Remediation Services

Around the world, former industrial sites are being earmarked for new building projects. The legacy of industrial activity, however, such as oil spills, often means that the land requires remediation first.

Legislation is generally becoming stricter. In many countries, construction companies must now treat any components they find. This holds up complex building projects until a rapid remediation solution is installed.

DESOTEC has the answers, supplying contractors with mobile sustainable filtration solutions to treat air emissions or contaminated groundwater associated with soil remediation.

Most unwanted components at brownfield sites are organic, which are easily treated using DESOTEC activated carbon filtration. These components include mineral oils, volatile organic compounds (VOCs), benzene, toluene, ethylbenzene, and xylene (BTEX), adsorbable organic halides (AOX), and persistent organic pollutants (POPs) such as per- and polyfluoroalkyl substances (PFAS).

DESOTEC has a range of filters to handle the various flow rates and concentrations resulting from the various types of soil remediation processes. Where soil is excavated for ex-situ treatment, our filters can be installed in tents to treat emissions released during digging. The filters are a cost-effective way to handle large flow rates and are designed to allow for a low pressure drop, thus saving energy. A different filter model can be installed at the treatment facility itself to handle lower flow rates but far higher concentrations.

Vapor extraction processes can also be carried out on-site, such as for contaminated land at a site still in use. The ground is treated thermally to turn the components into gases, producing very high concentrations that used to be hard to treat. DESOTEC rose to the challenge, developing its AIRCON HC-XL filter especially for this purpose.

Where groundwater requires purification, pump-and-treat techniques are widely used. Groundwater is pumped to the surface, treated, then either injected back into the soil or discharged. Components are installed underground hydraulically to preserve the surrounding land.

DESOTEC provides mobile water filters to treat the extracted polluted groundwater. These filters are able to handle large flow rates and varying concentrations of components. Activated carbon adsorbs the contaminants, allowing for the safe return or disposal of the groundwater.