INVENT made a major contribution by introducing hyperboloid mixing technology to the water and wastewater treatment market in the 1990s.

Product Information

The HYPERCLASSIC®-Mixer is the optimum mixer for all suspending and homogenization tasks required for water and wastewater treatment.

The rotation of the hyperboloid-shaped agitator body close to the bottom generates high-speed and turbulence at the bottom of the basin. This reliably prevents the settling of sludge particles.

Eight transport ribs generate a three-dimensional main flow with a high circulation rate. This ensures excellent, uniform mixing.

Because of the low speeds, the energy input is low in shear force. Sludge flocculation is thus subjected mechanically to minimal stress loads.

Low speed at the water surface reliably prevents aerosol formation and oxygen transfer.

Efficient design and the use of rugged materials minimize operating and maintenance costs.

Technische Zeichnung INVENT HYPERCLASSIC Rührwerk Hyperboloid Rührkörper
Rated Capacity
0,37 kW – 37 kW
Mixer Body Diameter500 mm – 2.500 mm
Rotation Speed14 rpm – 40 rpm
Direction of RotationClockwise or Counterclockwise
Mixer Body MaterialGlass fiber reinforced plastic or high-tech polymer
Shaft MaterialGlass fiber reinforced plastic or stainless steel
Weight50 kg – 1.200 kg
Efficiency ClassIE3

DC Water Blue Plains, USA

Plant: WWTP DC Water Blue Plains, USA
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 2013

  • Suspension and Homogenization for Denitrification in anoxic basins

Scope of Delivery:

New York City, USA

Plant WWTP Bowery Bay, USA
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 2008

  • Suspension & Homogenization for Denitrification in anoxic Basins

Scope of Delivery:

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Murcia, Spain

Plant WWTP Baños y Mendigo, Spain
Type of Plant: Industrial Wastewater Treatment Plant
Start-up Year: 2018

  • Mixing for Denitrification in a SBR Tank
  • Aeration for BOD/COD-Removal and Nitrification in a SBR Tank

Scope of Delivery:

Berlin Schönerlinde Kläranlage HYPERCLASSIC Rührwerk

Schönerlinde, Germany

Plant: WWTP Schönerlinde, Germany
Engineering Office: Berliner Wasser-Betriebe
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 1999

  • Suspension and Homogenization for Bio-P and Denitrification in
    anaerobic and anoxic Basins

Scope of delivery:

Vienna, Austria

Plant: WWTP Vienna, Austria
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 2017

  • Suspension & Homogenization in for Denitrification in Swing Zones

Scope of Delivery:

Postojna, Slovenia

Plant: WWTP Postojna, Slovenia
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 2015

  • Suspension & Homogenization in Intermittent Aerated Tanks

Scope of Delivery:

BorsodChem, Hungary

Plant: WWTP BorsodChem, Hungary
Type of Plant: Industrial Wastewater Treatment Plant – Chemical Industry
Start-up Year: 2007

  • Mixing & Homogenization in SBR Basins

Scope of Delivery:

Jebel Ali, UAE

Plant: WWTP Jebel Ali, UAE
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 2009

  • Aeration in the sand trap
  • Stirring and homogenization in anoxic tanks
  • Stirring and aeration in pre-aeration and aeration tanks

Scope of Delivery:

Kronstadt, Russia

Plant: WWTP Kronshtadt, St. Petersburg, Russia
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 2014

  • Mixing in anaerobic and anoxic activated sludge tanks
  • Mixing in anoxic/aerobic activated sludge tanks
  • Aeration in activated sludge tank

Scope of Delivery:

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    In our videos we introduce the INVENT mixing technology

    HYPERCLASSIC®-Mixer evolution 7

    With the current version of the HYPERCLASSIC®-Mixer evolution 7, the seventh, completely revised and revolutionary improved version of the classic hyperboloid agitator is now available.

    Products and Team

    The wide range of INVENT products fulfills all process- and plant dependent requirements for biological wastewater treatment reliably and energy efficient.

    Applications of the INVENT HYPERCLASSIC®-Mixer


    With denitrification, it is crucial that the entire tank content is homogenized and that oxygen entry on the surface is avoided. The HYPERCLASSIC®-Mixer is suitable for this, which generates a bottom flow directed radially outwards via transport ribs optimized in terms of flow mechanics. The particles are transported upwards along the pool wall. At the water surface, the speed has reduced to such an extent that no oxygen is introduced.


    For the destabilization of the colloidal state, a high energy input and a long contact time between the flocculant and the colloid are required for the formation of micro flocs. The CYBERPITCH®-Mixer combines these aspects with its flow-optimized agitator blade shape and its design for high speeds.


    Crucial for the success of the development of Markoflocking is a gentle agitation with simultaneous complete circulation of the entire tank content and the flocculation aids within the dwell time.

    The HYPERCLASSIC®-Mixer has low shear forces due to its hyperboloidal agitator body shape and low speeds and at the same time ensures complete mixing of the container. This leads to frequent particle interactions, which enables maximum floc growth.


    When conditioning the water, chemicals are added, which should be distributed as quickly and homogeneously as possible in the tank.

    If high energy inputs are required, the CYBERPITCH®-Mixer is suitable due to its high speeds and its robust design made of high-quality stainless steel. The INVENT HYPERCLASSIC®-Mixer is used to adjust the pH value and water hardness when energy-efficient mixing of the tank contents is sufficient.


    The CYBERPITCH®-Mixer is suitable for quickly and efficiently stirring in the activated carbon and mixing it during the reaction time (adsorption) if a high local energy input is required. The HYPERCLASSIC®-Mixer is used for applications with low shear forces, as it ensures complete mixing that is much more gentle on the particles thanks to the lower speeds, a larger agitator diameter and the design of the agitator body close to the bottom.

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