DocumentCode
3338749
Title
Notice of Retraction
Aerobic Granulation in a Modified Continuous Flow System
Author
Jiaheng Zhou ; Su Wei ; Jun Li ; Mei He ; Hille, A. ; Horn, H.
Author_Institution
Inst. of Civil Eng. & Archit., Zhejiang Univ. of Technol., Hangzhou, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
5
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.
A modified continuous flow system in the laboratory was used for aerobic granulation. This system consists of three columns per line. The column in the middle was kept aeration any time, other two columns alternately acted as aeration and sludge settling tanks. Feast-famine, escape of granules destroying, high shear force, and selection pressure were considered in this continuous flow system. This system was in a sequence of "from left to right" and "from right to left" flowing pattern keeping a plug-flow and sludge recycle. After 40 days operation, aerobic granulation was successfully achieved. The average diameter of granules was more than 1 mm, the settling velocity was about 40 m/h, the sludge volume index after 10 minutes (SVI10) ranged from 50 to 60 mL/gMLSS. The microscopic images show relative loose and fluffy structure of granules. The average removal rate of chemical oxygen demand (COD) and NH4-N was about 96% and 94%, respectively.
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.
A modified continuous flow system in the laboratory was used for aerobic granulation. This system consists of three columns per line. The column in the middle was kept aeration any time, other two columns alternately acted as aeration and sludge settling tanks. Feast-famine, escape of granules destroying, high shear force, and selection pressure were considered in this continuous flow system. This system was in a sequence of "from left to right" and "from right to left" flowing pattern keeping a plug-flow and sludge recycle. After 40 days operation, aerobic granulation was successfully achieved. The average diameter of granules was more than 1 mm, the settling velocity was about 40 m/h, the sludge volume index after 10 minutes (SVI10) ranged from 50 to 60 mL/gMLSS. The microscopic images show relative loose and fluffy structure of granules. The average removal rate of chemical oxygen demand (COD) and NH4-N was about 96% and 94%, respectively.
Keywords
recycling; sludge treatment; NH4-N; aeration; aerobic granulation; chemical oxygen demand; feast-famine; granules; modified continuous flow system; plug-flow; selection pressure; shear force; sludge recycling; sludge settling tank; time 10 day; time 40 day; Effluents; Extracellular; Force; Inductors; Microorganisms; Microscopy; 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.2011.5781158
Filename
5781158
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