Uploaded on 2017-08-01 by Bianca Fachin

My picture describes a process of reuse of water. This tunnelling is on Brazil - Sao Paulo and it has been constructed for Line 05, Purple. In this case the construction is almost 30 meters underground and for that reason they need to lower the level of the water. The water that return from ground is treated in four decanting station before using. It takes approximately three days for the water be clean and it is used to wash the tracker’s wheel, the construction site and after that it is deposited on community sewer.