scholarly journals Autotrophic nitrogen removal in membrane-aerated biofilms: Archaeal ammonia oxidation versus bacterial ammonia oxidation

2016 ◽  
Vol 302 ◽  
pp. 535-544 ◽  
Author(s):  
Yiwen Liu ◽  
Huu Hao Ngo ◽  
Wenshan Guo ◽  
Lai Peng ◽  
Yuting Pan ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Ammonia Oxidation ◽  
Autotrophic Nitrogen Removal ◽  
Archaeal Ammonia Oxidation

scholarly journals Long-Term Effects of Trace NO2 Addition on the Performance of CANON SBR

2021 ◽  
Vol 261 ◽  
pp. 02011
Author(s):  
Cai Qing ◽  
Ding Jiajia
Keyword(s):  
Removal Efficiency ◽  
Electron Acceptor ◽  
Nitrogen Removal ◽  
Ammonia Oxidation ◽  
Removal Rate ◽  
Long Term Effects ◽  
Total Nitrogen Removal ◽  
Ammonia Oxidation Rate ◽  
Autotrophic Nitrogen Removal

Two parallel CANON Sequencing Bach reactors were started, and 67ppm NO2 was added into Sequencing Bach Reactor 2 while nothing was added to Sequencing Bach Reactor 1. The total nitrogen removal efficiency of SBR1 was 65.5±5.0% at a removal rate of 0.198±0.023 kgN/m3/d. Meanwhile, the SBR2 with NO2 addition showed a removal efficiency of 67.5±6.2%, with a removal rate of 0.277±0.017 kgN/m3/d. The SBR2 had a higher removal efficiency and rate than the SBR1. The continuous addition of trace NO2 into the CANON Sequencing Bach Reactor allows conventional aerobic ammonia oxidation with O2 as the electron acceptor and ammonia oxidation of with NO2 as the electron acceptor to take place simultaneously, thus improving the ammonia oxidation rate and autotrophic nitrogen removal performance. China Library Classification No.: X703.1 Literature Label: A Article No.:

Autotrophic nitrogen removal at low temperature

2011 ◽  
Vol 63 (6) ◽  
pp. 1282-1288 ◽  
Author(s):  
J. R. Vázquez-Padín ◽  
I. Fernández ◽  
N. Morales ◽  
J. L. Campos ◽  
A. Mosquera-Corral ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Ammonia Oxidation ◽  
Nitrogen Loading ◽  
Anammox Bacteria ◽  
Ammonia Oxidizing Bacteria ◽  
Oxygen Penetration ◽  
Removal Capacity ◽  
Do Concentration ◽  
Canon Process ◽  
Autotrophic Nitrogen Removal

In this work the autotrophic nitrogen removal was carried out at moderately low temperatures using two configurations: a) two-units one comprising a SHARON reactor coupled to an Anammox SBR and b) single-unit one consisting of a granular SBR performing the CANON process. At 20°C the two-units system was limited by the Anammox step and its nitrogen removal capacity was around ten times lower than the CANON system (0.08 g N/(L d) versus 1 g N/(L d)). When the CANON system was operated at 15°C the average removed nitrogen loading rate decreased to 0.2 g N/(L d). The CANON system was operated in order to limit the ammonia oxidation rate to avoid nitrite inhibition of Anammox bacteria. Since both, temperature and dissolved oxygen (DO) concentration regulate ammonia oxidizing bacteria activity, once the temperature of the reactor is decreased the DO concentration must be decreased to avoid the deeper oxygen penetration inside the granule which could cause inhibition of Anammox bacteria by oxygen and/or nitrite.

The presence of organic matter during autotrophic nitrogen removal: Problem or opportunity?

2016 ◽  
Vol 166 ◽  
pp. 102-108 ◽  
Author(s):  
Elisa A. Giustinianovich ◽  
José-Luis Campos ◽  
Marlene D. Roeckel
Keyword(s):  
Organic Matter ◽  
Nitrogen Removal ◽  
Autotrophic Nitrogen Removal

The effect and biological mechanism of granular sludge size on performance of autotrophic nitrogen removal system

2018 ◽  
Vol 29 (4) ◽  
pp. 339-347 ◽  
Author(s):  
Xing Ya-juan ◽  
Ji Jun-yuan ◽  
Zheng Ping ◽  
Wang Lan ◽  
Ghulam Abbas ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Granular Sludge ◽  
Biological Mechanism ◽  
Autotrophic Nitrogen Removal ◽  
Removal System

Bioelectrochemical Partial-Denitrification Coupled with Anammox for Autotrophic Nitrogen Removal

2022 ◽  
pp. 134667
Author(s):  
Yue Wu ◽  
Yuxuan Wan ◽  
Lili Tian ◽  
Sitong Liu ◽  
Yujun Pan ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Autotrophic Nitrogen Removal
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