Daf is used for removing suspended matter that does not float or sink in water and waste water. Separation of suspended solids is done by fine gas bubbles which become attached to particulate matter, and float them to the surface where it is removed by skimming. Gas bubbles are introduced by reducing the pressure of the wastewater causing dissolved gases to be released. Commonly used to separate grease , oil and fat matters from industrial wastes.
Designs include Rectangular , circular , cross flow and inclined parallel plate systems

By the compressor,the air will be sent into air tank.Then it will be taken in air dissolved tank by jet flow device.In the dissolved tank,the air will be liquefied under 0.35Mpa pressure.Then the liquefied are will be sent to air flotation tank.When released suddenly, the air will be dissolved out and turn into a microbubble group.The group will meet the flocculating suspension in the sewage which is sent by pump and already medicated.It will be absorded in the flocculated suspension while slowly rising up.Along with reduction of the suspension's density,the suspension will go up to the water surface.Finally,the SS and CODcr will be removed. 

• Dissolved air pump edge bibulous the edge is inspiratory, pump pressurized mix within, gas to liquid efficient dissolving, small bubbles than 30 um.
• Low voltage operation, the dissolved gas efficiency is as high as 99%, release rate as high as 99%.
• Tiny bubbles and suspended particles of efficient adsorption, improve the SS remove effect.
• Dissolved gas water dissolving efficiency 80-100%, than traditional dissolved gas floating high efficiency three times.
• Pressure-capacity curve smooth, easy to achieve automatic control, easy to operate, easy maintenance, low noise.

Qingdao Yimei Environment Project Ltd. is found in 1988.We are located in the largest port city-Qingdao China. Our factary take up 36,000 square metres and there are more than 130 kinds machine for manufacturing. As a member of Shandong Province Environmental Protection Industrial Association, we have 360 staff and  72 experienced engineers.

Our main product is the equipment for Environment Protection and Waste Water Treatment.And the product is popular all over the world,such as Africa, North America,Domestic Market,Eastern Asia,Mid East.