Impeller type aerator

It is the most widely used aerator at present, with an annual output value of about 150,000 units. Its aerating capacity and dynamic efficiency are better than other models, but the running noise is larger, and it is generally used for large-scale pond aquaculture with a water depth of more than 1 meter [1].

Water wheel aerator

It has a good effect of increasing oxygen and promoting water flow, and is suitable for pond with deep silt and an area of L 000 ~ 2 540 ㎡ [6].

Jet aerator

Its aeration power efficiency is higher than that of waterwheel aerator, inflatable aerator, water-jet aerator, etc. Its structure is simple, and it can form water flow and stir water. Jet aerator can oxygenate water gently without damaging fish body, so it is suitable for oxygenating fish fry pond [8].

Water jet aerator

With good oxygenation function, it can rapidly improve the dissolved oxygen of surface water in a short time. At the same time, it also has the effect of artistic appreciation. It is suitable for the use of fish pond in gardens or tourist areas.

Inflatable aerator

The deeper the water, the better the effect, suitable for use in deep water.

Suction aerator

Through the negative pressure suction air into the water, and with the water to form a vortex mixing water forward, so the mixing force is strong. Its oxygenation capacity for the lower water is stronger than that of the impeller aerator, while its oxygenation capacity for the upper water is slightly lower than that of the impeller aerator [4].

Vortex aerator

: It is mainly used for oxygenation of subglacial water in northern China with high oxygenation efficiency [4].

Increasing oxygen pump

Because of its portability, easy operation and single oxygenation function, it is generally suitable for use in fish fry breeding ponds or greenhouse breeding ponds with water depth below 0.7 m and area below 0.6 mu [5]. With the continuous refinement of fishery demand and the continuous improvement of aerator technology, many new aerators have appeared, such as inrush aerator, spray aerator [9] and other aerators of various specifications.