E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
E02D 3/11 (2006.01) B09B 1/00 (2006.01) B09C 1/06 (2006.01) C03B 5/00 (2006.01) C03B 5/02 (2006.01) C10B 53/00 (2006.01) E02D 31/00 (2006.01) E21B 43/295 (2006.01)
Patent
CA 2142709
A method is disclosed according to a first and second embodiment in which a plasma arc torch is used to vitrify and remediate a site containing municipal waste, contaminated soils, resulting from a hazardous material deposit or spill, or contaminated buried objects. The process steps of the first preferred embodiment involve drilling a series of holes into the waste material mass at proper spacing, inserting and operating a plasma arc torch in each drilled hole to pyrolize, remediate and vitrify the waste materials and allowing the melted materials to cool and harden. During the process, a gaseous by-product is produced and collected in a hood which is attached to scrubbing and chemical cleaning apparatus. The resultant gases are commercially useful as fuel gas and the vitrified residue is significantly smaller in volume than the original waste material volume, thus substantially extending the useful life of the landfill site and ultimately providing a firm foundation for construction. The contaminated earthen material or subterranean deposit is pyrolyzed, melted or solidified by the plasma torch which is energized at the bottom of a cased, vertical borehole, and then gradually raised to the surface. An array of boreholes, appropriately spaced, will remediate an entire mass of contaminated material. Similarly, buried objects such as metal drums containing contaminants and underground storage tanks may be selectively remediated at their specific buried depth. Similar use is made of the plasma torch in a variation of this embodiment with the additional step of processing at selected underground locations in the borehole array to create a sealed horizontal layer, vertical cutoff walls or a sealed basin as a barrier against further leaching of contaminants into surrounding soil and groundwater. -31- Gaseous by-products of the pyrolysis process are collected, treated and processed, as appropriate.
Camacho Salvador L.
Circeo Louis J. Jr.
Camacho Salvador L.
Circeo Louis J. Jr.
Riches Mckenzie & Herbert Llp
LandOfFree
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