Coarse bubble diffusers

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Eliminate costly and time-consuming maintenance with our clog-free coarse bubble diffusers. These solutions reliably mix and aerate wastewater with high concentrations of solids, making them ideal for sludge storage tanks and activated sludge tanks with biofilm carriers.

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Peace of mind

Clog-free performance.

Superior mixing and aeration.

Ideal for solids concentrations up to 8%.

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Intelligent design

Open-bottom design flushes solids.

Independent air connections.

Stainless steel construction.

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Smart investment

No maintenance.

Enhanced fouling resistance.

Minimal parts replacements.

What is a coarse bubble diffuser?

A coarse bubble diffuser is a mixing and aeration solution for municipal and industrial wastewater treatment projects. It is ideally suited to the activated sludge processes used by MBBR and SBR systems.

Available in lengths up to 4.25 m, Ecoprocess coarse bubble diffusers (formerly known as AirOmega) reliably transfer oxygen and mix wastewater by generating powerful crossflow currents. Thanks to our unique open-bottom design, solids are automatically flushed away to give you clog-free performance you can trust in all conditions.

Ecoprocess coarse bubble diffusers are resistant to freezing and damaging UV rays, making them ideal for basins that sit empty for extended periods.  


  • municipal treatment plants
  • agri-food processing plants
  • pulp and paper mills
  • breweries and wineries
  • dairies

How do our coarse bubble diffusers work?

A centralized air supply forces air through pipes fixed to the bottom of the basin. This air enters the rectangular chamber that houses each Ecoprocess coarse bubble diffuser, then exits the unit through rows of calibrated orifices.

The vertical power of diffused air generates crossflow currents that effectively break down organic material and keep solids in suspension so they don’t form unwanted sludge.

To ensure high performance, each diffuser uses our open-bottom design to constantly flush away solids. This simple but important feature prevents fouling and eliminates the need for diffuser maintenance.

Where do we offer coarse bubble diffusers?

We proudly offer Ecoprocess coarse bubble diffusers in the following countries:

Get in touch

We are here to help. For more information about our products and services, including their availability around the world and in your home country, please contact our team of experts today. 

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