CN100580817C - Method for treating refuse in nuclear-power station - Google Patents
Method for treating refuse in nuclear-power station Download PDFInfo
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- CN100580817C CN100580817C CN200710061676A CN200710061676A CN100580817C CN 100580817 C CN100580817 C CN 100580817C CN 200710061676 A CN200710061676 A CN 200710061676A CN 200710061676 A CN200710061676 A CN 200710061676A CN 100580817 C CN100580817 C CN 100580817C
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- treating refuse
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Abstract
A method for handling wastes of nuclear power plant includes adding zeolite with particle diameter of 100-400x10-9 as per 5-30wt% ratio into cement and then mixed-casting nuclear wastes with prepared material.
Description
Technical field
The present invention relates to a kind of Nuclear Wastes Technology, be specially a kind of method for treating refuse in nuclear-power station.
Background technology
Nuclear power station will produce nuclear wastes such as nuclear waste, nuke rubbish, nuclear rubbish when utilizing nuclear energy power generation, these nuclear wastes have very strong radioactivity, physical environment and biology had strong destruction, so how to handle the key that these nuclear wastes are safe utilization nuclear energy effectively.The way of process nuclear refuse mainly contains both at home and abroad at present: high-level waste, concentrate reaction; In low-level waste, solidify to handle, buried then or sink to the deep-sea.Nuclear waste is handled key and is how to make its effective curing, the existing ways such as general employing glass solidification, ceramic solidification, cement solidification of solidifying.Advantages such as particularly to have technology simple in cement solidification, is about to the block that nuclear waste and cement mixing are cast into a cube, and this way is because need not high temperature, and one-time investment is few and being used widely, still traditional portland cement have pair radioactive nuclide (as
90SR,
137CS) absorption property is poor, persistence is poor, and because its porosity height, generally occurs excreting water phenomenon easily after water cement ratio surpasses 0.3, and promptly nuclear waste water oozes out easily and causes the nuclear seepage; Process nuclear resin particularly, in common cement solidification nuclear resin process, cause nuclear resin in common cement block, to shrink deformation owing to a series of physical changes take place nuclear resin itself, the cement block breaks and seepage easily, so processing power is limited, cause cement solidification to have the problem of potential safety hazard.
Summary of the invention
The present invention solidifies in order to solve the Portland cement that exists in the prior art that poor stability, leaching rate are low, the problem of nuclear radioactive element adsorptive power difference and a kind of method for treating refuse in nuclear-power station is provided.
The present invention is realized by following technical scheme: a kind of method for treating refuse in nuclear-power station is to be 100～400 * 10 with particle diameter
-9The zeolite of rice adds in the cement according to 5～30% part by weight, mixes casting then with nuclear waste and gets final product.
If the nuclear waste that is used for disposing is a nuclear waste, then the water cement ratio scope that is is 0.3～0.6.
If the nuclear waste that is used for disposing is nuke rubbish or nuclear rubbish, then the scope of water cement ratio is 0.19～0.35, and it is 15%～60% that nuke rubbish or nuclear rubbish are incorporated into the amount that accounts in the cement stone cube volume.
Zeolite is preferably mordenite.Because it is condensed rock stratum for volcano magma erupts, its internal surface area is very big, and effective adsorption uranium is particularly favourable to adsorbing strontium during the volume 5% in cement, when volume reaches 5% favourable to the curing caesium when above.After zeolite reaches nanometer scale, this material performance changes in process, photomagnetic effect, tunnel effect, the interior energy of particle and surface energy increase, and can accelerate the hydration reaction of cement induction period and accelerated period after it is added in the cement, make the air-liquid-solid three-phase reach corresponding concentration gradient by supersaturation, improved the three-dimensional structure that thes cement solidifies, improve the bulk density of Cement Concrete simultaneously, not only subtract surface water but also subtract clearance rate, make micelle produce the polymerization effect of polymerization again.The cement slurry of newly mixing mainly contains Ca (OH)
2Form with the C-S-H gelinite, these two kinds of character have very important influence to the hydrated cement slurry.Ca (OH)
2Nucleation and growth in kapillary, its existence not only makes cement stone become crisp deliquescing, and impel unsettled C-S-H gelinite to decompose, the micromechanism of slurry of newly mixing cement shows: being formed with of C-S-H gelinite helps system strength and improves and increase its absorption and containing ability to nuke rubbish, its reason be it can dwindle the pore aperture and the zeolite of Nano grade exactly can with 25% Ca (OH) in the cement slurry
2Reaction, its product is the C-S-H gel, 1nm thickness prolongs into 106nm, improves silico-calcium ratio (reducing to about 0.9 from 2.2) in the cement simultaneously, has increased silicate chain length (being increased to about 3.2 from 2.6).Dwindled the voidage of Cement Concrete, with it from 75000
Be reduced to 100
(accounting for 75%), and the hydrone diameter is 250
About, air molecule is 160
About, so reduced the leaching rate of nuclear waste water effectively, intercept the intrusion of outside water simultaneously.
