JP5849342B2 - Decontamination apparatus and the decontamination method of the radioactive material from radioactive contaminated water seawater is mixed - Google Patents

Decontamination apparatus and the decontamination method of the radioactive material from radioactive contaminated water seawater is mixed Download PDF

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JP5849342B2
JP5849342B2 JP2011098498A JP2011098498A JP5849342B2 JP 5849342 B2 JP5849342 B2 JP 5849342B2 JP 2011098498 A JP2011098498 A JP 2011098498A JP 2011098498 A JP2011098498 A JP 2011098498A JP 5849342 B2 JP5849342 B2 JP 5849342B2
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oxine
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克嘉 蓼沼
克嘉 蓼沼
行生 花本
行生 花本
智 戸祭
智 戸祭
睦 田仲
睦 田仲
剣一 加藤
剣一 加藤
きよ子 黒澤
きよ子 黒澤
明 津口
明 津口
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株式会社化研
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本発明は、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に関する。 The present invention relates to decontamination apparatus and the decontamination method of the radioactive material from radioactive contaminated water seawater is mixed.

非特許文献1には、オキシン(8-Hydroxyquinoline)を担持した活性炭を用いて放射性汚染水中の放射性のCP、FP、TRUを除去する方法が記載されている。 Non-Patent Document 1, oxine (8-hydroxyquinoline) supported the radioactive CP radioactive contamination in water by using activated carbon, FP, a method of removing the TRU is described.

特許文献1には、リンモリブデン酸アンモニウム(AMP)を担持した多孔性無機物担体、例えばアルミナやシリカを用いて放射性汚染水中の放射性のCsを除去する方法が記載されている。 Patent Document 1, a porous inorganic carrier carrying ammonium phosphomolybdate (AMP), a method of removing radioactive Cs radioactive contamination in water by using, for example, alumina or silica are described.

特許文献2には、Br を担持した活性炭を用いてヨウ素(Iodine)を除去する方法が記載されている。 Patent Document 2, a method of removing iodine (Iodine) using activated carbon carrying Br 3 are described.

特許文献3には、水に不溶とした放射性物質を活性炭、ゼオライト、濾過砂、炭素繊維系材料、セルロース系材料あるいはガラス繊維系材料にトラップすることが記載されている。 Patent Document 3, a radioactive substance insoluble in water activated carbon, zeolite, filtration sand, carbon fiber-based materials, has been described to be trapped in the cellulosic material or glass fiber-based material.

特開2000−84418号公報 JP 2000-84418 JP 特開2000−239190号公報 JP 2000-239190 JP 特開2002−267795号公報 JP 2002-267795 JP

水が混入している放射性汚染水は、一般的なイオン交換樹脂による浄化は困難であると予想される。 Radioactive contaminated water sea water is mixed, the purification according to a general ion exchange resins are expected to be difficult. 従って、イオン交換樹脂に代替えする除染剤が求められることになる。 Therefore, the decontamination agent to substitute the ion exchange resin is obtained.

本発明は、一般的なイオン交換樹脂を用いることをしないで、流出している放射性汚染水が海水を混入している場合にあっても機能的、効果的に放射性物質を除染して浄化し、低レベルの放射性汚染水とすることのできる除染装置及び除染方法を提供することを目的とする。 The present invention is not to be a general ion exchange resins, functional even when the radioactive contaminated water that flows out is mixed with seawater, and decontaminated effectively radioactive material purification and, an object of the invention to provide a decontamination apparatus and the decontamination method can be a low-level radioactive contaminated water.

本発明は、海水が混入した放射性汚染水に、オキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ担持させた細粒の活性炭を投入し、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)、Cs(セシウム)、Iodine(ヨウ素)を捕捉し、ロジゾン酸の粉末あるいは溶液を添加して放射性Sr(ストロンチウム)、Ba(バリウム)とキレート化し、それらを沈殿剤で凝集沈殿させる1次浄化処理系、さらに1次浄化処理系で処理した放射性汚染水についてオキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ担持した粗粒の活性炭を充填した浄化塔へ通液する2次浄化処理系からなることを特徴とす The present invention relates to radioactive contaminated water sea water is mixed, oxine (8-hydroxyquinoline), ammonium phosphomolybdate (AMP), was charged with activated carbon granules for the Br 3 was supported respectively, radioactive CP (radioactive corrosion product), FP (radioactive fission products), transuranic elements such including TRU (uranium: U, Pu, Am, Cm), Cs (cesium), to capture iodine (iodine), powder or solution of rhodizonate the added radioactive Sr (strontium), chelating and Ba (barium), their primary purification treatment system for aggregating precipitated with a precipitating agent, further 1 for primary purification treatment system treated with radioactive contaminated water oxine (8-hydroxyquinoline ), ammonium phosphomolybdate (AMP), to characterized in that it consists of secondary purification treatment system for passing liquid Br 3 to purifying tower filled with loaded with coarse activated carbon, respectively 、海水が混入した放射性汚染水からの放射性物質の除去装置を提供する。 Provides an apparatus for removing radioactive material from radioactive contaminated water sea water is mixed.

本発明は、海水が混入した放射性汚染水を導入する導入口及び浄化された水を導出する導出口を備えた放射性汚染水浄化塔に、オキシン(8-Hydroxyquinoline)を担持した活性炭で形成したオキシン担持活性炭層と、リンモリブデン酸アンモニウム(AMP)を担持した活性炭で形成したAMP担持活性炭層と、Br を担持した活性炭で形成したBr 担持活性炭層との3種類の機能性活性炭を組み合わせて積層構成した活性炭除染剤層を設けたことを特徴とする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を提供する。 The present invention relates to radioactive contaminated water purification tower having a conductive outlet to derive inlet and purified water introducing radioactive contaminated water sea water is mixed, formed activated carbon carrying oxine (8-hydroxyquinoline) and oxine-supporting activated carbon layer, and AMP-supporting activated carbon layer formed in the activated carbon carrying ammonium phosphomolybdate (AMP), the three functions of the activated carbon layer between Br 3 on activated charcoal layer formed in the activated carbon carrying Br 3 combinations sea water, characterized in that a charcoal decontaminant layer laminated configured to provide a decontamination apparatus radioactive substances from radioactive contaminated water which is mixed.

本発明は、また、前記3種類の機能性活性炭を組み合わせて積層構成した活性炭除染剤層の上流側あるいは/及び下流側に活性炭層を設けて活性炭除染剤層を構成したことを特徴とする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を提供する。 The present invention also characterized in that provided an activated carbon layer is made of activated carbon decontaminant layer on the upstream side or / and downstream of the activated carbon decontaminant layer laminated structure by combining the three types of functional active carbon layer providing decontamination apparatus radioactive substances from radioactive contaminated water sea water is mixed to.

