Fast startup and nitrogen removal performance of SNAD granular sludge for treating domestic sewage - Details

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Abstract：

Rapid　cultivation　of　simultaneous　partial　nitrification,　anammox　and　denitrification　(SNAD)　granular　sludge　by　inoculating　CANON　flocculent　sludge　and　controlling　setting　time,　HRT,　DO　and　the　composition　of　influent　substrate　(the　ratio　of　synthetic　wastewater　and　the　actual　sewage)　was　investigated　in　sequencing　batch　reactor.　Then,　the　feasibility　of　SNAD　granular　sludge　treating　domestic　sewage　was　investigated.　The　results　showed　that　SNAD　granular　sludge　could　be　cultivated　within　34　days,　the　maximum　size　of　granular　sludge　reached　1103　μm　and　the　total　nitrogen　removal　rate　reached　1.03　kg/(m3·d).　With　the　decrease　of　influent　substrate,　the　nitrogen　removal　path　of　CANON　always　kept　the　dominant　position　in　the　reactor.　And　a　simultaneous　removal　of　C,N　was　achieved,　with　the　average　effluent　TN　was　10　mg/L,　the　average　effluent　COD　was　40　mg/L.　The　water　quality　of　effluent　met　the　demand　of　the　first　grade　A　standards　of　Urban　Sewage　Disposal　Plant　Contamination　Integrated　Discharge　Standard　(GB18918-2002).　©　2016,　Editorial　Board　of　China　Environmental　Science.　All　right　reserved.

Keyword：

Sewage Denitrification Water quality Wastewater disposal Effluents Nitrification Nitrogen removal Wastewater treatment Batch reactors Granular materials

Author Community：

[ 1 ] [Fan, Dan]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 ] [Liang, Yu-Hai]Key Laboratory of Beijing For Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Lü, Yu-Feng]Key Laboratory of Beijing For Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Zhang, Jin-Ku]Key Laboratory of Beijing For Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Zhang, Jie]Key Laboratory of Beijing For Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing; 100124, China
[ 7 ] [Zhang, Jie]State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin; 150090, China

Reprint Author's Address：

李冬
[li, dong]key laboratory of beijing for water quality science and water environment recovery engineering, beijing university of technology, beijing; 100124, china

Email：

lidong2006@bjut.edu.cn

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