Dissolved Air Flotation

Air flotation is a process technology device to achieve solid-liquid separation or liquid-liquid separation. It’s mainly used to separate and remove suspended solid, colloid, oil or grease,algae and other substances in water with density close to or smaller than water.According to Henry's law, through the dissolving and releasing process of air flotation, the air flotation device can produce a huge amount of micro-bubbles with particle size of 3~30μm in water.After water or wastewater is coagulated or flocculated, the suspended solid or colloid in water forms large flocs, and after entering the air flotation device, the large flocs fully mix and contact with the micro bubbles, and form a floating body with less density than water after adhering to the micro bubbles, which floats to the water surface and is skimmed off by the scraper to achieve solid-liquid separation and purification of water quality.