Patents Assigned to H. A. Kroon B.V.
  • Method of purifying soil polluted by oil
    Patent number: 4415368
    Abstract: A method of purifying hydrocarbon polluted soil. The polluted soil, mixed with water and air, is sucked into a conduit. Meanwhile, water under high pressure is ejected from a jet pipe as a substantially conical water curtain. The sucked-in soil is then passed through the water curtain, which removes the pollutants, and the thereby-purified soil-water mixture is ejected.
    Type: Grant
    Filed: July 30, 1981
    Date of Patent: November 15, 1983
    Assignee: H. A. Kroon B.V.
    Inventor: Hendrik A. Kroon