The jet aerator uses the ejector principle to aspirate air with a high velocity water jet and mix them in a very turbulent zone, with generation of finely divided bubbles dispersed in the liquid.  As a  consequence, high mass transfer rate of the oxygen to the liquid occurs.

The "plume" outgoing from the aereator inmerse in the liquid creates horizontal mixing streams that rise  due to the  low air/liquid density.

At the boundary of the plume, velocity grandient create unstability and turbulence.

This mixing action improves oxygen transfer and the solid suspension homogenety of the basin contents.