Patents Assigned to Mecafina SA
  • Installation for the mechanical-biological purification of waste water
    Patent number: 4090965
    Abstract: An installation for the mechanical-biological purification of waste water or sewage incorporating at least one biological stage and one post-clarification stage, the post-clarification stage incorporating a filter. The filter is a drum filter having a filter surface wherein at the inflow or deposit side thereof there engages a suction nozzle which extends transversely with respect to the direction of relative movement between the filter surface and the suction nozzle.
    Type: Grant
    Filed: December 26, 1972
    Date of Patent: May 23, 1978
    Assignee: Mecafina SA
    Inventor: Ernst Fuchs