Air flotation separation technology refers to the process of dissolving air into water to the maximum extent possible under a certain working pressure, aiming for a supersaturated state. The resulting pressurized dissolved air water is then released by depressurization, generating a large number of microbubbles. These microbubbles come into full contact with oil and suspended flocs in the water, causing them to adhere to the microbubbles and float to the surface with the bubbles, forming scum. The scum is then scraped off, thereby purifying the water.