At present, the main treatment methods for household waste, leachate, and sludge are landfill, incineration, and gasification processes. The landfill method poses hidden dangers such as occupying a large amount of land and polluting groundwater, and has been banned by many developed countries; Incineration is currently the mainstream treatment method, but in the process of domestic incineration, sulfur oxides, nitrogen oxides, and fly ash emissions are still generated, and due to the limited combustion temperature, it is difficult to avoid the production of toxic substances such as dioxins. Compared with garbage incineration, garbage gasification technology has a higher reaction temperature, avoiding the production of pollutants such as dioxins, sulfur oxides, and nitrogen oxides. It achieves high-temperature solidification treatment of heavy metals in garbage, effectively avoiding secondary pollution, and is the main development direction of future domestic waste treatment technology.

< 1 >