硝化类型对污水脱氮过程中N_2O产生量的影响  

Influence of nitrification type on N_2O production in nitrogen removal treating domestic wastewater

作　　者：刘秀红[1] 彭永臻[1] 马涛[2] 尚会来[3] 吴昌永[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [2]青岛理工大学环境与市政学院,山东青岛266033 [3]北京工业大学环境与能源工程学院北京市水质科学与水环境恢复工程重点实验室,北京100022

出　　处：《中国环境科学》2007年第5期633-637,共5页China Environmental Science

基　　金：国家自然科学基金资助项目(50478040);北京市属市管高等学校人才强教"创新团队"资助项目[PHR(IHLB)]

摘　　要：采用好氧-缺氧SBR系统,研究实际生活污水脱氮过程中N2O的产生与释放情况,重点考察硝化类型对脱氮过程中N2O产生量的影响.结果表明,实际生活污水脱氮过程中N2O主要产生于硝化阶段,而反硝化阶段有利于降低N2O产生量.硝化类型对脱氮过程中N2O产生量有显著影响.全程硝化和短程硝化过程中N2O-N产生量分别为1.87,0.90mg/L,短程硝化过程中N2O产生量远低于全程硝化过程中N2O产生量.在DO浓度不受限制的情况下,应用实时过程控制,实现短程硝化反硝化,可降低污水脱氮过程中N2O产生量.N2O production and emission in nitrogen removal process treating real domestic wastewater was studied utilizing oxic-anoxic SBR system. The influence of nitrification type on N2O production in nitrogen removal was investigated mainly. N2O was mainly produced in nitrification, while denitrification potentially lower N2O emission. N2O production in complete and short-cut nitrification was 1.87mg/L and 0.90mg/L, respectively. Under the condition of the short-cut nitrification, N2O production was obviously lower than that in the complete nitrification. Not control of DO concentration, applying real-time controlling the short-cut nitrification and denitrification could lower the N2O production in nitrogen removal from domestic wastewater.

关 键 词：生活污水 N2O产生量 全程硝化 短程硝化 实时过程控制 

分 类 号：X703.1[环境科学与工程—环境工程]