水厂预臭氧化处理过程中消毒副产物的变化研究

VARIATION OF DISINFECTION BYPRODUCTS(DBPs) IN THE WATER PLANT USING PRE-OZONATION TREATMENT

以滦河水为处理对象,对天津市某水厂预臭氧化-紫外+氯联合消毒工艺处理过程中的氯化消毒副产物和臭氧副产物的变化情况进行了分析研究。分别对各处理单元出水中的三卤甲烷生成势(THMFP)、卤乙酸生成势(HAAFP)、甲醛、溴酸盐的含量进行检测。结果表明,原水经过预臭氧化处理后,THMFP和HAAFP的质量浓度均有降低,预臭氧处理单元对THMFP和HAAFP的平均去除率分别为22.76%和22.38%;整套工艺对THMFP和HAAFP的平均去除率分别可达46.23%和55.38%。经预臭氧化处理后,甲醛的浓度上升,但后续工艺对甲醛的去除效果较好,未出现溴酸盐超标。

Study on the variation of disinfection byproducts（DBPs） in a water plant,which treated Luan River by preozonation-UV＋chlorine disinfection technics.THMFP,HAAFP,formaldehyde,and bromate in effluent water were detected.The results showed that preozonation can reduce THMFP and HAAFP,the average removal rate were 22.76% and 22.38% separately;and it reached up to 46.23% and 55.38% after the whole processes.Though the concentration of formaldehyde increased after treated by pre-ozonation,it was significantly reduced in the following process.No bromate was detected in the effluent water.