Validation of the hydrologic evaluation of landfill performance (HELP) model for simulating the water balance of cover systems

Berger, Klaus

doi:10.1007/s002549900090

Cited by 37 publications

(24 citation statements)

References 10 publications

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“…The HELP model has been extensively tested by its developers (Peyton and Schroeder, 1988;Schroeder et al, 1994) and also been compared with Richards' equation based approaches as well as field results under various conditions (Fleenor and King, 1995;Woyshner and Yanful, 1995;Benson and Pliska, 1996;Khire et al, 1997;Chammas et al, 1999;Berger, 2000;Gogolev, 2002;Risser et al, 2005). Risser et al (2005) used the HELP3 model to estimate recharge rates in a small watershed in the eastern United States.…”

Section: Methodsmentioning

confidence: 98%

The impact of climate change on spatially varying groundwater recharge in the grand river watershed (Ontario)

Jyrkama

Sykes

2007

Journal of Hydrology

379

195

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Section: Methodsmentioning

confidence: 98%

The impact of climate change on spatially varying groundwater recharge in the grand river watershed (Ontario)

Jyrkama

Sykes

2007

Journal of Hydrology

379

195

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“…The most widely used package is the Hydrologic Evaluation of Landfill Performance, HELP (Schroeder et al 1994), even though in the last years its use is questioned as a number of limitations have been detected (Berger 2000;Lobo et al 2003;Murthy et al 2009;Oni 2010;São Mateus et al 2012;Shariatmadari et al 2010). The HELP model has been designed to conduct water balance analyses of open, partially closed and fully closed landfills (Schroeder et al 1994), but actually it does not allow to reproduce the progressive development of a landfill, the aging of materials and other important processes that affect leachate generation (e.g., biodegradation reaction, waste compression and consolidation and change in waste physico-mechanical properties).…”

Section: Introductionmentioning

confidence: 99%

A new screening model for leachate production assessment at landfill sites

Pantini

Verginelli

Lombardi

2013

Int. J. Environ. Sci. Technol.

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This paper presents an alternative water balance model for predicting leachate production in landfills, from the operative to the post-closure management. The developed model, based on analytical and empirical equations, provides a quantitative estimation of leachate volumes, using a water balance approach which accounts for the different rates of the incoming water, water losses and water consumption. Aging and compression are also included, allowing to assess the progressive variation of hydraulic and physical properties of deposited wastes. In this work, after a brief description of the model architecture, different applications to hypothetical scenarios and to a real landfill are presented. Namely, in order to highlight how aging and biodegradation can influence the expected leachate production, the results of the developed model are also compared with those provided by the Hydrologic Evaluation of Landfill Performance model which neglects both these processes. The obtained results showed that wastes compression may affect leachate prediction in a large extent during operative stage of a landfill, and neglecting these processes could lead to underestimation up to one order of magnitude. Also biodegradation of waste organic matter may result relevant for leachate volumes assessment, influencing water storage capacity of wastes and leading to a leachate production 2-3 times greater than those obtained neglecting these phenomena. Finally, the application of the developed model to the real landfill shows a quite good agreement with the field data, whereas the Hydrologic Evaluation of Landfill Performance model tends to underestimate the leachate volumes with errors up to 80 %.

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“…The following equation was used to calculate the water entering the surface cell from the environment [Berger, 2000;Yalçin and Demirer, 2002]: ).…”

Section: Hydric Balance and Leachate Production In Slfmentioning

confidence: 99%

Generation and Dispersion Model of Gaseous Emissions from Sanitary Landfills

Jerez

Díaz-Robles

Vergara-Fernández

2013

Electron. J. Energy Envron.

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A mathematical model was developed to quantify the environmental impact produced by the gases emission from sanitary landfills. The stages of gas generation and diffusion were modeled using waste and cover materials placed in a landfill over an isotropic porous medium, while the dispersion stage was modeled for the atmosphere using a Gaussian model. The United States Environmental Protection Agency (USEPA) criteria were adopted for the estimation of greenhouse gases emissions. The MATLAB computer program was used to prepare simulations of a proposed sanitary landfill to serve the municipalities of Temuco and Padre Las Casas in Chile, considering a lifetime of 20 years. The simulated results show that the conditions of confinement have a greater incidence on the rate of gas emission than does the quantity of waste disposed. It was also concluded that the level of environmental impact varies considerably according to the evaluation scenario and the project design.

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Validation of the hydrologic evaluation of landfill performance (HELP) model for simulating the water balance of cover systems

Cited by 37 publications

References 10 publications

The impact of climate change on spatially varying groundwater recharge in the grand river watershed (Ontario)

The impact of climate change on spatially varying groundwater recharge in the grand river watershed (Ontario)

A new screening model for leachate production assessment at landfill sites

Generation and Dispersion Model of Gaseous Emissions from Sanitary Landfills

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