DHI works with the development and application of a number of different technologies for the remediation of soil and groundwater, both in research and development of specialised parts of overall remediation technologies (e.g. microbial degradation) and in the development of new technologies. DHI also works with the evaluation of the most effective methods of remediating different pollution compositions and with methods for measuring and controlling the effectiveness of remediation technologies both in the laboratory and in the field.

DHI has been involved in the development of a method based on electrochemistry for the treatment of groundwater contaminated with organic components such as PCE – a solvent commonly used in dry cleaning.
Another development has been related to the use of trees for the clean-up of soil and groundwater contaminated with oil and tar components and the evaluation of different shrubs for the clean-up of a number of metals.

As a supplementary tool, models have been developed and used whereby different remediation methods can be compared with regard to their local and global impact on the environment and their overall use of resources. Similar methodology has also been used for the evaluation of in-situ disposal of contaminated sediments at sea.