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Article | REF: C5582 V1

Techniques for rehabilitating polluted sites and soils - Summary sheets

Author: Pascal ROUDIER

Publication date: February 10, 2005 | Lire en français

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    26. Slurping

    Another keyword: triple phase® extraction

    Triple-phase extraction (TPE)® or slurping involves simultaneously treating the soil gases, the free-phase pollutant in the capillary fringe and the groundwater. This technique is now widely used.

    • Principle

      ETP® is an in situ process for the simultaneous treatment of soil gases, free-phase pollutants in the capillary fringe and groundwater. The treatment system consists of a drawdown well or extraction needle and a rigid tube or "cane" placed inside the needle. There are two different types of ETP® : unitary network ETP® and separate network ETP® (figure 26 ):

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