Small integrated sewage treatment equipment convenient for replacing filter element

The utility model relates to the technical field of small-sized sewage treatment equipment, in particular to small-sized integrated sewage treatment equipment convenient for replacing a filter element. According to the technical scheme, the sewage treatment device comprises a shell, a sewage hopper and a filtering tank body, a screen basket is arranged in the upper end of the shell, the sewage hopper is arranged below the screen basket, the lower end of the sewage hopper is connected with a connecting pipe, a servo motor is arranged on the lower surface of the sewage hopper, and a tool bit is arranged at an opening in the upper end of the connecting pipe; a filter tank body is connected to the lower end of the connecting pipe, an upper sealing cover is in threaded connection with an opening in the upper end of the filter tank body, a filter element body is arranged in the center of the filter tank body, and springs are arranged on the inner wall of the lower end of the filter tank body in an annular array mod