好氧反硝化菌处理高浓度氨氮废水研究  

Study on the Treatment of Wastewater Containing High-concentration Ammonia Nitrogen with Aerobic Denitrifying Bacteria

作　　者：酒卫敬[1] 汪苹[1] 岳建伟[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100048

出　　处：《环境工程技术学报》2011年第2期111-117,共7页Journal of Environmental Engineering Technology

基　　金：国家"十一五"科技支撑计划项目(2007BAK36B07);国家高技术产业发展项目

摘　　要：利用异养硝化好氧反硝化菌在序批式反应器中处理氨氮浓度高达700mg/L的模拟废水。通过试验对温度,DO浓度,pH和水力停留时间4个影响因素进行研究,优选出SBR反应器最佳运行条件。试验结果表明,在SBR反应器中通过45个周期的培养驯化,使接种污泥和投加的优势菌株具有了良好的硝化反硝化性能。在最佳运行条件下,即温度23～25℃,DO浓度2mg/L,pH6.8～8.0,水力停留时间78h时,进水CODCr为2500mg/L,CODCr去除率为88%～93%;进水氨氮浓度700mg/L,氨氮去除率为98%～99%,总氮去除率为86%～93%。The treatment of simulated wastewater containing high-concentration（up to 700 mg/L）ammonia nitrogen with heterotrophic nitrification-aerobic strains in Sequencing Batch Reactor（SBR）was studied.Four influencing factors of SBR including the temperature,dissolved oxygen concentration,pH and hydraulic retention time were studied and the optimal operating conditions obtained.The results indicated that the efficiency of simultaneous nitrification and denitrification by seeding sludge and dominant bacteria could be enhanced after cultured for forty-five operational cycles in SBR.Under the optimal conditions of temperature 23-25 ℃,dissolved oxygen concentration 2 mg/L,pH 6.8-8.0 and hydraulic retention time 78 h,when the chemical oxygen demand was 2 500 mg/L and the ammonia nitrogen was 700 mg/L in the influent,the chemical oxygen demand removal efficiency could reach 88%-93%,while the ammonia nitrogen and total nitrogen removal efficiency could achieve as high as 98%-99% and 86%-93% respectively.

关 键 词：序批式反应器 异养硝化 好氧反硝化 氨氮 

分 类 号：X703.1[环境科学与工程—环境工程]