Solid waste refers to the solid and semi-solid waste materials produced by human beings in production, consumption, life and other activities (the definition could be more extensive, and the wastes produced by animal activities also belong to this category) . The hazardous solid waste refers to the waste listed in the national hazardous waste list or identified as hazardous waste according to the national hazardous waste identification standards and methods.

Hazard  characteristics  refer  to  corrosiveness,  acute  toxicity,   leaching  toxicity,   reactivity,   infectivity,   nuclear radioactivity, etc. Hazardous waste has a serious impact on the environment and even human body, so it must be disposed safely and properly. According to the national and local environmental protection laws and regulations, enterprises producing hazardous waste must conduct centralized treatment of hazardous waste, arrange special personnel to be responsible for collection and management, set up special containers for storage of hazardous waste to be transported, and submit hazardous waste to qualified enterprises for collection, transportation and treatment.