Air flotation is an abbreviation of air flotation machine , and it can also be used as a proper noun, that is, air flotation in water treatment is to form highly dispersed tiny bubbles in the water and adhere to the solid or liquid of the hydrophobic base in the wastewater. The particles form a water - gas - particle three-phase mixed system. After the particles adhere to the bubbles, they form flocs with an apparent density less than water and float to the water surface, forming a scum layer that is scraped off, thereby achieving solid-liquid or liquid-liquid separation process.

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