A rubber vulcanization accelerator DPG wastewater treatment method, firstly, the wastewater is acid-base flocculated, and after filtration, the wastewater enters the electrolytic cell equipped with micro-electrolysis filler at 60-80℃, micro-electrolysis for 2-5 hours, and the wastewater after micro-electrolysis is filtered, and the filtered wastewater is treated with 10-30ml of hydrogen peroxide/L wastewater by adding hydrogen peroxide at a concentration of 30%, adjusting pH=2-4 for 2-5 hours. Then the flocculant PAC is added at the ratio of 200~500mg/L wastewater for flocculation, adjusting pH=8~10, and settling time is 1~2 hours. After settling, the wastewater is filtered first. After filtering, the wastewater is adsorbed by activated carbon and resin successively, and its CODcr removal rate reaches more than 98% and meets the emission standard. The method has a simple process, small investment in equipment, low energy consumption, high removal rate of COD, which can reach more than 98%, better treatment effect, reaching the emission standard, and easy to industrialize.

Promoter DPG is a medium speed accelerator for rubber, natural rubber and synthetic rubber, and also as an activator for thiazole type, thiram type and hyposulfonamide type accelerators. The resulting products have good aging resistance. It is mainly used in the manufacture of rubber products such as tires, rubber sheets and shoe soles. The production process of DPG accelerator produces a large amount of organic wastewater with high concentration of salts, which is difficult to treat, and its production and development are greatly restricted due to the pressure of environmental protection. the wastewater of DPG production process mainly comes from the mother liquor distillation and washing process, which has high concentration of salts and COD, with color and odor, and contains many kinds of heterocyclic organic substances, which is difficult to treat by biochemical methods. At present, the research on the treatment of this type of wastewater is less reported, and most of the processes are evaporation and distillation, which have high energy consumption and poor treatment effect.