本発明は、海水が混入した放射性汚染水を導入する導入口及び浄化された水を導出する導出口を備えた放射性汚染水浄化塔に、オキシン(8-Hydroxyquinoline)を担持したオキシン担持活性炭と、リンモリブデン酸アンモニウムを担持したAMP担持活性炭と、Br を添着し、担持させたBr 担持活性炭との3種類の機能性活性炭を組み合わせ、混合することで構成した活性炭除染混床層を設けたことを特徴とする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を提供する。 The present invention relates to radioactive contaminated water purification tower having a conductive outlet to derive inlet and purified water introducing radioactive contaminated water sea water is mixed, and oxine-supporting activated carbon carrying oxine (8-hydroxyquinoline) , and AMP-supporting activated carbon carrying ammonium phosphomolybdate, a Br 3 impregnated combines three functions activated carbon with Br 3 supported activated carbon was supported, activated carbon decontamination mixed bed layer constituted by mixing sea water, characterized in that provided to provide a decontamination apparatus radioactive substances from radioactive contaminated water which is mixed.

本発明は、また、上述した放射性物質の除染装置が用いられて、海水が混入した放射性汚染水から、オキシン担持活性炭で、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)を除去し、AMP担持活性炭で、放射性のCsを除去し、Br 担持活性炭で、放射性のヨウ素を除去することを特徴とする海水が混入した放射性汚染水からの放射性物質の除染方法を提供する。 The present invention is also used decontamination apparatus of radioactive material described above, from a radioactive contaminated water sea water is mixed, with oxine-supporting activated carbon, radioactive CP (radioactive corrosion products), FP (radioactive fission products ), TRU (transuranic elements including uranium compounds: U, Pu, Am, to remove the Cm), with AMP-supporting activated carbon, to remove Cs radioactive, with Br 3 on charcoal, to remove the radioactive iodine It provides a decontamination method of radioactive substances from radioactive contaminated water seawater, wherein is mixed.

本発明は、海水が混入した放射性汚染水に、オキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ添着し、担持させた細粒の活性炭を投入し、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)、Cs(セシウム)、Iodine(ヨウ素)を捕捉し、ロジゾン酸(RHOD)の粉末あるいは溶液を添加して放射性Sr(ストロンチウム)、Ba(バリウム)とキレート化し、それらを沈殿剤で凝集沈殿させて1次浄化処理し、さらに1次浄化処理した放射性汚染水についてオキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ担持した粗粒の活性炭を充填した浄化塔へ通液する2次浄化処理することから The present invention relates to radioactive contaminated water sea water is mixed, oxine (8-hydroxyquinoline), ammonium phosphomolybdate (AMP), impregnated with Br 3, respectively, was charged with fine activated carbon having supported thereon, radioactive CP (radioactive corrosion products), FP (radioactive fission products), TRU (transuranic elements such including uranium: U, Pu, Am, Cm), Cs (cesium), to capture iodine (iodine), rhodizonic acid ( powder or solution by adding a radioactive Sr of RHOD) (strontium), chelating and Ba (barium), which was allowed to agglomerate precipitated primary purification treatment with a precipitating agent, for further primary cleaning process radioactive contaminated water oxine (8-hydroxyquinoline), ammonium phosphomolybdate (AMP), since the secondary purification process for passing liquid Br 3 to purifying tower filled with loaded with coarse activated carbon, respectively ることを特徴とする、海水が混入した放射性汚染水からの放射性物質の除去方法を提供する。 Characterized Rukoto provides method of removing radioactive materials from radioactive contaminated water sea water is mixed.

本発明は、上述したように、一般的なイオン交換樹脂を用いることなく、3種類の機能性活性炭を組み合わせることで構成した活性炭除染剤を使い、オキシン担持活性炭で、海水などの塩類が混入した放射性汚染水から、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)を除去し、AMP担持活性炭で、放射性のCsを除去し、Br 担持活性炭で、放射性のヨウ素(Iodine)を除去することができるので、海水が混入した高レベル放射性汚染水を機能的に、効果的に低レベル放射性汚染水とすることができる。 The present invention, as described above, without using a general ion-exchange resin, using activated carbon decontaminant configured by combining three functions activated carbon, with oxine-supporting activated carbon, contamination salts such as sea water from radioactive contaminated water, radioactive CP (radioactive corrosion products), FP (radioactive fission products), TRU (transuranic elements such including uranium: U, Pu, Am, Cm) is removed, in AMP on charcoal to remove Cs radioactive, with Br 3 on charcoal, it is possible to remove the radioactive iodine (iodine), the high level radioactive contaminated water sea water is mixed functionally effectively low-level radioactive contamination it can be water.

本発明の実施例の構成を示す図。 Figure showing the configuration of an embodiment of the present invention. 本発明の実施例である放射性物質の除染装置の構成を示す図。 Diagram illustrating the configuration of a decontamination apparatus of radioactive materials according to an embodiment of the present invention. オキシン炭の基本反応式を示す図。 It shows a basic reaction formula of oxine charcoal. AMPの基本構造式を示す図。 It shows the basic structure of the AMP. Br を担持した活性炭のヨウ素除去原理を示す図。 It shows the iodine removal principle of the activated carbon carrying br 3. Br を担持した活性炭の廃液処理効率を示す図。 It shows a wastewater treatment efficiency loaded with activated carbon br 3. 活性炭除染剤の性能確認に用いられた装置の構成を示す図。 It shows a structure of an apparatus used in the performance check of the activated carbon decontaminant. 活性炭除染剤層による除染の効果を示す図。 It shows the effect of decontamination with activated carbon decontaminant layer. 海水成分が共存しても放射性核種の除去可能を示す図。 FIG even seawater components coexist shows a possible removal of radionuclides.

以下、本発明の実施例を図面に基づいて説明する。 DETAILED DESCRIPTION OF THE PREFERRED embodiment of the present invention with reference to the drawings.

図1は、本発明の実施例である海水が混入した放射性汚染水からの放射性物質の除去装置(以下、放射性物質の除去装置という。)の構成を示す図である。 Figure 1 is a device for removing radioactive material from radioactive contaminated water sea water is mixed to an embodiment of the present invention (hereinafter. Referred removing apparatus of radioactive material) is a diagram showing a configuration of.

