Residual waste is what remains after the separation of recyclable materials. Before the development of modern energy-from-waste technologies, most residual waste was sent to landfill.
Now the same waste can be delivered to energy recovery facilities where it is weighed and tipped directly into a bunker.
The waste is then delivered into combustion chambers heated to above 850°C. The combustion process reduces the waste to approximately 20% of its original volume, turning it into a non-hazardous form of ash. The process also heats up water in steel tubes within the boiler. The water is converted to superheated steam and delivered to a steam turbine that continuously generates electricity for onward transmission.
Flue gases are filtered and cleaned before being released via tall flue stacks. Ash from the furnace is collected separately and taken away for recycling and metal recovery.
Energy-from-waste is accepted as a less harmful waste management solution than landfill and is widely deployed across the UK and Europe.
The circular economy aims to maximise the utility of products, components and materials at all times. In this way, waste does not have to be wasted. This is our driving force.