Operation Characteristics of Treating Surface Water with Polyvinylchloride Hollow Fiber Ultrafiltration Membrane

A pilot plant study on a polyvinylchloride hollow fiber ultrafiltration membrane process was conducted for treating surface water.The membrane system was operated in the dead-end filtration mode under different constant permeate fluxes.The results show that the optimized operation ( transmembrane pressure≤0.1 Mpa,filtration time≤30 min) with a hydraulic cleaning (30 s) and a chemical cleaning (30 min,the chemical cleaning was performed after 16 cycles of filtration ) en ures a quite steady flux (1 100 L/(m2·h · Mpa)) and good permeate quality (turbidity ＜0.1NTU ).A full-scale plant can be suggested to operate with a mixed strategy of constant permeate flux mode (transmembrane pressure ≤0.1 Mpa) and constant transmembrane pressure mode.When the temperature of raw water becomes below 5 ℃,a constant transmembrane pressure mode should be used; otherwise a constant permeate flux mode (transmembrane pressure ≤ 0.1 Mpa) can be operated.In this way,irreversible fouling of ultrafiltration membrane can be minimized to keep a stable flux and make the life of membrane longer.

作 者： GUO Xiaoyan ZHANG Zhenjia FANG Lin SU Liguo   作者單位： GUO Xiaoyan,FANG Lin,SU Liguo(College of Environmental Science and Engineering,Nankai University,Tianjin 300071,China)

ZHANG Zhenjia(College of Environmental Science and Engineering,Shanghai Jiaotong University,Shanghai 200240,China) 

刊 名： 天津大學學報（英文版）  EI 英文刊名： TRANSACTIONS OF TIANJIN UNIVERSITY  年，卷(期)： 2006 12(6)  分類號： O6  關鍵詞： drinking water treatment   hollow fiber membrane   surface water   ultrafiltration  

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