In the process of aquaculture, there will be bait impurities and fish and shrimp excrement to form a certain bottom in the water. This bottom has its own advantages and disadvantages for the growth of fish and shrimp. The appearance and application of aerators are to reduce the disadvantages and increase the growth of fish and shrimp. help. The use of aerators to increase oxygen is common to improve the water quality of shrimp ponds. Effective measures commonly used aerators include turbo aerators, waterwheel impellers, etc. Although the structures are different, the purpose is the same. The method can increase the dissolved oxygen in the oxygen-deficient water body and provide a favorable living environment for shrimps and other organisms. There are two commonly used waterwheel type aerators: impeller type and waterwheel type.
The working principle of the waterwheel aerator is that the waterwheel aerator hits the water body through the blades, on the one hand, the lower water is lifted until the water body is broken into water splashes, which are thrown into the atmosphere, and then fall back to the air by gravity after increasing the dissolved oxygen. On the other hand, the pool water is pushed to flow to form a circulation, and the water body with sufficient dissolved oxygen is transported to all parts of the shrimp pond to form a relatively uniform distribution of dissolved oxygen.
The feature of the waterwheel aerator is that it makes the pool water form a circulation, so that the DO value of the whole pool tends to be consistent within a certain period of time. The formation and maintenance of circulation requires a certain amount of energy, which is determined by the viscous nature of water. The flow of pool water is complex, the main flow is circulation, and there will be backflow at the corners. There is no ready-made model for this kind of flow. The circulation promotes the uniform distribution of DO, and its pressure distribution is conducive to the realization of the sewage collection in the center of the shrimp pond. In practical applications, the problems encountered can be briefly summarized as follows: the influence of the arrangement of the aerators on the oxygenation effect, and the influence of the arrangement of the aerators on the effect of the central pollution collection: these two problems are related to the shrimp pond. circulation is closely related.
Post time: Aug-15-2022