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Development Of Scale Factors For Clarifier Design Based On Batch Settling Data, Robert K. Anderson

Retrospective Theses and Dissertations

Traditionally, batch settling tests have been employed to determine the values of the settling parameters V₀ and K of the Vesilind equation which represents activated sludge settling velocity as a function of solids concentration. It remains unresolved how closely batch settling tests describe settling in full-scale clarifiers.

An experimental procedure was developed to determine scale factors between batch settling and full-scale solids flux curves. An experimental protocol was determined for full-scale clarifier operation, including specific criteria of necessary instrumentation and operational flexibility. Several graphical techniques were evaluated and a procedure was selected to determine a scale factor between batch …