Stability for shortcut nitrification in SBR under low ammonia atlow temperature - 文章详情页

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摘要：

At　11~15°C,　in　SBR　the　stability　of　shortcut　nitrification　was　researched　under　low　ammonia　nitrogen　(55　±　5　mg/L).　Results　show　that　system　could　achieve　good　stability　and　removing　effect　under　two　kinds　of　the　DO　level　(initial　DO　0.9~1.5,　4.5~5.0mg/L).　In　150cycles　the　nitrosation　rate　had　been　maintained　above　95%,　ammonia　oxidation　rate　was　more　than　85%,　and　the　average　SVI　was　35.22　mL/g.　At　two　DO　average　levels　ammonia　nitrogen　removal　Sludge　load　was　0.15,　0.23　kgN/　(kg　MLSS　·　d)　respectively.　When　the　initial　DO　was　4.5~5.0mg/L,　at　21~23°C　stable　operation　of　the　shortcut　nitrification　cannot　be　realized.　Nitrosation　rate　fell　to　70%　after　42cycle.　Butthe　shortcut　nitrificationcan　be　restored　at　31~33°C.　In　this　analysis　and　FISH　test　research,　the　activity　of　the　NOB　can　be　inhibited　at　11~15°C　and　31~33°C　so　that　shortcut　nitrification　has　a　stable　operation.

关键词：

Stability Convergence of numerical methods Ammonia Nitrogen removal Nitrification

作者机构：

[ 1 ] [Zhang, Gong-Liang]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Li, Dong]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Zhang, Xiao-Jing]State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
[ 4 ] [Zeng, Hui-Ping]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Su, Dong-Xia]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Zhou, Yuan-Zheng]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 7 ] [Zhang, Jie]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 8 ] [Zhang, Jie]State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China

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lidong2006@bjut.edu.cn

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