The selection of air flotation equipment is based on the situation of water source and the treatment capacity. Air flotation equipment belongs to sewage pretreatment, which is the biochemical front end, and is one of the current effective sewage treatment equipment. There are a variety of types of air flotation machine, such as horizontal flow dissolved air flotation machine, vertical flow dissolved air floatation machine, shallow air floatation machine, concave air floatation machine and so on. Therefore, consumers need to understand the purchase method of the air floater before purchasing.

The choose and purchase of air flotation equipment, generally is to determine which kind of air flotation machine to use first, and air flotation technology, is pressure dissolved air flotation, or concave air flotation, and then, according to its specific design to choose the type, so as to choose the appropriate specifications. As for pressure gauge, liquid level gauge and thermometer, these factors can also have a certain role in the purchase of air flotation equipment.

For the horizontal flow floating machine, the calculation of its handling capacity should be based on the number of cubic meters per hour to calculate. Why is horizontal air flotation better than vertical air flotation？ This is because the structure of vertical flow air flotation equipment is complex and the use effect is not very stable, and the cost is high, so in general, it is not as good as the horizontal flow air flotation equipment.

Air flotation equipment is very flexible in application because it can be adjusted according to different USES. For example, in pretreatment, it is usually after the regulating pool and before the biochemical pool. However, in deep processing, it is usually behind the biochemical secondary pool, usually its position can be variable.