[ Evaluation de la charge polluante des lixiviats de la décharge contrôlée de la ville d'Essaouira (MAROC) ]
Volume 14, Issue 3, February 2016, Pages 863–874
Hamid Chiguer1, Fatiha El Khayyat2, Omar El Rhaouat3, Redouane RIFKI4, Adnane BENSAID5, Khadija El Kharrim6, and Driss Belghyti7
1 Laboratoire d'Environnement et Energies Renouvelables, Faculté des Sciences, Université Ibn Tofail de Kenitra, Morocco
2 Laboratoire d'Environnement et Energies Renouvelables, Université Ibn Tofaїl, Faculté des Sciences, BP. 133, code 14000, Kenitra, Morocco
3 Laboratoire Environnement et Energies Renouvelables, Faculté des Sciences, Université Ibn Tofail, B.P: 133, 14000 Kénitra, Morocco
4 Société GMF Pompage et Assainissement, 82 Bis, Av. Lalla Yacout, Casablanca, 20000, Morocco
5 Société GMF Pompage et Assainissement, 82 Bis, Av. Lalla Yacout, Casablanca, 20000, Morocco
6 Laboratoire Environnement et Energies Renouvelables, Faculté des Sciences, Université Ibn Tofail, B.P: 133, 14000 Kénitra, Morocco
7 Laboratoire Environnement et Energies Renouvelables, Faculté des Sciences, Université Ibn Tofail, B.P: 133, 14000 Kénitra, Morocco
Original language: French
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The management of leachate flow is a challenge for the operation of landfills in Morocco. This Essaouira which started in 2001, received in 2014, 72 tons of waste as daily average. This buried tonnage generates between 6 and 8 m3/d leachate
The objective of this study is to follow the evolution of the physico-chemical composition of leachate stored and therefore assess the purification performance of the adopted treatment system. To do this, leachate samples were collected and analyzed during the period from 2012 up to 2015. The analysis results show that despite the long stay in the leachate storage basin, the pollution organic and inorganic filler, is significant and almost stable over time.
The organic pollutant load is expressed as COD varying between 6106 and 13939 mgO2/L with a mean of 10361mgO2/L. It also resulted in BOD5 which is between 207 and 851 mgO2/L, with an average of 631 mgO2/L. Therefore the ratio of BOD5/COD is between 0.03 and 0.08 with an average of 0.06. This shows that the leachate studied are old and characterized by complex organic load and nonbiodegradable.
Mineral pollution is also present and marked by a high electrical conductivity which reached an average value of 39983?s/cm. The values of this organic and inorganic pollution, far beyond the limits of direct discharge into the receiving environment.
The metal composition of leachate is typical of landfills for household dominant. In fact the values obtained during this monitoring does not exceed the thresholds set by the Moroccan standard rejection besides chromium (avg=1720 mg/l) which has a much higher concentration than other discharges and which exceeds Moroccan standards rejection (avg=200?g/l).
Author Keywords: Landfill, leachate, pollution load, Essaouira, Morocco.
Volume 14, Issue 3, February 2016, Pages 863–874
Hamid Chiguer1, Fatiha El Khayyat2, Omar El Rhaouat3, Redouane RIFKI4, Adnane BENSAID5, Khadija El Kharrim6, and Driss Belghyti7
1 Laboratoire d'Environnement et Energies Renouvelables, Faculté des Sciences, Université Ibn Tofail de Kenitra, Morocco
2 Laboratoire d'Environnement et Energies Renouvelables, Université Ibn Tofaїl, Faculté des Sciences, BP. 133, code 14000, Kenitra, Morocco
3 Laboratoire Environnement et Energies Renouvelables, Faculté des Sciences, Université Ibn Tofail, B.P: 133, 14000 Kénitra, Morocco
4 Société GMF Pompage et Assainissement, 82 Bis, Av. Lalla Yacout, Casablanca, 20000, Morocco
5 Société GMF Pompage et Assainissement, 82 Bis, Av. Lalla Yacout, Casablanca, 20000, Morocco
6 Laboratoire Environnement et Energies Renouvelables, Faculté des Sciences, Université Ibn Tofail, B.P: 133, 14000 Kénitra, Morocco
7 Laboratoire Environnement et Energies Renouvelables, Faculté des Sciences, Université Ibn Tofail, B.P: 133, 14000 Kénitra, Morocco
Original language: French
Copyright © 2016 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The management of leachate flow is a challenge for the operation of landfills in Morocco. This Essaouira which started in 2001, received in 2014, 72 tons of waste as daily average. This buried tonnage generates between 6 and 8 m3/d leachate
The objective of this study is to follow the evolution of the physico-chemical composition of leachate stored and therefore assess the purification performance of the adopted treatment system. To do this, leachate samples were collected and analyzed during the period from 2012 up to 2015. The analysis results show that despite the long stay in the leachate storage basin, the pollution organic and inorganic filler, is significant and almost stable over time.
