【摘 要】
：
The cross-linked PVA/PVDF composite flat sheet membrane were successfully prepared phase inversion method.FeC13 particles were used as cross-linker.PVA is crosslinked during the membrane fabrication.T
【机 构】
：
School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology
论文部分内容阅读
The cross-linked PVA/PVDF composite flat sheet membrane were successfully prepared phase inversion method.FeC13 particles were used as cross-linker.PVA is crosslinked during the membrane fabrication.The strucutres of formed membranes were investigated using scanning electron microscopy and FT-IR,The hydrophilic contact angle,pure water flux and tensile strength were to assess the membrane performance.The anti-fouling performance of modified membrane for the secondary effluent of urban sewage was evaluated by flux decline,washing recovery rate,fouling resistance analysis and different hydrophilicity fractions distribution.FT-IR showed that the peak intensity attribuated to-OH groups decrease gradually with the increase of FeCl3,indicating the formation ofa PVA-Fe3+ net work structure.The addition of crosslinking agent FeCl3 confined the compaction of membrane,the fouling resistances of membranes were lower and the water flux was higher.When the weight ratio of PVA to FeC13 was 1/0.09,the modifed membranes had the best UF performance and antifouling property.
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