CN104900285A - A treatment method for radionuclide-containing pollutants - Google Patents
A treatment method for radionuclide-containing pollutants Download PDFInfo
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- CN104900285A CN104900285A CN201510161738.0A CN201510161738A CN104900285A CN 104900285 A CN104900285 A CN 104900285A CN 201510161738 A CN201510161738 A CN 201510161738A CN 104900285 A CN104900285 A CN 104900285A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
- G21F9/10—Processing by flocculation
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/04—Treating liquids
- G21F9/06—Processing
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/28—Treating solids
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a treatment method for radionuclide-containing pollutants. Firstly, if the pollutants are liquid or particles with the size less than 70 microns, the method comprises the steps of adding zeolite, a flocculant, and a coagulant aid in the liquid state pollutants, adjusting the PH value, stirring the mixture for 5-60 minutes, separating solids and liquid, obtaining supernate, and repeating the above-mentioned steps many times until obtained supernate meets requirements. Secondly, if the pollutants are particles with the size greater than 70 microns, the method comprises the steps of cleaning the pollutants with a cleaning fluid, separating solids and liquid and treating the obtained liquid substance with the method mentioned in the first part. Thirdly, if the pollutants are large-area solid pollutants, the method comprises the steps of applying livering cleaning liquid on the solid pollutants, standing the pollutants on the condition of exclusion of water, performing rinsing, collecting the cleaning agent on the solid pollutants and performing treating with the method mentioned in the first part. The method can effectively remove radionuclide in solids, particles, powder and waste water, is good in treatment effect, and can reduce the cost consumed in the radionuclide removing process, shorten the treatment time and reduce the treatment cost.
Description
Technical field
The present invention relates to sewage water treatment method, especially relate to a kind of administering method containing radionuclide contamination thing.
Background technology
The widespread use of current nuclear technology in many fields such as the energy, scientific research, medical treatment, industry, agricultural, military affairs, traffic, health care brings growing nuclear pollution problem.Great potential threat is there is in these radioactive wastes to environment and public health.Process the difficult problem that these radioactive wastes become global.
At present containing the waste water control of radioactive nuclide, many employings ion-exchange processes, such method can process different kinds of ions, but the time of process is longer, be not suitable for the process of large amount of sewage, for the process of sewage, the process especially containing the sewage of radioactive nuclide brings great inconvenience.
Traditional administering method, as adopted containing the mechanical cleaning process of surfactant, ion-exchange-resin process, membrane separation process and the acid-hatching of young eggs etc., also exists that capital expenditure is high, disposal cost is large, treatment effect is undesirable and easily causes the problems such as secondary pollution.The radioactive nuclide removed in environment is very difficult.For large area low dosage radioactive contamination soil, it is high that low in physical-chemical process process soil-aqueous medium puts nucleic cost, and easily cause secondary pollution, is difficult to operate on the spot.Recent study emphasis turns to biochemical processing gradually, and research finds that many microbial adsorbents can be used for the process of heavy metal and radioactivity heavy metal wastewater thereby.But because biosome self is subject to the restriction of all many condition, make it be difficult to be widely applied.
Summary of the invention
The object of the present invention is to provide a kind of administering method containing radionuclide contamination thing, adopt the method that existing flocculating agent and clean-out system are used alone or are combined, radioactive nuclide in effective removal solid, particle, powder and sewage, production and application is convenient, and stimulation effect is good, and flocculating effect is good, cleaning performance is good, reduce the cost expended in radioactive nuclide removal process, shorten the processing time, reduce processing cost.
