System for enhanced destruction of hazardous wastes by in situ v

Details System for enhanced destruction of hazardous wastes by in situ v System for enhanced destruction of hazardous wastes by in situ v

1989-12-05

1991-06-18

Taylor, Dennis L.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

405129, 405258, F02D 300

Patent

active

050245562

ABSTRACT:
The present invention comprises a system for promoting the destruction of volatile and/or hazardous contaminants present in waste materials during in situ vitrification processes. In accordance with the present invention, a cold cap (46) comprising a cohesive layer of resolidified material is formed over the mass of liquefied soil and waste (40) present between and adjacent to the electrodes (10, 12, 14, 16) during the vitrification process. This layer acts as a barrier to the upward migration of any volatile type materials thereby increasing their residence time in proximity to the heated material. The degree of destruction of volatile and/or hazardous contaminants by pyrolysis is thereby improved during the course of the vitrification procedure.

REFERENCES:
patent: 4376598 (1983-03-01), Brouns et al.
patent: 4957393 (1990-09-01), Buelt et al.

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