The invention provides a
sewage treatment device, and belongs to the technical field of
sewage treatment. The technical problem that an existing
sewage treatment device is poor in
treatment effect is solved. The device comprises a water inlet
pipe, an inner tank and an outer tank, the inner tank and the outer tank are
barrel-shaped, openings are formed in the upper ends of the inner tank and the outer tank, and the position height of the opening in the upper end of the inner tank is lower than that of the opening in the upper end of the outer tank. The end of the water inlet
pipe extends to the position over the opening in the upper end of the inner
pool, one side of the outer
pool is connected with a water drainage
pipe, and a
sludge discharge port is formed in the center of the bottom of the inner
pool and communicates with the outside through a
sludge discharge pipe. A plurality of
sludge scraping pieces are arranged on the upper side of the bottom of the inner tank, are distributed in a surrounding manner in the circumferential direction of the sludge
discharge port and can move in the circumferential direction of the sludge discharge port. A plurality of driving pieces in one-to-one correspondence with the sludge scraping pieces are arranged on the upper side of the bottom of the outer tank, and magnetic attraction structures are arranged between the driving pieces and the sludge scraping pieces. When the sludge scraping pieces rotate, stirring on sewage is small,
precipitation is facilitated, and the sewage purification effect is guaranteed.