Record Display for the EPA National Library Catalog

RECORD NUMBER: 686 OF 910

OLS Field Name OLS Field Data
Main Title Radon Removal Using Point-of-Entry Water Treatment Techniques.
Author Kinner, N. E. ; Malley, J. P. ; Clement, J. A. ;
CORP Author New Hampshire Univ., Durham. Environmental Research Group.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher Oct 90
Year Published 1990
Report Number EPA/600/2-90/047;
Stock Number PB91-102020
Additional Subjects Activated carbon treatment ; Water treatment ; Radon ; Aeration ; Blowers ; Removal ; Efficiency ; Ground water ; Water supply ; Economic factors ; Ion exchanging ; Iron ;
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=30000H9G.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB91-102020 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/04/1991
Collation 132p
Abstract
The purpose of the EPA Cooperative Agreement was to evaluate the performance of POE granular activated carbon (GAC), and diffused bubble and bubble place aeration systems treating a ground water supply containing radon (35,620 + or - 6,717 pCi/L). The pattern of loading to the units was designed to simulate daily demand in a household. Each of the systems was evaluated with respect to three primary factors: radon removal efficiency, potential problems, and economics. The radon removal efficiencies of the POE GAC units gradually deteriorated over time from 99.7% to 79% for the GAC without pretreatment and 99.7% to 85% for the units preceded by ion exchange. The bubble plate and diffused bubble POE units were very efficient (99%) at removing radon from the water. The resilience is primarly due to the high air to water ratios supplied by the aeration blowers. One major problem associated with the aeration techniques is iron oxidation/precipitation.