Details

Autor(en) / Beteiligte

• Tang, Ning H
• Nirmalakhandan, N
• Speece, R. E

Titel

Weir Aeration: Models and Unit Energy Consumption

Ist Teil von

• Journal of environmental engineering (New York, N.Y.), 1995-02, Vol.121 (2), p.196-199

Ort / Verlag

Reston, VA: American Society of Civil Engineers

Erscheinungsjahr

1995

Link zum Volltext

Quelle

EBSCOhost Business Source Ultimate

Beschreibungen/Notizen

• 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 kWs˙hr 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.