The role of physical separation processes in a proposed physicochemical soil washing system at Fernald
- Fernald Environmental Restoration Management Corp., Cincinnati, OH (United States)
A soil washing pilot plant to treat soils at the US Department of Energy (DOE) owned Fernald Environmental Management Project (FEMP), was designed based on extensive bench-scale testing. The system`s design incorporated a combination of physical separation and chemical extraction processes and was tested on two soils. The textural composition of the two soils was approximately 20% sand, 60% silt, and 20% clay. Since this grain size distribution was not considered optimum for physical separation techniques, the soil washing pilot plant had to be designed with selected equipment to provide specific soil size fractions during processing operations. A trommel, vibrating screen deck, centrifuge, and attrition scrubber were used in the system to selectively separate specific soil size fractions at 4.75, 2, 0.3, and 0.02 millimeters (mm). The centrifuge was designed to take the less than 0.3 mm soil slurry from the screen deck and produce a particle size of 0.02 mm. The centrifuge produced a high solids stream that averaged greater than 70% solids for both soils. These 0.02 to 0.3 mm soil solids from the centrifuge were combined with the 0.3 to 4.75 mm soil solids from the screen deck and processed through the attrition scrubber. The data collected from the pilot-plant operation was used to aid in the design of a full-scale system and was instrumental in formulating full-scale process operations and the selection of equipment.
- OSTI ID:
- 78161
- Report Number(s):
- CONF-950201-; ISBN 0-87339-279-5; TRN: IM9531%%212
- Resource Relation:
- Conference: Annual meeting and exhibition of the Minerals, Metals and Materials Society (TMS), Las Vegas, NV (United States), 12-16 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of Separation processes: Heavy metals, ions and minerals; Misra, M. [ed.] [Univ. of Nevada, Reno, NV (United States)]; PB: 302 p.
- Country of Publication:
- United States
- Language:
- English
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