大通量PVDF超滤膜在饮用水净化中的应用研究  

Application of High Flux PVDF Ultrafiltration Membrane in Drinking Water Purification

作　　者：田野 金韶华[1] 金宇涛 林亚凯 张岩岗 李丽洁[1] TIAN Ye;JIN Shaohua;JIN Yutao;LIN Yakai;ZHANG Yangang;LI Lijie(School of Material Science and Engineering,Beijing Institute of Technology,100081;Beijing Scinor Membrane Technology Co.Ltd.,100083;Beijing Key Laboratory of Membrane Materials and Engineering,Department of Chemical Engineering,Tsinghua University,100084;Beijing Scinor Water Technology Co.Ltd.,100083:Beijing,China)

机构地区：[1]北京理工大学材料学院,100081 [2]北京赛诺膜技术有限公司,北京100083 [3]清华大学化学工程系膜材料与工程北京市重点实验室,北京100084 [4]北京赛诺水务科技有限公司,北京100083

出　　处：《水处理技术》2022年第2期129-133,共5页Technology of Water Treatment

摘　　要：本文利用热致相分离法制备的新型大通量聚偏氟乙烯(PVDF)中空纤维膜在美国得克萨斯州圣帕特里西奥自来水厂进行了饮用水净化应用研究。研究结果表明,得益于新型TIPS法PVDF膜的高通透性与易清洗性,中试膜组件能够保持110 L/(m·h)的高通量下稳定运行,比该自来水厂原设计的运行通量高约20%。此外,新型TIPS法PVDF膜的产水水质稳定可靠,浊度始终小于0.05 NTU,且对与隐孢子虫大小类似的细菌有很好的去除效果,对数去除值大于4 log,产水水质完全满足美国当地的饮用水水质标准。In this paper,a novel PVDF hollow fiber membrane prepared by the thermally induced phase separation(TIPS)method was used in the San Patricio Waterworks in Texas,USA.The results showed that the pilot membrane module can maintain a high flux of 110 L/(m·h)(65 GFD)due to the high permeability and easy cleaning of the new-type PVDF membrane,which is about 20%higher than the design of the waterworks.In addition,the quality of the produced water treated by the new-type PVDF membrane is stable and reliable.The turbidity is always less than 0.05 NTU with the excellent removal effect of bacteria which is similar to the size of Cryptosporidium.And the log removal value(LRV)is greater than 4 log,which fully meets the local drinking water quality standards in the USA.

关 键 词：热致相分离法 大通量PVDF超滤膜 饮用水净化 细菌去除率 

分 类 号：TQ028.8[化学工程]