図1において、放射性物質の除去装置100は、RO膜(逆浸透膜)を備えたRO脱塩システム11で構成される前処理系1、凝集沈殿分離槽12を有して凝集沈殿分離を行うことで構成される1次処理系(1次処理浄化系)2及び放射性汚水浄化塔13で構成される2次処理系(2次処理浄化系)3を備えて構成される。 In Figure 1, the removal apparatus 100 of the radioactive material, performing coagulating sedimentation separation has pretreatment system 1, a coagulating sedimentation separation tank 12 composed of a RO desalination system 11 having a RO membrane (reverse osmosis membrane) configured with a secondary treatment system (secondary treatment purification system) 3 composed of a primary treatment system (primary treatment clean-up system) 2, and radioactive dirty water tower 13 constructed by. 2次処理系3の下流側に低レベル汚染水を貯蔵する貯槽5が接続される。 Storage tank 5 for storing the low level contaminated water is connected downstream of the secondary processing system 3.

前処理系1は、1 st −stepとして構成され、放射性汚染水の真水である脱塩水9と放射性物質を含む放射性汚染水20との分離(真水化を放射性物質の分離)を行う。 Pretreatment system 1, 1 is constructed as st -step, to separate the desalinated water 9, which is a fresh water radioactive contaminated water with radioactive contaminated water 20 containing the radioactive substance (separation of radioactive material the fresh water of).

1次処理系2と2次処理系3は、2 nd −stepとして構成され、分離放射性汚染水の低レベル化を行う。 Primary processing system 2 and the secondary processing system 3 is configured as a 2 nd -step, perform low level of separation radioactive contaminated water.

RO脱塩システム11は、RO膜を備えて構成される。 RO desalination system 11 is configured with a RO membrane. 図1には、多段化されたRO脱塩システムが図示されており、初段のRO脱塩塔11Aの下部には、放射性汚染水が導入され、上部からは分離放射性汚染水が導出される。 In FIG. 1, a staged RO desalination system is illustrated in a lower part of the first-stage RO demineralizer 11A, radioactive contaminated water is introduced, separating radioactive contaminated water is derived from the top.

水が混入した放射性汚染水4は、濾過装置6に導入され、放射性汚染水7と高レベルの放射性物質である濾過分離物質8とに分離される。 Radioactive contaminated water 4 sea water is mixed is introduced into the filtration apparatus 6 is separated into the filtration separator material 8 is highly radioactive and radioactive contaminated water 7.

初段のRO脱塩塔11Aで分離された脱塩水は上部側から次段のRO脱塩塔11Bに導入され、更に脱塩処理される。 The demineralized water separated in the first stage of RO demineralizer 11A is introduced from the upper side to the subsequent RO demineralizer 11B, is further desalination process. 脱塩処理された脱塩水は、真水である脱塩水9とされて導出され、放射性物質が残留する放射性汚染水は再度初段のRO脱塩塔11Aに導入される。 Demineralized water is desalted is derived is a demineralized water 9, which is a fresh water, radioactive contaminated water radioactive material remains is again introduced into the first stage of RO demineralizer 11A.

このようにして、海水が混入した放射性汚染水はRO膜でその一部が真水化され、他の部分が分離放射性汚染水20とされる。 In this way, the radioactive contaminated water seawater is mixed in part is fresh water of at RO membrane, other parts are separated radioactive contaminated water 20. 分離放射性汚染水20は、分離した放射性物質と海水成分を含む放射性汚染水である。 Separating radioactive contaminated water 20 is radioactive contaminated water containing the separated radioactive materials and seawater components. この放射性汚染水は、1次処理系2及び2次処理系3で処理され浄化される。 The radioactive contaminated water is treated with a primary treatment system 2 and the secondary processing system 3 purification. 1次処理系2で凝集沈殿処理を行い、2次処理系3でイオン吸着処理を行う。 It performs coagulation sedimentation process in the primary treatment system 2, the ion adsorption treatment in the secondary processing system 3.

1次処理系2を構成する凝集沈殿分離槽12は、撹拌機21を備え、導入された分離放射性汚染水20を撹拌することができる。 Flocculation separation tank 12 of the primary treatment system 2 is provided with a stirrer 21, can be stirred introduced separated radioactive contaminated water 20.

凝集沈殿分離槽12には、オキシン(8-Hydroxyquinoline)を添着し、担持させた細粒の活性炭であるオキシン担持活性炭(KMAC)、リンモリブデン酸アンモニウム(AMP)を添着し、担持させた細粒の活性炭であるAMP担持活性炭(AMP/AC)、Br を添着し、担持させた細粒の活性炭であるBr 担持活性炭(KBAC)及び吸着剤としてのロジゾン酸(RHOD)の粉末あるいは溶液を順次投入処理する。 Granules in the flocculation separation tank 12, which is impregnated with oxine (8-hydroxyquinoline), oxine-carrying activated carbon which is activated carbon granules obtained by supporting (KMAC), impregnated with ammonium phosphomolybdate (AMP), was supported AMP on activated carbon is activated carbon (AMP / AC), impregnated with Br 3, a powder or a solution of rhodizonate (RHOD) as Br 3 on activated carbon (KBAC) and the adsorbent is activated carbon of fines was supported sequentially on process. この順次投入の後に、凝集沈殿剤を投入する。 After this sequence on, turning on the coagulation-sedimentation agent.

このように、上述したKMAC、AMP/AC、KBAC及びRHODを順次投入処理すると共に、凝集剤を投入して、撹拌機21で撹拌する撹拌処理を行う。 Thus, KMAC described above, AMP / AC, with sequentially on processing the KBAC and RHOD, by introducing the flocculating agent, performs stirring process for stirring in a stirrer 21. これらの処理によって放射性物質の凝集沈殿分離処理を行う。 Performing coagulating sedimentation separation treatment of radioactive materials by these processes.

以上のように、海水が混入した放射性汚染水に、オキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ添着し、担持させた細粒の活性炭を投入し、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)、Cs(セシウム)、Iodine(ヨウ素)を捕捉し、ロジゾン酸の粉末あるいは溶液を添加して放射性Sr(ストロンチウム)、Ba(バリウム)とキレート化し、それらを沈殿剤で凝集沈殿させる1次浄化処理を行う系統が形成される。 As described above, the radioactive contaminated water sea water is mixed, oxine (8-hydroxyquinoline), ammonium phosphomolybdate (AMP), impregnated with Br 3, respectively, was charged with fine activated carbon having supported thereon, of radioactive CP (radioactive corrosion products), FP (radioactive fission products), TRU (transuranic elements such including uranium: U, Pu, Am, Cm), Cs (cesium), to capture iodine (iodine), rhodizonate powder or solution by adding radioactive Sr (strontium), chelating and Ba (barium), system for performing a primary purification treatment for flocculation them precipitant is formed.

