Minimum Additive Waste Stabilization (MAWS), Phase I: Soil washing final report

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As a result of the U.S. Department of Energy`s environmental restoration and technology development activities, GTS Duratek, Inc., and its subcontractors have demonstrated an integrated thermal waste treatment system at Fernald, OH, as part the Minimum Additive Waste Stabilization (MAWS) Program. Specifically, MAWS integrates soil washing, vitrification of mixed waste streams, and ion exchange to recycle and remediate process water to achieve, through a synergistic effect, a reduction in waste volume, increased waste loading, and production of a durable, leach-resistant, stable waste form suitable for disposal. This report summarizes the results of the demonstration/testing of the soil washing component of ... continued below

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53 p.

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Creator: Unknown. August 1, 1995.

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Description

As a result of the U.S. Department of Energy`s environmental restoration and technology development activities, GTS Duratek, Inc., and its subcontractors have demonstrated an integrated thermal waste treatment system at Fernald, OH, as part the Minimum Additive Waste Stabilization (MAWS) Program. Specifically, MAWS integrates soil washing, vitrification of mixed waste streams, and ion exchange to recycle and remediate process water to achieve, through a synergistic effect, a reduction in waste volume, increased waste loading, and production of a durable, leach-resistant, stable waste form suitable for disposal. This report summarizes the results of the demonstration/testing of the soil washing component of the MAWS system installed at Fernald (Plant 9). The soil washing system was designed to (1) process contaminated soil at a rate of 0.25 cubic yards per hour; (2) reduce overall waste volume and provide consistent-quality silica sand and contaminant concentrates as raw material for vitrification; and (3) release clean soil with uranium levels below 35 pCi/g. Volume reductions expected ranged from 50-80 percent; the actual volume reduction achieved during the demonstration reached 66.5 percent. The activity level of clean soil was reduced to as low as 6 pCi/g from an initial average soil activity level of 17.6 pCi/g (the highest initial level of soil provided for testing was 41 pCi/g). Although the throughput of the soil washing system was inconsistent throughout the testing period, the system was online for sufficient periods to conclude that a rate equivalent to 0.25 cubic yards per hour was achieved.

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53 p.

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INIS; OSTI as DE96012963

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  • Other Information: PBD: Aug 1995

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  • Other: DE96012963
  • Report No.: ANL--95/46
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/258179 | External Link
  • Office of Scientific & Technical Information Report Number: 258179
  • Archival Resource Key: ark:/67531/metadc669291

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  • August 1, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 16, 2015, 12:56 p.m.

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Minimum Additive Waste Stabilization (MAWS), Phase I: Soil washing final report, report, August 1, 1995; Illinois. (digital.library.unt.edu/ark:/67531/metadc669291/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.