膜生物反应器用于微污染地表水处理的中试研究  

Treatment of polluted surface water by MBR process for drinking water production

作　　者：郝爱玲[1] 陈永玲[1] 顾平[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072

出　　处：《化工学报》2006年第1期136-139,共4页CIESC Journal

基　　金：天津市科技发展计划项目(013105211).~~

摘　　要：In China surface water pollution has made quality drinking water production difficult. The major pollutants in surface water are organic matter measured by COD Mn and ammonia nitrogen. To remove these pollutants effectively, membrane bioreactor （MBR） was studied as a substitute for the conventional water treatment process. Powdered activated carbon （PAC） was dosed into the reactor to enhance the treatment efficiency. A pilot scale MBR was operated continuously for 130 days. In this period, 79.1% of COD Mn , 85.9% of UV 254 , 97.9% of UV 410 , 99.6% of turbidity and 97.4% of NH3-N could be removed, and the total coli-group was not detectable per 100 ml in the treated water. Concerning the accumulation of refractory organics in the reactor, an index A m （organics accumulative factor in the mixed liquor） was proposed. It helps to evaluate the efficiency of biodegradation and PAC adsorption of organic pollutants in the reactor. Moreover,Am appeared to have a negative effect on the removal efficiency of organic pollutants.At the end of the pilot test, three-step cleanings were carried out for the fouled membrane. The flux recovery for each cleaning step was measured, and the composition of the eluted foulants after each chemical cleaning step was analyzed. The results demonstrated that organic pollutants were the major membrane-fouling substances, and chemical cleaning with 0.4% sodium hypochlorite could remove them efficiently.In China surface water pollution has made quality drinking water production difficult. The major pollutants in surface water are organic matter measured by CODMn and ammonia nitrogen. To remove these pollutants effectively, membrane bioreactor （MBR） was studied as a substitute for the conventional water treatment process. Powdered activated carbon （PAC） was dosed into the reactor to enhance the treatment efficiency. A pilot scale MBR was operated continuously for 130 days. In this period, 79.1% of CODMn, 85.9% of UV254, 97.9% of UV410, 99. 6% of turbidity and 97. 4% of NH3-N could be removed, and the total coil-group was not detectable per 100 ml in the treated water. Concerning the accumulation of refractory organics in the reactor, an index Am （organics accumulative factor in the mixed liquor） was proposed. It helps to evaluate the efficiency of biodegradation and PAC adsorption of organic pollutants in the reactor. Moreover, Am appeared to have a negative effect on the removal efficiency of organic pollutants. At the end of the pilot test, three-step cleanings were carried out for the fouled membrane. The flux recovery for each cleaning step was measured, and the composition of the eluted foulants after each chemical cleaning step was analyzed. The results demonstrated that organic pollutants were the major membrane-fouling substances, and chemical cleaning with 0. 4% sodium hypochlorite could remove them efficiently.

关 键 词：饮用水处理 膜生物反应器 微滤 地表水 有机物去除 膜污染 

分 类 号：TU991[建筑科学—市政工程]