Recent Advances in Landfill Leachates Treatment Technology
L. Salami *
Environmental Engineering Research Unit, Department of Chemical Engineering, Lagos State University, Epe, Lagos State, Nigeria.
K. B. Salami
Department of Mechanical Engineering, Federal University of Technology, Akure, Ondo State, Nigeria.
T. A. Salami
Department of Electrical Engineering, Federal Ministry of Works, Lagos State, Nigeria.
T. A. Salami
Lagos State Ministry of Physical Planning, Lagos State, Nigeria.
A. A. Susu
Department of Chemical Engineering, University of Lagos, Akoka, Yaba, Lagos State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Landfill leachate is a threat to vegetation, surface and groundwater integrity. The treatment is very crucial to avert inherent dangers pose by this leachate. This aim of this work is to look at the recent development in the treatment technologies for landfill leachates with a view of proffering possible treatment technologies for Lagos landfill leachate. The physical and chemical treatment technologies identified to be suitable for treatment of Lagos landfill leachates include coagulation and flocculation, recirculation, activated carbon and membrane filtration. The biological treatment technologies that are likely to yield a better treatment for Lagos landfill leachates are aerated lagoons, sequential batch reactor (SBR), rotating biological contractor (RBC), anaerobic ammonium oxidation (anammox) and upflow anaerobic sludge blanket (UASB). The use of combination of the aforementioned treatment technologies will yield the best treatment. For the identified treatment technologies for the treatment of Lagos landfill leachates, studies need to be carried out to ensure compliance with the discharge limits as this work provided a very fundamental platform for further research on the treatment of Lagos landfill leachates.
Keywords: Contamination, danger, landfill, leachates, technology and treatment