Fouling behavior of urban sewage on binary blend PVDF UF membrane

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• Affiliation of Author(s):化学与化工学院
• Journal:2012水资源与城市化发展大会（国际会议）论文集
• Key Words:中文关键字：聚偏氟乙烯；共混超滤膜；城市污水二级出水；抗污染，英文关键字：PVDF; blend UF membrane; secondary effluent of urb
• Abstract:PVDF ultrafiltration membranes were prepared by blending with PVA, PVP, PEG and PMMA through phase inversion via immersion precipitation method. Phase inversion progress of membranes was investigated though light transmittance experiment. Membrane components and morphologies were analyzed by FTIR and scanning electron microscope (SEM) and atomic force microscope (AFM), respectively Membrane performance was evaluated in terms of pure water permeation, BSA rejection, water contact angle (WCA), et al. The membrane fouling behavior was evaluated according to dynamic pollution resistance analysis, using secondary effluent of urban sewage as separation object. The results showed that UF membranes with high hydrophilicity, dense surface and through macropores in across-section had small sewage flux decline and low pollution during filtration, and the main fouling resistance was concentration polarization and cake layer resistance, membrane fouling was reversible. While the UF membranes with porous surface, no through membrane internal macropores, loose sponge-like structure were trend to produce pore plugging resistance, and membrane fouling was irreversible. The surface roughness had certain contribution to the anti-fouling performance of UF membranes.
• Note:孟晓荣
• Co-author:张海珍,黄丹曦
• First Author:wangxudong,wanglei,mengxiaorong
• Indexed by:Journal paper
• Volume:卷：
• Issue:期：
• Page Number:页：12-21
• Translation or Not:no
• Date of Publication:2012-09-01