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File:Trickling filter bed 2 w.JPG

Description
English: Sewage treatment trickling filter bed using plastic media – small rural treatment plant at Beddgelert sewage treatment works, Gwynedd, Wales, UK.
Date 11 January 2005
Source Own work (taken by user Velela with a Pentax Optio555 digital camera. 1/50sec @ f2.8)
English: Transferred from en.wikipedia.org : 2005-01-16 21:23 . . Velela . . 1296x972 (680941 bytes)
Author Velela
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GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

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attribution share alike		 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Velela
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