It refers to a series of activities that classify, store, put in and carry garbage according to certain regulations or standards, so as to turn it into public resources. The purpose of classification is to improve the resource value and economic value of garbage and make the best use of it.

Garbage belongs to the public's private articles in the stage of classified storage. After being classified by the public, it becomes a regional quasi-public resource in the community where the public is located. Classified transportation to garbage collection points or transfer stations becomes a non-exclusive public resource.

Judging from the classification methods of municipal solid waste at home and abroad, it is generally classified according to the composition and output of garbage, combined with the resource utilization and treatment methods of local garbage.

2. Matters needing attention in garbage classification

(1) Recyclable materials with high value, such as newspapers and magazines, cartons, packaging boxes, PET plastic bottles, cans, etc. , will be put in the first place to ensure that such recyclable materials will not be polluted by mixed garbage.

(2) Don't put the items that have been polluted, damp and can't be taken out, such as lunch boxes and food packaging boxes contaminated by oil pollution, into recyclable collection containers. Empty the liquid in the bottle and wash the bottle and jar briefly before putting them in. If there is a bottle cap, it is not necessary to separate the bottle cap from the bottle body, which can ensure that other waste products in the recyclable collection container are not polluted and respect and maintain the classification results of others.

(3) Waste paper and waste plastics that are not sure whether they can be recycled (or not explicitly stated in this guide) should be put into recyclable collection containers first if they are not polluted.

(4) Public institutions at all levels shall establish ledgers to record in detail the types, quantities, storage, transshipment, destination and disposal of domestic garbage.

3. The benefits of garbage sorting

The benefits of garbage sorting are obvious. First of all, according to statistics, after removing recyclable and non-degradable substances, the amount of garbage that can be reduced will reach more than 60%. After garbage sorting, the production of toxic substances is reduced by at least half.

After sorting, the available garbage can be recycled and converted into energy again, and 600 kilograms of diesel can be recycled for every ton of waste plastic; One ton of waste paper can be turned into 700 kilograms of good paper, which can cut down less 17 trees and reduce water pollution in pulp production; Melting a ton of cans can save 20 tons of aluminum ore.

It can be seen that if garbage is sorted in time, it can not only reduce the environmental problems caused by incineration and landfill, but also really turn waste into treasure.