CN104386865A - Method for treating uranium-containing waste water - Google Patents
Method for treating uranium-containing waste water Download PDFInfo
- Publication number
- CN104386865A CN104386865A CN201410529994.6A CN201410529994A CN104386865A CN 104386865 A CN104386865 A CN 104386865A CN 201410529994 A CN201410529994 A CN 201410529994A CN 104386865 A CN104386865 A CN 104386865A
- Authority
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- China
- Prior art keywords
- uranium
- containing waste
- waste water
- industrial
- iron powder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 127
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 73
- 239000002351 wastewater Substances 0.000 title claims abstract description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000002699 waste material Substances 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims description 42
- 239000008346 aqueous phase Substances 0.000 claims description 16
- 238000000151 deposition Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- 238000000967 suction filtration Methods 0.000 claims description 7
- 238000002525 ultrasonication Methods 0.000 claims description 7
- 238000002604 ultrasonography Methods 0.000 claims description 7
- 238000011282 treatment Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 7
- 230000004223 radioprotective effect Effects 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 239000002893 slag Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000011284 combination treatment Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002354 radioactive wastewater Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/006—Radioactive compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention relates to a method for treating uranium-containing waste water and belongs to the technical field of wet method metallurgy. The method comprises the following steps of adding a raffinate water phase into industrial uranium-containing waste water to adjust a pH value to 3-7, adding iron powder into the industrial uranium-containing waste water according to an industrial uranium-containing waste water-iron powder liquid-solid ratio of (0.5-15): 1g/L, putting the mixture into a supersonic wave reactor, carrying out supersonic treatment at a room temperature at a stirring rate of 120-180rpm for 5-15min, carrying out pumping filtration to obtain pretreated dischargeable clear liquid and uranium-containing waste residue, and storing the uranium-containing waste residue for follow-up uranium extraction treatment. The method utilizes the raffinate water phase produced by uranium processing to adjust a pH value of uranium-containing waste water to be treated, improves a removal rate of uranium in industrial uranium-containing waste water, realizes simultaneous treatment on uranium in the raffinate and effectively shares factory uranium treatment stress.
Description
Technical field
The present invention relates to a kind of method processing uranium-containing waste water, belong to technical field of wet metallurgy.
Background technology
Along with the fast development of China's nuclear energy, make the rush of demand of uranium fuel.China's Uranium generally adopts dissolved Rodon technique, creates a large amount of tailings water, CHARACTERISTICS OF TAILINGS SAND (barren rock).In factory except in uranium technical process, uranium chemical concentrate, after batching dissolution process, extracts the uranium of produced raffinate aqueous phase also containing higher concentration to the supernatant liquor after clarification, can not directly discharge, and increases the pressure of uranium processing enterprise except uranium process.Radioactive wastewater is mainly caused by wherein contained radionuclide the pollution of environment, if let alone to be discharged in environment, can cause extremely serious consequence to ecotope and human health.Uranium-containing waste water is the one of radwaste.
The problems such as the method for current process uranium-containing waste water mainly contains chemical precipitation method, ion exchange method, method of evaporation, absorption method, extraction process embrane method, microbial method, phytoremediation, permeable reactive barrier Treatment process and combination treatment etc., and ubiquity processing cost is high, water outlet uranium content is unstable or operation easier is large.There is investigator (Zhao Sufen, Shi Mengjie, An little Gang, He Caiting. the experimental study of Zero-valent Iron process uranium-containing waste water. Treatment of Industrial Water, 2011,7 (31)) experimental study has been carried out to zeroth order iron powder process uranium-containing waste water, used hydrochloric acid and sodium hydroxide adjust ph, after uranium-containing waste water process, can emission standard be reached, but it is large still to there is iron powder dosage, processing cost is high, and produce the radioactivity quantity of slag large, the storage for radioactivity slag brings the shortcomings such as great pressure; In addition, adding of eo-acid or alkali lye, increase acid consumption or alkaline consumption, not only add processing cost, also processing pressure is added to the process of uranium-containing waste water.
Summary of the invention
For above-mentioned prior art Problems existing and deficiency, the invention provides a kind of method processing uranium-containing waste water.The raffinate aqueous phase produced in the uranium course of processing is regulated the pH value of pending uranium-containing waste water by the method, improve the removal efficiency of industrial uranium-containing waste water uranium, the uranium in raffinate can be processed again simultaneously, effectively share factory's uranium processing pressure, the overall effective removal efficiency improving full factory uranium, alleviates environmental protection pressure greatly; Secondly, when utilizing ultrasonic wave to propagate in medium, the mechanical effect produced, cavatition and heat effect and produce a series of effects such as mechanics, calorifics and chemistry, ultrasonic technology is combined with Zero-valent Iron reduction technique, shorten the wastewater treatment time greatly, reduce zeroth order iron powder input amount, reduce the quantity of slag, reduce production cost and store up cost, a kind of integrated conduct method of the uranium-containing waste water degree of depth except uranium of highly effective and safe, realize environmental friendliness and the process efficiently of uranium-containing waste water, the present invention is achieved through the following technical solutions.
