The dissolved air floatation machine is a kind of solid-liquid separation equipment commonly used in the sewage treatment industry, which can effectively remove suspended solids, grease, and gum substances in the sewage, and is the main equipment for sewage preliminary treatment. The dissolved air floatation machine is widely used in the sewage treatment of petroleum, chemical industry, printing and dyeing, paper making, oil refining, leather, steel, mechanical processing, starch, food, etc. The dissolved air flotation machine is mainly divided into horizontal flow type and vertical flow type according to the structure.

The dissolved air flotation machine is suitable for treating water with low turbidity, high color, high organic content, low oil content, low surfactant content or algae rich water. Compared with other air flotation methods, it has the advantages of high hydraulic load, compact tank, etc. However, its application is limited by its complex process, large power consumption, and loud noise of air compressor.

Air flotation machine application:

Separation of fine suspended solids, algae and micro aggregates in surface water; Recycle useful substances in industrial wastewater, such as paper pulp and fillers, to replace the secondary sedimentation tank for separation and concentration of excess sludge. It is especially suitable for those biochemical treatment processes that are prone to sludge bulking, separating and recovering suspended oil and emulsified oil in oily wastewater, and separating and recovering substances in ionic state, such as surfactant and metal ions.

Principle of air flotation machine:

Air flotation, also known as air flotation, is a commonly used flotation method in wastewater treatment. Air flotation uses micro bubbles formed by instantaneous release of air compression or mechanical shearing for flotation. The commonly used bubble formation methods can be divided into suction air flotation of pump suction pipe, diffusion plate aeration air flotation, jet air flotation and impeller air flotation machine.

The dissolved air floatation machine dissolves a large amount of air into water under the pressure of 2.5-4kg/cm2 to form dissolved air water. As the working medium, the releaser suddenly depressurizes and rapidly releases, generating a large number of fine bubbles to adhere to the "alum flowers" in the wastewater after the coagulation reaction, so that the flocs can float up quickly, so as to quickly remove pollutants in the water and achieve the purpose of water purification. It is mainly used to remove SS in the wastewater, At the same time, insoluble COD is reduced. In recent years, dissolved air flotation technology has been widely used in water supply and drainage and wastewater treatment. It can effectively remove light floating flocs that are difficult to precipitate in wastewater. Large processing capacity, high efficiency, less land occupation and wide application range. The dissolved air flotation machine is widely used in the recovery of white water pulp and clean water in papermaking; Removal of various heavy metal ions; Separation of refinery wastewater and oil pollution; Removal of impurities from tanning wastewater; Chromaticity and impurity removal of printing and dyeing wastewater; Solid liquid separation of sludge and membrane after various biological treatment.

Features:

1. The dissolved air pump absorbs water and air at the same time. The pump is pressurized and mixed, with high gas-liquid dissolution efficiency, and fine bubbles ≤ 30um. Air flotation machine

2. The dissolved air pump can replace the complex system composed of circulating pump, air compressor, dissolved air tank, jet ejector and release head.

3. Under low pressure operation, the gas dissolving efficiency is up to 99%, and the release rate is up to 99%.

4. The efficient adsorption of micro bubbles and suspended particles improves the removal effect of SS.

5. Dissolving efficiency of dissolved air water is 80-100%, 3 times higher than that of traditional dissolved air flotation.

6. The pressure capacity curve is flat, easy to realize automatic control, easy to operate and maintain, and low noise.

Note: You can write to us or leave a message at any time to get technical support or solutions.

Email: info@tnwcn.com

Feedback: Click here