Flow Characteristics of Landfill Leachate Collection Systems and Liners

Korfiatis, George P.; Demetracopoulos, Alexander C.

doi:10.1061/(asce)0733-9372(1986)112:3(538)

Cited by 12 publications

(7 citation statements)

References 4 publications

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“…The three differential equations describing the nitrogen transformation in a landfill are A. 5q 8ci i;-7 (15) 06) (17) in which k 2 = X 2 m2 c 2 ) , k 3 = Hm3 X 3 77; T Y 3 (k m3 + c 3 )…”

Section: S(6x)mentioning

confidence: 99%

“…The boundary conditions for analysis of a leachate collection system are (17,18), (17) and (21) along with the appropriate boundary conditions constitute a system of coupled algebraic and partial differential equations (PDE) that describe the behavior of a landfill system. Using an explicit finite difference scheme throughout the landfill, the PDE' s are transformed to ordinary differential equations (ODE) .…”

Section: Boundary Conditionsmentioning

confidence: 99%

“…Wong's model was modified for more accurate computation of the leakage rates , and was extended to account for quasi-steady leachate input rates (16). A more detailed description of the hydraulics of a bottom collection system was obtained by performing a liquid balance on a longitudinally differential volume (17). Recently Demetracopoulos (18) The derivation of model equations for the leachate -transport in a landfill is under the following assumptions :…”

Section: Introductionmentioning

confidence: 99%

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Leaching from solid waste landfills part I: Modelling

Bai

1991

Environmental Technology

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A mathematical model haa been developed as a generalized computer program to simulate leaching from solid waste landfills. This model was based on the unsaturated flow equation, the solute transport equation, the water balance equation and incorporating the equations of chemical and microbial processes. Good agreement is obtained with the experimental data reported by Wigh and Brunner (1). This model can be applied to evaluate leachate quantity, predict the strength of various contaminants in leachate, and design and avoid failure of the leachate collection system.

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“…The three differential equations describing the nitrogen transformation in a landfill are A. 5q 8ci i;-7 (15) 06) (17) in which k 2 = X 2 m2 c 2 ) , k 3 = Hm3 X 3 77; T Y 3 (k m3 + c 3 )…”

Section: S(6x)mentioning

confidence: 99%

Section: Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Leaching from solid waste landfills part I: Modelling

Bai

1991

Environmental Technology

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“…A two dimensional, unsteady state moisture flow model ''Flow Investigation for Landfill Leachate (FILL)'' was used to describe the leachate flow (Korfiatis and Demetracopoulos 1986). FILL model used moisture routing; first through the soil cover and then through the under lying compacted solid waste.…”

Section: Introductionmentioning

confidence: 99%

“…FILL model used moisture routing; first through the soil cover and then through the under lying compacted solid waste. The formulation and solution techniques were also used to compute the leachate mound head in the saturated zone of a landfill Korfiatis and Demetracopoulos 1986;Demetracopoulos 1988). Further, the movement of contaminant from the landfill was analysed by a model using the moisture routing procedure (Remson et al 1968;Perrier and Gibson 1980).…”

Section: Introductionmentioning

confidence: 99%

Experimental and analytical model studies on leachate volume computation from solid waste

Sivakumar

2012

Int. J. Environ. Sci. Technol.

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An extensive use of solid-waste landfills for disposal of municipal and industrial wastes have prompted increased attention to groundwater pollution caused by leachate generated in such landfills. The potential for groundwater contamination by leachate has necessitated engineering designs for landfills. The quantity of leachate generated from the solid waste and the movement of water through the solid waste depends on water input and the solid-waste characteristics. This paper dealt with the experimental investigations using the laboratory solidwaste leaching column to estimate the total leachate volume/leachate flow for unsaturated and saturated conditions. The hydraulic properties of the solid waste like initial moisture content, field capacity, permanent wilting point, saturation moisture content, effective void ratio, saturation hydraulic conductivity and saturation suction pressure were determined from the small-scale laboratory experiments, which are the input for analytical model study of leachate flow/total leachate volume for both unsaturated and saturated conditions. The result of analytical model study was compared with the results of experimental investigations. Comparisons of measured and computed total leachate volume/leachate flow using Darcy's law showed reasonable agreement.

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