True Blue Technologies, Inc.

Supersaturated Water Injection (SWI)

Supersaturated Water Injection (SWI) is an effective technology for Nonaqueous Phase Liquid (NAPL) recovery. Carbon dioxide (CO2) supersaturated water injected into the subsurface results in the nucleation of CO2 bubbles at and away from the injection point. As the supersaturated liquid flows through the porous medium, gas evolution occurs in situ as the system returns to thermodynamic equilibrium. The nucleating bubbles coalesce, rise and volatilize residual NAPL ganglia.

SWI offers the following benefits:

  • Light NAPL (LNAPL) and Dense NAPL (DNAPL) recovery enhancement system for trapped and immobile NAPL mass
  • Uses CO2 to strip volatile NAPL component for capture in the unsaturated zone
  • Mobilizes liquid NAPL trapped in aquifer matrix for recovery

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