Trash generally refers to all kinds of garbage generated by human activities in life. Sometimes it also refers to some files automatically generated by the computer system, for example, when you surf the Internet, the system will automatically leave some information about your surfing, those are useless files.

1. Kitchen waste: Kitchen waste refers to food residues and waste materials generated by catering establishments, enterprises and institutions, schools, canteens, etc., commonly known as slop feet, slop or driving rain. Kitchen waste is mainly composed of starch, food fiber, animal fat and other organic substances. It is characterized by high water content, high oil and grease and salt content, and easy to rot and fermentation and odor.

2. Paper: not seriously tarnished text paper, packaging paper and other paper products. Such as newspapers, a variety of wrapping paper, office paper, advertising paper, paper boxes and so on.

3. Plastics: waste containers plastic, packaging plastic and other plastic products. For example, a variety of plastic bags, plastic bottles, Styrofoam, disposable plastic lunch boxes tableware, hard plastics and so on.

4. Metal: various categories of waste metal items. Such as cans, tin can boxes, lead skin toothpaste skins, waste batteries and so on.

5. Glass: colored and colorless waste glass products.

6. Fabric: old textile clothing and textile products.

7. Toxic and hazardous waste: Batteries, energy saving lamps and other toxic waste.

Expanded Information:

Trash is solid, fluid material that is unwanted or useless. In large, densely populated cities, garbage disposal is a headache. The common practice is to collect it and send it to landfills for landfill disposal or incinerate it in incinerators.

Through sorting and collection, useful materials, such as paper, plastic, rubber, glass, bottles and cans, metal, and used household appliances, etc., are separated from garbage to be recycled and reutilized, and waste is turned into treasure. It not only improves the level of waste resource utilization, but also reduces the amount of waste disposal. It is an important way and means to realize waste reduction and resource utilization.

The classification of garbage is a reform of the traditional way of garbage collection and disposal, and is a scientific management method for the effective disposal of garbage. People face the growing production of garbage and the deterioration of environmental conditions, how to maximize the utilization of garbage resources through the classification of garbage management, reduce the amount of garbage disposal, improve the quality of the living environment, is currently the world's countries *** with the same concern about one of the urgent issues.

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