Soil is an important part of ecological environment, one of the main resources that human beings depend on for survival, and also a repository of material biogeochemical cycles, which is highly sensitive to environmental changes. In recent years, the quality of soil environment has been deteriorating. The main reasons for the deterioration are: the increasing use of chemical fertilizer in agriculture; The widespread use of chemical pesticides; Agricultural discharge of industrial wastewater; Accidental discharge of toxic and harmful pollutants; Solid waste, especially the leakage of toxic and harmful substances caused by the landfill of toxic and harmful solid waste. Contaminated soil directly endangers human health through secondary pollution of surface water and groundwater and entry into human body through food chain through soil-plant system. Therefore, the protection and management of soil ecological environment has aroused people's general concern.
Incineration is also the most commonly used treatment method for organic contaminated soil, using direct or indirect heating, and selectively removing pollutants by controlling the bed temperature and material residence time of the thermal desorption system.