A geophysical toolbox for imaging and characterization of a landfill

A geophysical toolbox for imaging and characterization of a landfill

Konstantaki, L.A.
Ghose, R.
Draganov, D.S.
Heimovaara, T.J.

Civil Engineering and Geosciences

Geoscience & Engineering

2015-04-14

Leachate and gas are a product of biochemical reactions occurring inside the landfill. Treatment technologies (e.g., recirculation of leachate) are developed to reduce the production of leachate. Imaging the location of the wet and gas pockets inside the landfill can help improve the treatment technologies. Wet pockets occur inside the landfill due to the presence of high-density areas that act as obstructions to the fluid flow (Figure 1). We propose the utilization of geophysical methods – seismic and electrical – to image and characterize the landfill’s structure. In detail, we use the seismic method to: (a) image the high-density areas (scatterers); (b) obtain a density distribution of the landfill; (c) locate gas and wet pockets. We use the electrical resistivity method to image low-resistivity areas that indicate wet zones. The electrical resistivity method when used alone is prone to artifacts and uncertainties (Jolly et al., 2009). A combination of the two methods has proven to improve the understanding of the landfill’s subsurface (Konstantaki et al., 2015a). In the following, we show results obtained at two different landfill locations in the Netherlands (Wieringermeer and Twence).

http://resolver.tudelft.nl/uuid:641d738f-7b4f-42eb-90a8-7a530d70b17e

HPM6: The 6th International Workshop Hydro-Physico-Mechanics of Landfills, Delft, The Netherlands, 14-17 April 2015

Institutional Repository

conference paper

(c) 2015 The Author(s)