WO2015025681A1 - 放射性廃液の処理方法及び放射性廃液処理装置 - Google Patents
放射性廃液の処理方法及び放射性廃液処理装置 Download PDFInfo
- Publication number
- WO2015025681A1 WO2015025681A1 PCT/JP2014/069898 JP2014069898W WO2015025681A1 WO 2015025681 A1 WO2015025681 A1 WO 2015025681A1 JP 2014069898 W JP2014069898 W JP 2014069898W WO 2015025681 A1 WO2015025681 A1 WO 2015025681A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radioactive
- waste
- liquid waste
- liquid
- radioactive liquid
- Prior art date
Links
Images
Classifications
-
- 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
- G21F9/12—Processing by absorption; by adsorption; by ion-exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C5/00—Separating dispersed particles from liquids by electrostatic effect
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/167—Measuring radioactive content of objects, e.g. contamination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/02—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids
- G01T7/04—Collecting means for receiving or storing samples to be investigated and possibly directly transporting the samples to the measuring arrangement; particularly for investigating radioactive fluids by filtration
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/24—Details of magnetic or electrostatic separation for measuring or calculating parameters, efficiency, etc.
Definitions
- the present invention relates to a radioactive waste liquid treatment method and a radioactive waste liquid treatment apparatus, and more particularly to a radioactive waste liquid treatment method and a radioactive waste liquid treatment apparatus suitable for removing radionuclides contained in a radioactive waste liquid containing particulate components such as soil. About.
- This adsorption treatment method is a treatment method in which ionic radionuclides are adsorbed and removed by an inorganic or organic adsorbent or an ion exchange resin.
- radioactive liquid waste generated at nuclear facilities For example, acidic radioactive liquid waste and alkaline radioactive liquid waste are conceivable.
- there is an appropriate pH range for exerting the adsorption performance depending on the adsorbent, there is an appropriate pH range for exerting the adsorption performance.
- the pH of the radioactive liquid waste is adjusted to acidic or alkaline according to the adsorbent, and then In some cases, the radionuclide contained in the radioactive liquid waste is adsorbed on the adsorbent.
- the radioactive liquid waste after the adsorption treatment is considered to have various pHs depending on the properties at the time of generation or the contained radionuclide and the selected adsorbent.
- radioactive waste liquid is passed through a container filled with an adsorbent, and ionic radionuclides contained in the radioactive waste liquid are adsorbed on the adsorbent and removed.
- the particulate matter contained in the radioactive waste liquid is removed by a filtration device.
- JP2013-57599A describes a method for treating radioactive liquid waste.
- Iron ferrocyanide is added into the container into which the radioactive liquid waste flows, and the radioactive cesium contained in the radioactive liquid waste is adsorbed on the iron ferrocyanide, and then a zeolite adsorbent is added to the radioactive liquid waste in the container.
- Radioactive strontium contained in the radioactive liquid waste is adsorbed on the zeolite adsorbent.
- an inorganic flocculant is added to the radioactive liquid waste.
- an aggregate of solid particles including iron ferrocyanide particles adsorbed with radioactive cesium and zeolite adsorbent particles adsorbed with radioactive strontium is formed, and this aggregate is settled and separated.
- a filtration device and an ion exchange device are used.
- An ultrafiltration membrane is used as a filtration device.
- the colloidal component contained in the radioactive liquid waste is removed by the ultrafiltration membrane, and then the ionic radionuclide contained in the radioactive liquid waste is removed by the ion exchange device.
- colloidal components contained in the radioactive waste liquid are removed by a filtration device (for example, an ultrafiltration membrane).
- the radioactive waste liquid is supplied to the filtration device after sodium hydroxide is added to the radioactive waste liquid and the pH of the radioactive waste liquid is adjusted to a predetermined value.
- the radioactive waste liquid from which the colloid has been removed by the filtration device is supplied to an adsorption tower packed with a titanate adsorbent. Since the titanate adsorbent easily adsorbs strontium, strontium contained in the radioactive waste liquid is removed in the adsorption tower.
- the salt may interfere with the radionuclide adsorption.
- JP 2013-170959A describes a method for treating a radioactive liquid waste, in which an oxidizing agent or a reducing agent is added to the radioactive liquid waste containing the radionuclide, and then the radionuclide is adsorbed and removed by the adsorbent.
- Japanese Patent Laid-Open No. 2013-170959 discloses a radioactive liquid waste that adds an oxidizing agent or a reducing agent to a radioactive liquid waste containing a radionuclide, then adds a pH adjuster, and then adsorbs and removes the radionuclide with the adsorbent.
- a treatment method and a treatment method of a radioactive waste solution in which a pH adjusting agent is added to a radioactive waste solution containing a radionuclide and then the radionuclide is adsorbed and removed by an adsorbent are described.
- the concentration of the radioactive nuclides in the treated water is required to be below the standard value.
- An example of the reference value is that the measurement result of the concentration of the radionuclide by the radiation measuring instrument of the specified specification is not more than the measurement lower limit value of the radiation measuring instrument.
- Radioactive liquid containing radionuclides may contain particulate matter such as soil, sand components, concrete fragments and plants.
- this radioactive waste liquid is once stored in a tank or the like, and a substance having a large particle size contained in the radioactive waste liquid is settled and removed in the tank. Thereafter, the radionuclide contained in the radioactive liquid waste from which the substance having a large particle size has been removed is removed by an adsorbent through a filtration operation or precipitated by adding a coagulating precipitant to the radioactive liquid waste.
- the inventors investigated the distribution of cesium-137 using a soil sample to which cesium-137, a radionuclide, was attached.
- the soil sample was suspended in water, and the water containing the soil sample was allowed to stand for a while to separate into a sediment component and a supernatant water. Thereafter, the supernatant water was filtered with a filter paper having different openings, and the concentrations of particles of 1 ⁇ m or more, fine particles (colloid) of 1 ⁇ m or less, and cesium-137 in the ionic component in the supernatant water were measured.
- particle components, fine particles, and colloidal components can be removed by an installed ultrafiltration device.
- the outer filtration membrane has a small pore size, and when removing a large amount of particle components, the ultrafiltration membrane may be clogged.
- a clogging prevention device is provided on the ultrafiltration membrane.
- the clogging prevention device has a physical mechanism for the ultrafiltration membrane, such as a vibration mechanism that vibrates the ultrafiltration membrane and a rotation mechanism that rotates the ultrafiltration membrane.
- a physical mechanism for the ultrafiltration membrane such as a vibration mechanism that vibrates the ultrafiltration membrane
- a rotation mechanism that rotates the ultrafiltration membrane.
- radionuclide contained in the radioactive liquid waste there is a single chemical form, but there are also some that exist in multiple chemical forms.
- the radionuclide contained in the radioactive liquid waste containing salt is the same element, it tends to exist in a plurality of chemical forms.
- the electric charge held by the difference in a chemical form differs. That is, it may be positive, negative, or neutral. For this reason, in order to separate and remove a certain type of radionuclide, it is necessary to prepare a plurality of types of adsorbents.
- the concentration of the radionuclide contained in the radioactive liquid waste is extremely small, it is difficult to measure the chemical form of the radionuclide by chemical analysis or the like in advance. For this reason, it is not easy to select the adsorbent used for separation corresponding to each chemical form of a kind of radionuclide.
- a first object of the present invention is to provide a method for treating a radioactive waste liquid that can reduce radioactive substances from the radioactive waste liquid to a measurement lower limit value or less with a simple apparatus configuration while reducing the amount of generated radioactive waste.
- a second object of the present invention is to provide a radioactive waste liquid treatment method and a radioactive waste liquid capable of adjusting the final pH of the radioactive waste liquid to a neutral region (pH 4 to 9) while suppressing the addition of a treatment process and an increase in the radioactive waste. It is to provide a processing apparatus.
- a third object of the present invention is to provide a radioactive waste liquid treatment method and a radioactive waste liquid treatment apparatus capable of further improving the removal efficiency of radionuclides contained in the radioactive waste liquid.
- Particulate matter with a particle size larger than that of colloidal material is removed with a filtration device, colloidal material is removed with an electrostatic filter, and radioactive material is removed with an adsorption device.
- the amount of generation can be reduced, and radioactive substances can be removed up to the lower limit of measurement.
- a feature of the second invention for achieving the second object is that a colloidal substance, a particulate substance having a particle size larger than the colloidal substance, and a radioactive waste liquid containing the radioactive substance are supplied to a filtration device to form particles.
- the particulate matter is removed by the filtration device, the colloidal material contained in the radioactive waste liquid discharged from the filtration device is removed, and the radioactive waste liquid from which the colloidal material has been removed is supplied to the first adsorption device and is contained in the radioactive waste liquid.
- the radionuclide is removed by the first adsorption device, and the radioactive waste liquid discharged from the first adsorption device is disposed downstream of the first adsorption device, and is filled with an adsorbent carrying an oxine group on the surface. To supply to the adsorption device.
- the radioactive waste liquid discharged from the first adsorbing device is supplied to the second adsorbing device, which is disposed downstream of the first adsorbing device and is filled with an adsorbent carrying an oxine group on its surface, so that the pH is adjusted. Without adding the chemical to be added to the radioactive liquid waste, the pH of the radioactive liquid waste can be adjusted to a range of 4 to 9, and the amount of radioactive waste generated can be reduced.
- At least one of an oxidizing agent, a pH adjusting agent and a reducing agent is injected into the radioactive liquid waste from which radionuclide ions have been removed by the first adsorption device, and the oxidizing agent, the pH adjusting agent and the reducing agent are injected.
- the radionuclide ions generated in the radioactive waste liquid by the injection of at least one of the above are removed by the adsorbent in the third adsorption device, and the radioactive waste liquid discharged from the third adsorption device is supplied to the second adsorption device. Is desirable.
- At least one of the oxidizing agent, the pH adjusting agent, and the reducing agent is injected into the radioactive waste liquid from which the ions have been removed by the first adsorption device, and at least one of the oxidizing agent, the pH adjusting agent, and the reducing agent. Since the radionuclide ions generated in the radioactive liquid waste by one injection are removed by the adsorbent in the second adsorption device, the removal efficiency of the radionuclide contained in the radioactive liquid waste can be further improved.
