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 Study on Rapid Start-up of Anammox Process under the Influence of Magnetic Field

2018 ◽  
Vol 53 ◽  
pp. 03051
Author(s):  
Jiabin Wang ◽  
Cong Yu ◽  
Shoubin Zhang ◽  
Tianhang Li ◽  
Dong Zhang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Nitrogen Removal ◽  
Oxidation Process ◽  
Removal Rate ◽  
Ammonia Nitrogen ◽  
Anaerobic Ammonium Oxidation ◽  
Ammonia Oxidizing Bacteria ◽  
Ammonium Oxidation ◽  
Relationship Analysis ◽  
Start Up

In order to study the rapid start-up technology of the anaerobic ammonium oxidation process, a comparison test of no magnetic field and magnetic field was performed in two identical ASBR reactors R1 and R2 respectively. The results show that both reactors can successfully start Anammox. The R2 start-up period (75d) of the applied magnetic field is shortened by 15% compared with the unloaded magnetic field R1 start-up period (90d); the R2 ammonia-nitrogen removal rate is 97% higher than that of 95% of R1. The quantitative relationship analysis between NH4+-N, NO2--N and NO3--N shows that the change of R2 ratio is closer to the theoretical value, which can better improve the activity of microbial enzymes and accelerate the enrichment of ammonia oxidizing bacteria in the reactor. It is beneficial to nitrogen removal and R2 can quickly start the anaerobic ammonium oxidation process.

Synergistic Nitrogen Removal by Anaerobic Ammonium Oxidation-Denitrification Integrated Reactor of Immobilized Microbe

2011 ◽  
Vol 236-238 ◽  
pp. 949-953
Author(s):  
Zheng Wen Huang ◽  
Yong Gang Zeng ◽  
Bo Yu
Keyword(s):  
Nitrogen Removal ◽  
Oxidation Process ◽  
Ph Value ◽  
Removal Rate ◽  
Nitrogen Concentration ◽  
Anaerobic Ammonium Oxidation ◽  
Ammonium Oxidation ◽  
Good State ◽  
High Nitrogen Concentration ◽  
Mass Concentrations

The upflow anaerobic immobilized microbe reactor of the anaerobic ammonium oxidation process (ANAMMOX) was used in treatment of high nitrogen concentration organic wastewater, which was made to study the effect of synergistic nitrogen removal by ANAMMOX–denitrification. The experimental results showed that the mass concentrations of NH4+-N and NO － 2-N in the influent had no obvious influence on the synergistic nitrogen removal in opportune range. When the mass concentrations of NH4+-N and NO－2-N in the influent were kept at 301-800 mg/L, the removal rates of NH4+-N, NO－2-N and TN were 93.3 %, 98.6 % and 90.3 % respectively. When the influent COD was kept at 800-850 mg/L, COD had almost no influence on the synergistic nitrogen removal, and the removal rate kept at 95.7％. Meanwhile, the characteristic changes of NO－3-N, N2, pH value and organism proved that the synergism was in a good state. Introduction

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.

Anaerobic ammonium oxidation in polyvinyl alcohol and sodium alginate immobilized biomass system: a potential tool to maintain anammox biomass in application

2013 ◽  
Vol 69 (4) ◽  
pp. 718-726 ◽  
Author(s):  
Gang-Li Zhu ◽  
Jia Yan ◽  
Yong-You Hu
Keyword(s):  
Polyvinyl Alcohol ◽  
Sodium Alginate ◽  
Nitrogen Removal ◽  
Enrichment Culture ◽  
Batch Reactor ◽  
Anaerobic Ammonium Oxidation ◽  
Anammox Bacteria ◽  
Ammonium Oxidation ◽  
Gel Beads ◽  
Key Factor

Anaerobic ammonium oxidation (anammox) has been proved to be a promising nitrogen removal method for treating ammonium-rich wastewater. However, because of the low-growth rate of anammox bacteria, maintenance of a sufficient amount of anammox biomass in reactor became a key factor in application. Gel immobilization is an efficient method to prevent biomass from being washed out and to promote hyper-concentrated cultures. This study focused on a nitrogen removal process by anammox enrichment culture immobilized in polyvinyl alcohol and sodium alginate (PVA-SA) gel beads. The rapid startup of reactor demonstrated that gel entrapment was supposed to be a highly effective technique for immobilizing anammox bacteria. The anammox bacteria present in the enrichment were identified to be Jettenia-like species (>98%). Moreover, the effect of hydraulic retention time (HRT), pH, and temperature on immobilized anammox processes were investigated. The effect of pH and temperature on the anammox process was evidently weakened in PVA-SA immobilized gel beads, however, the effect of HRT on the anammox reaction was enhanced. Therefore, a stable operated reactor could be obtained in an anaerobic sequencing batch reactor, which proved gel immobilization was an excellent method to maintain the biomass in anammox reactor for application.

scholarly journals Dominance ofCandidatus saccharibacteriain SBRs achieving partial denitrification: effects of sludge acclimating methods on microbial communities and nitrite accumulation

RSC Advances ◽  
2019 ◽  
Vol 9 (20) ◽  
pp. 11263-11271 ◽  
Author(s):  
Wang Xiujie ◽  
Wang Weiqi ◽  
Zhang Jing ◽  
Wang Siyu ◽  
Li Jun
Keyword(s):  
Energy Consumption ◽  
Microbial Communities ◽  
Nitrogen Removal ◽  
Low Energy ◽  
Anaerobic Ammonium Oxidation ◽  
Nitrite Accumulation ◽  
Ammonium Oxidation ◽  
Low Energy Consumption

Partial denitrification (NO3−-N → NO2−-N) was combined with anaerobic ammonium oxidation (ANAMMOX) to achieve nitrogen removal with a low C/N ratio and low energy consumption.

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