The heterogenous waste fuels, in particular MSW and industrial waste streams, used in waste-to-energy power plants often include valuable materials that can be recovered either prior to or after incineration. Metals, both ferrous and non-ferrous are one group that can quite easily be recovered after incineration from the bottom ash using complementing technologies such as sieving, crushing, as well as ballistic, magnetic and eddy current separation.
The bottom ash material composition is usually within the following ranges: 5–15 % ferrous metals, 1–5% non-ferrous metals, 10–30 % glass and ceramics, 1–5% unburned organics, and 50–70 % minerals.
The recovery of the scrap metal simultaneously fulfils three key goals
- Generating additional revenue from waste
- Saving virgin raw materials
- Reducing the mining, processing and transportation of metals
The minerals in the bottom ash offer additional revenue potential through replacing natural sand and gravel in infrastructure construction and construction products industry.
Combined, these WOIMAbenefits can generate up to 100,000€ of additional revenue during the WtE plant lifespan.
Follow the “Monetizing wasteWOIMA® Benefits” blog series to discover how our solution can save money for You.
Read more about us at www.woimacorporation.com
WOIMA Corporation is a Finnish supplier of best-in-class waste-to-value products, projects and services worldwide. We have developed solutions that enable us, and the customer, to transform and recycle virtually any waste stream into raw materials and energy. At WOIMA we combine Finnish engineering know-how in waste management with power generation design expertise. These solutions are used in Finland every day. They support the circular economy ideology and ensure that less than 1% of Finland’s waste ends up in landfills.
Our mission is to improve quality of life both locally and globally, as well as empower people to utilize waste as a commodity. Our decades of international project management experience ensure an on-time, in-budget and high-quality WOIMA solution delivery across the globe.
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