Record Display for the EPA National Library Catalog
RECORD NUMBER: 48 OF 79| Main Title | Removal of trihalomethane precursors by direct filtration and conventional treatment / | |||||||||||
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| Author | Edzwald, James K. | |||||||||||
| CORP Author | Clarkson Coll. of Technology, Potsdam, NY. Dept. of Civil and Environmental Engineering.;Municipal Environmental Research Lab., Cincinnati, OH. | |||||||||||
| Publisher | U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory, | |||||||||||
| Year Published | 1984 | |||||||||||
| Report Number | EPA/600/2-84/068; EPA-R-807034 | |||||||||||
| Stock Number | PB84-163278 | |||||||||||
| Subjects | Trihalomethanes ; Water--Purification--Filtration | |||||||||||
| Additional Subjects | Water treatment ; Filtration ; Coagulation ; Potable water ; Performance evaluation ; Pilot plants ; Polymers ; Halomethanes | |||||||||||
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| Collation | 243 pages ; 28 cm | |||||||||||
| Abstract | This research examined direct filtration for the removal of trihalomethane (THM) precursors. Direct filtration pilot plant results were compared with the performance of two full scale conventional type water treatment plants. Two different water sources were studied - the Grasse River, a highly colored supply and the Glenmore Reservoir, a low turbidity, protected upland supply. Direct filtration with cationic polymers as sole coagulants is an effective treatment process. Both conventional plants employed alum as the primary coagulant. This study showed that UV (254 nm) absorbance is a good surrogate parameter for predicting raw water NPTOC and THM precursors, for monitoring direct filtration performance for removals of these parameters, and for monitoring removals of these parameters by the two conventional water plants. |
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| Notes | "March 1984." "Cooperative Agreement No. CR807034." Microfiche. |