IN SITU REMOVAL OF SURFACE-ACTIVE COMPOUNDS FROM WATER

IN SITU REMOVAL OF SURFACE-ACTIVE COMPOUNDS FROM WATER

Method for in situ removal of a surface-active compound, such as per- and polyfluoroalkyl substances (PFAS), from groundwater are described. A trench is prepared that is arranged to capture groundwater flow. A diffuser is placed in the trench. The trench is backfilled with a permeable, inert solid t...

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Hauptverfasser: Schaefer, JR., Charles Edward, Nguyen, Dung Duc
Format: Patent
Sprache:eng
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CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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creator Schaefer, JR., Charles Edward
Nguyen, Dung Duc
description Method for in situ removal of a surface-active compound, such as per- and polyfluoroalkyl substances (PFAS), from groundwater are described. A trench is prepared that is arranged to capture groundwater flow. A diffuser is placed in the trench. The trench is backfilled with a permeable, inert solid to an elevation below ground elevation. A platform that floats on water is placed within the trench. The platform includes a perimeter support structure and one or more perforated crossbeams connected to a vacuum source. A compressed gas is provided to the diffuser within the trench to generate a foam containing the surface-active compound above the groundwater. A vacuum is applied through the one or more perforated crossbeams of the platform to collect the foam containing the surface-active compound.
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subjects CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
title IN SITU REMOVAL OF SURFACE-ACTIVE COMPOUNDS FROM WATER
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