Main Title |
Phosphorus removal by ferrous iron and lime / |
Author |
Alvord, E. Thomas.
|
Other Authors |
|
CORP Author |
Rand Development Corporation. |
Publisher |
United States Environmental Protection Agency, Water Quality Office, |
Year Published |
1971 |
Report Number |
EPAWQO-11010-EGO-01/71; EPA 620-R-71-023 |
OCLC Number |
00363855 |
Subjects |
Sewage--Purification ;
Flocculation ;
Metals--Pickling--By-products ;
Phosphates ;
Lake County (Ohio) ;
Ohio--Lake County
|
Additional Subjects |
Sewage--Purification ;
Flocculation ;
Metals--Pickling--By-products ;
Phosphates
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 620-R-71-023 |
|
Headquarters Library/Washington,DC |
05/22/2014 |
ELBD ARCHIVE |
EPA 620-R-71-023 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD RPS |
EPA 11010-EGO-01-71 |
repository copy |
AWBERC Library/Cincinnati,OH |
02/02/2015 |
|
Collation |
viii, 71 pages : illustrations, figures, tables ; 28 cm. |
Notes |
"January, 1971." "Research conducted by the Rand Development Corporation and the County of Lake, Painsville, Ohio." Includes bibliographical references (pages 63-66). |
Contents Notes |
Spent pickle liquor, as a source of ferric ion, was added to primary treatment facilities and found to be effective in removing more than 60% of the phosphorus contained in the sewage. When advanced means for more complete removal of the insolubilized phosphates are available, removals in excess of 90% are indicated. In addition, overall suspended solids removals averaged 61.5% and BOD and COD removals averaged 61.6 and 55.3 percent during a 23 month test period. Required iron dosage ranged from the theoretical minimum of 2.7 to a maximum of approximately 3.1 weights of ferrous iron per weight of phosphorus. The weight increase in sludge solids due to chemical precipitation of phosphorus was 100 lbs/million gallons/mg/liter of phosphorus in the influent. Total costs for treating a raw sewage containing 13 mg/l phosphorus are given. |