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US-9205422-B2 · Dec 8, 2015 · US
Method of treating radioactive liquid waste and radioactive liquid waste treatment apparatus
US9799418B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9799418-B2 |
| Application number | US-201414913024-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 29, 2014 |
| Priority date | Aug 23, 2013 |
| Publication date | Oct 24, 2017 |
| Grant date | Oct 24, 2017 |
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Abstract
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Provided is a method of treating radioactive liquid waste which reduces the amount of radioactive waste to be generated and is capable of removing a radioactive nuclide from radioactive liquid waste to the extent that the concentration thereof is less than or equal to the measurement lower limit using a simple apparatus configuration. A filtration device is connected to a colloid removal device by a connection pipe. An adsorption tower positioned at the highest stream of an adsorption device is connected to the colloid removal device by a connection pipe. The colloid removal device includes an electrostatic filter. Respective adsorption towers in the adsorption device are sequentially connected by a pipe. A discharge pipe is connected to the adsorption tower positioned at the lowest stream of the adsorption device. Radioactive liquid waste, containing particles having a particle diameter of 1 μm or greater, negatively charged colloids, and a radioactive nuclide, is supplied to the filtration device. The particles having a particle diameter of 1 μm or greater are removed by the filtration device and the negatively charged colloids are removed by the electrostatic filter that is positively charged. The radioactive nuclide is removed by the adsorption tower.
First claim
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The invention claimed is: 1. A method of treating radioactive liquid waste comprising: supplying radioactive liquid waste which contains a colloidal substance, a particulate substance having a particle diameter greater than that of the colloidal substance, and a radioactive substance to a filtration device such that the particulate substance is removed by the filtration device; removing the colloidal substance which is contained in the radioactive liquid waste discharged from th…
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Frequently asked questions
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- What does patent US9799418B2 cover?
- Provided is a method of treating radioactive liquid waste which reduces the amount of radioactive waste to be generated and is capable of removing a radioactive nuclide from radioactive liquid waste to the extent that the concentration thereof is less than or equal to the measurement lower limit using a simple apparatus configuration. A filtration device is connected to a colloid removal device…
- Who is the assignee on this patent?
- Hitachi Ge Nuclear Energy Ltd
- What technology area does this patent fall under?
- Primary CPC classification G21F9/12. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 24 2017 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).