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Technology Programme for Soil and Groundwater
Contamination 2000
3. Status for the programme
3.1 Introduction
3.2 Overview of field projects initiated
3.3 Funding
3.1 Introduction
During the past three years, the Technology Programme has primarily concentrated on
remediation technologies for chlorinated solvents and oil and petrol contamination. The
programme has brought us forward to several new technologies directed towards chlorinated
solvents, including thermically assisted remediation and reactive permeable barriers. The
programme has also yielded a low-cost method for remediation of groundwater which has been
contaminated by chromium(VI).
A more detailed assessment of air sparging, modified stripping, geo-oxidation and
fracturing will be available shortly. All of these methods are in the process of being
tested which will be concluded within the next year.
A series of phytoremediation projects have been initiated. At present, the conclusion
is that it is not possible to remediate inorganic combined contamination by means of
plants. A number of phytoremediation projects to combat oil and PAH contamination have
been established. The results of these will not be available until three to four years
from now.
A product has been tested which was expected to be able to accelerate degradation of
oil contamination. Tests demonstrated that the product had no discernible effect.
During the activity period so far, a good overview has emerged of potential remediation
techniques to combat e.g. heavy-metal contamination and MTBE contamination of groundwater.
Specific techniques such as vacuum-vapour extraction, thermically assisted remediation and
natural attenuation have been subjected to more detailed description and assessment.
Despite several attempts, suitable methods for combined contamination have not yet been
found.
3.2 Overview of field projects initiated
Below is a short outline of the methods utilised in field projects initiated in the
various areas of special interest. Appendix A features a list of all projects (field
projects and desk studies) initiated during the entire period (from 1996 to 1999).
| Method: |
Area of special interest: |
 | Air sparging |
|
Chlorinated solvents, oil/petrol |
| Soil-vapour extraction |
|
Chlorinated solvents |
| Modified stripping method |
|
Chlorinated solvents |
| Reactive permeable barrier |
|
Chlorinated solvents
and chromium(VI) |
| Vapour stripping |
|
Chlorinated solvents |
| Vapour stripping |
|
Chlorinated solvents |
| Natural attenuation of chlorinated solvents |
|
Chlorinated solvents |
| Natural attenuation of oil/petrol components |
|
Petrol |
| Geo-oxidation |
|
Petrol |
| Degradation accelerator for oil degradation |
|
Oil |
| ORC (Oxygen Release Compound) |
|
Petrol |
| Phyto remediation |
|
Oil, PAH and heavy metal |
| Elektrodialytic remediation |
|
Chromium, copper and arsene |
| Reduction of contamination from chromium(VI) to chromium(III), |
|
Chromium |
| Fracturing |
|
Chlorinated solvents |
| Passive vapour extraction |
|
Chlorinated solvents |
| Soil leaching |
|
Inorganic contamination
and combined contamination |
| Accelerated/forced leaching |
|
Tar components. |
The results of these tests will be published on a regular basis within the next few
years.
3.3 Funding
Since 1996, the annual funds allocated within the national budget have amounted to:
1996: DKK 10.0 million
1997: DKK 15.0 million
1998: DKK 19.4 million
1999: DKK 16.0 million
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