Integrated sedimentation tank device for pulping and papermaking wastewater treatment

The utility model relates to an integrated sedimentation tank device for pulping and papermaking wastewater treatment, which comprises two primary sedimentation tank main bodies which are connected in series and are connected through a water passing area, and a built-in secondary mud-water separation sedimentation tank main body is arranged in the second primary sedimentation tank main body along the water inlet direction; a primary sludge collection area is arranged at the lower part of the primary sedimentation tank main body; the lower part of the built-in secondary mud-water separation and sedimentation tank main body is provided with a secondary mud collection area, the side wall of the lower part of the built-in secondary mud-water separation and sedimentation tank main body is provided with a water distribution port, the upper part of the built-in secondary mud-water separation and sedimentation tank main body is sequentially provided with a support frame, a water outlet tank, a water outlet and a drai