JPH08155272A - Pure water making apparatus - Google Patents

Pure water making apparatus

Info

Publication number
JPH08155272A
JPH08155272A JP32141294A JP32141294A JPH08155272A JP H08155272 A JPH08155272 A JP H08155272A JP 32141294 A JP32141294 A JP 32141294A JP 32141294 A JP32141294 A JP 32141294A JP H08155272 A JPH08155272 A JP H08155272A
Authority
JP
Japan
Prior art keywords
chamber
anion
cation
exchanger
pure water
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
Application number
JP32141294A
Other languages
Japanese (ja)
Inventor
Toru Hoshi
徹 星
Hidenori Shibata
英則 柴田
Ryosuke Aoki
良輔 青木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP32141294A priority Critical patent/JPH08155272A/en
Publication of JPH08155272A publication Critical patent/JPH08155272A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

PURPOSE: To stably produce pure water over a long period of time and to stabilize the flow of treated water while preventing the damage to an ion exchanger by forming an amphoteric ion exchanger of a dilution chamber into a sheet shape and specifying the thickness of the dilution chamber. CONSTITUTION: A plurality of cation exchange membranes K and a plurality of anion exchange membranes A are alternately arranged between an anode chamber 3 equipped with an anode 1 and a cathode chamber 4 equipped with a cathode 2 to constitute an electrodialytic water cell. Dilution chambers 6 and concn. chambers 5 demarcated on the side of the anode 2 by the anion exchange membranes A and demarcated on the side of the cathode 2 by the anion exchange membranes K are alternately formed in the electrodialytic water cell. Further, cation exchangers and anion exchangers are housed in the dilution chambers 6. In this pure water making apparatus, the cation and anion exchangers of the dilution chambers 6 are formed as sheet like ion exchangers 7 to be filled into the opening parts of chamber frames 8. The thickness of the dilution chambers 6 is specified to 0.1-1.1mm.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、医薬品の製造、半導体
の製造、原子炉用水などとして使用される純水もしくは
超純水の製造装置に関し、より具体的には、陰陽のイオ
ン交換膜を使用するとともに、合わせて陰陽の両イオン
交換体を使用してなる純水製造装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing pure water or ultrapure water used for the production of pharmaceuticals, semiconductors, water for nuclear reactors, etc. The present invention relates to a pure water production apparatus which is used and also uses both positive and negative ion exchangers.

【0002】[0002]

【従来の技術】従来、純水を製造する方法の一つとし
て、陰陽のイオン交換樹脂を用いて被処理水中に含まれ
る不純イオンを吸着除去する方法が広く採用されてい
る。この方法は、基本的には水素形イオン交換樹脂と水
酸形イオン交換樹脂の充填層(床)に陰陽の各種イオン
を含む被処理水を通して純水を得るものであるが、この
イオン交換処理に使用して吸着能力が低下した樹脂は再
生剤として酸やアルカリを用いて再生を行う必要があ
り、このためその再生操作が煩雑であるばかりでなく、
多量の酸やアルカリ再生廃液が排出されるという欠点が
ある。
2. Description of the Related Art Conventionally, as one of the methods for producing pure water, a method of adsorbing and removing impure ions contained in the water to be treated by using an anion-yang ion exchange resin has been widely adopted. This method is basically to obtain pure water by passing water to be treated containing various ions of Yin and Yang into a packed bed (bed) of hydrogen ion exchange resin and hydroxide ion exchange resin. It is necessary to regenerate the resin whose adsorptive capacity has been reduced by using acid or alkali as a regenerant, and therefore the regeneration operation is not only complicated but also
There is a drawback that a large amount of acid and alkali regeneration waste liquid is discharged.

【0003】そのように再生を要し、これに伴う上述欠
点を解消するため、陰イオン交換体及び陽イオン交換体
を陰イオン交換膜及び陽イオン交換膜と組み合わせた純
水製造装置が提案され、注目されているが、この例とし
ては例えば特開平3−224688号、特公平4−72
567号、特公平6−20513号等を挙げることがで
きる。図1は、このうち特開平3−224688号で提
案されているその純水製造装置の態様を示すものであ
る。
In order to eliminate the above-mentioned drawbacks due to the above-mentioned regeneration, a pure water producing apparatus in which an anion exchanger and a cation exchanger are combined with an anion exchange membrane and a cation exchange membrane has been proposed. Attention has been paid to this, but examples of this include, for example, JP-A-3-224688 and JP-B-4-72.
No. 567, Japanese Examined Patent Publication No. 6-20513, and the like. FIG. 1 shows an embodiment of the pure water producing apparatus proposed in JP-A-3-224688.

