Title:
RADIOACTIVE WASTE SOLIDIFICATION METHOD
Document Type and Number:
Japanese Patent JP2017026536
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a radioactive waste solidification method capable of shortening a storage period of a vitrified substance.SOLUTION: In S1A, an acid aqueous solution is injected into contaminated water containing a long-half-life radionuclide (U-238) and a short-half-life radionuclide (Cs-137) within a radioactive waste vessel, thereby reducing a pH of the contaminated water and ionizing the long-half-life radionuclide. In S1B, the pH of the contaminated water is increased by injecting an alkali aqueous solution into the contaminated water, and the long-half-life radionuclide is separated from the contaminated water by electrodeposition. In S2, the contaminated water within the radioactive waste vessel is supplied to a solidification vessel, and the short-half-life radionuclide in the contaminated water is adsorbed by an adsorbent within the solidification vessel. After discharging the contaminated water, low-melting glass is supplied into the solidification vessel. In S3, the solidification vessel filled with adsorbent adsorbing the short-half-life radionuclide and the low-melting glass is stored in a heat insulation vessel, and low-melting glass is molten with heat generated by a radiation from the short-half-life radionuclide and a vitrified substance is produced.SELECTED DRAWING: Figure 2
Inventors:
TSUTSUMIGUCHI SATORU
NOSHITA KENJI
NOSHITA KENJI
Application Number:
JP2015147378A
Publication Date:
February 02, 2017
Filing Date:
July 27, 2015
Export Citation:
Assignee:
HITACHI GE NUCLEAR ENERGY LTD
International Classes:
G21F9/16; C22B7/00; C22B60/02; C22B60/04; G21F9/06; G21F9/12
Domestic Patent References:
| JPH06230182A | 1994-08-19 | |||
| JPS62165198A | 1987-07-21 | |||
| JP2010266229A | 2010-11-25 | |||
| JPH08105998A | 1996-04-23 | |||
| JP2005061971A | 2005-03-10 | |||
| JPH07140293A | 1995-06-02 | |||
| JPS61176893A | 1986-08-08 |
Foreign References:
| US20070235702A1 | 2007-10-11 | |||
| US20140319058A1 | 2014-10-30 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation