Dissolved air flotation system is the large amount of fine air bubbles in the water, the air bubbles in the form of highly dispersed fine particles adhered to the suspension, resulting in a state of less dense than water, so that the principle of buoyancy floating in the water, in order to achieve a solid - Liquid separation water treatment equipment. Air flotation is divided into super-effect shallow air flotation, vortex-concave air flotation, and advection air flotation. At present, it has applications in water supply, industrial wastewater and urban sewage treatment. The advantages of air flotation are that its solid - liquid separation equipment has the characteristics of low investment, small floor space, high degree of automation, and convenient operation and management. It is suitable for the treatment of water bodies with a lot of algae.

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