Sludge reduction recycling method based on combination of sludge three-stage separation and cell disintegration

The invention belongs to the technical field of sludge treatment of sewage plants, and particularly relates to a sludge reduction and recycling method based on combination of sludge three-stage separation and cell disintegration. The sludge treatment process comprises the following steps: (1) first-stage sludge separation-(sludge concentration and dehydration-outward transportation)-sludge wall breaking-second-stage separation-third-stage separation-concentration and dehydration-outward transportation; (2) first-stage sludge-slag separation (sludge backflow), slag wall breaking, second-stage separation, third-stage separation, concentration and dehydration, and outward transportation. The first-stage separation tank is mainly used for separating slag and mud through hydraulic power, and the hydraulic load is high; physical treatment and chemical treatment are combined in the secondary separation tank, high-density slag and low-density sludge are hydraulically separated, the hydraulic load is low, and meanwhil