JPS63261200A - Solidifying processing method of spent ion exchange resin - Google Patents
Solidifying processing method of spent ion exchange resinInfo
- Publication number
- JPS63261200A JPS63261200A JP9473387A JP9473387A JPS63261200A JP S63261200 A JPS63261200 A JP S63261200A JP 9473387 A JP9473387 A JP 9473387A JP 9473387 A JP9473387 A JP 9473387A JP S63261200 A JPS63261200 A JP S63261200A
- Authority
- JP
- Japan
- Prior art keywords
- exchange resin
- ion exchange
- resin
- cement
- electrolyte
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 title claims description 67
- 239000003456 ion exchange resin Substances 0.000 title claims description 54
- 229920003303 ion-exchange polymer Polymers 0.000 title claims description 54
- 238000003672 processing method Methods 0.000 title 1
- 239000011347 resin Substances 0.000 claims description 43
- 229920005989 resin Polymers 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 239000003729 cation exchange resin Substances 0.000 claims description 16
- 239000003792 electrolyte Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 239000003957 anion exchange resin Substances 0.000 claims description 12
- 150000001768 cations Chemical class 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 150000001450 anions Chemical class 0.000 claims description 7
- 150000002500 ions Chemical class 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 38
- 239000004568 cement Substances 0.000 description 31
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 238000003756 stirring Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000011049 filling Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 229910001414 potassium ion Inorganic materials 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- -1 iodine ions Chemical class 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002901 radioactive waste Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- XDFCIPNJCBUZJN-UHFFFAOYSA-N barium(2+) Chemical compound [Ba+2] XDFCIPNJCBUZJN-UHFFFAOYSA-N 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000004815 dispersion polymer Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229920000260 silastic Polymers 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は原子力施設から発生する放射性廃棄物である使
用済イオン交換樹脂を同化処理するのに好適な方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method suitable for assimilating spent ion exchange resin, which is radioactive waste generated from nuclear facilities.
原子力発電所から発生する放射性廃液は、イオン交換樹
脂を用いて処理されている。これに伴って生ずる使用済
イオン交換樹脂は、原子力発電所で発生する放射性廃棄
物量のかなシの部分を占めている。このため、この使用
済イオン交換樹脂の処理が、原子力発電所の運転上の課
題の１つとされている。Radioactive waste fluid generated from nuclear power plants is treated using ion exchange resins. The spent ion-exchange resin generated in this process accounts for a large portion of the amount of radioactive waste generated at nuclear power plants. Therefore, processing of this used ion exchange resin is considered to be one of the operational issues of nuclear power plants.
従来、この使用済イオン交換樹脂はセメント。Conventionally, this used ion exchange resin was made from cement.
アスファルトあるいはシラスチック等の固化剤と混合し
てドラム缶中に固化され、施設内に貯蔵保管されている
。しかし、セメント固化体については樹脂の充填量が３
０ｋｇ−樹脂／２ｏＯｌ固化体と低く、減容性が良くな
いため、保管場所の確保が問題になっている。また、ア
スファルト［１化体及びプラスチック固化体については
、より長期的耐久性の向上という見地から、無機物の固
化剤を用いる固化方法に移行しようとする動きがある。It is mixed with a solidifying agent such as asphalt or silastic, solidified in drums, and stored within the facility. However, for solidified cement, the filling amount of resin is 3
Since the solidified material is as low as 0kg-resin/2oOl and has poor volume reduction properties, securing a storage space is a problem. In addition, with regard to asphalt [monocarbons] and solidified plastics, there is a movement to shift to solidification methods that use inorganic solidification agents from the standpoint of improving long-term durability.
以上のような、減容及び無機化という観点から、使用済
イオン交換樹脂を粉末被レット化して固化する技術や、
イオン交換樹脂を熱分解して無機化し固化する技術（特
願昭５９−１６００９６号）が開発された。As mentioned above, from the viewpoint of volume reduction and mineralization, there is a technology to turn used ion exchange resin into powder pellets and solidify them,
A technique (Japanese Patent Application No. 160096/1982) was developed to thermally decompose ion exchange resin to make it inorganic and solidify it.
