The wasteWOIMA® power plant uses several chemicals in the flue gas treatment system. These chemicals; urea, calcium hydroxide (hydrated lime) and activated carbon contain and reduce the harmful and potentially toxic compounds in the flue gas stream. The nitrogen oxides, sulphides, chlorides and heavy metals are mitigated to levels that are no longer detrimental to people or the environment and only water vapor and CO2 is released to the atmosphere through the stack.

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The plant’s flexibility in regard with chemicals is based on its ability to both use alternative chemicals and utilize the design chemicals in different quantities according to their quality.


Calcium hydroxide can be replaced with calcium carbonate and urea with ammonia water. The consumption of the design chemicals is dependent on their porousness and particle size. The choice is based on the local availability and cost of required chemicals.

Benefits of chemical flexibility

Follow our blog series “22 levels of wasteWOIMA® flexibility” to find out more about how these flexibilities can help You realize Your waste-to-value project.

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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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