超滤膜在饮用水处理中临界通量的影响因素研究  

Factors affecting critical flux of ultrafiltration membrane in drinking water treatment

作　　者：齐鲁[1] 王洪臣[1] 郑祥[1] 程荣[1] 陈清[2] 陈杰[2] 梁恒[3] 李圭白[3] 

机构地区：[1]中国人民大学环境学院,北京100872 [2]苏州立升膜分离科技有限公司,江苏苏州215012 [3]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090

出　　处：《工业用水与废水》2011年第6期10-14,共5页Industrial Water & Wastewater

基　　金：国家自然科学基金资助项目(50808051)

摘　　要：超滤膜在临界通量以下过滤可不产生膜污染或产生极轻的膜污染,针对超滤膜在饮用水处理中的临界通量的影响因素,系统考察曝气、过滤方式和混凝沉淀预处理等对浸没式超滤膜处理松花江水临界通量的影响。结果表明,曝气强度达到10 m3/(m2.h),连续曝气可将超滤膜的临界通量提高5 L/(m2.h),曝气强度达到40 m3/(m2.h),间歇曝气可将超滤膜的临界通量提高5 L/(m2.h),但曝气强度再增大不会继续提高临界通量;间歇过滤不能提高超滤膜的临界通量,曝气强度为40 m3/(m2.h)时,间歇过滤间歇曝气可将其临界通量提高5 L/(m2.h);混凝沉淀预处理可将超滤膜的临界通量提高10 L/(m2.h)、混凝-连续曝气和混凝-间歇过滤间歇曝气可将临界通量提高15 L/(m2.h)。No fouling or very little fouling would be caused by the filtration of uhrafiltration membrane under the critical flux. According to the factors affecting the critical flux of ultrafihration membrane in drinking water treatment, the effects of aeration, filtration mode, coagulation sedimentation pretreatment and some other factors on the critical flux of the submerged ultrafihration membrane in treatment of water from Songhua River were investigated. The results showed that, critical flux could be enhanced by 5 L/（m^2·h） under continuous aeration with the intensity of 10 m3/（m^2·h）, and the same effect could also be obtained under intermittent aeration with the intensity of 40 m3/（m^2·h）, however, after that, the critical flux could no longer be increased by increasing aeration intensity. Intermittent filtration had no positive effect on critical flux, when the aeration intensity was 40 m^3/（m^2· h）, intermittent filtration with intermittent aeration could enhance the critical flux by 5 L/（m^2·h）. Critical flux could be enhanced by 10 L/（m^2·h） when using coagulation sedimentation pretreatment, and be enhanced by 15 L/（m^2·h） when using combined process of coagulation-continuous aeration and coagulation-intermittent filtration and intermittent aeration.

关 键 词：超滤膜 临界通量 曝气 过滤方式 预处理 膜污染 

分 类 号：TU991.24[建筑科学—市政工程]