南京工业大学学报（自然科学版）2016，Vol.38Issue(6)：86-92,7.DOI:10.3969/j.issn.1671-7627.2016.06.015
圆盘式膜组件中浓差极化现象研究
Study of concentration polarization in disc-type membrane module
摘要
Abstract
Disk⁃type membrane module and DK membrane were used to characterize the retention of KCl solution.Computational fluid dynamics (CFD) simulation,velocity variation method (VVM),and Donnan steric pore&dielectrical exclusion ( DSPM⁃DE) model were used to fit and analyze experimental results. Results showed that the real retention of KCl was obviously higher than the observed one. transmembrane pressure feeble effected tangential velocity in disc⁃type membrane module,so VVM could be directly used to simulate the phenomenon of concentration polarization ( CP ) . The deviation between real and observed retention are mainly effected by solute concentration,permeate volume flux and tangential velocity on the membrane.Fitting results from DSPM⁃DE model showed that the change of Xd was followed by solute concentration,permeate volume flux variation. Under the situation of unchanged tangential and permeate volume flux, solute concentration increase would enhance the phenomenon of CP, but the CP layer remained the same.关键词
纳滤/CFD模拟/圆盘式膜组件Key words
nanofiltration/CFD simulation/disc-type membrane module分类
化学化工引用本文复制引用
马宇,杨刚,邢卫红..圆盘式膜组件中浓差极化现象研究[J].南京工业大学学报（自然科学版）,2016,38(6):86-92,7.基金项目
国家科技支撑计划 （）
