JPH04219103A - Method for adsorbing and removing specified material in solution in storage tank - Google Patents
Method for adsorbing and removing specified material in solution in storage tankInfo
- Publication number
- JPH04219103A JPH04219103A JP40323190A JP40323190A JPH04219103A JP H04219103 A JPH04219103 A JP H04219103A JP 40323190 A JP40323190 A JP 40323190A JP 40323190 A JP40323190 A JP 40323190A JP H04219103 A JPH04219103 A JP H04219103A
- Authority
- JP
- Japan
- Prior art keywords
- adsorbent
- solution
- storage tank
- adsorption
- specific substance
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 19
- 239000000463 material Substances 0.000 title abstract description 9
- 239000003463 adsorbent Substances 0.000 claims abstract description 55
- 238000001179 sorption measurement Methods 0.000 claims description 44
- 239000000126 substance Substances 0.000 claims description 44
- 230000001112 coagulating effect Effects 0.000 claims description 3
- 239000000941 radioactive substance Substances 0.000 description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 230000015271 coagulation Effects 0.000 description 10
- 238000005345 coagulation Methods 0.000 description 10
- 238000004062 sedimentation Methods 0.000 description 9
- 239000003153 chemical reaction reagent Substances 0.000 description 8
- 239000004408 titanium dioxide Substances 0.000 description 6
- 238000000605 extraction Methods 0.000 description 5
- 230000003311 flocculating effect Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 229910052778 Plutonium Inorganic materials 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 2
- TVFDJXOCXUVLDH-RNFDNDRNSA-N cesium-137 Chemical compound [137Cs] TVFDJXOCXUVLDH-RNFDNDRNSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は，例えば核燃料再処理工
程の貯槽内溶液中から放射性物質（特定物質）を除去す
る特定物質吸着除去方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adsorbing and removing radioactive substances (specific substances) from a solution in a storage tank in, for example, a nuclear fuel reprocessing process.
【０００２】0002
【従来の技術】従来の貯槽内溶液中の特定物質吸着除去
方法を図３により説明すると，０１が貯槽，０２が放射
性物質（特定物質）を含む貯槽内溶液，０１０がポンプ
等の移送機器，０１２が吸着装置（吸着塔），０１３が
同吸着装置０１２内の吸着剤，０１４が貯槽，０１５が
ポンプ等の移送機器で，移送機器０１０により，放射性
物質（特定物質）を含む貯槽内溶液０２を貯槽０１から
吸着装置０１２へ取り出して，同吸着装置０１２内の吸
着剤０１３により，放射性物質（特定物質）を吸着，除
去し，放射性物質除去後の溶液を貯槽０１４と移送機器
０１５とを経て次工程へ送るようになっている。2. Description of the Related Art A conventional method for adsorbing and removing a specific substance in a solution in a storage tank is explained with reference to FIG. 012 is an adsorption device (adsorption tower), 013 is an adsorbent in the adsorption device 012, 014 is a storage tank, and 015 is a transfer device such as a pump. is taken out from the storage tank 01 to the adsorption device 012, the radioactive substance (specific substance) is adsorbed and removed by the adsorbent 013 in the adsorption device 012, and the solution after removing the radioactive substance is passed through the storage tank 014 and the transfer device 015. It is now sent to the next process.
【０００３】0003
【発明が解決しようとする課題】前記図３に示す従来の
特定物質吸着除去方法には，次の問題があった。即ち，
（１）吸着操作を伴うため，放射性物質を含む溶液を貯
留するための貯槽０１と
，放射性物質を吸着除去するための吸着装置０１２と，
放射性物質除去後の溶液を貯留するための貯槽０１５と
を設けなければならず，特定物質吸着除去設備の設置に
広い面積を必要として，設備費を嵩ませる。
（２）処理対象の溶液の付加価値が低く，廃棄予定の場
合，流して，廃棄される
ことが多い。この場合，溶液を貯槽外で処理した後，こ
の貯槽，さらには貯槽外に設置した吸着装置も廃棄され
ることになる。The conventional specific substance adsorption/removal method shown in FIG. 3 has the following problems. That is,
(1) Since an adsorption operation is involved, a storage tank 01 for storing a solution containing radioactive substances, and an adsorption device 012 for adsorbing and removing radioactive substances,
A storage tank 015 must be provided to store the solution after the radioactive substances have been removed, and a large area is required to install the specific substance adsorption/removal equipment, which increases equipment costs. (2) If the added value of the solution to be treated is low and it is scheduled for disposal, it is often flushed away and discarded. In this case, after the solution is processed outside the storage tank, the storage tank and even the adsorption device installed outside the storage tank will be discarded.
