Stimulation technology is currently under development for the remediation of contaminated fractured rocks at shallow depths. The primary goal of the proposed project is to combine integrated methods of site characterisation, determination of transport properties of fractured porous media, and numerical simulation of contaminant fate in fractured reservoirs, with on site stimulation technologies for the implementation of in situ remediation on contaminated and low permeability fractured soils. To this goal:
- An improved geotechnical and hydrogeological characterization of the fractured site will be carried out,
- Different multi-fracturing stimulation scenarios will be installed and tested on three areas (cells) of a large LNAPL contaminated site at the former airport at Kluczewo, NW Poland,
- Viable remediation technologies will be selected and installed on the three stimulated areas,
- An existing numerical simulator of the contaminant transport in fractured media (SIMUSCOPP) will be updated,
- Site monitoring with the use of advanced techniques of chemical and microbiological characterisation of the soil will be implemented, which will allow us to evaluate the bio-stimulation as a treatment technology, map the spatial / temporal distribution of NAPL compound concentrations over the site, calibrate the numerical simulator, and evaluate the efficiency of the stimulation / remediation strategy on a short-term basis, and
- A cost benefit analysis will be carried out to assess the feasibility of the methodology.
- Guidelines for the in-situ and on-site remediation of fractured and heavily NAPL-contaminated large sites will be stipulated.
- Transfer of know-how concerning the stimulation / remediation of fractured soils of low permeability to European SMEs, and particularly to SMEs of new EC-members / former CEE countries (Poland) will be assured.
The innovation of this project is to test and present an improved in-situ, on-site and cost effective remediation solution for contaminated areas dominated by low-permeability fractured formations (e.g., clayey till).