【0004】図1中、1は陽極、2は陰極であり、これ
ら両極1、2はそれぞれ陽極室3及び陰極室4内に配置
されている。図示のとおりこの陽極室3及び陰極室4の
間には複数個の陰イオン交換膜Aと陽イオン交換膜Kと
が交互に配列、設置され、陽極1側の陰イオン交換膜A
とこれと相対する陰極2側の陽イオン交換膜Kとの間に
脱塩室5が構成され、この脱塩室5には再生形の陽イオ
ン交換体(粒子状)と再生形の陰イオン交換体(粒子
状)との混合体が収容、充填されている。また陽極1側
の陽イオン交換膜Kとこれと相対する陰極2側の陰イオ
ン交換膜Aとの間には濃縮室6が構成されている。
In FIG. 1, 1 is an anode, 2 is a cathode, and these both electrodes 1, 2 are arranged in an anode chamber 3 and a cathode chamber 4, respectively. As shown in the drawing, a plurality of anion exchange membranes A and cation exchange membranes K are alternately arranged and installed between the anode chamber 3 and the cathode chamber 4, and the anion exchange membrane A on the anode 1 side is arranged.
And a cation exchange membrane K on the side of the cathode 2 opposite thereto, a desalting chamber 5 is formed, and in this desalting chamber 5, a regenerated cation exchanger (particulate) and a regenerated anion are formed. The mixture with the exchanger (particulate) is contained and filled. A concentration chamber 6 is formed between the cation exchange membrane K on the anode 1 side and the anion exchange membrane A on the cathode 2 side opposite to the cation exchange membrane K.

【0005】この装置の操作に際しては、陽極室3及び
陰極室4中に電導性をもつ適当な電解質溶液を流通さ
せ、脱塩室5に被処理水を流し、また濃縮室6には適宜
の電解質水溶液を流しながら陽極板1及び陰極板2間に
直流電流を通ずると、脱塩室5では被処理水中の不純物
イオンが陰陽両イオン交換体により吸着除去され、純水
が得られるとともに、イオン交換体に吸着された不純物
イオンはイオン交換膜により電気透析されて濃縮室6に
移動し、この濃縮室6から濃縮水として排出される。
When operating this apparatus, a suitable electrolyte solution having electrical conductivity is passed through the anode chamber 3 and the cathode chamber 4, water to be treated is passed through the desalting chamber 5, and an appropriate concentration chamber 6 is provided. When a direct current is passed between the anode plate 1 and the cathode plate 2 while flowing the electrolytic aqueous solution, the impurity ions in the water to be treated are adsorbed and removed by the anion and cation ion exchanger in the desalting chamber 5, and pure water is obtained and the ions are The impurity ions adsorbed on the exchanger are electrodialyzed by the ion exchange membrane, move to the concentration chamber 6, and are discharged from the concentration chamber 6 as concentrated water.

【0006】概略、以上のような陰陽のイオン交換体及
びイオン交換膜を組み合わせた純水製造装置によれば、
高い純度の純水を有効に得ることができるが、脱塩室
(=イオン分離室=希釈室)は、その中に陰イオン交換
体粒子及び陽イオン交換体粒子を収容、充填しておくも
のであるため、その形状が複雑であり、その保守管理が
煩雑であるばかりでなく、大型化が難かしいという欠点
があり、またその脱塩室の厚さはどうしても厚くならざ
るを得ず、このため被処理水の流れに乱れが生じやす
く、これによって陰陽の両イオン交換膜及びイオン交換
物質を損傷させ、脱塩性能が経時的に低下するという欠
点があった。
[0006] In general, according to the pure water producing apparatus that combines the positive and negative ion exchanger and the ion exchange membrane as described above,
Although high-purity pure water can be effectively obtained, the desalting chamber (= ion separating chamber = diluting chamber) contains anion exchanger particles and cation exchanger particles therein. Therefore, its shape is complicated, its maintenance is not only complicated, and it is difficult to increase its size, and the desalination chamber is inevitably thick. Therefore, the flow of the water to be treated is apt to be disturbed, which damages both the positive and negative ion-exchange membranes and the ion-exchange substance, resulting in a decrease in desalination performance over time.

【0007】この点、特公平4−72567号及び特公
平6−20513号においては、前記のような純水製造
装置(両公報では電気脱イオン化装置と称している)に
おいて、脱塩室(=イオン分離室=希釈室)の幅を約
0.762〜10.16cm(0.3〜4インチ)、厚
さを約0.127〜0.635cm(0.05〜0.2
5インチ)とし、その陰陽両イオン交換体(固体のイオ
ン交換物質)としては「フアイバまたはビ−ドまたは同
等物」を使用するとしている。
In this respect, in Japanese Patent Publication No. 4-72567 and Japanese Patent Publication No. 6-20513, a desalting chamber (= called an electric deionization device in both publications) is used. The width of the ion separation chamber = dilution chamber) is about 0.762 to 10.16 cm (0.3 to 4 inches), and the thickness is about 0.127 to 0.635 cm (0.05 to 0.2).
5 inches), and "fiber or bead or equivalent" is used as the anion and cation ion exchanger (solid ion exchange material).

