Patents Assigned to N.V. Centrale Suiker Maatschappij
  • Apparatus for the anaerobic purification of waste water
    Patent number: 4253956
    Abstract: In apparatus for the anaerobic purification of waste water the invention aims at improving the structure and the operation. In known apparatus of this kind there is a reactor tank with one or more aftersettling compartments in the upper part thereof, with inlet and outlet openings for water and sludge into and from the aftersettling compartments from and into the reactor tank respectively.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: March 3, 1981
    Assignee: N.V. Centrale Suiker Maatschappij
    Inventor: Kees C. Pette
  • Combined anaerobic reactor and settler
    Patent number: 4165285
    Abstract: The invention relates to an installation for anaerobic purification of waste or effluent water comprising particles which comprises a reactor, an after-settler device in the top part of the reactor which separates an upper settling zone from an anaerobic decomposition zone, and means are provided for using the developed methane gas as a transport aid of the particles and for separating said gas from said particles.
    Type: Grant
    Filed: June 21, 1977
    Date of Patent: August 21, 1979
    Assignee: N.V. Centrale Suiker Maatschappij
    Inventors: Evert Wind, Robbert DE Vletter