Spacers for ion-exchange device
US-2024307797-A1 · Sep 19, 2024 · US
Treatment method for used ion exchange resin
US10112125B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10112125-B2 |
| Application number | US-201615048155-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 19, 2016 |
| Priority date | Feb 24, 2015 |
| Publication date | Oct 30, 2018 |
| Grant date | Oct 30, 2018 |
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- Title
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Abstract
Official abstract text for this publication.
A treatment method for a used ion exchange resin, includes: bringing a used ion exchange resin into contact with a reaction solution, the used ion exchange resin having an ion exchange group with at least a radionuclide or a heavy metal element adsorbed thereon, and the reaction solution containing an iron compound, hydrogen peroxide, and ozone; separating at least a part of the reaction solution in contact with the used ion exchange resin from the used ion exchange resin; and decomposing an organic component contained in the reaction solution separated from the used ion exchange resin.
First claim
Opening claim text (preview).
What is claimed is: 1. A treatment method for a used ion exchange resin, comprising: bringing a used ion exchange resin into contact with a reaction solution, the used ion exchange resin having an ion exchange group with at least a radionuclide or a heavy metal element adsorbed thereon, and the reaction solution containing an iron compound, hydrogen peroxide, and ozone; separating at least a part of the reaction solution in contact with the used ion exchange resin from the used ion exchange resin; and decomposing an organic component contained in the reaction solution separated from the used ion exchange resin. 2. The treatment method for the used ion exchange resin according to claim 1 , wherein the reaction solution is added with an iron compound, hydrogen peroxide, and ozone during decomposing the organic component contained in the reaction solution. 3. The treatment method for the used ion exchange resin according to claim 1 , wherein at least the part of the reaction solution in contact with the used ion exchange resin is separated from the used ion exchange resin after total organic carbon concentration in the reaction solution becomes 1.7 mol/L or more. 4. The treatment method for the used ion exchange resin according to claim 1 , wherein at least the part of the reaction solution in contact with the used ion exchange resin is separated from the used ion exchange resin after concentration of the radionuclide or concentration of the heavy metal element in the reaction solution becomes a predetermined value or more. 5. The treatment method for the used ion exchange resin according to claim 1 , wherein at least the part of the reaction solution in contact with the used ion exchange resin is separated from the used ion exchange resin after adding an aggregating agent that aggregates the used ion exchange resin to the reaction solution. 6. The treatment method for the used ion exchange resin according to claim 1 , further comprising recovering the ozone during bringing the used ion exchange resin into contact with the reaction solution. 7. The treatment method for the used ion exchange resin according to claim 1 , wherein: the used ion exchange resin is brought into contact with the reaction solution in a reaction tank, and the organic component contained in the reaction solution is decomposed in a regeneration tank different from the reaction tank.
Assignees
Inventors
Classifications
by oxidation; by combustion · CPC title
for cationic exchangers · CPC title
Treating solids · CPC title
Organic substances · CPC title
- B01D15/361Primary
Ion-exchange · CPC title
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Frequently asked questions
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- What does patent US10112125B2 cover?
- A treatment method for a used ion exchange resin, includes: bringing a used ion exchange resin into contact with a reaction solution, the used ion exchange resin having an ion exchange group with at least a radionuclide or a heavy metal element adsorbed thereon, and the reaction solution containing an iron compound, hydrogen peroxide, and ozone; separating at least a part of the reaction soluti…
- Who is the assignee on this patent?
- Toshiba Kk
- What technology area does this patent fall under?
- Primary CPC classification B01D15/361. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 30 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).