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Geosciences 2018, 8(10), 372; https://doi.org/10.3390/geosciences8100372

Assessment of Leachate Production from a Municipal Solid-Waste Landfill through Water-Balance Modeling

1
Research Area 1 “Landscape Functioning”, Working Group “Hydropedology”, Leibniz-Centre for Agricultural Landscape Research (ZALF), Eberswalder Straße 84, 15374 Müncheberg, Germany
2
Institute of Plant Nutrition and Soil Science, Christian Albrechts University Kiel, 24118 Kiel, Germany
*
Author to whom correspondence should be addressed.
Received: 15 August 2018 / Revised: 29 September 2018 / Accepted: 8 October 2018 / Published: 10 October 2018
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Abstract

Mineral temporary capping systems of landfills are required to accomplish the long-term coverage prerequisites or to use them as a basis layer prior to later permanent sealing. Such a capping system for a municipal waste landfill in Rastorf (Northern Germany) was developed and tested for its sealing capability on the basis of observed and simulated water balance components for the period between 2008 and 2015, considering observed local weather data and complemented by the Hydraulic Evaluation of Landfill Performance (HELP 3.95 D) model. The modeling results of this case study could be improved by the correction of previously used global solar radiation data due to the consideration of exposure and inclination angle of landfill surface areas. The model could positively be validated by comparing observed and simulated outflow (surface runoff and lateral drainage) data with R2 values ranging between 0.95 and 0.99, as well as for the leachate rates with R2 values of 0.78–0.87. The statistical-empirical HELP model was found useful in predicting the leachate generation of a temporary landfill capping system for specific soil and site conditions, even if only a restricted set of observed data was available. View Full-Text
Keywords: water balance; HELP model; global solar radiation; leachate water balance; HELP model; global solar radiation; leachate
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Beck-Broichsitter, S.; Gerke, H.H.; Horn, R. Assessment of Leachate Production from a Municipal Solid-Waste Landfill through Water-Balance Modeling. Geosciences 2018, 8, 372.

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