饮用水中卤乙酸和三卤甲烷的形成及影响因素研究  

STUDY ON THE EFFECT AND FORMATION OF TRIHALO-METHANES AND HALOACETIC ETHYL ACID IN DRINKING WATERS

作　　者：陈萍萍[1] 张建英[1] 金坚袁[1] 

机构地区：[1]浙江大学环境污染控制技术研究所,杭州310028

出　　处：《环境化学》2005年第4期434-437,共4页Environmental Chemistry

基　　金：浙江省科技计划项目(项目编号:2003C33040).

摘　　要：以浙江省钱塘江流域的七种水源水为代表,分析了前体物、pH值、投氯量、氯化时间和温度等因素对氯化消毒副产物(DBPs)中三种卤乙酸(HAAs)和三种三卤甲烷(THMs)的影响.研究表明,总有机碳(TOC)和UV-254与HAAs前体物呈正相关,而与THMs前体物的相关性较差;在pH5-10的范围内,pH值对HAAs的形成影响较小,pH值愈高HAAs总量愈小,而对THMs的形成影响较大,THMs总量随pH值的增高而增大;HAAs和THMs的形成量与投氯量、氯化时间均呈正相关;在正常气温条件下,随温度的增加而增加.THMs and HAAs, which are two types of disinfection by-products ( DBPs) , were studied in the water samples from Qiantang river in Zhejiang province. The results showed that haloacetic acids (HAAs) and trihalo- methane (THMs) are different with variable conditions of DBPs precursors, water temperature, applied chlorine dose, reaction time and pH. TOC and UV-254 had a high correlation with HAAs precursors, but low with THMs precursors. The total THMs concentration increases with increasing pH value in range of 5-10, but the total HAAs concentration slightly decreases with increasing pH value, the chlorine dose and reaction time have a functional relationship with the formation of HAAs and THMs, and the concentration of HAAs and THMs also increased with increasing temperature in the normal range.

关 键 词：三卤甲烷 卤乙酸 饮用水 总有机碳(TOC) 氯化消毒副产物 HAAs THMS 形成影响 钱塘江流域 pH值 前体物 气温条件 投氯量 正相关 水源水 浙江省 相关性 温度 时间 

分 类 号：R123.1[医药卫生—环境卫生学]