Gas Transfer During Bubbler Destratification of Reservoirs
Publication: Journal of Environmental Engineering
Volume 131, Issue 5
Abstract
In this paper, dimensional analysis has been carried out to derive general equations that predict: the total gas transferred to the ambient reservoir water from an air bubbler, total volume entrained, and total energy consumed for a known or equivalent linear stratification. The equations are tested by comparison with a one-dimensional bubbler model developed by the authors. It is shown that the oxygen transfer to the water column can be significant if small bubbles are used. The mechanical destratification efficiency (%), destratification time per unit surface area , oxygen dissolution efficiency (%), and oxygen transferred per unit input energy are examined as functions of bubble size. It is concluded that an average bubble radius of should be considered for design purposes. However, if oxygen transfer from the bubbler is not considered important, then a bubble size of up to is acceptable for destratification purposes.
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Acknowledgments
This work was carried out under the Asian Institute of Technology–ONDEO Services collaborative agreement. A PhD scholarship awarded to the first writer by the French Ministry of Foreign Affairs is gratefully acknowledged. The writers gratefully acknowledge the three anonymous reviewers of this paper for their valuable comments and suggestions.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 131 • Issue 5 • May 2005
Pages: 702 - 715
Copyright
© 2005 ASCE.
History
Received: Sep 24, 2002
Accepted: Jun 29, 2004
Published online: May 1, 2005
Published in print: May 2005
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