Leachate recirculation in a landfill: some insights obtained from the development of a simple 1-D model
Leachate recirculation in a landfill: some insights obtained from the development of a simple 1-D model
The re-introduction of leachate back into the waste can play an important part in landfill management. It can encourage biodegradation by raising the water content and transporting bacteria, nutrients and waste products. It also enables leachate to be stored within the body of the landfill, for example to help minimise temporal variations in the load on a leachate treatment plant. It is helpful for a landfill operator to be able to estimate the rate at which the landfill can accept leachate (the maximum infiltration or injection rate), the storage capacity of the landfill and the leachate retention time. This paper discusses some of the insights obtained from the development and application of a simple conceptual model of leachate recirculation that can be used to estimate key parameter values on the basis of the hydraulic properties of the waste. The model is described, partly validated against a more rigorous numerical analysis, and then used to interpret data obtained from field tests on a real site. The shortcomings of the model in its current form are discussed, and suggestions are made as to how these might be addressed in the context of developing the model as a design tool.
1210-1221
White, J.K.
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Beaven, R.P.
5893d749-f03c-4c55-b9c9-e90f00a32b57
Powrie, W.
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Knox, K.
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June 2011
White, J.K.
b48a1bb2-5eac-4789-8b44-ee4c36951b37
Beaven, R.P.
5893d749-f03c-4c55-b9c9-e90f00a32b57
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Knox, K.
4ebdcf38-c95d-4245-8a30-daedf2dbd8d6
White, J.K., Beaven, R.P., Powrie, W. and Knox, K.
(2011)
Leachate recirculation in a landfill: some insights obtained from the development of a simple 1-D model.
Waste Management, 31 (6), .
(doi:10.1016/j.wasman.2010.10.022).
Abstract
The re-introduction of leachate back into the waste can play an important part in landfill management. It can encourage biodegradation by raising the water content and transporting bacteria, nutrients and waste products. It also enables leachate to be stored within the body of the landfill, for example to help minimise temporal variations in the load on a leachate treatment plant. It is helpful for a landfill operator to be able to estimate the rate at which the landfill can accept leachate (the maximum infiltration or injection rate), the storage capacity of the landfill and the leachate retention time. This paper discusses some of the insights obtained from the development and application of a simple conceptual model of leachate recirculation that can be used to estimate key parameter values on the basis of the hydraulic properties of the waste. The model is described, partly validated against a more rigorous numerical analysis, and then used to interpret data obtained from field tests on a real site. The shortcomings of the model in its current form are discussed, and suggestions are made as to how these might be addressed in the context of developing the model as a design tool.
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e-pub ahead of print date: 12 February 2011
Published date: June 2011
Organisations:
Civil Engineering & the Environment
Identifiers
Local EPrints ID: 76185
URI: http://eprints.soton.ac.uk/id/eprint/76185
ISSN: 0956-053X
PURE UUID: 03dfe7d3-a8e9-4013-9a51-b0c484291a8a
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:40
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Author:
J.K. White
Author:
K. Knox
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