Impact of stabilized leachate residues from the uncontrolled landfill of Mohammedia city on the ‘’Oued El Maleh’’ river and on the soil

Laaouan, M.; Souabi, Salah; Aboulhassan, M. A.; Tahiri, M.

doi:10.26872/jmes.2017.8.12.474

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…These results indicate that the groundwater in these samples is generally neutral to slightly alkaline, which is safe for human consumption. This is consistent with previous studies conducted in Varanasi (India), Dar Bouazza and Mohammedia-Benslimane (Morocco) by Mishra et al [3], Laaouan et al [5] and Merbouh et al [6] respectively.These studies also found that the groundwater quality in those regions met the required standards. The fact that the nearby wells do not show signs of increased acidity further suggests that there is no significant leachate leakage.…”

Section: Resultssupporting

confidence: 93%

Assessment of groundwater quality in the region of Hjar Nhal for safe drinking water purposes

Lahkim-Bennani,

Bennani,

Afilal

et al. 2024

E3S Web Conf.

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This study assesses the groundwater quality in the vicinity of the newly established landfill site in the city of Tangier. A total of 8 wells and 2 water sources within a 2-kilometer radius of the landfill were sampled for analysis. The selection of sampling sites was carefully executed, taking into consideration the flow direction and elevation in the study area to ensure representative results. The study focused on the analysis of 11 physicochemical parameters to evaluate the suitability of the groundwater for drinking and irrigation purposes. Notably, the pH measurements at various points (S1, S2, P4, P7, P8) consistently fell within the WHO's recommended range of 6.5-8.5 for safe drinking water. Conductivity values (μS/cm) were well below the limit of 1000 μS/cm at each location, indicating low levels of dissolved ions. Additionally, the TDS levels (ppm) did not exceed the WHO limit of 500 ppm, further confirming water quality that meets international standards. These findings provide valuable insights into the groundwater quality for safe drinking water and irrigation purposes in the area. The results contribute to informed decision-making and sustainable water resource management practices, ensuring the preservation of local water resources in the context of the landfill's environmental impact.

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Section: Resultssupporting

confidence: 93%

Assessment of groundwater quality in the region of Hjar Nhal for safe drinking water purposes

Lahkim-Bennani,

Bennani,

Afilal

et al. 2024

E3S Web Conf.

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“…The characterization of the average leachate has shown that the BOD5/COD ratio varies between 0.2 to 0.13, which shows that the leachate is rich in organic matter and not biodegradable (humic and fulvic substances) which can cause several impacts on the water surface and groundwater [28].…”

Section: Leachate Characteristicsmentioning

confidence: 99%

Reducing Pollution of Stabilized Landfill Leachate by Mixing of Coagulants and Flocculants: A Comparative Study

Kastali¹,

Mouhir²,

Madinzi³

et al. 2022

Environmental Management - Pollution, Habitat, Ecology, and Sustainability

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The physico-chemical process of coagulation-flocculation is very efficient and economical for the treatment of leachate. The latter can have considerable impacts on the environment. The leachate from the landfill of the city of Mohammedia is characterized by a high COD content which varies between 2200 and 2700 mg/l, a total Kjeldahl nitrogen concentration varying from 1080 to 1405 mg/l while the ammonium content has a concentration varying between 587 and 1410 mg/l. Organic matter is not readily biodegradable (BOD5/COD: 0.2 to 0.13). Metal concentrations ranged from 0.1 to 4.2 mg/l for Cr, 40 to 5 mg/l for Cd, and 0.3 to 0.8 mg/l for lead. For monitoring the leachate treatment, several coagulants and flocculants were used (FeCl3, Al2(SO4)3, Alginate, cationic flocculants, anionic flocculants). In parallel with the monitoring of the physicochemical parameters we followed the production of the volume of the settled sludge over time. Treatment with all coagulants and flocculants used is pH dependent. Ferric Chloride has been shown to be effective at a pH of 6.5 while for Aluminum Sulfate the optimum pH is 5.3. The results showed that coagulation-flocculation by Ferric Chloride and Aluminum Sulfate is very effective in reducing turbidity. This reduction reaches 95 and 98% respectively for FeCl3 and Al2(SO4)3, while the reduction in COD for the two coagulants is around 60%. Organic flocculants alone do not lead to a significant reduction in turbidity and COD, while their combination with coagulants marks a good reduction in pollution. Hydrated iron hydroxides precipitate more easily than flocs formed by aluminum, resulting in more efficient removal of pollutants than that obtained at lower pH values. The order of introduction strongly influences the coagulation flocculation. The optimal doses of the various coagulants and flocculants chosen for the study vary from one reagent to another. FeCl3 remains the most suitable coagulant to further eliminate organic and metal pollution. The cost associated with the treatment using flocculants remains much higher when the flocculant is used in admixture with a coagulant.

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Impact of stabilized leachate residues from the uncontrolled landfill of Mohammedia city on the ‘’Oued El Maleh’’ river and on the soil

Cited by 2 publications

References 8 publications

Assessment of groundwater quality in the region of Hjar Nhal for safe drinking water purposes

Assessment of groundwater quality in the region of Hjar Nhal for safe drinking water purposes

Reducing Pollution of Stabilized Landfill Leachate by Mixing of Coagulants and Flocculants: A Comparative Study

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