电去离子运行过程中的结垢问题及其防止措施  

SCALING PROBLEM AND PREVENTING MEASURES OF ELECTRODEIONIZATION PROCESS

作　　者：王斌斌[1] 周志军[1] 江增 

机构地区：[1]浙江大学化学工程与生物工程学系,浙江杭州310027

出　　处：《水处理技术》2010年第9期120-123,共4页Technology of Water Treatment

基　　金：国家水体污染控制与治理重大科技专项经费资助(2008ZX07425-008);浙江省科技计划项目资助(2008C33006)

摘　　要：在简要介绍电去离子(EDI)基本原理及其应用的基础上,提出了膜堆结垢是EDI应用过程中的主要问题,分析了膜堆结垢的原因及其预防措施,认为有效防止膜堆结垢的关键因素:控制EDI的进水硬度、CO2浓度等合理的预处理工艺;通过极水室和浓水室中填充离子交换树脂降低膜堆电阻的结构设计。In this paper,the basic principle of EDI process and its application were introduced.Its main application obstacle was membrane stack scaling.The reason of stack scaling and preventive measures were discussed.To effectively prevent scaling,there were two key factors： one was to find a reasonable EDI water pretreatment which could control the concentration of hardness and CO2 in EDI influent water;the other was to improve EDI module structure where ion-exchange resin was filled in the concentrated water chamber and electrode rinse chamber to reduce membrane stack resistance.

关 键 词：电去离子 膜堆 结垢 超纯水 

分 类 号：TQ028.8[化学工程]