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Accession Number
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DE2012-1039570
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Title
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Report for Treating Hanford LAW and WTO SW Simulants: Pilot Plant Mineralizing Flowsheet.
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Publication Date
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Feb 2012
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Media Count
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305p
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Personal Author
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N/A
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Abstract
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The US Department of Energy is responsible for managing the disposal of radioactive liquid waste in underground storage tanks at the Hanford site in Washington State. The Hanford waste treatment and immobilization plant (WPT) will separate the waste into a small volume of high level waste (HLW), containing most of the radioactive constituents, and a larger volume of low activity waste (LAW), containing most of the non-radioactive chemical and hazardous constituents. The HLW and LAW will be converted into immobilized waste forms for disposal. Currently there is inadequate LAW vitrification capacity planned at the WTP to complete the mission within the required timeframe. Therefore additional LAW capacity is required. One candidate supplemental treatment technology is the fluidized bed steam reformer process (FBSR). This report describes the demonstration testing of the FBSR process using a mineralizing flowsheet for treating simulated Hanford LAW and secondary waste from the WTP (WTP SW). The FBSR testing project produced leach-resistant solid products and environmentally compliant gaseous effluents. The solid products incorporated normally soluble ions into an alkali alumino-silicate (NaS) mineral matrix. Gaseous emissions were found to be within regulatory limits. Cesium and rhenium were captured in the mineralized products with system removal efficiencies of 99.999% and 99.998 respectively. The durability and leach performance of the FBSR granular solid were superior to the low activity reference material (LMR) glass standards. Normalized product consistency test (PCT) release rates for constituents of concern were approximately 2 orders of magnitude less than that of sodium in the Hanford glass (standard).
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Keywords
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Capacity
Cesium
Flowsheets
Fluidized beds
Gaseous wastes
Glass
Liquid wastes
Performance
Pilot plants
Radioactive waste disposal
Removal
Rhenium
Sodium
Steam
Tanks
Testing
Underground storage
Vitrification
Waste forms
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Source Agency
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Technical Information Center Oak Ridge Tennessee
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NTIS Subject Category
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77G - Radioactive Wastes & Radioactivity
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Corporate Author
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THOR Treatment Technologies, LLC., Denver, CO.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1223
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Contract Number
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DE-AC09-06SR22521
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