Municipal solid waste, commonly known as trash or garbage (US), refuse or rubbish (UK) is a waste type consisting of everyday items we consume and discard. It predominantly includes food wastes, yard wastes, containers and product packaging, and other miscellaneous inorganic wastes from residential, commercial, institutional, and industrial sources. Examples of organic wastes are newspapers, clothing, food scrapes, boxes, disposable tableware, office and classroom paper, furniture, wood pallets, rubber tires, and canteen or cafeteria wastes. Municipal solid waste does not include industrial wastes, agricultural wastes, and sewage sludge. The collection is performed by the municipality within a given area. They are in either solid or semisolid form.

Municipal solid waste treatment plant is a solid waste disposal facility consisting of different devices and combining with different sorting methods to separate useful resources out from the municipal solid waste. After processed by the MSW treatment plant, the municipal solid waste can be divided into different parts according to different raw materials, which can be further processed into valuable products by related machines. In a word, the plant can not only remove waste pollution and improve the environment but also create great profits and drive the economy.