System for enhanced destruction of hazardous wastes by in situ vitrification of soil
- Richland, WA
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.
- Research Organization:
- Battelle Memorial Institute, Columbus, OH (United States)
- DOE Contract Number:
- AC06-76RL01830
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- Patent Number(s):
- US 5024556
- OSTI ID:
- 867868
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
destruction
hazardous
wastes
situ
vitrification
soil
comprises
promoting
volatile
contaminants
waste
materials
processes
accordance
cold
cap
46
comprising
cohesive
layer
resolidified
material
formed
mass
liquefied
40
adjacent
electrodes
10
12
14
16
process
barrier
upward
migration
type
increasing
residence
time
proximity
heated
degree
pyrolysis
improved
course
procedure
situ vitrification
residence time
hazardous waste
waste material
waste materials
hazardous wastes
vitrification process
cold cap
heated material
type materials
enhanced destruction
type material
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