- a feature of the third invention for achieving the third object described above is that a radioactive liquid waste containing a radionuclide is supplied to the first adsorption device, and ions of the radionuclide contained in the radioactive liquid waste are adsorbed in the first adsorption device. At least one of an oxidizing agent, a pH adjusting agent and a reducing agent is injected into the radioactive liquid waste removed from the first adsorption device, and at least one of the oxidizing agent, the pH adjusting agent and the reducing agent is injected The purpose is to remove the radionuclide ions generated in the radioactive liquid waste by the injection with the adsorbent in the second adsorption device.
- At least one of an oxidizing agent, a pH adjusting agent and a reducing agent is injected into the radioactive liquid waste from which ions have been removed by the first adsorption device, and at least one of the oxidizing agent, the pH adjusting agent and the reducing agent is injected. Since the radionuclide ions generated in the radioactive liquid waste are removed by the adsorbent in the second adsorption device, the removal efficiency of the radionuclide contained in the radioactive liquid waste can be further improved.
- the first invention it is possible to remove radioactive substances from a radioactive waste liquid to a measurement lower limit value or less with a simple apparatus configuration while reducing the amount of radioactive waste generated.
- the second invention it is possible to adjust the pH of the radioactive waste liquid from the radioactive waste liquid to near neutrality with a simple apparatus configuration while reducing the amount of generated radioactive waste.
- the radionuclide in the radioactive liquid waste can be efficiently removed by the adsorbent.
- FIG. 1 It is a block diagram of the radioactive waste liquid processing apparatus used for the processing method of the radioactive waste liquid of Example 1 which is one suitable Example of this invention. It is explanatory drawing which shows the amount of radioactive waste generated with the processing method of the radioactive waste liquid of Example 1. FIG. It is explanatory drawing which shows the removal rate for every chemical form of radioactive ruthenium contained in each radioactive waste liquid from which pH differs, and the chemical form of radioactive ruthenium. It is a block diagram of the radioactive waste liquid processing apparatus used for the processing method of the radioactive waste liquid of Example 2 which is another suitable Example of this invention.
- the inventors conducted a test to examine the pH change of the radioactive liquid waste accompanying the adsorption of the radionuclide in the process of developing a process for adsorbing various radionuclide ions. This is done with the assumption that depending on the combination of the adsorbents, the adsorption process of the radionuclide with one adsorbent in the previous stage may affect the adsorption performance of another radionuclide with another adsorbent in the subsequent stage. It was a test.
- the radioactive liquid waste is passed through a packed bed of oxine-impregnated activated carbon known to adsorb transition element ions, so that the pH of the radioactive liquid waste is 4 to 4%. Found to be adjusted within the range of 9.
- the inventors have adopted an adsorption device that adsorbs and removes radionuclides contained in radioactive waste liquid from an adsorption tower packed with activated carbon impregnated with oxine. It has been found that the pH of the radioactive liquid waste from which the radionuclide has been removed can be adjusted within the range of 4 to 9 by disposing it downstream of the nuclei, leading to the creation of the present invention.
- radioactive liquid waste containing cations such as radioactive cesium and strontium, anions such as radioactive antimony, and transition metal ions such as radioactive cobalt was treated.
- radioactive cesium and radioactive strontium for example, natural zeolite, artificial zeolite or silicotitanate is used.
- radioactive antimony and the like for example, using a cerium hydroxide-containing adsorbent, for selectively adsorbing radioactive heavy metals (for example, transition metal and rare earth ions), for example, oxine-impregnated activated carbon Is used.
- Table 1 shows the adsorbents that can be used when the above radioactive ions are removed by adsorption, and the pH of each test water before and after passing through the packed bed of this adsorbent.
- Test water-1, test water-2 and test water-3 are all simulated water of radioactive liquid waste.
- the numerical values in parentheses () indicate the pH values of test water-1, test water-2, and test water-3 at the inlet of the packed bed of the adsorbent.
- Each numerical value in parentheses in each column of “Cs, Sr removal”, “anion removal” and “heavy metal removal” is a pH value after each test water passes through the adsorbent packed bed.
- the pH of each test water can be adjusted to a range of 4 to 9 by disposing an oxine-impregnated coal packed bed in the final stage of radionuclide adsorption.
- the inventors examined not only the basic examination described above but also issues and countermeasures from the viewpoint of equipment systems. Simply by arranging the adsorption tower filled with activated carbon impregnated with oxine, the pH of the radioactive liquid waste became neutral in the adsorption tower, so that dissolved components contained in the radioactive liquid waste were deposited in the adsorption tower and blocked. There is concern about waking up. As a countermeasure, it is necessary to arrange a filtration device and a colloid removal device before the adsorption step so that the system configuration can reduce the solids precipitation potential as much as possible.
- the inventors removed the radionuclide contained in the radioactive waste liquid with the preceding adsorption device supplied with the radioactive waste liquid from which the colloidal material was removed, and the radioactive waste liquid discharged from the previous adsorption device. Is supplied to a subsequent adsorption device filled with an adsorbent carrying an oxine group on its surface, whereby the pH of the radioactive liquid waste discharged from the subsequent adsorption device can be adjusted within a range of 4 to 9. 1 new finding was found.
- Cation exchange resin, chelate resin, anion exchange resin, etc. are used for the removal of the radionuclide from the radioactive liquid waste using the adsorbent.
- These adsorbents have a high removal performance for ions having a positive charge, ions having a negative charge, and ions forming a complex.
- the adsorbent has relatively low removal performance for colloids and neutral dissolved species.
- the inventors diligently studied a method for efficiently removing the radionuclide from the radioactive liquid waste using the adsorbent even when the type and concentration of the radionuclide and the composition of the radioactive liquid waste are unknown.
- the radionuclide contained in the radioactive liquid waste is passed through the adsorbent layer and removed by the adsorbent in the adsorbent layer, and then, at least one of the oxidizing agent, the reducing agent, and the pH adjusting agent.
- ruthenium one of the radionuclides. It is known that a radioisotope of ruthenium, for example Ru-106, takes a plurality of oxidation numbers and takes a plurality of chemical forms depending on the properties of the radioactive liquid waste.
- the inventors changed the pH of seawater containing ruthenium to acidic (pH 2), neutral (pH 7), and alkaline (pH 12), and the removal rate by the adsorbent of each ruthenium having different chemical forms contained in sea water at each pH. Asked.
- FIG. 2 shows the removal rate of each chemical form of ruthenium contained in the seawater at each pH and the ruthenium of each chemical form contained in the seawater at each pH by the adsorbent.
- ruthenium exists mainly as cations (Ru (OH) 2 + and the like) and neutral dissolved species (Ru (OH) 4 and the like) and is difficult to remove due to the adsorbent.
- the proportion of dissolved species is about 74%.
- acidic (pH 2) seawater about 58% of ruthenium is present as a cation (such as RuCl 2 + ) and about 12% as an anion (such as RuCl 4 ⁇ ). 3 ) is about 30%.
- Ru (OH) 4 In alkaline seawater, almost 100% are ruthenium neutral dissolved species (Ru (OH) 4 ).
- the pH of the radioactive liquid waste is 2
- the adsorption treatment of ruthenium contained in the radioactive liquid waste is performed, about 30% of the neutral dissolved species remains in the radioactive liquid waste.
- the radionuclide contained in the radioactive liquid waste can be efficiently removed by the adsorbent.
- Examples of usable reducing agents include ascorbic acid, hydrazine, and oxalic acid.
- Examples of the pH adjuster include acid solutions such as hydrochloric acid, nitric acid, sulfuric acid, and phosphoric acid, and alkaline solutions such as sodium hydrogen carbonate, sodium carbonate, sodium hydroxide, and potassium hydroxide.
- the inventors removed the radionuclide contained in the radioactive liquid waste with the preceding adsorption device, and added the oxidizing agent, the reducing agent, and the pH adjuster to the radioactive waste liquid discharged from the previous adsorption device. At least one drug is injected, and this radioactive waste liquid is again passed through the adsorbent layer by the injection of the drug, and the radionuclide ions generated in the radioactive waste liquid are removed by a subsequent adsorption device.
- a second new finding has been found that the removal efficiency of radionuclides contained in the radioactive liquid waste can be further improved.
- Example 1 A method for treating radioactive liquid waste according to Example 1, which is a preferred example of the present invention, will be described with reference to FIG. Furthermore, the radioactive waste liquid processing apparatus used for the processing method of this radioactive waste liquid is demonstrated using FIG.
- the radioactive liquid waste treatment apparatus 1 used in this embodiment includes a filtration device 2, a colloid removal device 3, and an adsorption device 5.
- the filtration device 2 is a device for physically filtering the particle components contained in the radioactive waste liquid, and has a cartridge filter (or pleat filter) filled with a filter material inside.
- the filtration device 2 removes particles of about 1 ⁇ m or more contained in the radioactive liquid waste.
- the colloid removing device 3 has a plurality of electrostatic filters 4 installed in the casing.
- the adsorption device 5 has a plurality of adsorption towers 6. Adsorbents selected according to the type of radionuclide contained in the radioactive liquid waste are packed in each adsorption tower 6 separately.
- each adsorption tower 6 of the adsorption device 5 for example, natural zeolite, artificial zeolite and silicotitanate are selectively used to selectively adsorb radioactive cesium and radioactive strontium.
- adsorb for example, a hydrous cerium-containing adsorbent is used, and in order to selectively adsorb radioactive heavy metals, for example, oxine-impregnated activated carbon is used.
- the adsorbent for adsorbing the radionuclide used in the adsorption device 5 at least one of zeolite, ferrocyanide, titanate compound, titanate compound, ion exchange resin, chelate resin, activated carbon and impregnated activated carbon is used.
- Radioactive waste liquid containing particles of 1 ⁇ m or more, a negatively charged colloid, and two or more types of radionuclides drive a radioactive waste liquid supply pipe 7 by driving a pump (not shown) provided in the radioactive waste liquid supply pipe 7. Is supplied to the filtration device 2. Particles of 1 ⁇ m or more contained in the radioactive liquid waste are removed by the cartridge filter in the filtration device 2. The radioactive waste liquid discharged from the filtration device 2 is supplied to the colloid removal device 3 through the connection pipe 8.
- the colloid contained in the radioactive liquid waste is removed by each electrostatic filter 4 in the colloid removing device 3. Fine particles of less than 1 ⁇ m are called colloids.
- the surface of the colloid is positively or negatively charged. Whether the colloid is positively or negatively charged depends on the material forming the colloid and the surface structure. In general, colloids derived from soil components are often negatively charged.
- each electrostatic filter 4 in the colloid removing device 3 is positively charged when energized, the negatively charged colloid derived from the soil component contained in the radioactive waste liquid is electrostatically charged. It is attached to the surface of the filter 4 and removed. It is not necessary to adjust the pH of the radioactive liquid waste supplied to the colloid removing device 3.
- colloidal particles having a particle size in the range of about 1 nm or more and less than 1 ⁇ m are removed.
- the radioactive waste liquid from which the colloidal particles have been removed is supplied to the adsorption tower 6 of the adsorption device 5 through the connection pipe 9.
- the radioactive liquid waste supplied to the adsorption device 5 does not contain particle components and colloids.
- radioactive nuclides such as radioactive cesium, radioactive strontium and radioactive antimony contained in the radioactive liquid waste are ions.
- each radionuclide such as radioactive cesium, radioactive strontium, and radioactive iodine contained in the radioactive liquid waste is separately adsorbed by the adsorbent 6 and removed.
- the amount of radioactive waste generated by the radioactive waste liquid treatment method of this example was evaluated.
- the amount of radioactive waste generated by the method for treating radioactive waste liquid of this example is shown in FIG.
- the amount of waste generated in the known method of treating radioactive waste liquid by adding a coagulating precipitant was also evaluated, and is shown in FIG.
- the total amount of radioactive waste generated in each of the filtration step, the adsorption step with the adsorbent, and the coagulation sedimentation step (sludge generation) with the addition of the coagulation precipitant increases.
- the total amount of the filter medium 2 (cartridge filter, etc.), the waste filter of each electrostatic filter 4 and the waste adsorbent of the adsorption device 5 that becomes radioactive waste is agglomerated sedimentation.
- the amount of radioactive waste generated was reduced to 1/3 or less of the total amount of radioactive waste generated by the known methods for treating radioactive waste by adding agents.
- the amount of radioactive waste generated can be reduced with a simple device configuration including the filtration device 2, the colloid removal device 3 using the electrostatic filter 4, and the adsorption device 5. It can be removed up to the lower limit of measurement.
- the radioactive waste generated by the processing method of the radioactive waste liquid of this embodiment is the filter medium of the filtration device 2, the waste filter of the electrostatic filter, and the waste adsorbent of the adsorption device 5, and no precipitation occurs, and the radioactive waste Can be reduced.
- a colloid removing device having a negatively charged electrostatic filter may be used instead of the colloid removing device 3.
- Example 2 A method for treating a radioactive liquid waste according to Example 2 which is another preferred embodiment of the present invention will be described with reference to FIG. Furthermore, the radioactive waste liquid processing apparatus used for the processing method of this radioactive waste liquid is demonstrated using FIG.
- the radioactive liquid waste treatment apparatus 1A used in the present embodiment has a configuration in which the colloid removal apparatus 3A is added to the radioactive liquid waste treatment apparatus 1.
- the colloid removing device 3A has a plurality of electrostatic filters 4A installed in the casing.
- the colloid removing device 3A is connected to the colloid removing device 3 by a connection pipe 8A, and further connected to an adsorption tower 6 located at the most upstream side in the adsorption device 5 by a connection pipe 9.
- each electrostatic filter 4A of the colloid removing device 3A is negatively charged by energization.
- the other configuration of the radioactive liquid waste treatment apparatus 1A is the same as that of the radioactive liquid waste treatment apparatus 1.
- the electrostatic filter 4 of the colloid removing device 3 is positively charged.
- the method for treating the radioactive liquid waste according to the present embodiment which is performed using the radioactive liquid waste treatment apparatus 1A, will be specifically described.
- the radioactive liquid waste generated in the boiling water nuclear power plant is processed. Differences from the first embodiment will be mainly described.
- Radioactive liquid containing 1 ⁇ m or more particles, negatively charged colloid, positively charged colloid and two or more types of radionuclides, and two or more types of radionuclides 7 is supplied to the filtration device 2, and is further supplied to the colloid removing device 3 through the connection pipe 8. Particles of 1 ⁇ m or more and negatively charged colloid are removed by the filtration device 2 and the colloid removal device 3.
- the radioactive liquid waste discharged from the colloid removing device 3 is supplied to the colloid removing device 3A through the connection pipe 8A.
- Each electrostatic filter 4A of the colloid removing device 3A is negatively charged. For this reason, the positively charged colloid contained in the radioactive liquid waste adheres to each negatively charged electrostatic filter 4A and is removed from the radioactive liquid waste.
- the radioactive liquid waste discharged from the colloid removing device 3A is supplied to each adsorption tower 6 of the adsorption device 5, and each radionuclide contained in the radioactive liquid waste is removed as in the first embodiment.
- Example 2 can obtain each effect produced in Example 1. Further, in this embodiment, since the colloid removing device 3 using the colloid removing device 3 provided with the positively charged electrostatic filter 4 and the colloid removing device 3A provided with the negatively charged electrostatic filter 4A are used as the colloid removing device. The negatively charged colloid and the positively charged colloid contained in the waste liquid can be removed, and the load on the adsorption device 5 in the subsequent stage can be reduced.
- the radioactive waste liquid treatment apparatus 1B has a configuration in which a radiation detector 12 and a bypass pipe 15 are added to the radioactive waste liquid treatment apparatus 1.
- the on-off valve 14 is provided in the connection pipe 9, and the radiation detector 12 is disposed on the connection pipe 9 side upstream of the on-off valve 14.
- One end of the bypass pipe 15 provided with the on-off valve 16 is connected to the connection pipe 9 between the colloid removing device 3 and the on-off valve 14.
- the other end of the bypass pipe 15 is connected to the discharge pipe 11.
- Other configurations of the radioactive liquid waste treatment apparatus 1B are the same as those of the radioactive liquid waste treatment apparatus 1.
- the method for treating the radioactive liquid waste according to the present embodiment which is performed using the radioactive liquid waste treatment apparatus 1B, will be specifically described.
- the radioactive liquid waste generated in the boiling water nuclear power plant is processed. Differences from the first embodiment will be mainly described.
- a radioactive liquid waste containing particles of 1 ⁇ m or more, a negatively charged colloid and two or more types of radionuclides is supplied to the filtration device 2 through the radioactive waste liquid supply pipe 7 and further supplied to the colloid removal device 3. Particles of 1 ⁇ m or more contained in the radioactive liquid waste are removed by the filtering device 2, and the negatively charged colloid is removed by the electrostatic filter 4 of the colloid removing device 3.
- the radiation detector 12 measures the radioactivity concentration of the radioactive liquid waste discharged from the colloid removing device 3 and flowing in the connection pipe 9 upstream from the connection point between the connection pipe 9 and the bypass pipe 15.
- the on-off valve 14 is opened and the on-off valve 16 is closed, and the radioactive waste liquid discharged from the colloid removing device 3 is adsorbed.
- Each adsorption tower 6 of the adsorption device 5 supplied to the apparatus 5 adsorbs and removes each ionic radionuclide contained in the radioactive waste liquid separately.
- the radioactivity concentration of the treated water discharged from the adsorption device 5 to the discharge pipe 11 after each radionuclide is removed by the adsorption device 5 is reduced below the measurement lower limit value of the radiation detector 12.
- the on-off valve 16 When the radioactive concentration of the radioactive liquid waste flowing through the connection pipe 9 measured by the radiation detector 12 is below the measurement lower limit value of the radiation detector 12, the on-off valve 16 is opened and the on-off valve 14 is closed. The radioactive waste liquid flowing in the connection pipe 9 is guided to the discharge pipe 11 through the bypass pipe 15. At this time, radioactive waste liquid flowing in the connection pipe 9 and having a measurement lower limit value or less is not supplied to the adsorption device 5.
- the opening and closing of the on-off valves 14 and 16 based on the radioactivity concentration measured by the radiation detector 12 is performed manually or automatically.
- the on-off valves 14 and 16 are manually opened and closed, the radioactivity concentration measured by the radiation detector 12 is displayed on a display device (not shown), and the on-off valves 14 and 16 are viewed by an operator who sees the displayed radioactivity concentration. Is opened and closed.
- a control device (not shown) that inputs the radioactivity concentration measured by the radiation detector 12 opens and closes the on-off valves 14 and 16.
- the radiation detector 12 measures radiation (for example, alpha rays, beta rays, gamma rays, and X-rays) emitted by radionuclides contained in the radioactive liquid waste, and is, for example, an ionization chamber, a scintillation type detector, or a semiconductor type detector. is there.
- the radioactivity measured by the radiation detector 12 may be one type or two or more types.
- This example can obtain each effect produced in Example 1. Further, when the treated water does not contain ionic radioactive substances, the treated water is not supplied to the adsorption device 5, so treated water by elution of radionuclides from the adsorbent in each adsorption tower 6 when the treated water passes through the adsorption device 5. Re-contamination can be avoided, and the performance deterioration of the adsorbent due to avoiding unnecessary water flow can be reduced.
- the colloid removal apparatus 2 is connected to the colloid removal apparatus 2 by the connection pipe 8A via the connection pipe 8A, and the colloid removal apparatus 2A is provided with the connection pipe 9 in the same manner as the radioactive liquid waste treatment apparatus 1A. Also good.
- the radiation detector 12 measures the radioactivity concentration of the radioactive liquid waste discharged from the colloid removing device 2A. When the measured radioactivity concentration is below the measurement lower limit value of the radiation detector 12, the on-off valve 16 is opened and the on-off valve 14 is closed. When the measured radioactivity concentration is larger than the measurement lower limit value, the on-off valve 14 is opened and the on-off valve 16 is closed.
- each radioactive liquid waste of Examples 1 to 3 can also be applied to the treatment of radioactive liquid waste generated in a pressurized water nuclear plant.
- Embodiments 4 and 5 which are other embodiments of the present invention reflecting the first new knowledge obtained by the inventors will be described below.
- Example 4 A method for treating the radioactive liquid waste of Example 4, which is another preferred example of the present invention based on the above knowledge, will be described with reference to FIG. Furthermore, the radioactive waste liquid processing apparatus used for the processing method of this radioactive waste liquid is demonstrated using FIG.
- the radioactive liquid waste treatment apparatus 1C used in the present embodiment includes a filtration device 2, a colloid removal device 3, an adsorption device (first adsorption device) 5, and an adsorption tower (second adsorption device) 13.
- the filtration device 2 is a device for physically filtering the particle components contained in the radioactive waste liquid, and has a cartridge filter (or pleat filter) filled with a filter material inside.
- the filtration device 2 removes particles of about 1 ⁇ m or more contained in the radioactive liquid waste.
- the colloid removing device 3 has a plurality of electrostatic filters 4 installed in the casing.
- the adsorption device 5 has a plurality of adsorption towers 6.
- Adsorbents selected according to the type of radionuclide contained in the radioactive liquid waste are packed in each adsorption tower 6 separately.
- a radioactive waste liquid supply pipe 7 is connected to the filtration device 2.
- the filtration device 2 and the colloid removal device 3 are connected by a connection pipe 8.
- the adsorption tower 6 located on the most upstream side is connected to the colloid removing apparatus 3 by a connection pipe 9.
- Each adsorption tower 6 in the adsorption device 5 is sequentially connected by a pipe 10.
- An adsorption tower 13 disposed downstream of the adsorption device 5 and filled with activated carbon impregnated with oxine is connected to the adsorption tower 6 located most downstream in the adsorption device 5 by a pipe 17.
- Oxin-impregnated activated carbon is an adsorbent supported on the surface of activated carbon having an oxine group as a carrier.
- a discharge pipe 11 is connected to the adsorption tower 13.
- each adsorption tower 6 of the adsorption device 5 for example, natural zeolite, artificial zeolite and silicic titanic acid are selectively used to selectively adsorb radioactive cesium and radioactive strontium.
- adsorb for example, a hydrous cerium-containing adsorbent is used, and in order to selectively adsorb radioactive heavy metals, for example, oxine-impregnated activated carbon is used.
- At least one of zeolite, ferrocyanide, titanate compound, titanate compound, ion exchange resin, chelate resin, activated carbon and impregnated activated carbon is selected as the adsorbent for adsorbing the radionuclide used in the adsorption device 5.
- the adsorption tower 13 filled with the activated carbon impregnated with oxine is disposed downstream of the adsorption device 5.
- the particles of 1 ⁇ m or more contained in the radioactive liquid waste are removed by the cartridge filter in the filtration device 2.
- the radioactive waste liquid discharged from the filtration device 2 is supplied to the colloid removal device 3 through the connection pipe 8.
- the colloid contained in the radioactive liquid waste is removed by each electrostatic filter 4 in the colloid removing device 3. Fine particles of less than 1 ⁇ m are called colloids.
- the colloid contains a radionuclide (such as radiocesium, radiostrontium and radioantimony), and the removal of the colloid by each electrostatic filter 4 also removes the radionuclide contained in the colloid.
- the surface of the colloid is positively or negatively charged. Whether the colloid is positively or negatively charged depends on the material forming the colloid and the surface structure. For example, colloids derived from soil components are often negatively charged.
- each electrostatic filter 4 in the colloid removing device 3 is positively charged, and the negatively charged colloid contained in the radioactive waste liquid is attached to the surface of each electrostatic filter 4. Removed. It is not necessary to adjust the pH of the radioactive liquid waste supplied to the colloid removing device 3.
- colloidal particles having a particle size in the range of about 1 nm or more and less than 1 ⁇ m are removed.
- the radioactive waste liquid from which the colloidal particles have been removed is supplied to the adsorption tower 6 of the adsorption device 5 through the connection pipe 9.
- the radioactive liquid waste supplied to the adsorption device 5 does not contain particle components and colloids.
- radioactive nuclides such as radioactive cesium, radioactive strontium and radioactive antimony contained in the radioactive liquid waste are ions.
- each radionuclide such as radioactive cesium, radioactive strontium, and radioactive iodine contained in the radioactive liquid waste is separately adsorbed and removed by the adsorbent in each adsorption tower 6.
- Transition metal ions such as cobalt remaining in the radioactive waste liquid discharged from the adsorption device 5 and rare earth metal element ions such as bam and cesium are adsorbed and removed by the oxine-impregnated activated carbon in the adsorption tower 13.
- the pH of the radioactive liquid waste is adjusted to neutral (pH 4 to 9).
- the pH of the treated water discharged from the adsorption tower 13 to the discharge pipe 11 is adjusted (in the range of pH 4 to 9).
- Each adsorption tower 6 of the adsorption device 5 is filled with a corresponding adsorbent in an amount capable of sufficiently adsorbing the total amount of each radionuclide contained in the radioactive liquid waste.
- emitted from the adsorption tower 13 to the discharge pipe 11 becomes below a measurement lower limit.
- the treated water discharged from the adsorption device 5 is supplied to and stored in a storage tank (not shown) through the discharge pipe 11.
- the amount of radioactive waste generated can be reduced with a simple device configuration including the filtration device 2, the colloid removal device 3 using the electrostatic filter 4, and the adsorption device 5. It can be removed up to the lower limit of measurement. Furthermore, by arranging the adsorption tower 13 filled with oxine-impregnated activated carbon downstream of the adsorption device 5, the pH of the radioactive liquid waste can be adjusted to 4 to 9 without introducing a chemical for adjusting the pH into the radioactive liquid waste. Can be adjusted to the range.
- Example 5 which is another preferred embodiment of the present invention, reflecting the first new knowledge obtained by the inventors in the above-mentioned Example 4, is shown in FIG. It explains using.
- the radioactive waste liquid treatment apparatus 1D used in the method for treating radioactive waste liquid of the present embodiment is the same as the adjustment tank (liquidity adjustment unit) 18 and pH adjuster in the radioactive waste liquid treatment apparatus 1C used for the treatment method of radioactive waste liquid of Example 4. It has the structure which added the supply apparatus 19 and the adsorption
- An adjustment tank 18 provided with a stirring device (not shown) therein is connected to the adsorption tower 6 located most downstream in the adsorption device 5 by a pipe 22.
- the pH adjusting agent supply device 19 has a pH adjusting agent tank 20 and a pH adjusting agent supply pipe 21, and the pH adjusting agent tank 20 is connected to the adjusting tank 18 by a pH adjusting agent supply pipe 21 provided with an open / close valve (not shown). Connected.
- the pH adjusting agent tank 20 is filled with a hydrochloric acid aqueous solution that is a pH adjusting agent.
- the adsorption device 5B has a plurality of adsorption towers 6B.
- the adsorbent selected according to the type of radionuclide contained in the radioactive liquid waste is separately packed in each adsorption tower 6B.
- the pipe 23 connected to the adjustment tank 18 is connected to the adsorption tower 6B located most upstream in the adsorption device 5B.
- Each adsorption tower 6B in the adsorption device 5B is sequentially connected by a pipe 10B.
- the adsorption tower 13 filled with the activated carbon impregnated with oxine is arranged downstream of the adsorption device 5B, and is connected to the adsorption tower 6B located most downstream in the adsorption device 5B by the pipe 17.
- a discharge pipe 11 is connected to the adsorption tower 13.
- Each adsorbent layer in each adsorption tower 6B is separately filled with an adsorbent selected according to the radionuclide to be removed by adsorption.
- an adsorbent selected according to the radionuclide to be removed by adsorption In order to selectively adsorb radioactive cesium and radioactive strontium, for example, natural zeolite, artificial zeolite and silicic titanic acid are used, and in order to selectively adsorb radioactive antimony and the like, for example, a hydrous cerium-containing adsorbent is used. Use.
- an adsorbent layer of a certain adsorption tower 2A is filled with ion exchange resins (cation exchange resin and anion exchange resin).
- the radioactive liquid waste includes, for example, transition metals such as ruthenium, technetium and niobium, alkali metals such as cesium, alkaline earth metals such as strontium, rare earth elements such as cerium, halogens such as antimony, tellurium and iodine, and carbon, Contains one or more radionuclide of non-metallic elements such as boron.
- transition metals such as ruthenium, technetium and niobium
- alkali metals such as cesium
- alkaline earth metals such as strontium
- rare earth elements such as cerium
- halogens such as antimony, tellurium and iodine
- carbon Contains one or more radionuclide of non-metallic elements such as boron.
- the radioactive liquid waste containing a plurality of radionuclides is sequentially supplied to the filtration device 2 and the colloid removal device 3 as in the fourth embodiment. Particles of 1 ⁇ m or more contained in the radioactive liquid waste are removed by the filtration device 2. Then, when the radioactive waste liquid discharged
- ruthenium which is a kind of radionuclide, is a cation (such as Ru (OH) 2 + ) and neutral dissolved species (Ru) in the radioactive liquid waste. (OH) 4 etc.).
- Ruthenium cations (Ru (OH) 2 + and the like) are adsorbed and removed in the corresponding adsorption tower 6 while the radioactive liquid waste flows through the adsorption device 5.
- Ruthenium neutral dissolved species (such as Ru (OH) 4 ) flow into the adjustment tank 18 without being removed by the adsorption device 5.
- the aqueous hydrochloric acid solution in the pH adjusting agent tank 20 is injected into the radioactive waste liquid in the adjusting tank 18 through the pH adjusting agent supply pipe 21.
- the radioactive waste liquid in which ozone is dissolved and the hydrochloric acid aqueous solution are mixed in the adjustment tank 18 by the stirring device.
- Ruthenium neutral dissolved species (Ru (OH) 4 ) which was not converted to ruthenium cations by ozone gas injection, adjusts the radioactive liquid waste to acidic (for example, pH 2) by injection of hydrochloric acid aqueous solution.
- Radionuclides other than ruthenium contained in the radioactive liquid waste are also converted into cations and anions.
