1 edition of Treatment of Spent Ion-Exchange Resins for Storage and Disposal (Technical Reports Series (International Atomic Energy Agency)) found in the catalog.
Treatment of Spent Ion-Exchange Resins for Storage and Disposal (Technical Reports Series (International Atomic Energy Agency))
by Intl Atomic Energy Agency
Written in English
|The Physical Object|
|Number of Pages||103|
The potential to generate wasteforms with enhanced properties that support safe storage and disposal is one of the key factors driving thermal treatment of radioactive waste. streams from nuclear applications produces spent ion exchange resins (IER) which can be classified either as low level Waste (LLW) or as intermediate level Waste (ILW. A process is described for reducing the volume of spent radioactive ion exchange resins which have been used for conditioning water circulated through a nuclear reactor. The spent resins are discharged from the reactor system as radioactive wastes to a spent resin storage tank in the form of a slurry.
Ion exchange, utilizing synthetic cation and anion exchange resins, is the primary method used in the purification circuits and secondary contaminated water treatment systems. Ion-exchange resins are used in light water reactor plants for purification of the primary coolant, turbine condensate, water in the spent fuel storage pools and the liquid. Disposal of Spent Resin. Ion exchange resins are non-hazardous. The material safety data sheet indicates that standard ion exchange resins have a zero rating for toxicity, fire, and reactivity. This only applies to new or uncontaminated resins. Materials that are collected on the resin beads during service can change the hazard rating of the.
The ion exchange regenerant waste will be captured and stored in tanks on-site and slowly pumped under control to the wastewater collection system to meet local groundwater quality standards. This was determined to be the most cost effective treatment option for the City and they are proceeding with the construction. INTERNATIONAL ATOMIC ENERGY AGENCY, Treatment and Conditioning of Spent Ion Exchange Resins from Research Reactors, Precipitation Sludges and Other Radioactive Concentrates (Technical Manual for the Management of Low and Intermediate Level Wastes Generated at Small Nuclear Research Centres), IAEA-TECDOC, IAEA, Vienna (). Download to.
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Treatment of spent ion-exchange resins for storage Treatment of Spent Ion-Exchange Resins for Storage and Disposal book disposal. Vienna: International Atomic Energy Agency ; [New York: exclusive sales agent in the U.S.A., UNIPUB], (OCoLC) Material Type: Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors: International Atomic Energy Agency, ISBN: X The treatment and disposal of the spent radioactive resins have become an urgent problem in the development of nuclear power plants.
As usual, spent ion-exchange resins (IERs) will be released during the operation of nuclear facility, including the recycle of nuclear fuels, demineralization of the wastewater of nuclear power plant, decontamination of nuclear installation, decommissioning of nuclear facility and Cited by: The technologies used for the treatment and disposal of spent radioactive resins, include immobilization (such as cementation, bituminization and plastic solidification), advanced oxidation.
Basically, there are two main methods for the treatment of spent organic ion exchange materials: the destruction of the organic compounds to produce an inorganic intermediate product that may or may not be further conditioned for storage and/or disposal direct immobilization, producing a stable end product.
The subject of ion exchange processes and the treatment of spent ion exchange media has been covered in two IAEA Technical Reports, one published in (Technical Reports Series No. 78, Operation and Control of Ion-exchange Processes for Treatment of Radioactive Wastes), the other in (Technical Reports Series No.
Treatment of Spent Ion-exchange Resins for Storage and. Dewater and drying treatment is a traditional method that mainly used for conditioning of spent ion-exchange resins.
Then, they are packed with or without absorbents into containers for storage or even for disposal [ 1 ]. The method generally preferred at present is to include immobilization in the conditioning.
Treatment and Conditioning of Spent Ion Exchange Resins from Research Reactors, Precipitation Sludges and Other Radioactive Concentrates Design of a Centralized Waste Processing and Storage Facility. The order of preparation of the manuals is based on priority needs of Member States and it is recognized that additional areas of technical need.
Ion exchange processes are used in a number of stages. They are widely used in spent fuel storage pond water treatment and reactor coolant clean up systems. Nuclear power station of Mwe capacity generates around 20 of spent ion exchange resin wastes annually .
