Bubble Swirl Aerator

The rotating bubbler is a type of highly efficient aeration device that was introduced from Japan and locally improved. It is widely used in industries such as chemical engineering, papermaking, dyeing, pharmaceuticals and food, as well as in integrated wastewater treatment systems. It combines the principles of fluid mechanics and works by causing the slurry-water-gas mixture to circulate inside and outside the cylinder during operation. The gas is repeatedly broken and fragmented, enhancing the oxygen transfer rate and utilization. Compared to traditional microporous aeration devices, its advantages lie in having larger voids, no clogging, no maintenance requirements, a long lifespan, and the ability to support waterless installation and renovation.

The core of the rotating bubbler lies in utilizing the principles of fluid dynamics to create a high-speed rotating gas-liquid two-phase flow within the equipment, thereby enhancing the efficiency of oxygen transfer into the water and promoting water mixing.
The gas is injected rapidly from the bottom air inlet pipe and enters the aeration device, where it pushes the water to rotate along the tangent direction, forming a strong vortex field.
Under the action of centrifugal force, large air bubbles are sheared and broken into tiny bubbles, significantly increasing the contact area between gas and liquid.
The rotation draws the sludge at the bottom of the tank or the sewage into the aeration device, achieving a three-phase mixture of sludge, water and gas, avoiding sludge deposition.
The micro-bubbles spend more time in the upward process, allowing more oxygen to have the opportunity to dissolve in the water, in accordance with the law of Henry's Law regarding the influence on solubility.
This "gas extraction + rotational cutting + multi-level mixing" mechanism makes its oxygen transfer efficiency high and less prone to attenuation.