Shallow air flotation equipment

I. Purpose:

In water supply and drainage treatment processes, solid-liquid separation technology and equipment are among the key components. For the removal of tiny suspended particles with a specific gravity close to that of water, air flotation is one of the most effective methods.

    This equipment is widely used in water supply and drainage engineering. First, it is used in water treatment plants that use lakes as their water source for algae removal and turbidity reduction. Second, it is used in industrial wastewater treatment projects, such as in the petrochemical, textile, printing and dyeing, electroplating, leather, and food industries. Third, it is used for the recovery of useful substances from wastewater, such as fiber recovery from papermaking and pulp water.

II. Model Description:

III. Features:

1Effective water depth400~500mm。

2The hydraulic retention time in the pool is short.3~5min）。

3• High purification capacity, i.e., high surface load.

4It occupies a small area, has a light unit load, is assembled from all prefabricated components, does not require an operator's room, and can be installed in the air or combined in multiple layers.

5It has low installation and maintenance costs and is easy to clean.

6High purification level, with a removal rate of algae and other suspended solids reaching [percentage missing].90%The above concentration of concentrated sludge reached the above level.3~5%。

7The device adoptsBUTType of dissolved gas systemUnificationIt has a clever structure and high dissolved gas efficiency.Da90%Its volume is only one-fifth that of a typical dissolved gas system, and it possesses a superior anti-clogging capability that other dissolved gas devices do not have. 

IV. Structure and Working Principle:

    The equipment is cylindrical in shape, with a compact structure and a shallow pool. It includes the pool body, a rotating water distribution mechanism, a dissolved air release mechanism, a rotating frame, a water collection mechanism, a skimming mechanism, a dissolved air system, return water pipes, and an electrical control cabinet. The inlet, outlet, and sludge discharge outlet are all located within the rotating area of ​​the equipment. The water distribution mechanism, water collection mechanism, and dissolved air release mechanism are all tightly connected to the frame and rotate around the center of the pool body.

Air flotation separation technology refers to the separation of air and water.Under a certain working pressure, the gas is dissolved in the water to the maximum extent possible, striving to reach a saturated state. Then, the pressure dissolved gas water is released by decompression, generating a large number of microbubbles. These microbubbles come into full contact with the suspended flocs in the water, causing the suspended flocs to adhere to the microbubbles and float to the surface with them, forming scum. The scum is then scraped off, thereby purifying the water.

    Our company developedHighly efficientThe shallow air flotation device is an advanced rapid air flotation system. Based on traditional air flotation theory, it successfully applies the "shallow theory" and the "zero-speed" principle. Through careful design, it integrates flocculation, air flotation, skimming, sedimentation, and sludge scraping, making it a water purification treatment device.Highly efficientequipment.

five.Process flow diagram