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Diffusion Systems

The most effective and efficient discharge system

How dome diffusers work

The key to success in using ozone in water treatment is ensuring that the ozone can be introduced into the process in the most efficient manner. One of the most effective methods is to place a diffuser at the bottom of contact tank, to enable the discharge of homogenous bubbles uniformly through the water inside the tank.

Curio Water design and manufacture a range of dome diffusers for this purpose. The diffuser consists of two major components – a porous aluminium oxide dome and a base with a threaded fitting connecting to the gas source.

Example of usage

The diffusers produce a cloud of small bubbles to create a large contact area, thus ensuring maximum mass-transfer rate The size and number of dome diffusers required (as well as the tank dimensions and geometry) is determined by the application, nominal flow and ozone dose.

For example, facilities for drinking water production require low doses of ozone, short contact time and one chamber with diffusers for ozonation, while facilities for waste water treatment require a much higher ozone dose, longer contact time and multiple chambers for ozonation.

dome diffusers water treatment
dome diffuser close up
dome diffuser component
dome diffuser components
dome diffuser


  • Potable water treatment

  • Waste water treatment

  • Process applications

Main charcteristics

  • High mass-transfer efficiency

  • Even bubble formation

  • Long service life

Key benefits

  • Mass-transfer rate > 90%

  • Homogeneous bubble formation

  • Highly resistant ceramic material

  • Extreme stability over long service periods

  • Easy installation

  • Maintenance-free

  • Widely accepted and used technology

  • WRAS Approved

dome diffusers
dome diffusers  to enable the discharge of homogenous bubbles

Additional Services & Capabilities​

  • Customisation is available – including choice of different connections and sealing material

  • Bespoke design and manufacture available



We pride ourselves on our independent status and have no loyalties to or vested interests in other companies in the industry. We can therefore offer impartial advice, based on accurate, objective information and develop or manufacture solutions to drive greater operational efficiency, reduce failures and improve quality.

We are always happy to design a tailored and specific package of support and advice for individual clients – including in commercially sensitive areas.
Please contact us for more information.

Brave thinking.

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