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Title: Near-Tank Treatment of Hanford Tank Waste: Pilot-Scale Testing - 12107

Abstract

In order to reduce the number of high level waste canisters that will have to be produced by the Hanford Tank Waste Treatment and Immobilization Plant, supplemental waste treatment technologies are being investigated. One such technology is the Near-Tank Treatment System, which uses continuous sludge leaching, filtration, and ion exchange to process the waste in a simple, compact system. The Near Tank Treatment System is ideally suited for handling Hanford tanks with large amounts of boehmite, a difficult aluminum phase to dissolve. A pilot-scale Near Tank Treatment System was constructed and tested with a boehmite and iron oxyhydroxide waste simulant to evaluate the robustness and effectiveness of the system. The data from the pilot-scale tests were also used to assess scale-up from previously performed bench-scale tests. It should be noted that any work involving the use of simulated HLW has inherent limitations. For this work, every attempt was made to ensure that the simulant mimicked the actual waste performance as closely as possible. However, there are always limitations in the ability to The NTTS Demonstration Test established that all the subsystems could be operated concurrently to process the waste simulant. The NTTS had a stable performance during the Demonstration Testmore » that required very little external manipulation once a steady state was achieved. The CSL demonstrated effectively 90% dissolution of the hard to leach boehmite phase. The cross flow filtration system was able to deliver decontaminated salt solution to the NTCR system. The NTCR system exceeded the design basis by providing effluent below the detection limit beyond the design basis required time. The NTTS system was successfully demonstrated and has shown that leaching and decontamination of the subsequent permeate can be readily achieved using relatively small footprint equipment in an at tank application. (authors)« less

Authors:
; ; ;  [1]; ;  [2]
  1. Battelle-Pacific Northwest Division Richland, Washington 99352 (United States)
  2. Parsons Infrastructure and Technology Group, Pasco, Washington 99301 (United States)
Publication Date:
Research Org.:
WM Symposia, 1628 E. Southern Avenue, Suite 9-332, Tempe, AZ 85282 (United States)
OSTI Identifier:
22293426
Report Number(s):
INIS-US-14-WM-12107
TRN: US14V1079114950
Resource Type:
Conference
Resource Relation:
Conference: WM2012: Waste Management 2012 conference on improving the future in waste management, Phoenix, AZ (United States), 26 Feb - 1 Mar 2012; Other Information: Country of input: France; 15 refs.
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ALUMINIUM; DECONTAMINATION; HIGH-LEVEL RADIOACTIVE WASTES; SENSITIVITY; SIMULATION; TESTING; WASTE PROCESSING

Citation Formats

Schonewill, P.P., Edwards, M.K., Shimskey, R.W., Peterson, R.A., Smith, C., and Tranbarger, R. Near-Tank Treatment of Hanford Tank Waste: Pilot-Scale Testing - 12107. United States: N. p., 2012. Web.
Schonewill, P.P., Edwards, M.K., Shimskey, R.W., Peterson, R.A., Smith, C., & Tranbarger, R. Near-Tank Treatment of Hanford Tank Waste: Pilot-Scale Testing - 12107. United States.
Schonewill, P.P., Edwards, M.K., Shimskey, R.W., Peterson, R.A., Smith, C., and Tranbarger, R. Sun . "Near-Tank Treatment of Hanford Tank Waste: Pilot-Scale Testing - 12107". United States.
@article{osti_22293426,
title = {Near-Tank Treatment of Hanford Tank Waste: Pilot-Scale Testing - 12107},
author = {Schonewill, P.P. and Edwards, M.K. and Shimskey, R.W. and Peterson, R.A. and Smith, C. and Tranbarger, R.},
abstractNote = {In order to reduce the number of high level waste canisters that will have to be produced by the Hanford Tank Waste Treatment and Immobilization Plant, supplemental waste treatment technologies are being investigated. One such technology is the Near-Tank Treatment System, which uses continuous sludge leaching, filtration, and ion exchange to process the waste in a simple, compact system. The Near Tank Treatment System is ideally suited for handling Hanford tanks with large amounts of boehmite, a difficult aluminum phase to dissolve. A pilot-scale Near Tank Treatment System was constructed and tested with a boehmite and iron oxyhydroxide waste simulant to evaluate the robustness and effectiveness of the system. The data from the pilot-scale tests were also used to assess scale-up from previously performed bench-scale tests. It should be noted that any work involving the use of simulated HLW has inherent limitations. For this work, every attempt was made to ensure that the simulant mimicked the actual waste performance as closely as possible. However, there are always limitations in the ability to The NTTS Demonstration Test established that all the subsystems could be operated concurrently to process the waste simulant. The NTTS had a stable performance during the Demonstration Test that required very little external manipulation once a steady state was achieved. The CSL demonstrated effectively 90% dissolution of the hard to leach boehmite phase. The cross flow filtration system was able to deliver decontaminated salt solution to the NTCR system. The NTCR system exceeded the design basis by providing effluent below the detection limit beyond the design basis required time. The NTTS system was successfully demonstrated and has shown that leaching and decontamination of the subsequent permeate can be readily achieved using relatively small footprint equipment in an at tank application. (authors)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {7}
}

Conference:
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