| Main Title |
Treatment of metal finishing wastes by sulfide precipitation / |
| Author |
Schlauch, R. M. ;
Epstein., Arthur C.
|
| Other Authors |
|
| CORP Author |
Permutit Company.; Metal Finishers' Foundation. |
| Publisher |
Industrial Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
| Year Published |
1977 |
| Report Number |
EPA 600/2-77-049; EPA-R-8-2914 |
| Stock Number |
PB-267 284 |
| OCLC Number |
06064717 |
| Subjects |
Metals--Finishing--Waste disposal ;
Precipitation (Chemistry) ;
Sulfides
|
| Additional Subjects |
Metals--Finishing--Waste disposal ;
Precipitation (Chemistry) ;
Sulphides ;
Water pollution control ;
Metal finishing ;
Precipitators ;
Performance evaluation ;
Precipitation(Chemistry) ;
Industrial wastes ;
Sludge ;
Iron sulfides ;
Calcium hydroxide ;
Comparisons ;
Process charting ;
Design criteria ;
Capitalized costs ;
Operating costs ;
Electroplating ;
Dewatering ;
Experimental design ;
Pilot plants ;
Complex compounds ;
Cost analysis ;
Heavy metals ;
Sludge treatment ;
Sulfex process
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA-600/2-77-049 |
|
Headquarters Library/Washington,DC |
02/28/2007 |
| ELBD ARCHIVE |
EPA-600/2-77-049 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ERAD |
EPA 600/2-77-049 |
|
Region 9 Library/San Francisco,CA |
09/17/2012 |
| ESAD |
EPA 600-2-77-049 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-267 284 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
x, 76 p. : ill. ; 28 cm. |
| Abstract |
This project involved precipitating heavy metals normally present in metal finishing wastewaters by a novel process which employs ferrous sulfide addition (Sulfex), as well as by conventional treatment using calcium hydroxide for comparison purposes. These studies consisted of laboratory jar tests and bench scale tests to determine the chemical and physical requirements for the precipitation of the heavy metals and the subsequent dewatering of the resulting sludges. Following the laboratory tests, pilot plant tests were made to confirm the validity of the laboratory test results and provide realistic operating data. As a result, it was demonstrated that Sulfex is a technically viable process that is superior to conventional hydroxide precipitation for removal of copper, cadmium, nickel, and zinc from a given influent. And, when operated in the pH 8-9.0 range, the Sulfex process will remove total chromium to a concentration which is less than or equal to that from a conventional hydroxide precipitation process. Hexavalent chromium can be removed by Sulfex in a one-step operation. The effluent quality from either process is dependent on the type and concentration of complexing agents present in the influent. |
| Notes |
EPA-600/2-77-049. Grant. no. R802924. Bibliography: p. 75. |
