DocumentCode
3337328
Title
Notice of Retraction
Deeply Treatment of Dyeing Wastewater
Author
Zhang Xianqiu ; Dai Ying ; Du Mingxia ; Zhang Yong ; Jia Guozheng ; Wang Zhiliang
Author_Institution
Dept. of Enviromental Scinece & Eng., Nanjing Normal Univ., Nanjing, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
3
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 characteristics of Dyeing wastewater is high in colourity, high in COD concentration, difficult in degradation, difficult in biological-treatment. Conventional biological process hardly meets environmental discharge standards that are more and more stringent. In this paper, a integraded treatment process that include MgSO4-FeSO4 two-stage flocculation, 03 oxidation, membrane bioreactor and Nanofiltration was studied by experiments. The results showed that COD total removal rate was 85% by MgSO4-FeSO4 two-stage flocculation when MgSO4 and FeSO4 was congtrol at 300mg/L and 250 mg/L respectively. Ozone oxidation could not further decrease COD, but obviously rise B/C from 0.22 to 0.46 within 40 min, which very benefited biological treatment, wastewate was further treated by membrane bioreactor and COD was further down to less than 60mg/L when Hydraulic Retention Time(HRT) was 6h. Finally, the COD, colourity and colourity of water treated deeply by nanofiltration were less than 20mg/L, 5 times and 50 us/cm, which completely meets the requirement of reuse for dyeing.
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 characteristics of Dyeing wastewater is high in colourity, high in COD concentration, difficult in degradation, difficult in biological-treatment. Conventional biological process hardly meets environmental discharge standards that are more and more stringent. In this paper, a integraded treatment process that include MgSO4-FeSO4 two-stage flocculation, 03 oxidation, membrane bioreactor and Nanofiltration was studied by experiments. The results showed that COD total removal rate was 85% by MgSO4-FeSO4 two-stage flocculation when MgSO4 and FeSO4 was congtrol at 300mg/L and 250 mg/L respectively. Ozone oxidation could not further decrease COD, but obviously rise B/C from 0.22 to 0.46 within 40 min, which very benefited biological treatment, wastewate was further treated by membrane bioreactor and COD was further down to less than 60mg/L when Hydraulic Retention Time(HRT) was 6h. Finally, the COD, colourity and colourity of water treated deeply by nanofiltration were less than 20mg/L, 5 times and 50 us/cm, which completely meets the requirement of reuse for dyeing.
Keywords
biodegradable materials; biomembranes; bioreactors; dyeing; environmental degradation; flocculation; oxidation; ozone; wastewater treatment; COD concentration; FeSO4; MgSO4; biological-treatment; colourity; degradation; dyeing wastewater treatment; enviromental discharge standards; flocculation; hydraulic retention time; integraded treatment process; membrane bioreactor; nanofiltration; ozone oxidation; time 6 h; Biology; Biomembranes; Effluents; Filtration; Oxidation; Wastewater; Water pollution;
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.2011.5781081
Filename
5781081
Link To Document