| Main Title |
Rock filters for removal of algae from lagoon effluents / |
| Author |
Swanson, Gregory R., ;
Williamson, Kenneth J.
|
| Other Authors |
|
| CORP Author |
Oregon State Univ., Corvallis. Dept. of Civil Engineering.;Municipal Environmental Research Lab., Cincinnati, OH. |
| Publisher |
Municipal Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Available to the public through the National Technical Information Service. |
| Year Published |
1980 |
| Report Number |
EPA-600/2-80-038; EPA-R-805416 |
| Stock Number |
PB80-190077 |
| OCLC Number |
06541864 |
| Subjects |
Algae--Control ;
Sewage lagoons ;
Sewage--Purification--Filtration
|
| Additional Subjects |
Filtration ;
Fluid filters ;
Algae ;
Water pollution control ;
Lagoons(Ponds) ;
Rocks ;
Cost effectiveness ;
Removal ;
Settling ;
Rates(Per time) ;
Mathematical models ;
Pilot plants ;
Separation ;
Field tests ;
Oregon ;
Veneta(Oregon)
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EHAM |
TD753.S8 1980 |
|
Region 1 Library/Boston,MA |
04/29/2016 |
| EJBD |
EPA 600-2-80-038 |
c.1 |
Headquarters Library/Washington,DC |
01/14/2014 |
| ELBD ARCHIVE |
EPA 600-2-80-038 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ESAD |
EPA 600-2-80-038 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB80-190077 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
x, 79 pages : illustrations, charts ; 28 cm. |
| Abstract |
The objective of this project was to show that rock filtration was an effective, low cost unit process for removing algae from lagoon effluents and correspondingly upgrading lagoon treatment. Sedimentation is the primary mechanism of algal removal within rock filter. The settling rates of three species of algae common to lagoons were measured as varying from 0.02 to 0.3 m/day, depending on species and temperature. Settling rates of algae from the Veneta, Oregon lagoon were about 0.05 m/day. A mathematical model of the sedimentation mechanism was constructed based on discrete settling theory. A full-scale horizontal flow operating rock filter designed for a maximum hydraulic loading of 0.28 cu m/cu m (1.6 days detention time) located at Veneta, Oregon was evaluated. Weekly average BOD5 and TSS did not exceed 20 mg/l. With improved flow characteristics a pilot scale rock filter achieved similar results for a short period of testing at twice the hydraulic flow. |
| Notes |
"Oregon State University." "Wastewater Research Division, Municipal Environmental Research Laboratory." "March 1980." Includes bibliographical references. "Grant no. R-805416." |
