Formation of Aerobic Granules with Domestic Sewage
Publication: Journal of Environmental Engineering
Volume 132, Issue 6
Abstract
The use of aerobic granules in wastewater treatment can reduce the land area that is needed for the treatment of sewage. Until now granulation has been mainly studied using artificial wastewater. Studying the possibility of forming aerobic granules on domestic sewage in a sequencing batch reactor was a logical step in the scaling-up process and development of this technology. Therefore, aerobic granulation was studied using presettled sewage as influent. After of operation at high chemical oxygen demand (COD) loading heterogeneous aerobic granular structures were observed, with a sludge volume index after settling of and an average diameter of . Applying a high COD load was found to be a critical factor for the formation of aerobic granules on this type of influent. Therefore short cycle times and concentrated wastewater are preferred to form granules in a sequencing batch reactor when low strength wastewater is used. The nutrient removal was not optimized in this study.
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Acknowledgments
This research was funded by the Dutch Foundation for Water Research (STOWA, Grant No. UNSPECIFIEDTNW99.262) and STW (Grant No. UNSPECIFIEDDPC5577) and is in cooperation with DHV-Water, The Netherlands.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 132 • Issue 6 • June 2006
Pages: 694 - 697
Copyright
© 2006 ASCE.
History
Received: Jan 6, 2005
Accepted: Sep 22, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
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