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High energy efficiency by mixing with dual flows. Easy maintenance by installation on water surface.



Flow pattern

The structure of the dual mixer is very simple.
The dual flow generated by the dual mixer is highly efficient at agitating the tank contents.


  1. Low operating costs
    Few replacement parts
    Infrequent overhauls
  2. Equal agitating and mixing
    Equal agitating and mixing can be done with little variation in the MLSS concentration distribution in the tank. In addition, generation of surface scum is suppressed.
  3. Low noise
    The only sound source is the electric motor.
    There are no additional noise sources, such as a reduction gear.
  4. Easy to install
    Installation from the tank top
    Lightweight and compact
  5. Easy maintenance
    The drive unit is positioned outside of the tank.
    Simple structure (no speed reducer)

(In-house comparison)


Example of Application

  • New construction
  • Expansion
  • Remodeling
    (From conventional activated sludge process to advanced treatment)


DUAL MIXER is a registered trademark of Hitachi, Ltd. in Japan.