Effects of Compression and Decomposition on Saturated Hydraulic Conductivity of Municipal Solid Waste in Bioreactor Landfills: Fid-Bau Portal

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Effects of Compression and Decomposition on Saturated Hydraulic Conductivity of Municipal Solid Waste in Bioreactor Landfills

Breitmeyer, Ronald J. / Benson, Craig H. / Edil, Tuncer B.

Laboratory and field-scale tests were conducted to determine the saturated hydraulic conductivity ( $K_{s}$ ) of fresh and degraded municipal solid waste (MSW) at multiple dry unit weights and void ratios ( $e$ ). Field-scale $K_{s}$ was obtained from numerical inversion of data from the Deer Track Bioreactor Experiment (DTBE). Reasonable prediction of field- $K_{s}$ can be achieved from large-scale laboratory tests if laboratory specimens are prepared from MSW with composition and dry unit weight similar to field conditions. In both the laboratory and field, $K_{s}$ of MSW decreased with increasing dry unit weight as the voids become smaller. At constant dry unit weight, more decomposed MSW had higher void ratio and $K_{s}$ . The relationship between $K_{s}$ and void ratio of MSW was consistent for a range of decomposition states, suggesting that void ratio is a better indicator of $K_{s}$ than dry unit weight. An empirical relationship between $K_{s}$ and void ratio was developed that predicted the measured $K_{s}$ of MSW in this study within one order of magnitude. At field scale, however, the effects of decomposition on $K_{s}$ of MSW are more complex because decomposition and settlement occur simultaneously and have opposite effects on void ratio, complicating prediction of $K_{s}$ .

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Effects of Compression and Decomposition on Saturated Hydraulic Conductivity of Municipal Solid Waste in Bioreactor Landfills

Breitmeyer, Ronald J. / Benson, Craig H. / Edil, Tuncer B.

Laboratory and field-scale tests were conducted to determine the saturated hydraulic conductivity ( $K_{s}$ ) of fresh and degraded municipal solid waste (MSW) at multiple dry unit weights and void ratios ( $e$ ). Field-scale $K_{s}$ was obtained from numerical inversion of data from the Deer Track Bioreactor Experiment (DTBE). Reasonable prediction of field- $K_{s}$ can be achieved from large-scale laboratory tests if laboratory specimens are prepared from MSW with composition and dry unit weight similar to field conditions. In both the laboratory and field, $K_{s}$ of MSW decreased with increasing dry unit weight as the voids become smaller. At constant dry unit weight, more decomposed MSW had higher void ratio and $K_{s}$ . The relationship between $K_{s}$ and void ratio of MSW was consistent for a range of decomposition states, suggesting that void ratio is a better indicator of $K_{s}$ than dry unit weight. An empirical relationship between $K_{s}$ and void ratio was developed that predicted the measured $K_{s}$ of MSW in this study within one order of magnitude. At field scale, however, the effects of decomposition on $K_{s}$ of MSW are more complex because decomposition and settlement occur simultaneously and have opposite effects on void ratio, complicating prediction of $K_{s}$ .

Effects of Compression and Decomposition on Saturated Hydraulic Conductivity of Municipal Solid Waste in Bioreactor Landfills

Breitmeyer, Ronald J. / Benson, Craig H. / Edil, Tuncer B.

Laboratory and field-scale tests were conducted to determine the saturated hydraulic conductivity ( $K_{s}$ ) of fresh and degraded municipal solid waste (MSW) at multiple dry unit weights and void ratios ( $e$ ). Field-scale $K_{s}$ was obtained from numerical inversion of data from the Deer Track Bioreactor Experiment (DTBE). Reasonable prediction of field- $K_{s}$ can be achieved from large-scale laboratory tests if laboratory specimens are prepared from MSW with composition and dry unit weight similar to field conditions. In both the laboratory and field, $K_{s}$ of MSW decreased with increasing dry unit weight as the voids become smaller. At constant dry unit weight, more decomposed MSW had higher void ratio and $K_{s}$ . The relationship between $K_{s}$ and void ratio of MSW was consistent for a range of decomposition states, suggesting that void ratio is a better indicator of $K_{s}$ than dry unit weight. An empirical relationship between $K_{s}$ and void ratio was developed that predicted the measured $K_{s}$ of MSW in this study within one order of magnitude. At field scale, however, the effects of decomposition on $K_{s}$ of MSW are more complex because decomposition and settlement occur simultaneously and have opposite effects on void ratio, complicating prediction of $K_{s}$ .

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Title:

Effects of Compression and Decomposition on Saturated Hydraulic Conductivity of Municipal Solid Waste in Bioreactor Landfills

Contributors:

Breitmeyer, Ronald J. (author) / Benson, Craig H. (author) / Edil, Tuncer B. (author)

Published in:

Journal of Geotechnical and Geoenvironmental Engineering ; 145

Publication date:

2019-02-15

ISSN:

1090-0241 , 1943-5606

DOI:

https://doi.org/10.1061/(ASCE)GT.1943-5606.0002026

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

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