In autumn, as the temperature difference between day and night increases, the water temperature of the aquaculture pond will also change dramatically. The upper and lower water layers will produce rapid convection, and the dissolved oxygen in the water will decrease rapidly. In case of continuous rain or fog, the light conditions are worse, the photosynthesis intensity of aquatic plants is weak, and the supplement amount of dissolved oxygen is reduced. However, the respiration of various organisms and the decomposition of organic matter in the pool water continue to consume a large amount of oxygen, making the dissolved oxygen in the water in short supply, thus causing the deterioration of water quality. However, after a long period of breeding period, reaching autumn, there are generally many residual baits and feces in the breeding pond, most of the pond water is heavily polluted, and some are even aging, which is not conducive to the growth of aquatic animals, and it is also very easy to cause various diseases. Therefore, it is necessary to strengthen the regulation and management of water quality and improve the breeding environment. In this season, the microporous oxygenation equipment(three blade roots blower) fully shows its characteristics and advantages of strong bottom oxygenation and up-down water exchange. In the alternate seasons of autumn and summer, the maintenance and use of microporous oxygenation equipment mainly include:

1. With continuous use from spring to summer, it is time for the equipment to be maintained. After startup, if the fan operates stably and the noise is normal, check whether the lubricating oil in the oil window is reduced? Add oil when there is a lack of oil, but the oil level should not exceed the center line of the oil window, and add enough grease in the grease fitting. If it is an old equipment that has been used for several years, or the fan vibrates violently and makes more and more noise after startup, it is necessary to dismantle the machine for inspection and replace the severely worn gears, bearings, oil seals and other components. In fact, attention should also be paid to the daily maintenance of the equipment, which can not only ensure the normal operation and use of the equipment, but also prolong the service life of the equipment.

2. After the microporous aeration tube has been immersed in water for more than half a year, it is inevitable that microorganisms and bacteria will breed on the pipe wall, which is what we usually call "pipe plugging". Here are two relatively simple dredging methods: one is high-pressure air scouring, tighten the plug of the aeration disk or aeration tube, start the micro air compressor, and use compressed air for scouring. It is better to do it in water, so that the progress of scouring can be observed. However, the inferior aeration tube with thin pipe wall and low tensile strength may burst when washed by high-pressure air. The second is the chemical immersion method. Immerse the aeration tube in hydrochloric acid diluent (concentration is about 1 ~ 3%) for 24 hours, and then take out clean water for washing. In this way, pay attention to the discharge of hydrochloric acid after use, so as not to pollute the environment.

3. In this season, attention should also be paid to the opening time of the microporous oxygenation equipment(three blade roots blower). The regular starting time is: midnight to sunrise; One to two hours at noon; One to two hours in the evening. Impellers and waterwheel type aerators cannot be started in the evening, because violent agitation of the water surface will cause a large amount of dissolved oxygen to escape, and on the contrary, it will cause hypoxia in the first half of the night. This phenomenon does not exist in the microporous oxygenation equipment(three blade roots blower). When it is opened at this time, it can effectively store dissolved oxygen, and ensure the biological respiration and organic matter decomposition in the breeding pool in the middle of the night. It must be opened in rainy days and when microbial bottoming is used.

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