The detection rate of trihalomethanes was the highest, followed by trichloroacetic acid and dichloroacetic acid. The water content of organic matter and chlorination disinfection process have a significant impact on the formation of chlorinated by-products. Chloride by-product content can be reduced by improving water quality and improving the chlorination process. Conclusion The chlorinated disinfection byproduct in Zigong City is seriously polluted. The formation of disinfection by-products is related to the quality of source water, input of disinfectant, chlorination disinfection process and water treatment process.