- a radioactive liquid waste containing cations, anions and neutral dissolved species is supplied through the pipe 23 to the adsorption tower 6B located at the uppermost stream of the adsorption device 5B. And this radioactive waste liquid is sequentially supplied to each adsorption tower 6B of other adsorption devices through piping 10B.
- Trivalent ruthenium cations such as RuCl 2 +
- ruthenium anions such as RuCl 4 ⁇
- radionuclide cations and anions other than ruthenium are adsorbed by the adsorbent in the corresponding adsorption tower 6B. Removed.
- the radioactive waste liquid containing neutral dissolved species of ruthenium (such as RuCl 3 ) and radionuclides other than ruthenium that have not been removed by each adsorption tower 6B of the adsorption device 5B passes through the adsorption tower 13 filled with activated carbon impregnated with oxine, and adsorbed. It is discharged from the device 5B to the discharge pipe 11.
- the pH adjuster aqueous solution may or may not be added to the radioactive waste liquid in the adjustment tank 18 as necessary.
- a pH adjuster is added to the radioactive liquid waste.
- an agent to be added to the radioactive liquid waste at least one of an oxidizing agent, a reducing agent, and a pH adjuster may be used.
- an oxidizing agent supply having an oxidizing agent tank and an oxidizing agent supply pipe provided with an on-off valve is provided in the same manner as the pH adjusting agent. What is necessary is just to connect the reducing agent supply apparatus which has a reducing agent supply piping which provided the apparatus, the reducing agent tank, and the on-off valve to the adjustment tank 18, respectively.
- ions (cations and anions) of the radionuclide such as ruthenium contained in the radioactive waste liquid are removed by the adsorption device 5, and the neutral dissolved species of the radionuclide such as ruthenium in the adjustment tank 18.
- Sex dissolved species can be converted into cations and anions.
- radionuclides such as ruthenium generated from neutral dissolved species
- the radionuclide contained in the radioactive liquid waste can be further reduced.
- the removal efficiency of the radionuclide contained in the radioactive liquid waste can be further improved.
- Example 6 A method for treating a radioactive liquid waste according to Example 6 which is another preferred embodiment of the present invention will be described with reference to FIG.
- the radioactive liquid waste treatment device 29 includes adsorption devices 32 and 40, an adjustment tank (liquidity adjustment unit) 34, an oxidant supply device 35, and a pH adjustment agent supply device 37.
- the adsorption device 32 has a plurality of adsorption towers 32A.
- the adsorbent selected according to the type of radionuclide contained in the radioactive liquid waste is separately packed in each adsorption tower 32A.
- the radioactive liquid waste supply pipe 30 is connected to the adsorption tower 32A located most upstream in the adsorption device 32.
- Each adsorption tower 32 ⁇ / b> A in the adsorption device 32 is sequentially connected by a pipe 31.
- the adsorption tower 32 ⁇ / b> A located on the most downstream side in the adsorption device 32 is connected to the adjustment tank 34 by a pipe 33.
- the oxidant supply device 35 includes an oxidant tank 41 and an oxidant supply pipe 36.
- the oxidant tank 41 is connected to the adjustment tank 34 by an oxidant supply pipe 36 provided with an on-off valve (not shown).
- the pH adjusting agent supply device 37 includes a pH adjusting agent tank 43 and a pH adjusting agent supply pipe 38.
- the pH adjusting agent tank 43 is connected to the adjustment tank 34 by a pH adjusting agent supply pipe 38 provided with an open / close valve (not shown). Connected.
- ozone gas that is an oxidizing agent is filled in the oxidizing agent tank 41
- an aqueous hydrochloric acid solution that is a pH adjusting agent is filled in the pH adjusting agent tank 43.
- the adsorption device 40 has a plurality of adsorption towers 40A.
- the adsorbent selected according to the type of radionuclide contained in the radioactive liquid waste is separately packed in each adsorption tower 40A.
- a pipe 39 connected to the adjustment tank 34 is connected to the adsorption tower 40 ⁇ / b> A located at the most upstream in the adsorption device 40.
- Each adsorption tower 40 ⁇ / b> A in the adsorption device 40 is sequentially connected by a pipe 42.
- the discharge pipe 11 is connected to the adsorption tower 40 ⁇ / b> A located most downstream in the adsorption device 40.
- Each adsorbent layer in each adsorption tower 32A and each adsorption tower 40A is separately filled with an adsorbent selected according to the radionuclide to be removed by adsorption.
- an adsorbent selected according to the radionuclide to be removed by adsorption.
- radioactive cesium and radioactive strontium for example, natural zeolite, artificial zeolite and silicic titanic acid are used, and in order to selectively adsorb radioactive antimony and the like, for example, a hydrous cerium-containing adsorbent is used.
- the adsorbent layer of an adsorption tower 32A is filled with ion exchange resins (cation exchange resin and anion exchange resin).
- the radioactive liquid waste includes, for example, transition metals such as ruthenium, technetium and niobium, alkali metals such as cesium, alkaline earth metals such as strontium, rare earth elements such as cerium, halogens such as antimony, tellurium and iodine, and carbon, Contains one or more radionuclide of non-metallic elements such as boron.
- transition metals such as ruthenium, technetium and niobium
- alkali metals such as cesium
- alkaline earth metals such as strontium
- rare earth elements such as cerium
- halogens such as antimony, tellurium and iodine
- carbon Contains one or more radionuclide of non-metallic elements such as boron.
- a radioactive liquid waste containing a plurality of radionuclides is driven through a radioactive liquid supply pipe 30 to an adsorption tower 32A located upstream in the adsorption device 32 by driving a pump (not shown) provided in the radioactive liquid supply pipe 30. Supplied. Thereafter, the radioactive liquid waste is sequentially supplied to each adsorption tower 32 located downstream through the pipe 31.
- the adsorbent in each adsorption tower 32A depends on the type of adsorbent in the adsorbent layer and the cation of the radionuclide contained in the radioactive liquid waste and the negative of the radionuclide. Ions are removed by adsorption.
- the radionuclide that has not been adsorbed and removed by the adsorbent in each adsorption tower 32 ⁇ / b> A flows through the pipe 33 together with the radioactive waste liquid and is guided to the adjustment tank 34.
- ruthenium which is a kind of radionuclide, is a cation (Ru (OH) 2 + and the like) in the radioactive liquid waste. It exists as a neutral dissolved species (Ru (OH) 4 etc.). Ruthenium cations (such as Ru (OH) 2 + ) are adsorbed and removed in the corresponding adsorption tower 32A while the radioactive liquid waste flows through the adsorption device 32. Ruthenium neutral dissolved species (such as Ru (OH) 4 ) flow into the adjustment tank 34 without being removed by the adsorption device 32.
- the ozone gas in the oxidant tank 41 is injected into the radioactive waste liquid in the adjustment tank 34 through the oxidant supply pipe 36.
- the radioactive waste liquid and the injected ozone gas are mixed in the adjustment tank 34 by a stirring device (not shown) provided in the adjustment tank 34.
- the aqueous hydrochloric acid solution in the pH adjusting agent tank 43 is injected into the radioactive waste liquid in the adjusting tank 34 through the pH adjusting agent supply pipe 38.
- the radioactive waste liquid in which ozone is dissolved and the hydrochloric acid aqueous solution are mixed in the adjustment tank 34 by the stirring device.
- Ruthenium neutral dissolved species (Ru (OH) 4 ) which was not converted to ruthenium cations by ozone gas injection, adjusts the radioactive liquid waste to acidic (for example, pH 2) by injection of hydrochloric acid aqueous solution.
- Radionuclides other than ruthenium contained in the radioactive liquid waste are also converted into cations and anions.
- Trivalent ruthenium cations such as RuCl 2 +
- ruthenium anions such as RuCl 4 ⁇
- neutral dissolved species of ruthenium such as RuCl 3
- Radioactive waste liquid containing radionuclide cations, anions and neutral dissolved species is supplied to the adsorption tower 40A located at the uppermost stream of the adsorption device 40 through the pipe 39.
- the radioactive liquid waste is sequentially supplied to the other adsorption towers 40A of the adsorption device through the pipe 42.
- Trivalent ruthenium cations such as RuCl 2 +
- ruthenium anions such as RuCl 4 ⁇
- radionuclide cations and anions other than ruthenium are adsorbed on the adsorbent by the corresponding adsorption tower 40A. Removed.
- a radioactive waste liquid containing neutral dissolved species of ruthenium (such as RuCl 3 ) and a radionuclide other than ruthenium that has not been removed by each adsorption tower 40 A of the adsorption device 40 is discharged from the adsorption device 40 to the discharge pipe 11.
- the treated water discharged from the adsorption device 40 is supplied to and stored in a storage tank (not shown) through the discharge pipe 11.
- the pH adjuster aqueous solution may or may not be added to the radioactive waste liquid in the adjustment tank 34 as necessary.
- an oxidizing agent and a pH adjusting agent are added to the radioactive liquid waste.
- an agent to be added to the radioactive liquid waste at least one of an oxidizing agent, a reducing agent, and a pH adjusting agent may be used.
- a reducing agent supply having a reducing agent tank and a reducing agent supply pipe provided with an on-off valve is provided in the same manner as the oxidizing agent and the pH adjusting agent.
- the device may be connected to the adjustment tank 34.
- the adsorption device 32 removes ions (cation and anion) of radionuclides such as ruthenium contained in the radioactive liquid waste, and contains neutral dissolved species of radionuclides such as ruthenium in the adjustment tank 34. Injecting ozone, which is an oxidizing agent, and hydrochloric acid, which is a pH adjusting agent, into a radioactive liquid waste, the neutral dissolved species of a radionuclide such as ruthenium is converted into a cation by changing the valence, and further, the pH of the radioactive liquid waste is changed.
- ozone which is an oxidizing agent
- hydrochloric acid which is a pH adjusting agent
- the neutral dissolved species of a radionuclide such as ruthenium can be converted into a cation and an anion by adjusting to acidity.
- cations and anions of radionuclides such as ruthenium generated from neutral dissolved species can be removed by adsorption with the adsorption device 40.
- the radionuclide contained in the radioactive liquid waste can be further reduced.
