Sewage treatment tank capable of preventing corrosion and aging

The utility model relates to the technical field of sewage treatment. The utility model discloses a sewage treatment tank capable of preventing corrosion and aging. Bottom plate, a reinforcement cageis fixedly mounted in the bottom plate; wherein four side plates are fixedly mounted at the top of the bottom plate; reinforcing meshes are fixedly mounted in the four side plates; a connecting pipe is fixedly mounted in the side plate on the right side; a polyethylene coating is sprayed on the outer part of the connecting pipe; filling coatings are fixedly installed on the top of the bottom plateand the opposite sides of the two opposite side plates correspondingly, HDPE geomembranes are laid on the tops of the filling coatings and the sides, away from the side plates, of the filling coatings correspondingly, and each filling coating comprises epoxy asphalt paint, a first epoxy resin layer, a glass cloth layer, a plaster layer and a second epoxy resin layer. According to the sewage treatment tank capable of preve