ところで、最近になって、将来プラントに対応した高経
済性の廃棄物処理システムを開発するために、現在の廃
棄物処理システムを見直し、よシ簡易化、低コスト化が
要求されるようになった。By the way, recently, in order to develop a highly economical waste treatment system suitable for future plants, it has become necessary to review the current waste treatment system and make it simpler and lower in cost. Ta.
しかるに、使用済イオン交換樹脂を粉末ベレット化して
固化する技術や熱分解して無機化し固化する技術は、減
容性及び安全性の点からは非常に優れた技術であるが、
直接イオン交換樹脂をセメント等の固化剤で固化する技
術よシもプロセスが多いため、コストが高くなる問題が
ある。一方、従来のセメントによる使用済イオン交換樹
脂の直接固化体では、充填量が３０に９−樹脂／２００
１固化体と低いのが問題点である。However, the technology of converting used ion exchange resin into powder pellets and solidifying it, and the technology of thermally decomposing it to make it inorganic and solidifying it, are very excellent technologies from the standpoint of volume reduction and safety.
The technology of directly solidifying the ion exchange resin with a solidifying agent such as cement has the problem of high costs because it requires many processes. On the other hand, in the case of direct solidification of used ion exchange resin using conventional cement, the filling amount is 30 to 9-resin/200.
The problem is that it is as low as 1 solidified body.
本発明の目的は、低コストでかつ使用済イオン交換樹脂
充填量の高い固化体作製を可能にする使用済イオン交換
樹脂の固化処理方法を提供するにある。An object of the present invention is to provide a method for solidifying a used ion exchange resin that enables production of a solidified body with a high filling amount of used ion exchange resin at low cost.
本発明による使用済イオン交換樹脂の固化処理方法は、
使用済イオン交換樹脂に予め電解質を添加して、使用済
陽イオン交換樹脂には陽イオンを、使用済陰イオン交換
樹脂には陰イオンを、使用済陽イオン交換樹脂または使
用済陰イオン交換樹脂１ｙ−（乾燥重量）当、９０．３
ミ！Ｊモル以上の割合で、イオン吸着させた後に、セ
メント等の固化剤と混合して固化させることを特徴とす
るものである。The method for solidifying used ion exchange resin according to the present invention includes:
Add an electrolyte to the used ion exchange resin in advance to add cations to the used cation exchange resin and anions to the used anion exchange resin. Used cation exchange resin or used anion exchange resin 1y-(dry weight), 90.3
Mi! It is characterized by adsorbing ions at a ratio of J mol or more and then mixing with a solidifying agent such as cement to solidify.
本発明は、水を吸収して膨潤した使用済イオン交換樹脂
に電解質を添加すると、カチオン交換樹脂にはカチオン
が吸着し、アニオン交換樹脂にはアニオンが吸着して、
樹脂中の自由水が脱１ｆｉｆＩ ｌ〜で、樹脂が収縮す
る性質に着目した。In the present invention, when an electrolyte is added to a used ion exchange resin that has absorbed water and swelled, cations are adsorbed to the cation exchange resin, and anions are adsorbed to the anion exchange resin.
We focused on the property that the resin contracts when the free water in the resin is removed.
第２図は、いわゆる水切シをした粒状イオン交換樹脂（
樹脂中の含水率が４０〜６０チの範囲）に電解質として
ヨウ化カリウムを添加し、添加後攪拌して、その時の添
加ヨウ化カリウム量と樹脂体積の関係を測定した結果で
ある。第２図中の黒丸はカチオン交換樹脂にヨウ化カリ
ウムを添加した場合であシ、第２図中の白丸はアニオン
交換樹脂にヨウ化カリウムを添加した場合である。同図
から、カチオン交換樹脂もアニオン交換樹脂も、添加し
たヨウ化カリウムの量が０．３ミリモル／ｙ−−樹脂以
上になると、共に体積が大幅に収縮し、それぞれ約３０
ｆＯ及び約４０係減少することがわかる。Figure 2 shows a granular ion exchange resin (
The results are obtained by adding potassium iodide as an electrolyte to a resin (with a water content in the range of 40 to 60 inches), stirring after the addition, and measuring the relationship between the amount of potassium iodide added and the resin volume. The black circles in FIG. 2 are the cases in which potassium iodide was added to the cation exchange resin, and the white circles in FIG. 2 are the cases in which potassium iodide was added to the anion exchange resin. From the same figure, both the cation exchange resin and the anion exchange resin shrink significantly in volume when the amount of added potassium iodide exceeds 0.3 mmol/y-resin, and each
It can be seen that fO decreases by a factor of about 40.
