Impact of the exploitation of the quarries on the environment and their rehabilitations (Casablanca-Mohammedia, Morocco)

We describe the problem and the negative impact engendered by the activity of exploitation of the quarries of the region of Casablanca-Mohammedia on the environment, most of which of these last ones were exploited to extract building materials, while most part of the exploited rocks are dolomites and limestones which constitute the reservoirs of the groundwaters of the region. The mismanagement of these quarries, and the bad choice to make of these quarries of the garbage dumps, which became the sources of pollution of the region, so putting in danger groundwaters and the environment surround. We shall take within the framework of this study as example the Mediouna landfill. The presents publication makes obvious a new technique for the treatment of the leachate of Mediouna landfill by the Diatomite. This last one was the object of a preceding study and that showed his usefulness in the filtration of worn waters.