超滤膜处理沉淀池出水的膜污染影响因素研究  

Influencing Factors of Membrane Fouling in Treatment of Effluent from Sedimentation Tank by Ultrafiltration Membrane

作　　者：汪燕[1] 魏俊起 付婉霞[1] 何凤华[2] 张顺利[2] 

机构地区：[1]北京建筑工程学院环境与能源工程学院,北京100044 [2]天津泰达自来水公司,天津300457

出　　处：《中国给水排水》2011年第7期51-54,共4页China Water & Wastewater

摘　　要：在中试规模下采用超滤膜处理供水厂的沉淀池出水,考察了供水厂原水水质期、混凝剂和助凝剂的种类、膜通量以及过滤周期等因素对膜污染的影响。结果表明,不同水质期的膜污染速度顺序为:低温低浊期>常温常浊期>高温高藻期;混凝剂及助凝剂的种类和投量对膜污染有一定的影响;膜通量越小、过滤周期越短,则膜比通量下降速率和衰减速率越小,膜污染速度越慢。In a pilot-scale experiment, the ultrafiltration membrane （UF） process was used to treat the effluent from sedimentation tank in waterworks. The influence of water quality phase, types of coagulant and coagulant aid, membrane flux and filtration cycle on the membrane fouling was investigated. The results show that the sequence of membrane fouling rate at different water quality phases is low temperature and turbidity phase 〉 normal temperature and turbidity phase 〉 high temperature and algae phase. The type and dosage of coagulant and coagulant aid influence the membrane fouling. The lower the membrane flux and the shorter filtration cycle are, the smaller the decreasing rate and the decay rate of specific flux are, and the lower the fouling rate is.

关 键 词：沉淀池出水 超滤膜 膜污染 膜比通量 

分 类 号：TU991.2[建筑科学—市政工程]