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.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
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)]
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
domestic wastewater. N2O production
complete niWification
short-cutnitrification
real-timecontrol
