平板膜-生物反应器净化微污染水源水的研究  

Study on micro-polluted water purification by flat membrane bioreactor

作　　者：吴志超[1] 华娟[1] 王志伟[1] 刘江锋[1] 

机构地区：[1]同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海200092

出　　处：《环境工程学报》2007年第4期61-64,共4页Chinese Journal of Environmental Engineering

摘　　要：利用平板膜-生物反应器恒流运行处理微污染水源水,考察通量为18、25及30 L/m2.h时其运行特性及有机物和氨氮的去除效果。结果表明:3个工况对COD的去除率分别为78.7%、76.9%和80.4%,出水COD低于15 mg/L;3个工况对NH4+-N的去除率分别为90.4%、87.4%和92.8%,出水NH4+-N低于0.5 mg/L;3个工况对UV254的去除率分别为27.5%、28.2%和48.1%。胞外聚合物(EPS)的研究结果表明,其与膜污染之间并没有显著关系,运行通量的选择是影响膜污染和操作运行的一个重要原因。Operational characteristics and removal effects of organic substances and ammonium of micro- polluted source water treatment by flat membrane bioreactor were studied with membrane flux 18, 25 and 30 L/ m^2· h. Test results indicated that COD removal rates of the three runs were 78.7% , 76.9% and 80.4% ,respectively. Effluent COD of the three runs were all lower than 15 mg/L. NH4^＋ -N removal rates of the three runs are 90.4%, 87.4% and 92.8%, respectively. Effluent NH4^＋-N of the three runs were all lower than 0.5 mg/L. UV254 removal rates of the three runs were 27.5% , 28.2% and 48.1% , respectively. Test results also showed that there was no notable correlation between EPS concentration of mixed liquor and membrane fouling. The selection of operational flux had significant effects on membrane fouling and operation of flat membrane bioreactor in this study.

关 键 词：平板膜-生物反应器 微污染水源水 胞外聚合物(EPS) 膜污染 

分 类 号：X52[环境科学与工程—环境工程]