【0008】しかし、この場合にもその厚さは約0.1
27〜0.635cm(約1.27〜6.35mm)で
あり、その下限値でも1.27mm(0.05インチ)
と可成り厚いため、被処理水の流れに乱れが生じやす
く、程度の差はあれ、これによって陰陽の両イオン交換
膜及びイオン交換物質を損傷させ、脱塩性能が経時的に
低下するという点に変わりはない。
However, even in this case, the thickness is about 0.1.
27 to 0.635 cm (about 1.27 to 6.35 mm), and even the lower limit value is 1.27 mm (0.05 inch)
Since it is fairly thick, the flow of water to be treated is likely to be turbulent, and to some extent, this damages both the positive and negative ion exchange membranes and the ion exchange material, and the desalination performance deteriorates over time. Is no different.

【0009】本発明者は、電気透析を利用した純水製造
装置における以上のような事情ないし問題点に鑑み、各
種側面から鋭意、実験、検討を重ねたところ、上記従来
のように粒子状、或いはフアイバ、ビ−ドのような陰イ
オン交換体及び陽イオン交換体を用いるのではなく、こ
れに代えて陰イオン基及び陽イオン交換基を含むシ−ト
状のイオン交換体を使用することにより、上記諸欠点を
一挙に解決し得ることを見い出し、本発明に到達するに
至ったものである。
In view of the above circumstances and problems in the pure water production apparatus utilizing electrodialysis, the present inventor has diligently conducted experiments and studies from various aspects, and as a result, in the particulate state as in the above-mentioned conventional method, Alternatively, instead of using anion exchangers and cation exchangers such as fibers and beads, instead of using sheet-shaped ion exchangers containing anion groups and cation exchange groups As a result, they have found that the above-mentioned various drawbacks can be solved all at once, and have reached the present invention.

【0010】[0010]

【発明が解決しようとする課題】すなわち、本発明は、
陰陽の両イオン交換膜を用いた電気透析を利用するとと
もに、陰イオン交換体及び陽イオン交換体を用いる純水
製造装置において、そのイオン交換体として陰イオン交
換基(OH形)及び陽イオン交換基(H形)を含むシ−
ト状のイオン交換体を使用することにより、従来技術が
有する前述の諸欠点を有せず、長期にわたり安定して純
水を得ることができる純水製造装置を提供することを目
的とするものである。
That is, the present invention is
An anion-exchange group (OH type) and a cation-exchange are used as the ion-exchanger in a pure water production apparatus using an anion-exchanger using both anion-exchange membranes and an anion-exchanger and a cation-exchanger. A group containing a group (H form)
An object of the present invention is to provide a pure water production apparatus that can obtain stable pure water over a long period of time without using the above-mentioned drawbacks of the prior art by using the ion-shaped ion exchanger. Is.

【0011】[0011]

【課題を解決するための手段】本発明は、陽極を備える
陽極室と陰極を備える陰極室との間に、複数枚の陽イオ
ン交換膜と陰イオン交換膜とを交互に配列して構成した
電気透析槽内に、陽極側が陰イオン交換膜で区画され、
陰極側が陽イオン交換膜で区画された希釈室と陰極側が
陽イオン交換膜で区画され、陽極側が陰イオン交換膜で
区画された濃縮室とを交互に形成し、該希釈室内に陽イ
オン交換体と陰イオン交換体とを収容してなる純水製造
装置において、該希釈室における陽イオン交換体と陰イ
オン交換体をシ−ト状とするとともに、該希釈室、好ま
しくは該希釈室と該濃縮室の厚さを0.1mm〜1.1
mm、好ましくは0.4〜1.0mmとしてなることを
特徴とする純水製造装置を提供する。
According to the present invention, a plurality of cation exchange membranes and anion exchange membranes are alternately arranged between an anode chamber having an anode and a cathode chamber having a cathode. In the electrodialysis tank, the anode side is partitioned with an anion exchange membrane,
A diluting chamber in which the cathode side is partitioned by a cation exchange membrane and a concentrating chamber in which the cathode side is partitioned by a cation exchange membrane and the anode side is partitioned by an anion exchange membrane are alternately formed, and a cation exchanger is provided in the diluting chamber. In a pure water producing apparatus containing the anion exchanger and the anion exchanger, the cation exchanger and the anion exchanger in the dilution chamber are made into a sheet shape, and the dilution chamber, preferably the dilution chamber and the The thickness of the concentrating chamber is 0.1 mm to 1.1
mm, preferably 0.4 to 1.0 mm.

【0012】ここでシ−ト状イオン交換体としては、そ
の中に水素形(H形)の陽イオン交換基と水酸形(OH
形)の陰イオン交換基とを有し、純水を得る上で必要な
所期の浄化能(イオン交換能)を有するものであれば、
無機系、有機系を問わず何れも使用可能であり、その形
状としては多孔性又は無孔性シ−ト、織布又は不織布な
どの何れのシ−ト状でも適用することができる。これに
よって、本発明においては、特にその希釈室の厚さを小
さくすることができ、その厚さを上記のとおり0.1m
m〜1.1mm、好ましくは0.4〜1.0mmとして
も、その性能上支障を来すことがないものである。
Here, the sheet-like ion exchanger includes a cation exchange group in a hydrogen form (H form) and a hydroxide form (OH).
Form) and an anion exchange group, and has the desired purification ability (ion exchange ability) necessary for obtaining pure water,
Both inorganic and organic types can be used, and the shape thereof can be any sheet shape such as porous or non-porous sheet, woven cloth or non-woven cloth. As a result, in the present invention, the thickness of the diluting chamber can be reduced, and the thickness can be reduced to 0.1 m as described above.
Even if it is m to 1.1 mm, preferably 0.4 to 1.0 mm, it does not affect the performance.

【0013】そのシ−ト状の好ましい具体的形態として
は、短繊維状のカチオン交換体と短繊維状のアニオン
交換体を均一に混合して必要に応じて適宜のバインダ−
を使用して不織布としたもの、単繊維状のカチオン交
換体とアニオン交換体を各々不織布状にし、積層したも
の、長繊維状のカチオン交換体と長繊維状のアニオン
交換体を布状にしたもの、長繊維状のカチオン交換体
とアニオン交換体を各々布状にし、適宜の順序で積層し
組み合せたもの、カチオン交換体とアニオン交換体を
均一に混合し多孔性のシ−トとしたもの、カオン交換
体とアニオン交換体を各々多孔性シ−ト状とし積層し組
み合わせたもの、以上〜を併用してシ−ト状イオ
ン交換体としたもの、等として使用することができる。
As a preferred specific form of the sheet, a short fibrous cation exchanger and a short fibrous anion exchanger are uniformly mixed and, if necessary, an appropriate binder.
Was used as a non-woven fabric, a single-fiber cation exchanger and an anion exchanger were each formed into a non-woven fabric, and laminated, and a long-fiber cation exchanger and a long-fiber anion exchanger were formed into a cloth. A long fiber-like cation exchanger and an anion exchanger formed into cloth and laminated in an appropriate order, and a cation exchanger and an anion exchanger uniformly mixed to form a porous sheet. , A kaon exchanger and an anion exchanger each formed into a porous sheet and laminated and combined, and a combination of the above items to a sheet-like ion exchanger.

【0014】また、本発明における純水製造装置は、
陰、陽のイオン交換膜を室枠(枠体又はガスケットとも
いう)を介して陰陽の両極間に締付けて構成された既知
のフィルタ−プレス(締付け)型電解透析装置(上記し
た特開平3−224688号など)である。上記室枠の
材質としては好ましくは耐水性があり、不純物の溶出が
ない素材であれば何れも使用することができる。この点
特にポリプロピレン及びポリエチレン系の材料の場合
は、加工性やシ−ル性にも優れているという点で望まし
い。
The pure water producing apparatus according to the present invention is
A known filter-press (tightening) type electrolytic dialysis apparatus constructed by clamping negative and positive ion-exchange membranes between both electrodes of the positive and negative electrodes via a chamber frame (also referred to as a frame or a gasket) (see Japanese Patent Laid-Open No. HEI-3- No. 224688). As a material for the chamber frame, any material can be used as long as it is water resistant and does not elute impurities. In this respect, polypropylene and polyethylene-based materials are preferable because they are excellent in processability and sealability.

