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Decompression requirements of Dissolved Air Flotation Unit and bubble size

Aug 21,2021

Air flotation mainly produces a large number of fine bubbles in the water in the air containing system, which will make the air effectively adhere to the suspended particles in the form of highly dispersed tiny bubbles, which will directly cause its density to be less than that of water.


Air flotation mainly uses its buoyancy principle to make it float on the water surface, which will effectively realize its solid-liquid separation water treatment equipment to a certain extent. Air flotation can be effectively divided into super-effective shallow air flotation and advection. Type air flotation, vortex-concave air flotation and other forms.


Air flotation is currently used in water supply, industrial wastewater and urban sewage treatment. The advantages of air flotation are mainly that its solid-liquid separation equipment has low investment and small footprint, the entire equipment is highly automated and easy to operate and manage Features.


Air flotation is mainly due to the difference between hydrophilic and hydrophobic on the surface of other suspended matter. This hydrophobic surface is more prone to bubbles, so we can use its float method for processing during use. This The method is actually to let water into the gas.


Air flotation will effectively release bubbles when decompression. Hydrophilic is treated with corresponding chemicals. After treatment, it will turn into hydrophobic. When water treatment, we often use it. Coagulant, his flocs are good at trapping bubbles.


The size of the air-floating bubble is also related to the strength suitable for the tension released in the air. If the radius of the bubble is smaller, then the pressure will be greater. Among the air molecules in the bubble, it will produce the bubble film. The more chances of collision.

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