The object of the present invention is achieved like this: a kind of administering method containing radionuclide contamination thing, is characterized in that: comprise following method step:
A. pollutant is liquid: in fluid contaminants, add zeolite, flocculating agent, coagulant aid, adjustment PH stir 5 ~ 60 minutes, separating solid substances and liquid, gets supernatant and repeats for several times said process and meet standard to supernatant;
B. pollutant is the particle that particle diameter is less than 70 microns: particle is mixed the method process adopted described in steps A with liquid pollutant;
C. pollutant is the particle that particle diameter is greater than 70 microns: particulate pollutant particle diameter being greater than 70 microns uses volume for the cleaning fluid of pollutant 2 ~ 5 times is at 50 ~ 300 DEG C, stirring reaction more than 6 hours under pressure 1 ~ 20 atmospheric condition, be cooled to separating solids and liquid after normal temperature, then adopt the method described in steps A to carry out processing the liquid substance of gained;
D. pollutant is large-area solid pollutant: by the warm water dilution of cleaning fluid with 5 ~ 10 times, add gel builder after adding surfactant to stir, then the cleaning fluid after gel is spread upon on solid pollutant according to the amount of 0.5 ~ 2 liter/square metre, keep away water and place more than 6 hours, post-flush, collect on solid pollutant clean-out system after use the method described in steps A to process.
Described zeolite is the particle of 500 ~ 800 order sizes.
Described flocculating agent is any one in the organic flocculant of polyacrylamide series, inorganic molysite flocculating agent or inorganic aluminate flocculating agent.
Described coagulant aid is bentonitic clay or activated charcoal.
The adjustment of described pH value can use sodium carbonate or iron chloride.
Described cleaning fluid is the sea water solution of any one or multiple potpourri in sylvite, ammonium salt, calcium salt and formic acid, and seawater is that total concentration is greater than the sodium chloride of 10% and the aqueous solution of magnesium chloride.
A kind of administering method containing radionuclide contamination thing of the present invention, adopt the method that existing flocculating agent and clean-out system are used alone or are combined, radioactive nuclide in effective removal solid, particle, powder and sewage, treatment effect is good, and production and application is convenient, stimulation effect is good, flocculating effect is good, and cleaning performance is good, reduces the cost expended in radioactive nuclide removal process, shorten the processing time, reduce processing cost.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed.
Containing an administering method for radionuclide contamination thing, it is characterized in that: comprise following method step:
A. pollutant is liquid: in fluid contaminants, add zeolite, flocculating agent, coagulant aid, adjustment PH stir 5 ~ 60 minutes, separating solid substances and liquid, gets supernatant and repeats for several times said process and meet standard to supernatant;
B. pollutant is the particle that particle diameter is less than 70 microns: particle is mixed the method process adopted described in steps A with liquid pollutant;
C. pollutant is the particle that particle diameter is greater than 70 microns: particulate pollutant particle diameter being greater than 70 microns uses volume for the cleaning fluid of pollutant 2 ~ 5 times is at 50 ~ 300 DEG C, stirring reaction more than 6 hours under pressure 1 ~ 20 atmospheric condition, be cooled to separating solids and liquid after normal temperature, then adopt the method described in steps A to carry out processing the liquid substance of gained;
D. pollutant is large-area solid pollutant: by the warm water dilution of cleaning fluid with 5 ~ 10 times, add gel builder after adding surfactant to stir, then the cleaning fluid after gel is spread upon on solid pollutant according to the amount of 0.5 ~ 2 liter/square metre, keep away water and place more than 6 hours, post-flush, collect on solid pollutant clean-out system after use the method described in steps A to process.
Described zeolite is the particle of 500 ~ 800 order sizes.
Described flocculating agent is any one in the organic flocculant of polyacrylamide series, inorganic molysite flocculating agent or inorganic aluminate flocculating agent.
Described coagulant aid is bentonitic clay or activated charcoal.
The adjustment of described pH value can use sodium carbonate or iron chloride.
Described cleaning fluid is the sea water solution of any one or multiple potpourri in sylvite, ammonium salt, calcium salt and formic acid, and seawater is that total concentration is greater than the sodium chloride of 10% and the aqueous solution of magnesium chloride.
The preparation of artificial seawater: add the sodium chloride of 10% and the magnesium chloride of 1.3% in tap water.
The preparation of simulating pollution water: add in cesium chloride, strontium chloride and Potassiumiodate in the middle of tap water, seawater or artificial seawater one or more, make concentration be respectively 1mg/L, 8mg/L and 10mg/L.
