Application of Numerical Models in the Design of Clarifiers

by J. A. McCorquodale, Univ of Windsor, Windsor, Canada,
S. P. Zhou, Univ of Windsor, Windsor, Canada,

Document Type: Proceeding Paper

Part of: Critical Issues in Water and Wastewater Treatment


In this study, a numerical model of a circular clarifier was applied to reveal the effects of the water depth on the hydraulic and removal efficiency. The velocity and solids concentration fields at different time steps during tank operation were predicted. The model accounts for a number of practical conditions including sludge storage, density variations, settling characteristics, turbulence, ratio of return activated sludge (RAS) withdraw and tank geometry variations at full scale.

Subject Headings: Numerical models | Hydraulic models | Clarifiers | Activated sludge | Water storage | Waste storage | Sludge

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