Method of contaminated soil remediation and apparatus therefor

Details Method of contaminated soil remediation and apparatus therefor Method of contaminated soil remediation and apparatus therefor

1988-11-04

1990-08-28

Raduazo, Henry E.

Plant husbandry

Heating or sterilizing separated earth

110226, 110228, F23G 504

Patent

active

049514172

ABSTRACT:
A method and apparatus for on-site remedial soil restortation activity of a work site contaminated with volatile organic compounds. Soil is removed from the ground and hauled to an initial feed hopper whereat it is conveyed to an inlet end of a hollow rotating cylinder having plural flights therein for effecting a moving of the contaminated soil lengthwise of the rotating cylinder toward an outlet end. The soil is heated as it tumbles about in the cylinder and the volatile organic compounds (VOCs) are volatilized inside the rotating cylinder. The soil exiting the outlet end of the cylinder is thence recirculated through the rotating cylinder and thereafter fed to a conveying mechanism, whereat the cleaned soil is delivered to a selected location. The hot gases are scrubbed to remove therefrom any organics, acids and phosgenes and, if present, soil fines. The now cleansed gases are thereafter allowed to escape into the atmosphere as clean air.

REFERENCES:
patent: 4280415 (1981-07-01), Wirguin et al.
patent: 4351250 (1982-08-01), Chartand
patent: 4504222 (1985-03-01), Christian
patent: 4544374 (1985-10-01), Mallele
patent: 4606283 (1986-08-01), DesOrmeaux
patent: 4738206 (1988-04-01), Noland
patent: 4782625 (1988-11-01), Gerken
patent: 4815398 (1989-03-01), Keating et al.

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