耦合生物反应器处理低碳氮比污水特性研究  

Study on treatment of low C/N ratio wastewater by coupling bioreactor

作　　者：李军[1] 张宁[1] 杨海燕[1] 李艺[2] 张韵[2] 王秋颖[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：《现代化工》2005年第12期32-36,共5页Modern Chemical Industry

基　　金：北京市自然科学基金(8052005);北京市科技新星计划项目(9558100800);北京市规划委员会资助项目(KZ00017)

摘　　要：基于流离、多相生物反应原理开发了耦合生物反应器,探讨了耦合生物反应器及其污水处理、污泥减量特性。研究表明,耦合生物反应器进水COD负荷从0.49 kg/(m3.d)上升到1.93 kg/(m3.d)时,均可使COD去除率达85%以上。实验中通过调节各种工艺,确定在微量曝气+缺氧+好氧工况中可以达到良好的处理效果。在该工况下的水力停留时间(HTR)为8 h时,缺氧区体积比为43%,总氮去除率86.7%,出水总氮<15 mg/L。耦合生物反应器污泥减量效果好,反应器每千克COD的污泥平均产率为0.068 kg。A coupling bioreactor based on the flow separate and multi-phase reaction principle was designed to study on the wastewater treatment effects and the characteristic of the sludge reduction.The results show that when the COD loading rate increases from 0.49 kgCOD/（ m^3·d） to 1.93 kgCOD/（m^3· d）, the coupling bioreactor keeps a stable COD removal rate above 85%., bearing a high impact. By changing various parameters, good treatment effects can be obtained under the process of Micro ＋ Anoxic ＋ Aeration. With 8 h of HRT and 43 % of volume percent of anoxic section, the TN removal efficiency can reach 86.7%. The effluent TN is less than 15 mg/L. The average values of the sludge production rate for the coupling bioreactor in different processes is calculated to be only 0.068 kgMLSS/kgCOD and the sludge reduction effect was excellent.

关 键 词：耦合生物反应器 污泥减量 流离 

分 类 号：X703[环境科学与工程—环境工程]