Waste water treatment. View of waste water entering a pool at water treatment plant. The water is undergoing a preliminary flotation separation process. Detergent foam (lower centre) floats on the surface of the water. This allows the waste water to be drained off and treated separately. Photographed in England | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Tek Image |
Taille de l’image : | 4264 px × 4191 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |