The efficient shallow air flotation device integrates coagulation, air flotation, slag skimming, sedimentation, and mud scraping. The overall shape is cylindrical, with a compact structure and a shallow pool. The main body of the device consists of five parts: pool body, rotating water distribution mechanism, dissolved air release mechanism, frame mechanism, water collection mechanism, etc. The inlet, outlet, and scum discharge outlet are all concentrated in the central area of the pool body. The water distribution mechanism, water collection mechanism, and dissolved gas release mechanism are tightly connected to the frame and rotate around the center of the pool body. This device provides a complete set of equipment assembly and control system, which combines centralized control with decentralized control to achieve operational status of the equipment. The use of shallow air flotation equipment is one of the key projects in the water treatment process, with solid-liquid separation technology and its equipment being one of the key components. Air flotation is one of the effective methods for removing small suspended particles with a density close to water.

Process flow of efficient shallow air flotation device:

The raw water flows in through the central pipe at the bottom of the tank after coagulation and mixing. The floating slag on the water surface is collected by a skimmer and then discharged into the central sludge tank and the matching sludge device. The sludge settled at the bottom of the tank is collected by a scraper and discharged into the sludge discharge tank, while the clean water is collected and discharged by the central water collection mechanism. The well flocculated raw water refers to the raw water formed by adding flocculant PAC or PAM (PAC is 400-1000mg/I, PAM is about 1/5 of PAC) to the raw water, and after 10-15 minutes of effective flocculation reaction. The specific dosage and flocculation time, as well as the flocculation effect, must be determined experimentally. Efficient shallow air flotation devices are widely used in water supply and drainage treatment projects., Used for algae removal and turbidity reduction in tap water sourced from lakes; Secondly, it is applied to industrial wastewater treatment projects, such as petrochemicals, textiles, printing and dyeing, electroplating, leather making, food industry, and other fields; Thirdly, it is applied to the recovery of useful substances in wastewater, such as fiber recovery in papermaking and pulp water.

The efficient shallow air flotation device uses a dissolved air system to dissolve a large amount of air into the water, forming dissolved air water, which enters the water to be treated. After decompression and release, a large number of fine bubbles are formed in the water. The bubbles agglomerate and adhere to impurities in the water to form a float with a specific gravity smaller than that of water, which quickly floats to the surface. After being skimmed by a slag scraping device, the solid and liquid phases are separated, purifying the water quality.