DocumentCode
3334177
Title
Notice of Retraction
Chemical Optimization in the Co-Precipitation Phosphorus Removal Process
Author
Zhang Zhibin ; Li Yi ; Wei Leilei ; Lv Yufeng ; Xu Xiaoming ; Wu Daoji ; Wang Weiliang
Author_Institution
Coll. of Environ. & Municipal Eng., Shandong Archit. Univ., Jinan, 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.
For short of carbon resource used for denitrification and phosphorus removal, poor biological phosphorous removal is achieved in lower concentration municipal wastewater treatment plants. Chemical addition should be taken into account in these occasions in order to meet the discharge requirement. In this study, 5 different chemicals was added to the co-precipitation treatment process in order to optimize chemical species,namely FeCl3·6H2O, FeSO4·7H2O, AlCl3·6H2O, PAC and PSF. The results showed that ferrous-based chemicals had higher phosphorus removal efficiencies than that of aluminium based chemicals, and ferrous sulfate had the highest phosphorous removal efficiency. The optimal ferrous sulfate dosage is 1.2:1 (molar ratio Fe/TP), and at this chemical dosage more than 85% soluble total phosphorus (DTP) removal efficiency is achived. In addition, while ferrous sulfate dosing ratio was lower than 1.6:1(molar ratio Fe/TP), Fe/TP had significantly positive correlation with TP and PO43- in the effluent.
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.
For short of carbon resource used for denitrification and phosphorus removal, poor biological phosphorous removal is achieved in lower concentration municipal wastewater treatment plants. Chemical addition should be taken into account in these occasions in order to meet the discharge requirement. In this study, 5 different chemicals was added to the co-precipitation treatment process in order to optimize chemical species,namely FeCl3·6H2O, FeSO4·7H2O, AlCl3·6H2O, PAC and PSF. The results showed that ferrous-based chemicals had higher phosphorus removal efficiencies than that of aluminium based chemicals, and ferrous sulfate had the highest phosphorous removal efficiency. The optimal ferrous sulfate dosage is 1.2:1 (molar ratio Fe/TP), and at this chemical dosage more than 85% soluble total phosphorus (DTP) removal efficiency is achived. In addition, while ferrous sulfate dosing ratio was lower than 1.6:1(molar ratio Fe/TP), Fe/TP had significantly positive correlation with TP and PO43- in the effluent.
Keywords
aluminium compounds; chemical hazards; effluents; iron compounds; phosphorus; precipitation; wastewater treatment; AlCl3H2O; FeCl3H2O; FeSO4H2O; aluminium based chemicals; biological phosphorous removal; carbon resource; chemical dosage; chemical optimization; chemical species; coprecipitation treatment process; denitrification; discharge requirement; effluent; ferrous sulfate; ferrous-based chemicals; molar ratio; municipal wastewater treatment plant; soluble total phosphorus; Biology; Carbon; Chemicals; Effluents; Iron; Wastewater; Wastewater treatment;
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.2011.5780890
Filename
5780890
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