Filler for sewage treatment tank

The utility model relates to a filler for a sewage treatment tank, which comprises a cloth bag, a hanging rope, a tightening belt and a filler body, the cloth bag is hollow, the hanging rope penetrates through the cloth bag, two ends of the hanging rope respectively extend out of the left end and the right end of the cloth bag, and two ends of the hanging rope are fixedly connected with the innerwall of an aeration tank; the two tightening belts are arranged on the left side and the right side of the cloth bag respectively, one side of each tightening belt is fixedly connected with the clothbag, the other side of each tightening belt is fixedly connected with the inner wall of the aeration tank, the tightening belts are located below the hanging ropes, and the upper end of the filler body is fixedly connected with the lower side of the cloth bag. According to the utility model, the structure of the aeration tank is not changed, and when aeration equipment at the bottom of the aeration tank needs to be replace