Since the 1970s, the three leaf roots blower has been gradually applied to intensive fish ponds in high-yield areas in China. Because of the large fish load in the intensive fish ponds, it is easy to cause floating heads and flooding when the pool water is lack of oxygen.Installing aerator is an effective method to ensure high yield of pond.

① At present, roots blower is mostly used in the application of aerator, which has the comprehensive function of aeration and oxygenation.

Roots blower has the function of lifting water upward during operation, which promotes the vertical circulation and replacement of pool water. The upper and lower layers of water are easy to mix, and the distribution of dissolved oxygen tends to be uniform.

In the fertilized water pond, at noon on a sunny day, the dissolved oxygen in the upper layer is often saturated, while the dissolved oxygen in the lower layer is still low. At this time, start the machine for 1 hour and transfer the water with high dissolved oxygen in the upper layer to the lower layer.To promote the prepayment of the bottom water oxygen debt, which to some extent reduces or eliminates the threat of anoxic floating head of fish.Roots blower also has aeration function, which can make the dissolved gas in the pool water escape into the air. Starting up at night and in the morning can accelerate the escape of toxic gases such as hydrogen sulfide and ammonia nitrogen in the water.

② The power allocation of Roots blower shall be determined according to the production level and required output of each region.

According to previous feedbacks from farmers, the net output of the intensive fish pond is about 700 kg per 667 square meters, and the installed capacity is 0.3-0.4 kW per 667 square meters, that is, two roots fans of 1.5 kW should be installed in a 6670 square meter pond.

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