Method for separating and recovering volatilizable contaminants

Details Method for separating and recovering volatilizable contaminants Method for separating and recovering volatilizable contaminants

1986-05-19

1987-12-29

Cintins, Ivars

Liquid purification or separation

Processes

Separating

34 77, 34 79, 55 59, 55 74, 55 85, 55 97, 110346, 134 251, 203 40, 203 41, F26B 304

Patent

active

047159650

ABSTRACT:
A method for separating volatilizable contaminants from soil by introducing the soil into a rotary aggregate dryer through which a working gas indirectly heated to between 750.degree. F. and 1800.degree. F. is drawn to vaporize the contaminants, and for recovering the contaminants for environmentally sound disposal or recycling by downstream treatment of the effluent drawn off from the dryer. The downstream treatment includes cooling the effluent to condense and precipitate out a substantial portion of the contaminants and passing the effluent through activated carbon.

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Webster, David M., "Enclosed Thermal Soil Aeration for Removal of Volatile Organic Contamination", Journal of the Air Pollution Control Assoc., vol. 36, No. 10 (Oct. 1986), pp. 1156-1163.
"Soil Aeration Pilot Study Work Plan", Canonie Engineers, Project CH 84-130, (Oct. 1985).
D. Hazaga, S. Fields and G. P. Clemons, "Thermal Treatment of Solvent Contaminated Soils," Alternative Technology, 1984, pp. 404-406.

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