The nuclear grade resins are mainly based on polystyrene type with divinyl. The storage of spent resins in water and wet media poses a major challenge in nuclear waste management. In the case of wet media storage, the generation of hydrogen gas from spent ion exchange resins is a fairly well under-stood phenomenon and is based upon the radiolysis de-composition of water by alpha, beta and gamma radiation.
handling and treatment for their storage and disposal. The International Atomic Energy Agency convened a Technical Committee Meeting in December to consider the management of spent ion-exchange resins with respect to their treatment and conditioning. The present report contains the information presented at this meeting as well as.
For most facilities, resins should only be discarded when the output quality or loss in capacity justifies the re-bedding costs, which can be substantial, as they include removal and disposal of old resin, and purchase and installation of new resin.
There are a few key indicators that it might be time for IX resin replacement. On-site treatment and solidification of spent ion exchange resins at Dukovany NPP involves process of resin removal from tank using remotely operated manipulator, resin transportation, resin separation from free water, resin filling into dm 3 drums and solidification into SIAL ® matrix in dm 3 drums using the FIZA S facility.
Most likely the waste removal company will ask for an MSDS on the ion exchange resin you want to throw away. MSDS for most ion exchange resins can be found on this site using the search function.
As part of our rebed service (service to change out spent ion exchange resin or activated carbon) Res-Kem will arrange for proper disposal of spent ion exchange resin or activated carbon on. for Conditioning Spent Ion Exchange Resins The main requirements included: • content of free liquid in the RW package should be less than 3% mass; • the package shall maintain integrity in process of storage (disposal).
Implementation of drying only does not conform to the requirements of NP, as dried IER in storage. Several radionuclides including tritium generated in heavy-water reactor nuclear power plants are managed through ion-exchange resins, and these spent resins are then stored in storage tanks.
To maintain the capacity of the storage tanks, the waste sludge should be treated using appropriate methods. reactor fuel pond using ion exchange resins have been reviewed in this paper. The potential of verification to immobilize and contain the spent ion exchange resin for long term disposal using novel borosilicate glass has been discussed.
Introduction Ion exchange is one of the most common and effective methods for treating liquid. Ion exchange resins are in uranium mining to produce yellow cake. "Ion-exchange beads are also an essential component in In-situ leach uranium mining. In-situ recovery involves the extraction of uranium-bearing water (grading as low as% U3O8) through boreholes.
The extracted uranium solution is then filtered through the resin beads. Keeping ion exchange resins well-maintained will help your facility get the maximum amount of service life out of them. A “normal” resin service life can be based on the number of times it’s regenerated; the more it’s regenerated, the less life the resins will have as they eventually wear out.
versa. The ion-exchange material may be regenerated after having reached saturation of the active groups (break through capacity). Some types of ion exchangers are also removed as waste concentrate to be solidified.
Therefore the ion-exchange process represents a semi-continuous process and requires major efforts in main. Purolite S Ion Exchange Resin for Uranium Removal from Effluents Generated During a Spent Catalyst Treatment Process: Real Waste Uptake and Elution Studies Conference Paper. A method for processing spent radioactive ion exchange resin formed in a nuclear power plant by a two-step pyrolysis method.
First, the spent resin is heated at ° C. to decompose functional groups selectively. Then the base polymer, formed as residue, is decomposed at a temperature above ° C., e.g. ° C. After the thermal decomposition, exhaust gases which require a special exhaust.ION EXCHANGE RESINS WHICH HAVE BECOME CONTAMINATED WITH RADIOACTIVATE MATERIALS, ARE REDUCED IN VOLUME FOR PRUPOSES OF DISPOSAL BY TREATING THE CONTAMINATED RESINS WITH CERTAIN SOLVENTS HAVING A.RISKS OF IEX STORAGE The storage of spent resins in water and wet media poses a major challenge in nuclear waste management.
In the case of wet media storage, the generation of hydrogen gas from spent ion exchange resins is a fairly well understood phenomenon and is based upon the.