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Author：

Li, Y. (Li, Y..) | Dong, W. (Dong, W..) | Hou, Z. (Hou, Z..) | Zhao, Z. (Zhao, Z..) | Xie, J. (Xie, J..) | Wang, H. (Wang, H..) | Huang, X. (Huang, X..) | Peng, Y. (Peng, Y..)

Indexed by：

EI Scopus SCIE

Abstract：

Intermittent　hydroxylamine　(NH2OH)　dosing　strategy　was　applied　to　enhance　the　stability　of　partial　nitrification　and　total　nitrogen　(N)　removal　efficiency　(TNRE)　in　a　continuous-flow　process.　The　results　showed　2　mg/L　of　NH2OH　dosing　(once　every　6　h)　could　maintain　stably　partial　nitrification　with　nitrite　accumulation　rate　(NAR)　of　91.6　%　and　TNRE　of　92.6　%.　The　typical　cycle　suggested　NH2OH　dosing　could　promote　simultaneous　nitrification–denitrification　(SND)　and　endogenous　denitrification　(END)　while　inhibit　exogenous　denitrification　(EXD).　Nitrification　characteristics　indicated　the　NH2OH　dosing　enhanced　stability　of　partial　nitrification　by　suppressing　specific　nitrite　oxidation　rate　(SNOR),　Nitrospira　and　nitrite　oxidoreductase　enzyme　(Nxr).　The　microbial　community　suggested　the　aerobic　denitrfiers,　denitrifying　glycogen　accumulating　organisms　(DGAOs)　and　traditional　denitrfiers　were　the　potential　contributor　for　advanced　N　removal.　Moreover,　NH2OH　dosage　was　positively　associated　with　NAR,　SND　and　END.　Overall,　this　study　offers　a　feasible　strategy　to　maintain　sustainably　partial　nitrification　that　has　great　application　potential.　©　2024　Elsevier　Ltd

Keyword：

Simultaneous nitrification–denitrification Endogenous denitrification Exogenous denitrification Microbial community Nitrite accumulation rate

Author Community：

  • [ 1 ] [Li Y.]School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
  • [ 2 ] [Dong W.]School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
  • [ 3 ] [Dong W.]Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Shenzhen, 518055, China
  • [ 4 ] [Dong W.]State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
  • [ 5 ] [Dong W.]Joint Laboratory of Urban High Strength Wastewater Treatment and Resource Utilization, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
  • [ 6 ] [Hou Z.]School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
  • [ 7 ] [Zhao Z.]School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
  • [ 8 ] [Xie J.]School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
  • [ 9 ] [Wang H.]School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China
  • [ 10 ] [Wang H.]Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Shenzhen, 518055, China
  • [ 11 ] [Wang H.]State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, China
  • [ 12 ] [Wang H.]Joint Laboratory of Urban High Strength Wastewater Treatment and Resource Utilization, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
  • [ 13 ] [Huang X.]Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Shenzhen, 518055, China
  • [ 14 ] [Huang X.]Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, 210044, China
  • [ 15 ] [Peng Y.]National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing, 100124, China

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Source ：

Bioresource Technology

ISSN： 0960-8524

Year： 2024

Volume： 406

1 1 . 4 0 0

JCR@2022

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 8

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 6

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