以北京田村山净水厂原水和炭后出水作为试验用水,对新型消毒剂单过硫酸氢钾复合粉消毒后生成的消毒副产物(disinfection by-products,DBPs)进行定性分析.向受试水样中分别投加单过硫酸氢钾复合粉和次氯酸钠,比较了复合粉消毒和氯消毒的DBPs生成量,并通过umu试验对水样消毒后的遗传毒性变化进行测试.结果表明,测试水样投加单过硫酸氢钾复合粉消毒前后的有机物种类变化不大,但仍有新的卤代烃和卤代物生成.与氯消毒相比,单过硫酸氢钾复合粉消毒后生成的三卤甲烷(THMs)和卤乙酸(HAAs)的含量更低.另外,根据umu测试的结果,经单过硫酸氢钾复合粉消毒后原水和炭后水的遗传毒性均明显低于氯消毒.然而在水中有机物较多和消毒剂投加量较大时,单过硫酸氢钾复合粉用于消毒仍有一定安全风险. The disinfection by-products (DBPs) produced by the disinfection of the new disinfectant monopersulfate-potassium composite powder were qualitatively analyzed with the raw water from the Tiancun Mountain water purification plant in Beijing and the effluent from the charcoal after the test. The samples were dosed with potassium monopersulfate compound powder and sodium hypochlorite, compounded composite powder disinfection and chlorine disinfection of DBPs generation, and through the umu test on the genotoxicity changes after disinfection of water samples were tested.The results showed that the test water samples Compared with the chlorine disinfection, compared with the chlorine disinfection, the monohalogenated potassium composite powder produced after the disinfection of trihalide (THMs) and haloacetic acids (HAAs) .In addition, according to the result of umu test, the genotoxicity of raw water and charcoal water after disinfection by monosulfate-potassium composite powder was significantly lower than that of chlorine disinfection When there is more organic matter in the water and the dosage of disinfectant is larger, there is still a certain safety risk that the potassium monopersulfate compound powder is used for disinfection.