COD/NH_(4)^(+)-N比对厌氧氨氧化耦合反硝化脱氮性能的影响  

Effect of COD/NH_(4)^(+)-N ratio on nitrogen removal by a coupling system of anaerobic ammonium oxidation and denitrification

作　　者：毛佩玥 付雪 赵鑫磊 邢嘉伟 安芳娇 陈永志[1,2,3] MAO Peiyue;FU Xue;ZHAO Xinlei;XING Jiawei;AN Fangjiao;CHEN Yongzhi(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Technical Center of Sewage Treatment Industry in Gansu,Lanzhou 730070,China;Key laboratory of Yellow River Water Environment in Gansu Province,Lanzhou 730070,China)

机构地区：[1]兰州交通大学环境与市政工程学院,兰州730070 [2]甘肃省污水处理行业技术中心,兰州730070 [3]甘肃省黄河水环境重点实验室,兰州730070

出　　处：《环境工程学报》2021年第4期1209-1218,共10页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51668033);甘肃省自然科学基金资助项目(18JR3RA126);甘肃省高等学校特色专业-环境工程项目(101004)。

摘　　要：将实现半亚硝化的生活污水通入厌氧氨氧化反应器(ASBR),在室温下同步添加乙酸钠调控COD/NH_(4)^(+)-N比分别为2~3、3~5、5~7和7~9,在此条件下考察了系统的脱氮性能。结果表明:在COD/N H4+-N比为3~5时,系统出水NH_(4)^(+)-N、NO_(2)^(-)-N、NO_(3)^(-)-N和COD值分别为2.30、0.65、5.56和35.20 mg·L^(-1);总氮容积负荷(TNLR)和去除负荷(TNRR)分别为0.071 kg·(m^(3)·d)^(-1)和0.062 kg·(m^(3)·d)^(-1);在典型周期内N H4+-N和COD的比反应速率分别为0.809 mg·(g·h)-1和2.098 mg·(g·h)-1;厌氧氨氧化和部分反硝化-厌氧氨氧化对脱氮的贡献率分别为78%和20%。The domestic sewage which had achieved partial nitrification was treated by an anaerobic sequencing batch reactor(ASBR)when sodium acetate was synchronously fed to control the COD/NH_(4)^(+)-N ratio.The denitrification performance of the system was investigated when the COD/NH_(4)^(+)-N ratios were set at 2~3,3~5,5~7 and 7~9,respectively at room temperature.At the COD/NH_(4)^(+)-N ratio of 3~5,the effluent concentrations of NH_(4)^(+)-N,NO_(2)^(-)-N,NO_(3)^(-)-N and COD were 2.30,0.65,5.56 and 35.20 mg·L^(-1),respectively,and the total nitrogen volume loading(TNLR)and removal loading(TNRR)were 0.071 kg·(m^(3)·d)^(-1)and 0.062 kg·(m^(3)·d)^(-1),respectively.The specific degradation rates of NH_(4)^(+)-N and COD were 0.809 mg·(g·h)-1 and 2.098 mg·(g·h)-1,respectively in typical cycles.Anaerobic anammox and partial denitrification coupled anammox accounted for 78%and 20%denitrification,respectively.

关 键 词：厌氧氨氧化(anammox) 生活污水 COD/NH_(4)^(+)-N比 脱氮贡献率 高斯模型 

分 类 号：X703.1[环境科学与工程—环境工程]