Lixiviat de la décharge publique d'El Jadida (Maroc) : caractérisation et étude d'impact sur la nappe phréatique

Chofqi, Amina; Younsi, A.; Lhadi, El Kbir; Mania, Jacky; Mudry, Jacques; Véron, Alain

doi:10.4267/dechets-sciences-techniques.1592

Cited by 7 publications

(8 citation statements)

References 9 publications

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“…The waste production rate varies from region to region and may vary from 0.3 in rural to 0.76 kg/capita/day in urban areas [2]. Particularly, household waste treatment remains very little developed except for composting and landfilling, almost universalized by the Moroccan communes [3]. The current landfilling practices can no longer continue in view of the considerable damage it causes to the environment, such as ground and surface water pollution, soil pollution, impact on human health and greenhouse gas emissions [4,5].…”

Section: Introductionmentioning

confidence: 99%

Influence of hydraulic retention time on biogas production during leachate treatment

Baâti¹,

Makan²,

Bouadili³

et al. 2018

Environmental Engineering Research

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The main objective of this study is to investigate the influence of hydraulic retention time (HRT) on biogas production during leachate treatment using an anaerobic reactor type Upflow Anaerobic Sludge Blanket. For this purpose, four HRTs ranging from 12 to 48 h were experienced. The obtained results showed that higher amount of biogas could be produced during longer HRTs. However, HRTs longer than 48 h could not affect clearly the biogas generation and considered as unnecessary given the small additional amount of biogas produced during the degradation process. A volume of 0.434 L/Lleachate/d was achieved during the treatment with a HRT of 48 h. The higher biogas production, the smaller chemical oxygen demand (COD) values achieved. Besides, COD removal and biogas production positively correlate, showing that the active biomass has degraded effectively the organic load to produce biogas. Moreover, all the analyzed physicochemical parameters have experienced a decrease after 48 h except for the pH, which increased to approximately neutral value. More precisely, a decrease of 93.8%, 89.7%, 95%, 70%, 77%, and 84.4% was recorded for COD, electrical conductivity, total suspended solid, turbidity, NH4 +-N, and NO3-N, respectively.

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Section: Introductionmentioning

confidence: 99%

Influence of hydraulic retention time on biogas production during leachate treatment

Baâti¹,

Makan²,

Bouadili³

et al. 2018

Environmental Engineering Research

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“…COD and VFA were measured using the titrimetric and titration methods respectively. were also relatively high, compared to that of common landfill leachates [6] including Moroccans landfills leachates [55]. The ratio COD/NTK was also close to 17 and was within the optimal range (16 to 30) for bacteria growth [56].…”

Section: Methodsmentioning

confidence: 73%

Biogas recovery from fresh landfill leachates by using a coupled air stripping-up follow anaerobic sludge blanket (UASB) process

Moujanni

Qarraey

Ouatmane

2020

Environmental Engineering Research

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The present study focuses on fresh leachates treatment using anaerobic digestion. To overcome the unsuitable raw characteristics, appropriate pretreatment conditions were identified based on Batch tests. A subsequently optimized pretreatment-anaerobic two stages UASB coupled treatment was studied. The performance of the overall coupled treatment was assessed by monitoring volatile fatty acids (VFA), COD and ammonium removal, and biogas performance. Results showed that combining acidity correction to short aeration gives a synergetic effect and allowed appropriate anaerobic start-up conditions. Under continuous aerobic pretreatment-UASB digestion, significant removal of NH+4 (75.87%), COD (19.14%), and VFA (20.3%) were achieved during the aeration step resulting in the total abatement of 88.66%, 83.6% and 70.39% for NH+4, COD, and VFA, respectively. The process allowed good biogas performance up to 2,470 mL biogas/L and 123 mL CH4/gCOD removed, with gradual improvement from the first to the second UASB reactor. Inlet COD and VFA feeding rate seemed to be the main key parameters with 45.37 g COD/L.d and 18.43 g VFA/L.d as a critical threshold. Therefore, the anaerobic digestion of high COD leachates is highly feasible and the aerobic–anaerobic coupled treatment is a promising technical scenario that deserves further studies.

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“…The presence in groundwater of As has been reported by other authors in several Moroccan cities, as an example in El Jadida (Chofqi et al, 2007) and abroad in France (Grisey et al, 2010) and in India (Chakraborti et al, 2018). Arsenic is commonly found in the form of sulphur compounds and many metals.…”

Section: Fig 4 Scatter Diagram Of Cr Concentrations As a Function Omentioning

confidence: 68%

Contamination of heavy metals and metalloids of groundwater in the vicinity to the wild landfill of El Hajeb city (Morocco)

Gamar¹,

Zair²,

Kabriti³

et al. 2021

Int. J. Eng. Sci. Tech

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Lixiviat de la décharge publique d'El Jadida (Maroc) : caractérisation et étude d'impact sur la nappe phréatique

Cited by 7 publications

References 9 publications

Influence of hydraulic retention time on biogas production during leachate treatment

Influence of hydraulic retention time on biogas production during leachate treatment

Biogas recovery from fresh landfill leachates by using a coupled air stripping-up follow anaerobic sludge blanket (UASB) process

Contamination of heavy metals and metalloids of groundwater in the vicinity to the wild landfill of El Hajeb city (Morocco)

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