TECHNICAL NOTES
Feb 1, 1995
Weir Aeration: Models and Unit Energy Consumption
Authors: Ning H. Tang, N. Nirmalakhandan, and R. E. SpeeceAuthor Affiliations
Publication: Journal of Environmental Engineering
Volume 121, Issue 2
Abstract
A broad weir-aeration model was derived to predict downstream dissolved oxygen (DO) over a wide range of upstream DO concentrations and fall heights. This model was then used to construct a three-dimensional (3D) surface of downstream DO for a range of upstream DO concentrations and fall heights. A 3D surface for kWhr per ton of DO absorbed was constructed for a range of upstream DO concentrations and fall heights. This shows the asymptotic rise in energy per ton of DO absorbed as higher downstream DO concentrations are realized. The energy consumption per ton of DO absorbed for weir aeration is below that for surface aeration and above that for fine bubble diffusers, for downstream DO concentrations of 0–8 mg/L.
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References
1.
Butts, T. A., and Evans, R. L.(1983). “Small stream channel dam aeration characteristics.”J. Envir. Engrg., ASCE, 109(3), 555–573.
2.
Butts, T. A. (1988). “Development of design criteria for sidestream elevated pool aeration stations.”Contract Rep. 452, Metropolitan Sanitary Dist. of Greater Chicago, Illinois State Water Survey (SWS) Div., Chicago, Ill.
3.
McCutcheon, S. C. (1989). Water quality modeling volume I—transport and surface exchange in rivers. CRC Press, Inc., Boca Raton, Fla.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 121 • Issue 2 • February 1995
Pages: 196 - 199
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Feb 1, 1995
Published in print: Feb 1995
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Authors
Affiliations
Ning H. Tang
Prof., Civ. Engrg. Dept., Univ. of Puerto Rico, Mayaguez, PR 00680.
N. Nirmalakhandan
Assoc. Prof., Civ. Engrg. Dept., New Mexico State Univ., Las Cruces, NM 88003.
R. E. Speece
Centennial Prof., Civ. Engrg. Dept., Vanderbilt Univ., Nashville, TN 37235.
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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.
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