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SeVAMI® Dissolved Air Flotation (DAF)

Flotation involves separation of solids from the water phase by attaching the solids to fine air bubbles to decrease density of the particles so that they float instead of sinking. The rising solids are called the "float". The float is skimmed off the surface and further processed in the sludge treatment.

SeVAMI-DAF system is specially designed for removal/recovery of solids, fat, oil, grease from wastewater and process water.

Flotation is ideal process for separation of less dense/ lighter solid impurities which includes Oil, Grease, Fats having tendency to float to the water surface. Such solids would either sediment very slowly or would remain suspended.

It is possible to separate them by increasing buoyancy of solids and this is the principle of Floatation process.

Using this principle, solid rises to the surface of water from where it can be skimmed off. Solid particles with densities heavier than water also get attached with air bubbles at some extend and are removed by flotation.