Method and apparatus for removing contaminants from soil

Details Method and apparatus for removing contaminants from soil Method and apparatus for removing contaminants from soil

1984-09-21

1986-09-16

Taylor, Dennis L.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

210170, 405 36, 405 52, G21F 920

Patent

active

046119507

ABSTRACT:
An apparatus and method for removing contaminants from soil in situ or at a remote location in which removal is accomplished by pumping a supply of uncontaminated water via a distribution conduit system to a series of spray nozzles. The spray nozzles are used to flood the surface of the contaminated soil with the supply water, which soaks into soil and mixes with the contaminants. The mixed water and contaminants travel through the soil to a set of vertical inlet risers positioned in the soil and located at a distance from the spray nozzles. The water-contaminant mixture is drawn through the inlet risers via a collection conduit system to a holding tank from when the water is taken for removal of the contaminants. The water is drawn through the inlet risers by producing a high velocity stream of water using a venturi device and passing the stream over the upper end of the removal conduit. The vacuum created by the high velocity stream causes the water in the inlet riser to flow into the removal conduit system.

REFERENCES:
patent: 3425555 (1969-02-01), Ridgeway
patent: 3859799 (1975-01-01), Jaco
patent: 4362434 (1982-12-01), Valiga et al.
patent: 4448690 (1984-05-01), Maphis
patent: 4449849 (1984-05-01), Horn et al.

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