| Main Title |
Physical-chemical treatment of municipal wastes by recycled magnesium carbonate / |
| Author |
Black, A. P.,
|
| Other Authors |
|
| 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 |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| 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 |
| Abstract |
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. |
| Notes |
"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). |
