Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Development of a Rationally Based Design Protocol for the Ultraviolet Light Disinfection Process.
Author Scheible, O. K. ;
CORP Author HydroQual, Inc., Mahwah, NJ.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1987
Report Number EPA/600/J-87/005;
Stock Number PB87-176970
Additional Subjects Disinfection ; Ultraviolet radiation ; Design criteria ; Mathematical models ; Waste water ; Water treatment ; Bacteria ; Ultraviolet lamps ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB87-176970 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 10p
A protocol is demonstrated for the design and evaluation of ultraviolet (UV) disinfection systems based on a mathematical model. The disinfection model incorporates the system's physical dimensions, the residence time distribution of the reactor and dispersion characteristics, the UV intensity within the reactor, and the quality of the wastewater being treated. The data requirements for calibration of the model are discussed. An example is then given, using information from a pilot study at the Port Richmond Water Pollution Control Plant, New York, New York. Reactor hydraulics are characterized in terms of the dispersion coefficient and the dispersion number. Intensity is computed by the point source summation method; this is adjusted by attenuation factors to account for surface fouling of the UV lamp enclosures and the aging of the lamps. Water quality is related to the UV absorbance coefficient, the initial bacterial density, and the suspended solids (SS). The bacteria inactivation rate is related to the intensity of the reactor, while bacteria occluded by particulate matter, and unaffected by UV, are described as a function of the SS concentration. (Copyright (c) J. Water Pollution Control Federation, 59(1):25-31, January 1987.)