【０００４】本発明は前記の問題点に鑑み提案するもの
であり，その目的とする処は，特定物質を吸着除去する
ための吸着装置と，特定物質除去後の溶液を貯留するた
めの貯槽とを不要にでき，特定物質吸着除去設備の設置
に広い面積を必要としなくて，設備費を低減できる貯槽
内溶液中の特定物質吸着除去方法を提供しようとする点
にある。The present invention has been proposed in view of the above-mentioned problems, and its purpose is to provide an adsorption device for adsorbing and removing a specific substance, and a storage tank for storing a solution after removing the specific substance. The object of the present invention is to provide a method for adsorbing and removing a specific substance in a solution in a storage tank, which eliminates the need for specific substance adsorption and removal equipment, does not require a large area for installing specific substance adsorption and removal equipment, and reduces equipment costs.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
めに，本発明は，貯槽内溶液中の特定物質を除去するに
当たり，吸着剤を貯槽内に直接投入して，同吸着剤によ
り溶液中の特定物質を吸着した後，吸着剤から溶液を除
去して，溶液中の特定物質を除去することを特徴として
いる。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for removing a specific substance from a solution in a storage tank by directly introducing an adsorbent into the storage tank and using the adsorbent to remove a specific substance from the solution in the storage tank. The feature is that after adsorbing the specific substance in the adsorbent, the solution is removed from the adsorbent to remove the specific substance in the solution.
【０００６】また本発明は前記吸着剤に粉末状吸着剤を
使用し，これを貯槽内に直接投入すると同時に若しくは
その後に凝集沈澱剤を投入することを特徴としている。[0006] The present invention is also characterized in that a powdered adsorbent is used as the adsorbent, and that the flocculating and precipitating agent is added at the same time as or after the powdered adsorbent is directly introduced into the storage tank.
【０００７】[0007]
【作用】本発明は前記のように貯槽内溶液中の特定物質
を除去するに当たり，吸着剤を貯槽内に直接投入して，
同吸着剤により溶液中の特定物質を吸着した後，吸着剤
から溶液を除去して，溶液中の特定物質を除去する。前
記吸着剤に粉末状吸着剤を使用し，これを貯槽内に直接
投入すると同時に若しくはその後に凝集沈澱剤を投入す
る。[Operation] In order to remove a specific substance from the solution in the storage tank as described above, the present invention directly injects the adsorbent into the storage tank.
After the adsorbent adsorbs a specific substance in the solution, the solution is removed from the adsorbent to remove the specific substance in the solution. A powdered adsorbent is used as the adsorbent, and at the same time as this is directly introduced into the storage tank, or at the same time, a flocculating and precipitating agent is added.
【０００８】[0008]
【実施例】次に本発明の貯槽内溶液中の特定物質吸着除
去方法を図１に示す第１実施例により説明する。図１（
ａ）の１が貯槽，２が放射性物質（特定物質）を含む溶
液，図１（ｂ）の３が吸着剤，５が試薬投入管，６が吸
着剤投入管，７が凝集沈澱剤投入管，８が溶液取出管で
ある。[Embodiment] Next, the method of adsorbing and removing a specific substance in a solution in a storage tank according to the present invention will be explained using a first embodiment shown in FIG. Figure 1 (
1 in a) is a storage tank, 2 is a solution containing a radioactive substance (specific substance), 3 in Figure 1 (b) is an adsorbent, 5 is a reagent input tube, 6 is an adsorbent input tube, 7 is a coagulation precipitant input tube , 8 is a solution extraction tube.
