Nitrogen removal pathway and dynamics of microbial community with the increase of salinity in simultaneous nitrification and denitrification process

2019 ◽  
Vol 697 ◽  
pp. 134047 ◽  
Author(s):  
Zhengang Xia ◽  
Qun Wang ◽  
Zonglian She ◽  
Mengchun Gao ◽  
Yangguo Zhao ◽  
...  
Keyword(s):  
Microbial Community ◽  
Nitrogen Removal ◽  
Simultaneous Nitrification And Denitrification ◽  
Nitrification And Denitrification ◽  
Denitrification Process

Simultaneous nitrification and denitrification in biofilters with real time aeration control

2001 ◽  
Vol 43 (1) ◽  
pp. 269-276 ◽  
Author(s):  
N. Puznava ◽  
M. Payraudeau ◽  
D. Thornberg
Keyword(s):  
Real Time ◽  
Nitrogen Removal ◽  
Simultaneous Nitrification And Denitrification ◽  
Biological Aerated Filter ◽  
Diffusion Effect ◽  
Different Depths ◽  
Nitrification And Denitrification ◽  
Aerated Filter ◽  
Denitrification Process ◽  
Aeration Control

The aim of this article is to present a new biological aerated filter (BAF) for nitrogen removal based on simultaneous nitrification and denitrification. Contrary to the systems which integrate both an aerated and a non-aerated zone to allow complete nitrogen removal in one compact or two different units (pre-denitrification and nitrification), this upflow BAF system is based on the principle of simultaneous nitrification and denitrification since the filter is completely aerated. The denitrification process is possible due to the diffusion effect which dominates biofilm processes. The real time aeration control allows us to maintain a low dissolved oxygen value (0.5 to 3 mg O2/l). In this case, the biofilm will not be fully (or less) penetrated with oxygen and denitrification will be carried out in a large part of the biofilm. Therefore, nitrification and denitrification is running simultaneously in different depths of the biofilm. By using 50% less air this BAF gave the same results (less than 20mg TN/l) on pilot plant as a classical nitrification and denitrification BAF (Toettrup et al., 1994). Less recirculation was necessary to achieve the same denitrification.

Simultaneous nitrification and denitrification using a polypyrrole/microbial cellulose electrode in a membraneless bio-electrochemical system

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 72699-72708 ◽  
Author(s):  
Hooshyar Hossini ◽  
Abbas Rezaee ◽  
Bita Ayati ◽  
Amir Hossein Mahvi
Keyword(s):  
Aqueous Solution ◽  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Simultaneous Nitrification And Denitrification ◽  
Electrochemical System ◽  
Microbial Cellulose ◽  
System P ◽  
Total Nitrogen Removal ◽  
Nitrification And Denitrification ◽  
Denitrification Process

In this study, the feasibility of ammonium and total nitrogen removal from aqueous solution using a simultaneous nitrification and denitrification process was studied in a membraneless bio-electrochemical system with a novel electrode.

scholarly journals Evaluation of a novel low-carbon to nitrogen- and temperature-tolerant simultaneously nitrifying–denitrifying bacterium and its use in the treatment of river water

RSC Advances ◽  
2018 ◽  
Vol 8 (48) ◽  
pp. 27417-27422 ◽  
Author(s):  
Peng Jin ◽  
Yinyan Chen ◽  
Zhanwang Zheng ◽  
Qizhen Du
Keyword(s):  
Low Temperature ◽  
River Water ◽  
Removal Efficiency ◽  
Nitrogen Removal ◽  
Simultaneous Nitrification And Denitrification ◽  
Low Carbon ◽  
High Nitrogen ◽  
Denitrifying Bacterium ◽  
Nitrification And Denitrification

A novel simultaneous nitrification and denitrification Klebsiella sp. exhibits high nitrogen removal efficiency under low-temperature and low C/N wastewater.

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