- Aeration of waste water
- Aeration of drinking water
- Oxygen input into aeration tanks
- Oxygen input for sludge stabilisation
- Aeration of rivers and lakes
- Pre-treatment of industrial waste water
- Aeration of concentrate and leachate from biogas plants
- Aeration of constructed wetlands
- CO2 gassing for neutralization
- Ozone fumigation of process and waste water