【０００９】次の放射性物質（特定物質）の吸着除去要
領を説明する。
（１）溶液２中の放射性物質の吸着条件を満足するよう
に，必要に応じて試薬を
試薬投入管５から貯槽１内へ投入して，溶液２の性状を
調整する。
（２）吸着に必要な量の吸着剤を吸着剤投入管６から貯
槽１内へ投入して，吸着
操作を行う。吸着反応は，吸着剤３と溶液２とが接触し
ていれば，自然に進行する。その際，溶液２を攪拌して
，吸着反応を促進するようにしてもよい。また吸着反応
を促進させるために，反応温度を調整してもよい。
（３）吸着に要する時間は，吸着平衡に達する時間で決
まるので，その都度，液
性に応じて設定する。
（４）吸着剤３が貯槽１底部に沈降したら，放射性物質
（特定物質）除去後の溶
液２を溶液取出管８から貯槽１外へ取り出す。The following procedure for adsorption and removal of radioactive substances (specific substances) will be explained. (1) Adjust the properties of the solution 2 by introducing a reagent into the storage tank 1 from the reagent input tube 5 as necessary so that the adsorption conditions for the radioactive substance in the solution 2 are satisfied. (2) The amount of adsorbent required for adsorption is introduced into the storage tank 1 from the adsorbent input pipe 6, and the adsorption operation is performed. The adsorption reaction will proceed naturally if the adsorbent 3 and the solution 2 are in contact with each other. At this time, the solution 2 may be stirred to promote the adsorption reaction. Furthermore, the reaction temperature may be adjusted to promote the adsorption reaction. (3) The time required for adsorption is determined by the time required to reach adsorption equilibrium, so it is set each time according to the liquid properties. (4) Once the adsorbent 3 has settled to the bottom of the storage tank 1, the solution 2 from which the radioactive substance (specific substance) has been removed is taken out of the storage tank 1 through the solution extraction pipe 8.
【００１０】上記特定物質吸着除去方法において，（ａ
）吸着に要する時間
■二酸化チタンによるプルトニウム吸着平衡時間・・・
・・・・約２４時間■ゼオライトによるセシウム─１３
７の吸着平衡時間・・・・・約２４時間■リンタングス
テン酸カリウムによるセシウム─１３７の吸着平衡時間
・・
・・・約２４時間（ｂ）水中または希硝酸中における吸
着剤の沈降時間■二酸化チタン（平均径０．２〜２ｍｍ
）の沈降性・・・攪拌停止後，即座に
沈降する。
■二酸化チタン（平均径０．５μｍ）の沈降性・・・・
・攪拌停止後，１０回
程度でも沈降の気配
なし
次に本発明の貯槽内溶液中の特定物質吸着除去方法を図
２に示す第２実施例により説明する。図２（ａ）の１が
貯槽，２が放射性物質（特定物質）を含む溶液，図２（
ｂ）の３が吸着剤，５が試薬投入管，６が吸着剤投入管
，図２（ｃ）の４が凝集沈澱剤とともに沈降した吸着剤
，７が凝集沈澱剤投入管，８が溶液取出管である。[0010] In the above method for adsorption and removal of specific substances, (a
) Time required for adsorption ■ Plutonium adsorption equilibrium time by titanium dioxide...
...about 24 hours ■Cesium-13 by zeolite
Adsorption equilibrium time of 7: Approximately 24 hours ■ Adsorption equilibrium time of cesium-137 by potassium phosphotungstate
・・・
...About 24 hours (b) Sedimentation time of adsorbent in water or dilute nitric acid ■Titanium dioxide (average diameter 0.2 to 2 mm
)...immediately after stopping stirring
Sediment. ■Sedimentation property of titanium dioxide (average diameter 0.5 μm)...
