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Chattanooga's Moccasin Bend Wastewater Treatment Plant includes an aging UNOX high purity oxygen activated sludge system. The original pitched blade turbine aerators and associated instrumentation are in need of replacement. The City awarded a contract for the oxygenation system replacement which involved the furnishing of unique, up-pumping, low speed surface aerators manufactured by Mixing & Mass Transfer Technologies, Inc. The project included witnessed, ASCE clean water factory testing to demonstrate satisfaction of performance guarantees by the manufacturer for oxygen transfer and maximum power draw. Factory tests were conducted at the Lightnin test facility in October, 2002. Results showed that the aerators were capable of standard aeration efficiencies in excess of 4 pounds oxygen per brake horsepower in the test tank. The aerators satisfied the clean water performance guarantees and will provide significant power savings for the operation of the City's treatment facility.
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Document Type: Research Article

Publication date: 2003-01-01

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