Record Display for the EPA National Library Catalog
RECORD NUMBER: 24 OF 190
|OLS Field Name||OLS Field Data|
|Main Title||Correlations Among Trihalomethane (THM) and Total Organic Halide (TOX) Formation in Water Treatment Facilities.|
|Author||Singer, P. C. ; Chang, S. D. ;|
|CORP Author||North Carolina Univ. at Chapel Hill.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.|
|Additional Subjects||Chlorination ; Water treatment ; Water pollution ; Humus ; Chemical reactions ; Halogen organic compounds ; Methane ; pH ; Chlorine organic compounds ; Humic acids ; Acetic acid ; Correlation ; Surface waters ; Absorption ; Coagulation ; Filtration ; Sedimentation ; Reprints ; Raw water ; Halomethane|
In determining the extent to which correlations exist among certain parameters (TOX, TTHM, TOC, UV absorbance, THM formation potential, and TOX formation potential), samples of raw water and treated water, including samples from the distribution systems, were collected from 12 full-scale systems in six states. The ratio of TTHM/TOX in surface waters treated by conventional coagulation, sedimentation, and filtration, at near neutral pH values (approximately 3:1), corresponds closely with the THMFP/TOXFP ratio in raw waters after a chlorine contact of 7 days at pH 7.