The aeration effect of fish pond aerators

Release time:

2022-04-13

The aeration device for fish ponds prevents suspended particles in the pond water from settling, enhances the contact between organic matter, microorganisms, and dissolved oxygen in the water, and uses the movement of water currents—both upward and downward—as well as water splashing to drive harmful substances in the pond water to a supersaturated state, thereby achieving the goal of water purification. Like impeller aerators, during operation, gases dissolved in the water escape to the surface through splashing and continuous renewal of the liquid-air interface; the rate at which these gases escape is directly proportional to their concentration in the water. In other words, the higher the concentration of certain gases in the water, the easier they are to dissipate into the air once the aeration device is turned on.

　 　Fish pond aerator To prevent suspended solids in the pool water from settling, enhance contact between the water and organic matter, microorganisms, and dissolved oxygen, and utilize the up-and-down water movement and water splashing to drive harmful substances in the pool water into a supersaturated state, thereby achieving the goal of water purification. Similar to impeller aerators, during operation, dissolved gases in the water escape to the surface through splashing and continuous renewal of the liquid-air interface; the rate at which these gases escape is directly proportional to their concentration in the water. In other words, the higher the concentration of certain gases in the water, the easier they are to dissipate into the air once the system is started.

　　The purpose of using an aeration machine in fish ponds is to increase the solubility of gases—in particular, oxygen—both in terms of its concentration and its dissolution rate. Several factors influence oxygen solubility, including water temperature, salinity of the water, and oxygen partial pressure. As for the dissolution rate, it is affected by three key factors: the degree of oxygen saturation in the water, the surface area and method of contact between water and air, and the state of water movement. Among these factors, water temperature and salinity generally remain stable and are difficult to alter. The degree of oxygen saturation, however, is a variable that can—and indeed must—be adjusted. Therefore, to increase the oxygen content in the water, it is necessary to either directly or indirectly modify the oxygen partial pressure, the surface area and method of contact between water and air, and the state of water movement. Compared with other methods of surface aeration used in aquaculture, the primary advantage of microporous tube underwater aeration is its ability to deliver large amounts of oxygen into the lower layers of oxygen-depleted waters, ensuring that the air introduced into the water body is evenly distributed throughout all water layers. In other words, in the lower layers, toxic gases produced due to oxygen deficiency can be quickly dispersed into the atmosphere, thereby reducing noise pollution and minimizing interference with the normal activities of fish. The bubbles generated by microporous tubes are significantly smaller than those produced by small-, medium-, or large-scale aerators, as well as by conventional aeration devices such as air diffusers or stone-based aerators. The smaller the bubbles, the greater the gas-liquid contact area, the longer they remain suspended in the water, and the more effective the oxygenation process becomes. The above describes the aeration effect achieved by fish pond aeration machines.


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