Title
Geophysical monitoring of recirculation of leachate on landfill sites in the Netherlands
Author
Kruiver, P.P.
Westerhoff, R.S.
Noorlandt, R.P.
Hoekstra, N.N.
Woelders, H.
van Vossen, W.J.
TNO Bouw en Ondergrond
Publication year
2009
Abstract
Geophysical investigations were carried out on two modern landfill sites in the Netherlands. The objective of the geo-electrical and EM31 measurements was to reveal the effect of recirculation of leachate on homogenising moisture content in the waste to stimulate the process of attenuation. At Vlagheide, geo-electrical and EM31 measurements were done before and after 5 months of recirculation of leachate. The patterns resistivities are consistent between the geo-electrical lines and with depth. The geo-electrical and EM31 measurements both show an average decrease in resistivity after recirculation. This is possibly linked to a less heterogeneous moisture content caused by the recirculation process. At Kragge, the recirculation system is not installed yet. The geo-electrical profiles show a marked difference between the covered and open waste due to the HDPE foil on the covered waste. From the very high resistivities measured on the covered waste, it can be concluded that there are no significant leaks in the foil at the location of the measured geo-electrical line. On the open waste, the resistivity pattern shows a higher resistivity layer of a few meters thickness on a lower resistivity zone, which probably reflects differences in moisture content.
Subject
Geological Survey Netherlands
Geosciences
Energy / Geological Survey Netherlands
Geophysics
Moisture determination
Geophysical monitoring
High resistivity
Landfill site
Netherlands
Recirculation process
Recirculation systems
Recirculations
Resistivity layers
Leachate treatment
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TNO identifier
493117
Publisher
European Association of Geoscientists and Engineers, EAGE
Source
15th European Meeting of Environmental and Engineering Geophysics of the Near Surface Geoscience Division of EAGE, Near Surface 2009, 7 September 2009 through 9 September 2009, Dublin
Article number
C24
Bibliographical note
Sponsors: et al.; Geological Survey of Ireland (GSI); INFOMAR; Institute of Geologists of Ireland (IGI); Irish Association for Economic Geology; Marine Institute
Document type
conference paper