Stock Photo - Dortmund, Ruhr area, North Rhine-Westphalia, Germany - city panorama of Dortmund, walkers on the Deusenberg in front of the skyline of the Dortmund city center, in the back the Florian and Dortmunder U television tower, in front the digestion towers of the Emscher sewage treatment plant Dortmund Deusen, the sewage treatment plant is now receiving a 4th purification stage, which cleaned it Wastewater also freed from drug residues.

Stock Photo: Dortmund, Ruhr area, North Rhine-Westphalia, Germany - city panorama of Dortmund, walkers on the Deusenberg in front of the skyline of the Dortmund city center.

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