Modeling Full-Scale Diffused Aeration Systems

by Terry L. Johnson, (M.ASCE), Black & Veatch, Kansas City, United States,
Ross E. McKinney, (Hon.M.ASCE), Black & Veatch, Kansas City, United States,



Document Type: Proceeding Paper

Part of: Critical Issues in Water and Wastewater Treatment

Abstract:

The purpose of this research was to show the direct relationship of the oxygen mass transfer coefficient (K_La_T) to mixing, and to investigate the impacts of mixing on dissolved oxygen saturation concentration (Cs) in diffused aeration systems. Furthermore, the findings reveal a high correlation of K_La_T to mixing and to the type and orientation of diffused aeration systems, whereas Cs is dependent upon only the theoretical surface saturation and diffuser depth.

Subject Headings: Oxygen transfer | Dissolved oxygen | Diffusion (fluid) | Aeration | Mass transfer | Diffusion | Water treatment

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