It is understood that DDS dedusting, desulfurization and denitrification technology for flue gas are scientific research results obtained by Dr. Xionghui Wei of Peking University after more than 30 years of theoretical and experimental research. The exhaust gas treated by this technology can meet the requirements of ultra-low emission standards. The removed sulfur dioxide and nitrogen oxides are enriched and converted into pure liquid sulfur dioxide products and nitrate products, resulting in greater economic benefits and the transformation of waste into treasure. In addition, compared with traditional dust removal, desulfurization and denitrification methods, this technology has the remarkable characteristics of high purification efficiency, strong adaptability, strong stability, no secondary pollution, non-toxic and harmless of dedusting and desulfurization agents.

　　When introducing DDS dedusting, desulfurization and denitrification technology for flue gas, Dr. Xionghui Wei said that the technology can fundamentally reduce the pollution of dust (including PM particles and nanoparticles), HF, HCl, dioxins, polycyclic aromatic hydrocarbons and other organic matter, heavy metals, sulfur oxides and nitrogen oxides in the flue gas to atmosphere. Another major innovation is the production of high-purity sulfur dioxide and nitrate after desulfurization and denitrification, which can be used as chemical raw materials to realize the real transformation of waste into treasure. Third, the dedusting agent and desulfurization solution can be used in full cycle, without the generation of secondary pollutants such as calcium sulphate. It completely eliminates the phenomenon of "digging a mountain and stacking two mountains" by traditional calcium desulfurization method. The application of the new technology reduces overall operating costs and improves the operating efficiency. The wide application of this technology can reduce or even eliminate haze at the source stage of industrial pollution.