Oxygen and Carbon Requirements for Biological Nitrogen Removal Processes Accomplishing Nitrification, Nitritation, and Anammox

2014 ◽  
Vol 86 (3) ◽  
pp. 204-209 ◽  
Author(s):  
Glen T. Daigger
Keyword(s):  
Nitrogen Removal ◽  
Biological Nitrogen Removal ◽  
Removal Processes ◽  
Biological Nitrogen

A Short Review of Wastewater Biological Treatment at Low C/N ratio

2014 ◽  
Vol 962-965 ◽  
pp. 1490-1494
Author(s):  
Jian Zheng Li ◽  
Shuai Shi
Keyword(s):  
Carbon Source ◽  
Nitrogen Removal ◽  
Biological Treatment ◽  
Carbon Sources ◽  
Short Review ◽  
Biological Nitrogen Removal ◽  
Removal Processes ◽  
Biological Nitrogen ◽  
Low Nitrogen ◽  
Wastewater Biological Treatment

Low nitrogen removal efficiency caused by the lack of carbon source in low C/N ratio wastewater restricts the wastewater biological treatment. Advances in wastewater biological treatment at low C/N ratio are reviewed in the paper from three aspects, including modifying traditional biological nitrogen removal process, developing novel biological nitrogen removal processes and optimizing traditional carbon source and developing new types of carbon sources. The mechanisms, advantages, and applications of these processes are also summarized and analyzed.

Effects of silver nanoparticles on biological nitrogen removal processes

2012 ◽  
Vol 65 (7) ◽  
pp. 1298-1303 ◽  
Author(s):  
E. Jeong ◽  
S. R. Chae ◽  
S. T. Kang ◽  
H. S. Shin
Keyword(s):  
Silver Nanoparticles ◽  
Nitrogen Removal ◽  
Aquatic Ecosystems ◽  
Wastewater Treatment Plants ◽  
Inhibitory Effect ◽  
Continuous Operation ◽  
Biological Nitrogen Removal ◽  
Ag Nps ◽  
Removal Processes ◽  
Biological Nitrogen

The effects of silver (Ag) nanoparticles (NPs) on activated sludge in a biological nitrogen removal (BNR) process were investigated under aerobic and anoxic conditions. We show that nitrification was more vulnerable to Ag NPs exposure than denitrification at the same Ag NPs concentration. In continuous operation of the BNR process, a higher inhibitory effect on nitrification was attributed to a smaller size of Ag NPs. About 70–90% of the Ag NPs supplied were embedded in the sludge matrix but 10–30% of the Ag NPs remained in the supernatant. This indicates that significant amounts of Ag NPs could be discharged from wastewater treatment plants and potentially impact on aquatic ecosystems.

scholarly journals A proposed nomenclature for biological processes that remove nitrogen

2017 ◽  
Vol 3 (1) ◽  
pp. 10-17 ◽  
Author(s):  
Max Weißbach ◽  
Craig S. Criddle ◽  
Jörg E. Drewes ◽  
Konrad Koch
Keyword(s):  
Nitrogen Removal ◽  
Biological Nitrogen Removal ◽  
Biological Processes ◽  
Removal Processes ◽  
Biological Nitrogen

A consistent terminology is proposed to resolve present inconsistencies and to facilitate distinct communication about biological nitrogen removal processes.

scholarly journals N2O emission and control strategy in different wastewater treatment processes

2019 ◽  
Vol 118 ◽  
pp. 04029 ◽  
Author(s):  
Ying Lv ◽  
Shoubin Zhang ◽  
Yanming Yang ◽  
Yutian Liu ◽  
Kang Xie ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Control Strategy ◽  
Treatment Process ◽  
N2o Emission ◽  
Biological Nitrogen Removal ◽  
Wastewater Treatment Process ◽  
Related Field ◽  
Removal Processes ◽  
Biological Nitrogen

N2O (Nitrous oxide) is a strong greenhouse gas, and wastewater treatment process is one of the important artificial sources of N2O. Controlling N2O production and discharge in wastewater treatment process is beneficial to alleviate the greenhouse effect. Based on the mechanism of N2O production in biological nitrogen removal process, emission characteristics and influencing factors of N2O in three traditional biological nitrogen removal processes, A/A/O, SBR and oxidation ditch, and two new biological nitrogen removal processes, SBBR and CANON, have been reviewed. Furthermore, a control strategy for slowing the generation and release of N2O is proposed, which provides a reference for researchers in related field.

Capabilities of Biological Nitrogen Removal Processes from Wastewater

1991 ◽  
Vol 23 (4-6) ◽  
pp. 669-679 ◽  
Author(s):  
M. Henze
Keyword(s):  
Activated Sludge ◽  
Nitrogen Content ◽  
Nitrogen Removal ◽  
Organic Nitrogen ◽  
Biological Nitrogen Removal ◽  
Effluent Quality ◽  
Removal Processes ◽  
Biological Nitrogen ◽  
Soluble Organic Nitrogen

Biological denitrification of wastewater is a widespread technology for nitrogen removal from wastewater. Activated sludge technology is dominating over biofilm processes in practice. Recirculation and alternating processes are used to the same degree. The typical effluent quality that can be achieved on a long-term average is 4–10 mg/l of total nitrogen. Under certain circumstances effluent concentrations of 2–3 mg N/l can be obtained. Soluble organic nitrogen and nitrate are the dominating compounds in the effluent. Of these two, the soluble organic nitrogen content is difficult to control.

Conventional and Novel Biological Nitrogen Removal Processes for Nitrogen Removal from Food Industries Wastewater

2019 ◽  
pp. 45-82
Author(s):  
Ghazaleh Mirbolouki Tochaei ◽  
Mehrdad Farrokhi ◽  
Mehrdad Moslemzadeh ◽  
Saeid Ildari ◽  
Mostafa Mahdavianpour
Keyword(s):  
Nitrogen Removal ◽  
Biological Nitrogen Removal ◽  
Food Industries ◽  
Removal Processes ◽  
Biological Nitrogen
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