Start-up and nitrogen removal performance of anaerobic ammonium oxidation bio-filter - Details

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Abstract：

The　study　on　the　start-up　and　the　performance　of　ANAMMOX　process　was　undertaken　by　using　the　filter　reactor　loading　ceramsite　media.　In　this　study,　the　effluent　of　＇A-O＇　phosphorus　removal　process　was　feeded　into　the　reactor　as　experimental　substrate.　Firstly,　the　aerobic　nitrifying　bio-membrane　on　the　ceramsite　media　of　reactor　was　cultivated　naturally;　then　the　nitrifying　bio-membrane　was　converted　into　the　ANAMMOX　bio-membrane　by　the　natural　selection　and　artificial　inducement　under　the　anoxic　condition.　It　had　been　7　months　before　the　ANAMMOX　bio-filter　was　started　up　successfully,　in　which　the　removal　load　of　TN　reached　6.8　kg/m3·d　with　an　apparent　specific　growth　rate　of　the　ANAMMOX　biomass　upto　0.0018　h-1.　The　upflow　experiment　indicates　that　the　upflow　operation　is　favorable　to　improving　nitrogen　removal　capability　of　the　ANAMMOX　bio-filter.　The　maximum　total　nitrogen　removal　load　of　the　experimental　filter　reached　12.37　kg/m3·d,　which　was　higher　than　the　maximum　value　of　8.9　kg/m3·d　that　were　achieved　in　a　gas　lift　reactor　reported　in　the　literature.　In　addition,　the　stoichiometry　and　the　removal　property　of　COD　in　the　process　of　ANAMMOX　indicates　that　the　heterotrophic　denitrification　process　follows　the　ANAMMOX　process　and　is　favorable　to　the　total　nitrogen　removal　of　the　bio-filter.

Keyword：

Effluents Chemical oxygen demand Wastewater treatment Nitrogen removal Anoxic water Nitrification

Author Community：

[ 1 ] [Tian, Zhi-Yong]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Tian, Zhi-Yong]Department of Urban Water Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
[ 3 ] [Li, Dong]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Yang, Hong]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Zhang, Li-Cheng]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Zhang, Shu-De]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
[ 7 ] [Zhang, Jie]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China