第３図は、カチオン交換樹脂にカチオンであるカリウム
イオンが吸着して、カチオン交換樹脂が収縮する現象を
模式的に示した図である。カチオン交換樹脂にヨウ化カ
リウムを添加して攪拌すると、カチオン交換樹脂１に含
丑れる水によシ、ヨウ化カリウムが次式のように解離す
る。FIG. 3 is a diagram schematically showing a phenomenon in which potassium ions, which are cations, are adsorbed onto a cation exchange resin and the cation exchange resin contracts. When potassium iodide is added to the cation exchange resin and stirred, the potassium iodide is dissociated by the water contained in the cation exchange resin 1 as shown in the following formula.
ＫＩ → Ｋ＋＋ Ｉ”−（］）
解離したカリウムイオン（Ｋ＋）２が、第３図に示すよ
うにカチオン交換樹脂１に吸着する。カチオン交換樹脂
１の表面にカリウムイオン２が吸着すると、樹脂の内部
と樹脂の外部との間に浸透圧差が発生し、カリウムイオ
ン濃度を薄める方向、すなわち樹脂中の自由水３が樹脂
内部から樹脂外部へ移動し、樹脂中の自由水３が樹脂中
から抜けるために、樹脂体積が減少すると考えられる。KI → K++ I”-(]) Dissociated potassium ions (K+) 2 are adsorbed on the cation exchange resin 1 as shown in Fig. 3. When the potassium ions 2 are adsorbed on the surface of the cation exchange resin 1, the resin An osmotic pressure difference occurs between the inside and the outside of the resin, diluting the potassium ion concentration, that is, the free water 3 in the resin moves from the inside of the resin to the outside of the resin, and the free water 3 in the resin escapes from the resin. Therefore, the resin volume is thought to decrease.
また、アニオン交換樹脂の場合も、ヨウ素イオン（ニー
）が吸着し、同様の現象によシアニオン交換樹脂の体積
が収縮すると考えられる。Further, in the case of anion exchange resin as well, iodine ions (ni) are adsorbed, and the volume of the cyanion exchange resin is thought to shrink due to a similar phenomenon.
以上の結果と同様の結果は、樹脂の収縮容積に若干の差
はあるものの、ヨウ化カリウム（ＫＩ）ばかシでなく、
多くの電解質を添加した場合に認められた。カチオン（
陽イオン）に関しては、カリウム（Ｋ＋）のほかに、ア
ンモニウム（ＮＨ４＋）、ナトリウム（Ｎａ、” ）
、リチウム（Ｌ＋）、バリウム（Ｂａ２＋）、カルシウ
ム（Ｃａ２＋）、マグネシウム（Ｍｇ２＋）、銀（Ａｇ
＋） 、ストロンチウム（ｓｒ２＋ ）、セシウム（Ｃ
ｓ＋）等に認められた。アニオン（陰イオン）に関して
は、ヨウ素（■″′）のほか、臭素（Ｂｒ−） 、硝酸
イオン（Ｎｏ３−）、亜硝酸イオン（ＮＯ２−）、塩素
（ｃｔ−） 、炭酸水素イオン（）ＩＣＯ，−）、硫酸
イオン（ｓｏ４’Ｌ炭酸イオン（ＣＯ３” ）、リン酸
イオン（ＰＯ４３−）等に認められた。従って、以上の
いずれかのイオンを含む電解質を使用しても、本発明は
可能である。Results similar to those above indicate that although there is a slight difference in the shrinkage volume of the resin, potassium iodide (KI)
This was observed when a large amount of electrolyte was added. Cation (
Regarding cations), in addition to potassium (K+), ammonium (NH4+), sodium (Na, ")
, lithium (L+), barium (Ba2+), calcium (Ca2+), magnesium (Mg2+), silver (Ag
+), strontium (sr2+), cesium (C
s+) etc. Regarding anions, in addition to iodine (■'''), bromine (Br-), nitrate ion (No3-), nitrite ion (NO2-), chlorine (ct-), hydrogen carbonate ion ()ICO . It is possible.
