应用颗粒受力模型模拟平板膜错流微滤过程  

Numerical simulation on flat membrane microfiltration with the model of force on particle

作　　者：韩越梅[1] 刘翠波 

机构地区：[1]大连大学机械工程学院,辽宁大连116622 [2]深圳中广核工程设计有限公司,广东深圳518031

出　　处：《辽宁工程技术大学学报（自然科学版）》2010年第2期332-335,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：建设部科学技术基金资助项目(2009-K1-27)

摘　　要：为了揭示跨膜压差和悬浮液浓度对膜污染的影响规律,采用理论计算和数值模拟的方法,推导了恒压条件下颗粒受力模型函数,并对恒压错流微滤过程进行了数值模拟计算。在对模型的准确性进行验证之后,模拟计算了不同跨膜压差TMP、不同悬浮液浓度条件下渗透速度和滤饼厚度的情况。得出了渗透速度随TMP的增大或原料液浓度的减小而增大,滤饼厚度随TMP和原料液质量浓度增大而加厚。以上模拟可以在一定程度上指导实验的设计、操作等。In order to find the membrane fouling characteristics with different TMP and suspension concentrations,the theoretical calculation and numerical simulation were used to derive the model function under a constant pressure and simulate the flat membrane microfiltration.After verifying the model under a constant pressure,the permeation velocity and cake thickness were simulated with different TMP and suspension concentrations.The study concludes that the permeation velocity increases with the increase of TMP and the decrease of the suspension concentration.Also,the cake thickness increases with the increase of TMP and the suspension concentration.The results prove that the simulations can provide some guidance in experimental design and operations.

关 键 词：平板膜 错流微滤 颗粒受力模型 数值模拟 

分 类 号：X75[环境科学与工程—环境工程]