Page 57 - Waste-to-Energy in the Danube Strategy Region. Challenges and Prospects

Figure 13. Zwentendorf plant technology scheme (EVN Abfallverwertung 2018a)

A basic schematic of the plant is presented in Figure 13 above. Most important are the
grate firing and boiler sections, representing the heart of the plant, and the three cleaning stages,

namely the fabric filters, scrubber and DeNOx system (EVN Abfallverwertung 2018a).

In the first step, waste is delivered to the plant mostly by rail. In Lower Austria alone there

exist ten reloading stations where waste is collected, pressed and loaded into containers. The plant

is equipped to handle waste deliveries by truck as well. Waste is transported in special designed
airtight containers, each of which can hold up to 14 tons of waste. Approximately 250 of these

containers are delivered daily from the Lower Austria region and from Italy (EVN Abfallverwertung

2015).
Two unloading stations equipped with cranes lift and discharge the containers with waste

directly into the storage bunkers. Zwentendorf is endowed with the largest waste capacity in

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Austria, consisting of two bunkers with a combined capacity of 40,000 m . The larger of the two
has a capacity of 30,000 m and is connected to the smaller one by a bridge. The bunkers also
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serve as the location where the delivered waste is mixed by three clamshell cranes, each of which

Project co-funded by the European Union
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