The screening treatment of landfill sites is of great significance for environmental protection, resource recycling and utilization, and land protection. By separating recyclable components, preventing environmental pollution, and controlling greenhouse gas emissions, the efficiency and economic benefits of garbage disposal have been improved. Corresponding equipment such as screening equipment, crushing equipment, sorting equipment, etc. also play a key role. Garbage screening treatment is a necessary measure to achieve the goals of waste reduction, resource utilization, and harmlessness, which is in line with modern environmental protection concepts and sustainable development requirements.

The screening treatment of landfill waste has multiple important meanings, mainly including the following aspects:

1. Resource recycling and utilization:

Screening treatment can effectively separate recyclable components such as metals, plastics, glass, paper, etc. from garbage, which can be reused in production cycles, reducing the demand for new raw materials and promoting the development of circular economy.

2. Environmental protection:

Reduce environmental pollution: Screening can separate harmful waste separately, such as waste batteries, waste chemicals, fluorescent tubes, etc., to prevent their leakage and cause soil and groundwater pollution.

Control greenhouse gas emissions: Through aerobic pretreatment, landfill gas (mainly composed of methane) can be released and collected for energy utilization, reducing greenhouse gas emissions.

3. Land resource protection:

Through screening treatment, the volume of garbage is significantly reduced, which can reduce the footprint of landfills and facilitate the rational allocation and conservation of land resources.

For already saturated landfills, after excavating and screening aged garbage, the site can be restored and reused, such as as as green spaces, parks, or other construction sites.

4. Improve processing efficiency and economic benefits:

The automation and mechanization of garbage screening and processing equipment greatly improve the efficiency of garbage treatment, reduce labor costs, and also enhance the economic benefits of the garbage treatment industry.

The sorted combustibles can be used for incineration power generation, which not only solves the problem of garbage disposal, but also generates electricity and generates certain economic benefits.

5. Meet environmental policy requirements:

With the increasingly strict environmental regulations, the requirements for garbage disposal are also increasing. Landfill waste screening treatment helps to achieve the goals of waste reduction, resource utilization, and harmlessness, which is in line with modern environmental protection concepts and sustainable development strategies.

In summary, the screening treatment of landfill waste is of great significance in improving the overall level of waste management, promoting green economic development, and improving the ecological environment.

The screening and treatment of stale garbage is a complex process that involves multiple links and equipment. Here are some of the main devices:

1. Screening equipment:

Roller sieve: used to screen out raw materials below 40mm, mainly organic chemical soils.

Star sieve: Screen organic chemical soils below 50mm, suitable for landscape afforestation.

Vibration screen: used to screen materials such as stones with a diameter of 40mm or more.

Rat cage screening: Select materials with a diameter of 200mm or more.

Wind sorting equipment: Separate light and heavy materials from 40-200mm raw materials. Heavy materials can be used for on-site backfilling of raw waste, while light materials are transported to the sorting equipment for further sorting.

2. Crushing equipment:

Cutting crusher, blade crusher, jaw crusher, etc.: used to crush stale garbage into smaller particles or particles of specified size for subsequent sorting and processing.

3. Sorting equipment:

Magnetic separator: used to separate useful metal materials, especially iron.

Equipment such as sorting machines, electrostatic generators, industrial exhaust fans, etc.: classify waste plastics and dirt.

4. Transmission equipment:

Scale feeder, belt conveyor, chain plate conveyor, etc.: used for material transportation during garbage feeding and sorting processes, as well as process connection of key equipment.

5. Packaging equipment:

Fully automatic packaging machine: used for packaging waste plastics.

In addition, the screening and treatment of stale garbage may also involve other auxiliary equipment, such as dust removal equipment, noise reduction equipment, etc., to ensure the environmental protection and safety of the treatment process.

Please note that the specific equipment configuration and selection should be determined based on the composition, processing scale, processing requirements, as well as local environmental and economic conditions of the aged garbage. Therefore, in practical operation, it is recommended to consult professional waste treatment equipment suppliers or related institutions to obtain more specific and personalized solutions.