Process and energy-optimised activated sludge process with dynamic process controls results in maximum elimination rates with minimised operating costs

operational area | usage

  • Municipal wastewater treatment in combined wastewater and separate system for sizes from 500 to 500,000 PT
  • For industrial wastewater treatment in combination with magnesium-ammonium-phosphate (MAP) precipitation and anaerobic pretreatment
  • Combination with wks metering technology
  • In adaptation to the plant size, activated sludge separation with secondary settlement tank flowed through horizontally or vertically or by means of pressure release flotation
  • Can be implemented as a round/rectangular form, as a compact TRIUNO tank or as a combination tank

Technology | Process

The process-optimised activated sludge process applies to wastewater plants in continuous operation. The aeration takes place depending on the wastewater to be treated, through fine bubble pressure aeration or ejector aeration. The tank circulation is generated optionally by pulse aeration, horizontal agitators, ejectors or by means of vertical agitations. Nitrification and denitrification can be implemented as intermittent, upstream, downstream, simultaneous or as a cascade. Alongside the biological process the chemical phosphorous elimination is implemented as simultaneous precipitation or post-precipitation. The key point of the optimised process is the intelligent, dynamic control of nitrification and denitrification depending on the inflowing quantity of wastewater and the load; the plant thus always works in the in optimum operating point and highly energy-efficient. The separation of the activated sludge / clean water mixture takes place by means of gravity sedimentation in the secondary settlement or in case of poor settling properties, by means of pressure release flotation.

Process Engineering Components

  • Process-relevant equipment for aeration, circulation, secondary sedimentation and flotation
  • Automation technology incl. RBS activation control module for optimisation of the nitrification, denitrification and phosphorous elimination process
  • Intelligent networking of the individual process engineering steps


  • By using the RBS activated sludge 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
  • Largely biological and chemical phosphorous elimination

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