Environment-friendly dissolved-gas gas floatation machine for treating sewage by mixing oxygen and ozone

Abstract

The invention discloses an environment-friendly dissolved-gas gas floatation machine for treating sewage by mixing oxygen and ozone. The environment-friendly dissolved-gas gas floatation machine for treating sewage by mixing oxygen and ozone comprises a baffling water inlet area, a gas floatation machine main body, a mixed reaction area and a gas floatation area; the baffling water inlet area is arranged at one end, near a third water pump, of the internal part of the gas floatation machine main body; the mixed reaction area is arranged on one side of the baffling water inlet area and in the gas floatation area; the gas floatation area is arranged on one side of the mixed reaction and in the gas floatation machine main body; a transmission caterpillar track is arranged at the top end in the gas floatation area; slag scraping plates are arranged on the surface of the transmission caterpillar track uniformly; a slag discharge port is formed in the middle position of one side, far away from the mixed reaction area, of the gas floatation area; and a sludge collecting groove is fixed in the outer wall of the gas floatation area and below the slag discharge port. A dissolved gas tank is arranged, mixed gas of oxygen and ozone is introduced into the dissolved gas tank, and the gas dissolution effect of the mixed gas of oxygen and ozone is better than that of the air, so that the gas floatation effect is better.

Description

Technical field [0001] The invention relates to the field of environmental protection equipment, in particular to an environmentally-friendly dissolved air flotation machine that uses oxygen and ozone to mix sewage treatment. Background technique [0002] The air flotation machine is trying to generate a large number of microbubbles in the water to form a three-phase mixture of water, gas and the removed substance. Under the combined action of various forces such as interfacial tension, bubble rising buoyancy and clean water pressure difference, it promotes After the fine air bubbles adhere to the removed oil droplets, they float up because the density of the adhesive is lower than the water surface, so that the suspended solids and oil particles in the water are separated and removed. The existing air flotation machine is not equipped with baffles. In the water inlet area, due to the high flow rate of the raw water, when the raw water is in direct contact with the dissolved gas,...

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Problems solved by technology

[0002] The air flotation machine tries to generate a large number of micro-bubbles in the water to form a three-phase mixture of water, air and the substance to be removed. After the fine bubbles adhere to the removed tiny oil droplets, they float up because the density of the bonded body is lower than the water surface, so that the suspended solids and oil particles in the water are separated and removed. The existing air flotation machine is not equipped with baffles In the water inlet area, due to the high flow rate of raw water, when the raw water is in direct contact with dissolved air water, tiny air bubbles will dissipate, which will affect the effect of air bubbles adhering to oil droplets and reduce the efficiency of air flotation treatment, and most air flotation machines are not installed Ozone aeration equipment, the content of organic matter in the water is too high, which cannot meet the requirements of environmental protection and water purification

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