Method and apparatus for treatment of contaminated soil particle

Details Method and apparatus for treatment of contaminated soil particle Method and apparatus for treatment of contaminated soil particle

1993-09-14

1994-08-30

Taylor, Dennis L.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

405258, B09B 300, E02D 312

Patent

active

053421469

ABSTRACT:
A method and apparatus for decontaminating hydrocarbon contaminated soil particles comprises an upwardly directed conveyor which passes the soil through shredding knives to breakup the soil into a plurality of particles having a preselected maximum size. The stream of particles are directed against a downwardly inclined deflector to be directed downwardly toward a ground or concrete surface to form a growing conical pile of contaminated soil particles. A first set of spray nozzles, located above the particle stream, directs a spray of water containing decontaminating agents into the contaminated soil particle stream generally parallel to and within the stream of the contaminated soil particles, thus moistening the particles and assisting in producing a rolling action of the particles down the sides of the growing conical pile of particles. A second spray is utilized to direct a stream of water containing decontaminating agents against the underside of the stream of soil particles and the two sets of sprays provide a effective water barrier against the release into the atmosphere of aromatic materials carried by the contaminated soil particles.

REFERENCES:
patent: 4849360 (1989-07-01), Norris et al.
patent: 4913586 (1990-04-01), Gabbita
patent: 4927293 (1990-05-01), Campbell
patent: 4942929 (1990-07-01), Malachosky et al.
patent: 4993498 (1991-02-01), Fresnel
patent: 5024770 (1991-06-01), Boyd et al.
patent: 5039415 (1991-08-01), Smith

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