Record Display for the EPA National Library Catalog
RECORD NUMBER: 7 OF 17
|OLS Field Name||OLS Field Data|
|Main Title||Foam flotation treatment of heavy metals and fluoride-bearing industrial wastewaters /|
|Author||Wilson, David J.|
|CORP Author||Vanderbilt Univ., Nashville, Tenn.;Industrial Environmental Research Lab.-Cincinnati, Ohio. Industrial Pollution Control Div.|
|Publisher||Industrial Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,|
|Report Number||EPA/600/2-77/072; EPA-R-803564|
|Stock Number||PB-267 549|
|Subjects||Metals--Finishing--Waste disposal. ; Heavy metals. ; Fluorides.|
|Additional Subjects||Industrial waste treatment ; Flotation ; Water pollution control ; Surfactants ; Sewage treatment ; Metals ; Foaming agents ; Trace elements ; Concentration(Composition) ; Lead(Metal) ; Isotherms ; Separation ; Cadmium ; Mercury(Metal) ; Copper ; Zinc ; Arsenic ; Columns(Process engineering) ; Mathematical models ; Numerical analysis ; Fluorides ; Smelters ; Brasses ; Water treatment ; Potable water ; Heavy metals ; Froth floation ; Aluminum smelters ; Lead smelters|
|Collation||xi, 76 pages : illustrations ; 28 cm.|
Laboratory studies demonstrated that the floc foam flotation techniques are effective in removing lead, cadmium, mercury, copper, zinc, arsenic, and fluoride from dilute wastewaters to very low levels. Simulated as well as real industrial wastewaters were studied. Industrial wastewaters studied originated from primary aluminum smelters, secondary lead smelters, and brass mills. Copper, lead and arsenic are readily removed with Fe(OH)3 and sodium lauryl sulfate; fluoride and zinc, with Al(OH)3 and sodium lauryl sulfate; cadmium and mercury, with CuS and hexadecyltrimethylammonium bromide. Batch techniques as well as continuous flow systems were used; the latter proved to be more efficient. Possibility of surfactant recovery was investigated. Flotation column simulator computer program was also constructed. Floc foam flotation techniques are not suitable for treatment of wastes containing high concentrations of dissolved salts and adequate pH control is essential in most separations. Foam separation processes combine the attractive features of simplicity, economy, potential for recovery, and effective removal of pollutants at low concentrations in wastewaters.
EPA-600/2-77-072. Includes bibliographical references (pages 54-60). Microfiche.