Preconceptual Design Description for Caustic Recycle Facility

Sevigny, Gary J. ; Poloski, Adam P. ; Fountain, Matthew S. ; Kurath, Dean E.

关键词: AR FACILITIES;    HANFORD RESERVATION;    RADIOACTIVE WASTE PROCESSING;    VITRIFICATION;    SODIUM HYDROXIDES;    RECYCLING;    ELECTROCHEMICAL CELLS;   

DOI  :  10.2172/934409
RP-ID  :  PNNL-17507
PID  :  OSTI ID: 934409
Others  :  Other: 830403000
Others  :  TRN: US0803749

学科分类：核能源与工程

美国|英语

来源: SciTech Connect

【 摘 要 】

The U.S. Department of Energy plans to vitrify both high-level and low-activity waste at the Hanford Site in southeastern Washington State. One aspect of the planning includes a need for a caustic recycle process to separate sodium hydroxide for recycle. Sodium is already a major limitation to the waste-oxide loading in the low-activity waste glass to be vitrified at the Waste Treatment Plant, and additional sodium hydroxide will be added to remove aluminum and to control precipitation in the process equipment. Aluminum is being removed from the high level sludge to reduce the number of high level waste canisters produced. A sodium recycle process would reduce the volume of low-activity waste glass produced and minimize the need to purchase new sodium hydroxide, so there is a renewed interest in investigating sodium recycle. This document describes an electrochemical facility for recycling sodium for the WTP.