Dissolved air flotation can be divided into distributed air flotation, electrical flotation, biological and chemical flotation, and dissolved air flotation.

1. Cloth air flotation method (dispersed air flotation method). This method uses a mechanical shearing knife to pulverize the air mixed in water into fine air bubbles. For example, the suction air flotation of the water pump suction pipe, the jet air flotation, the diffuser aeration air flotation and the impeller air flotation, etc., all belong to this category.

2. Electric float method (electrolytic condensation air float method). In this method, positive and negative electrodes are set in the water. When the direct current is applied, the initial ecological micro-bubbles are generated on one electrode (cathode), and at the same time, effects such as electrolytic coagulation are also produced.

3. Biological and chemical air flotation. The method utilizes the action of organisms or releases gas after flocculation with chemical agents in water.

4.Dissolved air flotation (dissolved air flotation). In this method, the gas and liquid are fully mixed in the bronze gas-liquid mixing pump under a certain pressure, so that the air is dissolved in the water and reaches a saturated state, and then the air flotation is achieved. Dissolved air flotation is divided into two types: pressure dissolved air flotation and dissolved air vacuum flotation, according to the pressure at which the bubbles separate out of the water. Dissolved air vacuum flotation is used only in special cases. For example: when the medium is under a certain pressure, it is easy to cause danger and denaturation, etc., only use the vacuum flotation machine.

https://www.khnwatertreatment.com/