Test the artificial seawater solution that standard solution used is respectively the artificial seawater solution of 1.0mg/L cesium chloride, the artificial seawater solution of 1.0mg/L strontium chloride and 0.4mg/L Potassiumiodate.
Embodiment 1
The preparation of simulating pollution water: add cesium chloride, strontium chloride and Potassiumiodate in the seawater, makes concentration be respectively 1mg/L, 8mg/L and 10mg/L.
In simulating pollution water according to mass percent add the sodium carbonate of 2%, the zeolite of 2% and 0.05% flocculating agent stir 10 minutes, use ICP-MS to measure strontium in upper strata clear water
(Sr), iodine (I), caesium (Cs) concentration.Measurement result: Sr clearance is 92.7%, I clearance is 26.1%, Cs clearance is 89.8%.Then the pH value of upper strata clear water is adjusted to 4 ~ 5, the hydrogen peroxide of 0.1%, 10% ferric chloride in aqueous solution of 0.5% is added according to mass percent in upper strata clear water in above-mentioned process 1, stir 10 minutes, adopt Sr, I, Cs concentration measured in the same way in the clear water of upper strata.Its measurement result: Sr clearance is 93.3%, I clearance is 68.8%, Cs clearance is 90.1%.
Embodiment 2
The preparation of simulating pollution water: add cesium chloride, strontium chloride and Potassiumiodate in the seawater, makes concentration be respectively 1mg/L, 8mg/L and 10mg/L.
In simulating pollution water according to massfraction add 0.5% sodium carbonate and 1.6% zeolite and 0.05% flocculating agent stir 15 minutes.Then in the clear water of upper strata according to massfraction add 1% sodium carbonate, 1% zeolite, 0.2% the flocculating agent of lime chloride 0.05%, stir after 15 minutes.Then, in the clear water of upper strata, add 10% ferric chloride in aqueous solution of 0.5% according to massfraction, after pH value is adjusted to 4 ~ 5, add the flocculating agent of 0.5% zeolite and 0.05%, stir 5 minutes.Finally, ICP-MS is used to measure Sr, I, Cs concentration in the clear water of upper strata.Measurement result: Sr clearance is 90.9%, I clearance is 97.2%, Cs clearance is 99.3%.
Embodiment 3
The preparation of simulating pollution water: add cesium chloride, strontium chloride and Potassiumiodate in the seawater, makes concentration be respectively 1mg/L, 8mg/L and 10mg/L.
In simulating pollution water according to massfraction add 1% sodium carbonate, the zeolite of 1.0%, the lime chloride of 0.2% and 0.05% flocculating agent, stir after 15 minutes.Then in the clear water of upper strata, add the flocculating agent of 0.4% zeolite and 0.05%, add the iron protochloride of 8g according to the every 5ml supernatant of volume, pH value is adjusted to 4 ~ 5, stir after 10 minutes, use ICP-MS to measure Sr, I, Cs concentration.Measurement result: Sr clearance is 91.5%, I clearance is 96.8%, Cs clearance is 96.5%
Embodiment 4
The preparation of simulating pollution water: add cesium chloride, strontium chloride and Potassiumiodate in artificial seawater, makes concentration be respectively 1mg/L, 8mg/L and 10mg/L.
In simulating pollution water according to massfraction add 1% sodium carbonate, the zeolite of 1.0%, the lime chloride of 0.2% and 0.05% flocculating agent, stir after 15 minutes, use ICP-MS to measure Sr, I, Cs concentration in upper strata clear water.Measurement result: Sr clearance is 82.5%, I clearance is 32.7%, Cs clearance is 80.2%.
Repeat a said process after measurement again, then add 0.4% zeolite, 0.05% flocculating agent, add the iron protochloride of 8g according to the every 5ml supernatant of volume, pH value be adjusted to 4 ~ 5, stir 10 minutes, then measure Sr, I, Cs concentration in the clear water of upper strata.Measurement result: Sr clearance is 94.3%, I clearance is 95.5%, Cs clearance is 97.9%.
Embodiment 5
The preparation of simulating pollution water: add cesium chloride, strontium chloride and Potassiumiodate in artificial seawater, makes concentration be respectively 1mg/L, 8mg/L and 10mg/L.
