Coupling of partial nitritation and anammox in two- and one-stage systems: Process operation, N2O emission and microbial community

2018 ◽  
Vol 203 ◽  
pp. 559-573 ◽  
Author(s):  
Romain Connan ◽  
Patrick Dabert ◽  
Marina Moya-Espinosa ◽  
Gilbert Bridoux ◽  
Fabrice Béline ◽  
...  
Keyword(s):  
Microbial Community ◽  
N2o Emission ◽  
Partial Nitritation ◽  
One Stage ◽  
Process Operation

Granular biomass capable of partial nitritation and anammox

2008 ◽  
Vol 58 (5) ◽  
pp. 1113-1120 ◽  
Author(s):  
S. E. Vlaeminck ◽  
L. F. F. Cloetens ◽  
M. Carballa ◽  
N. Boon ◽  
W. Verstraete
Keyword(s):  
Removal Rate ◽  
Batch Reactor ◽  
Ammonium Oxidation ◽  
Autotrophic Nitrification ◽  
Partial Nitritation ◽  
One Stage ◽  
Biomass Retention ◽  
Granular Biomass ◽  
The One

A novel and efficient way of removing nitrogen from wastewater poor in biodegradable organic carbon, is the combination of partial nitritation and anoxic ammonium oxidation (anammox), as in the one-stage oxygen-limited autotrophic nitrification/denitrification (OLAND) process. Since anoxic ammonium-oxidizing bacteria grow very slowly, maximum biomass retention in the reactor is required. In this study, a lab-scale sequencing batch reactor (SBR) was used to develop granular, rapidly settling biomass. With SBR cycles of one hour and a minimum biomass settling velocity of 0.7 m/h, OLAND granules were formed in 1.5 months and the nitrogen removal rate increased from 50 to 450 mg N L−1 d−1 in 2 months. The granules had a mean diameter of 1.8 mm and their aerobic and anoxic ammonium-oxidizing activities were well equilibrated to perform the OLAND reaction. Fluorescent in-situ hybridization (FISH) demonstrated the presence of both β-proteobacterial aerobic ammonium oxidizers and planctomycetes (among which anoxic ammonium oxidizers) in the granules. The presented results show the applicability of rapidly settling granular biomass for one-stage partial nitritation and anammox.

scholarly journals N2O emission and bacterial community dynamics during realization of the partial nitrification process

RSC Advances ◽  
2018 ◽  
Vol 8 (43) ◽  
pp. 24305-24311 ◽  
Author(s):  
Xiaolin Liu ◽  
Shou-Qing Ni ◽  
Wenshan Guo ◽  
Zhibin Wang ◽  
Hafiz Adeel Ahmad ◽  
...  
Keyword(s):  
Microbial Community ◽  
Bacterial Community ◽  
Greenhouse Gas ◽  
Community Dynamics ◽  
N2o Emission ◽  
Partial Nitrification ◽  
Community Succession ◽  
Bacterial Community Dynamics ◽  
Nitrification Process ◽  
Microbial Community Succession

In this study, greenhouse gas emissions and microbial community succession during the realization of the partial nitrification (PN) process were studied.

N2O emission in partial nitritation-anammox process

2020 ◽  
Vol 31 (1) ◽  
pp. 28-38 ◽  
Author(s):  
Li Li ◽  
Yu Ling ◽  
Haiyan Wang ◽  
Zhaosheng Chu ◽  
Guokai Yan ◽  
...  
Keyword(s):  
N2o Emission ◽  
Partial Nitritation ◽  
Anammox Process

NOB suppression in partial nitritation-anammox (PNA) process by discharging aged flocs: Performance and microbial community dynamics

Chemosphere ◽  
2019 ◽  
Vol 227 ◽  
pp. 26-33 ◽  
Author(s):  
Jialin Li ◽  
Liang Zhang ◽  
Yongzhen Peng ◽  
Shenhua Yang ◽  
Xiaoling Wang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Community Dynamics ◽  
Partial Nitritation ◽  
Microbial Community Dynamics
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