Domestic sewage sedimentation tank

The utility model discloses a domestic sewage sedimentation tank which comprises an equipment main body, the equipment main body comprises a sedimentation tank used for precipitating domestic sewage, and the sedimentation tank is arranged on an outer fixed surface; the stirring part is used for stirring the sewage and the liquid medicine in the sedimentation tank to accelerate the reaction rate, and is arranged in the sedimentation tank; by arranging the equipment main body, a plurality of vortexes are formed in sewage, and the sewage and liquid medicine are mutually contacted, rubbed and impacted inside, so that the sewage and the liquid medicine can fully react with each other, the reaction efficiency is improved, the practicability of the device is effectively enhanced, and in the treatment process, a user can control a linkage piece to ascend by utilizing a lifting cylinder, so that the treatment effect is improved. The rotating roller makes contact with the lower contact groove, the rotating reverse dire