- the removal efficiency of the radionuclide contained in the radioactive liquid waste can be further improved.
- the pH adjusting agent is injected into the radioactive liquid waste in the adjustment tank 34 and the oxidizing agent is not injected in this embodiment, the cation of the radionuclide such as tenium produced in the radioactive liquid waste by the injection of the pH adjusting agent.
- the anion 40 can be removed by the adsorption device 40, the removal efficiency of the radionuclide contained in the radioactive liquid waste can be further improved.
- Example 7 A method for treating radioactive liquid waste according to Example 7 which is another preferred embodiment of the present invention will be described with reference to FIG.
- the radioactive waste liquid processing apparatus 29A used in the radioactive waste liquid processing method of the present embodiment has a configuration in which the adjustment tank 34 is replaced with the liquidity adjusting unit 34A in the radioactive waste liquid processing apparatus 29 used in the radioactive waste liquid processing method of Embodiment 6.
- Have The other configuration of the radioactive liquid waste treatment apparatus 29A is the same as that of the radioactive liquid waste treatment apparatus 29.
- a pipe 38 is connected to the liquidity adjustment unit 34A. Further, the pipes 33 and 39 are also connected to the liquidity adjusting unit 34A.
- the liquidity adjusting unit 34A is, for example, a static mixer, and has a structure in which an aqueous oxidizing agent solution and an aqueous pH adjusting agent solution injected in the process of flowing the radioactive liquid waste through the liquidity adjusting unit 34A can be mixed with the radioactive liquid waste.
- a method for treating the radioactive liquid waste of this embodiment using the radioactive liquid waste treatment apparatus 29A will be described.
- a radioactive liquid waste generated in a boiling water nuclear power plant and containing a radionuclide such as ruthenium is supplied to the adsorption device 32, and ruthenium contained in the radioactive liquid waste in the adsorption tower 32A corresponding to the adsorption device.
- the radionuclide cation and anion are adsorbed and removed by the adsorbent.
- Radioactive waste liquid containing neutral dissolved species of radionuclide such as ruthenium discharged from the adsorption device 32 is guided to the liquidity adjustment unit 34A through the pipe 33.
- ozone gas in the oxidizer tank 41 and aqueous hydrochloric acid in the pH adjuster tank 43 are injected into the liquid adjuster 34A into the radioactive waste liquid in the liquid adjuster 34A.
- the neutral dissolved species of the radionuclide such as ruthenium contained in the radioactive waste liquid become cations and anions as in the case of Example 6.
- These cations and anions are adsorbed and removed by the corresponding adsorption tower 40A of the adsorption device 40.
- This example can obtain the effect produced in the sixth example. Furthermore, this embodiment can simplify the radioactive waste liquid processing apparatus 29A compared to the radioactive waste liquid processing apparatus 29 by using the liquidity adjusting unit 34A.
- the radioactive waste liquid processing apparatus 29B used in the radioactive waste liquid processing method of the present embodiment removes the adsorption device 40 from the radioactive waste liquid processing apparatus 29 used in the radioactive waste liquid processing method of Example 6 and is connected to the adjustment tank 44.
- a switching valve 45 is provided in the discharge pipe 11, a switching valve 44 is provided in the radioactive waste liquid supply pipe 30, and the switching valve 45 and the switching valve 44 are connected via return pipes 46 ⁇ / b> A and 46 ⁇ / b> B.
- a return pipe 46 A connected to the switching valve 45 is connected to the upper end of the waste liquid storage tank 47, and a return pipe 46 B connected to the bottom of the waste liquid storage tank 47 and provided with a pump 48 is connected to the switching valve 44. .
- the return pipes 46 ⁇ / b> A and 46 ⁇ / b> B, the waste liquid storage tank 47, and the pump 48 that connect the switching valve 45 and the switching valve 44 are radioactive waste liquid supply devices that supply the radioactive waste liquid in the adjustment tank 34 to the adsorption device 32.
- the other configuration of the radioactive liquid waste treatment apparatus 29B is the same as that of the radioactive liquid waste treatment apparatus 29.
- a method for treating the radioactive liquid waste of this embodiment using the radioactive liquid waste treatment apparatus 29B will be described.
- the radioactive liquid waste generated in the boiling water nuclear power plant and containing the radionuclide such as ruthenium is processed by the radioactive liquid waste treatment device 29B, first, the switching valve 44 connects the radioactive waste liquid supply pipe 30 and the adsorption device 32. Thus, the radioactive waste liquid supply pipe 30 and the return pipe 46B are not connected.
- the switching valve 45 is operated so as to connect the discharge pipe 11 and the return pipe 46A.
- a radioactive liquid waste generated in a boiling water nuclear power plant and containing a radionuclide such as ruthenium is supplied to the adsorption device 32. Cations and anions of radionuclides such as are adsorbed and removed by the adsorbent. Radioactive waste liquid containing neutral dissolved species of radionuclide such as ruthenium discharged from the adsorption device 32 is guided to the adjustment tank 34 through the pipe 33. As in the first embodiment, ozone gas in the oxidizer tank 41 and hydrochloric acid aqueous solution in the pH adjuster tank 43 are injected into the adjustment tank 34 into the radioactive waste liquid in the adjustment tank 34.
- the neutral dissolved species of the radionuclide such as ruthenium contained in the radioactive waste liquid become cations and anions as in the case of Example 6.
- the radioactive waste liquid discharged from the adjustment tank 34 is supplied into the waste liquid storage tank 47 through the discharge pipe 11 and the return pipe 46A.
- the radioactive waste liquid containing cations and anions generated in the adjustment tank 34 is supplied to the waste liquid storage tank 47 until the waste liquid storage tank 47 is almost full of this radioactive waste liquid.
- An open / close valve (not shown) provided in an air discharge pipe (not shown) connected to the top of the waste liquid storage tank 47 is opened to facilitate the supply of radioactive waste liquid into the waste liquid storage tank 47.
- the water level of the radioactive waste liquid in the waste liquid storage tank 47 can be known by measuring with a water level meter (not shown) provided in the waste liquid storage tank 47.
- the switching valve 44 is operated so as to connect the return pipe 46B and the adsorption device 32, and the switching valve 45 is operated so that the discharge pipe 11 and the return pipe 46A are not connected.
- the pump 48 provided in the return pipe 46 ⁇ / b> B is driven, and the radioactive waste liquid in the waste liquid storage tank 47 is supplied to the adsorption device 32.
- Cations and anions of a radionuclide such as ruthenium contained in the radioactive waste liquid in the waste liquid storage tank 47 are adsorbed and removed by the adsorbent in the corresponding adsorption tower 32A of the adsorption device 32. Cations and anions of radionuclides such as ruthenium are discharged from the adsorption device 32 to the discharge pipe 11. The discharged radioactive liquid waste is not guided into the return pipe 46A.
- This example can obtain the effect produced in the sixth example. Furthermore, since the present embodiment does not require the adsorption device 40, the radioactive waste liquid treatment device 29B can be simplified compared to the radioactive waste liquid treatment device 29.
- the adjustment tank 4 may be replaced with the liquidity adjustment unit 4A.
- Example 9 A method for treating a radioactive liquid waste according to Example 9 which is another preferred embodiment of the present invention will be described with reference to FIG.
- the radioactive waste liquid processing apparatus 29C used in the radioactive waste liquid processing method of the present embodiment has a configuration in which the measuring device 49 is provided in the adjustment tank 34 in the radioactive waste liquid processing apparatus 29B used in the radioactive waste liquid processing method of the ninth embodiment. .
- the measuring device 49 is a measuring device that measures any one of the radioactive concentration, pH, redox potential, oxidizing agent concentration, and reducing agent concentration of the radioactive liquid waste. In this embodiment, the measuring device 49 measures the pH of the radioactive liquid waste.
- the other configuration of the radioactive liquid waste treatment apparatus 29C is the same as that of the radioactive liquid waste treatment apparatus 29B.
- a method for treating the radioactive liquid waste of this embodiment using the radioactive liquid waste treatment apparatus 29C will be described.
- a radioactive liquid waste generated in a boiling water nuclear power plant and containing a radionuclide such as ruthenium is treated in the same manner as in Example 8.
- the pH of the radioactive liquid waste in the adjustment tank 34 is measured by the measuring device 49.
- the opening degree of the on-off valve provided in the pH adjuster supply pipe 38 is adjusted, and the injection amount of the hydrochloric acid aqueous solution into the adjustment tank 34 is adjusted.
- the oxidation-reduction potential of the radioactive liquid waste in the adjustment tank 34 is measured by another measuring device 49.
- the opening degree of the on-off valve provided in the oxidant supply pipe 36 is adjusted, and the amount of ozone gas injected into the adjustment tank 34 is adjusted.
- Similar control can be performed by providing a measuring device 49 in the pipe 33.
- This example can obtain each effect produced in Example 8. Further, in this embodiment, since the pH and oxidation-reduction potential of the radioactive solution are measured, it is possible to appropriately control the respective injection flows of the hydrochloric acid aqueous solution and the ozone gas into the radioactive waste liquid.
- the radioactive waste liquid may be sampled from the adjustment tank 34 or the pipe 33, and the pH and oxidation-reduction potential of the radioactive waste liquid may be measured.
- the measurement device 49 may be provided.
