Papermaking wastewater treatment and recycling device

The utility model discloses a papermaking wastewater treatment recycling device, which comprises a filter tank with an upward opening, a settling tank and a water collecting tank with an upward opening, a grid is detachably arranged in the filter tank, a stirring mechanism is arranged below the grid, one side of the filter tank close to the top end is connected with a water inlet pipe through a first valve, and the other side of the filter tank close to the top end is connected with a water outlet pipe through a second valve. The part, close to the bottom end, of the other side of the filtering box is connected with a flow guide pipe through a second valve, the other end of the flow guide pipe is connected with the settling box, a PH detector is inserted into the top end of the settling box, the bottom end of the settling box is connected with a blow-off pipe through a third valve, and the side wall, close to the bottom end, of the settling box is connected with a water outlet pipe through a fourth valve. The