Rotten garbage is the product of natural degradation of household waste after being buried or piled up in landfills for many years. Rotten garbage is also known as landfill waste, heap waste, mineralized waste, and stored waste. After landfilling, the composition of household waste will undergo significant changes, and organic vegetables and other waste will decompose over time. The proportion of difficult to degrade bamboo and wood is relatively small. Leather, fabric, metal, and other materials will not decrease in volume over time of burial.

The stale garbage sorting equipment separates various substances mixed in stale garbage for deep processing. The main components of stale garbage include stable inert waste, stones, glass, etc., biologically recalcitrant organic matter (rubber, plastic film, etc.), a small amount of metals, and the rest is mostly humus soil. The production line for screening and sorting stale garbage generally includes feeding conveyors, garbage crushing equipment, shaftless drum screening machines, air separators, bouncing screening machines, bar screening equipment, garbage packaging and compression equipment, etc. The drum screen screens according to the difference in material particle size, the air separator screens according to the weight of the material, the baler compresses combustible materials for easy transportation, and the feeder feeds uniformly to ensure the sorting efficiency of subsequent equipment.

The classification of stale garbage can effectively eliminate existing sources of pollution, improve the ecological environment, and achieve environmental and social benefits