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Factors Affecting the Stability of Bioreactor Landfills


Author(s):

Basil Jaimon , Ammini College of Engineering Palakkad

Keywords:

Bioreactor Landfills; Municipal Solid Waste; Landfills; Stability; Injection pressure

Abstract:

With the urbanization and industrialization, the generation of waste on global scale increased tremendously. Among the wastes generated by various human activities the lead is contribute by the Municipal Solid Waste. Thus the disposal and handling of these wastes became a tedious problem of human society. Primarily these wastes are disposed off in natural vaults, burned etc, until it became unmanageable by its volume. To break this bottleneck procedure, Bioreactor Landfills are developed. Unlike the conventional landfills these are the ones which aid the easy, fast and safe decomposition of waste materials through leachate recirculation. The leachate generated by the decomposition of the Municipal Solid Waste is collected at the bottom and are recirculated under pressure within the landfills, along with supplements of nitrogenous materials. This helps in the fast degradation and decomposition of MSW. This pressurized injection of the leachate causes increase in the pore pressure inside the landfills, leading to stability problems. Also the heterogeneity of waste materials also plays a key role in the stability analysis. As the leachate is injected under high pressure through horizontal trench system, the geometry of HTS and injection pressure affects the factor of safety. It is also reported that the gas generated during the waste degradation contribute to increase in pressure leading to failure of side slope. This paper discus about the various factors contributing to the stability of Bioreactor Landfills.


Other Details:

Manuscript Id :IJSTEV4I1013
Published in :Volume : 4, Issue : 1
Publication Date: 01/08/2017
Page(s): 39-43
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