Sewage treatment device for papermaking

The invention provides a papermaking sewage treatment device, and relates to the technical field of sewage treatment. The cleaning assembly is mounted in the impurity filtering assembly; the number of the driving assemblies is two, and the two driving assemblies are installed at the top of the impurity filtering assembly. The number of the mixing assemblies is two, and the two mixing assemblies are mounted at the bottoms of the two driving assemblies; the number of the sewage treatment assemblies is two, and the two sewage treatment assemblies are mounted at the top of the impurity filtering assembly; the number of the supporting angle irons A is two, and the two supporting angle irons A are fixedly installed at the bottom of the impurity filtering shell. When a mixing movable block moves, a plastic bottle is extruded under the action of an extrusion push plate, so that a sewage treatment agent in the plastic bottle is sprayed into sewage in an impurity filtering shell through a sewage treatment agent dischar