Waste sorting and processing is an essential part of urban environmental sanitation management. Effective sorting can greatly improve the utilization rate of waste resources and reduce environmental pollution. In this process, a series of professional equipment is used to complete the classification, screening, recycling, and other tasks of waste. Here are some common types of equipment and their functions in domestic waste sorting and processing:
1. Waste Reception and Pre-treatment Equipment
- Waste unloading platform: This is the first stop for waste entering the treatment plant, used for unloading waste from various areas.
- Crusher: Used to break large pieces of waste into smaller pieces, facilitating subsequent sorting and processing.
2. Automated Sorting Equipment
- Optical sorter: Utilizing infrared spectral analysis technology, it can identify different types of waste such as plastic, paper, and metal based on their different reflective characteristics.
- Magnetic separator: Separates ferrous metals through a magnetic field, an important tool for recycling steel products.
- Eddy current separator: Used for the separation of non-ferrous metals (such as aluminum, copper), achieved by generating eddy current effects.
- Air classifier: Uses air currents to separate light materials (such as paper, film) from heavy materials.
3. Physical Sorting Equipment
- Vibrating screen: Screens out particles of different sizes through vibration.
- Drum screen: Suitable for preliminary screening of large waste, effectively removing large-sized impurities.
4. Manual Sorting Stations
Despite the continuous improvement of automation, manual participation is still required for fine sorting in some cases, especially when dealing with complex and variable domestic waste.
5. Post-processing Equipment
- Compression baler: Compresses recyclables into block form for easy storage and transportation.
- Crushing and cleaning equipment: Used for deep processing of items such as plastic bottles and glass bottles to facilitate recycling.
6. Control and Management Systems
To ensure the efficient operation of the entire sorting process, advanced control systems and information management systems are also required, including but not limited to surveillance cameras, sensor networks, computer control systems, etc. These technological means can help monitor the waste processing process in real-time, ensuring that all operations comply with environmental protection standards.
Through the comprehensive application of the above equipment, not only can effective waste classification be achieved, but it also promotes the recycling of resources, reduces pressure on the environment, and promotes sustainable development.