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Description: W13-Proceedings
CFD Modeling of Activated Sludge Mixing in an Oxidation Ditch Conversion
Abstract
The treatment process at the City of Woodland's Water Pollution Control Facility (WPCF) is being enhanced to improve nitrogen removal. The existing oxidation ditches will be converted to a once through treatment process. Computational fluid dynamics (CFD) modeling was used to evaluate mixing of solids with the converted tank, using a solids transport equation within the computation. The type, location, and orientation of mixers in anoxic regions were evaluated to ensure solids remained in suspension and well mixed. The aerated zone mixing was evaluated with a multi-phase model to verify the injected air would mix the complete trapezoidal cross section, including through a 180-degree bend.
The treatment process at the City of Woodland's Water Pollution Control Facility (WPCF) is being enhanced to improve nitrogen removal. The existing oxidation ditches will be converted to a once through treatment process. Computational fluid dynamics (CFD) modeling was used to evaluate mixing of solids with the converted tank, using a solids transport equation within the computation. The type,...
Author(s)
Edward WickleinKaty RogersRob HuntAndre GharagozianMark CockePaul Roy
SourceProceedings of the Water Environment Federation
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Oct, 2013
ISSN1938-6478
DOI10.2175/193864713813692720
Volume / Issue2013 / 10
Content sourceWEFTEC
Copyright2013
Word count116

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