Abstract: Underground contamination can be treated with soil amended with oxygen gettering material. The treated soil can act as a reactive medium, creating a favorable environment to remove the contamination, such as breaking down the contamination into less harmful or harmless substances.

Abstract: Simple flow path with minimum turns for the vapor extraction flow paths can provide maximum air flow with minimal head loss, leading to higher efficiency in a thermal desorption process. Hot air vapor extraction arrangement can include large diameter vertical or horizontal trunk line or curved plate with continuous wire wrap well screens. The vapor extraction trunk can draw all vapors to the center of the soil box, which can reduce the treatment time by substantially removing condensation zone. The interior of the vapor extraction well screen and trunk can include porous material, which can reduce dust within the vapor stream, eliminate potential short circuiting in the event of a screen rupture and reduce potential explosion hazards.

Abstract: Treatment apparatus and a process for thermal desorption of hydrocarbon contaminants from excavated soil provides efficient contaminant removal by handling the soil in a thermally conductive treatment vessel that fits within an insulated treatment chamber. The soil is treated in this chamber with fresh air that is dried and electrically heated prior to contacting the treatment vessel. The dry air passes through the soil and the air mixed with contaminants is withdrawn from the chamber through piping in the treatment vessel. Excavating the soil directly into the treatment vessel allows the treated soil to be returned to the final disposition site in the same vessel, minimizing soil handling.

Abstract: Treatment apparatus and a process for thermal desorption of hydrocarbon contaminants from excavated soil provides efficient contaminant removal by handling the soil in a thermally conductive treatment vessel that fits within an insulated treatment chamber. The soil is treated in this chamber with fresh air that is dried and electrically heated prior to contacting the treatment vessel. The dry air passes through the soil and the air mixed with contaminants is withdrawn from the chamber through piping in the treatment vessel. Excavating the soil directly into the treatment vessel allows the treated soil to be returned to the final disposition site in the same vessel, minimizing soil handling.

Abstract: Treatment apparatus and a process for thermal desorption of hydrocarbon contaminants from excavated soil provides efficient contaminant removal by handling the soil in a thermally conductive treatment vessel that fits within an insulated treatment chamber. The soil is treated in this chamber with fresh air that is dried and electrically heated prior to contacting the treatment vessel.