Add potassium ferrocyanide according to the ratio of 42mg/100ml in simulating pollution water, add mass percent 5% distilled water, add bentonitic clay according to the ratio of 1g/100ml, add according to mass percent 0.5% 10% iron protochloride brand-new aqueous solution, stir ten minutes.Measurement result: Sr clearance is 25.3%, I clearance is 10.9%, Cs clearance is 99.6%.
In simulating pollution water according to mass percent add 1% sodium carbonate, the zeolite of 1.0%, the lime chloride of 0.2% and 0.05% flocculating agent, stir 15 minutes.Then supernatant liquor is taken out, then repeat an aforesaid operations.Finally, in the clear water of upper strata, add the zeolite of 0.4% and the flocculating agent of 0.05% and add according to mass percent 0.5% 10% iron protochloride brand-new aqueous solution, pH value is adjusted to 4 ~ 5, stirs after 10 minutes, then measure Sr, I, Cs concentration in upper water.Measurement result: Sr clearance is 93.6%, I clearance is 99.8%, Cs clearance is 98.9%.
Embodiment 6
The preparation of simulating pollution water: add cesium chloride and make concentration be 1mg/L in tap water.
In simulating pollution water according to massfraction add 0.75% zeolite, the aluminium sulphate of 0.3%, the sodium carbonate of 0.45% and 0.03% flocculating agent, stirs after 10 minutes, measurement upper strata clear water intermediate ion concentration.Measurement result: Sr clearance is 96.2%.
Embodiment 7
The preparation of simulating pollution water: add cesium chloride and make concentration be 1mg/L in tap water.
In simulating pollution water, add 1.5% zeolite and 0.03% flocculating agent according to massfraction, stir after 10 minutes, measure upper water intermediate ion concentration.Measurement result: Sr clearance is 99.7%.
Embodiment 8
The preparation of simulating pollution water: add cesium chloride, strontium chloride in tap water, makes concentration be respectively 1mg/L, 8mg/L.
Add in simulating pollution water the zeolite of 0.07%, the aluminium sulphate of 0.3%, the sodium carbonate of 0.45% and 0.03% flocculating agent, stir after 10 minutes, measure upper strata clear water intermediate ion concentration.Measurement result: Sr clearance is 89.1%, Cs clearance is 92.2%.
Embodiment 9
The preparation of simulating pollution water: add cesium chloride and make concentration be 1mg/L in tap water.
In simulating pollution water according to massfraction add the sodium carbonate of 1%, the zeolite of 1% and 0.5% lime chloride, stir after 10 minutes, use ICP-MS to measure Sr concentration in upper strata clear water.Measurement result: Sr clearance is 99.9%.
Embodiment 10
The preparation of simulating pollution water: add strontium chloride in tap water, makes concentration be 8mg/L.
In simulating pollution water, add the zeolite of 3% and the aluminium sulphate of 0.3% according to massfraction, stir after 10 minutes, measure Cs concentration in the clear water of upper strata.Measurement result: Cs clearance is 99.9%.
Embodiment 11
The preparation of simulating pollution water: add cesium chloride, strontium chloride in tap water, makes concentration be respectively 1mg/L, 8mg/L.
Radioactive contamination fallen leaves are gathered at hot area, branch etc., the radioactive pollutant collected is put into comminutor to pulverize, the pollutant powder collecting below 700 orders drops in simulating pollution water according to volume ratio 1:5, mix rear scintillation counter and measure potpourri radioactivity amount, specific radioactivity is 40830cpm after testing, then the zeolite of 0.75% will be added in mixed pollutants according to massfraction, the aluminium sulphate of 0.3%, the sodium carbonate of 0.45% and the flocculating agent of 0.03%, stir after 10 minutes, centrifuging, get supernatant, repeat said process once after, the specific radioactivity of supernatant liquor is 2613cpm, specific activity before clearance=(specific activity after the specific activity-improvement before improvement)/improvement, calculating clearance is 93.6%.Water after separation can recycle in an experiment, and the sediment containing radiomaterial need be stored in appointed place.
