HYPERCLASSIC®-Mixing and Aeration System

With this system, INVENT presents a highly flexible and rugged solution for fine-bubble aeration in municipal and industrial wastewater. Especially in difficult operating conditions, the exceptional properties of this system become increasingly valuable.

Product Information

The HYPERCLASSIC®-Mixing and Aeration System was introduced in numerous process stages of municipal and industrial wastewater treatment plants over 25 years ago.

Uniquely, it combines the features of an agitator with those of an aerator, offering an extremely flexible range of operation and use:

  • Agitation without aeration
  • Fine bubble aeration with simultaneous homogeneous and deposit-free mixing
  • Intermittent operation (e.g. SBR process, MAB)

The sophisticated design, the rugged construction and the mechanical aeration principle make this agitation and aeration system very versatile. As such, INVENT offers a reliable and variable solution for complex problems:

  • High oxygen supply capacity even in difficult media (high TS, surface-active substances)
  • No increase in pressure drop during operation in contrast to membrane aeration
  • No aerosol formation
  • Deposits are avoided in all operating stages
  • Design in lift-out version available
  • Materials are matched to operating conditions (temperature, pH, salinity, precipitation, etc.)

The HYPERCLASSIC®-Mixing and Aeration System is tailored to your requirements on a case-by-case basis and can be supplied in a number of versions – for installation on a bridge/tank cover, lift-out, submerged or floating.

Designation Value
Rated Capacity
9,2 – 37 kW
Efficiency Class
IE3
Mixer Body Diameter 2.000 / 2.500 mm
Rotation Direction CW / CCW
Rotation Speed 26 – 44 rpm
Mixer Body Material GfK-PP
Cage Construction Stainless Steel
Air Distributor HPDE / Stainless Steel

WWTP Aalen, Germany

Plant: WWTP Palm Papier Aalen, Germany
Type of Plant: Industrial Wastewater Treatment Plant
Start-up Year: 2015
Application:

  • Mixing and aeration for BOD/COD elimination in aerobic tanks

Scope of Delivery:

Aviko, Belgium

Plant: WWTP Aviko, Belgium
Type of Plant: Industrial Wastewater Treatment
Start-up Year: 2020
Application:

  • Agitation and aeration for BOD/COD elimination in aerobic tanks
  • Aeration for nitrification in aerobic tanks

Scope of Delivery:

Kimberly-Clark, UK

Plant: WWTP Kimberly-Clark, UK
Type of Plant: Industrial Wastewater Treatment Plant
Start-up Year: 2006
Application:

  • Mixing and aeration for COD elimination

Scope of Delivery:

Jebel Ali, UAE

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

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

Scope of Delivery:

Varel, Deutschland

Plant: WWTP Varel, Germany
Type of Plant: Industrial Wastewater Treatment Plant
Start-up Year: 2012-2019
Application:

  • Mixing and aeration for BOD/COD elimination in aerobic tanks

Scope of Delivery:

Holit, Israel

Plant: WWTP Holit, Israel
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 2017
Application:

  • Mixing and aeration for BOD elimination, nitrification and denitrification in an SBR plant
  • Clear water discharge in an SBR plant
  • Suspension & homogenization in sludge storage tank
  • Aerobic sludge digestion

Scope of Delivery:

Kriebethal, Germany

Plant: WWTP Kriebethal, Germany
Type of Plant: Industrial Wastewater Treatment Plant
Start-up Year: 2017
Application:

  • Mixing and aeration for BOD elimination

Scope of Delivery:

Jacksonville, USA

Plant: WWTP Jacksonville, Florida, USA
Type of Plant: Municipal Wastewater Treatment Plant
Start-up Year: 2009
Application:

  • BOD elimination, nitrification and denitrification in an SBR plant

Scope of Delivery:

Brunnenthal, Germany

Plant: WWTP Carl Macher, Brunnenthal, Germany
Type of Plant: Industrial Wastewater Treatment Plant
Start-up Year: 2019/2020
Application:

  • Mixing and aeration for BOD/COD elimination in an SBR plant
  • Mixing and aeration for BOD/COD elimination in a lime trap

Scope of Delivery:

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    Applications of the INVENT HYPERCLASSIC®-Mixing and Aeration System

    Aeration in packed bed processes MBBR

    The mass transfer processes in packed reactors are not determined by the size of the air bubbles, but rather by the nature and volume fraction of growth bodies and their specific surface area and wettability.

    BOD or COD degradation

    Highly efficient supply of oxygen to the microorganisms for BOD and nitrogen elimination.

    The agitation and gassing system acts as a permanent aeration system for biological carbon degradation in aeration tanks. We can react flexibly to fluctuations in freight. The simultaneous circulation by the agitator ensures a homogeneous and deposit-free mixing even with low air supply in the activated sludge tank.

    Fakultative aeration

    In nitrification stages, the stirring and aeration system serves as a permanent aerator. If (seasonal) process changes in the activated sludge tank require a temporary changeover from nitrification to denitrification (swing zone), it is possible to run in pure agitation mode without aeration. A change between operation with ventilation and without ventilation is possible at any time.

    SBR (Sequencing Batch Reactor)

    In the SBR process, several cycles with different process phases are usually run through each day. Important boundary conditions for a well-functioning overall process include a rapid change between phases with oxygen supply and pure stirring operation, homogeneous mixing and flexible oxygen supply capacity with a wide working range.

    In addition to the above boundary conditions, the stirring and gassing system offers other advantages in the SBR process:

    In the case of strong seasonal freight fluctuations (food processing, tourism, etc.), a temporary shutdown is possible without any loss of quality of the components or functionality.
    Simple installation without complex installations in the tank – With the liftable variant, maintenance can be carried out without emptying the tank.

    Aerobic sludge stabilization

    Activated sludge with a high dry matter content forms a viscous, pseudoplastic medium. Due to the shear-thinning effect of the agitator in aeration mode, there is a significantly better oxygen supply to the agitator and aeration system compared to membrane aerators. In addition, problems such as clogging of membranes, pressure increases and material aging due to high temperatures in the agitation and aeration system no longer play a role.

    Pure oxygen aeration

    The gassing or oxygen supply in the process can be carried out using the stirring and gassing system with atmospheric oxygen or pure oxygen.

    Membrane Bioreactor (MBR)

    Highly efficient supply of oxygen to the microorganisms for BOD and nitrogen elimination Continuous cleaning of the membrane surface to limit the cover layer thickness.

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