For the mixing and oxygen supply in aeration tanks BIOGEST AG developed the CROWN-surface aerator. This aerator has been optimized continuously in the last years in cooperation with the Technische Universität Darmstadt (Technical University of Darmstadt) to maximize its capability. Consequently today an efficient and reliable aeration system could have been made available for the worldwide market.


  • Long service life for decades
  • High operating safety
  • Low maintenance efforts
  • High oxygen yield
  • Upgradable by a crusher unit

System sizes:

  • CROWN 750
  • CROWN 900
  • CROWN 1.200
  • CROWN 1.600
  • CROWN 2.000

more sizes in request

Services of BIOGEST AG:

  • System dimensioning
  • System planning
  • Installation
  • Start-up
  • Operational plant optimization