The organic pollutant load is expressed as COD varying between 6106 and 13939 mgO2/L with a mean of 10361mgO2/L. It also resulted in BOD5 which is between 207 and 851 mgO2/L, with an average of 631 mgO2/L. Therefore the ratio of BOD5/COD is between 0.03 and 0.08 with an average of 0.06. This shows that the leachate studied are old and characterized by complex organic load and nonbiodegradable.
Mineral pollution is also present and marked by a high electrical conductivity which reached an average value of 39983?s/cm. The values of this organic and inorganic pollution, far beyond the limits of direct discharge into the receiving environment.
The metal composition of leachate is typical of landfills for household dominant. In fact the values obtained during this monitoring does not exceed the thresholds set by the Moroccan standard rejection besides chromium (avg=1720 mg/l) which has a much higher concentration than other discharges and which exceeds Moroccan standards rejection (avg=200?g/l).
Author Keywords: Landfill, leachate, pollution load, Essaouira, Morocco.
Abstract: (french)
La gestion des flux de lixiviat, constitue un défi pour l'exploitation des décharges contrôlées au Maroc. Celle d'Essaouira qui a démarrée en 2001, a reçu en 2014, 72 tonnes de déchets comme moyenne journalière. Ce tonnage enfoui, génère entre 6 et 8 m3/j de lixiviat.
L'objectif de cette étude est de suivre l'évolution de la composition physico-chimique de lixiviats stockés et par conséquent, évaluer les performances épuratoires du système de traitement adopté. Pour ce faire, des échantillons de lixiviat ont été prélevés et analysés pendant la période allant de 2012 jusqu' à 2015. Les résultats d'analyses montrent que malgré le long séjour de lixiviat dans le bassin de stockage, la charge polluante organique et minérale, est importante et presque stable dans le temps.
La charge polluante organique est exprimée par la DCO qui varie entre 6106 et 13939 mgO2/L avec une moyenne de 10361mgO2/L. Elle est aussi traduite par la DBO5 qui est comprise entre 207 et 851 mgO2/L avec une moyenne de 631 mgO2/L. Donc le rapport DBO5/DCO oscille entre 0,03 et 0,08 avec une moyenne de 0,06. Cela montre que les lixiviats étudiés sont vieux, stables et caractérisés par une charge organique complexe et non biodégradable.
La pollution minérale est aussi présente et elle est marquée par une forte conductivité électrique qui atteint une valeur moyenne de 39983µs/cm. Les valeurs de cette pollution organique et minérale, dépassent largement les valeurs limites de rejet direct dans le milieu récepteur.
La composition métallique de lixiviats est typique des décharges contrôlées à caractère ménager dominant. En effet les valeurs obtenues au cours de ce suivi ne dépassent pas les seuils fixés par la norme marocaines de rejet à part le chrome (moy =1720 µg/l) qui présente une concentration très supérieurs à celles des autres décharges et qui dépasse les normes marocaines de rejet (mo.=200µg/l).
Author Keywords: Décharge contrôlée, lixiviat, charge polluante, Essaouira, Maroc.
How to Cite this Article
Hamid Chiguer, Fatiha El Khayyat, Omar El Rhaouat, Redouane RIFKI, Adnane BENSAID, Khadija El Kharrim, and Driss Belghyti, “Evaluation of the pollution load of leachates from the landfill in the city Essaouira (MOROCCO),” International Journal of Innovation and Applied Studies, vol. 14, no. 3, pp. 863–874, February 2016.
