电絮凝-电气浮技术除藻过程中各参数的优化  

Optimization of parameters in the electrocoagulation-electroflotation process for removing algae

作　　者：高珊珊[1] 张辉[1] 杨建宇[1] 杜茂安[1] 涂刚[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090

出　　处：《工业水处理》2010年第12期58-60,61,共4页Industrial Water Treatment

基　　金：国家重大水专项(2008ZX07211-007)

摘　　要：水体富营养化导致的蓝藻水华已成为我国目前亟待解决的环境问题。试验选取铜绿微囊藻作为目标藻种,采用电絮凝-电气浮技术对高浓度含藻水进行处理。利用正交试验考察了电流密度、通电时间、pH、静置时间、电极间距对电絮凝-电气浮除藻效果的影响。试验结果表明,各因素对除藻效果影响的顺序为:通电时间>电流密度>pH>静置时间>电极间距。此外,溶液中存在的氯离子在电解条件下可生成活性氯,有助于藻细胞的去除。The increasing eutrophication has led to the occurrence of algae blooms, which is an urgent environment problem in China. Microcystis aeruginosa is used as target algae. The highly concentrated alga-containing wastewater is treated by electrocoagulation-electroflotation technique. The effects of current density, electrolysis time, initial pH, setting time and electrode gap on algae removal efficiency are investigated by means of orthogonal test. The results show that the sequences of influential factors which affect the algae removal efficiency are as follows： electrolysis time〉current density〉pH〉setting time〉electrode gap. In addition, when Cl^- are present in the ECF, algae removal could be enhanced by generated active chlorine.

关 键 词：电絮凝 电气浮 铜绿微囊藻 

分 类 号：X524[环境科学与工程—环境工程]