Preconceptual Design Description for Caustic Recycle Facility

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

Pacific Northwest National Laboratory (U.S.)

关键词: Electrochemical Cells;    Sodium Hydroxides;    Radioactive Waste Processing;    Recycling;    12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;   

DOI  :  10.2172/934409
RP-ID  :  PNNL-17507
RP-ID  :  AC05-76RL01830
RP-ID  :  934409

美国|英语

来源: UNT Digital Library

【 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.