Method and apparatus for decontaminating the aquifer of hydrocar

Details Method and apparatus for decontaminating the aquifer of hydrocar Method and apparatus for decontaminating the aquifer of hydrocar

1988-05-13

1989-07-04

Spear, Frank

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Fluid current controlled cyclic system

55 55, 210188, 2102422, 2102423, B01D 17035

Patent

active

048447951

ABSTRACT:
A system for decontaminating the aquifer of hydrocarbon spills utilizes one or more wells each fitted with a perforated screen into which a skimmer formed as a receptacle is suspended by a cable for vertical movement to desired levels, the receptacle having an open top and a diameter sized to fit into the screens with only slight clearance. Water is pumped from the receptacle into a separation tank and because of the slight clearance between the screen and receptacle refilling occurs from ground water at or above the level at which the open top edge of the receptacle is located with respect to the surface of the aquifer. Floating contaminants are drawn off from the separation tank and the contaminated water is pumped as a fine spray into an upper portion of a stripping tower. An air stream is blown into the lower portion of the tower through an upwardly directed elbow having a conical mesh closure permitting relatively free flow of air upwardly through the tower from the blower and preventing the downwardly flowing treated water from entering the elbow. Electric controls, including water level sensing devices in the receptacle, the separation tank and other auxiliary holding tanks, operate the pumps and air blower for automatic, fail-safe operation of the system.

REFERENCES:
patent: 4243529 (1981-01-01), Strauss
patent: 4273650 (1981-06-01), Solomon
patent: 4627922 (1986-12-01), Viator et al.
patent: 4761225 (1988-08-01), Breslin
patent: 4764272 (1988-08-01), Fox, Sr.

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