(128b) Scaling Solid Resuspension and Sorption for the Small Column Ion Exchange (SCIX) Processing Tank

The Small Column Ion Exchange (SCIX) process is being developed to remove cesium, strontium, and actinides from Savannah River Site (SRS) Liquid Waste using an existing 1.3 million gallon waste tank to house the process.  Savannah River National Laboratory (SRNL) conducted pilot-scale mixing tests to determine the pump requirements for suspending and resuspending Monosodium Titanate (MST), Crystalline Silicotitanate (CST), and simulated sludge.  In addition, SRNL conducted pilot-scale tests to determine the mixing requirements for the strontium and actinide sorption.  The pilot-scale tank is a 1/10.85 linear scale model of Tank 41H.  The tank diameter, tank liquid level, pump nozzle diameter, pump elevation, and cooling coil diameter are all 1/10.85 of their dimensions in the full-scale tank.  The pump locations correspond to the proposed locations in the full-scale tank. The results from the pilot-scale tests must be scaled up to a full-scale waste tank.  This presentation describes the scaling approach.