Harmless treatment method of desulfurization waste alkali liquor

The invention discloses a harmless treatment method of desulfurization waste alkali liquor. The method comprises the following steps: step 1, adsorption: collecting waste alkali liquor into a gravity sedimentation tank through a liquid discharge pump, adsorbing harmful substances in the waste alkali liquor through a curing base material positioned in the gravity sedimentation tank and forming colloid, the curing base material is a mixture of lime or cement kiln ash, diatomite and graphene oxide; and step 2, curing and oxidizing, namely pumping the pre-clarified waste alkali liquor into a reaction kettle through a delivery pump, adding quantitative quick lime, stirring, introducing into a rake dryer, drying under heating and vacuumizing conditions to form powder, temporarily storing the powder in a rainproof shed, naturally oxidizing, and transferring to a solid waste treatment unit for subsequent treatment. The harmless treatment method of the desulfurization waste alkali liquor is simple and easy to implemen