Patents Assigned to Clark Environmental Services
  • Vacuum sparging process for treating contaminated groundwater and/or wastewater
    Patent number: 6217767
    Abstract: A process for the removal of hydrocarbon contaminates from groundwater and/or wastewater in ground wells, treatment trenches or above-ground tanks which utilizes differential pressure between the area above the groundwater and/or wastewater and the purging gas introduced therein to the upward flow of bubbles of the purging gas through the groundwater and/or wastewater requiring stripping or volatilization to remove the hydrocarbon contaminates therefrom.
    Type: Grant
    Filed: November 3, 1993
    Date of Patent: April 17, 2001
    Assignee: Clark Environmental Services
    Inventor: Remly Paul Clark