DocumentCode
3336702
Title
Notice of Retraction
Influence of C/N Ratio on Nitrogen Removal in Sequencing Batch Biofilm Reactor
Author
Yunxiao Jin ; Changhang Wu
Author_Institution
Dept. of Civil Eng., Luoyang Inst. of Sci. & Technol., Luoyang, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
4
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
The laboratory-scale fiber thread carrier sequencing batch biofilm reactor (SBBR) was developed to treat municipal wastewater with different C/N ratios. The influence of C/N ratios on nitrogen removal was evaluated under different conditions of Ttemperature=(25±1)°C, Vaeration=150 L/h, toperation=15 d, 20 d, 20 d. When the C/N ratios are 10.0, 5.0, 3.3, the average removal rates of COD were 87.2%, 92.3% and 94.3% those of NH3-N were 99.3% 99.7% and 78.1% and those of TN were 92.9% 67.3% and 48.2% respectively. The C/N ratios had little effect on the NH3-N removal, while they had greater effect on the removal of TN. When the C/N ratio was low, the removal efficiency of nitrogen decreased. In the SBBR, simultaneous nitrification and denitrification (SND) occurred throughout the study. Moreover, the level of denitrification creased with the C/N ratio creasing.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
The laboratory-scale fiber thread carrier sequencing batch biofilm reactor (SBBR) was developed to treat municipal wastewater with different C/N ratios. The influence of C/N ratios on nitrogen removal was evaluated under different conditions of Ttemperature=(25±1)°C, Vaeration=150 L/h, toperation=15 d, 20 d, 20 d. When the C/N ratios are 10.0, 5.0, 3.3, the average removal rates of COD were 87.2%, 92.3% and 94.3% those of NH3-N were 99.3% 99.7% and 78.1% and those of TN were 92.9% 67.3% and 48.2% respectively. The C/N ratios had little effect on the NH3-N removal, while they had greater effect on the removal of TN. When the C/N ratio was low, the removal efficiency of nitrogen decreased. In the SBBR, simultaneous nitrification and denitrification (SND) occurred throughout the study. Moreover, the level of denitrification creased with the C/N ratio creasing.
Keywords
bioreactors; industrial waste; nitrogen; wastewater treatment; C/N ratio; COD average removal rate; denitrification; laboratory-scale fiber thread carrier; municipal wastewater; nitrogen removal; sequencing batch biofilm reactor; Carbon; Effluents; Inductors; Microorganisms; Nitrogen; Temperature measurement; Wastewater;
fLanguage
English
Publisher
ieee
Conference_Titel
Bioinformatics and Biomedical Engineering, (iCBBE) 2011 5th International Conference on
Conference_Location
Wuhan
ISSN
2151-7614
Print_ISBN
978-1-4244-5088-6
Type
conf
DOI
10.1109/icbbe.2011.5781048
Filename
5781048
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