Initial nitrite concentration promote nitrite-oxidizing bacteria activity recovery from transient anoxia: Experimental and modeling investigations.

Ammonium Compounds / metabolism Bacteria / growth & development Bioreactors / microbiology Nitrites / metabolism Wastewater / microbiology
Initial nitrite concentration Modeling NOB Nitritation Transient anoxia

Journal

Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523

Informations de publication

Date de publication:
Oct 2019
Historique:
received: 29 05 2019
revised: 22 06 2019
accepted: 26 06 2019
pubmed: 22 7 2019
medline: 14 8 2019
entrez: 21 7 2019
Statut: ppublish

Résumé

Transient anoxia due to the periodic anoxic/aerobic operation is beneficial for the nitrite-oxidizing bacteria (NOB) suppression. A continuous reactor of modified University of Cape Town process treating municipal wastewater was equipped with alternating anoxic/aerobic zones to maintain nitritation. Higher nitrite accumulation ratio in the oxic zones was achieved through transient anoxia and shorter aerobic actual hydraulic retention time (15 min), but it steeply deteriorated from above 95.0% to 21.0% after elevated temperature (25 °C). Batch experiments indicated that the existence of initial nitrite at the starting of aerobic phase promoted the recovery of NOB activity from transient anoxia and inhibited the activity of ammonium-oxidizing bacteria. Furthermore, a supplemental modeling further confirmed that the specific growth rates of NOB (μ

Identifiants

DOI: 10.1016/j.biortech.2019.121711 PMID: 31323722
pubmed: 31323722
pii: S0960-8524(19)30941-1
doi: 10.1016/j.biortech.2019.121711
pii:
doi:

Substances chimiques

Ammonium Compounds 0
Nitrites 0
Waste Water 0

Types de publication

Journal Article

Langues

eng

Pagination

121711

Informations de copyright

Copyright © 2019 Elsevier Ltd. All rights reserved.

Auteurs

Wenlong Liu (W)

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.

Chao Liu (C)

National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.

Shujun Zhang (S)

Beijing Drainage Group Co. Ltd (BDG), Beijing 100022, PR China.

Pengchao Gu (P)

Beijing Drainage Group Co. Ltd (BDG), Beijing 100022, PR China.

Chen Shen (C)

National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.

Wei Wang (W)

College of Civil and Architectural Engineering, Heilongjiang Institute of Technology, Harbin 150050, China.

Yongzhen Peng (Y)

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China; National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China. Electronic address: pyz@bjut.edu.cn.

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Classifications MeSH

questionsmedicales.fr › Produits chimiques inorganiques › Composés de l'azote › Composés d'ammonium › Initial nitrite concentration promote...
questionsmedicales.fr › Bactéries › Initial nitrite concentration promote...
questionsmedicales.fr › Technologie, industrie et agriculture › Technologie › Biotechnologie › Bioréacteurs › Initial nitrite concentration promote...
questionsmedicales.fr › Composés chimiques organiques › Nitrites › Initial nitrite concentration promote...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Pollution de l'environnement › Déchets › Eaux usées › Initial nitrite concentration promote...