Direct Drive Mixer

The AquaDDM® Mixer provides maximum wastewater mixing efficiency. When mixing requirements are the controlling factor, the AquaDDM mixer can reduce power costs, while delivering 3-4 times the mixing of any aerator of the same size. The ducted impeller improves pumping efficiency. The integrated flow vanes and lower input torque eliminate the need for tank baffles.


    Motor options:

    -  Explosion proof

    -  High-efficiency

    -  Endura® Series


    Flexibility in materials of construction


    Heavy duty bearings and seals


    Anti-fouling impeller


    Horsepower: 3 to 75


    Simple physical construction makes handling easy


    Lower initial cost, and less expensive to install and maintain than gear reduced (slow speed) units


    Better and more reliable service than submerged directional mixers


    One-piece stainless steel shaft. No couplings, no submerged bearings


    Suitable for most basin configurations


    Anti-erosion plate available for use in earthen basins, or basins with synthetic liners


    Directional flow option available


    Anoxic Systems


    Back Mixing










    Directional Mixing


    Blending Combined Streams


    Sequencing Batch Reactors (SBRs)

Operation of the AquaDDM® Mixer

View a non-audio animation of the AquaDDM® mixer.

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Featured Story

AquaDDM® Mixers Chosen Over Submersible Directional Mixers for Optimum Anoxic Mixing

The city of Colorado Springs in Colorado currently operates a 65 mgd wastewater treatment facility. To help meet the stringent water quality standards for denitrification, the facility has employed (20) 7.5 hp AquaDDM mixers. In 1994, Colorado Springs opted to install (20) AquaDDM mixers instead of installing submerged directional mixers.

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