以上の結果から、使用済カチオン交換樹脂にはカチオン
を、使用済アニオン交換樹脂にはアニオンを、樹脂１？
（乾燥重量）当、！ｌ） ０．３ ミ’Ｊモル以上予め
吸着させて、樹脂体積を収縮させた後に、セメント等の
固化剤を添加して同化体を作製すれば、プロセスが簡単
なため低コストで従来のセメント固化体よシ樹脂充填量
の多い固化体を作製できることがわかる。From the above results, we found that cations were added to the used cation exchange resin, anions were added to the used anion exchange resin, and resin 1?
(Dry weight)! l) By adsorbing 0.3 mmol or more in advance to shrink the resin volume, and then adding a solidifying agent such as cement to create an assimilate, the process is simple and can be used at low cost compared to conventional cement. It can be seen that a solidified body with a large amount of resin filling can be produced.
実施例１
以下、本発明の一実施例を第１図によシ説明する。本実
施例は、原子力発電所のν水浄化系から発生する使用済
イオン交換樹脂をペレット化せず直接、セメント固化処
理するものであシ、第１図はその処理システムの系統図
である。スラリー状で輸送されてきた粒状使用済イオン
交換樹脂４は、金網状の簡易ν過装置５によシ、いわゆ
る水切シの状態（イオン交換樹脂中の含水率が約５０チ
）になる。水切シ状態のイオン交換樹脂は圧縮空気によ
って、イオン交換樹脂前処理タンク６に送られる。イオ
ン交換樹脂前処理タンク６内では、電解質供給部７から
炭酸カルシウム約１．５ ｋｇが、圧縮空気で送られて
きた含水率約５０％のイオン交換樹脂１００Ｘ？（乾燥
重量で５０ｋｇ、カチオン樹脂／アニオン樹脂−２／１
）と攪拌混合される。Embodiment 1 An embodiment of the present invention will be described below with reference to FIG. In this embodiment, spent ion exchange resin generated from a ν water purification system of a nuclear power plant is directly solidified into cement without being pelletized. FIG. 1 is a system diagram of the treatment system. The granular used ion exchange resin 4, which has been transported in the form of a slurry, is passed through a wire-mesh-like simple filtration device 5 and is brought into a so-called drained state (water content in the ion exchange resin is approximately 50%). The drained ion exchange resin is sent to the ion exchange resin pretreatment tank 6 by compressed air. In the ion exchange resin pretreatment tank 6, about 1.5 kg of calcium carbonate is fed from the electrolyte supply section 7 using compressed air, and the ion exchange resin 100X? has a water content of about 50%. (Dry weight: 50 kg, cationic resin/anionic resin - 2/1
) is stirred and mixed.
一方、セメント混線タンク８では、ポルトランド七メン
）１２０′Ｋｇに水３０ゆが混合され、必要に応じて減
水剤及びポリマーディスパージョン等のセメント混和剤
がセメントに対して数チ程度添加される。炭酸カルシウ
ムが添加され、自由水が離脱して収縮したタンク６内の
イオン交換樹脂と、適当に混練されたタンク８内のセメ
ントは、共に主攪拌タンク９に送られ、主攪拌タンク９
内の攪拌羽根１０によって攪拌される。この結果、セメ
ントとイオン交換樹脂は均一に混合され、いわゆるスラ
リー状になる。スラリー状の樹脂の混合したセメントは
、輸送ポンプ１１によシ、２００７ドラム缶１２内に送
られ、充填される。このドラム缶を室温で約７日から２
８日間養生することによシ、使用済イオン交換樹脂入シ
セメント固化体が作製できる。On the other hand, in the cement mixing tank 8, 120 kg of Portland water is mixed with 30 kg of water, and if necessary, several centimeters of cement admixtures such as water reducing agents and polymer dispersions are added to the cement. . The ion exchange resin in the tank 6, which has been contracted due to the addition of calcium carbonate and the release of free water, and the suitably kneaded cement in the tank 8 are both sent to the main stirring tank 9.
It is stirred by the stirring blade 10 inside. As a result, the cement and ion exchange resin are mixed uniformly, forming a so-called slurry. Cement mixed with slurry resin is sent into a 2007 drum 12 by a transport pump 11 and filled therein. Store this drum at room temperature for about 7 to 2 days.
