Aeration device for sewage treatment

The invention discloses an aeration device for sewage treatment, relates to the technical field of sewage treatment, and aims to solve the technical problems that in the prior art, the heights of an aerator and a jet pipe cannot be adjusted, and the aeration range is limited. The aeration device comprises an aerator, a center cavity is formed in the middle of the aerator, and a center column is arranged in the center cavity; a spiral groove is formed in the side wall of the center column, a sliding pin is arranged on the cavity wall of the center cavity and is in sliding fit with the spiral groove, an air cavity and a sewage cavity are formed in the aerator, a plurality of jet pipes are arranged on the outer side of the aerator, one end of each jet pipe is communicated with the sewage cavity, and the side portion of each jet pipe is communicated with the air cavity. A submersible pump, an air pipe and a power mechanism are arranged on the outer side of the aerator, the submersible pump is communicated with th