Garbage sorting technology, as a front-end technology for garbage treatment, is an essential program for the reuse of resources and the subsequent processing chain of garbage treatment. And especially in the chain of garbage incineration, sorting technology is particularly important. Garbage sorting can not only improve the utilization rate of resources and achieve their reuse, but also enhance the efficiency of garbage incineration. Garbage sorting technology can choose different methods for different types of waste.

1. Wind sorting: The basic principle is that the airflow carries lighter materials upwards or horizontally to farther places, while heavy materials settle due to the inability of the rising airflow to support them, or are thrown out at a closer distance in the horizontal direction due to inertia. The wind sorting process is based on the settling law of various solid particles in the air. Fengxuan mainly recycles recyclable materials such as paper and plastic.

2. Magnetic Separation: Mainly used for the classification of mineral resources, the working principle of magnetic separation is that after other materials are fed into the separation space of the magnetic separator, they are subjected to the combined action of magnetic force and other mechanical forces (such as gravity, centrifugal force, friction force, medium resistance, etc.).

3. 3D sorting: a conveying equipment designed with separation function for sorting inorganic particles in garbage after rough crushing. This machine utilizes the characteristics of crushed garbage materials, and the conveyor belt is designed with a bouncing function to separate inorganic particles or other hard particles while conveying the material on one side. The separated particles move in the opposite direction to the conveyed material, thus achieving the purpose of garbage sorting. 3D sorting mainly involves selecting components such as batteries, ceramics, and bricks.

4. Density sorting: mainly sorting based on the density of objects, classifying garbage with different density values.

In order to further improve the level of urban solid waste sorting technology in China, it is necessary to optimize and innovate the automatic sorting technology for urban solid waste resource utilization, improve its sorting efficiency and accuracy, reduce system construction costs and operational energy consumption, material consumption, and management investment.

If the optimized and innovative urban household waste resource sorting technology is adopted, more than 90% of the components in the waste can be utilized as resources, greatly reducing the amount of waste landfilled and extending the service life of urban household waste landfills. Garbage sorting technology provides greater possibilities for achieving the goal of harmless and reduced waste in garbage treatment.