By curing for 8 days, a solidified cement containing used ion exchange resin can be produced.
以上のように、イオン交換樹脂乾燥重量５０ｋｇに対し
て、電解質である炭酸カルシウムを約０．３ｍｍｏｌ／
ｙ−樹脂、すなわち１．５ ｋｇ添加して、使用済イオ
ン交換樹脂を収縮させた後、水と混練しであるセメント
を加え、棉シ混ぜた結果、２００１固化体中に約６０ｋ
ｇの使用済イオン交換樹脂を、粉末ペレット化せずに、
直接セメント固化する事ができた。すなわち、従来のセ
メント固化体の充填量である３０ｋｌｉ＋−樹脂／２０
０１固化体の約２倍の充填量が可能になった。また、樹
脂のペレット化や無機化（熱分解）等のプロセスが不要
になるので、低コスト化が可能になった。As mentioned above, calcium carbonate, which is an electrolyte, is added at a rate of approximately 0.3 mmol per 50 kg of ion exchange resin dry weight.
After adding Y-resin, i.e. 1.5 kg, and shrinking the used ion exchange resin, cement, which is kneaded with water, was added and mixed with cotton, resulting in approximately 60 kg in the 2001 solidified material.
g of used ion exchange resin without turning it into powder pellets,
It was possible to solidify the cement directly. That is, the filling amount of the conventional cement solidified body is 30 kli + - resin/20
It became possible to fill approximately twice the amount of 01 solidified material. Additionally, processes such as pelletization and inorganicization (thermal decomposition) of the resin are no longer necessary, making it possible to reduce costs.
本実施例の特徴として、水に対して難溶性の電解質であ
る炭酸カルシウムを用いているため、養生後の固化体が
非常に耐水性に優れているという事があげられる。描初
炭酸カルシウムは水に対して難溶性なので（２）式のよ
うに解離する速度が極めて小さく、イオンには解離しに
くいため、樹脂は収縮しないと考えた。A feature of this example is that since calcium carbonate, which is an electrolyte that is sparingly soluble in water, is used, the solidified material after curing has excellent water resistance. Since calcium carbonate is poorly soluble in water, the dissociation rate is extremely low as shown in equation (2), and it is difficult to dissociate into ions, so it was thought that the resin would not shrink.
ＣａＣ０−＋Ｃａ ＋ ＣＯｓ’−（２）しかし
、実際に使用済イオン交換樹脂（カチオン：アニオン−
２：１）中に炭酸カルシウムを添加すると樹脂は収縮す
ることが示された。これは、最初にカチオン交換樹脂に
カルシウムイオンが吸着して、（２）式の平衡系からＣ
ａ２＋ （カルシウムイオン）が失われるため、（２）
式の反応は右側に進み、更に炭酸イオン（ＣＯ３′−）
がアニオン交換樹脂に吸着されて収縮するためである事
が確認された。以上のように、本実施例によれば、耐水
性の優れた固化体を作製できるという効果もある。CaC0-+Ca + COs'-(2) However, actually used ion exchange resin (cation: anion-
2:1) was shown to cause the resin to shrink. This is because calcium ions are first adsorbed on the cation exchange resin, and C from the equilibrium system of equation (2).
Because a2+ (calcium ion) is lost, (2)
The reaction in the equation proceeds to the right, and further carbonate ions (CO3'-)
It was confirmed that this was due to the adsorption of the anion exchange resin and contraction. As described above, according to this example, a solidified body having excellent water resistance can be produced.
実施例２
本実施例は電解質水溶液によって使用済イオン交換樹脂
を収縮させた後に固化処理するものであシ、第４図は本
実施例を説明するための処理システム図である。スラリ
ー状で輸送されてきた粒状使用済イオン交換樹脂４は、
金網状の簡易済過装置５上に置かれる。ヨウ化カリウム
水溶液は濃度調整タンク１３によシ、一定濃度に調節さ
れる。Example 2 In this example, a used ion exchange resin is solidified after being shrunk with an electrolyte aqueous solution. FIG. 4 is a processing system diagram for explaining this example. The granular used ion exchange resin 4 that has been transported in the form of slurry is
It is placed on a wire-mesh-like simple passing device 5. The potassium iodide aqueous solution is adjusted to a constant concentration in a concentration adjustment tank 13.
