Kemisk/biologisk filter til rensning af vand, forurenet med klorerede opløsningsmidler

Environmentally sound remediation of contaminated groundwater The organic solvents perchloroethylene (PCE) and trichloroethylene (TCE) comprise one of the main soil and groundwater contamination problems in the industrial nations. Many different remediation techniques are used to clean up PCE and TCE contamination, and research is being conducted on the substances? behaviour in order to improve the remediation techniques. One of the most common techniques is the abstraction of contaminated groundwater followed by filtration with an active carbon filter. This solution is not environmentally optimal, however. The present project under the Danish EPA?s Technology Programme for Soil and Groundwater Pollution therefore investigated whether iron powder and/or biological material are suitable alternatives to active carbon filters. The pilot studies show that a combination of green pellets and iron powder can degrade PCE and TCE.