pH对超滤膜的过滤性能的影响  

Effect of pH on performance of ultrafiltration

作　　者：董秉直[1] 夏丽华[1] 陈艳[1] 高乃云[1] 范瑾初[1] 

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《膜科学与技术》2006年第2期41-44,共4页Membrane Science and Technology

基　　金：国家高技术研究发展计划(863)资金资助(2002AA601130);国家科技攻关计划重大项目资助(2003BA808A17)

摘　　要：研究了原水pH的变化对超滤膜过滤性能的影响.原水pH的下降减小了有机物的表观尺寸并增强了其疏水性,加强了超滤膜吸附有机物的能力,但同时造成了严重的膜污染.在混凝作为预处理的情况下,pH的下降有助于混凝去除有机物,因而有利于减轻膜污染.The aim of this investigation was to study the effect of pH variation on performance of ultrafiltration. The reduction in pH of raw water can decrease apparent size and enhance the hydrophobic for organics, hence the ability of adsorption onto membrane was enhanced and severe fouling was resulted. When the coagulation was used as pretreatment, the reduction in pH was useful for removal organics and mitigation of fouling.

关 键 词：超滤膜 PH 有机物 混凝 膜污染 

分 类 号：TU991.2[建筑科学—市政工程]