Publication Cover
Journal of Environmental Science and Health, Part A
Toxic/Hazardous Substances and Environmental Engineering
Volume 34, 1999 - Issue 9
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Original Articles

Regrowth potential of coliforms after UV disinfection of municipal wastewater

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Pages 1737-1743 | Received 25 Mar 1999, Published online: 15 Dec 2008
 

Abstract

Photoreactivation of fecal coliforms and subsequent regrowth was investigated in effluents of wastewater treatment plants using ultraviolet light as the disinfectant. Shielding of bacteria ingested in Daphnia sp in the plant outfalls was shown to be a major contributor to increased fecal coliform, E. coli, fecal streptococci and enterococci after fragmentation of the Daphnia sp due to normal dieoff. Representative fecal coliform colonies that comprised the regrowth population were identified to species with E. coli, a small fraction of the total fecal coliform population.

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