Roto Submersible Aerator

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Roto-Type Submersible Aerator


Subair, is a roto-type submersible aerator, made popular for its simple, cost effective means of providing aeration and mixing of wastewater or sludge. Surface air is drawn through a central impeller by the Subairs’ air supply pipe. The powerful impeller infuses together air-water as it accelerates through the impeller and radially discharges the air-water mix through vaned nozzles and releasing fine air bubbles into the tank. Resulting from the high-velocity, radially discharge air bubbles, additional mixing is achieved.

Engineered to rest at a tanks bottom, the Subair submersible aerator delivers essentially a noiseless and vibration free working environment. These self-standing aerators practically install themselves, simply by using a guide tube or cable attachment to drop to the bottom of either a filled or empty tank. This roto-type, submersible aerator is a perfect solution for both small-to-medium sized tanks and suitable for pre-aeration in sewage and wastewater treatment plants.

  • Eliminates the noise of a typical blower and multiple pipes and valves

  • Simplifies maintenance by raising the aerator on guide tubes or via direct chain attachment

  • Emits 360 degree aeration/mixing


  • Prevents Sludge Settlement

  • Convenient lift-in and lift-out installation

  • Noiseless and Vibration Free

  • Low Cost Oxygen Transfer

  • Ideal for Small-to-Medium Tanks

  • Minimal Maintenance

  • No Need for Multiple Pipes and Valves


  • Sludge Tanks

  • Retention Tanks

  • Bio-Reactors