Information on the use of cookies on this website

This website uses cookies, which are necessary to ensure certain functions of the website and help us to analyze how our website is used.

If you click "OK", you consent to the use of all cookies based on our privacy policy. You can revoke or adjust your choice at any time within our privacy policy.

If you click "Customize", you can make a selection.

Please make a choice regarding the use of cookies on this website.

Required cookies
These are cookies that are necessary to ensure the basic functionality of the website.

Required cookies
These are cookies that are necessary to ensure the basic functionality of the website.

Functional cookies
For the continuous improvement of our internet offer we use the service Google Analytics. Google Analytics uses cookies, which are small text files that are stored on your computer and that allow an analysis of the use of the website by you. More information can be found in our privacy policy, where you can change the use of these cookies at any time.


Integrated Fixed-Film Activated Sludge

Enhanced Biomass Fixed Bed System

The Eliquo Hydrok IFAS (Integrated Fixed-Film Activated Sludge) system has been developed utilising the Biotextil Cleartec media for which Eliquo Hydrok are the appointed sole UK distributor. When used in conjunction with the Aquaconsult AEROSTRIP® diffusers this system offers even further efficiencies within the treatment process.

Biotextil Cleartec is a textile product made of 100% polypropylene which by the nature of its construction creates a large specific surface area on which biomass can grow. The construction of the material permits good oxygen supply and prevents excessive growth of thick layers of biomass thus maintaining the optimum efficiency of the process.

How it works

The Biotextil Cleartec curtains are positioned directly above the diffusers, housed in a removable frame, set parallel to the flow. The configuration of the material allows for flexibility and movement within the flow of the tank, leading to an enhanced performance, this in turn increases the capacity of the wastewater treatment plant.

To maximise the volume capacity of the treatment tank, diffusers should be as close to the base as possible with the Biotextil Cleartec curtains positioned ideally between 40cm and 60cm above the diffusers. The best possible scenario is the combination of the low profile ultra-fine bubble diffusers and the Biotextil Cleartec media.

The curtains are set to allow the flow to pass between them horizontally, with the diffusers creating a vertical flow. As a result, the curtains are in constant motion and if thicker active sludge layers should attempt to settle on the material these are shaken off and removed as a result of the movement. This 'shedding' process prevents blockages and maintains optimum efficiencies and minimum energy requirements.

Eliquo Hydrok are able to construct a bespoke cage system which incorporates both elements, this allows them to be lifted for routine maintenance without interfering with the operational activity of the plant.

In summary

  • Increased performance
  • Excellent nitrogen elimination
  • Reduction of surplus sludge
  • No blockages of the textile curtains
  • Reduced energy requirement

IFAS System

A highly efficient partnership between fixed bed media and diffusers