FRAC-IN: In-situ remediation of contamination in low-permeable soils
Europese Commissie - VLAIO
28 February 2018
“Eurostars” research project
FRAC-IN was part of the European “Eurostars” research project in which a protocol was worked out for in-situ remediation of soil contamination presented in low-permeable soils. This was the first time when the Flanders Innovation & Entrepreneurship awarded a Flemish business cooperation that achieved second place out of 293 international participants!
Together with the Belgian (ABO-Group) and the Czech (DEKONTA and NANO IRON) partners a remediation method was worked out. By injection of an innovative suspense in the soil, the permeability of the soil can be increased under high pressure by using Direct Push drilling technology. AGT was responsible for the fine-tuning of the drilling technology and for testing the effectiveness of the technique through field measurements and with the help of numerical models. For this purpose, the finite-element code COMSOL was used to simulate several physical processes together on a small scale.
With the help of shallow geophysical methods the characteristics of the subsurface can be mapped. Depending on which ground characteristics needed to be mapped, several shallow geophysical measurements are available, such as ground penetration radar (GPR), electrical resistance tomography (ERT), seismic refraction, magnetometer and electromagnetic induction (EM).
In this study electrical resistance tomography was used to characterise the subsurface.