所定濃度になったヨウ化カリウム水溶液は、循環ポンプ
１４によシ循環され、簡易濾過装置５内のイオン交換樹
脂層に供給される。イオン交換樹脂１００ｋｇ（乾燥重
量で５０ｋｌｉ＋、カチオン樹脂／アニオン樹脂−２／
１）に吸着されたヨウ素イオン（工″″）とカリウムイ
オン（Ｋ＋）の量は、ヨウ化カリウム水溶液の濃度をイ
オン濃度測定器１５によシ測定することによって求めら
れる。ヨウ化カリウムを吸着して収縮した使用済イオン
交換樹脂は、樹脂に対してＯ，３ミリモル／９− 樹
脂以上のＩ−とに＋が吸着された事を確認した後、主攪
拌タンク９に送られる。一方、セメント混練タンク８で
は、ポルトランドセメント１２０ｋｇに水３０ｋｇが混
合され、必要に応じて減水剤及びポリマーディスパージ
ョン等の混和剤をセメントに対して数％程度添加される
。ポルトランドセメントは適当に混練された後、主攪拌
タンク９に送られる。主攪拌タンク９では使用済イオン
交換樹脂と共に、攪拌羽根１０によって攪拌される。こ
の結果、セメントと使用済イオン交換樹脂は均一に混合
され、いわゆるスラリー状になる。樹脂が混合したスラ
リー状のセメントは、輸送ポンｆ１．１によシ、２００
１ドラム缶１２内に送られ充填される。このドラム缶を
室温で約７日から２８日間養生することによシ、イオン
交換樹脂入如固化体が作製できる。The potassium iodide aqueous solution having a predetermined concentration is circulated by the circulation pump 14 and supplied to the ion exchange resin layer in the simple filtration device 5. 100 kg of ion exchange resin (50 kli+ in dry weight, cation resin/anion resin-2/
The amounts of iodine ions (K) and potassium ions (K+) adsorbed in 1) are determined by measuring the concentration of the potassium iodide aqueous solution using the ion concentration measuring device 15. The used ion exchange resin that has adsorbed potassium iodide and shrunk is transferred to the main stirring tank 9 after confirming that more I- and + have been adsorbed to the resin than O, 3 mmol/9- resin. Sent. On the other hand, in the cement kneading tank 8, 120 kg of Portland cement is mixed with 30 kg of water, and if necessary, admixtures such as a water reducing agent and a polymer dispersion are added in an amount of about several percent to the cement. After being mixed properly, the Portland cement is sent to the main stirring tank 9. In the main stirring tank 9, the resin is stirred together with the used ion exchange resin by a stirring blade 10. As a result, the cement and the used ion exchange resin are mixed uniformly, forming a so-called slurry. Slurry cement mixed with resin is transported by transport pump f1.1, 200
One drum 12 is sent and filled. By curing this drum at room temperature for about 7 to 28 days, a solidified body containing ion exchange resin can be produced.
以上のように、使用済イオン交換樹脂乾燥重量５０ｋｇ
に対して、０．３ミリモル／？−樹脂のニー及びＫをそ
れぞれアニオン交換樹脂及びカチオン交換樹脂に吸着さ
せて樹脂を収縮させた後、水と混練したセメントを加え
練り混ぜた結果、２００１固化体中に約６０ｋｇの使用
済イオン交換樹脂を直接固化する事ができた。すなわち
従来のセメント固化の約２倍の樹脂充填量が可能になっ
た。また、プロセスの簡略化からコスト低減になるとい
う効果も認められた。また、本実施例ではイオン吸着が
固相液相間で行われるため、使用済イオン交換樹脂とイ
オンとの接触面積が犬きくなシ吸着速度が速くなるとい
う効果も得られる。As mentioned above, the dry weight of used ion exchange resin is 50 kg.
0.3 mmol/? - After adsorbing resin K and K to an anion exchange resin and a cation exchange resin respectively and shrinking the resin, cement mixed with water was added and mixed, resulting in about 60 kg of used ion exchange in the 2001 solidified body. It was possible to directly solidify the resin. In other words, it has become possible to fill the amount of resin approximately twice as much as with conventional cement solidification. Additionally, the effect of reducing costs due to process simplification was also recognized. Further, in this example, since ion adsorption is performed between the solid phase and the liquid phase, the contact area between the used ion exchange resin and the ions is small, and the adsorption speed is increased.
