海水驱动不同正渗透膜分离性能对比研究  

Comparative Study on Separation Performance of Seawater-driven Different Forward Osmosis Membranes

作　　者：张壹超 丁玥 黄秋香 程一桥 刘志强[1] ZHANG Yichao;DING Yue;HUANG Qiuxiang;CHENG Yiiao;LIU Zhiqiang(School of Environmental and Municipal Engineering,Qingdao University of Technological,Qingdao 266033,China;College of Chemistry and Materials Engineering,Anhui Science and Technological University,Chuzhou 233100,China)

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033 [2]安徽科技学院化学与材料工程学院,安徽滁州233100

出　　处：《水处理技术》2021年第9期103-106,共4页Technology of Water Treatment

摘　　要：以天然海水作为正渗透汲取液,对比研究CTA-ES和TFC-ES正渗透膜在不同膜朝向和错流速度下的清水通量和截留污染物效果,结果表明,2种正渗透膜在不同膜朝向下通量变化趋势类似;错流速度对活性层朝向汲取液侧运行模式(PRO)运行影响较大,体积流量为2 L/min时,正渗透性能较稳定;相同操作条件下,TFC膜具有较高的纯水渗透性和盐排斥性,最高通量是CTA膜的1.6倍以上,特性反向溶质通量在0.5以下,更适用于脱盐过程;CTA膜的运行稳定性较好,对污染物的截留率在93%以上,截留效能要优于TFC膜。The natural seawater was used as the forward osmosis extraction liquid,and the clean water flux and pollutant retention effect of the CTAES and TFC-ES forward osmosis membranes under different membrane orientations and cross-flow speeds were compared.The results showed that,the trend of the two membranes facing the downward water flux and the reverse solute flux was similar;the cross-flow speed had a greater impact on the operation of the pressure retarded osmosis(PRO)mode,when the volume flow rate was 2 L/min,the forward osmosis performance was relatively stable.Under the same operating conditions,TFC membrane had higher pure water permeability and salt rejection,the highest flux was more than 1.6 times that of CTA membrane,and the characteristic reverse solute flux was below 0.5,which was more suitable for desalination process.The operation stability of CTA membrane was good,the interception rate of pollutants was above 93%,and the interception efficiency was better than that of the TFC membrane.

关 键 词：正渗透 TFC膜 CTA膜 水通量 截留率 

分 类 号：TQ028.8[化学工程]