Technology

Dissolved air flotation

Flotation is the most effective method of removing contaminants such as fats, suspensions, oil-derived substances and other undissolved substances found in industrial wastewater. The separation of these contaminants takes place in chemical processes using coagulants and flocculants (polymers). After separation, separation takes place using a water-air mixture in the flotation chamber. The resulting sludge is discharged outside the system and possibly dewatered before being disposed of, e.g. in a biogas plant.

Technology

Flow biological reactor

The classic flow biological reactor, also known as activated sludge reactor, is a wastewater treatment system based on the biological decomposition of pollutants by microorganisms. The process begins with the introduction of sewage into an aeration chamber, where it is mixed with activated sludge containing microorganisms. In this chamber, the sewage is aerated, which provides the oxygen necessary for the activity of microorganisms that decompose organic pollutants. Then the mixture of sewage and sludge flows into a secondary settling tank, where sedimentation takes place, i.e. separation of purified water from sludge. The purified water is discharged for further treatment or to a receiving water body. Part of the sludge is recirculated back to the aeration chamber to maintain the appropriate number of microorganisms, and excess sludge is removed. This cycle provides continuous and effective wastewater treatment, using natural biological processes.