Processing system for decontaminating liquid waste
Description
Ce4+ is recovered by means of an anion exchange resin method from radioactive metal ions dissolved in decontaminated liquid wastes, iron ions, nickel ions and chromium ions leached out from decontaminated products and Ce3+ and Ce4+ as a decontaminating agent. Subsequently, a neutralizing agent for stabilizing only free sulfuric acid is applied to redox decontaminating liquid wastes after recovering Ce+4, is which iron ions, chromium ions and nickel ions are dissolved. The decontaminating liquid wastes are dehydrated under microwave heating to form sulfates. The sulfates are powderized and kept in the state as they are, or solidified separately depending on their radiation level. When Ce+4 in the decontaminating liquid wastes is thus recovered and re-utilized, the amount of the decontaminating liquid wastes formed can be decreased, and the amount of secondary wastes formed can be suppressed by forming sulfates by dehydration under heating. (T.M.)
Availability note (English)
Available from JAPIO. Also available from INPADOC.Additional details
Publishing Information
- Imprint Pagination
- 5 p.
- IPC:
- Int. Cl. G21F9/12.
- IPC
- Int. Cl. G21F9/12.
- Patent number
- JP patent document 2-216097/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 22035208
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- CERIUM; CERIUM IONS; DECONTAMINATION; ION EXCHANGE MATERIALS; LIQUID WASTES; RADIOACTIVE MATERIALS; RADIOACTIVE WASTE PROCESSING; RECYCLING; REDOX PROCESS; SURFACE CONTAMINATION
- Descriptors DEC
- ATOMIC IONS; CHARGED PARTICLES; CLEANING; CONTAMINATION; ELEMENTS; IONS; MANAGEMENT; MATERIALS; METALS; RARE EARTHS; REPROCESSING; SEPARATION PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES
Optional Information
- Secondary number(s)
- JP patent application 1-37203.