・10 times after stopping stirring
There are signs of sedimentation
None Next, the method of adsorbing and removing a specific substance in a solution in a storage tank according to the present invention will be explained with reference to a second embodiment shown in FIG. In Figure 2(a), 1 is a storage tank, 2 is a solution containing a radioactive substance (specific substance), and Figure 2 (
3 in b) is the adsorbent, 5 is the reagent input tube, 6 is the adsorbent input tube, 4 in Figure 2 (c) is the adsorbent that has settled together with the flocculating precipitant, 7 is the flocculating precipitant input tube, and 8 is the solution extraction tube. It's a tube.
【００１１】次に放射性物質（特定物質）の吸着除去要
領を具体的に説明する。
（１）溶液２中の放射性物質の吸着条件を満足するよう
に，必要に応じて試薬を
試薬投入管５から貯槽１内へ投入して，溶液２の性状を
調整する（図２（ｂ）参照）。
（２）吸着に必要な量の吸着剤を吸着剤投入管６から貯
槽１内へ投入して，吸着
操作を行う（図２（ｂ）参照）。吸着反応は，吸着剤３
と溶液２とが接触していれば，自然に進行する。その際
，溶液２を攪拌して，吸着反応を促進するようにしても
よい。また吸着反応を促進させるために，反応温度を調
整してもよい。
（３）吸着に要する時間は，吸着平衡に達する時間で決
まるので，その都度，液
性に応じて設定する。
（４）吸着剤３が粒状（例えば直径１ｍｍ程度）であれ
ば，重力で貯槽１底部に
沈降する。吸着剤３が粉末状であれば，溶液２中で重力
沈降を行うのが困難で，その場合には，粉末状吸着剤３
を貯槽１内に直接投入すると同時に若しくはその後に凝
集沈澱剤を凝集沈澱剤投入管７から投入する（図２（ｃ
）参照）。
（５）吸着剤３が貯槽１底部に沈降したら，放射性物質
（特定物質）除去後の溶
液２を溶液取出管８から貯槽１外へ取り出す（図２（ｃ
）参照）。Next, the procedure for adsorption and removal of radioactive substances (specific substances) will be explained in detail. (1) Adjust the properties of the solution 2 by injecting reagents into the storage tank 1 from the reagent input tube 5 as necessary so as to satisfy the adsorption conditions for the radioactive substances in the solution 2 (Figure 2(b) reference). (2) The amount of adsorbent required for adsorption is introduced into the storage tank 1 from the adsorbent input pipe 6, and the adsorption operation is performed (see FIG. 2(b)). The adsorption reaction is performed using adsorbent 3.
If the and solution 2 are in contact with each other, the process will proceed naturally. At this time, the solution 2 may be stirred to promote the adsorption reaction. Furthermore, the reaction temperature may be adjusted to promote the adsorption reaction. (3) The time required for adsorption is determined by the time required to reach adsorption equilibrium, so it is set each time according to the liquid properties. (4) If the adsorbent 3 is granular (for example, about 1 mm in diameter), it will settle to the bottom of the storage tank 1 due to gravity. If the adsorbent 3 is in powder form, it is difficult to perform gravity sedimentation in the solution 2, and in that case, the powdered adsorbent 3
is directly introduced into the storage tank 1, or at the same time, the coagulating precipitant is introduced from the coagulating precipitating agent input pipe 7 (Fig. 2(c)
)reference). (5) When the adsorbent 3 settles to the bottom of the storage tank 1, the solution 2 after removing the radioactive substance (specific substance) is taken out of the storage tank 1 from the solution extraction pipe 8 (Fig. 2(c)
)reference).
