地下水砷污染及其治理技术  

Technology of Arsenic Removal from Groundwater Treatment

作　　者：李远[1] 徐洪斌[1] 刘卓[2] 

机构地区：[1]郑州大学水利与环境学院,河南郑州450001 [2]南京大学盐城环保技术与工程研究院,江苏盐城224000

出　　处：《环境科学导刊》2017年第A01期61-63,共3页Environmental Science Survey

摘　　要：针对目前我国国内地下水砷污染问题,介绍了国内地下水砷污染的来源、分布,并对含砷地下水的处理方法进行了比较。其中混凝沉淀法及吸附法应用广泛、工艺简单,但对三价砷处理效果不好,含砷地下水必须经过预氧化后才能进入处理单元。离子交换法及膜分离法处理效率高,但运行费用高,操作复杂,在含砷地下水处理中应用较少。生物法是新兴的含砷地下水处理方法,工艺简单,成本低,无二次污染,但目前工艺并不成熟。Based on the serious situation of arsenic contamination in groundwater, the sources and distribution of arsenic contamination were introduced as well as the groundwater treatment methods of arsenic removal. Although coagulating sedimentation and adsorption were widely used, their removal efficiency for trivalent arsenic was unsat- isfactory. Therefore, groundwater with arsenic must be pre - oxidized before entering the processing unit. Ion - ex- change and membrane separation had high efficiency. However, their high operating costs and complex operations make them seldom used. Biological method was a new and immature arsenic treatment method at present with sim- ple process, low cost, and no secondary pollution.

关 键 词：地下水 砷污染 处理方法 

分 类 号：X703[环境科学与工程—环境工程]