Flotation is a separation process, which has wide industrial application of the separation of mineral ores, coal or waste water treatment. The separation process is based on the different wettability components in the mixture.

Flotation unit works on the principle of pressure flotation (DAF) - i.e. the dissolution of compressed air in the circulation circuit unit and its subsequent release in the main tank, thus creating the necessary amount microbubbles to each other on the way to bind a hydrophobic surface - poorly wettable particles called flocculus whose density is lower than the density of the surrounding liquid medium. These flocculus gather on the surface and in the intervals wiper and diverted to the thickening and homogenization tanks to drainage or further processing. Hydrophilic, well wettable components that are heavier than water to the bottom sediments and are diverted.