Hydro-Ejector

Self-aspirating aerator for the oxygenation and mixing of municipal or industrial wastewater.


Hydroéjecteur BIOTRADE sur châssis pour l'oxygénation et le mélange des eaux usées.

The BIOTRADE hydro-ejector is a self-aspirating aerator designed to provide oxygenation and mixing in biological basins. This system is based on a pump, a hydro-ejector and an air suction pipe, creating an optimised mixing chamber for maximum oxygen transfer into the effluent.

In addition to this standard model, BIOTRADE also offers tank-mounted hydro-ejectors, sized on request to meet the specific requirements of each installation.

BIOTRADE offers hydro-ejectors in two versions:

  • Frame-mounted: for direct installation in basins, with power ratings from 6 to 18.5 kW.
  • Tank-mounted: sized on request for integration into tanks or reservoirs.
Power (kW)691418.5
Number of hydro-ejectors1112
Motor speed (rpm)1470147014701470
Insulation classHHHH
Motor protectionIP68IP68IP68IP68
Current at 400 V (A)5.49.310.736.9
Efficiency (%)70.876.576.892.6
Weight (kg)380430570690
Flow rate (m³/h)500
Recommended water level (m)Min. 1.5 / Max. 4Min. 1.5 / Max. 4Min. 1.5 / Max. 4Min. 1.5 / Max. 4

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  • Self-aspirating: no external compressor required, reducing energy costs.
  • Efficiency: optimised mixing chamber for maximum oxygen transfer.
  • Easy installation: suitable for full or empty basins, without major modifications.
  • Durability: IP68 motor protection and resistant materials for a long service life.
  • Air suction pipe: stainless steel or PVC, with seals and bolting.
  • Lifting chain: stainless steel chain to facilitate maintenance operations.

How does the Hydro-Ejector work?

The Hydro-Ejector draws in ambient air through an air suction pipe and mixes it with water in a dedicated chamber, creating fine bubbles for optimal oxygenation.

Can the Hydro-Ejector be installed in an existing basin?

Yes, the Hydro-Ejector can be installed in full or empty basins, without major structural modifications.

What are the manufacturing lead times?

The manufacturing lead time is 12 weeks from order approval.

Do you offer tank-mounted hydro-ejectors?

Yes, BIOTRADE offers tank-mounted hydro-ejectors, sized on request according to the specific requirements of the site.