An Oxyswing oxygen generator equips the new biogas treatment plant in Ormes (10). The oxygen produced by this plant allows the removal of hydrogen sulfide - a toxic and corrosive gas - from the biogas. Characterized by its flexibility (the capacity of the generator can be increased by the simple addition of modules), the Oxyswing solution allows an autonomous production of oxygen which enters the highly efficient process of biogas desulfurization with O2.