中空纤维正渗透膜浓缩灰水过程中的膜污染和清洗初探  

Fouling and cleaning of hollow fiber forward osmosis membranes when concentrating grey water

作　　者：肖婷婷[1,2,3] 窦鹏佳 王艳强 李雪梅 何涛[1] 

机构地区：[1]中国科学院上海高等研究院膜材料与分离技术实验室,上海201210 [2]中国科学院大学,北京100049 [3]上海科技大学物质学院,上海201210 [4]华特迪士尼(中国)有限公司迪士尼中国研究,上海200031

出　　处：《膜科学与技术》2017年第5期21-27,共7页Membrane Science and Technology

基　　金：中科院"钍基熔盐系统"(XDA02020100);国家自然科学基金项目(U1507117;21676290);迪士尼研发资助项目(CA1501)

摘　　要：采用中空纤维复合正渗透膜处理灰水,考察了以灰水中不同成分为原料液的动态膜污染过程,并探究它们之间的相互作用,分析得出蛋白质是体系中的主要污染物,Ca2+和表面活性剂可以与其发生相互作用而加速污染,灰水体系的膜污染主要是由于各个组分相互间的作用造成的.此外,还通过渗透反洗的方法有效恢复膜通量到原来的95%.Membrane fouling when concentrating grey water has been investigated using a hollow fiber forward osmosis membrane.The contribution of the pollutants to membrane fouling was systematically analyzed.The interactions between different pollutants were also studied.Proteins were found to be most important foulant.Cleaning strategies were compared,and it was found that the membrane flux could be recovered to 95% of the original value by means of osmotic backwash.

关 键 词：正渗透 灰水 膜污染 渗透反洗 

分 类 号：TQ028.8[化学工程]