Device and method for treating sodium hydrosulfite production sewage

The invention provides a device and a method for treating sodium hydrosulfite production sewage, and belongs to the technical field of sewage treatment. Comprising a treatment tank and an electrolytic tank, an air injection assembly is arranged on the inner surface of the treatment tank and used for injecting heated inert gas into the treatment tank, a stirring assembly is fixedly connected to the surface of the treatment tank and used for stirring sewage and reaction materials in the treatment tank, and a scraping and washing assembly is arranged on the upper surface of a blow-off pipe. The scraping and washing assembly is used for scraping and washing sediments accumulated on the upper surface of the blow-off pipe, and the scraping and washing assembly is connected with the blow-off pipe; by arranging the air injection assembly, the stirring assembly and the scraping and washing assembly, the reaction rate and effect between sewage and a reaction material can be greatly improved through the arrangement of t