なお、すでに〔作用〕の項で記したように、カチオンで
はＣａ、Ｋ のほか、ＮＨ、Ｎａ 、Ｌｉ。As already mentioned in the [Operation] section, cations include NH, Na, and Li in addition to Ca and K.
Ｂａ” 、 Ｍｇ２＋、 Ａ、ｇ＋、 Ｓｒ” 、 Ｃ
ｓ＋等からなるいずれの電解質でも、また、アニオンで
はＣｏ３” 、 Ｉ−のほかにＢｒ−、ＮＯ３−、ＮＯ
２−、Ｃ１−、ＨＣＯ３−＋ｓｏ ２’−、ｐｏ４３−
等からなるいずれの電解質でも用いることが可能である
。Ba", Mg2+, A, g+, Sr", C
Any electrolyte consisting of s+, etc., and anions such as Co3", I-, Br-, NO3-, NO
2-, C1-, HCO3-+so 2'-, po43-
It is possible to use any electrolyte consisting of the following.
また、上記の実施例はバッチ式の装置を用いて固化体を
作製する方法であるが、本発明は勿論連続処理方式の固
化体作製方法にも有効である。Further, although the above embodiment is a method for producing a solidified body using a batch type apparatus, the present invention is of course also effective for a continuous processing type method for producing a solidified body.
更に、上記の実施例では固化剤としてセメントを用いた
が、他の固化剤、例えばプラスチックやガラス固化剤を
用いても本発明は有効である。Furthermore, although cement was used as the solidifying agent in the above embodiments, the present invention is also effective even if other solidifying agents such as plastics or vitrification agents are used.
ｔｌす１
また上記の実施例は粒状イオン交換樹脂の場合であるが
、当然粉状イオン交換樹脂に対しても、本発明は有効で
ある。tlS1 Furthermore, although the above embodiments are for granular ion exchange resins, the present invention is of course effective also for powdered ion exchange resins.
粒状使用済イオン交換樹脂のセメント固化体を本発明に
より作製する場合に、理論的には約７０ｋｇ−乾燥重量
／２００１固化体の樹脂充填量が可能であるが、２００
１固化体中Ｋ ７０ ｋｇ（乾燥重量）の樹脂を充填す
ると、圧縮強度等の固化体強度が低下するだめ、廃棄物
固化体としては不適当である。しかし、セメントとの親
和力（結合力）が強く、セメントの中に均一に分散でき
、かつ引張強度の強い細い繊維状の素材を用い、固化体
中のセメントコンクリート部分に上記素材を混合するこ
とによって、コンクリート部分に強い骨格が形成され、
強度の大きい固化体を作製することｉｒ可能である。こ
のような上記素材を使用すれば、本発明によシ、２００
１固化体中に７０ｋｇの樹脂（乾燥重量）を充填するこ
とも実現しうる。When producing a cement solidified body of granular used ion exchange resin according to the present invention, it is theoretically possible to have a resin filling amount of about 70 kg - dry weight/2001 solidified body.
If one solidified body is filled with K 70 kg (dry weight) of resin, the strength of the solidified body, such as compressive strength, will decrease, making it unsuitable for use as a solidified waste body. However, by using a thin fibrous material that has a strong affinity (binding force) with cement, can be uniformly dispersed in cement, and has strong tensile strength, and by mixing the above material into the cement concrete part of the solidified body. , a strong skeleton is formed in the concrete part,
It is possible to produce a solidified body with high strength. If such the above-mentioned material is used, according to the present invention, 200
It is also possible to fill one solidified body with 70 kg of resin (dry weight).
本発明によれば、低コストの簡易なプロセスで、使用済
イオン交換樹脂の充填量が大きい固化体を作製すること
が可能である。すなわち、本発明によれば従来のセメン
ト同化体の約２倍の使用済イオン交換樹脂を充填するこ
とが可能である。According to the present invention, it is possible to produce a solidified body containing a large amount of used ion exchange resin with a simple process at low cost. That is, according to the present invention, it is possible to fill approximately twice as much used ion exchange resin as conventional cement assimilates.
