| Main Title |
Treatment and recovery of fluoride and nitrate industrial wastes : phase II / |
| Author |
Staebler, Christian J.,
|
| CORP Author |
Grumman Aerospace Corp., Bethpage, N.Y.;Industrial Environmental Research Lab.-Cincinnati, Ohio. |
| Publisher |
United States Environmental Protection Agency, Industrial Environmental Research Laboratory, Office of Research and Development ; for sale by the National Technical Information Service, |
| Year Published |
1978 |
| Report Number |
EPA 600/2-78-048; EPA-S-800680; {EPA/600/2-78/048 |
| Stock Number |
PB-281 159 |
| OCLC Number |
03922543 |
| ISBN |
pbk. |
| Subjects |
Factory and trade waste ;
Fluorides ;
Nitrates ;
Industrial Waste
|
| Additional Subjects |
Water pollution control ;
Metal finishing ;
Fluorides ;
Nitrates ;
Ion exchange resins ;
Calcium oxides ;
Calcium fluorides ;
Design criteria ;
Performance evaluation ;
Centrifugation ;
Sludges ;
Fertilizers ;
Solid waste disposal ;
Pilot plants ;
Laboratory equipment ;
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-2-78-048 |
|
Headquarters Library/Washington,DC |
07/21/2014 |
| ELBD ARCHIVE |
EPA 600-2-78-048 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 600-2-78-048 |
repository copy |
AWBERC Library/Cincinnati,OH |
03/07/2016 |
| ESAD |
EPA 600-2-78-048 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
| NTIS |
PB-281 159 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
xi, 71 pages : illustrations, figures, tables ; 28 cm. |
| Abstract |
Laboratory and pilot-scale techniques to treat selected metal-finishing solutions and rinse waters containing fluorides and nitrates were developed and successfully demonstrated. Lime-treatment parameters were optimized for various fluoride and nitrate influent levels. Ion-exchange techniques reduced the fluoride and nitrate concentrations of rinse waters to three and ten parts per million, respectively. Pilot-scale centrifugal techniques to separate precipitated calcium fluoride and metal hydroxide sludges were developed. The nitrate concentration of centrifuged effluents was reduced from 28,000 to less than five parts per million by passing the effluents through a thin-film, mechanically aided evaporator. Fluoride concentration was reduced from 117,000 to less than one part per million. The potential feasibility of using calcium fluoride sludge as a strength-maintaining additive for concrete was shown. Greenhouse tests indicated that concentrated calcium nitrate recovered from mechanically aided evaporation is a beneficial and practical plant fertilizer. Economic and production scale-up plans for process solution and rinse water treatment are also presented. |
| Notes |
"March 1978." Includes bibliographical references (page 59). EPA Project No. Contract Number: S800680. |