Landscapes
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
ている。
Claims (27)
- コロイド状物質、前記コロイド状物質よりも粒径が大きい粒子状物質及び放射性物質を含む放射性廃液を、ろ過装置に供給して前記粒子状物質を前記ろ過装置で除去し、前記ろ過装置から排出された前記放射性廃液に含まれる前記コロイド状物質を静電フィルタで除去し、前記コロイド状物質が除去された前記放射性廃液が吸着装置に供給され、前記放射性廃液に含まれる放射性物質を前記吸着装置で除去することを特徴とする放射性廃液の処理方法。
- 負に帯電している前記コロイド状物質の除去が正に帯電される前記静電フィルタを用いて行われる請求項1に記載の放射性廃液の処理方法。
- 正に帯電している前記コロイド状物質の除去が負に帯電される前記静電フィルタを用いて行われる請求項1または2に記載の放射性廃液の処理方法。
- 前記コロイド状物質が除去された前記放射性廃液の放射能濃度を測定し、測定された前記放射能濃度が、前記放射能濃度の測定下限値よりも大きいとき、前記コロイド状物質が除去された前記放射性廃液を前記吸着装置に供給し、測定された前記放射能濃度が、前記測定下限値以下であるとき、前記コロイド状物質が除去された前記放射性廃液を、前記吸着装置をバイパスさせる請求項1に記載の放射性廃液の処理方法。
- コロイド状物質よりも粒径が大きい粒子状物質を除去するろ過装置と、前記ろ過装置に接続され、前記コロイド状物質を除去する静電フィルタを有するコロイド除去装置と、前記コロイド除去装置に接続され、放射性物質を吸着する吸着材を有する吸着装置とを備えたことを特徴とする放射性廃液処理装置。
- 前記コロイド除去装置が、負に帯電している前記コロイド状物質を除去する正に帯電される第1静電フィルタを有する第1コロイド除去装置、及び正に帯電している前記コロイド状物質を除去する負に帯電される第2静電フィルタを有する第2コロイド除去装置を含んでいる請求項5に記載の放射性廃液処理装置。
- 前記コロイド除去装置と前記吸着装置を接続する接続配管と、前記接続配管に設けられた第1開閉弁と、前記コロイド除去装置と前記第1開閉弁の間で前記接続配管に接続され、前記吸着装置をバイパスするバイパス配管と、前記バイパス配管に設けられた第2開閉弁と、前記第1開閉弁よりも上流で前記接続配管内を流れる前記放射性廃液の放射能濃度を測定する放射線検出器とを備えた請求項5に記載の放射性廃液処理装置。
- 前記吸着装置において前記放射性物質を吸着する前記吸着材が、ゼオライト、フェロシアン化物、チタン酸化合物、チタン酸塩化合物、イオン交換樹脂、キレート樹脂、活性炭及び添着活性炭のうちの少なくとも一つである請求項5に記載の放射性廃液処理装置。
- コロイド状物質、前記コロイド状物質よりも粒径が大きい粒子状物質及び放射性物質を含む放射性廃液を、ろ過装置に供給して前記粒子状物質を前記ろ過装置で除去し、前記ろ過装置から排出された前記放射性廃液に含まれる前記コロイド状物質を除去し、前記コロイド状物質が除去された前記放射性廃液が第1吸着装置に供給され、前記放射性廃液に含まれる放射性核種を前記第1吸着装置で除去し、前記第1吸着装置から排出された前記放射性廃液を、前記第1吸着装置の下流に配置されて、オキシン基を表面に担持した吸着剤を充填している第2吸着装置に供給することを特徴とする放射性廃液の処理方法。
- 前記コロイド状物質を静電フィルタで除去する請求項9に記載の放射性廃液の処理方法。
- 負に帯電している前記コロイド状物質の除去が正に帯電される前記静電フィルタを用いて行われる請求項10に記載の放射性廃液の処理方法。
- 前記第1吸着装置で前記放射性核種のイオンが除去された前記放射性廃液に、酸化剤、pH調整剤及び還元剤のうちの少なくとも1つを注入し、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの注入により前記放射性廃液に生成された、前記放射性核種のイオンを、第3吸着装置内の吸着剤で除去し、前記第3吸着装置から排出された前記放射性廃液を前記第2吸着装置に供給する請求項9に記載の放射性廃液の処理方法。
- 前記第1吸着装置から排出された前記放射性廃液を液性調整部に供給し、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの前記放射性廃液への注入が、前記液性調整部内で行われる請求項12に記載の放射性廃液の処理方法。
- 放射性廃液からコロイド状物質よりも粒径が大きい粒子状物質を除去するろ過装置と、前記ろ過装置に接続され、前記コロイド状物質を除去するコロイド除去装置と、前記コロイド除去装置に接続され、放射性核種を吸着する吸着剤を有する第1吸着装置と、前記第1吸着装置の下流に配置されて前記第1吸着装置に連絡され、オキシン基を表面に担持した吸着剤を充填している第2吸着装置とを備えたことを特徴とする放射性廃液処理装置。
- 前記コロイド除去装置が前記コロイド状物質を除去する静電フィルタを有する請求項14に記載の放射性廃液処理装置。
- 前記放射性核種が除去されて前記第1吸着装置から排出される前記放射性廃液に、酸化剤、pH調整剤及び還元剤のうちの少なくとも1つを注入する注入装置と、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの注入により前記放射性廃液に生成される前記放射性核種のイオンを除去する第3吸着装置とを備え、
前記第2吸着装置が、前記第3吸着装置の下流に配置され、前記第3吸着装置に接続される請求項14に記載の放射性廃液処理装置。 - 放射性核種を含む放射性廃液を第1吸着装置に供給し、前記放射性廃液に含まれる前記放射性核種のイオンを前記第1吸着装置内の吸着剤により除去し、前記第1吸着装置から排出された前記放射性廃液に、酸化剤、pH調整剤及び還元剤のうちの少なくとも1つを注入し、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの注入により前記放射性廃液に生成された、前記放射性核種のイオンを、第2吸着装置内の吸着剤で除去することを特徴とする放射性廃液の処理方法。
- 前記第1吸着装置から排出された前記放射性廃液を液性調整部に供給し、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの前記放射性廃液への注入が、前記液性調整部内で行われる請求項17に記載の放射性廃液の処理方法。
- 放射性核種を含む放射性廃液を吸着装置に供給し、前記放射性廃液に含まれる前記放射性核種のイオンを吸着装置内の吸着剤により除去し、前記吸着装置から排出された前記放射性廃液に、酸化剤、pH調整剤及び還元剤のうちの少なくとも1つを注入し、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの注入により生成された、前記放射性核種のイオンを含む前記放射性廃液を、前記吸着装置に供給し、前記放射性廃液に含まれた、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの注入により生成された前記イオンを、前記吸着装置内の前記吸着剤で除去することを特徴とする放射性廃液の処理方法。
- 前記吸着装置から排出された前記放射性廃液を液性調整部に供給し、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの前記放射性廃液への注入が、前記液性調整部内で行われる請求項19に記載の放射性廃液の処理方法。
- 前記放射性廃液のpHを計測し、計測された前記pHに基づいて前記放射性廃液に注入する前記pH調整剤の注入量を制御する請求項17または19に記載の放射性廃液の処理方法。
- 前記放射性廃液の酸化還元電位を計測し、計測された前記酸化還元電位を計測に基づいて前記放射性廃液に注入する前記酸化剤及び前記還元剤のうち少なくとも1つの注入量を制御する請求項17または19に記載の放射性廃液の処理方法。
- 放射性核種を含む放射性廃液を供給する第1吸着装置と、前記放射性核種が除去されて前記第1吸着装置から排出される前記放射性廃液に、酸化剤、pH調整剤及び還元剤のうちの少なくとも1つを注入する注入装置と、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの注入により前記放射性廃液に生成される前記放射性核種のイオンを除去する第2吸着装置とを備えたことを特徴とする放射性廃液処理装置。
- 前記第1吸着装置からの前記放射性廃液が供給される液性調整部を備え、前記液性調整部に前記注入装置を接続する請求項23に記載の放射性廃液処理装置。
- 放射性核種を含む放射性廃液を供給する吸着装置と、前記放射性廃液が除去されて前記吸着装置から排出される前記放射性廃液に、酸化剤、pH調整剤及び還元剤のうちの少なくとも1つを注入する注入装置と、前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つの注入により生成される前記放射性核種のイオンを含む前記放射性廃液を、前記吸着装置に導く放射性廃液供給装置とを備えたことを特徴とする放射性廃液処理装置。
- 前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つが注入される前の前記放射性廃液のpHを計測する計測装置を設けた請求項23または25に記載の放射性廃液処理装置。
- 前記酸化剤、前記pH調整剤及び前記還元剤のうちの少なくとも1つが注入される前の前記放射性廃液の酸化還元電位を計測する計測装置を設けた請求項23または25に記載の放射性廃液処理装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/913,024 US9799418B2 (en) | 2013-08-23 | 2014-07-29 | Method of treating radioactive liquid waste and radioactive liquid waste treatment apparatus |
GB1602829.2A GB2533497B (en) | 2013-08-23 | 2014-07-29 | Method of treating radioactive liquid waste and radioactive liquid waste treatment apparatus |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013173407A JP6046574B2 (ja) | 2013-08-23 | 2013-08-23 | 放射性廃液の処理方法及び放射性廃液処理装置 |
JP2013-173407 | 2013-08-23 | ||
JP2013-194469 | 2013-09-19 | ||
JP2013194469A JP6046582B2 (ja) | 2013-09-19 | 2013-09-19 | 放射性廃液の処理方法及び放射性廃液処理装置 |
JP2013-194226 | 2013-09-19 | ||
JP2013194226A JP6125960B2 (ja) | 2013-09-19 | 2013-09-19 | 放射性廃液の処理方法及び放射性廃液処理装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015025681A1 true WO2015025681A1 (ja) | 2015-02-26 |
Family
ID=52483462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/069898 WO2015025681A1 (ja) | 2013-08-23 | 2014-07-29 | 放射性廃液の処理方法及び放射性廃液処理装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9799418B2 (ja) |
GB (1) | GB2533497B (ja) |
TW (2) | TWI576859B (ja) |
WO (1) | WO2015025681A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018017565A (ja) * | 2016-07-27 | 2018-02-01 | 日立Geニュークリア・エナジー株式会社 | 放射性廃液の処理方法及び処理装置 |
EP3305403A4 (en) * | 2015-06-04 | 2019-02-13 | Ebara Corporation | ADSORBENT FOR ADSORPTION OF IODINE AND / OR ANTIMONY COMPOUNDS, PROCESS FOR PREPARING SAID ADSORBENT, AND METHOD AND APPARATUS FOR TREATING RADIOACTIVE LIQUID WAST THROUGH SAID ADSORBENT |
CN110467190A (zh) * | 2018-05-09 | 2019-11-19 | 上海核工程研究设计院有限公司 | 一种用于放射性含硼废液中回收硼的装置和方法 |
JP2021032652A (ja) * | 2019-08-22 | 2021-03-01 | 株式会社荏原製作所 | 放射性物質汚染水の除染装置及び除染方法 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6716247B2 (ja) | 2015-12-24 | 2020-07-01 | 株式会社荏原製作所 | 放射性アンチモン、放射性ヨウ素及び放射性ルテニウムの吸着剤、当該吸着剤を用いた放射性廃液の処理方法 |
JP6511094B2 (ja) * | 2017-06-20 | 2019-05-15 | 東芝プラントシステム株式会社 | 吸着塔及びその処理液排出方法 |
CN108461169A (zh) * | 2018-01-29 | 2018-08-28 | 岭东核电有限公司 | 一种核素零排放的铅铋堆放射性废液净化系统 |
CN110364280A (zh) * | 2019-06-20 | 2019-10-22 | 中国辐射防护研究院 | 一种放射性废树脂芬顿氧化废液的高效吸附处理方法 |
