Record Display for the EPA National Library Catalog


Main Title Physical-chemical treatment of municipal wastes by recycled magnesium carbonate /
Author Black, A. P.,
Other Authors
Author Title of a Work
DuBose, A. T.,
Vogh, R. P.,
Publisher Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Year Published 1974
Report Number EPA/660-2-74-055; EPA-12130-HRA
Stock Number PB-239 326
OCLC Number 01496539
Subjects Water treatment plants ; Water--Purification ; Magnesium carbonate
Additional Subjects Sewage treatment ; Magnesium carbonates ; Coagulation ; Chemical removal(Sewage treatment) ; Nutrients ; Comparisons ; Phosphorus ; Nitrogen ; Calcium oxides ; Physical chemical treatment
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 660-2-74-055 c.1 Headquarters Library/Washington,DC 05/17/2013
ELBD ARCHIVE EPA 660-2-74-055 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD  EPA 660-2-74-055 AWBERC Library/Cincinnati,OH 05/17/2022
NTIS  PB-239 326 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 113 pages : illustrations ; 27 cm
The applicability to municipal wastes of the recently discovered magnesium carbonate-lime water treatment process has been investigated. A sixteen-month laboratory study was conducted and was followed by an eight-month pilot plant study. Four wastewaters with COD values varying from 200 to 1,500 mg/l were examined. Bench-scale coagulation studies designed to compare the effect of added MgCO3 with treatment by lime only showed a 0%-30% greater reduction in effluent COD residuals. Color and turbidity reduction by the magnesium-plus-lime process averaged 50%-85% greater when compared to treatment by lime only. A series of 72-hour pilot plant runs was conducted with the magnesium precipitated increased after each three day period. Effluent characteristics improved as the amount of magnesium precipitated was increased. Influent and filter effluent samples were collected every four hours and analyzed for COD, TOC, total phosphorus, alkalinity, hardness, calcium, and magnesium. Values for BOD were determined from composited samples.
"Grant 12130 HRA; Program element 1BB036; Roap/ Task 21 AZV-21." "EPA/660-2-74-005." "June 1974." Report prepared by the City of Gainesville, Florida. Includes bibliographical references (pages 109-112).