Fly Ash
Fly Ash and APC Residues (Air Pollution Control Residues) are the by-products of the flue gas cleaning process in EfW and Combustion processes and can often be combined into one waste stream. Fly Ash, which is a light-weight ash, can be recovered and used in a manufacturing process, such as cement manufacture. APC residue is typically a mixture of ash, carbon and lime. It is a Hazardous Waste which is currently disposed of at a Hazardous Landfill or undergoes further processing such as washing or stabilisation to send to a Non-Hazardous Landfill[1] normally in a Stabilised Non-Reactive Hazardous Waste Cell .
References
- ↑ WRAP, 2019. EfW Outputs and Residues Guidance on the management of energy outputs and residues including air pollution control residues and incinerator bottom ash. [online] EfW Development Guidance. [Accessed 30 Oct. 2019]