Record Display for the EPA National Library Catalog

RECORD NUMBER: 1945 OF 2069

Main Title Treatment alternatives for controlling chlorinated organic contaminants in drinking water,
Author Speed, Mark A. ; Barnard, A. ; Arber, R. P. ; Budd, G. C. ; Johns, F. J.
CORP Author Thornton, CO. ;Arber (R.P.) Associates, Denver, CO.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Publisher Water Engineering Research Laboratory, Office of Research and Development,
Year Published 1987
Report Number EPA/600/2-87/011
Stock Number PB87-145751
Additional Subjects Potable water ; Water treatment ; Chlorine organic compounds ; Contaminants ; Pilot plants ; Concentration(Composition) ; Water pollution control ; Drinking water
Holdings
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB87-145751 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 196 pages ; 28 cm
Abstract
A pilot plant study was conducted by the City of Thornton, Colorado, to evaluate techniques for controlling chlorinated organic compounds formed in drinking water as a result of breakpoint, or free, chlorination. The pilot plant was operated for 46 months using the raw water sources available to the City's 20-mgd Columbine Water Treatment Plant. The treatment techniques evaluated included conventional coagulation and sedimentation, adsorption of organic precursors on powdered activated carbon (PAC), adsorption of chlorinated organic compounds on granular activated carbon (GAC), and alternative methods of disinfection, including the use of chloramines and chlorine dioxide in addition to the present practice of breakpoint chlorination. The effectiveness of the alternatives were assessed with respect to formation or removal of total trihalomethane (TTHM) and total organic halogen (TOX). In addition, the alternative disinfectants were evaluated for biocidal effectiveness. Based on the study findings, a process that employs chlorine dioxide in combination with chloramination was selected for full-scale evaluation.
Notes
EPA/600/2-87/011. Jan. 1987. NTIS: PB87-145751. Microfiche.