DE102019135684A1 (de) | 2019-12-23 | 2021-06-24 | Siempelkamp NIS Ingenieurgesellschaft mbH | Verfahren und Anordnung zum Reinigen von Flüssigkeit |
CN111233202A (zh) * | 2020-02-26 | 2020-06-05 | 苏州晶洲装备科技有限公司 | 多级选择性去除光伏废液中重金属离子的装置和方法 |
CN113359177B (zh) * | 2021-04-08 | 2022-05-20 | 中国辐射防护研究院 | 一种大质量固体环境中Pu、Am、Sr-90含量的联合分析方法 |
CN114047539A (zh) * | 2021-11-04 | 2022-02-15 | 山东核电有限公司 | 一种核流出物中Fe、Ni活度的测量方法 |
CN114291921A (zh) * | 2021-11-29 | 2022-04-08 | 江苏超敏科技有限公司 | 一种医院放射性废水衰变池系统及其处理方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009520185A (ja) * | 2005-12-14 | 2009-05-21 | エナジーソリューションズ デバーシファイド サービシズ インコーポレイテッド | 放射性廃水の処理方法およびシステム |
JP2009216577A (ja) * | 2008-03-11 | 2009-09-24 | Hitachi-Ge Nuclear Energy Ltd | 化学除染方法及び化学除染装置 |
JP2009220067A (ja) * | 2008-03-18 | 2009-10-01 | Ngk Insulators Ltd | 重金属イオンを、無機懸濁粒子と同時に無害化処理する方法及び無害化処理装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6140593A (ja) | 1984-08-01 | 1986-02-26 | 株式会社日立製作所 | 放射性廃液処理方法 |
FR2772742B1 (fr) * | 1997-12-23 | 2000-02-18 | Cogema | Procede de separation de metaux par ultrafiltration micellaire, utilisable pour le traitement d'effluents radioactifs |
DE10005681B4 (de) * | 2000-02-07 | 2005-06-16 | Atc Dr. Mann E.K. | Verfahren und Vorrichtung zur Dekontamination metallhaltiger Wässer |
JP2002031697A (ja) | 2000-07-17 | 2002-01-31 | Jgc Corp | 放射性廃液の処理方法 |
US8148594B2 (en) * | 2007-08-06 | 2012-04-03 | Energysolutions Diversified Services, Inc. | Process for treating radioactive waste water to prevent overloading demineralizer systems |
US9214248B2 (en) * | 2010-12-15 | 2015-12-15 | Electric Power Research Institute, Inc. | Capture and removal of radioactive species from an aqueous solution |
JP5603271B2 (ja) | 2011-03-04 | 2014-10-08 | 日立Geニュークリア・エナジー株式会社 | 放射性廃液の処理方法およびその処理装置 |
JP5849342B2 (ja) * | 2011-04-26 | 2016-01-27 | 株式会社化研 | 海水が混入した放射性汚染水からの放射性物質の除染装置及び除染方法 |
JP5815285B2 (ja) * | 2011-05-25 | 2015-11-17 | サンデン商事株式会社 | 放射性汚染水処理装置 |
CN202189565U (zh) * | 2011-05-30 | 2012-04-11 | 王方 | 民用双重防核辐射的净水装置 |
JP2013057599A (ja) | 2011-09-08 | 2013-03-28 | Kajima Corp | 放射性汚染水の処理方法 |
JP5724842B2 (ja) | 2011-11-18 | 2015-05-27 | アイシン・エィ・ダブリュ株式会社 | 信号機属性検出システム、信号機属性検出装置、信号機属性検出方法及びコンピュータプログラム |
JP5883675B2 (ja) | 2012-02-22 | 2016-03-15 | 日立Geニュークリア・エナジー株式会社 | 放射性廃液の処理方法 |
CN202549321U (zh) * | 2012-04-09 | 2012-11-21 | 苏州热工研究院有限公司 | 一种放射性废水吸附过滤器 |
-
2014
- 2014-07-29 GB GB1602829.2A patent/GB2533497B/en active Active
- 2014-07-29 US US14/913,024 patent/US9799418B2/en active Active
- 2014-07-29 WO PCT/JP2014/069898 patent/WO2015025681A1/ja active Application Filing
- 2014-08-08 TW TW105102028A patent/TWI576859B/zh active
- 2014-08-08 TW TW103127246A patent/TWI579864B/zh active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009520185A (ja) * | 2005-12-14 | 2009-05-21 | エナジーソリューションズ デバーシファイド サービシズ インコーポレイテッド | 放射性廃水の処理方法およびシステム |
JP2009216577A (ja) * | 2008-03-11 | 2009-09-24 | Hitachi-Ge Nuclear Energy Ltd | 化学除染方法及び化学除染装置 |
JP2009220067A (ja) * | 2008-03-18 | 2009-10-01 | Ngk Insulators Ltd | 重金属イオンを、無機懸濁粒子と同時に無害化処理する方法及び無害化処理装置 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3305403A4 (en) * | 2015-06-04 | 2019-02-13 | Ebara Corporation | ADSORBENT FOR ADSORPTION OF IODINE AND / OR ANTIMONY COMPOUNDS, PROCESS FOR PREPARING SAID ADSORBENT, AND METHOD AND APPARATUS FOR TREATING RADIOACTIVE LIQUID WAST THROUGH SAID ADSORBENT |
JP2018017565A (ja) * | 2016-07-27 | 2018-02-01 | 日立Geニュークリア・エナジー株式会社 | 放射性廃液の処理方法及び処理装置 |
CN110467190A (zh) * | 2018-05-09 | 2019-11-19 | 上海核工程研究设计院有限公司 | 一种用于放射性含硼废液中回收硼的装置和方法 |
CN110467190B (zh) * | 2018-05-09 | 2024-04-09 | 上海核工程研究设计院股份有限公司 | 一种用于放射性含硼废液中回收硼的装置和方法 |
JP2021032652A (ja) * | 2019-08-22 | 2021-03-01 | 株式会社荏原製作所 | 放射性物質汚染水の除染装置及び除染方法 |
Also Published As
Publication number | Publication date |
---|---|
TWI579864B (zh) | 2017-04-21 |
GB2533497B (en) | 2017-12-20 |
TWI576859B (zh) | 2017-04-01 |
TW201616512A (zh) | 2016-05-01 |
TW201523637A (zh) | 2015-06-16 |
GB2533497A (en) | 2016-06-22 |
US20160211040A1 (en) | 2016-07-21 |
GB201602829D0 (en) | 2016-04-06 |
US9799418B2 (en) | 2017-10-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2015025681A1 (ja) | 放射性廃液の処理方法及び放射性廃液処理装置 | |
JP6046582B2 (ja) | 放射性廃液の処理方法及び放射性廃液処理装置 | |
Elabd et al. | Uranyl ions adsorption by novel metal hydroxides loaded Amberlite IR120 | |
JP5880851B2 (ja) | 放射性核種除染システム及び放射性核種除染方法 | |
Hansen et al. | Use of iron oxide-coated sand to remove strontium from simulated Hanford tank wastes | |
Liu et al. | Removal of radioactive iodide from simulated liquid waste in an integrated precipitation reactor and membrane separator (PR-MS) system | |
JP5849342B2 (ja) | 海水が混入した放射性汚染水からの放射性物質の除染装置及び除染方法 | |
Oh et al. | Chemical precipitation–based treatment of acidic wastewater generated by chemical decontamination of radioactive concrete | |
JP6173396B2 (ja) | 原発の重大事故時に発生する放射性廃液の処理方法及び処理装置 | |
JP6046574B2 (ja) | 放射性廃液の処理方法及び放射性廃液処理装置 | |
JP2019070581A (ja) | 汚染水処理方法、並びに汚染水処理システム及びこれに用いるナトリウム化合物添加装置 | |
JP6125960B2 (ja) | 放射性廃液の処理方法及び放射性廃液処理装置 | |
JP2014001991A (ja) | 放射性核種除去システム及び放射性核種除去方法 | |
JP6028545B2 (ja) | セシウムの回収方法 | |
Rahman et al. | Overview on recent trends and developments in radioactive liquid waste treatment part 1: sorption/ion exchange technique | |
WO2021152975A1 (ja) | 放射性廃液処理システム及び放射性廃液の処理方法 | |
JP2018017565A (ja) | 放射性廃液の処理方法及び処理装置 | |
RU2675251C1 (ru) | Способ переработки жидких радиоактивных отходов | |
JPS60214299A (ja) | 放射性廃液中の放射能除去方法 | |
JP2020003248A (ja) | 放射性廃液処理装置および放射性廃液処理方法 | |
Kim et al. | A concept for an emergency countermeasure against radioactive wastewater generated in severe nuclear accidents like the Fukushima Daiichi disaster | |
RU2675787C1 (ru) | Способ переработки жидких радиоактивных отходов | |
JP6688157B2 (ja) | 放射性廃液の処理装置及び処理方法 | |
Taylor et al. | Results of small-scale tests for removing mercury from ORNL process wastewater | |
US20160272509A1 (en) | Halogen oxyacid adsorbent, method for manufacturing the same, and method for treating halogen oxyacid-containing water |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14838234 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 201602829 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20140729 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14913024 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14838234 Country of ref document: EP Kind code of ref document: A1 |