Development of a Model for the ABF/AS Process

by Julian Sandino, 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


A modelling approach has been established for the activated biofiltration/activated sludge (ABF/AS) process. This approach indicates that ABF/AS systems can be considered as a variation of the activated sludge process, in which the biocell functions as a high-rate reactor, providing oxygen transfer and contact between soluble organics in the wastewater and the biomass recycled from the downstream aeration basin. This modelling approach provides for the first time a tool for the rational (rather than empirical) design of new ABF/AS facilities, as well as for the operation of existing systems.

Subject Headings: Activated sludge | Wastewater management | Oxygen transfer | Filtration | Water quality | Industrial wastes | Water treatment

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