Gas flow to a vertical gas extraction well in deformable MSW landfills

Yu, Li; Batlle, F.; Carrera, Jesús; Lloret, A.

doi:10.1016/j.jhazmat.2009.03.045

Cited by 45 publications

(18 citation statements)

References 25 publications

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“…The suc tion pressure reached at the landfill is higher than that at the dump, due to which a higher gas flow rate is obtained. Increasing the suction pressure from its ini tial value results in a linear growth of gas mixture flow rate, the pattern of which coincides with the results from analytic solution of the equations of a similar model presented in [11].…”

Section: Verification Of the Modelsupporting

confidence: 85%

Numerical modeling of landfill gas and heat transport in the deformable MSW landfill body. Part 2. Verification and application of the model

Kutsyi

2015

Therm. Eng.

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The article is devoted to studying the parameters of wells that are used as part of vertical landfill gas collection systems for degassing landfills. To this end, the thermophysical model developed in the first part of this work is considered. The model is constructed using the initial data obtained at real dump and landfill with subsequently comparing the calculation results with the data of experimental measurements. A method for determining the average hydrodynamic properties of wastes is proposed, using which the heterogeneity of wastes can be taken into account. The effect the operating and design parameters of the well have on its per formance is investigated on the basis of these properties. It has been determined that increasing the suction pressure, drilling diameter, and perforation height allows the well production rate to be increased by around 10%. The effect the increase of the well production rate has on the landfill gas collection project's payback period is demonstrated taking typical dump and landfill as an example.

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Section: Verification Of the Modelsupporting

confidence: 85%

Numerical modeling of landfill gas and heat transport in the deformable MSW landfill body. Part 2. Verification and application of the model

Kutsyi

2015

Therm. Eng.

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“…The gas generation rates were about 2.33e‐7 and 1.53e‐6 kg/(m 3 s) for depths of 18–24 and 0–18 m, respectively. The parameters are presented in Table . The simulation geometry and boundary condition are shown in Figure .…”

Section: Simulation Casesmentioning

confidence: 99%

“…Following the work of Nastev [7], Vigneault et al predicted the influence radius of a vertical well under the operation conditions of TOUGH2-LGM [11]. Additionally, the gas flow coupling mathematical model that considers settlement was proposed in the literature to address the long-term distribution of landfill gas [12,13].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of dual permeability of gas flow in municipal solid waste: Extraction well operation

Liu

Xue

et al. 2016

Env Prog and Sustain Energy

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The dual permeability model (DPM) is used to describe the gas flow in landfills under the preferential flow effect. A steady‐state radial DPM was developed in this study to predict gas distribution at extraction well operations. Two typical cases of a short‐term pumping field test from a single extraction well were also studied. The sensitivity of kf/km and mass transfer coefficient in the DPM was simulated. The mechanism of higher deviation between the simulation result and the test could be explained by the gas flux and influence radius, as determined by the single permeability model based on gas pressure distribution in the radial direction. The reliability of the DPM in the prediction of gas flux and influence radius in extraction wells was initially verified. The study provides evidence of the improvement of the design and operation parameters of extraction wells in landfills using the proposed method. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 1381–1386, 2016

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“…The anaerobic fermentation of waste causes the production of polluted products in liquid (leachate) and gaseous (biogas) form, which can persist for over thirty years after closure of a landfill and require appropriate treatment or disposal [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Collection of Thermal Energy Available from a Biogas Plant for Leachate Treatment in an Urban Landfill: A Sicilian Case Study

2012

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Abstract:The landfill of Bellolampo is located in northern Sicily and serves the greater area of Palermo (Sicily). In the recent past, the landfill has been progressively renovated in order to align the waste disposal process with the state-of-the-art technology. During the past years, the site had been equipped with seven biogas engines, fuelled with the biogas produced at the oldest part of the landfill. More recently, another two engines of the same type have been installed for a total of 9 MW electrical power installed at the landfill. The landfill of Bellolampo faces a significant leachate disposal problem. Some 250 m 3 of contaminated leachate are produced daily and transported by ships and trucks to an area about 1000 km away before being treated and disposed. The disposal of this extremely polluting fluid causes significant nuisance in the integrated waste management process and significant disposal expenses (in excess of € 60 per ton of fluid disposed and € 4.5 mln per year). Furthermore, the recent legislation strongly suggests the landfill manager to activate fully integrated systems and 100% landfill auto-sustainability. On the other hand, the above mentioned biogas engines produce a great quantity of unused thermal energy yearly. This study demonstrates that this energy could be effectively and efficiently used to enable the sustainable in-house treatment of the leachate. The treatment is aimed to significantly reduce leachate volume in order to reduce fluid disposal costs. A thorough economical analysis is also performed. The study demonstrates that a medium sized landfill can sustainably and cost-effectively be managed through a fully integrated system thus producing substantial economies.

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Gas flow to a vertical gas extraction well in deformable MSW landfills

Cited by 45 publications

References 25 publications

Numerical modeling of landfill gas and heat transport in the deformable MSW landfill body. Part 2. Verification and application of the model

Numerical modeling of landfill gas and heat transport in the deformable MSW landfill body. Part 2. Verification and application of the model

Evaluation of dual permeability of gas flow in municipal solid waste: Extraction well operation

Collection of Thermal Energy Available from a Biogas Plant for Leachate Treatment in an Urban Landfill: A Sicilian Case Study

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