Oxygen supplementation measures adopted for comprehensive fish overwintering include the following methods for supplementing oxygen in Shandong: 1. The biological oxygen supplementation method utilizes suitable low temperature and low light plankton under the ice to create conditions for its reproduction and growth, and photosynthesis for oxygen production to supplement the dissolved oxygen content of wintering pond water to achieve the purpose of safe wintering of fish. . This is the most economical, simple and effective method of supplementing oxygen in the wintering pond, but it is affected by the weather. It should be combined with biological aeration and mechanical oxygenation. 2. The water-injection and oxygen-inflation method utilizes the water source near the wintering pool of fish. When the wintering pond is deficient or lacks water, new water with high dissolved oxygen content is injected into the overwintering pool to increase the amount of water and dissolved oxygen in the overwintering pool waters. This is a good method of supplementing oxygen in the small overwintering pool and the large water leakage overwintering pool. However, when using groundwater to supplement oxygen, special attention should be paid to water quality, which must be aerated, oxidized and precipitated. 3. Circulating water supplemental oxygen method in the winter when the amount of water in the pool is sufficient or lack of overwintering sources of water overwintering pool, found that pool water anoxic can be used after the original pool water cycle method of supplementation of oxygen, the main methods are: pump pumping water circulation, use of slurry impeller Nourishment. The use of circulating water to replenish oxygen should be carried out in accordance with the principles of "early supplement, diligence, and supplementation". 4. Inflating and supplementing oxygen method Use the windmill or other power to drive the air pump to press the air into the hose set in the ice water. The air bubbles made by the sand filter diffuse into the wintering pond water to increase the dissolved oxygen content in the water. 5. During the overwintering period, some water-proof wintering ponds prefer to increase the dissolved oxygen content in the pool water by using ice-eyes. After experiments, it has been found that oxygen in the air diffuses into the water at a very slow rate. Therefore, Must be combined with other more effective methods of supplementing oxygen at the same time. 6. Chemical Oxygenation Method For small-scale water-proof wintering pools and greenhouse wintering pools, chemical oxygenation may be added during hypoxia. 7. The biochemical oxygenation method uses a variety of light sources to promote photosynthesis of phytoplankton in wintering pond water and increase dissolved oxygen content. Iodine-tungsten lamps, high-power lamps, etc. can be used as light sources to promote biological oxygenation. 8. The enhanced oxygenation method forcibly agitates oxygen and water in the air, and delivers high-oxygen water to the overwintering pool. For example, jet aerators, saturated aerators, etc., have an oxygen boost effect by inserting an air intake pipe in the water pipe of the pump. In addition, there are various oxygenation methods such as magnetization and oxygenation, actinic oxygenation, liquefaction and oxygenation, electrochemical oxygenation, physical and chemical oxygenation, and emulsification and oxygenation. In short, doing a safe wintering work for fish is a key step in improving the overall benefits, so we must continue to sum up experience. The local people summarized the overwintering rules of fish as "a snow-and-froth bubble, a winter fish is difficult to cricket; the snow in the sky will cover the ice and the fish will be hung; the spring will turn yang and the water will change to less oxygen; the oxygen will always catch the water. "All seasons are not slack, and Linhua's vigilance is high," which fully shows that fish must be well managed during the winter to ensure safe wintering of fish. Taiyaki Machine,Ice Cream Taiyaki Machine,Taiyaki Making Machine,Mini Taiyaki Machine Guangzhou New Power Catering Equipment Manufacturing Co.,Ltd , https://www.gznewpower.com
Oxygen supply method for wintering fishes