A kind of method processing uranium-containing waste water, its concrete steps are as follows: first in industrial uranium-containing waste water, add raffinate aqueous phase adjust ph to 3 ~ 7, then add iron powder according to the liquid-solid ratio of industrial uranium-containing waste water and iron powder for (0.5 ~ 15): 1g/L and be placed in ultrasound reactor, ultrasonication 5 ~ 15min under room temperature, stir speed (S.S.) are 120 ~ 180rpm condition, finally carry out can discharging clear liquid and uranium-bearing waste residue after suction filtration obtains process, uranium-bearing waste residue is waited for and follow-up is proposed uranium process after depositing.
Described industrial uranium-containing waste water comprises following component: uranium 50 μ g/L ~ 20000 μ g/L, pH value is 8 ~ 12.
Described raffinate aqueous phase extracts workshop section from CNNC 272 Uranium Industry Co., Ltd.'s production process, comprises following component: uranium 500 μ g/L ~ 20000 μ g/L, pH value is 0.1 ~ 1.
In described iron powder, Zero-valent Iron content is 50wt.% ~ 98wt.%.
Described hyperacoustic condition is ultrasonic power is 80 ~ 2000W.
Uranium content <50 μ g/L in clear liquid can be discharged after this process, reach " uranium processing specifies with the radio-protective of fuel making facility " (EJ1056-2005) emission standard.
The invention has the beneficial effects as follows: (1) the present invention adopts ultrasonic technology to combine with Zero-valent Iron reduction technique, shortens the wastewater treatment time greatly, reduce iron powder input amount, reduce the quantity of slag, reduce production cost and store up cost; (2) the present invention is in the process adopting Zero-valent Iron reduction uranium waste water, raffinate water is adopted to regulate the pH value of uranium-containing waste water, improve the removal efficiency of industrial uranium-containing waste water uranium, the uranium in raffinate can be processed again simultaneously, effectively share factory's uranium processing pressure, the overall effective removal efficiency improving full factory uranium, alleviates environmental protection pressure greatly.
Accompanying drawing explanation
Fig. 1 is present invention process schema.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment 1
As shown in Figure 1, the method of this process uranium-containing waste water, its concrete steps are as follows: first in industrial uranium-containing waste water, add raffinate aqueous phase adjust ph to 3, then be that 1:1g/L adds iron powder (in iron powder, Zero-valent Iron content is 75wt.%) and is placed in ultrasound reactor according to the liquid-solid ratio of industrial uranium-containing waste water and iron powder, ultrasonication 5min under room temperature, stir speed (S.S.) are 120rpm condition, finally carry out can discharging clear liquid and uranium-bearing waste residue after suction filtration obtains process, uranium-bearing waste residue is waited for and follow-up is proposed uranium process after depositing.
Wherein industrial uranium-containing waste water comprises following component: uranium 50.96 μ g/L, and pH value is 8; Raffinate aqueous phase comprises following component: uranium 5116.79 μ g/L, and pH value is 0.12; Hyperacoustic condition is ultrasonic power is 500W.
Can discharge uranium content in clear liquid after this process is 5.97 μ g/L, far below emission standard 50 μ g/L " uranium processing specifies with the radio-protective of fuel making facility " (EJ1056-2005).
Embodiment 2
As shown in Figure 1, the method of this process uranium-containing waste water, its concrete steps are as follows: first in industrial uranium-containing waste water, add raffinate aqueous phase adjust ph to 5, then be that 0.5:1g/L adds iron powder (in iron powder, Zero-valent Iron content is 50wt.%) and is placed in ultrasound reactor according to the liquid-solid ratio of industrial uranium-containing waste water and iron powder, ultrasonication 10min under room temperature, stir speed (S.S.) are 150rpm condition, finally carry out can discharging clear liquid and uranium-bearing waste residue after suction filtration obtains process, uranium-bearing waste residue is waited for and follow-up is proposed uranium process after depositing.
