Record Display for the EPA National Library Catalog
RECORD NUMBER: 286 OF 1368
|OLS Field Name||OLS Field Data|
|Main Title||Design scale-up suitability for air-stripping columns /|
|Author||Wallman, Harold. ; Cummins, M. D.|
|CORP Author||Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab. ;Jacobson (Nathan L.), Chester, CT. ;Brewster, NY.|
|Publisher||Water Engineering Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,|
|Subjects||Strippers (Chemical technology)|
|Additional Subjects||Organic compounds ; Water supply ; Water pollution control ; Columns(Process engineering) ; Design criteria ; Pilot plants ; Volatility ; Column packings ; Mathematical models ; Chlorine organic compounds ; Ethylene ; Acceptability ; Mass transfer ; Temperature ; Graphs(Charts) ; Air stripping ; Ethylene/trichloro ; Ethylene/dichloro ; Ethylene/tetrachloro|
|Collation||115 pages ; 28 cm|
Air-stripping in a packed column is sometimes used to remove volatile organic compounds from contaminated water supplies. Since the design engineer frequently uses data from a pilot air-stripping column to design a full-scale system, the suitability of such design scale-up was investigated. A total of 48 experimental runs was made in packed columns of four different diameters (6,12,24, and 57 in.) at air-to-water ratios ranging from 5:1 to 50:1. Water from the Village of Brewster, NY, well fields (contaminated with PCE, TCE and cis-1,2 dichloro-ethylene) was used. Various packing types (1/2, 1 and 3 in. saddles, 2 in. TRIPACKS) were used in the experimental runs. Generally, it was found that the mass transfer coefficient increased with column diameter, i.e., mass transfer coefficients obtained from a pilot column tend to be conservative.
"January 1986." "Cooperative agreement no. CR-810247-01." "This study was conducted in cooperation with The Village of Brewster, New York." Microfiche.