First of all, the air flotation machine forms the microfoam particle size and durability depending on the use conditions of the air release size and the surface tension of the water. The surface tension of the air flotation machine is equal to the force in the opposite direction , respectively, in the contact part of each surface of the character , and its action direction is always tangent to the liquid surface. The smaller the bubble radius , the extra pressure of the air molecules in the bubble , and the more serious the probability of bubble collision. So to obtain a stable micro-bubble , bubble film strength is ensured.

The foam is small , the floating speed is fast , the water disturbance is small , and the flocculated particles will not collapse. and can increase the collision probability of foam and flocculated particles. But not the thinner the foam the better , the foam affects the float speed and air float pond size and project cost. In addition, the additive amount of surfactant can effectively reduce the surface tension coefficient of water and enhance the film fastness of foam , and r is also smaller. Soluble inorganic salts in water are aggravated , which can weaken the fastness of the bubble film and make the foam easy to burst or expand.

When micro-bubble particles appear in the air flotation machine, the above methods can be used to deal with them.

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