The recycling of waste materials is commonly known as "repairing the old and utilizing the waste". It refers to a series of work of collecting, sorting, processing and transforming leftovers, leftovers, wastes and discarded products that can be used in production and consumption, and then transforming them into useful substances.

There are usually three types of waste:

(1) Products returned by producers themselves, such as cutting heads and tails during steel rolling, residual injection, waste ingots during steel casting, waste molds, steel stains, branches and bark during wood cutting, etc.

(2) Produced in the process of machining, such as chips, scraps, sawdust and shavings in wood mechanics.

(3) Waste machinery and equipment, broken plastics, plastics, glass and other wastes in use. With the continuous expansion of production scale and the continuous improvement of living consumption level, the amount of waste materials will increase.

Actively recycling waste materials can turn waste into treasure, turn harm into benefit, protect environmental sanitation and promote production development. ?

Extended data:

management system

The person in charge said that specific requirements were put forward for the foreign supply, pre-shipment inspection, domestic reception, port inspection, customs supervision, import license and supervision of enterprises using imported solid waste.

The whole process supervision system of imported solid waste has been further improved, and nine prohibitions have been clearly stipulated: namely, it is forbidden to dump, pile up and dispose of solid waste at home and abroad; Prohibit the transfer of hazardous waste through People's Republic of China (PRC); Prohibit the import of hazardous waste;

It is forbidden to import solid waste for the purpose of heat energy recovery; It is forbidden to import solid wastes that cannot be used as raw materials or used harmlessly; It is forbidden to import large quantities of solid waste or to store it in China without full utilization;

It is forbidden to import solid waste that does not meet the mandatory requirements of national environmental maintenance control standards or relevant technical specifications; Prohibit the entrepot trade of solid waste; It is forbidden to transport solid waste into the country by means of delivery.

Reference source: Baidu Encyclopedia-Waste Recycling Station