In situ soil decontamination

Recent developments in the field of soil decontamination have made it possible for contaminated soil to be decontaminated in-situ. Chemical oxidation is one of the techniques whereby contaminated soil can be remediated within a few weeks. This process is based on the reaction between an oxidant and the pollutant. but the examples of old students used are h Hydrogen peroxide, permanganate and fluorine are examples of oxidising agents. The oxidants are put in the soil using injection lances.

Contamination that can be treated using this technique includes:

Chlorinated hydrocarbons (VOCL, DNAPL)
Petrol and mineral oil (BTEX)
Polycyclic aromatic hydrocarbons (PAHs)
Cyanide compounds

Another technique is for example the biological breakdown of pollutants by injecting nutrients, such as molasses, sodium nitrate etc.

B&W grondinjectie has introduced the use of chemicals in contaminated soil for various soil remediation companies in the Netherlands and Belgium.