饮用水中含氮消毒副产物的生成特性及研究进展

Progress on the Formation of N-Disinfection By-Products in Drinking Water

指出了在饮用水消毒过程中,消毒剂与水中天然有机物反应会生成消毒副产物(DBPs),这些副产物对人体具有三致作用。近年来,含氮消毒副产物(N-DBPs)在饮用水中不断被检出,其出厂水浓度一般在ng/L~μg/L水平,但是其危害却远远高于THMs和HAAs等。鉴于含氮消毒副产物极强的三致性、生殖发育毒性和细胞毒性,综述了含氮消毒副产物的前体物种类、生成机制和控制方法等,并对在水处理过程中控制含氮消毒副产物的生成存在的问题和挑战进行了研究和展望。

Disinfectants would react with natural organic matters （NOM） during disinfection in drinking water and dis- infection by--products, which have a synergistic effect on the human body.In recent years, the concentration of ng/L μg/L levels of N--DBPs, whose toxicity was higher than THMs and HAAs, were detected in output water treated by different disinfectants.These substances pose highly threat to human beings. In view of the strong synergistic, re- productive and developmental toxicity and cytotoxicity of nitrogenous disinfection by--products,the precursors, for- mation mechanisms and control methods of N--DBPs are summarized. And the problems and challenges for N-- DBPs during water treatment is proposed in this study.