| Main Title |
Slow sand filter maintenance costs and effects on water quality / |
| Author |
Letterman, Raymond D. ;
Cullen, T. R.
|
| Other Authors |
|
| CORP Author |
Syracuse Univ., NY.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab. |
| Publisher |
GPO, |
| Year Published |
1985 |
| Report Number |
EPA/600/2-85/056 |
| Stock Number |
PB85-199669 |
| Subjects |
Water--Purification--Filtration ;
Water quality--New York (State) ;
Water treatment plants--New York (State)
|
| Additional Subjects |
Sand filters ;
Water treatment ;
Water pollution ;
Maintenance ;
Cost analysis ;
Operating costs ;
Pilot plants ;
Monitoring ;
Deterioration ;
Turbidity ;
Particles ;
Removal ;
Sands ;
Scraping
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB85-199669 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
124 pages : illustrations |
| Abstract |
A study was conducted to determine how slow sand filter effluent quality is affected by scraping and to quantify the labor required to operate and maintain a slow sand filter. The data were obtained by monitoring scraping and other maintenance operations at six full-size slow sand filtration plants in Central New York. The time required for filtrate quality to improve after filter scraping varied from 6 hr to 2 weeks at the slow sand filtration plants visited. In four of ten maintenance operations some quality deterioration occurred. The nature of the particulate matter in raw water apparently has an important effect on filtrate quality, and a pilot plant study should always be conducted before a slow sand filtration plant is constructed. Continuous monitoring of the turbidity of each filter effluent may be needed to determine if filter maintenance operations have a detrimental effect on treated water quality. |
| Notes |
"Final report 6/83-12/84." "May 1985." "EPA/600/2-85/056." |
