Efficient air floatation device for sewage treatment

Abstract

The invention relates to an efficient air floatation device for sewage treatment. The efficient air floatation device for sewage treatment comprises a water inlet device connected with a booster pump,an air inlet device connected with an air compressor, and a chemical feeding device connected with a chemical adding pump, and further comprises at least two vortex mixers; the chemical feeding device comprises an anion flocculation box and a cation flocculation box; a cationic flocculant in the cationic flocculation box flows into a first-stage vortex mixer; an anionic flocculant in the anion flocculation box flows into a second-stage vortex mixer; fluid in the first-stage vortex mixer enters the second-stage vortex mixer through a connecting pipeline; fluid in the second-stage vortex mixeris discharged into the buffer pool through a water outlet, particles wrapped by bubbles rapidly float upwards, treated clear water is discharged through a baffle plate at the bottom, and floating sludge is scraped into a scum pool through a scum scraper at the top of the buffer pool. According to the invention, liquid, gas and chemical agent can be in full contact, the container is not limited ina sealing manner, and the application range is wide.

Description

technical field [0001] The invention relates to waste water treatment equipment, in particular to a high-efficiency air flotation device for sewage treatment. Background technique [0002] Traditional air flotation equipment is a type of air flotation device that passes through or generates a large number of fine bubbles in water, so that the air forms and attaches to the suspended particles with highly dispersed tiny bubbles, resulting in a state with a density lower than that of water, and uses the principle of buoyancy to make it float on the water surface. So as to realize the water treatment equipment of solid-liquid separation. [0003] However, the traditional air flotation covers a large area, consumes a lot of power, and the chemicals cannot be fully utilized. It has low or even no removal effect on some high-density and relatively large volumes, and the amount of dissolved air in water is limited. It is not suitable for concentration greater than 250-300mg. / L sus...

AI Technical Summary

Problems solved by technology

[0003] However, the traditional air flotation covers a large area, consumes a lot of power, and cannot fully utilize the chemicals. It has low or no removal effect on some high-density and relatively large volumes, and the amount of dissolved air in water is limited. It is not suitable for concentration greater than 250-300mg. / L suspended matter wastewater; another point is that a sealed container is required; the scope of application is narrow

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