bioremediation of contaminated soil

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Bioremediation of contaminated soil. Root causes of oil spillages and site contamination. Hose failures on mining machines Oil spillages in and around the workshops Poor maintenance on equipment Not adhering to environmental policies Vehicle accidents. - PowerPoint PPT Presentation


  • Bioremediation of contaminated soil

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    Root causes of oil spillages and site contamination

    Hose failures on mining machinesOil spillages in and around the workshopsPoor maintenance on equipmentNot adhering to environmental policiesVehicle accidents

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    Impact of oil spills on the environment

    Affecting plants and soil organismsAffecting human and animal digestive systemsSafety hazard that can cause slippingDestruction of eco systemsPollution of groundwater we use for drinking

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    Bioremediation processBioremediation can be defined as any process that makes use of micro-organisms, fungi, green plants or their enzymes to return the natural environment altered by contaminants to its original condition. Bioremediation may be employed to attack specific soil contaminants, such as degradation of chlorinated hydrocarbons by bacteria.

    Products are scientifically formulated to consume and digest contaminants as a result of oil spills on soil, gravel or hard surfaces.

    The bioremediation process enhances microbes that occur naturally in soils and digests the hydrocarbon based pollutants in the contaminated area

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    Bioremediation site layout80m10m60m

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    Trench layout

    Trenches are 70m long x 3m wide x m deep (12 in total)This will enable a trench to handle 105 m of contaminated soil.The bioremediation site can then handle a total of 1260 m of contaminated soil.

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    Filling of trenches

    Contaminated soil is then dumped into the trenches

    Products are then added to the contaminated soil

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    Day 1-10Medicals and induction for the team membersDemarcation of the bioremediation site and installation of perimeters for safety e.g. barricade fencing Preparation of the bioremediation trenches for the contaminated soil. These twelve trenches will be 3m wide, m deep and 70m long. This requires an area of 4800mThe trenches will accommodate 1260 m of contaminated soilProject breakdown

    Day 10 to 20Excavation of contaminated soil and removal to the bioremediation trenches for treatment. The depth of soil to be excavated will depend on the depth of the contamination, but is estimated to be between m and 1 m.The team members level and mix the contaminated soil with Organic soil-fix powder and liquidDuring this process the product will be distributed evenly to ensure the fast acting of microbes

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    Day 20 to 30Continuous mixing of treated soil to prevent any oil-sludge build up at the bottom of the trenchesProduct is added on a frequent basis to ensure that all hydrocarbons are treated Monitoring of the bioremediation site and watering three times every week

    Project breakdownDay 30 to 90 Weekly watering of trenchesAnalysing of lab tests to ensure that product application is consistentBioremediation process of contaminated soil should be visible after six to eight weeks Approval of remediated batches for release into environment. This can be used as topsoil covering

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    Results of bioremediationBeforeAfter

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    Benefits of remediation

    The immediate treatment of contaminated soil No costly removal of hazardous waste from siteA continues project for the mining companyAn active project to living green and cleanRemediated soil can be re-introduced into the environmentJob creation for the community



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