水平与垂直PES中空纤维超滤膜组件分离性能的研究

水平与垂直PES中空纤维超滤膜组件分离性能的研究

作者：Alsalhy;Qusay;Fadhel;许振良;杨晓天

作者机构：Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, P.R. China;Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, P.R. China;Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, P.R. China 来源：上海大学学报（英文版） ISSN：1007-6417 年：2006 卷：010 期：002 页码：173-178 页数：6 中图分类：X1 正文语种：chi

关键词：hollow fiber UF membrane;polyethersulfone;polyvinyl alcohol;horizontal module;vertical module

摘要：The effect of hollow fiber module positions (horizontal and vertical) on separation performance for PVA solution by using polyethersulfone (PES) hollow fiber ultrafiltration (UF) membrane with the molecular weight cut-off (MWCO) 30 000 has been discussed. Experimental results illustrated that the suitable operation conditions for PVA solution were as follows: trans-membrane pressure 2.1 bar, solution temperature 75 °C and feed velocity 0.32 m/s. Under these

suitable operation conditions, the permeate flux is from 36.8 L/(m2·h·bar) to 42.9 L/(m2·h·bar) for the horizontal module and from 39.8 L/(m2·h·bar) to 66.6 L/(m2·h·bar) for the vertical module. Besides, the separation performance of PES hollow fiber UF membrane was better by using vertical hollow fiber module than by using horizontal hollow fiber module. When the trans-membrane pressure increased from 1 bar to 2.1 bar, solution temperature from 50 °C to 75 °C, feed solution velocity from 0.16 m/s to 0.32 m/s, the PVA rejection would increase from 95.8% to 99.7%, 95.4% to 98.6%, 95.8% to 99.2% for horizontal module respectively, and from 98.8% to 99.8%, 98.6% to 99.4%, 98.5% to 99.4% for vertical module respectively. Therefore, PVA rejection in PES hollow fiber UF process was more than 98.5% for vertical module, and it is suitable for PVA recovery from wastewater.