The DAF process works by introducing pressurized wastewater into an environment at atmospheric pressure, causing the release of dissolved gases. The interaction between fine gas bubbles and suspended solids or oil droplets reduces the overall specific gravity of the particles, thereby enhancing their buoyancy and facilitating their separation from the water.

A typical Dissolved Air Flotation (DAF) system consists of several components, including a pump, water tank, air-water mixing tank (saturation tank), air supply piping, water distribution piping, inlet channels, compressor, effluent discharge channels, sludge discharge lines, an air flow control panel, and other supporting equipment.