以化学抑制法研究污水生物处理过程中N_2O的释放源  

A study on the source of the emitted N_2O during the biological wastewater treatment by the use of inhibitors

作　　者：李一冉[1] 张建[1] 胡振[1] 谢慧君[1] 张婷婷[1] 赵聪聪[1] 

机构地区：[1]山东大学环境科学与工程学院,山东济南250100

出　　处：《中国环境科学》2011年第9期1438-1443,共6页China Environmental Science

基　　金：山东大学自主创新基金杰出青年培育项目(2009JQ009)

摘　　要：采用化学抑制法,研究了不同曝气量下污水生物处理过程中N2O的释放源.结果表明,缺氧段中,N2O的主要释放源为硝酸盐异化成氨反应,而反硝化反应消耗N2O.好氧段中N2O释放源受曝气量的影响很大,当曝气量适中时(65L/h),N2O释放源主要为硝化细菌反硝化作用;而当曝气量偏高(105L/h)或偏低(25L/h)时,同步硝化-反硝化反应是主要的N2O释放源.同时硝化细菌反硝化反应也能够产生少量N2O.Inhibitors were used to investigate the sources of the N2O emission from anoxic-aerobic biological wastewater treatment process. Results showed that during the anoxic phase, nitrate ammonification was the major source of N2O while denitrification turned out to be the sink of N2O. During the aerobic phase, nitrifier denitrification was the major source of N2O emission at medium aeration rate （65L/h）, while both coupled nitrification-denitrification and nitrifier denitrification were responsible for N2O emission at lower or higher aeration rates, with the former performed as the major source

关 键 词：N2O 释放源 化学抑制法 污水生物处理 

分 类 号：X703.1[环境科学与工程—环境工程]