Hydraulic and earth engineering – Soil remediation – In situ contaminant removal or stabilization
Patent
1993-01-12
1993-12-21
Taylor, Dennis L.
Hydraulic and earth engineering
Soil remediation
In situ contaminant removal or stabilization
405258, 405268, B09B 300, E02D 312
Patent
active
052716945
ABSTRACT:
Soil that is contaminated by hydrocarbons or other deleterious chemicals is processed through a soil shredding apparatus to break the soil into small particles having a substantially uniform maximum size. The particles are then conveyed to a location above a deposit area and directed onto the deposit area to form a growing pile of contaminated particles. Concurrently, a substantially cone shaped spray of an aqueous solution containing anti-contaminating agents, such as bacteriological microbes is sprayed on the pile. The configuration of the conical pile, taken in conjunction with the application of the liquid spray produces a rolling of the particles down the sides of the growing conical pile, thereby insuring the contacting of substantially all of the surfaces of each particle by the liquid containing the decontaminating agents. Concurrently, the moisture content of the conical pile of contaminated particles is periodically checked, and the flow rate of the liquid spray is appropriately adjusted to maintain a desired minimum water content and concentration of anti-contaminating agents within the conical pile of 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
Cooper Equipment Company
Taylor Dennis L.
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