Patents Assigned to Minproc Technology Pty. Limited
  • Process for reducing the cyanide content of a solution
    Patent number: 5120451
    Abstract: A process for treatment of waste aqueous process streams from industrial process containing both cyanide ions and dissolved ammonia to reduce the cyanide content, comprising the consecutive steps: (a) adding a halogenating agent to the solution while maintaining the pH of the solution at greater then 7; (b) removing ammonia from the solution by aeration; (c) acidifying the solution to a pH of less then 7; (d) substantially neutralizing the solution; and (e) removing the ammonia from the solution by aeration.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: June 9, 1992
    Assignee: Minproc Technology Pty. Limited
    Inventors: Michael C. Costello, Douglas G. Rogers, Philip J. Guerney