| abstract |
The invention discloses a treatment method for high fuel consumption and high radioactive waste liquid. The concentrated feed liquid; Oxidation section, adding the neptunium oxidant with a flow rate of 0.1 in the concentrated feed liquid to oxidize the pentavalent neptunium Np in the concentrated feed liquid to hexavalent Np to obtain a pretreatment feed liquid; Extraction section, in the pretreatment feed The extraction agent with a flow rate of 0.8 to 1.6 is added to the liquid to carry out multi-stage extraction, so as to extract the uranium element, actinide element and fission element in the pretreated feed liquid into the extraction organic phase, wherein the extraction agent includes trialkylphosphine oxide. mixture; washing section, the extraction organic phase is subjected to multi-stage washing with a washing liquid with a flow rate of 0.1 to 0.3 to obtain a washed organic phase, wherein the washing liquid includes a nitric acid solution with a concentration of 1 to 1.5 mol/L; An actinide element stripping agent, a uranium element stripping agent and a fission element stripping agent with a flow rate of 0.8 to 1.6 are sequentially added to the organic phase to perform multi-stage stripping in sequence. |