BIOMIXER® Unit Impact at the Ash Creek WWTP

Fredric H. Avers

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BIOMIXER® Unit Impact at the Ash Creek WWTP

Abstract

The city of Azle, TX operates an oxidation ditch for their wastewater treatment. The effluent discharge parameters for the Ash Creek WWTP were meeting limits but the plant had high sludge volume indexes (SVI's). It was thought the inadequate mixing and low dissolved oxygen (DO) levels were contributing to the poor sludge settling. A BIOMIXER® unit was installed in the oxidation ditch for increased DO, better mixing, and improved redundancy for their brush aerators. New tubular blades with fine pore membranes were installed, which improved the oxygen transfer with the added benefit of improved nitrification.

The city of Azle, TX operates an oxidation ditch for their wastewater treatment. The effluent discharge parameters for the Ash Creek WWTP were meeting limits but the plant had high sludge volume indexes (SVI's). It was thought the inadequate mixing and low dissolved oxygen (DO) levels were contributing to the poor sludge settling. A BIOMIXER® unit was installed in the oxidation ditch for...

Author(s)

Fredric H. Avers

SourceProceedings of the Water Environment Federation

SubjectSession 115: Innovative Technology Forum II

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Jan, 2008

ISSN1938-6478

SICI1938-6478(20080101)2008:7L.8495;1-

DOI10.2175/193864708790893873

Volume / Issue2008 / 7

Content sourceWEFTEC