Wien, Vienna: Main sewage treatment plant Vienna : aeration tanks of the 2nd stage, Austria, Wien, 11.

---

Size: 4928px × 3264px
Photo credit: © volkerpreusser / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 11., 2nd, :, aeration, austria, economy, europe, main, plant, sewage, stage, tanks, treatment, vienna, vienna:, wien