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.
出处
《膜科学与技术》
CAS
CSCD
北大核心
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)
关键词
膜污染
膜孔堵塞
过滤面积
membrane fouling
membrane pore blocking
filtration area
