Chur, Wastewater Treatment, Switzerland
Client:Tiefbauamt, Chur
Capacity:100,000 p.e.


  • Municipal wastewater treatment plant using the WABAG moving bed technology (FLUOPUR® system)
  • Extension of the existing biological process to a year-round nitrification system.
  • Process steps:
    • Mechanical pre-treatment
    • Primary sedimentation
    • denitrification with activated sludge
    • reduction of organic compounds and nitrification with FLUOPUR®-Hybrid-moving bed process (activated sludge & moving bed)
    • final sedimentation
    • P-precipitation in return sludge
Chur WWTP 1
Chur WWTP 2