Intelligent, dynamic, load and quantity-controlled SBR technology

operational area | usage

  • Municipal wastewater treatment in combined wastewater and separate system for sizes from 500 to 300,000 PT
  • Industrial wastewater treatment
  • Especially for industrial wastewater treatment in combination with MAP precipitation and anaerobic pretreatment
  • Combination with wks metering technology
  • One to 4-lines, optionally in combination with inlet / discharge storage tank, in adaptation to the plant size

Technology | Process

The SBR process is a form of activated sludge process. The spatially separated functional components of a conventional aeration plant are implemented with time separation in one tank in the SBR process. The wastewater treatment takes place during the reaction phase, during the subsequent sedimentation and decanting phase the activated sludge is separated from the treated wastewater. Depending on the wastewater to be treated, the aeration is implemented through fine bubble pressure aeration or ejector aeration. The tank is circulated optionally by pulse aeration, horizontal agitators, ejectors or by means of
vertical agitators mounted on the clean water decanter. Depending on the overall configuration, batch feeding to improve the sludge settling properties and biological phosphorous elimination are possible. The innovative core of wks SBR technology is the intelligent, dynamic and load-dependent control of the process phases and technical system with turbidity-controlled removal of clean water, water level-dependent vertical agitator and automatic floating sludge
removal. Clean water removal follows the clean water /activated sludge phase boundary layer, in this way the sedimentation and decanting phase is limited to a minimum.

Process Engineering Components

  • HydroSys equipment system with:
    • AW-HydroMix vertical agitator
    • AW-HydroDek clean water removal (decanter)
    • AW-HydroKlar-PLUS optional clean water removal
    • AW-ASSA 200/E floating sludge removal
  • Automation technology incl. RBS-SBR control module for process optimisation
  • Energy-optimised aeration system


  • By using the RBS SBR control system the plant works at all times in the optimum process engineering and economic operating point
  • Maximum possible nitrogen elimination with operating costs-optimised use of energy
  • Extensive biological phosphorous elimination
  • Prevention of unwanted phosphorous redissolution at the end of the reaction phase
  • Turbidity controlled, surface and laminar clean water removal
  • Precisely matched functional characteristics of the components for an optimum process workflow to ensure the specified effluent discharge values
  • Energy cost reductions

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