How to turn the waterwheel aerator into a "production machine"?
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Through the use of waterwheel aerators in recent years, […]
Through the use of waterwheel aerators in recent years, the editor of the aerator manufacturer found that many fishermen have two directions when turning on the aerators: one is that the aerator does not stop for 24 hours; the other is that they cannot see Floating head will not start. In fact, the above two startup methods are definitely unreasonable. If the aerator is turned on 24 hours a day, it is a waste of electricity. Once the aerator stops unexpectedly, it is easy to produce hypoxia floating head. If the floating head is not turned on, it is obvious that the aerator is regarded as a life-saving machine and cannot play its due role.
First of all, according to the main reasons for hypoxia caused by different weather, the aerator should be used reasonably according to the working principle of the aerator. On a sunny morning, the main reason for the lack of oxygen is that the dissolved oxygen in the upper and lower water layers changes greatly during the day, while the temperature and density of the lower water layer are higher, the upper water temperature is high, and the density is small, the upper and lower layers cannot be convected in time, and the upper and lower layers cannot be used for supersaturation. Oxygen, supersaturated oxygen will escape from the water surface and be wasted. However, due to the large oxygen consumption in the lower layer, the surface water temperature drops at night, and when the density increases, the upper and lower layers of water are easily affected, which deteriorates the dissolved oxygen condition of the entire water layer and causes floating heads.
To start the machine at noon on a sunny day is to use the combination of biological oxygen production and mechanical oxygen delivery, make full use of the supersaturated oxygen in the upper layer, and use the water stirring effect of the aerator to artificially overcome the thermal resistance of the water, so that a large amount of phytoplankton photosynthesis in the upper layer is generated. The supersaturated oxygen is transported to the lower layer, and the dissolved oxygen in the lower layer water is replenished in time to reduce the oxygen consumption of the lower layer water. At this time, although the amount of dissolved oxygen in the upper layer of water is lower than that before the machine is turned on, the dissolved oxygen in the upper layer can still be saturated through algal photosynthesis in the afternoon. After the natural convection of the pool water at night, the dissolved oxygen in the upper and lower water layers can still maintain a high level, which can alleviate or eliminate the threat of floating fish to a certain extent.
It can not only prevent or reduce the floating head of fish, but also promote the decomposition of organic matter and the reproduction of plankton, and accelerate the material circulation in the pond. Therefore, in the main growing season of fish, we must seize every sunny day, insist on turning on the aerator at noon, make full use of the supersaturated oxygen in the upper water body, and seize the initiative to improve the water quality.
The lack of oxygen in cloudy and rainy days is due to the weak photosynthesis of phytoplankton, low oxygen production and high oxygen consumption, resulting in insufficient supply of dissolved oxygen and floating fish heads. At this time, it is necessary to give full play to the role of the aerator, and use the floating head forecasting technology to increase oxygen as soon as possible. Before the fish head floats, the machine must be started to directly increase the low peak value of dissolved oxygen to prevent and rescue the fish head from floating.
The waterwheel type aerator is turned on in the evening on a sunny day, which makes the upper and lower water layers convect in advance, but increases the oxygen-consuming water layer and oxygen consumption. Its effect is similar to thunderstorms in the evening, and it is easy to cause floating heads. Turning on the machine at noon on cloudy and rainy days not only fails to increase the dissolved oxygen in the lower water, but reduces the oxygen production of the upper phytoplankton, increases the oxygen-consuming water layer of the pond, and accelerates the oxygen consumption of the lower water, which is very easy to cause floating heads. . There is a fisherman's proverb: the "floating head machine" is turned on at noon on sunny evenings and cloudy days (rainy days).