Embodiment 12
The preparation of simulating pollution water: add cesium chloride in the seawater and make concentration be 1mg/L.Radioactive contamination fallen leaves, branch etc. are gathered at hot area, the radioactive pollutant collected is put into comminutor to pulverize, the pollutant powder collecting below 700 orders drops in simulating pollution water according to volume ratio 1:8, mix rear scintillation counter and measure potpourri radioactivity amount, specific radioactivity is 39620cpm after testing, then by mixed pollutants according to massfraction add the zeolite of 1.5%, the silver nitrate of 0.02% and 0.03% flocculating agent, stir after 10 minutes, centrifuging, measures the radioactivity amount of upper strata clear water.Measurement result: the specific radioactivity of supernatant liquor is 2060cpm, the specific activity before clearance=(specific activity after the specific activity-improvement before improvement)/improvement, calculating clearance is 94.8%.Water after separation can recycle in an experiment, and the sediment containing radiomaterial need be stored in appointed place.
Embodiment 13
The preparation of simulating pollution water: add cesium chloride, strontium chloride and Potassiumiodate in artificial seawater, makes concentration be respectively 1mg/L, 8mg/L and 10mg/L.
Radioactive contamination fallen leaves, branch etc. are gathered at hot area, the radioactive pollutant collected is put into comminutor to pulverize, the pollutant powder collecting below 700 orders drops in simulating pollution water according to volume ratio 1:10, mix rear scintillation counter and measure potpourri radioactivity amount, specific radioactivity is 42050cpm after testing, then by mixed pollutants according to massfraction add the sodium carbonate of 1%, the zeolite of 1% and 0.5% lime chloride, stir after 10 minutes, centrifuging, measures the radioactivity amount of upper strata clear water.Measurement result: the specific radioactivity of supernatant liquor is 210cpm, the specific activity before clearance=(specific activity after the specific activity-improvement before improvement)/improvement, calculating clearance is 99.5%.Water after separation can recycle in an experiment, and the sediment containing radiomaterial need be stored in appointed place.
Embodiment 14
Radioactive contamination fallen leaves, branch etc. are gathered at hot area, the radioactive pollutant collected is put into comminutor to pulverize, collect the pollutant of more than 700 orders, by a certain amount of radioactive contamination soil (specific radioactivity is 1020cpm), mix with the ratio of 1:2.5 with cleaning fluid, then potpourri is put into high-pressure reactor, be warmed to 220 DEG C, pressure remains on 2MPa, run to carry out after 30 minutes cooling, suction filtration, oven dry, using NaI scintillation counter to measure soil radioactivity amount is 42cpm, according to formula:
Specific activity before clearance=(specific activity after the specific activity-improvement before improvement)/improvement
Calculating clearance is 95.9%.Sewage containing radioactive pollutant adopts the process of steps A method.
Real real 15
By a certain amount of radioactive contamination soil (specific radioactivity is 1020cpm), mix with the ratio of 1:2.5 with cleaning fluid, then potpourri is put into high-pressure reactor, be warmed to 180 DEG C, pressure remains on 1MPa, run to carry out after 30 minutes cooling, suction filtration, oven dry, using NaI scintillation counter to measure soil radioactivity amount is 103cpm, according to formula:
Specific activity before clearance=(specific activity after the specific activity-improvement before improvement)/improvement
Calculating clearance is 89.9%.Sewage containing radioactive pollutant adopts the process of steps A method.
Embodiment 16
By a certain amount of burning ash (specific radioactivity is 3000cpm), mix with the ratio of 1:2.5 with cleaning fluid, the hydrochloric acid solution adding 1M regulates PH to 6, carry out run 30min under 100 DEG C of conditions after cooling, suction filtration, oven dry, using NaI scintillation counter to measure soil radioactivity amount is 1635cpm, according to formula:
Specific activity before clearance=(specific activity after the specific activity-improvement before improvement)/improvement
Calculating clearance is 45.5%.Sewage containing radioactive pollutant adopts the process of steps A method.
