应用化学2017，Vol.34Issue(4)：367-378,12.DOI:10.11944/j.issn.1000-0518.2017.04.160351
纳滤膜盐水溶液软化过程中膜面动态结垢机理研究进展
Research Progress on Dynamic Scaling Mechanism on Nanofiltration Membrane Surface for Saline Water Softening
摘要
Abstract
Membrane scaling is regarded as one of the key-problems for nanofiltration(NF) membrane separating performance during salt solution softening process.Most of the studies on NF membrane inorganic fouling were performed to comprehensively investigate the running conditions(such as NF permeate recovery and recycling ratio) on the scaling potential prediction and apply different techniques to characterize the NF membrane scaling morphology.However, only a few information was reported systematically about the mechanisms and processes of NF membrane surface dynamic scaling.The fundamental mechanisms and processes referred to sparing soluble precipitations and scaling are not cleared clarified.This paper focuses on the research progress for the mainly NF membrane scaling mechanisms(including crystallization and particulate fouling, bulk crystallization and surface crystallization), which play critical roles during scale formation on NF membrane surface.Besides, it is introduced in detail for the resistance(including membrane resistance, concentration polarization resistance, cake resistance and pore-block resistance) models used to quantify NF membrane inorganic fouling.In addition, the scaling processes including concentration polarization stage, nucleation stage, crystallization and deposition stage, respectively, on the NF membrane surface are introduced briefly.Finally, the further development as well as challenges on dynamic scaling mechanism on NF membrane surface for saline water softening are suggested.关键词
纳滤膜/盐水软化/结垢机理/膜面结垢阻力Key words
nanofiltration membrane/saline water softening/scaling mechanism/membrane surface scaling resistance分类
化学化工引用本文复制引用
李铁梅,宋跃飞,王楠楠,王雪玉..纳滤膜盐水溶液软化过程中膜面动态结垢机理研究进展[J].应用化学,2017,34(4):367-378,12.基金项目
国家自然科学基金(21606074)、中国博士后科学基金(2016M592297)和河南省博士后基金(2015073)资助 （21606074）
Supported by the National Natural Science Foundation of China(No.21606074), China Postdoctoral Science Foundation(No.2016M592297), Henan Province Postdoctoral Science Foundation(No.2015073) （No.21606074）
