×

System for sparging ground water contaminants

DC
  • US 5,425,598 A
  • Filed: 08/12/1993
  • Issued: 06/20/1995
  • Est. Priority Date: 08/12/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A system for sparging ground water utilizing a borehole which extends from the ground surface downwardly below a water table surface, comprisingwell means disposed in the borehole, and including a liquid permeable lower sidewall disposed at a first location below the water table surface, a liquid impermeable central sidewall disposed at a second location above the first location, but below the water table surface, and a liquid permeable upper sidewall disposed at a third location above the second location and at least a portion of which is located below the water table surface, andan injection tube disposed to extend downwardly in the well means to a lower end termination located adjacent the lower sidewall of the well means, for injecting gas under pressure out a lower end of the tube to thereby produce frothing in water in the well means which draws in more water through the lower sidewall, carries it upwardly and out the upper sidewall.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×