摘要
对西安市曲江、南郊两个地表水厂水处理工艺过程中三卤甲烷类消毒副产物的变化规律进行了研究,同时对水处理工艺过程中三卤甲烷前体物进行了分析。试验结果表明:西安市饮用水中三卤甲烷类消毒副产物主要组分为三氯甲烷和二氯一溴甲烷;三卤甲烷总量约为10μg/L,远低于国家《城市供水水质标准》的要求;预加氯在水处理工艺中对三卤甲烷类消毒副产物生成量贡献较大,约占总量的35%～60%;混凝、沉淀、过滤对三卤甲烷前体物约有35%～42%的去除效果,但对三卤甲烷基本无去除效果。
This paper studies the variation laws of chlorination disinfection by-products （THMs） in two surface water treatment plants in Xi＇an City, and analyzes the THMs precursor in the water treatment technological process. The results show that in Xi＇an＇s drinking water, the main components of THMs are CHCI3 and CHC12Br. The concentration of THMs is 10μg/L that is much lower than Chinese Water Quality Standard of City Water Supply; the prechlorination is the main reason of the THMs formation in water treatment, making up about 30%-40% of the total THMs; about 35%-42% of the THMs precursor can be removed through the coagulation, precipitation and filtration, but the THMs can＇t be removed basically.
出处
《科技情报开发与经济》
2009年第18期151-154,175,共5页
Sci-Tech Information Development & Economy
基金
陕西省自然科学基金项目(2002E214)
北京市水质科学与水环境恢复工程重点实验室开放课题的研究成果之一
