1, water wheel aerator
The waterwheel aerator has two wheels and four wheels. When working, the blades hit the water surface at high speed, stirring the air into the water to achieve the purpose of aeration. This aerator is suitable for shallow water ponds. Will not stir the sediment, can keep the water fresh. The waterwheel aerator not only has the function of increasing oxygen, but also can make water form circulation, and sewage flows back to the sewage outlet.
2. Impeller aerator
Impeller aerator increases dissolved oxygen in water by stirring water and aeration principle, which has good aeration effect and high power efficiency. There are many models according to the motor power. How much oxygen the impeller aerator can increase depends mainly on the diameter of the impeller below it. Generally, the depth of lifting water is three times the diameter.
The impeller aerator lifts water upward from the bottom, and the generated suction can bring organic debris and other things from the bottom to the upper layer, which is oxidized and decomposed by using the principle that the dissolved oxygen in the upper layer is relatively sufficient. Through the continuous operation of the impeller, the oxygen in the upper and lower layers is as consistent as possible, especially at noon on a sunny day, so that the oxygen in the upper layer is surplus to compensate the oxygen value in the lower layer.
3. Air-breathing jet
When the air-breathing jet is working, the water in the water pump is ejected from the nozzle in the jet pipe at a high speed, and the oxygen-rich water in the upper layer is pumped to the bottom layer by the self-contained water pump, at the same time, the hollow shaft will continuously press air into the water, and the dissolved oxygen will diffuse in a straight line with the water flow. Because this aerator has no rotating machinery underwater, it will not hurt fish, and it is very suitable for deep-water fish ponds with high fish density.
4. Water jet aerator
The water jet aerator uses a water pump to send water to the nozzles installed in the middle and on the shore of the fish pond, so that the water is sprayed out and falls like rain, and the water contacts the air to increase dissolved oxygen. The power of this machine is generally 1. 1 ~ 1.8 kW, which is only suitable for small fish ponds with shallow water.
5. Inflatable aerator
In the working room of inflatable aerator, air is first pressurized by air compressor, and then tiny bubbles are discharged through the filter element installed at the bottom of the water, which forms the movement of water in the process of bubbles rising, and part of oxygen is dissolved in the water to achieve the purpose of aeration.
6. Swing aerator
Under the rotation of the counterweight, the outer side of the floating body exerts force on the horizontal plane, producing waves that spread around, thus increasing the contact area between the water surface and the air, and the oxygen in the air is constantly dissolved into the water. The power of this machine is generally 1. 1 ~ 1.5 kW, which is suitable for large-scale surface deep-water fish ponds with high efficiency.
How to choose pond aerator
1, look safe
Be sure to try it when you buy it, check whether the shell is damaged, see if the thread has fallen off, and if there is any leakage.
2. Look at the performance
See how the oxygenation effect of the aerator is, especially whether there is any obvious difference between the speed of high gear and low gear. The bigger the difference, the better. Choose an aerator with low noise and large gas output. Too much noise will have a bad effect on aquatic products, and too little gas can not meet the requirements.
Step 3 look at the manufacturer
Choose regular manufacturers for production. Especially when buying a large aerator, you must look at the manufacturer's certificate, otherwise the quality will be difficult to guarantee.
Step 4 choose a category
(1) impeller aerator has good power effect and large working area, and is suitable for raising domestic fish.
(2) The waterwheel aerator has good power effect, strong propulsion and obvious oxygen enrichment on the water surface, and is suitable for shrimps and crabs.
(3) Swing aerators and jet aerators are suitable for deep-water culture and long ponds.
(4) The water jet aerator can aerate small ponds and is suitable for small fish ponds in garden-style tourist areas.
(5) The deeper the water, the better the effect, which can make the water dissolve oxygen gently up and down without damaging the fish and shrimp, and is suitable for aeration in fish and shrimp ponds.