Aeration device for landfill leachate pretreatment

The utility model provides an aeration device for landfill leachate pretreatment, which relates to the technical field of sewage treatment and comprises a pretreatment tank, landfill leachate is accommodated in the pretreatment tank, a motor is fixedly mounted on the left side of the outer surface of the pretreatment tank, and an output shaft of the motor is fixedly connected with a hollow roller. Four hollow rotating plates are fixedly mounted on the outer surface of the hollow roller, and a plurality of round holes I are formed in the outer surfaces of the four hollow rotating plates. When the garbage leachate pretreatment device is used, the motor is started, and the output end of the motor drives the hollow roller to rotate, so that the hollow rotating plates are driven to stir garbage leachate in the pretreatment tank; the hollow rotating plate is located in the pretreatment tank and can fully stir the landfill leachate, meanwhile, the first air pump is started, air is conveyed into the hollow roller and