第１図は本発明の一実施例のだめの処理システムを示す
系統図、第２図は添加電解質量とイオン交換樹脂体積の
減少との関係を示す図、第３図は本発明におけるイオン
交換樹脂体積減少を説明するだめの模式図、第４図は本
発明の他の実施例のための処理システムの系統図である
。
４・・・使用済イオン交換樹脂
５・・・簡易流過装置 ・
６・・・使用済イオン交換樹脂前処理タンク７・・・電
解質供給部 ８・・・セメント混線タンク９・・・
主攪拌タンク １０・・・攪拌羽根１１・・・輸
送ポンプ １２・・・ドラム缶１３・・・濃度調整
タンク １４・・・循環ポンプ１５・・・イオン濃度測
定器
）企カロ電解ｔう量（””／９−＊ｉｇ旨）第４図Figure 1 is a system diagram showing a waste treatment system according to an embodiment of the present invention, Figure 2 is a diagram showing the relationship between the amount of added electrolyte and the decrease in ion exchange resin volume, and Figure 3 is a diagram showing the ion exchange resin in the present invention. FIG. 4, which is a schematic diagram for explaining volume reduction, is a system diagram of a processing system for another embodiment of the present invention. 4... Used ion exchange resin 5... Simple flow device ・ 6... Used ion exchange resin pretreatment tank 7... Electrolyte supply section 8... Cement mixing tank 9...
Main stirring tank 10... Stirring blade 11... Transport pump 12... Drum can 13... Concentration adjustment tank 14... Circulation pump 15... Ion concentration measuring device) ”/9-*ig effect) Figure 4
Claims (1)
用済陽イオン交換樹脂には陽イオンを、使用済陰イオン
交換樹脂には陰イオンを、使用済陽イオン交換樹脂また
は使用済陰イオン交換樹脂１ｇ（乾燥重量）当り０．３
ミリモル以上の割合で、イオン吸着させた後に、固化剤
と混合して固化させることを特徴とする使用済イオン交
換樹脂の固化処理方法。 ２、前記電解質として水に難溶性の電解質を用いる特許
請求の範囲第１項記載の使用済イオン交換樹脂の固化処
理方法。 ３、前記使用済陽イオン交換樹脂及び使用済陰イオン交
換樹脂中の含水率を４０％以上６０％以下の範囲で調整
させる特許請求の範囲第２項に記載の使用済イオン交換
樹脂の固化処理方法。[Claims] 1. Add an electrolyte to the used ion exchange resin in advance to add cations to the used cation exchange resin and anions to the used anion exchange resin. 0.3 per gram (dry weight) of resin or used anion exchange resin
A method for solidifying a used ion exchange resin, which comprises adsorbing ions at a millimole or more ratio and then mixing with a solidifying agent to solidify the resin. 2. The method for solidifying a used ion exchange resin according to claim 1, wherein the electrolyte is an electrolyte that is sparingly soluble in water. 3. Solidification treatment of the used ion exchange resin according to claim 2, which adjusts the water content in the used cation exchange resin and the used anion exchange resin in the range of 40% to 60%. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9473387A JPS63261200A (en) | 1987-04-17 | 1987-04-17 | Solidifying processing method of spent ion exchange resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9473387A JPS63261200A (en) | 1987-04-17 | 1987-04-17 | Solidifying processing method of spent ion exchange resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63261200A true JPS63261200A (en) | 1988-10-27 |
Family
ID=14118315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9473387A Pending JPS63261200A (en) | 1987-04-17 | 1987-04-17 | Solidifying processing method of spent ion exchange resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63261200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6235688B1 (en) * | 2016-12-08 | 2017-11-22 | 株式会社オートセット | Radioactive material-containing soil treatment apparatus and system |
-
1987
- 1987-04-17 JP JP9473387A patent/JPS63261200A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6235688B1 (en) * | 2016-12-08 | 2017-11-22 | 株式会社オートセット | Radioactive material-containing soil treatment apparatus and system |
| JP2018096697A (en) * | 2016-12-08 | 2018-06-21 | 株式会社オートセット | Treatment apparatus and system for soil containing radioactive materials |
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