1116-49931 - Sludge tank at a water treatment plant

832-341534 - Sewage treatment plant, clearing sludge towers, twilight, Germany, North Rhine-Westphalia, Dortmund

832-244859 - Aerial picture, Emschermuendung Dinslaken sewage work, Walsum, Duisburg, Ruhr area, North Rhine-Westphalia, Germany, Europe

832-244289 - Aerial photo, digester tanks, Emscher sewage works, night exposure, blue illumination, Extraschicht 2008 festival, Bottrop, Ruhr area, North Rhine-Westphalia, Germany, Europe

832-243907 - Aerial view of Emsch sewage treatment plant during the Extraschicht event, Bottrop, Ruhr Area, North Rhine-Westphalia, Germany, Europe

832-225792 - Four digestions tanks of the Bottrop clarification plant, North Rhine-Westphalia, Germany, Europe

832-195560 - Aerial photo, Emscher sewage treatment plant with digestion towers at night, Kolonie Emscher, Bottrop, Extraschicht 2009 cultural festival, night flight, Bochum, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

832-186537 - Sedimentation tank of the Duisburg-Kasslerfeld wastewater treatment plant, Duisburg, North Rhine-Westphalia, Germany, Europe

832-156217 - Aerial photo, Emscher sewage works, snow, Duisburg, Ruhr, North Rhine-Westphalia, Germany, Europe

832-156214 - Aerial photo, Emscher sewage works, snow, Duisburg, Ruhr, North Rhine-Westphalia, Germany, Europe

832-156623 - Aerial view, Emscher sewage treatment plant, Emscher river, Emscher course, Dinslaken, winter, snow, North Rhine-Westphalia, Germany, Europe

832-145684 - Manhole cover of the municipal water treatment works, old pavement, Lower Saxony, Germany, Europe

832-138269 - Aerial view, internal wastewater treatment plant of the Bayer Schering Pharma AG on Rutenbecker Weg street, Bayer Schering Pharma AG, a German pharmaceutical company, Wuppertal, North Rhine-Westphalia, Germany, Europe

832-138265 - Aerial view, internal wastewater treatment plant of the Bayer Schering Pharma AG on Rutenbecker Weg street, Bayer Schering Pharma AG, a German pharmaceutical company, Wuppertal, North Rhine-Westphalia, Germany, Europe

832-138270 - Aerial view, internal wastewater treatment plant of the Bayer Schering Pharma AG on Rutenbecker Weg street, Bayer Schering Pharma AG, a German pharmaceutical company, Wuppertal, North Rhine-Westphalia, Germany, Europe

832-133607 - Modern sewage treatment plant, digester towers, Kulmbach, Bavaria, Germany, Europe

832-133585 - Modern sewage treatment plant, view over a recirculation basin on digester towers, Kulmbach, Bavaria, Germany, Europe

832-133583 - Modern sewage treatment plant, view over a recirculation basin on digester towers, Kulmbach, Bavaria, Germany, Europe

832-133597 - Modern sewage treatment plant, view over a clarifier on digester towers, Kulmbach, Bavaria, Germany, Europe

832-133589 - Modern sewage treatment plant, view over a primary clarifier and recirculation basin for nitrification on digester towers, Kulmbach, Bavaria, Germany, Europe

832-133590 - Modern sewage treatment plant, view over a primary clarifier and recirculation basin for nitrification on digester towers, Kulmbach, Bavaria, Germany, Europe

832-133606 - Modern sewage treatment plant, control buildings and digester towers, Kulmbach, Bavaria, Germany, Europe

832-121580 - Sedimentation tanks at Lixao dump in the satellite city of Estrutural near Brasilia, Distrito Federal, Brazil, South America

832-123311 - Basins for sewage sludge, Hollerdau region, Bavaria, Germany, Europe

832-118904 - Aerial view, port Wesel, sewage plant, Ruhrgebiet region, Niederrhein, North Rhine-Westphalia, Germany, Europe

