Europe is the most important producer of olives in the world. A significant part of the olives harvested are processed to produce olive oil in several thousand of mills. These producers are mainly placed in the basin of the Mediterranean Sea (Greece, Italy, Spain, and other countries), and all of them with the common trouble of the wastewater generated in the process. Many of them are small and medium sized enterprises, without enough economical resources to afford expensive solutions for the problem of this wastewater. It is necessary to join forces and resources together in order to find an economical and easy solution.
Concurrently, a solid residue is produced within the olive oil production, which is usually burned or deposited in olive farms.