Waste Recovery Management Scheme
A waste recovery management scheme focuses on converting solid waste into usable energy and safely disposing of the remaining waste. The key components include energy use, waste generation, transportation, storage, energy recovery, treatment, and final disposal.
Key Components:
- Waste Identification and Separation: Non-organic waste with varied characteristics is separated using techniques like size reduction, screening, and electronic scanning.
- Collection and Transportation: The most expensive component, requiring careful cost analysis and efficient implementation to minimize running costs.
Storage and Disposal: Waste is stored for resource recovery and final disposal after treatment, with careful selection of storage stations
Energy Recovery Systems:
Waste can be processed to recover energy, typically through:
- Separation Processes: Metals, paper, and glass can be separated from waste using size reduction, screening, vibrating sorting, and electronic scanning techniques. This makes the remaining waste more suitable for energy recovery.
- Conversion to Energy: The remaining waste can be converted into energy through methods like:
- Biogas Conversion: Organic waste is broken down anaerobically to produce methane (biogas), which can be used as a fuel.
- Electricity Generation: The energy recovered from waste can be used to generate electricity, either through biological conversion or thermo-mechanical processes.
- Composting: Organic waste can be composted to produce fertilizers, adding value to the waste management process.
- Conversion to Energy: The remaining waste can be converted into energy through methods like:
Treatment and Final Disposal:
- Waste is treated to reduce it to harmless forms, either with or without energy recovery.
- Common methods include incineration (burning waste in the presence of oxygen) and pyrolysis (breaking down waste using heat without oxygen).
- The cheapest final disposal method is systematic burial in the ground.
Considerations:
- The treatment methods should be socially, environmentally, and economically acceptable to ensure a sustainable waste recovery process.
