Process for disposing of radioactive liquid waste
US4775495A · kind A · utility
12Cited by
12References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1986 |
| Grant date | Oct 4, 1988 |
| Priority date | — |
| Expiry date | Feb 6, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21F9/162
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The process of the present invention comprises adding an alkaline earth metal hydroxide such as barium hydroxide to a radioactive liquid waste containing sodium sulfate as the main component to convert the latter into an insoluble alkaline earth metal salt such as barium sulfate, adding silicic acid to by-product sodium hydroxide to prepare water glass and solidifying the radioactive insoluble alkaline earth metal salt with the water glass. According to this process, exudation of radioactive substances from the solid can be prevented and the solid having a high durability can be obtained at a low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.