Several methods for keeping the DAF in excellent condition
Dissolved air flotation is a common sewage treatment device, which works well to remove impurities. But how to keep the DAF in good working condition is a problem faced by many users. I will show you how to do this through this article.
1. One of the factors affecting the DAF effect is the degree of reaction between sewage and chemicals. Full mixing of the flocculant with the sewage will improve the effect of the air float.
2. Proper stirring speeds and mixing times can further improve the flocculation reaction. Therefore, the stirring speed and time should be mastered.
3. As we all know, the principle of the air flotation machine is to use the releaser to release the dissolved air water to generate fine bubbles, and then let the bubbles attach to the suspended substance to form a mixture of with lower density than water, and then float to the water surface to achieve the effect of solid-liquid separation. It can be seen that air bubbles are very important for air flotation machines. The proper amount and size of air bubbles directly affects the wastewater treatment effect.
4. For a pressurized dissolved air flotation machine, the dissolving air pump requires a large amount of electricity to produce the dissolved air water. Choosing a reasonable pressure will not only effectively reduce power consumption and hence operating costs, but also further improve water quality.
5. In addition to the choice of an appropriate pressure, there is another quantity which needs to be reasonably planned for, and that is the quantity of air to be injected, which in general needs to be a little larger than the solubility of air in water. In this way, it is more appropriate to have the air in the water in a super-saturated state.
6. The flow state of the raw water must be appropriate. The flow state of the raw water has a relatively large effect on the floating velocity of the floating object. It is better to keep the source flow state in a turbulent state, in order to benefit the flow object.
7. A final approach is to use experimental methods to measure the reflux ratio of raw water under various conditions to determine a reasonable flow rate.
Here are a few ways to keep a dissolved air flotation machine in good condition. Those interested can follow the website, which we will update daily.