Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Phosphorus removal by ferrous iron and lime /
Author Alvord, E. Thomas.
Other Authors
Author Title of a Work
Alvord, E. Thomas.
CORP Author Rand Development Corporation.
Publisher [U.S. Environmental Protection Agency],
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
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 620-R-71-023 Headquarters Library/Washington,DC 05/04/2011
EJBD  EPA 620-R-71-023 Headquarters Library/Washington,DC 05/22/2014
ELBD RPS EPA 11010-EGO-01-71 repository copy AWBERC Library/Cincinnati,OH 02/02/2015
Collation viii, 71 pages : illustrations ; 28 cm.
"11010 EGO 01/71." 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.