Sludge granulation method for wastewater treatment

The invention provides a sludge granulation method for wastewater treatment. The sludge granulation method comprises the specific steps of a) conducting water matrix improvement treatment; and b) conducting particle formation promoting treatment. The saccharide paste in the water substrate improvement treatment can change the matrix type of the sludge mixed liquid, so that the utilization speed of the matrix is improved, and the proliferation speed of flora in the sludge is promoted. According to the particle formation promoting treatment, on the one hand, the surface property of particles is utilized, accumulation of bacteria on the surfaces of the particles is accelerated, so that core carriers of the granular sludge are formed, and the appearance time of the granular sludge is shortened, and on the other hand, the reaction kettle adopts a semi-arc bottom plate and an arc-shaped claw plate attached to the semi-arc bottom plate, contact between particles and bacteria suspended in a mixed solution can be effe