Oxygen Transfer in High-Speed Surface Aeration Tank for Wastewater Treatment: Full-Scale Test and Numerical Modeling
Publication: Journal of Environmental Engineering
Volume 135, Issue 8
Abstract
Oxygen transfer is one of the key processes in the bioreactor. Herein a computational fluid dynamics model for the oxygen transfer in high-speed surface aeration tank has been developed and validated through a full-scale aeration test. The test results indicate that the oxygen transfer mainly comes from the spray water in air and that the gas entrainment by the plunging of spray water and the surface reaeration in the aeration tank contribute little to the total oxygen transfer in high-speed surface aerator. A simple method was proposed to measure the oxygen transfer rate for high-speed surface aerator.
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Acknowledgments
This work was supported by the fund from the Ministry of Science and Technology of the People’s Republic of China (Grant No. UNSPECIFIED2006BAC19B02). The writers are grateful to Mr. Chengfa Xu, Anhui GuoZhen Environmental Protection Sci. and Tech. Co. Ltd. for his help in experiments; to Professor Binjia Xiao of Institute of Plasma Physics, Chinese Academy of Sciences, for helpful discussions; and to Mr. Xiaoyu Yang of Shanghai Hi-key Technology Corporation Ltd. for technical supports.CAS
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 135 • Issue 8 • August 2009
Pages: 684 - 691
Copyright
© 2009 ASCE.
History
Received: Apr 22, 2008
Accepted: Nov 12, 2008
Published online: Jul 15, 2009
Published in print: Aug 2009
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