Testing of the SpinTek Rotary Microfilter Using Actual Waste

Herman, D.T.

Savannah River Site (S.C.)

关键词: 12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;    Filters;    Radioactive Waste Processing;    Performance Testing;    Ultrafiltration;   

DOI  :  10.2172/821500
RP-ID  :  WSRC-TR-2003-00030, Rev. 1
RP-ID  :  AC09-96SR18500
RP-ID  :  821500

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Department of Energy selected caustic-side solvent extraction (CSSX) as the preferred cesium-removal technology for SRS high-level waste. In the pretreatment step of the CSSX flowsheet, the incoming salt solution, which contains entrained sludge, is contacted with MST to adsorb strontium and selected actinides. An alternative approach replaces MST with the addition of sodium permanganate, strontium nitrate, and hydrogen peroxide. The pretreatment operation then filters the resulting slurry to remove the sludge and MST or manganese oxide and strontium carbonate solids. The filtrate receives further treatment in the solvent extraction system. SRTC personnel coordinated tests using a SpinTek rotary microfilter at the vendor location in FY01. These tests demonstrated a significant improvement - 2.5 to 6 times increase - in performance relative to the conventional cross-flow filter units. Rotary microfilter testing used a filter disk with nominal pore size of either 0.1-micron or 0. 5-micron. The custom-made disks used sintered metal sheets as the filter media. The disks differed slightly in design of the permeate carrier, which facilitates flow of the product liquid. We measured filter flux and filter decontamination factor. For determining the decontamination factor, we collected samples of filtrate and feed during each test and analyzed the samples to evaluate solids and radionuclide removal.