Wherein industrial uranium-containing waste water comprises following component: uranium 2772.23 μ g/L, and pH value is 9; Raffinate aqueous phase comprises following component: uranium 512.32 μ g/L, and pH value is 0.26; Hyperacoustic condition is ultrasonic power is 800W.
Can discharge uranium content in clear liquid after this process is 5.78 μ g/L, far below emission standard 50 μ g/L " uranium processing specifies with the radio-protective of fuel making facility " (EJ1056-2005).
Embodiment 3
As shown in Figure 1, the method of this process uranium-containing waste water, its concrete steps are as follows: first in industrial uranium-containing waste water, add raffinate aqueous phase adjust ph to 4, then be that 12:1g/L adds iron powder (in iron powder, Zero-valent Iron content is 80wt.%) and is placed in ultrasound reactor according to the liquid-solid ratio of industrial uranium-containing waste water and iron powder, ultrasonication 15min under room temperature, stir speed (S.S.) are 130rpm condition, finally carry out can discharging clear liquid and uranium-bearing waste residue after suction filtration obtains process, uranium-bearing waste residue is waited for and follow-up is proposed uranium process after depositing.
Wherein industrial uranium-containing waste water comprises following component: uranium 7512.75 μ g/L, and pH value is 10.16; Raffinate aqueous phase comprises following component: 16450.55 μ g/L, and pH value is 0.57; Hyperacoustic condition is ultrasonic power is 80W.
Can discharge uranium content in clear liquid after this process is 14.51 μ g/L, far below emission standard 50 μ g/L " uranium processing specifies with the radio-protective of fuel making facility " (EJ1056-2005).
Embodiment 4
As shown in Figure 1, the method of this process uranium-containing waste water, its concrete steps are as follows: first in industrial uranium-containing waste water, add raffinate aqueous phase adjust ph to 7, then be that 15:1g/L adds iron powder (in iron powder, Zero-valent Iron content is 98wt.%) and is placed in ultrasound reactor according to the liquid-solid ratio of industrial uranium-containing waste water and iron powder, ultrasonication 6min under room temperature, stir speed (S.S.) are 180rpm condition, finally carry out can discharging clear liquid and uranium-bearing waste residue after suction filtration obtains process, uranium-bearing waste residue is waited for and follow-up is proposed uranium process after depositing.
Wherein industrial uranium-containing waste water comprises following component: uranium 10107.64 μ g/L, and pH value is 11; Raffinate aqueous phase comprises following component: uranium 9995.63 μ g/L, and pH value is 0.73; Hyperacoustic condition is ultrasonic power is 1500W.
Can discharge uranium content in clear liquid after this process is 22.51 μ g/L, far below emission standard 50 μ g/L " uranium processing specifies with the radio-protective of fuel making facility " (EJ1056-2005).
Embodiment 5
As shown in Figure 1, the method of this process uranium-containing waste water, its concrete steps are as follows: first in industrial uranium-containing waste water, add raffinate aqueous phase adjust ph to 6, then be that 10:1g/L adds iron powder (in iron powder, Zero-valent Iron content is 80wt.%) and is placed in ultrasound reactor according to the liquid-solid ratio of industrial uranium-containing waste water and iron powder, ultrasonication 12min under room temperature, stir speed (S.S.) are 140rpm condition, finally carry out can discharging clear liquid and uranium-bearing waste residue after suction filtration obtains process, uranium-bearing waste residue is waited for and follow-up is proposed uranium process after depositing.
Wherein industrial uranium-containing waste water comprises following component: uranium 15997.34 μ g/L, and pH value is 12; Raffinate aqueous phase comprises following component: uranium 7589.45 μ g/L, and pH value is 0.95, and hyperacoustic condition is ultrasonic power is 2000W.
Can discharge uranium content in clear liquid after this process is 21.72 μ g/L, far below emission standard 50 μ g/L " uranium processing specifies with the radio-protective of fuel making facility " (EJ1056-2005).
By reference to the accompanying drawings the specific embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (5)
1. one kind processes the method for uranium-containing waste water, it is characterized in that concrete steps are as follows: first in industrial uranium-containing waste water, add raffinate aqueous phase adjust ph to 3 ~ 7, then add iron powder according to the liquid-solid ratio of industrial uranium-containing waste water and iron powder for (0.5 ~ 15): 1g/L and be placed in ultrasound reactor, ultrasonication 5 ~ 15min under room temperature, stir speed (S.S.) are 120 ~ 180rpm condition, finally carry out can discharging clear liquid and uranium-bearing waste residue after suction filtration obtains process, uranium-bearing waste residue is waited for and follow-up is proposed uranium process after depositing.
