Gas dissolving system, gas dissolving method and sewage treatment system

Abstract

In order to solve the technical problem that in the prior art, an air dissolving device for air flotation is low in air dissolving efficiency, the invention provides an air dissolving system, an air dissolving method, a sewage treatment system and an air dissolving system. The air dissolving system comprises a sealed tank body, a water outlet is formed in the tank body, and at least two air dissolving areas including an air dissolving water area and a specific surface area increasing area are arranged in the tank body; the specific surface area increasing area is arranged above the air dissolving water area, the sewage treatment system comprises an air flotation device, a filtering system and the air dissolving system, an air flotation releaser is arranged between a water outlet of the air dissolving system and a water inlet of the air flotation device, According to the air dissolving method, after the specific surface area of water is increased, the water meets high-pressure gas to form gas dissolving water, then gas is dissolved again through an aerator, and by means of the gas dissolving system, the gas dissolving method and the sewage treatment system, more gas can be dissolved, and thin bubbles are formed. The dissolving efficiency is high, the gas utilization rate is large, bubbles are tiny, and the air flotation effect is good.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an air-dissolving system, an air-dissolving method and a sewage treatment system. Background technique [0002] The air flotation technology is to introduce a large number of highly dispersed micro-bubbles into the water to be treated. The micro-bubbles are used as carriers to adhere to the particles or flocs suspended in the water to form a floating body with an overall density lower than that of water. The buoyancy of the water makes the suspension The particles float to the water surface, form scum and remove it, and complete the separation of particles or flocs in the water from the water. Among them, the gas-dissolving device is used to release water containing a certain pressure gas, that is, dissolved gas water, into the liquid to be treated to generate micro-bubbles. At present, air flotation equipment is widely used in the sewage treatment industry, specially u...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a dissolved air system, a dissolved air method and a sewage treatment system in view of the technical problem that the dissolved air efficiency of the existing air flotation device is relatively low.

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