With the increasing demand for landfill management projects, these old landfills are facing the problems of high excavation risks, insufficient degradation, and difficult product use. Multifunctional stale garbage sorting equipment is used to treat unclassified garbage in landfills and improve the efficiency of garbage screening and sorting.

Garbage sorting not only involves improving the living environment of citizens, but also involves the further development of environmental protection work and garbage disposal methods in the whole society. Generally speaking, after hazardous waste is sorted, kitchen garbage and other garbage should be sent to hazardous waste treatment plants, kitchen garbage treatment plants, incineration plants, and landfills through collection and transportation systems. Among them, kitchen waste can be processed into biogas and fertilizer. Recyclable materials will enter recyclable sorting and renewable resource enterprises through the recycling system.

Stale garbage refers to the product of long-term natural evolution after garbage landfill. After years of microbial decomposition and fermentation, it usually has a large amount of water and a very low organic content. If it is to be dug out and incinerated, it needs to be screened, and the separated combustibles are used for garbage incineration, and the rest are composted, landfilled, and leachate treated according to the specific situation.

"Stale garbage" refers to the garbage that was previously landfilled and is now dug out for treatment. It generally has a long lifespan and the pretreatment technology is relatively backward, so it is directly landfilled. Now this part of the garbage needs to be reprocessed, so it is defined as old garbage and existing garbage, and the meaning of informal garbage is the same.

Stale garbage is reclassified and incinerated. Although the speed is fast, the treatment effect does not achieve the relatively large treatment effect of garbage resources. Stale garbage seriously endangers the health of the surrounding people and sorting workers. After being pulled to the incineration plant, it will also have a certain impact on the health of the incineration plant workers.