A Polish SME has developed a new method for water oxygenation. A high level of water and wastewater oxygenation has been reached owing to a great contact surface changing speed at the water/air interface. The system developed by this SME does not require any additional mechanical or electrical devices as long as a suitable difference level exists between an inlet of water or wastewater for the column and the water outlet of the column. The SME is looking for a partner in the chemical industry.

A Polish SME has developed a new method for water oxygenation, the main part of which is a column with a circle or a square cross-section. The column construction is of the openwork type. A metallic packing of the column, the Bialecki rings, can be introduced to the column in bulk or placed in packets. The rings are made of different materials including stainless steel, copper or aluminium. They can be of various sizes in diameter (from 12 mm to 50 mm). The packing rests on a grate situated a little higher above the water outlet level of the column. Openwork sidewalls secure free access to air for the whole volume of the packing, whereas a multilevel liquid distributor evenly spreads the liquid on the surface of the rings. Operating conditions are individually chosen for each column according to the value of some initial parameters such as: flow rate, level of water or wastewater contamination, and the desirable degree of water oxygenation.
A high value of a mass exchange coefficient is possible because the run-off of liquid is turbulent in a thin film created on the rings. The interface is not only well developed but also continuously renewed. The oxygenation system constructed in the SME "CEBEA" has found an application for:
- Oxygenation of water delivered to nursery ponds, especially for trout
- Oxygenation of watercourses
- Oxygenation of water from mechanical wastewater purification plant
- Oxygenation of cooling waters before introduction to receiver e.g. a lake

Innovative Aspects:
The described system can work without consuming any electric energy. The column with the Bialecki rings does not require any additional mechanical or electrical installations if there is a sufficient difference in level between inlet and outlet of the column. When that condition is impossible to respect, an additional investment outlay is needed for power supply and installation of a feed pump.

Main Advantages:
- High efficiency of the device
- Failure-free and service-free work when a level difference between inlet and outlet of the column was at least about 2 m
- Adequate degree of water oxygenation (about 90 % of an equilibrium value) when the height of the packing in the column is comprised between 1.5 and 2 m
- Possibility to apply the system for a wide range of flow rates
- Relatively small area occupied by the device

• Recycling, Recovery

• Environment protection

• Other Energy
• Water treatment equipment and waste disposal systems

• Commercial Agreement with Technical Assistance
• Manufacturing agreement (Subcontracting & Co-contracting)