饮用水预处理去除备用水源三卤甲烷生成潜能  

Removal of Regulated Disinfection By-products Trihalomethanes Formation Potential(THMFP) from Backup Water Source by Drinking Water Pretreatment

作　　者：徐正阳[1] 高乃云[2] 王万江[1] 陈义春 朱永林 吴和生 吴徐 

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830000 [2]同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海200092 [3]镇江自来水公司,江苏镇江212002

出　　处：《四川环境》2014年第3期6-13,共8页Sichuan Environment

基　　金：国家科技重大专项基金资助项目(2012ZX07403-001);国家自然基金资助项目(51178321);住房和城乡建设部研究开发项目(2009-K7-4)

摘　　要：针对镇江金山湖备用水源,考察混凝、预氧化、预氯化、粉末活性炭吸附以及与预氧/氯化联用工艺对天然原水三卤甲烷生成潜能(THMFP)和UV254的去除效果。结果表明,3种无机盐混凝剂中三氯化铁去除效果最好,且去除效果随投加量增大而提高;高锰酸钾预氧化在低投加量时可取得良好效果,增大投加量去除率降低;次氯酸钠预氯化会产生大量THMs,不宜单独使用;粉末活性炭吸附去除效果分别随时间和投加量增加而增大;预氧/氯化与粉末活性炭联用工艺去除率最高(60%),且活性炭吸附可大大减少预氯化产生的THMs。The removal efficiency of trihalomethanes formation potential（THMFP） and UV254by coagulation,pre-oxidation,pre-chlorination,powdered activated carbon adsorption and combined process of pre-oxidation /pre-chlorination and powdered activated carbon of Jinshan Lake,backup water resource in Zhenjiang was investigated.The result indicates that ferric chloride has the best removal efficiency among three inorganic coagulants,and the removal efficiency improves with increasing coagulant dosage.The best removal efficiency of THMFP occurs at a low dosage level of potassium permanganate pre-oxidation while high dosage of potassium permanganate pre-oxidation decreases removal efficiency.Chlorination of sodium hypochlorite would produce large quantity of THMs,so it is not suggest to use pre-chlorination alone.The removal efficiency of powdered activated carbon adsorption improves with increasing time and dosage.Combined process of pre-oxidation /pre-chlorination and powdered activated carbon has the highest removal efficiency which is 60%,and activated carbon adsorption could largely reduce the THMs generated by pre-chlorination.

关 键 词：三卤甲烷生成潜能 天然原水 混凝 预氧化 预氯化 粉末活性炭 

分 类 号：X703[环境科学与工程—环境工程]