Al／C／Fe复合电极电絮凝法同时除氟除砷（V）

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0／1．0mg／L3种条件下，通过铝极板、铁极板的电流密度均为0．10mA／cm2时，达到最好的除氟除砷效果，与初始氟／砷浓度无关。

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

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.