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 Modified |
Checkout Status |
NTIS |
PB88-202502 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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). |