摘要
在膜分离过程中,某一特定组分较易透过膜,使膜面出现不同组份富集的现象,导致极化和污染的发生,造成分离效率的降低,这一现象在压力驱动的膜分离过程中表现尤为明显。本文对多孔膜中的极化和污染现象的一些模型进行了总结和讨论。
In the process of membrane separation, each components of the feed has its own transmembrane flux, which results in the accumulation of the solutes and particles being retained near the membrane surface to cause the membrane fouling and concentration polarization. It is one of the reasons about the decline of the membrane separation efficiency. The phenomenon is more obvious in the pressure-driven membrane process. The article discusses the models about fouling and concantration polarization taken place in porous membrane separation and the relation between fouling and polarization.
出处
《水处理技术》
CAS
CSCD
北大核心
2006年第4期1-4,共4页
Technology of Water Treatment
关键词
污染
极化
多孔膜
模型
膜分离
fouling
polarization
porous membrane
model
