Record Display for the EPA National Library Catalog

RECORD NUMBER: 5 OF 15

OLS Field Name OLS Field Data
Main Title Hydraulic Studies and Cleaning Evaluations of Ultraviolet Disinfection Units.
Author Kreft, P. ; Scheible, O. K. ; Venosa, A. ;
CORP Author Montgomery (James M.), Inc., Pasadena, CA. ;HydroQual, Inc., Mahwah, NJ.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1986
Report Number EPA-68-03-1821; EPA/600/J-86/298;
Stock Number PB87-174942
Additional Subjects Disinfection ; Ultraviolet lamps ; Cleaning ; Waste water ; Ultraviolet radiation ; Hydraulics ; Evaluation ; Quartz ; Polymers ; Schematic diagrams ; Flow rate ; Ultrasonics ; Fluorohydrocarbons ; Reprints ; Quartz tubes
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB87-174942 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/21/1988
Collation 12p
Abstract
Various types of operating ultraviolet disinfection reactor designs were evaluated for hydraulic characteristics and cleaning requirements. The fluorocarbon polymer tube designs promote plug-flow behavior because of their relatively high length-to-diameter ratio. Hydraulic evaluations of two different types of relatively current quartz tube designs demonstrated significant short-circuiting. Historically, quartz tube units have been designed with some form of accessory cleaning device to reduce fouling. The accessory cleaning devices, either mechanical wipers or ultrasonics, were marginally effective and periodic chemical cleaning is also required.