UF-EDI集成膜过程制备初级纯水  

PRIMARY PURE WATER PREPARATION BY THE UF-ED INTEGRATED MEMBRANE PROCESS

作　　者：王建友[1] 王世昌[2] 傅学起[1] 

机构地区：[1]南开大学环境科学与工程学院,天津300071 [2]天津大学化学工程研究所,天津300072

出　　处：《水处理技术》2006年第9期48-51,共4页Technology of Water Treatment

摘　　要：以超滤-电去离子(UF-EDI)集成膜过程对城市自来水的初级除盐制备纯水进行了研究。通过对过程特征曲线的研究表明,UF-EDI的过程工况介于传统ED过程,以及低原水含盐量条件下用以深度除盐的EDI过程之间。原水电导率为580～700μS/cm,pH6.0时,膜对电压为2.5～3.0V,产品水电导率可达2.4～8.8μS/cm,脱盐率为99%,过程稳定。与反渗透(RO)技术相比,UF-EDI工艺在过程能耗、水利用率、投资费用方面具有优势,有望发展成为低成本低能耗的高效初级纯水制备技术。Primary desalination of the tap water was studied with the UF-EDI integrated membrane process. From the “Voltage-Current” and “ pH-Voltage” characteristic curves, the operation status of the UF-EDI is similar to that of the conventional electrodialysis when operating at lower voltage, meanwhile to that of the usual electrodeionization process for deeply desalination when operating at higher voltage. With the feed conductivity of 580～700μS/cm and pH of6.0, the EDI can produce pure water steadily with the conductivity of2.4～8.μS/cm, which gives a rejection of 99% at applied voltage of 2.5～3.0V per cell pair. Compared to reverse osmosis, the UF-EDI has advantages such as lower energy consumption, water saving and lower cost, therefore it is hopeful to be a new technology and better choice for primary pure water preparation.

关 键 词：电去离子 填充床电渗析 超滤 脱盐 

分 类 号：TQ028.8[化学工程]