Media comparison of filtration with hanford tank AP-107 supernate

ABSTRACTThe present experimental work was performed to investigate media performance in both cross-flow and dead-end filtration of 9 L of Hanford tank AP-107 supernate. Media grades 0.1 and 5 were tested for both cross-flow filters (CFF) and dead-end filters (DEF). The CFFs were tested in a cells unit filter (CUF) system in recycle mode; the DEFs (in-line and disc) were used to dewater the feed. Visual inspection of the feed material indicated essentially no settled insoluble solids. The grade 5 CFF produced stable filter fluxes while the flux for the grade 0.1 CFF steadily decayed. The grade 5 BDEF (backpulsed DEF) was effective at removing solids from the AP-107 feed and when backpulsed, fully restored the filter flux, indicating that the solids did not irreversibly foul the filter. The grade 0.1 DEF was used to filter the final 2 L of AP-107 feed drained from the CUF and to collect solids on the filter media for post-test characterization. Additional DEF filtering was performed on 4 L of BDEF permeate ...