后置缺氧SBR短程反硝化除磷  

Denitrifying phosphorus removal by nitrite pathway in a post-anoxic SBR system

作　　者：李冬[1] 李晓莹[1] 杨杰[1] 罗亚红[2] 周元正[1] 曾辉平[1] 张杰[1,3] LI Dong;LI Xiao-ying;YANG Jie;LUO Ya-hong;ZHOU Yuan-zheng;ZENG Hui-ping;ZHANG Jie(Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124,China;Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, College of the Environment, Henan Normal University, Xinxiang 453007, China;State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China)

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,北京100124 [2]河南师范大学环境学院,黄淮水环境与污染防治省部共建教育部重点实验室、河南省环境污染控制重点实验室,河南新乡453007 [3]哈尔滨工业大学,城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090

出　　处：《中国环境科学》2017年第8期2994-3001,共8页China Environmental Science

基　　金：国家科技重大专项水专项(2012ZX07202005)

摘　　要：在将缺氧后置的序批式反应器(SBR)中,以生活污水为处理对象,研究了短程硝化与亚硝酸盐途径的反硝化除磷的实现及处理效果.结果表明,通过限氧条件下的排泥策略,可以实现常温低氨氮下的短程硝化与反硝化除磷,出水COD、TP、NH_4^+-N、TN分别为17.47,0.462,0,8.35mg/L.批次实验显示,以亚硝酸盐为电子受体的反硝化除磷菌在总聚磷菌中的比例可达70%.研究发现,140min的缺氧反应时间会对磷的去除有负面影响,宜控制在亚硝酸盐反应完毕为止;曝气方式仅影响氮的去除,总曝气量不变,采取强度前高后低(1.2~0.2L/min)的曝气策略,控制适宜的曝气强度,可提高氮的去除效果.In a post-anoxic sequencing batch reactor(SBR)system treating domestic wastewater,the realization of nitritation and denitrifying phosphorus removal by nitrite pathway and its removal efficiency was investigated.The results indicated that nitritation and denitrifying phosphorus removal in low concentration of ammonia water at room temperature was established by the strategy of sludge discharge in condition of limited oxygen.The effluent of COD、TP、NH4+-N、TN was17.47mg/L,0.462mg/L,0mg/L and8.35mg/L,respectively.According to batch experiments,the ratio of denitrifying phosphorus accumulating organisms which took nitrite as electron acceptor in total poly-phosphate accumulating organisms could reached70%.Studies had found that140mins anoxic reaction time could have negative effects on phosphorus removal,and anoxic reaction time should be controlled in the completion of the nitrite consumption.Aeration mode affected the removal of nitrogen.With total oxygen changeless,adopted the strategy of high to low strength aeration(1.2~0.2L/min),nitrogen removal efficiency could be improved.

关 键 词：短程硝化 后置缺氧 SBR 反硝化除磷 缺氧反应时间 曝气方式 

分 类 号：X703.3[环境科学与工程—环境工程]