Chemical remediation generally involves the introduction of chemicals directly to the soil, water or gaseous medium, which either destroy the contaminants or convert them to less harmful products.
Chemicals are additionally used to remove soluble organic and inorganic contaminants from groundwater.
The chemicals are either non-toxic or are converted to harmless products during the remediation process. Technologies to remediate contaminants through chemical methods include:
- Stabilisation and solidification
- ISCO - In-situ chemical oxidation
- Deep well injection
- Granulated activated carbon (GAC) adsorption
- Vapour phase carbon adsorption
- Precipitation, coagulation and flocculation
