三维电极电化学技术及其在废水处理中的应用

Three-dimensional electrode electrochemical technology and its application in wastewater

针对三维电催化氧化工艺的应用及进展进行了综述。介绍了三维电催化氧化技术的概念,并且以废水中氨氮污染物的处理探究了该技术的降解机理;简要概括了三维电催化氧化技术的影响因素,如电池电压和电流密度、初始pH、温度等;阐述了三维电催化氧化的典型电极材料,主要是通过构建中间层及涂层多元化改性的DSA电极、改性的掺硼金刚石电极、传统粒子电极和近年来研究热门的负载型粒子电极;分别总结了三维电催化氧化技术在氨氮废水、苯酚废水及印染废水处理方面的应用现状,提出了三维电催化氧化技术目前存在的问题并且对该技术今后的发展方向做出了展望。

This paper presents a review of the application and progress of three-dimensional electrocatalytic oxidation process.The concept of three-dimensional electrocatalytic oxidation technology was introduced,and the mechanism of degradation of this technology was studied with treatment of ammonia nitrogen pollutants in wastewater.A brief overview of the factors influencing the 3D electrocatalytic oxidation technology,such as cell voltage and current density,initial pH,temperature,etc.Typical electrode materials for three-dimensional electrocatalytic oxidation are described,mainly including DSA electrodes modified by constructing intermediate layers and coating diversification,modified boron-doped diamond electrodes,conventional particle electrodes and loaded particle electrodes,which have been popularly studied in recent years.The current status of application of 3D electrocatalytic oxidation technology in the treatment of ammonia nitrogen wastewater,phenol wastewater and printing and dyeing wastewater is summarized,and finally the current problems of 3D electrocatalytic oxidation technology are presented and the future development direction of this technology is prospected.