膜污染程度的评价指标——膜孔堵塞率  

Evaluation index for membrane fouling degree——Membrane pore blocking rate

作　　者：孙文鹏[1] 李星[1] 杨艳玲[1] 陈杰[2] 

机构地区：[1]北京工业大学北京市水质科学与水环境恢复工程重点实验室,北京100124 [2]苏州立升膜分离科技有限公司,苏州215152

出　　处：《膜科学与技术》2009年第5期62-65,共4页Membrane Science and Technology

基　　金：国家十一五科技支撑计划资助项目(2006BAJ08B06);国家水体污染控制与治理科技重大专项(2008ZX07422-005;2008ZX07421-002)

摘　　要：首先利用伯努力方程导出微孔过流断面的流速,其次引用水力学中元流的概念,推导出超滤膜的有效过滤面积,然后通过一定的方法推导得出膜孔堵塞率概念.该膜污染程度评价指标不受膜运行方式的限制,特别是恒定通量运行方式的限制,用其评价膜的污染程度,具有一定的优势.Firstly, it was to derive micropore velocity of flow cross - section by applying Bernoulli equation. Sec- ondly, quoted the conception of element flow in hydraulics in order to deduce the effective filtration area of ultra- filtration membrane. Finally, deduced a conception of membrane pore blocking rate by means of some method. The membrane fouling degree index evaluated is not restricted by the method of operation of membrane, specially constant flux. There is a certain predominance in evaluating the pollution level of constant flux of membrane.

关 键 词：膜污染 膜孔堵塞 过滤面积 

分 类 号：TB383.2[一般工业技术—材料科学与工程]