Biological Process Intensification

The capacity of an existing wastewater treatment plant can be increased without cost-intensive expansion or construction measures, up to a doubling of the degradation performance. The use of pure oxygen enables high biomass concentrations (MLSS up to 30g/l) in the aeration process. The oxygen supply required for this can be easily realized without additional energy input.

One of the most important properties of pure oxygen biology is its extraordinary flexibility in the event of changing loads. In all operating conditions, the optimum oxygen supply ensures precise adjustment of the O₂ input to the actual demand.

Conventional wastewater treatment plants use oxygen from the air by introducing it into the wastewater using surface aerators or as compressed air.
The consequences are: The stripping of microorganisms and volatile organic compounds (VOCs), the development of odors and the release of toxic substances.

The Mizu LCO® pure oxygen feed systems from Nippon Gases enable oxygen utilization of more than 90 %. In this way, the unused gas volume flow is drastically reduced. Secondary emissions, which additionally pollute the environment of the wastewater treatment plant, are avoided.

- Reduced space requirement due to more compact design (by more than 50 % with the same degradation capacity)
- High specific oxygen input capacity (up to 5 kg O₂/kWh)
- Improved sedimentation behavior of the sludge (up to 2.5 times higher sedimentation speed)
- No noise emissions