金属离子-腐殖酸对超滤膜污染的研究进展  

Research progress on fouling of ultrafiltration membrane by metal ion and humic acid

作　　者：朱妤斐 陈艳[1,2] 彭兴 张啸霖 ZHU Yufei;CHEN Yan;PENG Xing;ZHANG Xiaolin(School of Environment and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730070,China;Key Laboratory of Yellow River Water Environment in Gansu Province,Lanzhou Gansu 730070,China)

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070 [2]甘肃省黄河水环境重点实验室,甘肃兰州730070

出　　处：《石油化工应用》2024年第5期14-19,共6页Petrochemical Industry Application

摘　　要：膜污染是限制超滤技术在饮用水生产方面大规模应用的一大障碍。以腐殖酸(Humic Acid,HA)为代表的大分子天然有机物吸附或沉积在膜表面是引起超滤膜污染的主要原因之一。广泛存在于水环境中的金属离子几乎不会造成膜污染,但金属离子会通过电荷屏蔽、电荷中和、络合和架桥等作用对超滤膜HA产生影响,引起有机、无机以及复合膜污染问题。本文参考国内外研究成果,系统分析了一价(Na^(+)、K^(+))、二价(Ca^(2+)、Mg^(2+))和三价(Fe^(3+)、Al^(3+))金属离子对超滤膜HA污染的影响机理,为缓解HA引起的超滤膜污染问题提供了新的见解。Membrane fouling is a major obstacle limiting the large-scale application of ultrafiltration technology in drinking water production.The adsorption or deposition of natural organic matter represented by humic acid on the membrane surface is one of the main causes of fouling of ultrafiltration membrane.Metal ions widely existing in water environment hardly cause membrane fouling,but metal ions can affect ultrafiltration humic acid through charge shielding,charge neutralization,complexation and bridging,resulting in organic,inorganic and composite membrane fouling.Based on the research results at home and abroad,the influence mechanism of univalent(Na^(+),K^(+)),bivalent(Ca^(2+),Mg^(2+))and trivalent(Fe^(3+),Al^(3+))metal ions on the humic acid fouling of ultrafiltration membrane were systematically analyzed in this paper,which provided new insights for alleviating the problem of ultrafiltration membrane fouling caused by humic acid.

关 键 词：超滤膜污染 金属离子 腐殖酸 相互作用 

分 类 号：X703[环境科学与工程—环境工程]