Real real 17
By the warm water dilution of cleaning fluid with 8 times, add gel builder after adding surfactant to stir, then the cleaning fluid after gel is spread upon on solid pollutant (specific radioactivity is 4038cpm) according to the amount of 1 liter/square metre, keep away water and place 6 hours, post-flush, collect on solid pollutant clean-out system after process together.Using NaI scintillation counter to measure the solid radioactive amount after processing is 460cpm, according to formula:
Specific activity before clearance=(specific activity after the specific activity-improvement before improvement)/improvement
Calculating clearance is 88.6%.Sewage containing radioactive pollutant adopts the process of steps A method.
Can be proved by above-mentioned experiment, the present invention can make element-specific rapid precipitation and remove, and particularly has efficient removal ability to Sr, I, Cs.For the process of radioactive nuclide, equally also have higher clearance.
The foregoing is only the detailed description of specific embodiment of the invention scheme, do not limit the present invention with this, all do in mentality of designing of the present invention any amendment, equivalent to replace and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1., containing an administering method for radioactive pollutant, it is characterized in that: comprise following method step:
A. pollutant is liquid: in fluid contaminants, add zeolite, flocculating agent, coagulant aid, adjustment PH stir 5 ~ 60 minutes, separating solid substances and liquid, gets supernatant and repeats for several times said process and meet standard to supernatant;
B. pollutant is the particle that particle diameter is less than 70 microns: particle is mixed the method process adopted described in steps A with liquid pollutant;
C. pollutant is the particle that particle diameter is greater than 70 microns: particulate pollutant particle diameter being greater than 70 microns uses volume for the cleaning fluid of pollutant 2 ~ 5 times is at 50 ~ 300 DEG C, stirring reaction more than 6 hours under pressure 1 ~ 20 atmospheric condition, be cooled to separating solids and liquid after normal temperature, then adopt the method described in steps A to carry out processing the liquid substance of gained;
D. pollutant is large-area solid pollutant: by the warm water dilution of cleaning fluid with 5 ~ 10 times, add gel builder after adding surfactant to stir, then the cleaning fluid after gel is spread upon on solid pollutant according to the amount of 0.5 ~ 2 liter/square metre, keep away water and place more than 6 hours, post-flush, collect on solid pollutant clean-out system after use the method described in steps A to process.
2. the administering method of a kind of radionuclide contamination thing according to claim 1, is characterized in that: described zeolite is the particle of 500 ~ 800 order sizes.
3. a kind of administering method containing radionuclide contamination thing according to claim 1, is characterized in that: described flocculating agent is any one in the organic flocculant of polyacrylamide series, inorganic molysite flocculating agent or inorganic aluminate flocculating agent.
4. a kind of administering method containing radionuclide contamination thing according to claim 1, is characterized in that: described coagulant aid is bentonitic clay or activated charcoal.
5. a kind of administering method containing radionuclide contamination thing according to claim 1, is characterized in that: the adjustment of described pH value uses strong acid weak base salt, strong base-weak acid salt, mineral acid or highly basic.
6. a kind of administering method containing radionuclide contamination thing according to claim 1, it is characterized in that: described cleaning fluid is the sea water solution of any one or multiple potpourri in sylvite, ammonium salt, calcium salt and formic acid, and seawater is that total concentration is greater than the sodium chloride of 10% and the aqueous solution of magnesium chloride.
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Cited By (5)
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| CN108109713B (en) * | 2017-12-13 | 2021-06-22 | 四川知创空间孵化器管理有限公司 | Method for treating radioactive medical wastewater |
| CN110563434A (en) * | 2018-05-10 | 2019-12-13 | 湖州师范学院 | Buffer backfill material for high-level radioactive waste disposal warehouse and preparation method thereof |
| CN110563434B (en) * | 2018-05-10 | 2022-11-08 | 湖州师范学院 | Buffer backfill material for high-level radioactive waste disposal warehouse and preparation method thereof |
| CN109536308A (en) * | 2018-12-25 | 2019-03-29 | 沈阳泰琦科技有限公司 | A kind of cleaning agent and preparation method thereof removing radioactive pollutant |
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