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This is a multi-function underwater agitator and aerator.
This is a multi-function device that can simultaneously agitate, break up scum, and aerate, with just one unit.
The underwater SPAROTOR is composed of a hollow-shaft underwater motor, screw, draft tube, and air hose. When the screw rotates it generates water flow in the draft tube. The discharge flow from that agitates the sewage and the surface water flow moves the scum to the draft tube, where it is suctioned off and broken up.
At the same time, the negative pressure at the end of the screw is used to create air suction, which dissolves fine bubbles under the water.