板间距对电絮凝处理微污染水的影响  

Research on influence of different electrode distances on treating slightly polluted water by electrocoagulation

作　　者：焦跃腾 顾正华[1] 丁昊 周欣 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058

出　　处：《人民长江》2017年第21期23-28,共6页Yangtze River

基　　金："十三五"国家重点研发计划项目(2016YFC0401503;2016YFC0401507);国家自然科学基金资助项目(51579216);水利部公益性行业科研专项经费项目(201501007)

摘　　要：电絮凝作为一种具有广泛应用前景的低廉高效污水处理技术,已经被证明在工业废水、生活污水等污染严重的水体处理上具有显著效果,但是目前对于电絮凝净化微污染水的相关研究较少。通过对电絮凝分批处理河水的实验研究,分析电絮凝方法处理微污染水的可行性,讨论极板间距的改变对电絮凝处理效果的影响。结果表明,电絮凝处理技术可以用于微污染水净化中,在电流密度为17.75 A/m2、极板间距为1.5 cm的条件下,反应30 min时,色度去除率为73.76%,浊度去除率为76.00%,悬浮固体去除率为85.71%,化学需氧量去除率为42.86%,总磷去除率为61.36%。在电絮凝反应中,极板间距对于微污染水的色度、浊度、悬浮固体和总磷去除效果具有明显的影响。As a low cost, high efficiency and broad perspective technology, electrocoagulation has been proved notable in the treatment of severely polluted industry water, domestic sewage etc. ,but the research for the treatment of slightly polluted water was less. Through test study on river waters that were in batch treatment by electrocoagulation, this paper analyzes the feasibility of slightly polluted water by eleetroeoagulation and discusses the influence of electrode distance change on the treatment effect. The results show that the eleetrocoagulation treatment technology can be used in the purification of slightly polluted water; under the current density of 17.75 A/m^2, the electrode distance of 1.5 cm and 30 min of reaction time, the chrominanee removal rate of polluted water is 73.76% , the removal rate of turbidity is 76% , the removal rate of suspended solids is 85.71% , the removal rate of COD is 42.86% , and the total phosphorus removal rate is 61.36%. In the electroeoagulation treatment, the distance be- tween the electrodes has a significant effect on the color, turbidity, suspended solids and total phosphorus removal efficiency of micro - polluted water.

关 键 词：电絮凝 微污染水处理 极板间距 雨洪利用 海绵城市 

分 类 号：X171[环境科学与工程—环境科学]