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DEMONSTRATION BULLETIN: SOIL WASHING SYSTEM - BIOTROL, INC.
Citation:
Science Applications International Corporation. DEMONSTRATION BULLETIN: SOIL WASHING SYSTEM - BIOTROL, INC. EPA/540/M5-91/003, 1991.
Impact/Purpose:
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Description:
The three component technologies of the BioTrol Soil Washing System (BSWS). Tested in the SITE demonstration were a Soil Washer (SW), and Aqueous Treatment System (ATS), and a Slurry Bio-Reactor (SBR). The Soil Washer operates on the principle that a significant fraction of the chemicals in a contaminated soil are either physicaly or chemically bound to the cilt, clay or humic particles, and removal of those fine particles leaves the bulk of the soil (mostly sand) relatively clean. Excavated soils are screened to remove debris and mixed with water to form a slurry. The slurry is subjected to a series of intensive scrubbing and physical classification steps to scour the contaminants and silt and clay fines from the sand particles. The washed sand iis separated from the slurry, and the remaining contaminated finesd can be treated in the SBR. Contaminanted process water from the Soil Washer can be sent to the ATS to remove organics.