Integrated sludge water treatment device and treatment method

The present invention relates to the technical field of water treatment and relates to an integrated sludge water treatment device and treatment method. The device comprises a sludge tank, a flocculation tank, a sedimentation tank, a sludge pump, a reflux valve and a dehydrator; the sludge tank is used for storing sludge water and layering the sludge water into an supernatant and a lower sludge layer; the flocculation tank is connected with the sludge tank through a sludge discharge pipe and is used for discharging the sludge water into the sludge tank; the sedimentation tank is connected withthe sludge tank through the sludge discharge pipe and is used for discharging the sludge water into the sludge tank; the sludge pump is arranged in the sludge tank and is used for enabling the supernatant to flow back into the flocculation tank; the reflux valve is connected between the sludge pump and the flocculation tank so as to prevent the sludge water in the flocculation tank from enteringthe sludge pump; and the d