Page 59 - Waste-to-Energy in the Danube Strategy Region. Challenges and Prospects

Incineration of one ton of waste produces 250 kg of slag, which can be either landfilled or

reused, for example, in road construction (as is allowed in Germany). Additionally, about 25 kg of
scrap iron can be recycled, whereby it is extracted and sold to the metal industry. Approximately

20 kg of boiler ash, 30 kg of filter ash and 1 kg of filter cake are solidified and then landfilled. The

process also produces about 4 kg of gypsum, a valuable raw material typically sold to the

construction industry (EVN Abfallverwertung 2015).

Zwentendorf WtE plant is equipped with state-of-the-art technology carrying out the
aforementioned processes to guarantee the most efficient operation and lowest possible

emissions. Its construction was enabled thanks to long-term political efforts in waste management

both regionally and nationally, overcoming a number of legislative, technical, economic,
infrastructural and social challenges. These challenges and the ways which they were addressed

are examined in detail in the following sections.

Project co-funded by the European Union
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