电除盐装置膜组件清洗技术的研究及应用  

Research and Application of Counterflow Offline Cleaning Technology for EDI Modules

作　　者：降晓艳[1] 许臻[1] 翟绍晶 余耀宏[1] 杨永刚[1] 李亚娟[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032

出　　处：《中国电力》2016年第2期18-20,共3页Electric Power

摘　　要：近年来电除盐(EDI)技术在电厂水处理系统逐渐得到应用,EDI膜组件污堵及其清洗是该技术急需解决的问题。简要介绍EDI装置的工作原理及结构,分析了造成EDI装置污堵的主要原因,提出了相应的清洗方案,并开发出EDI膜组件离线清洗装置。应用结果表明:该装置能够实现逆流清洗,清洗效果优于传统清洗方式,采用离线清洗方式对膜组件进行化学清洗+逆流清洗,效果良好,清洗后的膜组件出力较清洗前提高60%以上。Recently, the electric demineralizer （EDI） technology has been gradually applied in the water treatment systems of power plants. It is becoming urgent to solve the issue of blockage and cleaning of EDI modules. This paper introduces the operation mechanism and infrastructure of EDI, analyzes the major cause contributing to deposit block, then puts forward corresponding design for cleaning and presents the development of an offline cleaning device for EDI modules. From the on-site application it is observed that by taking advantage of this device backwash cleaning can be conducted with better performance over the traditional cleaning. The offline chemical cleaning in combination with backwash cleaning achieves good effects. Specifically, the output of membrane modules is improved by over 60% after cleaning.

关 键 词：电除盐(EDI) EDI膜组件 污堵 清洗装置 逆流清洗 

分 类 号：TM621.8[电气工程—电力系统及自动化]