What are solid waste and hazardous waste? Where can I identify hazardous waste and solid waste?

Solid waste refers to the solid and semi-solid waste produced by people in production, construction, daily life and other activities, which cannot be used by producers or temporarily, and will be abandoned to pollute the environment. According to the causes of solid waste, it can be divided into the following four categories: (1) industrial solid waste, which refers to waste residue, sludge, dust, etc. produced in the process of industrial production and processing and discharged into the environment. (2) Hazardous solid waste refers to hazardous waste, which has the characteristics of flammability, corrosiveness, reactivity, infectivity, toxicity and radioactivity, and is produced as hazardous waste products in various production enterprises. (3) Medical waste refers to the waste that is directly or indirectly infectious, toxic and other harmful in medical treatment, prevention, health care and other related activities produced by medical and health institutions. (four) urban solid waste, urban industrial waste refers to the mining waste rock, mineral processing tailings, fuel waste residue, smelting and chemical process waste residue discharged in industrial production.

There are many kinds of solid wastes, which are usually classified according to their properties, forms and sources. For example, it can be divided into organic matter and inorganic matter by nature; According to its morphology, it can be divided into solid (massive, granular and powdery) and muddy; According to the source, it can be divided into mining, industry, urban life, agriculture and radioactivity. In addition, solid waste can be divided into two categories: toxic and non-toxic. Toxic and harmful solid wastes refer to solid and semi-solid wastes that are toxic, flammable, corrosive, reactive, radioactive and infectious. Solid waste is the pollution source of the environment. In addition to direct pollution, it often pollutes the environment through water, atmosphere and soil.

Hazardous waste refers to waste that will pose a great threat to human health or the environment if it is handled, stored, transported, treated and disposed of improperly. It has great potential harm to human health and environmental protection, will cause or contribute to the increase of mortality or the incidence of serious diseases, or improper management will cause great acute (immediate) harm to human health or the environment.