摘要
针对膜生物反应器(MBR)能耗高的问题,开发了一种利用生物反应区内液位水头的重力出流式MBR。采用该反应器处理生活污水和毛纺废水,处理出水水质达到了《城市污水再生利用———城市杂用水水质》(GB/T18920—2002)标准。试验结果表明:选择合适的曝气量不仅有助于提高膜通量、有利于控制膜污染,还有利于生物反应器中氧的传递。MBR系统中污泥浓度为12g/L、表观气速从0.028m/s上升到0.085m/s时,混合液中与清水中氧总转移系数的比值基本维持在0.27～0.29的水平。
Due to the high-energy consumption of membrane bioreactor (MBR),a new MBR with gravity outflow was designed.In this new reactor,liquid level head in bioreactor was used to drive the continuous draining.It was used for treatment of domestic sewage and woolen mill wastewater,with the treated effluent quality coming up to the Water Quality Standard for Urban Miscellaneous Water Consumption (GB/T 18920—2002).The test result shows that the selection of proper aeration rate makes contribution not only to improving membrane flux,but also to controlling membrane fouling,and it is in favor of oxygen transfer into the bioreactor.At sludge concentration of 12 g/L in MBR system,when the apparent air flow rate rises from 0.028 m/s to 0.085 m/s,α factor is kept at 0.27-0.29.
出处
《中国给水排水》
CAS
CSCD
北大核心
2004年第12期1-4,共4页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2002AA601310)
关键词
膜生物反应器
生活污水
毛纺废水
膜通量
氧的传质
membrane bioreactor
domestic sewage
woolen mill wastewater
membrane flux
oxygen transfer
