聚醚砜/醋酸纤维素共混膜的制备及其在膜生物反应器中的应用研究  

Preparation of PES/CA blending membrane and its application in membrane bioreactor

作　　者：邱恒[1] 汪永辉[1] 薛罡[1] 闵浩[1] 赵静[1] 刘亚男[1] 和金[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620

出　　处：《现代化工》2009年第9期57-60,共4页Modern Chemical Industry

基　　金：教育部新世纪优秀人才计划(NECT-07-0175);教育部科学技术研究重点项目(107046);上海市基础研究重点项目(08JC1400500);教育部博士点基金新教师项目(200802551001)

摘　　要：以聚醚砜(PES)和醋酸纤维素(CA)为膜材料,采用L-S相转化法制备共混膜。当PES质量分数18%、聚乙烯吡咯烷酮(PVP)质量分数12%、CA质量分数2.6%、蒸发时间30 s、凝固浴温度303 K、凝固时间1800 s时,在0.2 MPa压力条件下,所制备的改性膜的纯水通量为606.70 L/(m2.h),高出PES膜1倍,牛血清蛋白(BSA)截留率变化不大。膜生物反应器(MBR)中PES/CA膜出水水质优良,运行中PES/CA膜抗污染性能优于PES膜。The blending membrane is prepared by use of L-S phase inversion method with polyethersulfone （PES） and cellulose acetate （CA） as membrane materials. The experimental results show that with 18% of PES concentration, 12% of polyvinylpyrrolidone concentration, 2.6 % of CA concentration, 30 s of evaporation time, 303 K of coagulation bath temperature, 1 800 s of clotting time, and 0.2 MPa of pressure the pure water flux of modified membrane can reach 606.70 L/m^2· h, which two times the unmodified one, but with little changes in BSA rejection rate. The effluent treated by PES/CA membrane is good in water quality, and the anti-pollution performance of PES/CA membrane is also better than PES membrane.

关 键 词：聚醚砜 醋酸纤维素 共混膜 抗污染性 膜生物反应器 

分 类 号：TQ028.8[化学工程] X703[环境科学与工程—环境工程]