Modeling microbiological and chemical processes in municipal solid waste bioreactor, part I: Development of a three-phase numerical model BIOKEMOD-3P

Gawande, Nitin; Reinhart, Debra R.; Yeh, Gour Tsyh

doi:10.1016/j.wasman.2009.09.009

Cited by 25 publications

(8 citation statements)

References 26 publications

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“…The pore pressure is expected to increase until the steady-state conditions are achieved; based on design charts for a vertical well developed by Jain et al approximately 26,000 m 3 of leachate need to be added to the well to reach a steady state [16]. This suggests that the pore water pressure will further increase in the surrounding waste with leachate addition as only a small quantity of leachate was added in the vertical well compared to the volume of leachate required to reach the steady state.…”

Section: Resultsmentioning

confidence: 99%

Temporal and Spatial Pore Water Pressure Distribution Surrounding a Vertical Landfill Leachate Recirculation Well

Kadambala

Townsend

Jain³

et al. 2011

IJERPH

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Addition of liquids into landfilled waste can result in an increase in pore water pressure, and this in turn may increase concerns with respect to geotechnical stability of the landfilled waste mass. While the impact of vertical well leachate recirculation on landfill pore water pressures has been mathematically modeled, measurements of these systems in operating landfills have not been reported. Pressure readings from vibrating wire piezometers placed in the waste surrounding a liquids addition well at a full-scale operating landfill in Florida were recorded over a 2-year period. Prior to the addition of liquids, measured pore pressures were found to increase with landfill depth, an indication of gas pressure increase and decreasing waste permeability with depth. When liquid addition commenced, piezometers located closer to either the leachate injection well or the landfill surface responded more rapidly to leachate addition relative to those far from the well and those at deeper locations. After liquid addition stopped, measured pore pressures did not immediately drop, but slowly decreased with time. Despite the large pressures present at the bottom of the liquid addition well, much smaller pressures were measured in the surrounding waste. The spatial variation of the pressures recorded in this study suggests that waste permeability is anisotropic and decreases with depth.

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Section: Resultsmentioning

confidence: 99%

Temporal and Spatial Pore Water Pressure Distribution Surrounding a Vertical Landfill Leachate Recirculation Well

Kadambala

Townsend

Jain³

et al. 2011

IJERPH

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“…However, other more detailed models, which provide a more realistic representation of the decay of organic matter in landfill, are available (e.g., Gawande et al 2010;Vavilin 2010;Zacharof and Butler 2004;White and Beaven 2013).…”

Section: Biotic Consumption and Vapor Lossesmentioning

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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“…x x CODE_BRIGHT [65] x x x x [66] x x x BIOKEMOD-3P [67] x x x [68] x x x [69] x x x [70] x x LAST [71] x x [72] x x x T2LBM [73] x x x [74] x x x [75] x x x FLS [76] x x x BIOLEACH [77] x x x…”

Section: Biogas Production Modelsmentioning

confidence: 99%

Mathematical Modeling of the Biogas Production in MSW Landfills. Impact of the Implementation of Organic Matter and Food Waste Selective Collection Systems

Rodrigo-Ilarri

Rodrigo-Clavero

2020

Atmosphere

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Municipal solid waste (MSW) landfills are one of the main sources of greenhouse gas emissions. Biogas is formed under anaerobic conditions by decomposition of the organic matter present in waste. The estimation of biogas production, which depends fundamentally on the type of waste deposited in the landfill, is essential when designing the gas capture system and the possible generation of energy. BIOLEACH, a mathematical model for the real-time management of MSW landfills, enables the estimation of biogas generation based on the waste mix characteristics and the local meteorological conditions. This work studies the impact of installing selective organic matter collection systems on landfill biogas production. These systems reduce the content of food waste that will eventually be deposited in the landfill. Results obtained using BIOLEACH on a set of scenarios under real climate conditions in a real landfill located in the Region of Murcia (Spain) are shown. Results demonstrate that actual CH4 and CO2 production depends fundamentally on the monthly amount of waste stored in the landfill, its chemical composition and the availability and distribution of water inside the landfill mass.

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Modeling microbiological and chemical processes in municipal solid waste bioreactor, part I: Development of a three-phase numerical model BIOKEMOD-3P

Cited by 25 publications

References 26 publications

Temporal and Spatial Pore Water Pressure Distribution Surrounding a Vertical Landfill Leachate Recirculation Well

Temporal and Spatial Pore Water Pressure Distribution Surrounding a Vertical Landfill Leachate Recirculation Well

A new screening model for leachate production assessment at landfill sites

Mathematical Modeling of the Biogas Production in MSW Landfills. Impact of the Implementation of Organic Matter and Food Waste Selective Collection Systems

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