Gas dissolving system, gas dissolving method and sewage treatment system

A technology of dissolved air and water, which can be used in water/sewage multi-stage treatment, flotation water/sewage treatment, water/sludge/sewage treatment, etc., and can solve problems such as low dissolved air efficiency

CN113045075AActive Publication Date: 2021-06-29QINHUANGDAO TONGLIDA WATER TREATMENT EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-06-29

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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.
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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...

Examples

Embodiment Construction

[0041] The present invention will be further described below in conjunction with specific embodiment:

[0042] Such as Figure 2-4 As shown, the air-dissolving system provided by the present invention includes a sealed air-dissolving tank, the upper end of the tank body 9 is a specific surface area increasing area, the lower end is an air-dissolving water area 6, and an aerator 601 is arranged in the air-dissolving water area. The dissolved air system of the present invention is particularly suitable for air flotation.

[0043] The dissolved air water area 6 is provided with an aerator 601, and an air inlet 901 is provided on the tank body, which communicates with the inlet end of the aerator, and the outlet end of the aerator is located in the tank body. The air inlet 901 of the aerator communicates with the air outlet of the air compressor. The aerator is preferably an aeration tube, especially a microporous aeration tube. The microporous aeration tube preferably adopts t...