不同运行条件对超滤膜通量阻力的影响研究  

Influence of Different Operating Conditions on Flux Resistance of Ultrafiltration Membrane

作　　者：裴亮[1] PEI Liang(Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)

机构地区：[1]中国科学院地理科学与资源研究所陆地水循环及地表过程院重点实验室,北京100101

出　　处：《过滤与分离》2017年第4期6-9,共4页Journal of Filtration & Separation

基　　金：国家高技术研究发展计划(2011AA100507);国家自然科学基金青年基金(41471229和51109197);国家科技支撑计划课题(2012BAD08B02和2013BAC02B02)

摘　　要：在分析膜污染和膜通量阻力的基础上,在不同条件下,研究对超滤膜分离处理生活污水过程中,通量阻力的变化规律。得出结论:在水回收率同样情况下,水压对膜通量有显著的影响,运行初期较高的水压使得膜表面物理污染增加较快,后期部分通量阻力被高水压抵消一部分,使得膜过滤效率增加;水回收率在70%左右能够使通量阻力维持在低水平;定期反冲洗可以降低通量阻力。Based on the analysis of membrane fouling and flux resistance, the variation law of flux resistance in the process of separation and treatment of domestic sewage by ultrafiltration membrane was studied under different conditions. It was concluded that under the same water recovery rate, the water pressure had a significant influence on the membrane flux. At the beginning of operation, the higher water pressure made the physical pollution of the membrane surface increase faster, and part of the flux resistance was offset by high water pressure at the latter of operation, which made the membrane filtration efficiency increase. The water recovery rate that could keep the flux resistance at a low level was about 70%, regular backwashing could reduce the flux resistance.

关 键 词：超滤膜 通量阻力 过滤效率 

分 类 号：X703.1[环境科学与工程—环境工程] TQ028.8[化学工程]