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Using Supercritical Water Oxidation to Treat Hydrolysate from VX Neutralization (1998) / Chapter Skim
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2 Process Description and Scientific Principles
Pages 11-14

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From page 11...
... However, in contrast to the thermal decontamination process used to decontam~nate the drained containers at incineration sites, the Newport TCC process involves cutting the drained containers into two sections and using steam and hot water sprays to rinse and decontaminate the metal surfaces. The liquid collected from the decontamination process, which contains small amounts of VX as well as some agent hydrolysis products, will be collected and treated by the agent neutralization process.
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From page 12...
... A large portion of the water distilled from the SCWO effluent is recycled back to the TCC and SCWO units, which reduces the amount of fresh water needed for process operations. In the case of VX, the amount of water produced by oxidation is generally greater than the amount required to satisfy process needs; consequently, some water will be discharged to the Newport Chemical Depot sewage treatment facility or another acceptable water treatment facility.
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From page 13...
... has been demonstrated to react only slowly in bench and pilot test studies of VX hydrolysate, suggesting slow cleavage of the carbon-phosphorus bond (Gloyna and Li, 1997~. The complete oxidation of even simple organic compounds requires a large number of elementary reactions.
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From page 14...
... The phase behavior of concentrated systems (even systems with just a few percent solute like VX hydrolysate) can be very complex and is probably multiphase because the critical point of water depends strongly on the concentration of solutes (e.g., gases, organic compounds, and salts)
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Key Terms

  • supercritical water
  • phase behavior
  • feed stream
  • organic wastes
  • reaction mechanisms

  • heating value
  • detection limits
  • scwo process
  • decontamination process
  • critical temperature

  • simple organic
  • destruction efficiencies
  • block diagram
  • residence times
  • reaction times

  • supplemental fuel
  • drained containers
  • dielectric constant
  • hot water
  • complete oxidation

  • water oxidation
  • neutralization process
  • alkaline hydrolysate
  • treatment facility
  • concentrations below

  • alter reaction
  • below detection
  • collect residual
  • pure water
  • resulting effluent


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