Chromic acid wastewater treatment system

The utility model discloses a chromic acid wastewater treatment system for treating chromic acid wastewater generated from a production system. The system comprises anode resin tanks, a cathode resin tank, a recycled and backwash wastewater collecting tank, a recycled water storage tank, a membrane electrolysis bath, a purifying tank, a cathode recycled liquid storage tank and an anode recycled liquid storage tank, wherein the membrane electrolysis bath is used for performing electrolysis treatment on a mixed waste liquid; the membrane electrolysis bath comprises a bath body; the bath body is further internally provided with an ion membrane; the ion membrane is used for dividing the bath body into an inner bath and an outer bath; a cathode plate is arranged inside the inner bath; an anode plate is arranged in the outer bath; the cathode recycled liquid storage tank is used for storing a strong alkali solution; a liquid inlet of the production system is respectively connected with the recycled water storage ta