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Afprøvede teknologier under Miljøstyrelsens Teknologiprogram for jord- og grundvandsforurening

Summary and conclusions

Since 1996 the Danish Environmental Protection Agency has, under the program for technology development of soil and groundwater contamination, supported the development of technologies within the fields of decontamination and remediation.

The yearly grant for the program is approx. DKK 15 mill and the money is spent primarily on special investigations, monitoring or documentation activities. Typically the projects are co-financed privately or by counties.

The activities under the technology program aim at procurement of supplementary information and at documentation of techniques for decontamination and remediation, in order to evaluate the technical and financial applicability of these technologies in Denmark. The purpose is to make it possible, after thorough site characterizations, to predict the level of remediation, which can be achieved with the different techniques. Furthermore, it is intended, that the implementation in Denmark of techniques used internationally is made easier, when assumption regarding type of contamination, geology and dimensioning etc. have been described via testing under the technology program.

Support has been granted, and still is, for documentation, development and testing of a wide range of techniques for remediation monitoring and measuring. However, it is very important to keep in mind that the techniques tested under the technology program only constitute a small section of all existing techniques and that a lot of well-documented methods is not mentioned in this report.

The tested techniques have been divided into these main groups: "Techniques for source remediation", "Techniques for plume control (dissolved and vapor phase)" and "Characterization techniques/measuring techniques". The techniques in these main groups are described in chapter 2, 3 and 4 of the report. Furthermore, an outline plan with key data for all tested techniques is enclosed in appendix 1.

With the outline plan in appendix 1 as a starting point, the present report is intended to be used as a source of reference.

With the activities carried out under the technology program, our knowledge about a large number of innovative techniques for measuring, characterization and remediation of contaminated soil and groundwater has been expanded substantially. Furthermore, an important level of experience has been established for a series of techniques regarding design, implementation, operation and monitoring.

Thus, with help from the technology program, a range of promising techniques for contaminated soil and groundwater has over the latest years been introduced in Denmark. Also, some of the tested techniques have been found less suitable or unsuitable for the conditions in Denmark.

The full benefit of the technology program will probably not become apparent until 5-10 years after the start of the program and will require a continuous evaluation of new techniques and improvement of existing techniques.