TORNADO® Subsurface Aerators

Source: Fluence

TORNADO® Subsurface Aerators

With thousands of units in operation around the world, Tornado subsurface aerators have a proven record of maximizing performance while minimizing energy consumption.

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From extended aeration and activated sludge processes to lagoons and oxidation ditch applications, TORNADO® subsurface aerators deliver excellent oxygen transfer and high mixing efficiency to a wide range of wastewater treatment processes in any climate. This unique product mixes and aerates all or part of a basin.

The Tornado aerator is available in two main versions:

  • The Tornado self-aspirating aerator aerates on its own by drawing air from the surface and injecting it beneath the surface. It’s available in sizes from 2 to 100 horsepower (1.5 to 75 kW).
  • The Tornado blower-assisted aerator is used for applications requiring a higher level of oxygenation. The aerator includes a blower, which forces more air down the inlet and into the wastewater, producing higher oxygen It’s available in sizes from 2 to 100 horsepower (1.5-75 kW).

Other options include:


We’ve added to the line with our energy-saving SMARTAERATOR™ TORNADO® surface aerator. This plug-and-play technology automatically regulates aeration levels and remotely monitors the performance of our rugged, reliable Tornado aerator. Tackle the harshest wastewater environments using SmartAerator for optimal and cost-effective aeration and mixing.

This proprietary technology system uses controls, sensors, and variable-frequency drives to significantly reduce the energy required to aerate wastewater.

SmartAerator can be sold as a retrofit kit, or with new Tornado aerators. Significant energy savings can be seen particularly with projects that require high-horsepower aerators and projects with multiple aerators. We anticipate the payback period for a typical installation to be approximately two years or less.


The AQUA TORNADO® is a float-mounted, freshwater aeration device that features a large-diameter stationary draft tube with unrestricted air intake and a large propeller.

This self-contained unit requires no additional blowers, pumps, or mounting platforms. The Aqua Tornado has water-lubricated lower bearings for use in water reservoirs and lakes where grease-lubricated submerged bearings are prohibited.

Aeration quietly occurs just below the surface with no spraying or splashing, reducing odors. The Aqua Tornado is ideally suited for ponds 4 to 15 feet (1.2- 4.6m) in depth. Aqua Tornado injects air into the water at a high velocity at the open propeller hub.

Effective in all seasons, the aerator maintains large, ice-free areas in winter operations. Two- and 3-horsepower units are available.

Why Choose the TORNADO® Aerator?

The Tornado offers a wide range of benefits for customers.

  • Maximize Aeration
  • Easily Add Pure Oxygen
  • Reduce Odors
  • Proven Performance
  • Rugged, Low-Maintenance Design
  • Extensive Applications and Widespread Use

TORNADO® Aeration Solutions to Suit Your Needs

Lease units are readily available as a quick backup for unforeseen conditions, if your capital budget is limited, or if you would like to evaluate a unit for your specific needs. When you decide to purchase the leased equipment, you’ll receive credit for your leasing payments. At Fluence, our tried-and-true TORNADO® aeration line can be tailored to fit your requirements. Contact Fluence for more information about Tornado subsurface aerators, leasing prices, and purchase costs.


Contact Fluence to learn more about our wastewater treatment solutions, or to discuss your specific project details.

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