Vortex concave air flotation machine to realize dissolved air flotation

Abstract

The invention relates to a cavitation air floatation machine achieving dissolved air flotation. The machine is characterized by comprising a box body, an aeration device, a slag scraping device and aslag collection box, wherein the upper portion of the box body is provided with an opening, one side of the box body is provided with a water inlet, and the other side, away from the water inlet, of the box body is provided with a water outlet; the aeration device comprises a steel tube, the steel tube is horizontally arranged on the bottom of the box body and close to the water inlet, the steel tube is provided with a plurality of micropore aeration heads and an air inlet pipe, an air compressor is arranged outside the box body, and the air compressor is connected with the air inlet pipe; theslag scraping device is arranged on the top of the box body, and comprises a driving device, a chain and a scraper blade arranged on the chain; the slag collection box is arranged at one side of theslag scraping device and close to the water outlet and used for collecting impurities scraped by the scraper blade and discharging the impurities. The cavitation air floatation machine achieving the dissolved air flotation has the advantages that a large amount of micro bubbles are generated by the micropore aeration heads arranged on the bottom of the box body and have large pressure, the micro bubbles drive suspended matters to float upward when rising upward, and the high removal rate and low running cost of the effluent suspended matters are achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to a vortex concave air flotation machine for realizing dissolved air flotation. Background technique [0002] The vortex concave air flotation machine is specially designed to remove grease, jelly and suspended solids (SS) in industrial and urban sewage. While the vortex concave air flotation machine is still widely used, the second-generation dissolved air flotation machine has become a star in the market and is widely sought after, but the high price makes many small and medium-sized enterprises hesitate; in order to meet market demand, some enterprises Transformation of the vortex concave air flotation machine, such as setting up a large air compressor, pumping compressed air into the storage tank, pumping in the part of the air flotation water from the bottom of the tank through a pipeline pump, water and high-pressure air are fused in the tank and passed thr...

AI Technical Summary

Problems solved by technology

While the vortex concave air flotation machine is still widely used, the second-generation dissolved air flotation machine has become a star in the market and is widely sought after, but the high price makes many small and medium-sized enterprises hesitate; in order to meet market demand, some enterprises Transformation of the vortex concave air flotation machine, such as setting up a large air compressor, pumping compressed air into the storage tank, pumping in the part of the air flotation water from the bottom of the tank through a pipeline pump, water and high-pressure air are fused in the tank and passed through the pump Enter the air flotation inlet pipeline to achieve the effect of dissolved air, but the water outlet effect is not ideal, and the air flotation removal rate is not high; the dissolved air flotation requires a relatively high pressure, generally not less than 0.4MPa, and it is difficult to achieve continuous stability when the tank is large High-pressure dissolved gas effect, high equipment investment cost, unstable operation, high operating cost of newly added pumps, and the expected effect cannot be obtained

Images