Final settling tank at a Thames Water sewage treatment works, Cassington, Oxford. Once the Oxygen supplied bacteria has broken down the sewage into an inert sludge, the clarified water is then seperated and returned to the Thames via an outflow pipe.

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Size: 6000px × 4002px
Location: Cassington
Photo credit: © adrian arbib / Alamy / Afripics
License: Licensed
Model Released: No

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