Specifying and Evaluating Aeration Equipment

by Henry H. Benjes, Jr.,
Ross E. McKinney,

Serial Information: Journal of the Sanitary Engineering Division, 1967, Vol. 93, Issue 6, Pg. 55-64

Document Type: Journal Paper


One of the most complex aspects of designing a modern activated sludge waste water treatment system is concerned with the selection of optimum aeration equipment. A performance evaluation for initial operating conditions has been developed which can be extrapolated to the design operating conditions. The performance evaluation requires determination of operating air flow rates, temperature, mixed liquor suspended solids, oxygen demand rates and dissolved oxygen. The application of the performance evaluation technique to the aeration equipment furnished for the Grand Island, Nebr., activated sludge plant is described. The experience obtained from the performance evaluation at Grand Island has pointed to certain necessary refinements in the evaluation technique. A sample aeration equipment performance specification is appended incorporating these refinements.

Subject Headings: Aeration | Equipment and machinery | Activated sludge | Air flow | Air temperature | Oxygen demand | Dissolved oxygen | Islands

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