The use of geomembrane as a remediation towards a sustainable OMWW landfilling: Case study of Agareb site in Sfax, Tunisia

In Tunisia, olive mill wastewater (OMWW) locally named ‘margine’ constitutes a serious problem due to its huge amount, of about one million ton per year, and the high pollutant load resulting in excessive chemical oxygen demand (COD) values presence phytotoxic antibacterial polyphenols. The most common treatment OMWW was storage evaporation ponds which are authorized but uncontrolled. Thus, it represents potential contamination source natural resources (air, soil water) via infiltration. This study aims at critically analysing management on site Agareb Sfax, Tunisia. data relating production highlights that exceeds capacity uncomplete evaporation. geotechnical investigations confirmed spread through below basins. Furthermore, multiple slope sliding has been observed within embankments separating Faced with this alarming situation, assessment incorporation geomembrane is analysed order ensure sustainability landfilling. stability analysis based limit-equilibrium method (LEM) using Midas-Soil works software investigated. use can secure limit infiltrations landfill body sub-soils studied site.