Effects of Br−on NDMA Formation During Chloramination:a Review of Influencing Factors,Mechanisms,and Control  

作　　者：XIA Ruanjunjie LIAO Xiaobin LIU Tianze GAO Menglan CHEN Chao 

机构地区：[1]Institute of Municipal and Environmental Engineering,College of Civil Engineering,Huaqiao University,Xiamen,361021,P.R.China [2]State Key Joint Laboratory of Environment Simulation and Pollution Control,School of Environment,Tsinghua University,Beijing,100084,P.R.China

出　　处：《Chemical Research in Chinese Universities》2023年第3期370-377,共8页高等学校化学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51878301).

摘　　要：For the invasion of seawater and the stress of human activities,bromide ion(Br−)exists widely in drinking water sources,and it was found to influence the formation of non-brominated but carcinogenic nitrogen-containing disinfection by-product nitroso-dimethylamine(NDMA)during chloramination(NH2Cl).The presence of Br−leads to the formation of bromine-active species,such as bromamines(NH2Br),bromochloramine(NHClBr),as well as hypobromous acid(HOBr),which are more reactive with NDMA precursors than chlorine-active species,so might promote NDMA generation.This review mainly focuses on the influencing laws,as well as the factors(disinfection conditions and characteristics of water matrixes)that affected NMDA formation during chloramination with Br−.In addition,the possible influencing pathways are discussed.Finally,based on the above summary,measures pertaining to reduce the impact of Br−on NDMA production are concluded.This review would provide a theoretical reference for drinking water treatment plants to deal with bromine-containing water during chloramination.

关 键 词：Bromide ion Disinfection by-product Nitrosodimethylamine(NDMA) CHLORAMINATION 

分 类 号：O6[理学—化学]