Sewage treatment sedimentation tank

The utility model discloses a sewage treatment settling pond, which belongs to the technical field of sewage treatment equipment and comprises a pond body, a mud guide hopper is fixedly connected to the lower end of the pond body, a support is arranged on the outer side of the mud guide hopper, the upper end of the support is fixedly connected with the mud guide hopper, and a first sealing cover is mounted on the upper portion of the mud guide hopper in a threaded mode. A second sealing cover is fixedly connected to the lower portion of the mud guide hopper, a piston is slidably mounted on the upper portion of the pond body, a spring is arranged between the piston and the pond body, water flow drives the piston to be sealed on the upper portion of the mud guide hopper, water is prevented from being continuously and rapidly discharged, then the first sealing cover is opened, and mud on the lower portion of the mud guide hopper slides down and is discharged. And finally, the first sealing cover and the second s