Two-stage cavitation generator for organic wastewater treatment

A two-stage cavitation generator for organic wastewater treatment, comprising a shrouded impeller, a stator, and a rotor, wherein the shrouded impeller comprises a front cover plate, several blades, and a rear cover plate, the several blades are evenly distributed between the front cover plate and the rear cover plate, a working surface of each of the blades is an arc surface, and a back of each of the blades protrudes locally, so that a flow channel between the back of each of the blades and the working surface of an adjacent one of the blades is narrowed locally, forming a throat structure;

• an outlet of the shrouded impeller is provided with the stator and the rotor, and the stator is located at an outer edge of the front cover plate and fixed on an inner wall of a volute;
• the rotor is mounted on the rear cover plate, a gap is provided between the stator and the rotor, and blind holes are respectively provided on the stator and rotor on both sides of the gap, for performing secondary cavitation.