Olive Wastewaters' Impact on Oued Boufekrane in Meknes-Tafilalet

Abstract

Problem statement: Water quality of river Boufekrane is subject to heavy pollution exerted by population growth and industrial activity, including the OMW from the olive industry in which the presence of polyphenols and toxic effect dominant character may generate a higher organic pollution. Approach: Our objective is to "study the impact of OMW by analyzing the physicochemical parameters on seven sites along the bed of the Oued Boufekrane and value of Olive Mill Wastewater (OMW) polyphenols extracted as a biopesticide to contribute to environmental sustainability. Results: Results in quality that Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD5), Total Solid (TSS) greatly exceeds the discharge standards of the WHO and the pollution of the Oued Boufekrane increases from Ain Maarouf (source control) and downstream, therefore, these waters may be used either for irrigation or for swimming. Conclusion/Recommendations: The principal component analysis allowed us to confirm the spatiotemporal correlation between physicochemical parameters and stations of the river Boufekrane. Analysis of variance of OMW polyphenols against the pest aphid (Aphis citricola) found after 24 h exposure by ANOVA and followed by the self test at 1% used as polyphenols, compared with controls significantly affect the survival of stages in a statistically comparable according to the concentration.