Column tests (soil washing) for the evaluation of products for the treatment of soil contaminated with hydrocarbons or metals

Based on the properties of some products (e.g., surfactants or chelators) commercial products were tested in the laboratory (column tests) for their effectiveness and efficiency in washing soils contaminated with aliphatic and aromatic hydrocarbons or metals.

PROBLEM

Soils contaminated with hydrocarbons or metals

Soils (surface and deep) hailing from two industrial plants were found to be non-compliant for parameters C less than 12 and BTEX (in the first site) and metals (Arsenic, Zinc, Cadmium) in the second site.

SOLUTION

Soil washing

For the two sites under study, soil-washing technology was chosen for the remediation of soils contaminated with hydrocarbons or metals. Among many methods of soil remediation, the soil-washing technique is widely accepted and often used. Laboratory-scale feasibility studies to analyze the performance of different types of products are widely recommended before field testing.

Test in Colonna

OBJECTIVES ACHIEVED

Determination of best removal performance of products used for soil-washing (surfactants for hydrocarbons and chelators for metals)

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Consultancy in the planning of rehabilitation interventions

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Microbiological and molecular
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Laboratory and field scale feasibility tests

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