Algal blooms and wastewater effluents can introduce algal organic matter(AOM)and ef-fluent organic matter(EfOM)into surface waters,respectively.In this study,the impact of bromide and iodide on the formation of halogenated disinfection byproducts(DBPs)during chlorination and chloramination from various types of dissolved organic matter(DOM,e.g.,natural organic matter(NOM),AOM,and EfOM)were investigated based on the data collected from literature.In general,higher formation of trihalomethanes(THMs)and haloacetic acids(HAAs)was observed in NOM than AOM and EfOM,indicating high reactivi-ties of phenolic moieties with both chlorine and monochloramine.The formation of haloac-etaldehydes(HALs),haloacetonitriles(HANs)and haloacetamides(HAMs)was much lower than THMs and HAAs.Increasing initial bromide concentrations increased the formation of THMs,HAAs,HANs,and HAMs,but not HALs.Bromine substitution factor(BSF)values of DBPs formed in chlorination decreased as specific ultraviolet absorbance(SUVA)increased.AOM favored the formation of iodinated THMs(I-THMs)during chloramination using pre-formed chloramines and chllorination-chloramination processes.Increasing prechlorina-tion time can reduce the I-THM concentrations because of the conversion of iodide to iodate,but this increased the formation of chlorinated and brominated DBPs.In an analogous way,iodine substitution factor(ISF)values of I-THMs formed in chloramination decreased as SUVA values of DOM increased.Compared to chlorination,the formation of noniodinated DBPs is low in chloramination.

Key Laboratory of Drinking Water Science and Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;University of Chinese Academy of Sciences,Beijing 100049,China;Water Conservancy Development Research Center,Taihu Basin Authority,Ministry of Water Resources,Shanghai 200433,China;Department of Crop Sciences,and the Safe Global Water Institute,University of Illinois at Urbana-Champaign,Urbana,IL 61801,USA;Department of Environmental Engineering and Earth Sciences,Clemson University,Anderson,SC 29625,USA

[1]Yunsi Liu;Keqiang Liu;Michael J.Plewa;Tanju Karanfil;Chao Liu-.Formation of regulated and unregulated disinfection byproducts during chlorination and chloramination:Roles of dissolved organic matter type,bromide,and iodide)[J].环境科学学报（英文版）,2022(07):151-160

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