天然有机物对纳滤水处理工艺的影响  

Effect of Natural Organic Matter on Nanofiltration Membrane Process in Water Treatment

作　　者：刘艳妮[1] 程爱华[1,2] 畅飞[1] 

机构地区：[1]西安科技大学地质与环境学院,陕西西安710054 [2]西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《净水技术》2014年第1期19-24,共6页Water Purification Technology

基　　金：陕西省教育厅重点实验室项目(11JS057);留学人员科技活动择优资助项目;陕西省教育厅科学研究计划项目(2013JK0893)

摘　　要：天然有机物(NOM)广泛存在于天然水体中,对纳滤处理过程产生较大影响。该文在介绍NOM的组成和物化性质的基础上,讨论了NOM对截留率和膜通量的影响,阐述了纳滤过程中NOM的亲、疏水性,浓差极化效应,静电排斥作用,氢键作用,二价离子络合等对纳滤过程的影响机理,对提高纳滤膜过滤性能有重要意义。Natural organic matter （NOM）is ubiquitous in natural surface waters and has major effect on the water treatment during the nanofiltration （NF）process. The compositions and properties of NOM were introduced and its influences on the rejection and flux of NF were discussed. These influences of hydrophilicity/hydrophobicity of NOM,concentration polarization effect,electrostatic repulsion effect,the hydrogen bonding interaction and divalent ion chelating on nanofiltration were expunded. The effect mechanisms have important significance to improve the nanofiltration membrane performance.

关 键 词：天然有机物(NOM) 纳滤 水处理 影响因素 机理 

分 类 号：TU991[建筑科学—市政工程]