Low speed aerators are used for aeration and mixing. Research & Development (R&D) by TE Engineering.

This concept has been successfully installed in hundreds of projects throughout the world.

Technical facts about BIOJET™ surface aerators

Aerators are used in:

Fixed installations for non-variable water levels

Two-street continuous flow application with four BIOJET™ ST 1500 aerators for nitrification and two BIOJET™ ST 1300 for de-nitrification of 6,800 m³/day, installed in Czech Republic.

Floating BIOJET™ aerator for variable water levels, in SBR-process

Excellent aeration using BIOJET ST 1000 in an Australian application.

BIOJET™ ST 2100 inside a large 23 m diameter tank for treating 600 m³/day of effluent with 2,000 mg/l BSB₅. Result: BSB₅ less than 15 mg/l. Application in Germany.

BIOJET™ ST 1000 installed in an underground tank in Australia.

Advantages

Excellent content mixing during de-nitrification with guaranteed liquid-flow of up to 0.3 m/sec

High oxygen supply with high efficiency (kgO₂/kWh)

No remission of oxygen supply, even after decades

Corrosion resistant thanks to manufacture in AISI 304L or
AISI 316L-materials

Either as fixed installation for a flow path or as floating installation for SBR

Only one turbine for mixing and aeration necessary

Easy and simple maintenance without the need to empty the tank

No clogging

High α-factor

Long lifetime of more than 20 years – based on working conditions of around 100,000 hours, as long as regular maintenance is performed

Low rotation of 35 – 120 rpms (depending BIOJET™ aerator size)

Spreading and separation of water drops for high oxygen absorption