Al/C/Fe复合电极电絮凝法同时除氟除砷(Ⅴ)  

Simultaneous removal of fluoride and arsenic( Ⅴ) via Al /C /Fe combination electro-coagulation process

作　　者：齐学谦[1] 李泽唐[1] 周雅芳[2] 张旭[1] 

机构地区：[1]清华大学环境学院,北京100084 [2]铁岭天信公用事业股份有限公司,铁岭112000

出　　处：《环境工程学报》2014年第2期525-530,共6页Chinese Journal of Environmental Engineering

基　　金：国家"水体污染控制与治理"科技重大专项(2009ZX07425-006);环保公益性行业科研专项(201009009-003)

摘　　要：为了同时去除地下水中的氟和砷,提出了Al/C/Fe复合电极电絮凝法和Al/C-Fe/C依次除氟砷法,并进行效果对比。研究了Al/C/Fe复合电极电絮凝法的影响因素,并对复合电极电絮凝产生的絮体进行了SEM-EDX分析。结果表明,Al/C/Fe复合电极电絮凝法对氟、砷的去除速率分别是Al/C-Fe/C依次除氟砷法的1.43倍和4.73倍;初始氟/砷浓度为4.0/1.0、4.0/0和0/1.0 mg/L 3种条件下,通过铝极板、铁极板的电流密度均为0.10 mA/cm2时,达到最好的除氟除砷效果,与初始氟/砷浓度无关。In order to remove F- and As（ V ）ions from groundwater simultaneously, a system of Al/C/Fe combination electro-coagulation and a system of Al/C-Fe/C used in sequence were designed. Influencing factors of Al/C/Fe combination electro-coagulation were researched, and flocs produced in the combination electro-co- agulation were analyzed by SEM-EDX. The results showed that theAl/C/Fe combination system＇ s removal rates of F- and As（ V ） ions are 1.43 times and 4.73 times of that of the system of Al/C-Fe/C used in sequence. When the current density of Al and Fe electrode is 0. 10 mA/cm2, the removal of F - and As（ V ） ions is the best when the initial F/As（ V ） concentrations are 4.0/1.0 mg/L,4.0//0 mg/L and 0/1.0 mg/L, so the best value of current density has no dependence on the initial F/As（ V ） concentration.

关 键 词：地下水 Al C Fe复合电极 电絮凝 同时除氟除砷 

分 类 号：X703[环境科学与工程—环境工程]