The main performance indicators of the aerator accessories in public spaces are specified as aeration capacity and power efficiency. Aeration capacity refers to the amount of oxygen that an aerator adds to the water body per hour, in kilograms/hour; power efficiency refers to the amount of oxygen that an aerator consumes 1 kilowatt-hour of electricity to increase water, and the unit is kg/kWh . For example, a 1.5-kilowatt waterwheel aerator, with a power efficiency of 1.7 kg/kWh, means that the machine consumes 1 kWh of electricity and can add 1.7 kg of oxygen to the water body.
Although the accessories of space aerators in public places are more and more widely used in aquaculture production, some fishery practitioners still do not understand the working principles, types and functions of space aerators in public places. In actual operation, they are Blindness and randomness. Here, it is necessary to understand its working principle first, so that in practice, we will master the use of space aerator accessories in public places. As we all know, the purpose of using public space aerator accessories is to add dissolved oxygen to the water body, which involves the solubility and dissolution rate of oxygen. Solubility includes three factors: water temperature, water salt content, and oxygen partial pressure; dissolution rate includes three factors: the degree of unsaturation of dissolved oxygen, the contact area and mode of water-air, and the movement of water. Among them, the water temperature and the salt content of the water are a kind of stable state of the water body, and generally cannot be changed. The degree of unsaturation of dissolved oxygen is the factor that we want to change, and it is also a current state of the water body. Therefore, in order to increase oxygen to the water body, it is necessary to directly or indirectly change the three factors of oxygen partial pressure, water-gas contact area and method, and water movement status.
It can be seen that the role of the space aerator accessories in public places is not only to increase oxygen to the water body, but also to effectively promote the improvement of the primary productivity and self-purification ability of the pond, thereby improving the pond water quality and ecological environment. The water circulation produced by it is not suitable for the living habits of some cultured objects such as eels and shrimps, but it has a good effect on promoting the healthy and rapid growth of fish and shrimps.