三种金属阳极电絮凝法除磷效果对比实验研究  

Comparative Study on Phosphorus Removal Effect of Three Metal Anodes in Electrocoagulation

作　　者：陈鹏 李俊峰[1] 王健康[1] 曲文颖 谷天天 陈翠忠 CHEN Peng;LI Junfeng;WANG Jiankang;QU Wenying;GU Tiantian;CHEN Cuizhong(School of Water conservancy and Architectural Engineering,Shihezi University,832000;Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan,School of Chemistry and Chemical Engineering,Shihezi University,832003:Shihezi,China)

机构地区：[1]石河子大学水利建筑工程学院,832003 [2]石河子大学化学化工学院新疆兵团绿色化工过程重点试验室,新疆石河子832000

出　　处：《水处理技术》2022年第8期44-47,53,共5页Technology of Water Treatment

基　　金：石河子大学青年骨干专项资助计划(RCZK202002,RCZK202024);石河子大学青年创新培育人才项目(CXPY202010)。

摘　　要：水体中存在过量的磷元素会造成水体富营养化等环境问题,采用镁、铝和铁作为电絮凝法中的阳极对模拟废水中总磷进行去除,分别考察电流密度和溶液初始pH对总磷去除效果的影响。结果表明:镁阳极、铝阳极和铁阳极的最佳电流密度依次为15、20、15 mA/cm^(2),三种金属阳极最佳的初始pH均为7,电解60 min后总磷的去除率依次为99.80%、99.78%和99.56%。溶液中总磷的去除过程符合一级反应动力学方程,同时各电极在最佳反应条件下在实际废水中的去除效果依次为98.0%、97.7%和68.6%。絮凝体分析结果表明镁阳极和铝阳极产生的絮凝体结构稳定相对于铁阳极能够更好的去除废水中的总磷。Excess phosphorus that in the water will cause environmental problems such as eutrophication of the water.Magnesium,aluminum and iron are used as the anode in the electro-flocculation method to remove the total phosphorus in the simulated wastewater,and the current density and the initial pH value of the solution are respectively investigated.The result:the optimal current density of magnesium anode,aluminum anode and iron anode are 15,20,15 mA/cm,respectively.The best initial pH value of the three metal anodes is 7.The removal rate of total phosphorus after 60 min of electrolysis was 99.80%,99.78%and 99.56%,respectively.The removal process of total phosphorus in the solution conforms to the first-order reaction kinetic equation,simultaneously the removal effect of each electrode in the actual wastewater under the optimal reaction conditions was 98.0%,97.7%and 68.6%,respectively.The floc analysis results show that the structure of the flocs produced by the magnesium anode and the aluminum anode is stable and can remove the total phosphorus in the wastewater better than the iron anode.

关 键 词：电絮凝 总磷 三种金属阳极 pH 电流密度 

分 类 号：TQ314.253[化学工程—高聚物工业]