Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Strengths and Weaknesses of Using C-t Values to Evaluate Disinfection Practice.
Author Hoff, J. C. ;
CORP Author Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1987
Report Number EPA/600/D-87/012;
Stock Number PB87-146221
Additional Subjects Potable water ; Disinfection ; Mathematical models ; Contaminants ; Microorganisms ; Water treatment ; Reaction kinetics ; Chemical reactions ; Chlorine ; Ozone ; Drinking water ; Giardia lambia ; Chloramines ; Chlorine oxide(CLO2)
Library Call Number Additional Info Location Last
NTIS  PB87-146221 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 21p
Disinfection of drinking water has been used for many years for the prevention of waterborne disease through inactivation of pathogenic microorganisms. Concerns about waterborne disease outbreaks caused by the protozoan Giardia lamblia, the cysts of which are very resistant to inactivation, and the need to more precisely control the disinfection process to reduce formation of potentially hazardous chemical byproducts have made it necessary to more closely examine the biocidal aspects of drinking water disinfection. The use of mathematical concepts based on microbial inactivation kinetics to predict disinfectant concentration and contact times needed to inactivate specific proportions of various pathogens and indicator species has received increasing attention as an approach to better control of the disinfection process. The report describes the use of these concepts, the problems in extrapolation from the available data and in application of laboratory disinfection data to field conditions.