Record Display for the EPA National Library Catalog

RECORD NUMBER: 27 OF 33

OLS Field Name OLS Field Data
Main Title Removal of Hepatitis A Virus and Rotavirus by Drinking Water Treatment.
Author Rao, V. C. ; Symons, J. M. ; Ling, A. ; Wang, P. ; Metcalf, T. G. ;
CORP Author Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab. ;Baylor Coll. of Medicine, Houston, TX. Dept. of Virology and Epidemiology.
Year Published 1988
Report Number EPA/600/J-88/006;
Stock Number PB88-202502
Additional Subjects Viruses ; Water treatment ; Microorganisms ; Rotaviruses ; Potable water ; Lake Houston ; Reprints ; Drinking water ; Hepatitis A virus
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB88-202502 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/04/1988
Collation 12p
Abstract
The paper presents quantitative data from a two year study on the removability of rotavirus SA11 and hepatitis A virus added exogenously to Lake Houston raw water during treatment. Processes studied on laboratory and pilot scale included coagulation, filtration, softening and disinfection. Poliovirus type 1 was included as a frame of reference for which considerable data on removal during treatment processes is available. The results indicated that: (1) Alum and iron were both efficient coagulants in the removal of rotavirus and hepatitis A virus, as they were for polioviruses; (2) Various levels of turbidity and alkalinity had no influence on the extent of virus removal; (3) Addition of a nonionic coagulant aid did not improve the performance of coagulation and as a consequence did not enhance virus removal; (4) Rota, hepatitis and polioviruses showed a greater resistance to chlorine at pH 7.5 when suspended in raw water, 15 ntu; (5) Neither rotavirus nor hepatitis virus could be detected after 10 min exposure to 0.5 mg/L free residual chlorine at pH 7.5 in finished water in bench scale studies (turbidity 0.12 ntu).