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AssigneeThe United States of America as represented by the Secretary of the Interior
InventorsDavid L. Naftz, James A. Davis
Estimating the term…
A groundwater decontamination system includes a decontamination unit adapted to be lowered down through a non-pumping well into an aquifer containing contaminated water. The unit can also be raised up and out of the non-pumping well for cleaning, servicing or replacement. The decontamination unit includes a porous outer tube with a plurality of holes through which contaminated water flows, and a porous inner tube with a plurality of holes through which flows in-flowing contaminated water flowing through outer tube. A contaminant removing reactive barrier material is disposed within the inner tube for removing on contact contaminants from the in flowing water. A flow directing arrangement, preferably in the form of flow directing fins, directs in-flowing water from the holes in the outer tube to the holes in the inner tube (i.e., provider of the channeling of the ground water into the reactive barrier material). The system can monitor the contaminant removal, as well as other conditions of the groundwater.
A groundwater decontamination system comprising at least one non-pumping well, a decontamination unit, means for lowering said decontamination unit down through said non-pumping well into an aquifer containing contaminated water and for raising said unit out of said non-pumping well, said decontamination unit comprising a porous outer tube having a plurality of holes therein through which contaminated water can flow, a porous inner tube having a plurality of holes through which can flow in-flowing contaminated water flowing through said outer tube, a contaminant removing barrier disposed within the inner tube for removing, on contact, contaminants from the in-flowing water, and a flow directing means for directing in flowing water from the holes in said outer tube to said inner tube and thus to the contaminant removing barrier.
A groundwater decontamination system according to claim 8, wherein the radionuclide is uranium.
A groundwater decontamination unit comprising a porous outer tube having a plurality of holes for receiving a flow of contaminated water, a porous inner tube having a plurality of holes for receiving water from said outer tube, a barrier material disposed in the inner tube for removing contaminants from said flow of water on contact therein, and a plurality of fins for directing said water from the holes in said outer tube to the holes in said inner tube.
Dependencies are inferred from the claim text.