| Main Title |
Evaluating Sedimentation and Various Filter Media for Removal of 'Giardia' Cysts. |
| Author |
Logsdon, G. S. ;
Thurman, V. C. ;
Frindt, E. S. ;
Stoecker, J. G. ;
|
| CORP Author |
Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div. ;Cincinnati Univ., OH. Coll. of Engineering. |
| Year Published |
1985 |
| Report Number |
EPA/600/J-85/009; |
| Stock Number |
PB85-176576 |
| Additional Subjects |
Antracite ;
Sedimentation ;
Giardia ;
Water pollution control ;
Cysts ;
Performance evaluation ;
Bacteria ;
Alums ;
Concentration(Composition) ;
Effectiveness ;
Filter ;
Turbidity ;
Reprints ;
Giardia cysts
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB85-176576 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
8p |
| Abstract |
The primary purpose of the pilot study described in this article was to evaluate the efficiency of sedimentation and of coarse anthracite media for removing Giardia cysts. Removal of cysts by sedimentation was observed to range from 65 to 93 percent and was generally similar to removal of turbidity. The coarse anthracite media produced water of inferior quality when alum was the only coagulant, but its performance was found to be improved by the use of a high-molecular-weight, slightly anionic polymer. Cyst concentrations appeared to be higher than usual during the initial phase of a filter run, indicating that a filter-to waste period may be desirable. The authors conclude that effective control of Giardia cysts depends on informed application of the multiple-barrier concept. |
