Effect of endogenous denitrification rate of domesticated GAOs on NO2--N and NO3--N - Details

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Abstract：

Glycogen　accumulating　organisms　(GAOs)　has　been　enriched　in　the　anaerobic-aerobic　sequencing　batch　reactor　(AO-SBR)　(drained　after　anaerobic)　with　glucose　as　the　carbon　source　and　the　P/C　ratio　less　than　2/100.　PRA　was　less　than　1.0　mg•L-1.　The　content　of　gly　was　1.2　times　the　initial　stage　of　GAOs　enrichment.　The　domesticated　GAOs　cultured　in　anaerobic-anoxic　operation　could　proceed　endogenous　denitrification　reaction　with　NO2--N　and　NO3--N　as　endogenous　carbon　source.　GAOs　used　intracellular　poly-β-hydroxyvalerate　(PHV),　poly-β-hydroxyvalerate　(PHB)　and　glycogen　(gly)　in　turns　as　carbon　source　in　endogenous　denitrification　process.　The　average　endogenous　denitrification　rate　of　DGAOs　using　NO2--N　and　NO3--N　as　electron　acceptors　were　0.067　g　N•(g　VSS)-1•d-1　and　0.023　g　N•(g　VSS)-1•d-1　at　22,　respectively.　Short-range　endogenous　denitrification　rate　was　about　three　times　as　much　as　endogenous　denitrification　rate　at　normal　temperature.　©　All　Right　Reserved.

Keyword：

Blast enrichment Denitrification Carbon Anoxic water Batch reactors Nitrogen oxides Water aeration

Author Community：

[ 1 ] [Jia, Shuyuan]National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Wang, Shuying]National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Zhao, Ji]National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Li, Xiyao]National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Zhang, Qiong]National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Peng, Yongzhen]National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China

Reprint Author's Address：

王淑莹
[wang, shuying]national engineering laboratory for advanced municipal wastewater treatment and reuse technology, key laboratory of beijing for water quality science and water environment recovery engineering, beijing university of technology, beijing; 100124, china

Email：

wsy@bjut.edu.cn

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