【００１２】上記特定物質吸着除去方法において，（ａ
）吸着に要する時間
■二酸化チタンによるプルトニウム吸着平衡時間・・・
・・・・約２４時間■ゼオライトによるセシウム─１３
７の吸着平衡時間・・・・・約２４時間■リンタングス
テン酸カリウムによるセシウム─１３７の吸着平衡時間
・・
・・・約２４時間（ｂ）水中または希硝酸中における吸
着剤の沈降時間■二酸化チタン（平均径０．２〜２ｍｍ
）の沈降性・・・攪拌停止後，即座に
沈降する。
■二酸化チタン（平均径０．５μｍ）の沈降性・・・・
・攪拌停止後，１０回
程度でも沈降の気配
なし
次に本発明の貯槽内溶液中の特定物質吸着除去方法を図
２に示す第２実施例により説明する。図２（ａ）の１が
貯槽，２が放射性物質（特定物質）を含む溶液，図２（
ｂ）の３が吸着剤，５が試薬投入管，６が吸着剤投入管
，図２（ｃ）の４が凝集沈澱剤とともに沈降した吸着剤
，７が凝集沈澱剤投入管，８が溶液取出管である。
（ｃ）凝集沈澱剤の選定
凝集沈澱剤を次のような考え方で選定した。■耐放射性
の低い有機系凝集沈澱剤を選定対象から除外する。■貯
槽の材料がステンレス鋼の場合は，塩化物系の凝集沈澱
剤は貯槽材料に応力腐食割れを起こす恐れがあるため，
選定対象外とする。■上記考え方から市販の凝集沈澱剤
としては，硫酸アルミニウム，硫酸第２鉄等を選定する
のが望ましいと評価している。
（ｄ）凝集沈澱速度
■硫酸アルミニウム及び硫酸第２鉄を使用して，吸着剤
粒子（平均径０．３μｍ）を液中で凝集沈澱操作を行う
と，５〜２４時間で沈降する。In the above method for adsorption and removal of specific substances, (a
) Time required for adsorption ■ Plutonium adsorption equilibrium time by titanium dioxide...
...about 24 hours ■Cesium-13 by zeolite
Adsorption equilibrium time of 7: Approximately 24 hours ■ Adsorption equilibrium time of cesium-137 by potassium phosphotungstate
・・・
... Approximately 24 hours (b) Sedimentation time of adsorbent in water or dilute nitric acid ■Titanium dioxide (average diameter 0.2 to 2 mm
) sedimentation property... Immediately after stopping stirring
Sediment. ■Sedimentation property of titanium dioxide (average diameter 0.5μm)...
・10 times after stopping stirring
There are signs of sedimentation
None Next, the method of adsorbing and removing a specific substance in a solution in a storage tank according to the present invention will be explained with reference to a second embodiment shown in FIG. In Figure 2(a), 1 is a storage tank, 2 is a solution containing a radioactive substance (specific substance), and Figure 2 (
3 in b) is the adsorbent, 5 is the reagent input tube, 6 is the adsorbent input tube, 4 in Fig. 2 (c) is the adsorbent that has settled together with the coagulation precipitant, 7 is the coagulation precipitant input tube, and 8 is the solution extraction tube. It's a tube. (c) Selection of coagulation precipitant The coagulation precipitant was selected based on the following concept. ■Exclude organic flocculant precipitants with low radiation resistance from selection. ■If the storage tank material is stainless steel, chloride-based coagulation precipitants may cause stress corrosion cracking in the storage tank material.
Not eligible for selection. ■Based on the above considerations, it is considered desirable to select aluminum sulfate, ferric sulfate, etc. as commercially available coagulation and precipitants. (d) Coagulation and sedimentation rate ■ When adsorbent particles (average diameter 0.3 μm) are coagulated and sedimented in a liquid using aluminum sulfate and ferric sulfate, they will settle in 5 to 24 hours.
【００１３】[0013]
【発明の効果】本発明は前記のように貯槽内溶液中の特
定物質を除去するに当たり，吸着剤を貯槽内に直接投入
して，同吸着剤により溶液中の特定物質を吸着した後，
吸着剤から溶液を除去して，溶液中の特定物質を除去す
るので，特定物質を吸着除去するための吸着装置と，特
定物質除去後の溶液を貯留するための貯槽とを不要にで
き，特定物質吸着除去設備の設置に広い面積を必要とし
なくて，設備費を低減できる。[Effects of the Invention] In order to remove a specific substance from a solution in a storage tank as described above, the present invention directly introduces an adsorbent into the storage tank, and after the adsorbent adsorbs the specific substance in the solution,
Since the solution is removed from the adsorbent and the specific substance in the solution is removed, it is possible to eliminate the need for an adsorption device to adsorb and remove the specific substance and a storage tank to store the solution after the specific substance has been removed. A large area is not required to install the substance adsorption and removal equipment, reducing equipment costs.
