Method for comprehensively treating sulfur dioxide and printing and dyeing wastewater

The invention discloses a method for comprehensively treating sulfur dioxide and printing and dyeing wastewater. The method is characterized by comprising the following steps: introducing sulfur dioxide into the printing and dyeing wastewater, adding activated carbon fibers loaded with ferric citrate and an oxidant, and achieving the aim of comprehensively treating the sulfur dioxide and printing and dyeing wastewater. According to the method disclosed by the invention, the sulfur dioxide is used for treating the printing and dyeing wastewater, so that the treatment of the printing and dyeing wastewater is accelerated, the waste gas sulfur dioxide is effectively treated, and the aims of using wastes to treat wastes and turning wastes into treasures are achieved. The method disclosed by the invention is simple, low in cost, obvious in effect, wide in pH application range and can be applied to treating the waste gas sulfur dioxide and industrial printing and dyeing wastewater, and secondary pollution is avoided.