Oxygen Transfer by Air Injection in Horizontal Pipe Flow
Publication: Journal of Environmental Engineering
Volume 139, Issue 6
Abstract
Dissolved oxygen (DO) concentration is an important water quality parameter. This paper studies the increase of DO concentration in water by air injection into a horizontal pipe flow. A 3D computational fluid dynamics model was employed to compute the water and bubble mixture flow with a DO transport model. Experiments were also conducted to validate the mathematical model. A relative saturation coefficient relationship was developed with air bubble volume fraction and travel time. An oxygen absorption efficiency is defined, and its relationship with the inlet DO concentration, air bubble volume fraction, and travel time was discussed.
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Acknowledgments
The study is financed by the National Natural Science Foundation of China (Grant No. 51009123 and 50809065). We would like to thank X. Cao and L. Wang for their support in the experiment.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 139 • Issue 6 • June 2013
Pages: 908 - 912
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Apr 25, 2012
Accepted: Nov 9, 2012
Published online: Nov 12, 2012
Published in print: Jun 1, 2013
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