Remediation techniques
For the remediation of contaminated sites, through elimination or inertisation of substances present in the soil or in aquifers, EDF Fenice adopts specific technologies – usually divided into chemical, physical, thermal and biological – according to the characteristics of the site and type of pollution.
| TYPE OF TECHNOLOGY | DESIGNATION | AREAS OF APPLICATION | NOTES |
|---|---|---|---|
| Chemical-physical | SOIL WASHING | Soil contaminated by HYDROCARBONS, PESTICIDES and HEAVY METALS | Ex Situ |
| Chemical-physical | SOLVENT EXTRACTION | Contamination by ORGANIC, ORGANOCHLORINE POLLUTANTS, HYDROCARBONS and PESTICIDES | Ex Situ |
| Physical-chemical | SOIL VAPOR EXTRACTION (SVE) | Pollution with the presence of volatile polluting fractions, halogenated and non halogenated VOCs | In Situ |
| Physical-chemical-biological | AIR SPARGING | Pollution in highly permeable, homogenous soil and non-bordering strata, contaminated by halogenated and non-halogenated VOCs and by hydrocarbons | In Situ |
| Physical-biological-chemical | DUAL PHASE EXTRACTION | Pollution caused by halogenated and non-halogenated VOCs and by hydrocarbons present in clayey sand, silt or deep clays | In Situ |
| Thermal | THERMAL DESORPTION | Pollution of soil contaminated by non-halogenated VOCs, polycyclic aromatic SVOCs, polychlorobiphenyls, pesticides and volatile metals | Ex Situ |
| Physical | SOLIDIFICATION/STABILISATION | Non-organic pollution or on the results of soilwashing or bioremediation treatments | Ex Situ |
| Thermal | INCINERATION | Suitable procedure for the disposal of chlorinated hydrocarbons, PCB and dioxins | Off Site |
| Biological | BIOINVENTING | Non-saturated soils contaminated by hydrocarbons | In Situ |
| Biological | BIOSPARGING | Non-saturated soils contaminated by hydrocarbons below the substrate level | In Situ |
| Biological | BIOSLURRY | Pollution of sites by biodegradable contaminants | Ex Situ |
| Biological | LANDFARMING | Pollution of sites by non-volatile biodegradable substances | On Site |
| Biological | BIOPILE | Pollution of sites by non-volatile biodegradable substances | Ex Situ |
| Biological | MICROBIOLOGICAL BARRIERS | Pollution of substrata by non-volatile biodegradable | In Situ |
Drawing on the resources of the Environmental Services Centre and its own facilities, EDF Fenice is able to coordinate and develop reclamation projects of large contaminated sites, adopting procedures with low environmental impact on soil, air, water in order to safeguard the population closest to the polluted areas.