Inhibitory Effect of Salinity and Humic Acid on the Performance of Anaerobic Ammonium Oxidation Process and Recovery of Anammox Activity

2021 ◽  
Author(s):  
Chunhua He ◽  
Bing Zhang ◽  
Hua Ou ◽  
Zhenghu Hu ◽  
Wei Wang
Keyword(s):  
Humic Acid ◽  
Oxidation Process ◽  
Inhibitory Effect ◽  
Anaerobic Ammonium Oxidation ◽  
Ammonium Oxidation ◽  
Anammox Activity

Recent advances regarding the impacts of engineered nanomaterials on the anaerobic ammonium oxidation process: performances and mechanisms

2019 ◽  
Vol 6 (12) ◽  
pp. 3501-3512 ◽  
Author(s):  
Gui-Feng Li ◽  
Bao-Cheng Huang ◽  
Zheng-Zhe Zhang ◽  
Ya-Fei Cheng ◽  
Nian-Si Fan ◽  
...  
Keyword(s):  
Oxidation Process ◽  
Engineered Nanomaterials ◽  
Anaerobic Ammonium Oxidation ◽  
Ammonium Oxidation ◽  
Recent Advances

The impacts of engineered nanomaterials on the performance of the anaerobic ammonium oxidation process and their intoxication mechanisms are summarized.

Nitrogen removal with the anaerobic ammonium oxidation process

2013 ◽  
Vol 35 (8) ◽  
pp. 1145-1154 ◽  
Author(s):  
Ziye Hu ◽  
Tommaso Lotti ◽  
Mark van Loosdrecht ◽  
Boran Kartal
Keyword(s):  
Nitrogen Removal ◽  
Oxidation Process ◽  
Anaerobic Ammonium Oxidation ◽  
Ammonium Oxidation

scholarly journals Nitrate Reverses Severe Nitrite Inhibition of Anaerobic Ammonium Oxidation (Anammox) Activity in Continuously-Fed Bioreactors

2016 ◽  
Vol 50 (19) ◽  
pp. 10518-10526 ◽  
Author(s):  
Guangbin Li ◽  
Reyes Sierra-Alvarez ◽  
David Vilcherrez ◽  
Stefan Weiss ◽  
Callie Gill ◽  
...  
Keyword(s):  
Anaerobic Ammonium Oxidation ◽  
Ammonium Oxidation ◽  
Anammox Activity ◽  
Nitrite Inhibition

Anaerobic ammonium oxidation of ammonium-rich waste streams in fixed-bed reactors

2004 ◽  
Vol 49 (11-12) ◽  
pp. 77-82 ◽  
Author(s):  
C. Fux ◽  
V. Marchesi ◽  
I. Brunner ◽  
H. Siegrist
Keyword(s):  
Removal Rate ◽  
Elimination Rate ◽  
Fixed Bed ◽  
Treatment Plant ◽  
Experimental Period ◽  
Anaerobic Ammonium Oxidation ◽  
Synthetic Wastewater ◽  
Ammonium Oxidation ◽  
Fixed Bed Reactors ◽  
Anammox Activity

The feasibility of anaerobic ammonium oxidation (Anammox) in fixed-bed reactors was evaluated on laboratory and pilot scales. Using synthetic wastewater, the specific nitrogen removal rate was increased from 0.05-0.1 kgNm-3reactord-1 to 0.35-0.38 kgNm-3reactord-1 within a year (T = 22-27°C) in all applications. However, the anammox activity was seriously and repeatedly inhibited at prolonged high nitrite concentrations (e.g. six days at 30-50 gNO2-Nm-3) and recovery was always a lengthy process. But even at a moderate nitrite concentration (11 ± 10 gNO2-Nm-3), the observed specific growth rate was only 0.018 d-1 at 26.4 ± 0.8°C, which corresponds to approximately 0.025 d-1 at 30°C (doubling time: 28 days). In a second experimental period for another 250 days, one of the laboratory reactors was fed with partially nitrified sludge liquors from a domestic wastewater treatment plant (WWTP). In this case, the specific elimination rate was as high as 3.5 kgNm-3reactord-1 at 26-27°C. Independently of the feed, the average nitrogen elimination rate lay between 80-85% in all applications. An appropriate hydraulic design is essential to prevent clogging and local nitrite inhibition in fixed-bed reactors.

Enrichment of Anaerobic Ammonium Oxidation (Anammox) Bacteria for Biological Nitrogen Removal of Wastewater

2013 ◽  
Vol 62 (2) ◽  
Author(s):  
Norjan Yusof ◽  
Hanisom Abdullah ◽  
Syakirah Samsudin ◽  
Mohd Ali Hassan
Keyword(s):  
Batch Reactor ◽  
Anaerobic Ammonium Oxidation ◽  
Anammox Bacteria ◽  
Ammonium Oxidation ◽  
Leachate Treatment ◽  
16S Rrna Sequence ◽  
Bottom Part ◽  
Enrichment Cultures ◽  
Anammox Activity ◽  
Biological Nitrogen

Anaerobic ammonium oxidation (anammox) bacteria enrichment was explored for the potential application of ammonium rich wastewater removal. Samples of sludge from mature and young landfill leachate treatment plants were screened and used as inocula for anammox enrichment cultures. Enrichments were monitored for N-NH3, N-NO2- and N-NO3- to detect anammox potential activity. Six of the twelve enrichment cultures showed anammox activity after more than five months of enrichment period. All enrichment cultures that gave positive results were obtained from bottom part of sequencing batch reactor (SBR) lagoon indicating localization of anammox bacteria in anaerobic condition.  Polymerase Chain Reaction (PCR) with specific primers targeting anammox and planctomycete were able to amplify the 16S rRNA sequence for anammox bacteria under PCR optimum condition. However, only three of six positive samples were successfully sequenced. DNA sequence analysis using NCBI (BLAST) and RDP showed that the anammox bacterial sequences of the investigated samples were identified as Candidatus Kuenenia stuttgartiensis with similarity of 100% (NCBI) and 99.3% (RDP).

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