また、海水が混入した放射性汚染水に、オキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ添着し、担持させた細粒の活性炭を投入し、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)、Cs(セシウム)、Iodine(ヨウ素)を捕捉し、ロジゾン酸(RHOD)の粉末あるいは溶液を添加して放射性Sr(ストロンチウム)、Ba(バリウム)とキレート化し、それらを沈殿剤で凝集沈殿させて1次浄化処理し、さらに1次浄化処理した放射性汚染水についてオキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ担持した粗粒の活性炭を充填した浄化塔へ通液する2次浄化処理することからなる Further, the radioactive contaminated water sea water is mixed, oxine (8-hydroxyquinoline), ammonium phosphomolybdate (AMP), impregnated with Br 3, respectively, the activated carbon granules which was supported was charged, radioactive CP (radioactive corrosion products), FP (radioactive fission products), TRU (transuranic elements such including uranium: U, Pu, Am, Cm), Cs (cesium), iodine (iodine) captures, rhodizonate (RHOD) powder or solution by adding radioactive Sr (strontium), chelating and Ba (barium), they were primary purification treatment by flocculation with a precipitating agent, and further the primary purification process radioactive contaminated water oxine (8 -Hydroxyquinoline), ammonium phosphomolybdate (AMP), consists of secondary purification process for passing liquid Br 3 to purifying tower filled with loaded with coarse activated carbon, respectively 水が混入した放射性汚染水からの放射性物質の除去方法が形成される。 Method of removing radioactive materials from radioactive contaminated water water is mixed is formed.

凝集沈殿分離槽12の下流側には2つの濾布あるいは遠心分離機22、23が設けられる。 Two filter cloths or centrifuge 22, 23 is provided on the downstream side of the flocculation separation tank 12.

凝集沈殿分離槽12の下部からは、凝集沈殿物が導出され、濾布あるいは遠心分離機22に導入されて、一方の高レベルAC24として取り出されると共に、分離された液は凝集沈殿分離槽12に戻される。 From the bottom of the coagulating sedimentation separation tank 12, aggregate precipitate is derived, is introduced into the filter cloth or centrifuge 22, together with the taken out as one of the high-level AC24, is separated liquid in the coagulating sedimentation separation tank 12 It is returned.

凝集沈殿分離槽12の上澄み液は中レベルの汚染水26であり、この上澄み液は上部側から他の濾布あるいは遠心分離機23に導入される。 Supernatant of coagulating sedimentation separation tank 12 is a contaminated water 26 mid-level, this supernatant is introduced from the upper side to the other cloth or centrifuge 23. 濾布あるいは遠心分離機23に導入された中レベル汚染水26からは、他の高レベルAC24が分離され、他の高レベルAC24が分離された放射性汚染水27は2次処理系3へと送られる。 From level contaminated water 26 in introduced into the filter cloth or centrifuge 23, other high level AC24 are separated, radioactive contaminated water 27 other high level AC24 has been separated feed to the secondary treatment system 3 It is.

上述したKMAC、AMP/AC、KBACの各機能炭及び活性炭(AC)の機能については、2次処理系3の説明の際に行う。 Above KMAC, the function of AMP / AC, each function charcoal KBAC and activated carbon (AC) is carried out in the description of the secondary processing system 3.

このように、1次処理系2で放射性Sr. Thus, radioactive Sr. In the primary treatment system 2 Baを含む放射性物質の全般の1次除染がなされ、2次処理系3で残留する放射性物質の除去を行う。 Primary decontamination general radioactive material containing Ba is made, the removal of radioactive material remaining in the secondary processing system 3.

2次処理系3は、放射性汚染水浄化塔13によって構成される。 Secondary processing system 3 is constituted by a radioactive contaminated water purification tower 13.

本例の場合、放射性汚染水浄化塔13は並列した4つの放射性汚染水浄化塔13A−13Dから構成されている。 In this example, radioactive contaminated water purification tower 13 is composed of four radioactive contaminated water purification tower 13A-13D in parallel. 各放射性汚染浄化塔13A−13Dは同一構成とされ、放射性汚染水27が上方から導入される。 Each radioactive decontamination column 13A-13D is the same configuration, radioactive contaminated water 27 is introduced from above.

本実施例は、以上述べた浄化系である放射性物質の除去装置100は、図9に図示した各種の元素に適用されて、各種の放射性物質を除去することができる。 This embodiment, removing apparatus 100 of radioactive materials is a clean-up system described above can be applied to various elements illustrated in FIG. 9, to remove various radioactive materials.

図2に、1つの放射性汚染浄化塔13を示す。 Figure 2 shows one radioactive decontamination tower 13. この放射性汚染浄化塔13は、機能性活性炭充填放射性汚染水浄化塔として構成され、放射性物質が吸着し蓄積するためその周囲は放射線の外部漏出を防止するため遮蔽される。 The radioactive decontamination column 13 is configured as a functional activated carbon packing radioactive contaminated water purification tower, radioactive material around for adsorbing accumulated is shielded to prevent external leakage of radiation.

放射性汚染水27に混入が予想される放射性物質には、I−131、Cs−134、Cs−137、CP、FP、TRUがある。 The radioactive material mixed in the radioactive contaminated water 27 is expected, I-131, Cs-134, Cs-137, CP, FP, there TRU is. 予め、放射性Sr、Baなどは1次処理系で用いたロジゾン酸(RHOD)によって分離してある。 Previously, radioactive Sr, etc. Ba are separated by rhodizonic acid used in the primary treatment system (RHOD).

このように、図2は、放射性汚染水浄化塔13を備えた本発明の実施例である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(以下、除染装置という。)を示す。 Thus, FIG. 2, the decontamination apparatus of radioactive material from radioactive contaminated water purification tower 13 radioactive contaminated water sea water is an embodiment of the present invention is mixed with (hereinafter, referred to. Decontamination device) show.

放射性物質の除染装置200は、上述したように、本体となる放射性汚染水浄化塔13(以下、浄化塔という。)を備える。 Decontamination apparatus 200 of the radioactive material, as described above, comprises a radioactive contaminated water purification tower 13 as a main body (hereinafter, referred purification column.).

