In-Situ Technieken / Arcadis Nederland BV

In-Situ Technieken / Arcadis Nederland BV

10 products found


  • Remediation Techniques

  • ISCO - In-situ Chemical Oxidation Big Amounts

    ISCO - In-situ Chemical Oxidation Big Amounts

    With this technology of in-situ chemical oxidation (ISCO) big amounts of contaminants can be treated in a short time period. Due to this ISCO is mainly applied in contamination source zones. Organic compounds, such as chlorinated solvents, BTEX, polychlorinated biphenyl, or petroleum compounds as well as other (exotic) compounds can be treated.

  • BISCO - Concept Combines

    BISCO - Concept Combines

    Our BISCO concept combines the advantages of in-situ chemical oxidation (ISCO) and stimulated aerobic and/or anaerobic biological degradation (e.g. IRZ) raising their total efficiency. Different combinations are applicable. The animation shows one possible sequence. The pretreatment of the contamination by ISCO mineralizes the main part of the contamination and makes the residual contamination more bioavailable. Subsequently the...

  • IRZ - Supplements

    IRZ - Supplements

    Supplements (electron acceptors and nutrients) are injected into the contaminated groundwater using an array of injection wells. Advection and dispersion in the aquifer enhanced spreading of the supplements building reactive zones with enhanced biodegradation activity of indigenous microorganisms (in situ reactive zone, IRZ®). The technology is applicable for the treatment of all aerobic or anaerobic degradable organic as...

  • ISMP - Supplements

    ISMP - Supplements

    The name ISMP (in-situ metal precipitation) is derived from the formation of insoluble metal precipitates which attach to the soil matrix and lead to decreasing solubility and mobility of the (soluble) heavy metals.

  • Venting - Contaminated Soil Vapour

    Venting - Contaminated Soil Vapour

    Venting means the injection of air. The technology uses the ability of indigenous soil bacteria to degrade contaminants. Contaminated soil vapour is extracted via wells and the extracted contaminated air is then cleaned. Ambient air replaces the extracted soil vapour and delivers oxygen activating bacterial biodegradation activity. Benefits: Low investment and maintenance cost, a high efficient technology. The technology is applicable for...

  • Sparging


    Sparging signifies the injection of air into the groundwater of the aquifer. The air migrates in fine fissures to the vadose zone. The air injection leads to a stripping of contaminants into the vadose zone and boosts aerobic biodegradation in the groundwater. Contaminated vapour is extracted and treated. Benefit is low energy consumption during operating. The technology is applicable for monoaromatic hydrocarbons, petroleum hydrocarbons and...

  • Extraction


    Dual phase or multiple phase extraction (DPE, MPE) is also referred to as Vacuum Enhanced Recovery, VER. A suction tube with an opening located just below a free product phase slurps products phases, soil vapour and some groundwater. The three different media are separated above ground and each medium is treated individually. Microbial degradation of contaminants is intensified in the unsaturated zone (Bioventing). The technology is...

  • In-situ immobilization

    In-situ immobilization

    The immobilization process involves the mixing of polluted soil with substances that causes the soil to harden (Solidification) which prevents contaminants from spreading into the surrounding environment. Additionally substances that changes contaminants into less harmful and less mobile chemicals (Stabilization) can be used. Often both techniques will be applied in combination. The soil can be mixed in place with the cleanup materials or...

  • Natural Attenuation

    Natural Attenuation

    Natural Attenuation makes use of the natural degradation capability of subsoil areas. Depending on pollutants as well as groundwater and soil characteristics, concentration and spreading of the contaminants tend to decrease over time. Intense investigation and monitoring provided, these processes can be used for site remediation. Natural attenuation is particularly suitable for aerobic and anaerobic degradable pollutants.

  • Electrokinetics


    The electro-kinetic technologies are based on electrolyses. Electrical power is supplied between electrodes in the soil. Contaminants are mobilized in the soil water and transported to the electrodes, where they can be extracted. Another approach is the spreading of nutrients to stimulate biological activity. Electrokinetic technologies are adequate when soil characteristics impede other remediation methods due to low soil permeability.