【0015】以下、図面に基づき本発明をさらに具体的
に説明する。図2は、本発明に係る純水製造装置の概略
図であり、全体を締付ける前の状態を示す。図2中、1
は陽極、2は陰極、3は陽極室、4は陰極室であり、5
は濃縮室、6は、希釈室である。また、Aは複数枚の陰
イオン交換膜、Kは複数枚の陰イオン交換膜Aに対して
交互に配置された複数枚の陽イオン交換膜であり、図示
のとおり濃縮室5は、陽極側が陽イオン交換膜Kで、陰
極側が陰イオン交換膜で区画されて形成され、希釈室6
は、陽極側が陰イオン交換膜Aで、陰極側が陽イオン交
換膜Kで区画されて構成されている。
The present invention will be described below more specifically with reference to the drawings. FIG. 2 is a schematic view of the pure water producing apparatus according to the present invention, showing a state before the whole is tightened. In FIG. 2, 1
Is an anode, 2 is a cathode, 3 is an anode chamber, 4 is a cathode chamber, 5
Is a concentrating chamber and 6 is a diluting chamber. Further, A is a plurality of anion exchange membranes, K is a plurality of cation exchange membranes alternately arranged with respect to the plurality of anion exchange membranes A, and as shown in the figure, the concentrating chamber 5 has a positive electrode side. The cation exchange membrane K is formed by partitioning the cathode side with the anion exchange membrane, and the dilution chamber 6
Is constituted by partitioning the anode side with an anion exchange membrane A and the cathode side with a cation exchange membrane K.

【0016】また、7は、希釈室6内に収容された本発
明に係るシ−ト状イオン交換体であり、H形イオン交換
基を有する陽イオン交換体とOH形イオン交換基を有す
る陰イオン交換体とをシ−ト状で前述〜のような形
態で適用するが、図2ではそのシ−ト状イオン交換体7
を希釈室を形成する室枠(ガスケット)8の開口部に充
填した態様を示している。また図2中、9は濃縮室5を
形成する室枠(ガスケット)である。なお、図2では、
陽イオン交換膜Kを5枚、陰イオン交換膜Aを4枚用
い、濃縮室及び希釈室をそれぞれともに4個備える場合
を示しているが、純水の所望製造量、そのための装置の
規模その他の条件如何により適宜の数を設置することが
できる。
Further, 7 is a sheet-like ion exchanger according to the present invention housed in the diluting chamber 6, and has a cation exchanger having an H-type ion exchange group and an anion having an OH-type ion exchange group. The sheet-like ion exchanger is applied in the form of a sheet as described above, but in FIG.
It shows a mode in which the opening is filled in the chamber frame (gasket) 8 forming the dilution chamber. Further, in FIG. 2, 9 is a chamber frame (gasket) forming the concentrating chamber 5. In addition, in FIG.
The figure shows a case where five cation exchange membranes K and four anion exchange membranes A are used, and each of the concentration chamber and the dilution chamber is provided with four, but the desired production amount of pure water, the scale of the apparatus therefor, etc. An appropriate number can be installed depending on the conditions.

【0017】次に、図3(a)は希釈室6を構成する室
枠(ガスケット)の一例を、図3(b)は濃縮室5を構
成する室枠(ガスケット)の一例を示すものである。図
3(a)中、10は被処理水供給用導管、11は純水排
出用導管であり、12、13はディストリビュ−タ−で
ある。このうち純水排出用導管11側のディストリビュ
−タ−13は、希釈室6で脱イオンされた純水を収集す
る役目をする。
Next, FIG. 3A shows an example of a chamber frame (gasket) which constitutes the dilution chamber 6, and FIG. 3B shows an example of a chamber frame (gasket) which constitutes the concentration chamber 5. is there. In FIG. 3A, 10 is a conduit for supplying water to be treated, 11 is a conduit for discharging pure water, and 12 and 13 are distributors. Of these, the distributor 13 on the side of the pure water discharge conduit 11 serves to collect the deionized water in the dilution chamber 6.

【0018】また図3(a)中、Sはガスケットの開口
部であり、この開口部S中に、前記シ−ト状イオン交換
体7が配置、固定される。また図3(b)のとおり、濃
縮室5を構成するガスケットにはネット16(図2参
照、この大きさは通常ガスケットの開口部Sと同じくす
る)が挿入、配置されており、図3(b)中、14は濃
縮水の流通導管、15はその集配を行うディストリビュ
−タ−を示している。
Further, in FIG. 3A, S is an opening of the gasket, and the sheet-shaped ion exchanger 7 is arranged and fixed in the opening S. As shown in FIG. 3B, a net 16 (see FIG. 2, the size of which is generally the same as the opening S of the gasket) is inserted and arranged in the gasket forming the concentrating chamber 5. In b), 14 is a distribution conduit for concentrated water, and 15 is a distributor for collecting and delivering the concentrated water.

