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Latin American applied research

versión impresa ISSN 0327-0793


SARUBBI, A. J.  y  SANCHEZ SARMIENTO, G.. Leachate abatement inside solid waste landfill. Lat. Am. appl. res. [online]. 2009, vol.39, n.4, pp.307-315. ISSN 0327-0793.

Parameters such as chemical oxygen demand in leachate, organic biodegradable compound, specific weight, and settlements of solid waste disposed in large scale testing unit at Buenos Aires Sanitary Landfill were monitored for more than 20 years. The mathematical simulation formulae between these parameters and the solid waste age were established based on the data obtained from the testing landfill units, and justified by the data obtained at the closed landfill units. The long-term predictions for concentrations of leachate from the landfill were carried out through mathematical simulation of a set of formulae proposed. The results showed that the organic activity within the landfill was stabilized after 7 years of closing it, confirming the consolidation and biodegradable process and its rate over time. While the landfill reached this quasi-equilibrium state, the on-site treatment of leachate was achieved, with a significant reduction in costs. An improvement of the initial conditions in the engineering design phase was discussed, as well as, some optimization in maintenance post-closure activities. Additionally, the landfill's reintegration process and, the expansion of its capacity with minimal impact on the environment, were considered.

Palabras clave : Sanitary Landfill; Solid Waste; Biodegradation; Leachate; Settlement.

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