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First U.S. Carrousel Racetrack Sewage Plant: simple, economical, excellent removeal.

Serial Information: Civil Engineering—ASCE, 1979, Vol. 49, Issue 5, Pg. 65-67


Document Type: Feature article

Abstract:

Campbellsville, Kentucky will be the first community in the U.S. to use a promising new sewage treatment process�� the so-called Carrousel process. The process uses turbine aerators both to aerate the wastewater and move it around a racetrack-shaped tank. The process achieves excellent removals of both BOD and ammonia. Among reasons the process was chosen for Campbellsville: (1)Ability to handle widely varying influents; (2)need to meet tough effluent standards; (3)desire to keep investment in sludge handling facilities to a minimum (the sludge coming out of the process is already digested); and (4)desire to use power efficiently (aerators can be set at different speeds). Other reasons for selecting Carrousel: (1)It had the lowest first cost; (2)required the least energy to operate; (3)was odor free; (4)eliminated primary clarifiers and anaerobic digesters; (5)eliminated need for flow equalization; and (6)consistently yielded high effluent quality with minimum operator attention.

Subject Headings: Aeration | Sludge | Sewage | Effluents | Water tanks | Wastewater treatment plants | Wastewater treatment

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