浄化塔13は、筒状に形成され、上部に導入口32、そして下部に導出口33を備える。 Purification column 13 is formed in a cylindrical shape, provided with inlet 32 ​​and outlet 33 at the bottom, at the top. 導入口32には、海水が混入したレベル放射性汚染水27が導入され、導出口33からは、浄化された水が低レベル放射性汚染水45として導出される。 The inlet port 32, is introduced level radioactive contaminated water 27 in the sea water is mixed, from the outlet port 33, purified water is derived as a low-level radioactive contaminated water 45.

浄化塔13の内部には、オキシン(8-Hydroxyquinoline)を添着し、担持させた活性炭で形成したオキシン担持活性炭層41、リンモリブデン酸アンモニウム(AMP)を添着し、担持させた活性炭で形成したAMP担持活性炭層42及びBr を添着し、担持させた活性炭で形成したBr 担持活性炭層43との3種類の機能性活性炭を組み合わせて構成した活性炭除染剤層40が設けてある。 Inside the purification column 13, impregnated with oxine (8-hydroxyquinoline), oxine-supporting activated carbon layer 41 is formed by activated carbon was supported, impregnated with ammonium phosphomolybdate (AMP), it was formed by activated carbon was supported AMP impregnated with activated carbon impregnated layer 42 and Br 3, activated carbon decontaminant layer 40 formed by combining three functions activated carbon with Br 3 on activated charcoal layer 43 formed in the activated carbon was supported is provided. 組み合わせ方は任意のものが採用可能である。 How to combine can be adopted any of those.

オキシン担持活性炭層41は、海水が混入した放射性汚染水27から、放射性のCP、FP、TRUを機能的に、効果的に除去する。 Oxine-supporting activated carbon layer 41 is from a radioactive contaminated water 27 which sea water is mixed, radioactive CP, FP, the TRU functionally effectively removed. そのため、ここではこの層を1 ST機能炭〔KMAC〕と呼ぶ。 Therefore, it referred here as this layer a 1 ST function charcoal [KMAC].

AMPを添付して担持したAMP担持活性炭層42は、海水が混入した放射性汚染水であって、1 ST機能炭を通過した放射性汚染水から放射性のCsを除去する。 AMP on activated charcoal layer 42 carrying attach AMP is a radioactive contaminated water sea water is mixed to remove Cs radioactive from radioactive contaminated water which has passed through the 1 ST function charcoal. そのため、ここではこの層を2 nd機能炭〔AMP/AC〕と呼ぶ。 Therefore, it referred here this layer and 2 nd function charcoal [AMP / AC].

Br 担持活性炭層43は、海水が混入した放射性汚染水であって、1 ST及び2 nd機能炭を通過した放射性汚染水から放射性のヨウ素(Iodine)を除去する。 Br 3 on activated carbon layer 43 is a radioactive contaminated water sea water is mixed to remove radioactive iodine (Iodine) from passing through the 1 ST and 2 nd functional charcoal radioactive contaminated water. そのため、ここではこの層を3 rd機能炭〔KBAC〕と呼ぶ。 Therefore, here referred to as the layer a 3 rd function charcoal [KBAC].

特許文献及び非特許文献に記載してあるように、個々の放射性物質をそれぞれ除染剤で除染することは公知であるが、3種類の機能炭を組み合わせて活性炭除染剤層40とすることで、はじめて海水が混入した放射性汚染水の除染用装置として実用的となる。 As are described in the patent and non-patent literature, it is known to decontaminate each radioactive material in each decontaminating agent, an activated carbon decontaminating agent layer 40 by using three kinds of functions charcoal it is, become practical as the first for decontamination of radioactive contaminated water sea water is mixed device. 今までに海水が混入した放射性汚染水から放射性物質を除染することについての報告はなされていない。 Report about what decontaminating radioactive materials from a radioactive contaminated water sea water is mixed so far has not been made.

これらの機能炭単独あるいは2種の組み合わせのみでは海水が混入した放射性汚染水の除染用装置として有効ではない。 These functions coal alone or with only two combinations are not effective for the decontamination of radioactive contaminated water sea water is mixed device. 上述した3種類の機能炭を組み合わせて活性炭除染剤層を構成することが重要であり、この組み合わせは海水が混入した放射性汚染水の処理方法として注目されなければならない。 A combination of three functions charcoal described above it is important to configure the activated carbon decontaminant layer, this combination must be noted as a method for treating a radioactive contaminated water sea water is mixed.

3種類の組み合わせになるこの活性炭除染剤層40を用いることで一次処理された高レベル放射性汚染水27の放射能を1/100〜1/1000程度に低減することが可能になり、除染剤層40の量や厚み、ならびに処理流量を制御することで、除染効率をさらに向上できる。 Three high-level radioactive radioactivity contaminated water 27 which is primary treated to become the use of activated carbon decontaminant layer 40 combination of it can be reduced to about 1 / 100-1 / 1000, decontamination by controlling the amount and thickness as well as the processing flow, the agent layer 40 can be further improved decontamination efficiency.

浄化塔13の内部には、3 rd機能炭の下流側に活性炭層44を設けて、各機能炭をバックアップするようにしている。 Inside the purification column 13, the activated carbon layer 44 is provided on the downstream side of the 3 rd function charcoal, and to back each function charcoal. ここでは、4 th活性炭〔AC〕と呼ぶ。 In this case, it referred to as the 4 th activated carbon [AC]. このバックアップ層を設けることで4層の活性炭除染層が構成されることになる。 Activated carbon decontamination layer of 4-layer by providing the backup layer is to be configured. このバックアップ用に設けた活性炭層によって海水が混入した他の放射性物質、例えば放射性テクネチウム(Tc−99)などを吸着、除去することが可能になる。 Other radioactive materials sea water is mixed with activated charcoal layer provided for this backup, for example, radioactive technetium (Tc-99) such as adsorption, it is possible to remove. 活性炭層44は、1 st機能炭41の上流側に設けてもよい。 Activated carbon layer 44 may be provided on the upstream side of the 1 st function charcoal 41.

放射性物質の除染装置200の仕様例を示せば次のようになる。 If Shimese specification example of the decontamination apparatus 200 of radioactive material as follows.
〔仕様例〕 [Specification example]

・浄化能力は機能活性炭の使い方や浄化塔サイズあるいは通液条件で変わる。 And purification capacity will vary with usage and purification tower size or passed through conditions of the function activated carbon.
・浄化剤カートリッジ内蔵遠隔システムにより、汚染水貯蓄槽の中でも効率的除染が可能となる。 By-cleaning agent cartridge built remote system, it is possible to efficiently decontaminate among contaminated water savings tank.

