不同工况耦合生物反应器处理低C/N比生活污水试验  

EXPERIMENT ON THE COUPLING BIOREACTOR FOR THE DOMESTIC WASTEWATER TREATMENT OF LOW C/N RATIO IN DIFFERENT OPERATING MODES

作　　者：李军[1] 张宁[1] 杨海燕[1] 李艺[2] 张韵[2] 周婷[1] 

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,北京100022 [2]北京市市政工程设计研究总院,北京100035

出　　处：《环境工程》2006年第3期23-25,28,共4页Environmental Engineering

基　　金：北京市基金(8052005);国家"863"课题(2003AA601010);北京市规委资助项目

摘　　要：在全程好氧工况或低氧+厌氧+好氧工况下,采用耦合生物反应器处理低CN生活污水和污泥减量的试验结果表明:在进水CODCr负荷0.80～1.20kg(m3·d)、NH+4N浓度70～90mgL、TN浓度75～110mgL、HRT=8h、温度约25℃条件下,CODCr和NH4N去除率均可达85%和90%以上;采用低氧+厌氧+好氧工况较全程好氧工况具有更高的TN去除率和更低的污泥产率,其TN去除率高达81.1%,污泥产率为0.065kgkg。In two different operating modes of complete-aeration or micro-aeration+anoxic+aeration,high C/N ratio domestic wastewater was treated by coupling bioreactor.The influent loading of COD_ Cr was 0.80～1.20 kg/(m^3·d),concentrations of NH^+_4-N,TN were among 70～ 90 mg/L and 75～110 mg/L,HRT and temperature in bioreactor were 8 hours and 25 ℃ respectively.Results show that the coupling bioreactor keeps a constant COD_ Cr removal rate above 85%,as well as removal rate of NH^+_4-N more than 90%.Further more,test indicates that the removal rate of TN is higher and the production of sludge is lower in the process of micro-aeration+anoxic+aeration than the other one,with the TN removal efficiency of 81.1%,the average sludge production rate of 0.065 kg MLSS/kg COD_ Cr.

关 键 词：耦合生物反应器 低C/N 低氧 污泥减量 

分 类 号：X799.3[环境科学与工程—环境工程]