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Main Title Formation and Removal of Halogenated Hydrocarbons in Drinking Water: A Case Study at Huron, South Dakota.
Author Harms, Leland L. ; Looyenga, Robert W. ;
CORP Author South Dakota School of Mines and Technology, Rapid City.;Environmental Protection Agency, Denver, CO. Region VIII.
Year Published 1977
Report Number EPA-R-008128010; EPA-908/3-77-001;
Stock Number PB80-159718
Additional Subjects Water treatment ; Halogen organic compounds ; Potable water ; South Dakota ; Sampling ; Chloroform ; Chloroethanes ; Carbon tetrachloride ; Bromoform ; Concentration(Composition) ; Field tests ; Laboratory equipment ; Chemical analysis ; Water analysis ; Sources ; Design criteria ; Chlorination ; Disinfection ; pH ; Huron(South Dakota) ; Methane/bromo-dichloro ; Methane/chloro-dibromo
Library Call Number Additional Info Location Last
NTIS  PB80-159718 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 57p
Abstract During the past few years, over 180 organic chemicals have been identified in drinking water across the United States. A group of these compounds known as trihalomethanes, are formed when chlorine reacts with organic substances found naturally in most surface waters. A nation-wide EPA study of 80 cities in 1975 found that Huron, South Dakota's drinking water had one of the highest concentrations of trihalomethanes encountered. This project was funded in an effort to assist Huron with its problem. Samples were collected from the water treatment process at Huron. These samples were tested for the same six organic compounds used by EPA in the 1975 survey. High levels of chloroform and bromodichloromethane were found to be formed during the treatment process. The haloform reaction was found to be very pH dependent and changing the point of application of the prechlorine dose reduced chloroform in the effluent by 75%. Total haloforms in the drinking water could be lowered further if the effluent pH could be lowered to a near neutral pH. Additional aftergrowth of the chlorinated hydrocarbons occurred in the distribution system.
PUB Date Free Form Jan 77
Category Codes 13B; 68D
NTIS Prices PC A04/MF A01
Primary Description 908/00
Document Type NT
Cataloging Source NTIS/MT
Control Number 323776945
Origin NTIS
Type CAT