以下、各機能炭について説明する。 The following describes each function charcoal.
図3は、オキシン炭の公知の基本反応式を示す。 Figure 3 shows a known basic reaction scheme of oxine charcoal.
本実施例は、オキシン炭〔KMAC〕を、海水が混入した放射性汚染水中のCP、FP、TRUを効果的に除染するのに用いることにした。 This embodiment, oxine charcoal [KMAC], CP radioactive contamination water sea water is mixed, it was decided to use to effectively decontaminate FP, the TRU.

図4は、AMPの公知の基本構造式を示す。 Figure 4 shows a known basic structure of the AMP.
AMPは、Csに対する高い選択的吸着性を有し、そのアルミナ・シリカ担持体はCs分配比が2000〜6000と高い。 AMP has a high selective adsorptivity for Cs, the alumina silica support is Cs distribution ratio is high and 2000 to 6000. 本実施例は、AMPを添着し、坦持させた活性炭を、海水が混入した放射性汚染水中のCsを効果的に除去するのに用いることにした。 This embodiment is impregnated with AMP, activated carbon obtained by carrying sea water has to be used to effectively remove Cs radioactive contamination water mixed.

図5、図6は、Br 担持活性炭〔KBAC〕の公知の機能を示す。 5 and 6 show a known function of the Br 3 on activated charcoal [KBAC].
図5において、放射性ヨウ素の酸化除去反応は次のように示される。 5, oxidation reaction of removing radioactive iodine is shown as follows.
〔放射性ヨウ素( I)酸化除去反応〕 [Radioiodine (* I) oxide removing reaction]
+Br −AC → IBr −AC+Br * I - + Br 3 -AC → * IBr 2 -AC + Br -
CH I+Br −AC → IBr −AC+CH −Br CH 3 - * I + Br 3 -AC → * IBr 2 -AC + CH 3 -Br

図6はBr を担持したBr 担持活性炭の廃液処理効率を示す。 Figure 6 shows a wastewater treatment efficiency Br 3 on activated charcoal carrying Br 3.
本実施例で、Br を担持したBr 担持活性炭〔KBAC〕は、海水が混入した放射性汚染水中のヨウ素を効果的に除去するのに用いることとした。 In this example, Br 3 on activated charcoal carrying Br 3 [KBAC] was set using a radioactive contamination of water iodine sea water is mixed to effectively remove.

本実施例の3種類の機能炭を組み合わせて構成された活性炭除染剤層40(除染剤)の性能確認について説明する。 Performance check of three functions coal consists of the combined activated carbon decontaminant layer of this Example 40 (Josomezai) will be described.

図7は、活性炭除染剤の性能確認のために用いられた装置の概要を示す。 Figure 7 shows an outline of an apparatus used for the performance check of the activated carbon decontaminant.
浄化塔13には、図2に示すと同様にして、上流側の上方から活性炭層〔AC〕、オキシン担持活性炭層〔KMAC〕、AMP担持活性炭層〔AMP/AC〕及びBr 担持活性炭層〔KBAC〕が形成されて活性炭除染剤層が構成され、更に活性炭層〔AC〕が付加され、4層からなる除染剤が構成された。 The purification tower 13, in the same manner as that shown in FIG. 2, the activated carbon layer from above the upstream side [AC], oxine-supporting activated carbon layer [KMAC] AMP supporting activated carbon layer [AMP / AC] and Br 3 on activated charcoal layer [ KBAC] is formed is composed activated carbon decontaminant layer, it is added further active carbon layer [AC], decontaminant comprising four layers is configured.

サンプル sample
原子力発電所事故の現場に近い地区から採取した運搬設備等の洗浄水(洗剤混入)を用いた。 Cleaning water transport facilities taken from the district close to the site of the nuclear power plant accident (detergent mixed) was used.
〔含有放射能:採取日時換算〕多数サンプル採取 l−131:min. [Containing radioactivity: sampling time in terms] multiple sampling l-131: min. 5,800〜max. 5,800~max. 22,000Bq/L 22,000Bq / L
総Cs(Cs−134,136,137):min. Total Cs (Cs-134,136,137): min. 280〜max. 280~max. 750Bq/L 750Bq / L

除染試験 Decontamination test
1)試験サンプル 試験用に上記サンプル複数を混合し、海水10%混入試料も作製 i)試料500ml 1) The sample multiple mixed for testing sample test, the seawater 10% mixed samples were also prepared i) a sample 500ml
ii)試料450ml+実海水50ml(海水10%混合) ii) Samples 450 ml + real seawater 50 ml (10% seawater mixture)
2)カラム試験(図7に示す通り) 2) Column test (as shown in FIG. 7)
カラムサイズ:内径20mmΦ、300mm(長) Column size: inner diameter 20 mm, 300 mm (length)
充填除染剤:上から〔KMAC+AMP/AC+KBAC+AC〕の順に充填 充填高さ21cm、充填容積66cc Filling decontaminant: from the top order filling and height 21cm of [KMAC + AMP / AC + KBAC + AC], the fill volume 66cc
全SV:5h −1 All SV: 5h -1
〔試験結果〕 〔Test results〕


図8は、活性炭除染剤としての活性炭除染剤層による除染の効果を示す。 Figure 8 shows the effect of decontamination with activated carbon decontaminant layer as activated carbon decontaminant. そして、図8は、廃水サンプル(+海水10%混入)についての計測された除染処理前後のγ線スペクトルを示す。 Then, FIG. 8 shows a γ-ray spectra before and after the measured decontamination process for waste water samples (+ 10% seawater contamination).

上述した機能的活性炭の組み合わせによって構成した活性炭除染剤によれば、除染カラム通液前後で図8に示すようなγ線スペクトルが得られ、除染が機能的に効果的になされることが判る。 According to the activated carbon decontaminant constituted by a combination of functional active carbon, which has been described above, the γ-ray spectrum as shown in Figure 8 obtained before and after the decontamination passing through the column, the decontamination is functionally effective done It is seen. 除染効果は次のようである。 Decontamination effect is as follows.
・放射性ヨウ素99%以上除去・放射性セシウム97〜99%除去・オキシン担持活性炭の使用によってCP、FP、TRUを機能的、効果的に除去 And functional CP, FP, the TRU by the use of radioactive 97-99 Iodine 99% removal and radioactive cesium% removal and oxine-supporting activated carbon, effectively removed

上述した例にあっては、図2に示すように、浄化塔13の内部に、オキシン担持活性炭層41、AMP担持炭層42、Br 担持活性炭層43の順に配列配設しているが、この配列配設はこの順でなくて任意の配列配設としても同様の結果が期待できる。 In the example described above, as shown in FIG. 2, the interior of the purification column 13, but are arranged disposed in the order of oxine on activated charcoal layer 41, AMP carrying coal seam 42, Br 3 on activated charcoal layer 43, the sequences provided may be expected similar results as any sequence arrangement not in this order. また、浄化塔1は、各機能炭を収納した独立の3つの浄化塔部を接続することで構成されてもよい。 Further, purification tower 1 may be configured by connecting three purification tower of the independent housing a respective functions charcoal.

