Working principle
Superficial DAF system, also known as circular shallow DAF system. It is the main treatment device in the water purification system. Mainly used to remove SS - suspended solids and reduce COD in wastewater. Working principle The paper mill surface DAF is designed according to the principle of zero speed and the theory of shallow pool.
First of all, the depth of the tank is only 750-950mm. The influence from the balance tank is pumped into the circular DAF tank after coagulation and flocculation. The rotating system of the distributor, scum separator and collection tube is driven to rotate counterclockwise, while the influence is clockwise. In this way, the water velocity in the tank is relatively zero. The micro-bubbles produced by the Superficial DAF system mix the flocs and float to the surface. The tank depth is only 750-950mm, which can effectively separate liquids and solids. The scum is scraped by rotating skimmers into the central scum chute and falls into the sludge pond downstairs. Clean water is collected and flows into the clean water tank. The electric cabinet controls all the components, and it only takes 3-5 minutes to purify the waste water.
