共存离子对饮用水中5种卤乙酸生成的影响  

Effects of Coexisting Ions on the Formation of Five Haloacetic Acids in Drinking Water

作　　者：王俊霞 塔娜[1] WANG Junxia;TA Na(Inner Mongolia Key Laboratory of Environmental Chemistry,College of Chemistry and Environmental Science,Inner Mongolia Normal University,Hohhot 010022,China)

机构地区：[1]内蒙古师范大学化学与环境科学学院,内蒙古环境化学重点实验室,内蒙古呼和浩特010022

出　　处：《水处理技术》2020年第2期73-78,共6页Technology of Water Treatment

基　　金：国家自然科学基金(21667022);内蒙古自治区水环境安全协同创新培育中心(XTCX003)。

摘　　要：以腐殖酸作为天然水体中消毒副产物(DBPs)前体物,模拟了饮用水消毒过程。研究了水体中共存金属离子Ca2+、Mg2+、Cu2+、Al3+、Zn2+、Fe3+、Fe2+和非金属离子NH4+、As3+、F-等对饮用水氯消毒过程中5种卤乙酸(HAAs)包括一氯乙酸(MCAA)、一溴乙酸(MBAA),二氯乙酸(DCAA),三氯乙酸(TCAA)、二溴乙酸(DBAA)和总HAAs生成量的影响。结果表明,以上离子对5种HAAs和总HAAs生成量和含量分布均产生影响,但影响程度有所不同。除了水中F-在研究含量范围内对HAAs的生成影响不明显以外,Ca2+、Mg2+、Cu2+、NH4+、As3+等离子对HAAs总体上产生抑制作用,而Al3+、Zn2+、Fe3+、Fe2+等离子对HAAs的生成总体有促进作用。The disinfection process of drinking water was simulated,and the humic acid as the precursors of disinfection by-products(DBPs) in natural water.The effect of coexisting metal ions(Ca2+,Mg2+,Cu2+,Al3+,Zn2+,Fe3+,Fe2+) and non-metal ions(NH4+,As3+,F-) on production of 5 kinds of haloacetic acid(HAAs) and total HAAs was studied.5 kinds of HAAs were Monochloroacetic acid(MCAA),Monobromoacetic acid(MBAA),Dichloroacetic acid(DCAA),Trichloroacetic acid(TCAA),Dibromoacetic acid(DBAA).The results showed that,the ions above mentioned had different effect on the production and content distribution of 5 kinds of HAAs and total HAAs.At the range of content studied,except that coexistent F-was no obvious influence on HAAs production,however,other ions such as Ca2+,Mg2+,Cu2+,NH4+,As3+inhibited the formation of HAAs,while Al3+,Zn2+,Fe3+and Fe2+increased the formation of HAAs.

关 键 词：卤乙酸 饮用水 消毒副产物 氯消毒 共存离子 

分 类 号：TU991.25[建筑科学—市政工程]