ASSESSMENT OF PHYSICOCHEMICAL QUALITY OF THE POLLUTING LOAD OF LEACHATES FROM THE WILD DUMP OF EL HAJEB CITY (MOROCCO)

Abderrahmane Gamar; Zakaria Khiya; Touria Zair; Mohammed El Kabriti; Abdelaziz Bouhlal; Fatima El Hilali

doi:10.29121/granthaalayah.v5.i6.2017.1997

Authors

Abderrahmane Gamar Research team of Chemistry of the Bioactive Molecules and the Environment. Department of Chemistry. Moulay Ismail University, Faculty of Sciences, Meknes 2 Laboratory of Chemistry of Materials and Biotechnology of Natural Products (Chima-Bio). Department of Chemistry. Moulay Ismail University, Faculty of Sciences, Meknes
Zakaria Khiya Research team of Chemistry of the Bioactive Molecules and the Environment. Department of Chemistry. Moulay Ismail University, Faculty of Sciences, Meknes 2 Laboratory of Chemistry of Materials and Biotechnology of Natural Products (Chima-Bio). Department of Chemistry. Moulay Ismail University, Faculty of Sciences, Meknes
Touria Zair Research team of Chemistry of the Bioactive Molecules and the Environment. Department of Chemistry. Moulay Ismail University, Faculty of Sciences, Meknes 2 Laboratory of Chemistry of Materials and Biotechnology of Natural Products (Chima-Bio). Department of Chemistry. Moulay Ismail University, Faculty of Sciences, Meknes
Mohammed El Kabriti National Laboratory of the Studies and the Surveillance of the Pollution (NLSSP), Rabat
Abdelaziz Bouhlal Laboratory of the National Office of Electricity and Drinking Water (LNOEW)-drinking water branch, Meknes, Morocco
Fatima El Hilali Research team of Chemistry of the Bioactive Molecules and the Environment. Department of Chemistry. Moulay Ismail University, Faculty of Sciences, Meknes 2 Laboratory of Chemistry of Materials and Biotechnology of Natural Products (Chima-Bio). Department of Chemistry. Moulay Ismail University, Faculty of Sciences, Meknes

DOI:

https://doi.org/10.29121/granthaalayah.v5.i6.2017.1997

Keywords:

Leachate, Physicochemical, Analysis, Dump, Pollution

Abstract [English]

The dump in the town of El Hajeb (Morocco) is devoid of a collection and treatment system of the generated brownish effluents known as leachates. In a permeable soil and of a water table circulating in shallow depth, these percolate, after their generation, accumulate at the bottom of the waste and can infiltrate through the ground to reach the underlying water table, thus causing its contamination. Leachate would require, therefore, a specific treatment before their rejection in the receiving environment. This study aims to make a physicochemical characterization of these leachates. To do this, we conducted a series of sampling, from May 2015 to January 2017. During this period, the physicochemical analysis revealed, on the one hand, that it is discharge juice in the acidogenesis phase, conveying a significant pollutant load rich in organic and inorganic matter (COD = 23597.5 ± 595.61 mgO₂L^-1), in mineral salts (EC = 17.55 ± 0.72 mS cm^-1) and in nutrient salts (TKN = 888.54 ± 13.53 mg-N L^-1 and TP = 139.65 ± 48.89 mg-P L^-1), concentrations exceed the values allowed by Moroccan and international standards, what makes these effluents toxic to the surrounding environment. By the present study, we incite decision-makers to manage well effectively the discharges taking into account the risks of the leachates generated.

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