【0019】以上は、本発明に係る純水製造装置におけ
る基本的態様であるが、これら構成(特に希釈室におい
てシ−ト状イオン交換体を使用する点)を備えている限
り、フィルタ−プレス型(圧濾器型)やユニットセル型
(水槽型)の何れでも適用可能であり、また陰陽の各イ
オン交換膜としては、不均一系や不均一系、また縮合系
や重合系を問わず使用することができるものである。な
お図2中、各室への被処理水の導入、排出用の導管等は
図示していないが(一部導管については、図3参照)、
従来採られている手法により構成することができる。
The above is the basic embodiment of the pure water producing apparatus according to the present invention. As long as it has these constitutions (especially the point where the sheet-like ion exchanger is used in the diluting chamber), the filter press Type (pressure filter type) or unit cell type (water tank type) can be applied, and each ion-exchange membrane for Yin and Yang can be used as a heterogeneous system, a heterogeneous system, or a condensation system or a polymerization system. Is what you can do. In FIG. 2, conduits for introducing and discharging the water to be treated in each chamber are not shown (for some conduits, see FIG. 3).
It can be configured by a conventionally adopted method.

【0020】[0020]

【実施例】以下、本発明の実施例を説明するが、本発明
がこの実施例に限定されないことは勿論である。本実施
例では、以上図2〜図3に示した装置を用いて純水の製
造試験を行った。
EXAMPLES Examples of the present invention will be described below, but it goes without saying that the present invention is not limited to these examples. In this example, a pure water production test was performed using the apparatus shown in FIGS.

【0021】陽イオン交換膜KとしてはセレミオンCM
V〔強酸性陽イオン交換膜、旭硝子(株)社製、商品
名〕、陰イオン交換膜AとしてはセレミオンAMV〔強
塩基性陰イオン交換膜、旭硝子(株)社製、商品名〕を
使用し、シ−ト状イオン交換体7としては、短繊維状
(太さ約50μm、長さ約3cm)の陽イオン交換体と
短繊維状(上記と同じ)の陰イオン交換体とを混合して
形成した厚さ約2mmのフェルト状布を使用した。
As the cation exchange membrane K, selemion CM
V [strong acid cation exchange membrane, manufactured by Asahi Glass Co., Ltd., trade name], and as anion exchange membrane A, selemion AMV [strong basic anion exchange membrane, manufactured by Asahi Glass Co., Ltd.] is used As the sheet-like ion exchanger 7, a short fiber-like (thickness of about 50 μm, length of about 3 cm) cation exchanger and a short fiber-like (the same as the above) anion exchanger are mixed. The felt-like cloth having a thickness of about 2 mm formed by the above method was used.

【0022】また、各希釈室を構成する室枠としては、
図3(a)に示す形状のものを使用し、その大きさは縦
180mm、横100mm、厚さ0.75mmとし、各
希釈室6には、上記フェルト状のイオン交換布をその厚
みを圧縮して充填した。一方各濃縮室5を構成するガス
ケットの大きさは、希釈室6の場合と同じく縦180m
m、横100mm、厚さ0.75mmとし、図3(b)
のようにネット16を挿入、配置した。
Further, as the chamber frame constituting each dilution chamber,
The shape shown in Fig. 3 (a) is used, and the size is 180 mm in length, 100 mm in width, and 0.75 mm in thickness, and the above-mentioned felt-like ion exchange cloth is compressed in each diluting chamber 6. And filled. On the other hand, the size of the gasket forming each concentrating chamber 5 is 180 m in the vertical direction as in the case of the diluting chamber 6.
m, width 100 mm, thickness 0.75 mm, and FIG.
The net 16 was inserted and arranged as described above.

【0023】以上の各構成部分を図2のように配置し、
フィルタ−プレス形式により、常法に従い純水製造装置
としてセットする一方、蒸留水に対してNaClを溶解
して電気伝導度8μs/cmの試験用原水を作成し、こ
の試験水を希釈室に流速8l/h、濃縮室に流速1l/
hで流し、各極室には水道水を流速200ml/hで流
した。両電極に直流電圧を30V印加し、希釈室出口か
ら流出する純水の電気伝導度を経時的に測定した。図4
はその結果を示すものである。
Arrangement of the above respective components as shown in FIG.
While the filter-press type was set as a pure water production apparatus according to a conventional method, NaCl was dissolved in distilled water to prepare a test raw water having an electric conductivity of 8 μs / cm, and the test water was flown into the dilution chamber. 8l / h, flow rate 1l /
h, and tap water was flown into each electrode chamber at a flow rate of 200 ml / h. A DC voltage of 30 V was applied to both electrodes, and the electric conductivity of pure water flowing out from the outlet of the diluting chamber was measured with time. FIG.
Indicates the result.

【0024】《比較例1》また、希釈室5及び濃縮室6
の厚みを1.5mmとした以外は、上記実施例と同じ装
置構成及び操作条件で試験を行った。その結果を同じく
図4に示した。
Comparative Example 1 Further, the diluting chamber 5 and the concentrating chamber 6
The test was conducted under the same apparatus configuration and operating conditions as those of the above-mentioned examples except that the thickness was 1.5 mm. The results are also shown in FIG.

