Sludge settling tank

The utility model discloses a sludge sedimentation tank, and relates to the technical field of environmental protection, the sludge sedimentation tank comprises a tank body, the tank body is provided with a containing cavity, the tank body is fixedly connected with a feeding pipe, a material receiving box and a filter plate, the filter plate is located below an outlet of the feeding pipe, the filter plate is located between the feeding pipe and the material receiving box, and the tank body is relatively and fixedly connected with two supporting plates; the filter plate is located between the two supporting plates, the supporting plates are rotationally connected with scraping plates used for driving waste to move in the direction close to the collecting box, and the supporting plates are fixedly connected with driving parts used for driving the scraping plates to rotate. Waste falls on the filter plate through the feeding pipe, liquid falls into the containing cavity through the filter plate, the driving piec