The fine bubble diffuser is an aeration device that disperses air into small bubbles by compressing air into an air chamber equipped with microporous aeration tubes, thereby fully mixing oxygen into the water. Its working principle is as follows: compressed air enters the water body through the microporous tubes, forming multiple small bubbles within the tubes, with bubble diameters ranging from 0.1 to 0.3 mm. Subsequently, the bubbles are mixed into the water, creating an oxygen-rich water body.
The suitable water depth for fine bubble diffusers is 2-5 meters. If the water depth is too shallow, it can lead to low dissolved oxygen content and uneven oxygen distribution, making aquatic organisms prone to suffocation and death. Conversely, if the water depth is too deep, the gas will be affected by water pressure, causing bubbles to grow larger and oxygen distribution to become uneven, which can affect the breathing of aquatic organisms. Therefore, when using fine bubble diffusers, it is necessary to select an appropriate water depth based on the actual situation.
The air supply volume of the fine bubble diffuser should be determined based on parameters such as the oxygen demand of the water body, water temperature, and pollutant density. In most cases, the air supply volume of the fine bubble diffuser is calculated as 1.2-1.5 times the oxygen demand. However, adjustments need to be made according to the actual situation in different usage scenarios.
The oxygen utilization rate of a fine bubble diffuser refers to the proportional relationship between the oxygen entering the water body and the oxygen required for biological metabolism in the water. A higher oxygen utilization rate indicates that the fine bubble diffuser effectively disperses oxygen into the water body, ensuring sufficient respiration for aquatic organisms and promoting the healthy growth of cultured organisms. The oxygen utilization rate of a fine bubble diffuser is mainly related to factors such as oxygen supply method, water depth, and oxygen supply volume. Generally, the oxygen utilization rate should be ensured to be above 50%.
The fine bubble diffuser is a common aeration device widely used in wastewater treatment, fish pond aquaculture, and other fields. By reading this article, you have gained a deeper understanding of the fine bubble diffuser, and we hope it can be of help to you.