原水及沉后水对PAC/UF工艺膜污染的影响  

Effect of raw water and sedimentation effluent on fouling control of PAC/UF integrated process

作　　者：刘永旺[1] 李星[1] 杨艳玲[1] 安东子[2] 任家炜[1] 周志伟[1] 贾瑞宝[3] 宋武昌[3] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京首钢国际工程技术有限公司,北京100043 [3]济南市供排水监测中心,济南250021

出　　处：《哈尔滨工业大学学报》2014年第2期98-103,共6页Journal of Harbin Institute of Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07404-003)

摘　　要：为考察超滤过程膜污染的主要影响因素,采用模拟粉末活性炭-超滤(PAC/UF)工艺处理微污染原水及其沉后水,对比两种水体膜污染特性差异,分析颗粒物粒径和溶解性有机物特性对膜污染的影响.结果表明,PAC/UF工艺能够有效减轻沉后水超滤过程膜污染,但对原水超滤过程没有改善效果.原水以中小分子亲水性有机物为主,PAC可有效去除其中芳香类和溶解性微生物代谢产物,但没有减轻膜污染,这些有机物不是造成原水膜污染的主要因素.胶体颗粒粒径小、含量高是导致PAC/UF工艺无法减轻原水膜污染的主要原因,颗粒含量及粒径分布对膜污染有重要影响.To investigate the main factor that influenced membrane fouling in ultrafiltration, a simulated process of powdered activated carbon and ultrafiltration （PAC/UF） was used to treat micro-polluted raw water and the sedimentation effluent. Membrane fouling characteristics of two samples, effect of particle size and dissolved organic matter on membrane fouling were investigated. The results indicated that PAC/UF process could mitigate the membrane fouling of the sedimentation effluent, but it could not alleviate the membrane fouling of raw water. Organics in the raw water were mostly hydrophilic organic-based small molecules, and it could not mitigate the membrane fouling of the raw water although the aromaticity and the dissolved microbiological products were reduced with the adsorption of PAC particles, which indicated that the adsorbed organic did not cause serious membrane fouling in the raw water. The particles in raw water, with a small particle size and high number, was thought to be the main factor that leading to the invalid fouling control function of PAC/UF process on raw water. Particle number and particle size distribution have a critical role in membrane fouling

关 键 词：超滤 粉末活性炭 颗粒物 有机物 膜污染 

分 类 号：TU991[建筑科学—市政工程]