Ultraviolet disinfection of drinking water. 1. Communication: Inactivation of E. coli and coliform bacteria.
The inactivation of E. coli and coliform bacteria by UV rays was tested in a laboratory unit. The strains investigated were E. coli ATCC 11229, C. freundii ATCC 8090, E. cloacae ATCC 13047 and K. pneumoniae ATCC 4352. The irradiation dose was determined by a modified potassium ferrioxalate actinometer according to Calvert and Pitts. In consequence with the investigations E. cloacae ATCC 13047 proved to be the most UV resistant and K. pneumoniae ATCC 4352 to be the most UV sensitive microorganism.
Hygiene-Institut, Universität Bonn.
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Zemke
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Podgorsek
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Schoenen
D015169:Colony Count, Microbial; D004203:Disinfection / Q000379:methods*; D004307:Dose-Response Relationship, Radiation; D004755:Enterobacteriaceae / Q000528:radiation effects*; D004926:Escherichia coli / Q000528:radiation effects*; D013242:Sterilization / Q000379:methods*; D014466:Ultraviolet Rays; D014871:Water Microbiology