Dissolved air releaser and dissolved air flotation water purification system

Abstract

The invention discloses a dissolved air releaser and a dissolved air flotation water purification system. The dissolved air releaser comprises an upper disc and a lower disc, a plurality of upper ringgrooves which are sequentially distributed outwards in the radial direction are formed in the bottom surface of the upper disc; the upper surface of the lower disc is provided with a plurality of lower annular grooves which are sequentially distributed outwards in the radial direction; at least a first chamber, a second chamber and a third chamber are formed; a large amount of pressure gas dissolved water is generated in a gas dissolving cavity; when the pressure gas dissolved water enters a corresponding chamber from a gap, the flow velocity of the pressure gas dissolved water in the chamberis increased, strong turbulence is generated, then, the pressure gas dissolved water flow can be quickly narrowed to enter the gap, the pressure increased sharply, the turbulence is more violent, thepressure gas dissolved water enters the chamber again after passing through the gap and is released from the water outlet after passing through the first chamber, the second chamber and the third chamber in sequence, the instant energy dissipation effect can be achieved, meanwhile, a large number of fine bubbles are generated and released in all directions by 360 degrees, large-flow release of the fine bubbles is achieved, and the structure is more practical and reliable.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a dissolved air releaser and a dissolved air flotation water purification system. Background technique [0002] The dissolved air flotation water purification method is to release the pressure dissolved air water produced by the dissolved air system through the release device, and introduce the fine bubbles into the water to be treated, and use the buoyancy of the bubbles attached to the solid impurities to achieve rapid separation of solid and liquid , and improve the purpose of scum concentration. The dissolved air releaser is the key device in the dissolved air flotation water purification system. The pressure-dissolved air water can only release the fine bubbles after the pressure is reduced and the energy is dissipated by the releaser. The performance of the releaser is related to the fineness of the bubbles, which directly affects the effect of air flotation water...

AI Technical Summary

Problems solved by technology

[0003] The existing dissolved air releaser usually uses multiple nozzles to discharge water, so that the water can be evenly distributed. Although multiple nozzles can be installed, due to the limitation of the nozzle aperture, the water flow rate of the dissolved air releaser is small, and the air flotation method The efficiency of water purification is low, and it is suitable for small-capacity air flotation tanks

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