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rrThis system is mainly used in papermaking, chemical industry, printing and dyeing, food, beer, pharmaceuticals, slaughtering, etc. Purification and treatment of industrial wastewater in the industry.
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The vortex concave air flotation (, ) system is the world's original patented water treatment equipment and the only one in the United States. Export recommended technologies from the Ministry of Commerce and the Environmental Protection Agency. It is a system specially designed for removing grease, colloids and suspended solids () in industrial and urban sewage.
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rr operating characteristics
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rr Vortex concave air flotation is an excellent sewage treatment technology and equipment innovation with reasonable design, easy operation and economical operation. It directly removes solid suspended solids from wastewater by air Create air flotation. The vortex aerator injects microbubbles directly into the sewage without the need to dissolve the air in advance, and then evenly distributes the microbubbles in the sewage through the diffuser impeller, so there will be no blockage during the entire operation, and it is more No equipment such as pressure dissolved gas, air compressor and circulation pump is required.
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rrThe untreated sewage first enters the air section of the aeration shell and is fully mixed with micro-bubbles. The microbubbles bring the solid suspended matter to the water surface during the rising process. The mud scraper moves along the liquid surface to scrape the suspended matter to the metal plate of the inclined material, and then pushes it into the sludge discharge pipe. There are The horizontal screw propeller sends the collected sludge to the sludge collector. The propeller and scraper are driven by the same motor. The power is only . horsepower. After purification, the sewage will pass through the overflow tank under the inclined plate before being discharged. The overflow tank is used to control the water level of the air flotation tank to ensure that the liquid in the tank will not flow into the sludge discharge pipe. Open pharyngeal flow The pipe extends from the aeration section along the bottom of the flotation tank. While generating microbubbles, the vortex aerator will extend in the pool with a return pipe. While generating microbubbles, the vortex aerator will extend in the pool with a return pipe. A negative pressure zone is formed at the bottom of the tank. This negative pressure will cause the wastewater to flow back from the bottom of the tank to the aeration zone, and then return to the flotation section. This process ensures that air flotation continues even when there is inflow.
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rr working principle:
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rrThe pretreated sewage flows into the small aeration section equipped with a vortex aerator. During the rising process, the sewage passes through the aeration section and the microorganisms generated by the aerator. The bubbles are thoroughly mixed, and the aerator transfers the air on the water surface to the water through the exhaust pipe. The working principle of the aerator is to use the high-speed rotation of the diffuser impeller at the bottom of the air delivery pipe to form a vacuum zone in the water. The air on the liquid surface is input into the water through the aerator to fill the vacuum, and microbubbles are generated and rise spirally. When you reach the surface of the water, the oxygen in the air also dissolves into the water.
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rr Due to the density imbalance between the gas-water mixture and the liquid, a vertical upward Buoyancy will bring it to the surface. During the floating process, microbubbles will adhere to the surface, and after reaching the water surface, they rely on these bubbles to support and maintain the water surface. Those floating on the water are intermittently removed by chain scrapers. The sludge scraper moves along the entire liquid surface and pushes the sludge discharge pipe from the inlet end of the air flotation tank to the outlet end. There is a horizontal screw propeller in the sludge discharge pipe to send the collected sludge into the sludge collection tank. The purified sewage flows into the overflow tank and then flows to the biochemical treatment section.
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rrThe open return pipe extends from the aeration section along the bottom of the flotation tank. While generating microbubbles, the vortex aerator will form a negative pressure area at the bottom of the pool with a return pipe. This negative pressure will cause the wastewater to flow back from the bottom of the pool to the aeration area, and then return to the flotation section. This process ensures that the air flotation section can still work even if there is about % sewage backflow and no water inflow.