Engineering Design Variables for the Activated Sludge Process

by Lloyd W. Weller, (F.ASCE), Chairman and Partner; Black and Veatch, Kansas City, Mo.,

Serial Information: Journal of the Environmental Engineering Division, 1980, Vol. 106, Issue 3, Pg. 473-503

Document Type: Journal Paper


This paper presents a compendium of design parameters and guidelines that are useful to the professional designer. All variations of the activated sludge process for the treatment of municipal wastes are described and compared. Advantages and disadvantages are given for each variation. Performance data for plants in the eastern part of the United States are presented. Inhibitory effects of toxic and metallic pollutants are described, Nutrient requirements of aerobic processes are quantified, and the effects of toxic and shock loads are discussed.

Subject Headings: Aerobic processes | Activated sludge | Municipal wastes | Toxicity | Parameters (statistics) | Industrial wastes | Waste treatment | Nutrient loads | United States

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