The disposal of waste is an important measure for liberating land, protecting the environment and promoting sustainable development. Through waste treatment equipment, we can transform garbage into valuable resources, achieving the continuous development of the circular economy. The key to waste treatment lies in effective classification of waste and the use of advanced technologies and equipment to purify and handle the harmful substances in the garbage. Only through waste treatment can we improve public health, control pollution, reduce garbage production, and ultimately build a green and environmentally friendly society. 

I. The Importance of Handling Domestic Waste: 

The significance of dealing with old waste lies in the following aspects: 

The Importance of Reusing Land Resources: 

Disposing of garbage and recycling its resources is beneficial for releasing the land that was previously occupied by garbage dumps. After these lands are restored, they can be reused, which is of great significance for alleviating the shortage of urban land resources. 

2. Protecting the environment and controlling pollution: 

Outdated waste contains various harmful substances. If accumulated for a long time, it will cause continuous pollution to the soil, groundwater and air quality. Taking harmless treatment measures can effectively prevent the spread of pollutants and protect the ecological environment. 

The filtrate produced from waste materials and greenhouse gases (such as methane) are also significant sources of environmental hazards. Through the treatment process, the emission of the filtrate can be effectively reduced, and gases such as methane can be collected and utilized, thereby mitigating the impact of the greenhouse effect. 

3. Reduce the amount of household waste generated: 

Waste classification and resource utilization can significantly reduce the total amount and weight of waste, improve the efficiency of waste disposal, and decrease the demand for new landfill sites. 

4. Resource Recycling and Utilization: 

By utilizing advanced sorting technologies and equipment, useful resources can be extracted from garbage, such as metals, flammable substances and organic materials. These resources can be reused or converted into energy, such as biomass energy or recycled materials. 

Public health and safety: 

Disposing of waste helps improve environmental hygiene, protect residents' health and prevent the spread of diseases. 

Promoting sustainable development: 

By making use of waste resources for recycling, we can promote the emergence of the circular economy, which is in line with the green development concept advocated by the country and has positive significance for building a sustainable social development model. 

Overall, dealing with waste is not only an effective way to solve the environmental problems left over from the past, but also a crucial approach to promoting the recycling of resources and the development of an environmentally friendly society. 

II. The equipment used for handling waste materials is usually composed of the following main components: 

1. Pre-treatment equipment: 

Material conveying system: For instance, the chain feeder, which is used to steadily and continuously transfer old garbage to the subsequent processing line. 

Primary crushing equipment, such as jaw crushers, is mainly used to break down large pieces of waste materials, such as concrete and bricks. 

Medium-sized fragmentation machinery: Such as hammer-type fragmentation machines or impact fragmentation machines, are used to further break down the initially crushed waste to a finer particle size, which is necessary for subsequent processing. 

2. Screening equipment: 

The drum screening machine uses the rotation of the drum and the sieve holes to sort and classify the garbage according to the particle size. 

Vibrating screen: It is used to further classify the materials, separating different particle sizes of aggregates and other materials. 

Wind sorting device: Utilizing wind power technology for material sorting. Based on different densities, it separates lightweight materials such as plastics and paper from heavy materials. 

A device that uses the magnetic effect to separate metal fragments from garbage is called a magnetic separator. 

3. Sorting equipment: 

Manual garbage sorting workbench: Workers sort the garbage manually on this platform, removing the recyclable items. 

Intelligent classification system: Utilizing technologies such as photoelectricity, near-infrared, and AI image recognition, it enables intelligent identification and classification tasks. 

4. Biological Treatment System: 

Waste food processing equipment: Used for the fermentation treatment of organic waste to convert it into organic fertilizer. 

A bioreactor is a device that utilizes microorganisms to break down organic matter and produce biogas or other biomass energy. 

5. Resource Recycling System: 

Garbage compression and packaging equipment: It is used to compress and package the sorted materials for easier transportation and subsequent reuse. 

Waste recycling equipment: For instance, the recycled brick manufacturing equipment can transform discarded construction waste into recycled building materials. 

6. Auxiliary equipment and supporting facilities: 

Material conveying equipment: such as belt conveyors, bucket elevators, etc., are used to transport materials during the processing. 

Control system: A centralized electronic control system is adopted, which is used for the automatic monitoring and control of the entire production line. 

Ventilation equipment and dust removal system: Provide the necessary air flow power for the wind selection process, and at the same time reduce dust pollution. 

Raw material warehouse and storage equipment: Used for temporarily storing materials that are to be processed or have already been processed. 

Through the joint operation of these devices, the waste materials can be efficiently processed, achieving the goals of reduction, harmless treatment and resource utilization.