Most widely used aerator types

Views: 224 Author: Site Editor Publish Time: Origin: Site

Aerators are divided into: micro-hole (disc and tube type), jet, swirl (single nozzle and double nozzle), diffuse flow (rotation mixing), etc.

The principle of the microporous aerator is to squeeze the air, escape from the micropores of the rubber diaphragm, and form tiny bubbles to diffuse into the water. The oxygen utilization rate in 6 meters of clean water can reach more than 30%, which is an aerator with high oxygen utilization rate. The microporous aerator is more suitable for use in domestic wastewater, it is easy to be blocked and damaged in industrial wastewater, and has a short life. Because there is no stirring function, sludge deposits are prone to occur. After a certain number of years of use, fouling and clogging will cause the wind pressure and energy consumption to rise, and the oxygen utilization rate will drop sharply after damage, and it needs to be replaced in time.

The principle of jet aerator is high-speed injection of circulating water, entraining air, mixing in the cavity, and ejecting along the direction of the nozzle. It is an aeration process that was applied to industrial wastewater earlier, and has the advantages of large service area and not easy to block. The oxygen utilization rate in 6 meters of clean water is about 15%-21%. Because it needs to be equipped with an additional circulating water pump, it consumes a lot of energy. In calcium-containing wastewater, nozzles are prone to fouling and clogging.

The swirling flow aerator is based on the principle of high-speed jetting of airflow, which rotates and rises after mixing with sewage in the cylinder, and is impacted and cut by the mushroom head to form tiny bubbles. At the same time, a negative pressure is formed at the bottom to entrain the sludge at the bottom of the pool. Swirl is a new type of aeration process that has emerged in recent years. The oxygen utilization rate of 6 meters of clean water is about 18%-25%. Because it can be installed without stopping production, it is not easy to be blocked, the life span is more than ten years, and the energy consumption is moderate. In recent years, it has begun to be widely used in the field of industrial wastewater.


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