【0025】図4のとおり、本発明の実施例では希釈室
6から得られる水は、運転当初から僅か0.1μs/c
m弱程度の電気伝導度を示し、30日に及ぶ運転を続け
ても高い純度が得られる。これに対して、比較例で希釈
室6から得られる水の電気伝導度は、4日目前後から徐
々に増大して行き、30日経過の時点で2.5μs/c
mもの値を示しており、このように本発明によればきわ
めて有効な効果が得られることは明らかである。また本
実験終了後、解体して両イオン交換樹脂膜及びイオン交
換体の表面を目視により観察したが、実施例の場合には
何らの傷も認められなかった。
As shown in FIG. 4, in the embodiment of the present invention, the water obtained from the diluting chamber 6 is only 0.1 μs / c from the beginning of the operation.
It exhibits an electrical conductivity of a little less than m, and high purity can be obtained even if it is operated for 30 days. On the other hand, in the comparative example, the electric conductivity of water obtained from the diluting chamber 6 gradually increased from around the 4th day, and reached 2.5 μs / c after 30 days.
The value of m is also shown, and thus it is clear that the present invention provides extremely effective effects. After the completion of this experiment, the surfaces of both ion exchange resin membranes and ion exchangers were disassembled and visually observed, but no scratches were observed in the case of the examples.

【0026】[0026]

【発明の効果】以上のとおり、本発明によれば、陰陽の
両イオン交換樹脂をシ−ト状とすることにより長時間に
わたり安定して純水を得ることができる。特に室枠を通
じて希釈室の厚さを0.1mm〜1.1mmとすること
により、処理水の流れを安定させ、イオン交換膜及びイ
オン交換体を傷つけることが少ない等優れた効果が得ら
れる。また、希釈室の形状構造がきわめて簡易であるた
め、煩鎖な保守管理を必要とせず、また大型化が容易に
可能であり、室枠自体を安価かつ大量に生産することが
できる。
As described above, according to the present invention, pure water can be stably obtained over a long period of time by forming the positive and negative ion-exchange resins in a sheet form. In particular, by setting the thickness of the diluting chamber to 0.1 mm to 1.1 mm through the chamber frame, it is possible to stabilize the flow of treated water and to obtain excellent effects such as less damage to the ion exchange membrane and the ion exchanger. Further, since the shape structure of the diluting chamber is extremely simple, complicated maintenance management is not required, and the diluting chamber can be easily increased in size, and the chamber frame itself can be inexpensively mass-produced.

【図面の簡単な説明】[Brief description of drawings]

【図1】従来の純水製造装置の一例を示す図。FIG. 1 is a diagram showing an example of a conventional pure water production apparatus.

【図2】本発明に係る純水製造装置の概略図。FIG. 2 is a schematic diagram of a pure water producing apparatus according to the present invention.

【図3】図2で用いる希釈室及び濃縮室を構成する室枠
を示す図。
FIG. 3 is a view showing a chamber frame that constitutes a dilution chamber and a concentration chamber used in FIG.

【図4】実施例と比較例で得られた純水の電気電導度の
経時的変化を示す図。
FIG. 4 is a view showing a change with time in electric conductivity of pure water obtained in Examples and Comparative Examples.

【符号の説明】[Explanation of symbols]

1 陽極 2 陰極 3 陽極室 4 陰極室 5 希釈室 6 濃縮室 A 陰イオン交換膜 K 陽イオン交換膜 7 イオン交換体(シ−ト状) 8 希釈室室枠(ガスケット) 9 濃縮室室枠(ガスケット) 10 被処理水供給用導管 11 純水排出用導管 12、13、15 ディストリビュ−タ− S 開口部 14 濃縮水の流通導管 16 ネット 1 Anode 2 Cathode 3 Anode Chamber 4 Cathode Chamber 5 Dilution Chamber 6 Concentration Chamber A Anion Exchange Membrane K Cation Exchange Membrane 7 Ion Exchanger (Sheet) 8 Dilution Chamber Frame (Gasket) 9 Concentration Chamber Frame ( Gasket 10 Pipe for supplying treated water 11 Pipe for discharging pure water 12, 13, 15 Distributor S opening 14 Concentrated water distribution pipe 16 Net

