Laboratory Tests on Post-Filtration Precipitation in the WTP Pretreatment Process

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Pacific Northwest National Laboratory (PNNL) has been tasked by Bechtel National Inc. (BNI) on the River Protection Project-Hanford Tank Waste Treatment and Immobilization Plant (RPP-WTP) project to perform research and development activities to resolve technical issues identified for the Pretreatment Facility (PTF). The Pretreatment Engineering Platform (PEP) was designed, constructed, and operated as part of a plan to respond to issue M12, "Undemonstrated Leaching Processes," of the External Flowsheet Review Team (EFRT) issue response plan (Barnes et al. 2006). The PEP is a 1/4.5-scale test platform designed to simulate the WTP pretreatment caustic leaching, oxidative leaching, ultrafiltration solids concentration, and ... continued below

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Russell, Renee L.; Peterson, Reid A.; Rinehart, Donald E. & Crum, Jarrod V. November 20, 2009.

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Pacific Northwest National Laboratory (PNNL) has been tasked by Bechtel National Inc. (BNI) on the River Protection Project-Hanford Tank Waste Treatment and Immobilization Plant (RPP-WTP) project to perform research and development activities to resolve technical issues identified for the Pretreatment Facility (PTF). The Pretreatment Engineering Platform (PEP) was designed, constructed, and operated as part of a plan to respond to issue M12, "Undemonstrated Leaching Processes," of the External Flowsheet Review Team (EFRT) issue response plan (Barnes et al. 2006). The PEP is a 1/4.5-scale test platform designed to simulate the WTP pretreatment caustic leaching, oxidative leaching, ultrafiltration solids concentration, and slurry washing processes. The PEP replicates the WTP leaching processes using prototypic equipment and control strategies. A simplified flow diagram of the PEP system is shown in Figure 1.1. Two operating scenarios are currently being evaluated for the ultrafiltration process (UFP) and leaching operations. The first scenario has caustic leaching performed in the UFP-2 ultrafiltration feed vessels (i.e., vessel UFP-VSL-T02A in the PEP; and vessels UFP-VSL-00002A and B in the WTP PTF). The second scenario has caustic leaching conducted in the UFP-1 ultrafiltration feed preparation vessels (i.e., vessels UFP-VSL-T01A and B in the PEP; vessels UFP-VSL-00001A and B in the WTP PTF).

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  • Report No.: PNNL-18876
  • Report No.: WTP-RPT-205 Rev 0
  • Grant Number: AC05-76RL01830
  • DOI: 10.2172/969619 | External Link
  • Office of Scientific & Technical Information Report Number: 969619
  • Archival Resource Key: ark:/67531/metadc928219

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  • November 20, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 9, 2016, 10:17 p.m.

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Russell, Renee L.; Peterson, Reid A.; Rinehart, Donald E. & Crum, Jarrod V. Laboratory Tests on Post-Filtration Precipitation in the WTP Pretreatment Process, report, November 20, 2009; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc928219/: accessed December 11, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.