Research Article
Aug 1971
Downflow Bubble Contact Aeration
Authors: Richard E. Speece, M.ASCE, Marcos Madrid, AM.ASCE, and Kenneth Needham, AM.ASCEAuthor Affiliations
Publication: Journal of the Sanitary Engineering Division
Volume 97, Issue 4
Abstract
A simple system has been developed to efficiently absorb commercial oxygen and air into water. It consists of passing water down through a submerged cone-shaped hood. Oxygen or air is injected into the hood. The water velocity entering the smaller, top end of the hood is greater than the buoyant velocity of the bubbles. The water velocity leaving the larger, open bottom is less than the buoyant velocity of the bubbles. Thus, the bubbles are trapped inside the hood for efficient absorption. Oxygen absorption in excess of 90% was achieved with very low power input. The system has potential application in activated sludge, river reaeration, fish hatcheries, yeast production and hypolimnion aeration.
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Information
Published In
Journal of the Sanitary Engineering Division
Volume 97 • Issue 4 • August 1971
Pages: 433 - 441
Copyright
© 1971 American Society of Civil Engineers.
History
Published in print: Aug 1971
Published online: Feb 12, 2021
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Authors
Affiliations
Richard E. Speece, M.ASCE
Prof. of Environmental Health Engrg., Univ. of Texas at Austin, Austin, Tex.
Marcos Madrid, AM.ASCE
Commissioned Officer, U.S. Air Force, Colorado Springs, Colo.
Kenneth Needham, AM.ASCE
Commissioned Officer, U.S. Air Force, Fort Worth, Tex.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.