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Brian Emery
Applications Engineer

Aqua-Lator® Direct Drive Mixers

An efficient high-speed surface mixer available in sizes from 3 HP up to 75 HP.

​A proven solution in mixing applications, the Aqua-Lator® DDM provides the performance and reliability needed in anaerobic/anoxic tank mixing.  Utilizing a powerful downward propeller-driven pumping action, the Aqua-Lator® Direct Drive Mixer helps disperse oxygen while keeping solids in suspension for optimal biological activity.  These mixers can be added to almost any basin with few or no modifications.

Submersible or Surface Mixers? 
Sink or Swim: A Comparison of Submersbile and Surface Mixers for Anoxic and Anaerobic Tank Mixing.



  • Aerated lagoons
  • Stabilization basins
  • Sequencing Batch Reactors (SBR)
  • Activated sludge treatment plants
  • Aerobic digestion

 Key Benefits

  • ​Low operating costs
  • Trouble-free performance
  • Anti-fouling, non-cavitating precision cast stainless steel propeller


  • ​Range of sizes – 3 to 75 hp
  • Wide variety of materials of construction
  • Dynamically and hydraulically balanced motor module
  • Largest one-piece floats available – stainless steel or fiberglass reinforced plastic
  • One piece stainless steel shaft
  • Stainless steel discharge volute designed to maximize mixer efficiency
  • Optional discharge volute extension for deeper mixing
  • Unique patented Oxygen Transfer Eliminator (OTE)
brian.emery@evoqua.com Aqua-Lator® Direct Drive Mixers