Air dissolving method and application scope of each air flotation machine

The air floatation machine is a kind of equipment to remove the solid suspended matter, grease and all kinds of colloidal matters in various industrial and municipal sewage. The equipment is widely used in oil refining, chemical industry, brewing, vegetable oil production and refining, slaughtering, electroplating, printing and dyeing and other industrial wastewater and municipal sewage treatment.

At present, there are many kinds of air floatation machines in the industry, including electrolytic air floatation, bulk air floatation, dissolved air floatation, combined air floatation, high efficiency shallow air floatation, etc. The air dissolving mode of the horizontal flow pressurized air dissolving floatation machine is pressurized jet. This kind of air flotation is widely used in China at present, with relatively simple structure and simple field operation and installation. It is applicable to the pretreatment and partial subsequent treatment of various industrial and municipal wastewater.

The air dissolving mode of vertical flow pressurized air dissolving floatation machine is pressurized jet, which is rarely used in China at present. Due to the characteristics of complex structure, high height, and difficult operation and maintenance, the effect of vertical flow pressurized air dissolving floatation machine is greatly reduced compared with that of horizontal flow pressurized air dissolving floatation, and it only has advantages in floor space.

The air dissolving method of multiphase air floatation machine is negative pressure suction in front of the pump. At present, this kind of air floatation is widely used in China. Because it does not need air compressor and pressure vessel, it can basically replace the traditional pressurized air dissolving air floatation in the form of water pump, air compressor and air dissolving tank. Generally, imported air dissolving pump is selected.

High efficiency shallow air floatation machine adopts pressurized jet, which is widely used in China, especially in papermaking industry and other industries in recent years. Due to its complex structure and relatively high technical content, it is suitable for projects with large water volume, and GF type dissolved air floatation is recommended for water volume lower than 100t / H.