1、 Overview of dissolved air flotation equipment:
The dissolved air flotation machine uses clean water or partially treated reflux water, which is sucked in and mixed by a microbubble generator to form dissolved air water. The air dissolved in the water is released under reduced pressure in the flotation tank, and the air in the dissolved water forms 20-30 μ m bubbles, which have high surface area adsorption capacity and can effectively remove suspended solids in different concentrations of sewage. After treatment, some of the clean water (with a design index of 20-40%, usually 30% can be used) is pressurized by the air flotation circulation pump and mixed with air in the dissolved air tank. The air dissolves into the water, and the dissolved air efficiency reaches over 80%. The air dissolved in water is released from the water, forming microbubbles with a particle size of 20-50 μ m. The microbubbles combine with suspended solids in the sewage, reducing their specific gravity until they float to the surface of the water; A large amount of floating slag is formed, which is then removed by a chain scraper installed on the air flotation tank to achieve the desired treatment effect.
IIDissolved gasAir flotation machinedeviceMain structural description:

1. Air flotation system
The air flotation system integrates water intake, flocculation, separation, water collection, and effluent. Similar to traditional air flotation equipment, it is equipped with a stable flow chamber and a dissolved air release chamber, making the treatment performance more stable and the effect more superior.
Stable chamber: The raw water reacted through folded plates has a high flow rate. If it comes into direct contact with dissolved air water, it will dissipate small bubbles, affecting the adhesion of bubbles to flocs and reducing the efficiency of air flotation treatment. If a stable flow chamber is added, the kinetic energy of turbulent raw water will be consumed and enter the dissolved air water release chamber at a uniform speed, effectively ensuring the removal effect.
Dissolved gas release chamber: The dissolved gas release chamber and the separation chamber are located in the same tank. Separated in the middle, the dissolved water and the flocculated raw water adhere here, slowly rise, and enter the air flotation separation chamber, ensuring the contact space and time between the floc and the small bubbles, resulting in a release rate of 80-100% for the dissolved water
2. Dissolved gas system
For air flotation equipment, the dissolved gas system is like the "heart" of the air flotation equipment and the most important component of the air flotation equipment. At this stage, gas and water are sucked in together at the inlet of the pump, and mixed into dissolved gas and water through shear and pressure. The gas-liquid phase is fully mixed and reaches saturation. The maximum gas content of the entire dissolved gas system is 10%, and the solubility of the gas is 100%, making the distribution of microbubbles during gas dispersion uniform, with an average bubble diameter of less than 30um. This dissolved gas system is an improvement and technological innovation of traditional air flotation, which improves the separation efficiency of air flotation and greatly reduces the production and operation costs of the equipment.
3. Scraper machine
The operation mode and speed of the scraper directly affect the water quality of the air flotation effluent and the solid content of the sludge. The system adopts a rotary scraper, which can continuously and uniformly scrape the floating slag into the floating slag tank, reducing the phenomenon of collision between floating slag; In addition, the height adjustable scraper can better adapt to various operating conditions and reduce the moisture content of sludge.
4. Control system
The control system adopts advanced electrical components (Delixi or Chint) to ensure the long-term effective operation of the equipment.
5. Supporting equipment
Air flotation agents and dosing equipment are also important factors in ensuring treatment effectiveness. We can provide matching dosing equipment and optimized combination agents according to the needs of users.
3、 Functional features:
1. The dissolution pump sucks in water while sucking, and the pump is pressurized and mixed with high gas-liquid dissolution efficiency, with fine bubbles ≤ 30um.
2. The dissolved air pump can replace complex systems composed of circulating pumps, air compressors, dissolved air tanks, jets, and release heads.
3. Low pressure operation, with a gas dissolution efficiency of up to 99% and a release rate of up to 99%.
4. The efficient adsorption of microbubbles and suspended particles improves the removal efficiency of SS.
5. The dissolution efficiency of dissolved air and water is 80-100%, which is three times higher than that of traditional dissolved air flotation.
6. The pressure capacity curve is flat, easy to achieve automatic control, easy to operate and maintain, and has low noise.
4、 Scope of application:
Paper wastewater treatment and fiber recycling;
Printing and dyeing wastewater treatment;
Treatment of wastewater containing various heavy metal ions such as electroplating;
Oil containing wastewater treatment;
Leather wastewater treatment;
Chemical wastewater treatment;
Paint wastewater treatment;
Food wastewater treatment;
Acid pickling and phosphating wastewater treatment;
Separation of sludge and water from biological treatment;
Low temperature and low turbidity surface water treatment;
Municipal wastewater, chemical industry, beverage industry, oil refining industry, food industry, textile industry, slaughter industry, dairy industry, etc., involving applications in suspended solids separation, oil-water separation and purification, coagulation reaction floc separation, activated sludge separation, etc.
5、 After sales service commitment:
1. Our company fully implements the "three guarantees" policy, with a term of one year. If there are quality problems with the product within one year, our factory provides repair, replacement, and refund services. After the "three guarantees" period, if the parts are damaged and need to be replaced, our factory will only charge the cost of the parts.
2. Our company provides 24-hour technical consulting services. Professional technicians are available at any time to provide technical services such as installation, debugging, and maintenance. Users can contact our company at any time. Our company will provide you with the fastest and most thoughtful service to solve your problems in a timely manner.
3. For users who use our company's products, we will conduct regular follow ups and retraining every quarter, and they can also enjoy free maintenance at least once a year.
4. If there are any shortcomings in our service, you can call or write to complain and provide your valuable opinions and suggestions to improve our service. We would like to express our sincere gratitude for this!