また、この例にあっては、3種類の機能炭を層として形成し、これらを組み合わせることで活性炭除染剤層としているが、3種類の機能炭を混合することで混床を形成し、もって活性炭除染剤層を形成して用いることによっても同様の効果が期待できる。 Further, in this example, the three functions charcoal was formed as a layer, although the activated carbon decontaminant layer by combining them to form a mixed bed by mixing the three functions charcoal, have the same effect can be expected also by using forms of activated carbon decontaminant layer.

そして、この構成によれば、海水が混入した放射性汚染水を導入する導入口32及び浄化された水を導出する導出口33を備えた放射性汚染水浄化塔13に、オキシン(8-Hydroxyquinoline)を担持した活性炭と、リンモリブデン酸アンモニウムを担持した活性炭と、Br を担持した活性炭との3種類の機能性活性炭を組み合わせ、混合することで構成した活性炭除染層40としての活性炭除染混床層を設けた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200が構成される。 Then, according to this arrangement, the radioactive contaminated water purification tower 13 provided with an outlet 33 for deriving an inlet port 32 and the purified water is introduced radioactive contaminated water sea water is mixed, oxine (8-hydroxyquinoline) activated carbon carrying, and activated carbon carrying ammonium phosphomolybdate, using three kinds of functionality activated carbon activated carbon carrying Br 3, activated carbon decontamination mixing as active carbon decontamination layer 40 constituted by mixing decontamination apparatus 200 of radioactive material from radioactive contaminated water sea water having a floor layer is mixed is formed.

本実施例は、放射性汚染水に混入する放射能物質の種類や放射能量に応じて、上述の凝集沈殿法である1次処理を行うこと無く、2次系処理であるオキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ添着し、担持させた粗粒の活性炭を充填した浄化塔へ通液することで、海水が混入した放射性汚染水からの放射性物質を効果的に除去する放射性物質除去装置を提供することができる。 This embodiment, depending on the type and the amount of radioactivity radioactive substance mixed radioactive contaminated water, without performing the primary processing is aggregation precipitation method described above, a secondary system processing oxine (8-hydroxyquinoline) , ammonium phosphomolybdate (AMP), the Br 3 respectively impregnated, by passing liquid coarse activated carbon having supported thereon to fill the purification column, effectively radioactive substances from radioactive contaminated water sea water is mixed it is possible to provide a radioactive substance removing device for removing the.

本実施例は、また、上述した3種類の機能性活性炭を組み合わせて構成した活性炭除染剤層の上流側あるいは/ならびに下流側に各種の活性炭層を設けて活性炭除染剤層を構成したことを特徴とする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を提供する。 This embodiment, also, that constitutes the activated carbon decontaminant layer provided upstream or / and various activated carbon layer downstream of the activated carbon decontaminant layer formed by combining three functions activated carbon described above providing decontamination apparatus radioactive substances from radioactive contaminated water sea water is mixed, characterized in.

図1において、濾布あるいは遠心分離機22、23及び放射性浄化塔13から導出された低レベル汚染水45は低レベル汚染水として貯槽5に貯蔵される。 In Figure 1, the low level contaminated water 45 which is derived from the filter cloth or centrifuge 22, 23 and radioactive purification tower 13 is stored in the storage tank 5 as a low level contaminated water. このようにして除染された低レベル汚染水は、汚染チェックして放水48、あるいは更なる高度浄化処理47がなされる。 In this way, the low level contaminated water that has been decontaminated, the tainting to water discharge 48 or further advanced purification process 47, is performed.

図9は、凝集沈殿法と機能性活性炭を適用して、分離除去が可能な元素を示す。 9, by applying the coagulation sedimentation method and functionality activated carbon shows an element capable separated off.
図9から明らかなように、本実施例は、海水成分が共存していても各種の放射性核種を除去することができる。 As apparent from FIG. 9, the present embodiment can be seawater component coexist to remove a variety of radionuclides. KMAC、AMP/AC、KBAC、RHOD及びTR/ACの適用元素については図9が参照されるものとする。 KMAC, AMP / AC, KBAC, with regard to the application elements RHOD and TR / AC shall 9 is referred to.

1…前処理系、2…1次処理系(1次浄化処理)、3…2次処理系(2次浄化処理系)、4…放射性汚染水、5…貯槽、12…凝集沈殿分離槽、13…放射性汚染水浄化槽(浄化塔)、26…中レベル汚染水、27…放射性汚染水、32…導入口、33…導出口、40…活性炭除染層(除染剤)、41…オキシン担持活性炭層(1 st機能炭〔KMAC〕)、42…AMP担持活性炭層(2 nd機能炭〔AMP/AC〕)、43…Br 担持活性炭層(3 rd機能炭〔KBAC〕)、44…活性炭層(4 th活性炭〔AC〕)、100…放射性物質の除去装置、200…放射性物質の除染装置。 1 ... pretreatment system, 2 ... primary treatment system (primary purification treatment), 3 ... secondary processing system (secondary purification treatment system), 4 ... radioactive contaminated water, 5 ... storage tank, 12 ... flocculation separation tank, 13 ... radioactive contaminated water Septic (purification column), 26 ... medium level contaminated water, 27 ... radioactive contaminated water, 32 ... inlet, 33 ... outlet, 40 ... Activated carbon decontamination layer (Josomezai), 41 ... oxine bearing activated carbon layer (1 st function charcoal [KMAC]), 42 ... AMP on activated carbon layer (2 nd function charcoal [AMP / AC]), 43 ... Br 3 on activated carbon layer (3 rd function charcoal [KBAC]), 44 ... Activated carbon layer (4 th activated carbon [AC]), 100 ... removal of radioactive material device, 200 ... decontamination apparatus of radioactive material.

