粉末活性炭-超滤工艺处理微污染水中试研究  

Pilot-scale study on combined process of powered activated carbon and ultrafiltration for micro-polluted water treatment

作　　者：李星[1] 芦澍[2] 杨艳玲[1] 陈杰[3] 

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]北京建筑材料科学研究总院固废资源化利用与节能建材国家重点实验室,北京100041 [3]苏州立升膜分离科技有限公司,江苏苏州215512

出　　处：《中国矿业大学学报》2011年第4期598-602,共5页Journal of China University of Mining & Technology

基　　金：国家水体污染控制与治理科技重大专项项目(2008ZX07422-005);国家"十一五"科技支撑计划项目(2006BAJ08B06);北京市自然科学基金项目(8092005)

摘　　要：基于超滤膜对有机物去除率低、膜污染严重的现状，分析了粉末活性炭协同超滤膜运行效果．采用粉末活性炭一超滤（PAC—UF）组合工艺处理微污染原水，对比了PAC—UF组合工艺与单独UF工艺对浊度和有机物的去除效果．研究了PAC投加量对PAC—UF组合工艺的污染物去除效能以及对超滤运行性能的影响．结果表明：通过与PAC联用，UF工艺对有机物的去除率明显提高，对cODMn和UV254的去除率均在569／6以上，并随着投炭量的增加呈递增趋势．组合工艺对浊度的去除率很高，但出水浊度略高于单独UF工艺，并且随着投炭量的增加略呈上升趋势，但均低于0．20NTU．投加PAC能够有效减缓膜污染，随着投炭量的增加，跨膜压差增长变缓；但过大投炭量反而会加剧膜污染的速率，最佳PAC投加量为2～10g／L．Operating effects of powered activated carbon combined with ultrafiltration was investigated, based on the status with low removal rate to organic matters and serious pollution of ultrafiltration membrane. Combined pilot-scale treatment process of powered activated carbon and ultrafiltration （PAC-UF） was applied to treat micro-polluted raw water. The removal effects of turbidity and organics on PAC-UF combined process and UF process were compared. The effects on pollutant removal and UF operation performance were studied with different PAC dosages. The results show that the organics removal efficiency of UF process combined with PAC is obviously improved. The average removal rate of CODMn and UV2s4 are both above 56, and higher with the PAC dosage increased. The turbidity removal rate of PAC-UF process is very high. The effluent turbidity of PAC-UF process is higher slightly than that of UF process, and is higher with the PAC dosage increased, but is below 0.20NTU totally. Membrane pollution could be lessened effectively by PAC addition. The increase of transmem- brane pressure is slower down with PAC dosage increased. But it is existed the optimum PACdosage. The membrane pollution is aggravated by overdosaged PAC. The PAC dosage of 10 g/L is the optimum value in the study.

关 键 词：粉末活性炭 超滤 投炭量 微污染水 

分 类 号：TU991[建筑科学—市政工程]