Use of combination of coagulation and adsorption process for the landfill leachate treatment from Casablanca city

This article presents a combination of coagulation–flocculation and powder activated carbon (PAC) adsorption as a treatment process for landfill leachate. Leachates were collected from a municipal solid waste landfill in Mediouna site, Casablanca city. Ferric chloride (FeCl3) is used here as a coagu...

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Veröffentlicht in:Desalination and water treatment 2017-07, Vol.83, p.262-271
Hauptverfasser: Chaouki, Zineb, Khalil, Fouad, Ijjaali, Mustapha, Valdés, Héctor, Rafqah, Salah, Sarakha, Mohamed, Zaitan, Hicham
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Sprache:eng
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Zusammenfassung:This article presents a combination of coagulation–flocculation and powder activated carbon (PAC) adsorption as a treatment process for landfill leachate. Leachates were collected from a municipal solid waste landfill in Mediouna site, Casablanca city. Ferric chloride (FeCl3) is used here as a coagulant to study the optimum conditions for the removal of chemical oxygen demand (COD), colour, total suspended solids (TSS) and turbidity in jar tests. This coagulant showed the highest removal efficiency in terms of COD (62.5%), turbidity (92.5%), colour (80%) and least sludge volume generation (30% v/v) for an optimum coagulant dose of 12 g Fe3+ L–1. Combining coagulation with adsorption process onto PAC enhances the removal of COD, turbidity and colour reduction by a 77%, a 99% and a 99.7%, respectively. These results show that coagulation-adsorption could be used as a promising hybrid process for the treatment of landfill leachates.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.5004/dwt.2017.20743