Beneficial effect aspect the nuclear waste of process nuclear power station generation, in the experiment of non-putting material, cement solidification piece water cement ratio excreting water phenomenon just do not occur above 0.32 after not adding the zeolitic material described in the present invention, after (water cement ratio of Daya Gulf employing at present is 0.32) adopts method of the present invention, water cement ratio can reach 0.56～0.6, leaching rate and compressive strength all meet national standard, so calculate according to every cubic metre of 1240 kilograms of cement, utilize the present invention can be than the nuclear waste of 364～374 kilograms of traditional cement solidification multiprocessings, every cubic metre of firming body can be saved to dispose and deposit expense 1～30,000 yuan.
Nuclear waste that produces in the process nuclear power station or the beneficial effect aspect the nuclear rubbish, with the spent resin is example, the present invention has started the precedent with plain cement process nuclear waste material, can get to 50～60% volume ratio to nuclear waste containing amount after adopting technology of the present invention.Detect to show firming body surface and inner no free fluid, firming body impact resistance, anti-immersion property, freeze-thaw resistance are qualified; (and that domestic standard is greater than 7MPa compressive strength is qualified, and the uranium leaching rate is less than 5X10 greater than 19.0MPa
-8Cm/d, accumulation is leached mark less than 1X10
-5Cm all satisfies the requirement that shallow ground disposal normal uranium leaching rate is lower than 5X10-5cm/d.Test block was soaked after 90 days, compressive strength does not reduce or fluffs diffusingly, still remains on 22～38MPa and leaching rate and all meets national standard, had creatively solved plain cement and had solidified nuke rubbish, the particularly difficult problem of spent resin firming body poor water resistance in the nuclear power station.
Embodiment
Embodiment 1
A kind of method for treating refuse in nuclear-power station is to be 100 * 10 with particle diameter
-9The zeolite of rice adds in the cement according to 5% part by weight, mixes casting then with nuclear waste and gets final product.
If the nuclear waste that is used for handling is a nuclear waste, then the water cement ratio scope that is is 0.3.If the nuclear waste that is used for handling is nuke rubbish or nuclear rubbish, then the scope of water cement ratio is 0.19, and it is 15% that nuke rubbish or nuclear rubbish are incorporated into the amount that accounts in the cement stone cube volume.
Embodiment 2
A kind of method for treating refuse in nuclear-power station is to be 400 * 10 with particle diameter
-9The zeolite of rice adds in the cement according to 30% part by weight, mixes casting then with nuclear waste and gets final product.
If the nuclear waste that is used for handling is a nuclear waste, then the water cement ratio scope that is is 0.6.If the nuclear waste that is used for handling is nuke rubbish or nuclear rubbish, then the scope of water cement ratio is 0.35, and it is 60% that nuke rubbish or nuclear rubbish are incorporated into the amount that accounts in the volume of cement stone cube.
Embodiment 3
A kind of method for treating refuse in nuclear-power station is to be 327.7 * 10 with particle diameter
-9The zeolite of rice adds in the cement according to 10% part by weight, mixes casting then with nuclear waste and gets final product.
If the nuclear waste that is used for handling is a nuclear waste, then the water cement ratio scope that is is 0.4.If the nuclear waste that is used for handling is nuke rubbish or nuclear rubbish, then the scope of water cement ratio is 0.25, and it is 40% that nuke rubbish or nuclear rubbish are incorporated into the amount that accounts in the cement stone cube volume.
