Soil and Groundwater

DEC is specialised in remediating contaminated soil and groundwater. To achieve this, the soil is either completely excavated and processed off-site (ex-situ), or the soil and groundwater are processed using in-situ techniques.

In-situ soil and groundwater remediation

Our solutions are set up and applied in a manner specific to the project and are often offered in combination. We can provide various techniques, such as:

Extracting soil vapour, groundwater, floating layers or sediment layers
Soil vapour extraction and compressed air injection into soil
Chemical oxidation
Bioremediation: aerobic/anaerobic
Reactive permeable barriers
In-situ treatment of groundwater and soil vapour

In site extraction and purification system on the premises of La Floridienne for the decontamination of groundwater contaminated with cyanides and arsenic (Kluizendok, Ghent).

Ex-situ soil treatment

Fixed soil recycling centres

The soil recycling center GRC in Kallo is located in the port of Antwerp and is one of the most innovative soil recycling centres in Europe. This centre has a capacity of 400,000 tonnes per annum. DEC recently opened a similar soil and sludge recycling centre in Brugge.

Four different techniques are employed:

Bioremediation
Physical/chemical soil treatment
Thermal treatment
Immobilisation / stabilisation

Visit the (Dutch) website of GRC NV (unfortenately, a translation is not available)

Mobile soil washing systems

DEC designed, developed and built a number of mobile soil washing and recyling systems that can be employed worldwide for on-site treatment and recycling of contaminated soil. These mobile systems ensure that soil-transport costs are minimised for the client.

Soil washing is an effective technique to remediate contaminated soil, removing a large number of organic and anorganic contaminants.

Selective excavation of contaminated soil and installation of an in situ biosparging system (LU, Herentals).

Ex situ soil remediation on the GRC in Kallo: bioremediation, physico-chemical treatment, immobilisation en thermal desorption (Beveren, Belgium).

We designed a number of mobile soil washing plants, which can be used anywhere in the world.

Would you like to know more?

Download our brochures:

Or view some projects that we have completed using this technique.