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Appl Environ Microbiol. 1967 May; 15(3): 533-536
Copyright © 1967 American Society for Microbiology. All Rights Reserved.

Survival of Poliovirus in Flowing Turbid Seawater Treated with Ultraviolet Light

Gulf Coast Marine Health Sciences Laboratory, U.S. Public Health Service, Dauphin Island, Alabama 36528

ABSTRACT

The effectiveness of a model ultraviolet (UV) radiation unit for treating flowing turbid seawater contaminated with poliovirus was determined. At a turbidity of 70 ppm, the observed survival ratios ranged from 1.9 x 10^-3 (99.81% reduction) to 1.5 x 10^-4 (99.98% reduction) at flow rates ranging from 25 to 15 liters/min; no virus was recovered at flow rates of 10 and 5 liters/min. At a turbidity of 240 ppm, the observed survival ratios ranged from 3.2 x 10^-2 (96.80% reduction) to 2.1 x 10^-4 (99.98% reduction) at flow rates ranging from 25 to 5 liters/min. As expected, turbidity had an adverse influence on the effectiveness of UV radiation; however, by adjusting the flow rate of the seawater through the treatment unit, adequate disinfection was shown to be predictable.

¹ Present address: 2722 Beacon Hill, Ann Arbor, Mich. 48104.