Claims (6)

  1. 海水が混入した放射性汚染水に、オキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ担持させた細粒の活性炭を投入し、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)、Cs(セシウム)、Iodine(ヨウ素)を捕捉し、ロジゾン酸の粉末あるいは溶液を添加して放射性Sr(ストロンチウム)、Ba(バリウム)とキレート化し、それらを沈殿剤で凝集沈殿させる1次浄化処理系、さらに1次浄化処理系で処理した放射性汚染水についてオキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ担持させた粗粒の活性炭を充填した浄化塔へ通液する2次浄化処理系からなることを特徴とする、海水 Radioactive contaminated water seawater is mixed, oxine (8-hydroxyquinoline), ammonium phosphomolybdate (AMP), was charged with activated carbon granules which was supported Br 3, respectively, radioactive CP (radioactive corrosion products), FP (radioactive fission products), TRU (transuranic elements such including uranium: U, Pu, Am, Cm), Cs (cesium), to capture iodine (iodine), radioactive by adding powder or solution of rhodizonate sr (strontium), chelating and Ba (barium), their primary purification treatment system for aggregating precipitated with a precipitating agent, further 1 for primary purification treatment system treated with radioactive contaminated water oxine (8-hydroxyquinoline), phosphomolybdic acid ammonium (AMP), characterized in that it consists of secondary purification treatment system for passing liquid Br 3 to purifying tower filled with coarse grains of the activated carbon having supported thereon respectively, seawater 混入した放射性汚染水からの放射性物質の除去装置。 Removal apparatus of radioactive material from contaminating radioactive contaminated water.
  2. 海水が混入した放射性汚染水を導入する導入口及び浄化された水を導出する導出口を備えた放射性汚染水浄化塔に、オキシン(8-Hydroxyquinoline)を担持させた活性炭で形成したオキシン担持活性炭層と、リンモリブデン酸アンモニウム(AMP)を担持させた活性炭で形成したAMP担持活性炭層と、Br を担持させた活性炭で形成したBr 担持活性炭層との3種類の機能性活性炭層を組み合わせて積層構成した活性炭除染剤層を設けたことを特徴とする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。 The seawater having a conductive outlet to derive inlet and purified water introducing radioactive contaminated water which is mixed radioactive contaminated water purification tower, oxine-supporting activated carbon layer formed in the activated carbon having supported thereon a oxine (8-hydroxyquinoline) When, in combination with AMP activated carbon carrying layer formed by activated carbon was supported ammonium phosphomolybdate (AMP), the three functions of the activated carbon layer between Br 3 on activated charcoal layer formed by activated carbon was supported Br 3 decontamination apparatus radioactive substances from radioactive contaminated water seawater is mixed, characterized in that a laminated structure with activated carbon decontaminant layer.
  3. 請求項2において、前記3種類の機能性活性炭層を組み合わせて積層構成した活性炭除染剤層の上流側あるいは/及び下流側に活性炭層を設けて活性炭除染剤層を構成したことを特徴とする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。 According to claim 2, and characterized in that provided an activated carbon layer is made of activated carbon decontaminant layer on the upstream side or / and downstream of the activated carbon decontaminant layer laminated structure by combining the three types of functional active carbon layer decontamination apparatus radioactive substances from radioactive contaminated water seawater is mixed to.
  4. 海水が混入した放射性汚染水を導入する導入口及び浄化された水を導出する導出口を備えた放射性汚染水浄化塔に、オキシン(8-Hydroxyquinoline)を担持したオキシン担持活性炭と、リンモリブデン酸アンモニウムを担持させたAMP担持活性炭と、Br を担持させたBr 担持活性炭との3種類の機能性活性炭を組み合わせ、混合することで構成した活性炭除染混床層を設けたことを特徴とする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。 The seawater having a conductive outlet to derive inlet and purified water introducing radioactive contaminated water which is mixed radioactive contaminated water purification tower, and oxine-supporting activated carbon carrying oxine (8-hydroxyquinoline), ammonium phosphomolybdate and AMP supported activated carbon was supported, combines three functions activated carbon with Br 3 supported activated carbon was supported Br 3, characterized in that a charcoal decontamination mixed bed layer constituted by mixing decontamination apparatus radioactive substances from radioactive contaminated water seawater is mixed.
  5. 請求項2から4のいずれかに記載した放射性物質の除染装置が用いられて、海水が混入した放射性汚染水から、前記オキシン担持活性炭で、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)を除去し、AMP担持活性炭で、放射性のCsを除去し、Br 担持活性炭で、放射性のヨウ素を除去することを特徴とする海水が混入した放射性汚染水からの放射性物質の除染方法。 And it is used decontamination apparatus of radioactive material as claimed in any one of claims 2 to 4, from a radioactive contaminated water seawater is mixed, in the oxine on charcoal, radioactive CP (radioactive corrosion products), FP (radioactive fission products), TRU (transuranic elements such including uranium: U, Pu, Am, to remove the Cm), with AMP-supporting activated carbon, to remove Cs radioactive, with Br 3 on charcoal, removing radioactive iodine decontamination method of radioactive substances from radioactive contaminated water seawater is mixed, characterized by.
  6. 海水が混入した放射性汚染水に、オキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ担持させた細粒の活性炭を投入し、放射性のCP(放射性腐食生成物)、FP(放射性核分裂生成物)、TRU(ウランを含む超ウラン元素類:U、Pu、Am、Cm)、Cs(セシウム)、Iodine(ヨウ素)を捕捉し、ロジゾン酸(RHOD)の粉末あるいは溶液を添加して放射性Sr(ストロンチウム)、Ba(バリウム)とキレート化し、それらを沈殿剤で凝集沈殿させて1次浄化処理し、さらに1次浄化処理した放射性汚染水についてオキシン(8-Hydroxyquinoline)、リンモリブデン酸アンモニウム(AMP)、Br をそれぞれ担持した粗粒の活性炭を充填した浄化塔へ通液する2次浄化処理することからなることを特徴とす Radioactive contaminated water seawater is mixed, oxine (8-hydroxyquinoline), ammonium phosphomolybdate (AMP), was charged with activated carbon granules which was supported Br 3, respectively, radioactive CP (radioactive corrosion products), FP (radioactive fission products), TRU (transuranic elements such including uranium: U, Pu, Am, Cm), Cs (cesium), to capture iodine (iodine), adding a powder or solution of rhodizonate (RHOD) radioactive Sr (strontium) and, chelating and Ba (barium), they were primary purification treatment by flocculation with a precipitating agent, oxine for further primary cleaning process radioactive contaminated water (8-hydroxyquinoline), phosphomolybdic be characterized in that it consists of secondary purification process for passing liquid ammonium (AMP), Br 3 a to purifying tower filled with loaded with coarse activated carbon, respectively 、海水が混入した放射性汚染水からの放射性物質の除去方法。 , Method of removing radioactive materials from radioactive contaminated water seawater is mixed.
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