Patents Assigned to GEO2 Limited
  • Method for treating acidic waste water
    Patent number: 6139753
    Abstract: The present invention relates to a method of treatment of acid waste waters or acid drainage waters containing metals comprising ferrous and ferric ions, the method comprising increasing the pH of the acid waste to at least 7.5 by addition of an alkaline reagent under conditions such that ferrous ions are stable with respect to oxidation to ferric ions, to form a precipitate and collecting the precipitate.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: October 31, 2000
    Assignee: GEO2 Limited
    Inventor: Reginald Morton Taylor
  • Reactor
    Patent number: D407793
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: April 6, 1999
    Assignee: GEO2 Limited
    Inventor: Ronald William Arthur