Chemical destruction process. Chemical reactions and free radicals destroy contaminants on contact.

Allows treatment of a wide range of contaminants.

Treats medium or high concentrations of contaminants.

Rapid treatment periods (weeks to months).

Saturated zone and unsaturated zone.

May require several applications.

In situ chemical oxidation - ISCO

Technological solutions for remediation of contaminated sites.

In situ chemical oxidation (ISCO) involves the direct injection or mixing of reactive chemical oxidants into groundwater and soil with the main goal of rapid and complete destruction of contaminants. ISCO is a versatile treatment technology that is most frequently implemented in source areas characterized by moderate to high concentrations of contaminants in groundwater, absorbed contamination in the soil matrix, and the possible presence of residual contamination in the form of drops (LNAPL or DNAPL).

Successful on-site treatment requires a detailed understanding of the nature and distribution of the contaminant mass, as well as an intensive application approach that will maximize oxidant-contaminant contact and deliver a sufficient amount of oxidant to treat dissolved, sucked in and inert contaminants free phase. Envirotecnics offers different safe and effective oxidizing reagents for the treatment of soils and groundwater including Sodium percarbonate, Sodium permanganate, Hydrogen peroxide, Activated sodium persulfate and combined ISCO reagent (Sodium persulfate and Calcium peroxide). Our ISCO reagents employ unique and powerful catalysts to maximize treatment longevity, ensure efficient oxidation, and promote the safe use of chemicals in the field.

Envirotecnics has highly experienced professionals who work with our clients to develop technically rigorous and cost-effective solutions for ISCO treatment for different contaminants at sites with various conditions. Our free project evaluations generally take into account:

  1. Remediation objectives.
  2. Nature and extent of contamination.
  3. Soil characteristics and hydrogeology of the target treatment area.
  4. Possible combination with other remediation technologies.
  5. Application approaches and methods.
  6. Health and safety aspects associated with the application of oxidants.

Related services

  • Treatability tests on batch water samples using different oxidizing agents and concentrations.
  • Feasibility studies in lysimeters using contaminated soil / water.
  • Determination of the natural oxidant demand (NOD)

Related projects

Open channel flow measurement in a landfill

The project involved the installation of a system to measure the flow of an open channel located in a landfill. The channel carries rainwater and runoff water.It is usually dry, but periodically, when there is heavy rainfall, it will carry a considerable amount of water.

Pump and treat units for reduced space

Pump and treat unit for reduced space designed to remove hydrocarbons, each fitted with fireproof, thermal, and acoustic insulation.

Evaluation of surfactants for HCH mobilisation

Envirotecnics carried out laboratory trials to evaluate the use of surfactants for the mobilisation of hexachlorocyclohexane (HCH) in the non-aqueous phase present in the Sardas landfill (Aragon).

Pumping system design for ISCO

Design and implementation of a system for the pumping and injection of oxidising agents for an ISCO pilot test at the Bailin landfill site.

Are you planning a project with IN SITU CHEMICAL OXIDATION?
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