Embodiment 4
A kind of method for treating refuse in nuclear-power station is to be 200 * 10 with particle diameter
-9The zeolite of rice adds in the cement according to 20% part by weight, mixes casting then with nuclear waste and gets final product.
If the nuclear waste that is used for handling is a nuclear waste, then the water cement ratio scope that is is 0.5.If the nuclear waste that is used for handling is nuke rubbish or nuclear rubbish, then the scope of water cement ratio is 0.30, and it is 50% that nuke rubbish or nuclear rubbish are incorporated into the amount that accounts in the cement stone cube volume.
Claims (6)
1, a kind of method for treating refuse in nuclear-power station is characterized in that: be to be 100～400 * 10 with particle diameter
-9The mordenite of rice adds in the cement according to 5～30% part by weight, mixes casting then with nuclear waste and gets final product.
2, method for treating refuse in nuclear-power station according to claim 1 is characterized in that: if the nuclear waste that is used for handling is a nuclear waste, then water cement ratio is 0.3～0.6.
3, method for treating refuse in nuclear-power station according to claim 1, it is characterized in that: if the nuclear waste that is used for handling is nuke rubbish or nuclear rubbish, then the scope of water cement ratio is 0.19～0.35, and it is 15%～60% that nuke rubbish or nuclear rubbish are incorporated into the volume that accounts in the cement stone cube.
4, method for treating refuse in nuclear-power station according to claim 1 is characterized in that: the particle diameter of mordenite is 327.7 * 10
-9Rice.
5, method for treating refuse in nuclear-power station according to claim 1 and 2 is characterized in that: water cement ratio is 0.56～0.6.
6, according to claim 1 or 3 described method for treating refuse in nuclear-power station, it is characterized in that: the scope of water cement ratio is 0.25～0.30, and it is 15%～50% that nuke rubbish or nuclear rubbish are incorporated into the volume that accounts in the cement stone cube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710061676A CN100580817C (en) | 2007-04-05 | 2007-04-05 | Method for treating refuse in nuclear-power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710061676A CN100580817C (en) | 2007-04-05 | 2007-04-05 | Method for treating refuse in nuclear-power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101030456A CN101030456A (en) | 2007-09-05 |
| CN100580817C true CN100580817C (en) | 2010-01-13 |
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|---|---|---|---|
| CN200710061676A Expired - Fee Related CN100580817C (en) | 2007-04-05 | 2007-04-05 | Method for treating refuse in nuclear-power station |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261887B (en) * | 2008-04-22 | 2011-10-12 | 南京瑞迪高新技术公司 | Method for solidifying much waster liquid based on alkali slag cement |
| CN101456715B (en) * | 2008-12-25 | 2012-07-18 | 清华大学 | Boron-containing radioactive spent resin cement solidification method |
| CN102097147B (en) * | 2010-11-02 | 2013-04-03 | 清华大学 | Method for solidifying cement with radioactive organic waste liquid |
| CN107622806B (en) * | 2017-09-22 | 2019-05-24 | 绵阳科大久创科技有限公司 | A kind of high activity liquid waste glass solidification system and its curing method |
| CN110702171A (en) * | 2019-10-29 | 2020-01-17 | 深圳慧格科技服务咨询有限公司 | Method, device and system for monitoring building waste accepting field |
-
2007
- 2007-04-05 CN CN200710061676A patent/CN100580817C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 聚合物水泥固化放射性废树脂配方的研究. 夏丽丽，林美琼，包良进，范显华.核化学与放射化学，第28卷第3期. 2006 |
| 聚合物水泥固化放射性废树脂配方的研究. 夏丽丽，林美琼，包良进，范显华.核化学与放射化学，第28卷第3期. 2006 * |
| 郭竞雄、梁春林. 沸石在水泥水化中作用机理的研究.硅酸盐学报，第8卷第3期. 1980 |
| 郭竞雄、梁春林. 沸石在水泥水化中作用机理的研究.硅酸盐学报，第8卷第3期. 1980 * |
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| CN101030456A (en) | 2007-09-05 |
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