高密度沉淀池-超滤组合工艺处理微污染水中试  

Pilot-scale Study of Combined Process of High Density Settling Tank and UF for Micro-polluted Water Treatment

作　　者：李星[1] 芦澍[1,2] 孙文鹏[1] 杨艳玲[1] 陈杰[2,3] 

机构地区：[1]北京工业大学北京市水质科学与水环境恢复工程重点实验室,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215152

出　　处：《北京工业大学学报》2011年第9期1387-1392,共6页Journal of Beijing University of Technology

基　　金：国家水体污染控制与治理科技重大专项资助项目(2008ZX07421-002;2008ZX07422-005);国家'十一五'科技支撑计划资助项目(2006BAJ08B06);北京市自然基金资助项目(8092005)

摘　　要：采用高密度沉淀池-超滤组合中试工艺,处理存在低温、低浊、高藻、高有机物等特点的微污染原水.试验结果表明,组合工艺对浊度、藻类及微生物指标的去除效果极佳,出水浊度值在0.07～0.09 NTU,藻类基本全部去除,未检测出总大肠杆菌群;组合工艺的CODMn和氨氮去除率分别达到31.12%和52.65%,具有良好的处理效果.在高密度沉淀池中投加3 mg/L和5 mg/L的粉末活性炭,可使CODMn去除率分别提高至38.6%和44.6%,超滤出水ρ(CODMn)已远低于3.0 mg/L,并能延缓膜污染,降低跨膜压差增长速度,有效延长超滤膜的化学清洗周期.Combined pilot-scale treatment process of high density settling tank and UF is applied to treat micro- polluted raw water with low-temperature, low-turbidity, high-algae, high-organic, et al. Experimental results show that combined process has excellent removal effects on turbidity, algae and microorganism index. The turbidity of UF membrane effluent is 0.07 - 0.09 NTU, algae is removed completely, and Escherichia coli group is not detected. The average removal rate of CODMn and ammonia is 31.12% and 52.65% respectively. The removal rate of CODMn is improved to 38.6% and 44.6% respectively by addition of powered activated carbon with 3 mg/L and 5 mg/L refluxing in high density settling tank, and CODMn value of UF effluent is lower than 3.0 mg/L. Membrane pollution can be lessened. It decreases the increasing rate of trans-membrane pressure drop. Chemical washing period of UF extends effectively.

关 键 词：高密度沉淀池 超滤 粉末活性炭 微污染水 

分 类 号：TU991[建筑科学—市政工程]