How does bead filters work?

Compact filters to 22 m3/h

These filters offer superior biofiltration through an automatic compressed air backwash

  • innovative
  • without any moving parts or electronics.

Small compact filters for aquaponics

Perfect for circuits and small applications, these filters have an automatic backwash for easy maintenance.

Airlift special filters

These filters are designed for high volume applications.

They can be configured with pumps or airlifts for advanced energy savings…

High volume filters

These new filters offer automated backwashing and can process large volumes of water under pressure, while gently backwashing the media.

We have developed our own bead filter, which is a breakthrough in filtration technology. It stands out among most filters on the market because of its self-cleaning backwash mechanism.

  • In this process, the water flows under the membrane (the beads) where nitrification takes place.
  • Afterwards, moving upwards through these beads, mechanical and biological filtration happens.
  • During this process, compressed air is added to the backflush chamber at a constant, predetermined rate to achieve the required backflush frequency. Its goal is to achieve the desired backwash frequency.
  • When the pressure chamber is full, the compressor is triggered, which releases all of the air that was in the chamber under the bead bed.
  • The sudden release of air from the compression chamber will cause the logs to shake as the air passes through them.
  • As the beads move, an expansion of the bead bed occurs at the bottom while water also drains down through the expanded beads, sweeping the solids out of the compression chamber.

Backwash water suspended solids settle in the chamber and are then removed from the filter. These filters recycle the wash water while concentrating the mud.

Thus, it is possible to achieve filtration with extremely low water loss while maximizing the nitrification capacity.

Frequent backwashing has been shown to be beneficial in optimizing the nitrification capacity of a filter.

Extensive and smooth wash cycles promote a higher nitrification rate by maintaining a thin and healthy biofilm on the surface of the beads.

Typical backwash cycles occur every 3 to 6 hours.

Let's start today!

Whether it’s a simple drum filter or a complete custom recirculating aquaculture system (RAS), our engineers can help you select the perfect combination of equipment for your needs.

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