2. the method for process uranium-containing waste water according to claim 1, is characterized in that: described industrial uranium-containing waste water comprises following component: uranium 50 μ g/L ~ 20000 μ g/L, pH value is 8 ~ 12.
3. the method for process uranium-containing waste water according to claim 1, is characterized in that: described raffinate aqueous phase comprises following component: uranium 500 μ g/L ~ 20000 μ g/L, pH value is 0.1 ~ 1.
4. the method for process uranium-containing waste water according to claim 1, is characterized in that: in described iron powder, Zero-valent Iron content is 50wt.% ~ 98wt.%.
5. the method for process uranium-containing waste water according to claim 1, is characterized in that: described hyperacoustic condition is ultrasonic power is 80 ~ 2000W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410529994.6A CN104386865A (en) | 2014-10-10 | 2014-10-10 | Method for treating uranium-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529994.6A CN104386865A (en) | 2014-10-10 | 2014-10-10 | Method for treating uranium-containing waste water |
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| CN104386865A true CN104386865A (en) | 2015-03-04 |
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| CN201410529994.6A Pending CN104386865A (en) | 2014-10-10 | 2014-10-10 | Method for treating uranium-containing waste water |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036427A (en) * | 2015-07-01 | 2015-11-11 | 昆明理工大学 | Processing method of industrial uranium-containing wastewater |
| CN105217909A (en) * | 2015-10-29 | 2016-01-06 | 南京大学 | The method of prussiate in ultrasonic wave added Zero-valent Iron, hydrogen peroxide degraded mud |
| CN105810278A (en) * | 2016-05-23 | 2016-07-27 | 绍兴文理学院 | Purification detection and purification device of uranium-polluted underground water |
| CN106401510A (en) * | 2016-09-13 | 2017-02-15 | 中核通辽铀业有限责任公司 | Method for recycling well flushing waste water in in-situ leaching uranium exploration |
| CN108439633A (en) * | 2018-02-01 | 2018-08-24 | 兰州大学 | A method of the fluorine-containing uranium-containing waste water of processing high alkalinity simultaneously recycles uranium |
| CN109741849A (en) * | 2018-12-27 | 2019-05-10 | 中核四0四有限公司 | A kind of deep-purifying method of the uranium purifying conversion fluorine-containing waste liquid of uranium-bearing |
| CN111215026A (en) * | 2018-11-26 | 2020-06-02 | 西南科技大学 | Method for treating uranium-containing wastewater by using carbon nanotubes loaded with nanoscale zero-valent iron |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105036427A (en) * | 2015-07-01 | 2015-11-11 | 昆明理工大学 | Processing method of industrial uranium-containing wastewater |
| CN105217909A (en) * | 2015-10-29 | 2016-01-06 | 南京大学 | The method of prussiate in ultrasonic wave added Zero-valent Iron, hydrogen peroxide degraded mud |
| CN105217909B (en) * | 2015-10-29 | 2017-10-20 | 南京大学 | The method of cyanide in ultrasonic wave added Zero-valent Iron, hydrogen peroxide degraded mud |
| CN105810278A (en) * | 2016-05-23 | 2016-07-27 | 绍兴文理学院 | Purification detection and purification device of uranium-polluted underground water |
| CN105810278B (en) * | 2016-05-23 | 2018-05-29 | 绍兴文理学院 | A kind of purification detection purifier of uranium polluted underground water |
| CN106401510A (en) * | 2016-09-13 | 2017-02-15 | 中核通辽铀业有限责任公司 | Method for recycling well flushing waste water in in-situ leaching uranium exploration |
| CN106401510B (en) * | 2016-09-13 | 2019-01-08 | 中核通辽铀业有限责任公司 | The method that ground-dipping uranium extraction well-flushing waste water recycles |
| CN108439633A (en) * | 2018-02-01 | 2018-08-24 | 兰州大学 | A method of the fluorine-containing uranium-containing waste water of processing high alkalinity simultaneously recycles uranium |
| CN108439633B (en) * | 2018-02-01 | 2022-09-27 | 兰州大学 | Method for treating high-alkalinity fluorine-containing uranium-containing wastewater and recycling uranium |
| CN111215026A (en) * | 2018-11-26 | 2020-06-02 | 西南科技大学 | Method for treating uranium-containing wastewater by using carbon nanotubes loaded with nanoscale zero-valent iron |
| CN109741849A (en) * | 2018-12-27 | 2019-05-10 | 中核四0四有限公司 | A kind of deep-purifying method of the uranium purifying conversion fluorine-containing waste liquid of uranium-bearing |
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Application publication date: 20150304 |