832-118764 - Aerial view, EmscherKunst art project, Silke Wagner, Glueckauf, Bergarbeiterproteste im Ruhrgebiet art project, digestion tank, Emscherkunst.2010 art project, art works on the Emscher river, Recklinghausen, Ruhr area, North Rhine-Westphalia, Germany, Euro

832-118765 - Aerial view, EmscherKunst art project, Silke Wagner, Glueckauf, Bergarbeiterproteste im Ruhrgebiet art project, digestion tank, Emscherkunst.2010 art project, art works on the Emscher river, Recklinghausen, Ruhr area, North Rhine-Westphalia, Germany, Euro

832-118800 - Aerial view, Seseke, tributary of the lip, SesekeKunst, Line of Beauty - the fifth treatment plant, Susanne Lorenz, cycle lane, Klaerwerk 4 four sewage treatment plant Kamen, Luenen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

832-118812 - Aerial view, EmscherKunst art project, garden art in the Bernepark park, former Bottrop sewage treatment plant, artist Piet Oudolf and GROss.MAX landscape architects, Bottrop, Ruhr area, North Rhine-Westphalia, Germany, Europe

832-121579 - Sedimentation tanks at Lixao dump in the satellite city of Estrutural near Brasilia, Distrito Federal, Brazil, South America

832-118799 - Aerial view, Seseke, tributary of the lip, SesekeKunst, Line of Beauty - the fifth treatment plant, Susanne Lorenz, cycle lane, Klaerwerk 4 four sewage treatment plant Kamen, Luenen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

832-100080 - Digestion tanks, sewage work, Emscher wastewater treatment plant, Bottrop, Ruhr area, North Rhine-Westphalia, Germany, Europe

832-100078 - Digestion tank, sewage work, Emscher wastewater treatment plant, Bottrop, Ruhr area, North Rhine-Westphalia, Germany, Europe

832-59560 - Aerial Photo, water production plants, clarifiers for the Ruhr River, Ruhr Valley, Witten, Ruhr Area, North Rhine-Westphalia, Germany, Europe

832-76983 - Digester towers illuminated at night, Bochum, North Rhine-Westphalia, Germany, Europe

857-32792 - Back River sewage treatment plant, Baltimore, MD

911-5674 - The biogas boilers at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5625 - Bubbles on the oxygenated water at Daveyhulme waste water treatment works in Manchester, England, United Kingdom, Europe

911-5668 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5669 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5638 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5643 - A control panel for the biogas boilers at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5620 - A combined heat and power plant at Daveyhulme waste water treatment plant, Manchester, England, United Kingdom, Europe

911-5635 - A contract worker at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5624 - Pumps oxygenate the sewage water at Daveyhulme waste water treatment works in Manchester, England, United Kingdom, Europe

911-5640 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5636 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5623 - Pumps oxygenate the sewage water at Daveyhulme waste water treatment works in Manchester, England, United Kingdom, Europe

911-5626 - Pumps oxygenate the sewage water at Daveyhulme waste water treatment works in Manchester, England, United Kingdom, Europe

911-5666 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5634 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5673 - The biogas boilers at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5672 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5633 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5639 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5667 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5630 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5629 - A control panel at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5670 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5671 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5675 - A control panels for the biogas boilers at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5642 - A control panel for the biogas boilers at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5641 - A control panel for the biogas boilers at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5637 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5627 - The motors that drive the oxygenating rotorsr at Daveyhulme waste water treatment works in Manchester, England, United Kingdom, Europe

911-5632 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5631 - The odour suppressant plant at Daveyhulme wastewater treatment plant in Manchester, England, United Kingdom, Europe

911-5617 - Settling tanks at Daveyhulme wastewater treatment plant (sewage works) in Manchester, England, United Kingdom, Europe

911-5616 - Settling tanks at Daveyhulme wastewater treatment plant (sewage works) in Manchester, England, United Kingdom, Europe