Oxidation of the contaminant by the addition of an oxidant to the soil. Different oxidizing agents can be used, such as Fenton’s, permanganate or ozone, which are injected into the soil through filters. The most suitable type of oxidant is determined by the contaminant and soil properties.
In situ chemical Oxidation (ISCO)
Depending on the chosen oxidant, ISCO can be used for volatile chlorinated hydrocarbons (CVOC), volatile aromatics (BTEX), PAHs and mineral oil in the saturated zone of the soil. The soil should be moderate to well permeable and containing a low organic matter content. ISCO is generally applied to both the source and the plume and can be combined with biological degradation. In the latter situation, ISCO is applied to the source and enhanced biological degradation to the plume.
The duration of ISCO depends on the type and extent of contamination and can take several months to years. This technique causes low to moderate site disturbances.
Related cases and HIP-pilots
Related cases: Bilthoven Rembrandtlaan: CVOC, BTEX en mineral oil**, Bloemendaal; CVOC’s, Mineral Oil, BTEX,PAH’s, naphtalene: ISCO, Den Bosch (de Kruithoorn): CVOC*, Doetinchem (Saronix): CVOC, mineral oil and BTEX***, ISCO and bioremediation of THF (Dordrecht)*, ISCO Defensie-eiland Woerden, remediation CVOC, mineral oil and BTEX***, ISCO of pentachlorophenol contamination (Horst)***, Lochem: mineral oil,BTEX,PAH,naphthalene,creosote ***, Military petrol station: ISCO for mineral oil and BTEX*, Oostburg: ISCO; Thiocyanate, Terneuzen ‘De Zon’: CVOC; ISCO, Utrecht Baanstraat; CVOC**, Zwolle (Dellen Wuyts): CVOC *
Related HIP-pilots: HIP-pilot Optimizing ISCO for CVOC