Sewage treatment plant. The sewage is trickled onto a bed of organic material, which filters it and allows it to be broken down and absorbed micro-organisms. Filmed at Kidwelly sewage works, Wales. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Davies, Andy |
Modell-Rechte: | nicht erforderlich |
Länge: | 31 Sekunden |
Seitenverhältnis: | 16:9 |
Restrictions: | - |