Operation and performance of horizontal wells for leachate control in a waste landfill
Operation and performance of horizontal wells for leachate control in a waste landfill
This paper presents data on gas and leachate flow rates and leachate levels obtained during a 600 day pumping trial on three retro-fitted horizontal wells in a domestic waste landfill at Rainham, UK. The changes in gas and leachate flow rate with time and atmospheric pressure, and the interaction between the two flows, are discussed. The spatial variability of the response of the leachate levels within the landfill is explored with reference to the anisotropy and heterogeneity of the permeability of the waste. It is shown that horizontal wells can be an effective means of controlling leachate heads near the base of a landfill, and that leachate levels must be measured using piezometers with a discrete response zone rather than fully screened observation wells if meaningful results are to be obtained. It is argued that the large amounts of gas pumped from the nominally saturated zone of the landfill must have come from the on-going degradation of the waste within the zone of influence of the well.
1040-1047
Beaven, R.P.
5893d749-f03c-4c55-b9c9-e90f00a32b57
Cox, S.E.
0a0a46ee-52eb-4086-82ae-659de8b5c094
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
August 2007
Beaven, R.P.
5893d749-f03c-4c55-b9c9-e90f00a32b57
Cox, S.E.
0a0a46ee-52eb-4086-82ae-659de8b5c094
Powrie, W.
600c3f02-00f8-4486-ae4b-b4fc8ec77c3c
Beaven, R.P., Cox, S.E. and Powrie, W.
(2007)
Operation and performance of horizontal wells for leachate control in a waste landfill.
Journal of Geotechnical and Geoenvironmental Engineering, 133 (8), .
(doi:10.1061/(ASCE)1090-0241(2007)133:8(1040)).
Abstract
This paper presents data on gas and leachate flow rates and leachate levels obtained during a 600 day pumping trial on three retro-fitted horizontal wells in a domestic waste landfill at Rainham, UK. The changes in gas and leachate flow rate with time and atmospheric pressure, and the interaction between the two flows, are discussed. The spatial variability of the response of the leachate levels within the landfill is explored with reference to the anisotropy and heterogeneity of the permeability of the waste. It is shown that horizontal wells can be an effective means of controlling leachate heads near the base of a landfill, and that leachate levels must be measured using piezometers with a discrete response zone rather than fully screened observation wells if meaningful results are to be obtained. It is argued that the large amounts of gas pumped from the nominally saturated zone of the landfill must have come from the on-going degradation of the waste within the zone of influence of the well.
This record has no associated files available for download.
More information
Published date: August 2007
Identifiers
Local EPrints ID: 39513
URI: http://eprints.soton.ac.uk/id/eprint/39513
ISSN: 1090-0241
PURE UUID: 33b39756-f862-40f6-a084-922fd0f1876c
Catalogue record
Date deposited: 28 Jun 2006
Last modified: 16 Mar 2024 02:54
Export record
Altmetrics
Contributors
Author:
S.E. Cox
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
