The dissolved air flotation adopts a new and efficient dissolved air equipment - microbubble generator, which replaces the traditional air entraining equipment to dissolve air into water. Several inclined tube groups are installed in the air flotation area, including a box, a slag scraper, and a spiral discharger to form a complete air flotation water purification device.
working principle:
Under certain conditions, the air flotation device will dissolve a large amount of air in water to form dissolved air water. As the working medium, it will gather and decompress through the releaser, release quickly, and generate a large number of fine bubbles to adhere to the "alum flowers" of the wastewater after the coagulation reaction, so that the flocs will float up, so as to quickly remove the pollutants in the water and achieve the goal of water purification.
Theoretically, the treatment effect of air flotation is not directly related to the residence time, but only related to the area of air flotation. If the air flotation area in water depth H is reduced to water depth H/10, the air flotation distance and residence time will be reduced by 10 times, which is the famous "shallow pool theory".
The purpose of adding inclined pipes in the air flotation area is to increase the air flotation area, greatly reduce the Reynolds coefficient, avoid the air flotation in turbulent state, and create a good laminar state to achieve the effect of shallow air flotation.
Similarly, when the density of suspended solids is greater than 1, due to the installation of inclined tube banks, the effect of shallow tank sedimentation will be produced, so that sedimentation can be carried out under turbulent conditions. The pollutants with large particle size and high specific gravity that are not easy to float will be concentrated in the mud collection area to achieve the purpose of water purification.
Product characteristics:
1. Compact structure and small land occupation;
2. The production microbubbles are small and symmetrical;
3. Use performance to solve the problem of stable and reliable actual effect;
4. The installation is convenient, the actual operation is simple and easy to grasp;
5. The sludge concentration value is high, and the sludge production is small, which is convenient for dehydration;
6. Effluent effect is very good, the project investment is small, and the effect is good;
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