Principles of use of aquatic aerators
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The aquaculture aerator drives the working parts throug […]
The aquaculture aerator drives the working parts through a power source such as a diesel engine or an electric motor, so that the "oxygen element" in the air quickly enters the aquaculture water. The phenomenon of fish floating head caused by lack of oxygen can also eliminate harmful gases, promote convective exchange of water bodies, improve water quality conditions, increase fish pond activity and primary productivity, thereby increasing stocking density, increasing the feeding intensity of breeding objects, and increasing the yield per mu. Improve, fully achieve the purpose of breeding income.
The principles of using aquaculture aerators are mainly reflected in the following aspects:
(1) On cloudy and rainy days, the photosynthesis of phytoplankton is weak, and the dissolved oxygen in the pool water is insufficient, which is easy to cause floating heads. At this time, it is necessary to give full play to the mechanical oxygenation effect of the aerator, and start the aerator early at night to directly improve the dissolved oxygen in the pool water, and achieve the purpose of preventing and rescuing fish from floating heads. Avoid turning on the machine at noon on cloudy and rainy days. Turning on at this time will not only increase the dissolved oxygen in the lower water, but also increase the consumption of dissolved oxygen in the pond, which will easily cause fish to float.
(2) Start the aerator for 1-2 hours at noon on a sunny day, give full play to the water stirring effect of the aerator, increase the dissolved oxygen in the pond water, accelerate the circulation of pond materials, improve the water quality, and reduce the occurrence of floating heads. Be sure to avoid turning it on in the evening on a sunny day, which will cause the upper and lower water layers to convection in advance, increase the oxygen-consuming water layer and oxygen consumption, and easily cause fish to float.
(3) When the water quality is excessively fertilized after a large amount of fertilization, a combination of starting at noon on a sunny day and starting at early morning should be used to improve the dissolved oxygen conditions in the pool water and prevent floating heads. The use of aerators is not only related to the above weather, water temperature, and water quality, but also should be combined with the specific conditions of fish farming, according to the changing rules of dissolved oxygen in the pool water, and flexibly grasp the startup method and startup time, so as to achieve rational use, increase efficiency and increase production.
(4) In summer and autumn, the water temperature is high during the day, the biological activity is large, and the oxygen consumption is high. Generally, it can be turned on properly at dawn to increase the dissolved oxygen. If there is an omen of floating head, turn on the machine for emergency, can not stop until after sunrise, when there are no fish on the water surface.
In short, the principle of use of aerators: open at noon on sunny days, open in the morning on cloudy days, open in the middle of the night with continuous overcast and rainy days, not open in the evening, not open during the day on cloudy days, and open the floating head early; when the atmosphere is hot, the starting time is long, the weather is cool and the starting time is short, and the middle of the night Long start-up time, short start-up time at noon, long start-up time for large load area, short start-up time for small load area, to ensure timely oxygen increase.