摘要
基于微观颗粒受力分析,结合“浅池沉淀理论”反向思维,建立了平板膜组件尺寸优化模型.通过计算流体力学(CFD)技术模拟膜组件微观流场,对平板膜组件进行了尺寸优选.并以城市污水典型污染物腐殖酸(HA)、海藻酸钠(SA)、牛血清蛋白(BSA)为研究对象,对膜组件的抗污染性能进行了实验研究.结果表明:当膜组件长宽高比例为40∶30∶1时,优化膜组件对HA、SA、BSA的比通量衰减率在2 h内比原组件分别减小了14%、9.3%、7.9%,且污染膜阻力均小于原组件,采用受力分析优化膜组件可以在流场及污染控制中取得良好效果.
Based on the force analysis of micro-particles, the size optimization model of flat crossflow membrane module was established by combining the reverse idea of shallow tank sedimentation theory, and the size of flat membrane module was confirmed by using computational fluid dynamics(CFD) technology to simulate the micro-flow field. Humic acid(HA), sodium alginate(SA), and bovine serum albumin(BSA) were chosen as model foulants of effluent organic matter(EfOM) to investigate the antifouling performance of the membrane module experimentally. The results showed that when the ratio of length, width and height of the membrane module was 40∶30∶1, the flux decline rate of the optimized membrane module for HA, SA and BSA decreased by 14%, 9.3% and 7.9% respectively in two hours compared with the original module. The membrane fouling resistance was lower than that of the original module, indicating that the optimized membrane module using force analysis had a good effect on flow field and membrane fouling control.
作者
刘正球
张立卿
杨镇豪
胡吉玉
张超
LIU Zhengqiu;ZHANG Liqing;YANG Zhenghao;HU Jiyu;ZHANG Chao(School of Civil Engineering and Architecture?University of Ji^nan,Ji'nan 250022,China)
出处
《膜科学与技术》
CAS
CSCD
北大核心
2022年第2期110-116,共7页
Membrane Science and Technology
基金
国家自然科学基金项目(51408260)
绿色建筑西部国家重点实验室开放项目(LSKF201807)。
关键词
受力分析
平板膜组件
微观流场
抗污染性能
force analysis
flat membrane module
micro-flow field
antifouling performance
