Impact of axial velocity and transmembrane pressure (TMP) on ARP filter performance

Technical Report · Mon Feb 29 04:00:00 EST 2016

DOI:https://doi.org/10.2172/1240871· OSTI ID:1240871

Poirier, M. ^[1]; Burket, P. ^[1]

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1. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

The Savannah River Site (SRS) is currently treating radioactive liquid waste with the Actinide Removal Process (ARP) and the Modular Caustic Side Solvent Extraction Unit (MCU). Recently, the low filter flux through the ARP of approximately 5 gallons per minute has limited the rate at which radioactive liquid waste can be treated. Salt Batch 6 had a lower processing rate and required frequent filter cleaning. Savannah River Remediation (SRR) has a desire to understand the causes of the low filter flux and to increase ARP/MCU throughput. One potential method for increasing filter flux is to adjust the axial velocity and transmembrane pressure (TMP). SRR requested SRNL to conduct bench-scale filter tests to evaluate the effects of axial velocity and transmembrane pressure on crossflow filter flux. The objective of the testing was to determine whether increasing the axial velocity at the ARP could produce a significant increase in filter flux. The authors conducted the tests by preparing slurries containing 6.6 M sodium Salt Batch 6 supernate and 2.5 g MST/L, processing the slurry through a bench-scale crossflow filter unit at varying axial velocity and TMP, and measuring filter flux as a function of time.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• Sponsoring Organization: DOE
• DOE Contract Number: AC09-08SR22470
• OSTI ID: 1240871
• Report Number(s): SRNL--STI-2016-00006
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
512-S
ARP
AUGMENTATION
BENCH-SCALE EXPERIMENTS
Crossflow
FILTERS
LIQUID WASTES
PERFORMANCE
PRESSURE DEPENDENCE
RADIOACTIVE WASTE PROCESSING
REMEDIAL ACTION
SALTS
SAVANNAH RIVER PLANT
SLURRIES
SODIUM
SOLVENT EXTRACTION
Sintered-Metal Filter
TESTING
TIME DEPENDENCE
VELOCITY