【００１４】また本発明は前記吸着剤に粉末状吸着剤を
使用し，これを貯槽内に直接投入すると同時に若しくは
その後に凝集沈澱剤を投入するので，粒径１ｍｍ程度の
粉末状吸着剤吸着剤を使用しても，これを貯槽底部へ短
時間で沈降させることができて，特定物質の吸着除去処
理を迅速に行うことができる効果がある。[0014] Furthermore, in the present invention, a powdered adsorbent is used as the adsorbent, and the coagulation and precipitant is added at the same time as or after the adsorbent is directly introduced into the storage tank. Even if it is used, it can settle to the bottom of the storage tank in a short time, and has the effect of quickly adsorbing and removing specific substances.
【図１】本発明に係わる貯槽内溶液中の特定物質吸着除
去方法の第１実施例を示す説明図である。FIG. 1 is an explanatory diagram showing a first embodiment of a method for adsorbing and removing a specific substance in a solution in a storage tank according to the present invention.
【図２】本発明に係わる貯槽内溶液中の特定物質吸着除
去方法の第２実施例を示す説明図である。FIG. 2 is an explanatory diagram showing a second embodiment of the method for adsorbing and removing a specific substance in a solution in a storage tank according to the present invention.
【図３】従来の貯槽内溶液中の特定物質吸着除去方法を
示す説明図である。FIG. 3 is an explanatory diagram showing a conventional method for adsorbing and removing a specific substance in a solution in a storage tank.
１ 貯槽
２ 溶液
３ 吸着剤
４ 凝集沈降剤とともに沈降した吸着剤５ 試薬投
入管
６ 吸着剤投入管
７ 凝集沈澱剤投入管
８ 溶液取出管1 Storage tank 2 Solution 3 Adsorbent 4 Adsorbent 5 that has settled together with the flocculant and precipitant Reagent input tube 6 Adsorbent input tube 7 Coagulation and precipitant input tube 8 Solution removal tube
Claims (2)
当たり，吸着剤を貯槽内に直接投入して，同吸着剤によ
り溶液中の特定物質を吸着した後，吸着剤から溶液を除
去して，溶液中の特定物質を除去することを特徴とした
貯槽内溶液中の特定物質吸着除去方法。[Claim 1] When removing a specific substance from a solution in a storage tank, an adsorbent is directly introduced into the storage tank, the specific substance in the solution is adsorbed by the adsorbent, and then the solution is removed from the adsorbent. , a method for adsorption and removal of a specific substance in a solution in a storage tank, characterized by removing a specific substance in the solution.
これを貯槽内に直接投入すると同時に若しくはその後に
凝集沈澱剤を投入することを特徴とした請求項１記載の
貯槽内溶液中の特定物質吸着除去方法。[Claim 2] A powdered adsorbent is used as the adsorbent,
2. The method for adsorbing and removing a specific substance from a solution in a storage tank according to claim 1, characterized in that a coagulating precipitant is added at the same time as or after the solution is directly put into the storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40323190A JPH04219103A (en) | 1990-12-18 | 1990-12-18 | Method for adsorbing and removing specified material in solution in storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP40323190A JPH04219103A (en) | 1990-12-18 | 1990-12-18 | Method for adsorbing and removing specified material in solution in storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04219103A true JPH04219103A (en) | 1992-08-10 |
Family
ID=18512985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP40323190A Withdrawn JPH04219103A (en) | 1990-12-18 | 1990-12-18 | Method for adsorbing and removing specified material in solution in storage tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04219103A (en) |
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Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980312 |