流量对电絮凝连续处理微污染水的影响  

Research for Impact of Discharge on Continuously Treating Micro-polluted Water by Electrocoagulation

作　　者：焦跃腾 顾正华[1] 辜樵亚 盛娇樱 高柱 JIAO Yueteng;GU Zhenghua;GU Qiaoya;SHENG Jiaoying;GAO Zhu(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;School of Transportation and Civil Engineering,Nantong University,Nantong 226019,China)

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058 [2]南通大学交通与土木工程学院,江苏南通226019

出　　处：《人民珠江》2021年第3期61-69,共9页Pearl River

基　　金：国家重点研发计划(2018YFC1508104-3);浙江省自然科学基金(LY20D010009);江苏省“六大人才高峰”项目(JNHB-208);南通市第五期“226工程”科研项目。

摘　　要：对雨水等微污染水进行净化利用是解决水资源短缺问题的一条有效途径。电絮凝作为一种具有广泛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。与分批处理相比,连续电化学处理更简单快捷,处理量大,且无需人为值守。通过河水处理试验,讨论流量的改变对电絮凝处理效果的影响,结果表明流量对电絮凝连续处理微污染水的效果具有明显的影响,存在一个较佳流量,但规律并不显著。试验中在电流密度为14.79 A/m^(2)、极板间距1.5 cm条件下,该流量约为2.0 mL/s,此时反应3 h后,色度去除率为48.88%,浊度去除率为73.17%,悬浮固体去除率为58.06%,化学需氧量去除率为35.00%,总磷去除率51.22%;处理后溶液pH值稍有提高,电导率有所下降。可见运用电絮凝处理技术连续净化微污染水具有一定的可行性。Purification and utilization of micro-polluted water like rainwater will be an effective way to solve the problems of water shortage.As a low-cost,high-efficiency wastewater treatment technology with a wide range of prospects,electrocoagulation has been proved to have a significant effect in treatment of heavily polluted wastewater such as industrial wastewater and domestic sewage.However,there are currently few studies on purification of micro-polluted water by electrocoagulation.Compared with batch treatment,continuous electrochemical treatment is simpler and faster,and large in treatment capacity,without human intervention.This paper discusses the impact of discharge on the continuous treatment results by electrocoagulation based on the experimental investigation of electrocoagulation test of river water.The results show that the discharge has a significant impact on the continuous treatment of micro-polluted water by electrocoagulation.There is a suitable discharge value,but the law is not obvious.Under the condition of the current density of 14.79 A/m^(2),and the plate distance of 1.5 cm,the discharge is about 2.0 mL/s,and after 3-hours reaction,the chroma removal rate of polluted water is 48.88%,the turbidity removal rate is 73.17%,the removal rate of suspended solids is 58.06%,the removal rate of COD is 35.00%,and the removal rate of total phosphorus is 51.22%.Furthermore,the pH of treated water rises slightly,and its conductivity decreases a little.Therefore,it is feasible to continuously purify micro-polluted water by electrocoagulation.

关 键 词：电絮凝 微污染水处理 流量 雨洪利用 海绵城市 

分 类 号：X52[环境科学与工程—环境工程]