Patents Assigned to Commonwealth Scientific and Research Organization
  • Method of removing impurities from hard waters or waters with significant calcium/magnesium concentrations
    Patent number: 4882064
    Abstract: A method for removing suspended impurities and colored substances from water which is hard and/or has a pH in excess of 5 which comprises contacting the water at its natural pH with a coagulant/adsorbent which comprises a finely divided particulate mineral material, the individual particles of which have a thin hydroxylated surface layer having a positive zeta potential at the adsorption pH, and separating the thus treated water from the coagulant/adsorbent.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: November 21, 1989
    Assignee: Commonwealth Scientific and Research Organization
    Inventors: David R. Dixon, Nevil J. Anderson