Importance of Aeration Basin Detention Time in the Activated Sludge Process

by Walter G. Bashaw, Jordan, Jones & Goulding Inc, United States,

Document Type: Proceeding Paper

Part of: Environmental Engineering


Aeration basin detention time is a key design parameter for an activated sludge system at a wastewater treatment plant. The impacts of reducing the aeration time is illustrated by a case study. In general, a shorter aeration period was demonstrated to reduce power usage for aeration and to increase waste sludge production. Although sludge handling costs increased, the net effect was a modest reduction overall in plant operating costs.

Subject Headings: Aeration | Activated sludge | Detention basins | Industrial wastes | Wastewater treatment plants | Benefit cost ratios | Sludge | Sewage

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