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】陽極を備える陽極室と陰極を備える陰極室
との間に、複数枚の陽イオン交換膜と陰イオン交換膜と
を交互に配列して構成した電気透析槽内に、陽極側が陰
イオン交換膜で区画され、陰極側が陽イオン交換膜で区
画された希釈室と陰極側が陽イオン交換膜で区画され、
陽極側が陰イオン交換膜で区画された濃縮室とを交互に
形成し、該希釈室内に陽イオン交換体と陰イオン交換体
とを収容してなる純水製造装置において、該希釈室にお
ける陽イオン交換体と陰イオン交換体をシ−ト状とする
とともに、該希釈室の厚さを0.1mm〜1.1mmの
範囲としてなることを特徴とする純水製造装置。
1. An electrodialysis cell constituted by alternately arranging a plurality of cation exchange membranes and anion exchange membranes between an anode chamber having an anode and a cathode chamber having a cathode. It is partitioned by an anion exchange membrane, the cathode side is partitioned by a cation exchange membrane, and the cathode side is partitioned by a cation exchange membrane.
In a deionized water producing apparatus in which the anode side is alternately formed with a concentrating chamber partitioned by an anion exchange membrane, and the cation exchanger and the anion exchanger are housed in the diluting chamber, the cation in the diluting chamber A pure water producing apparatus characterized in that the exchanger and the anion exchanger are in the form of sheets and the thickness of the dilution chamber is in the range of 0.1 mm to 1.1 mm.
【請求項2】濃縮室の厚さが0.1mm〜1.1mmで
ある請求項1記載の純水製造装置。
2. The pure water producing apparatus according to claim 1, wherein the concentration chamber has a thickness of 0.1 mm to 1.1 mm.
JP32141294A 1994-11-30 1994-11-30 Pure water making apparatus Pending JPH08155272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32141294A JPH08155272A (en) 1994-11-30 1994-11-30 Pure water making apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32141294A JPH08155272A (en) 1994-11-30 1994-11-30 Pure water making apparatus

Publications (1)

Publication Number Publication Date
JPH08155272A true JPH08155272A (en) 1996-06-18

Family

ID=18132266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32141294A Pending JPH08155272A (en) 1994-11-30 1994-11-30 Pure water making apparatus

Country Status (1)

Country Link
JP (1) JPH08155272A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069079A1 (en) * 1998-03-24 2001-01-17 Ebara Corporation Electric desalting apparatus
JP2001259645A (en) * 2000-03-23 2001-09-25 Japan Organo Co Ltd Deionized water production method
JP2001259646A (en) * 2000-03-23 2001-09-25 Japan Organo Co Ltd Electric deionized water producer
JP2001276835A (en) * 2000-03-28 2001-10-09 Japan Organo Co Ltd Production method of deionized water
JP2001276836A (en) * 2000-03-28 2001-10-09 Japan Organo Co Ltd Production method of deionized water
JP2004507342A (en) * 2000-08-11 2004-03-11 イオニックス,インコーポレーテッド Apparatus and method for electrodialysis

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069079A1 (en) * 1998-03-24 2001-01-17 Ebara Corporation Electric desalting apparatus
EP1069079A4 (en) * 1998-03-24 2006-05-10 Ebara Corp Electric desalting apparatus
JP2001259645A (en) * 2000-03-23 2001-09-25 Japan Organo Co Ltd Deionized water production method
JP2001259646A (en) * 2000-03-23 2001-09-25 Japan Organo Co Ltd Electric deionized water producer
JP4481417B2 (en) * 2000-03-23 2010-06-16 オルガノ株式会社 Deionized water production method
JP2001276835A (en) * 2000-03-28 2001-10-09 Japan Organo Co Ltd Production method of deionized water
JP2001276836A (en) * 2000-03-28 2001-10-09 Japan Organo Co Ltd Production method of deionized water
JP2004507342A (en) * 2000-08-11 2004-03-11 イオニックス,インコーポレーテッド Apparatus and method for electrodialysis

Similar Documents

Publication Publication Date Title
US6193869B1 (en) Modular apparatus for the demineralization of liquids
JP2751090B2 (en) Pure water production equipment
TW423989B (en) Ion exchanger, method of producing the same, apparatus for and method of demineralizing an aqueous liquid
US5154809A (en) Process for purifying water
USRE35741E (en) Process for purifying water
US4747929A (en) Depletion compartment and spacer construction for electrodeionization apparatus
JP2865389B2 (en) Electric deionized water production equipment and frame used for it
MXPA01005250A (en) Method and apparatus for electrodeionization of water using mixed bed and single phase ion exchange materials in diluting compartments.
JPS61107906A (en) Electric deionizing method and device
US20110284376A1 (en) Systems and techniques for electrodialysis
JPH05192657A (en) Method for purifying resin using bipolar surface
US20100133115A1 (en) Devices and methods for acid and base generation
JP4303242B2 (en) Electric desalination module and apparatus equipped with the module
JP3305139B2 (en) Method for producing deionized water by electrodeionization method
US8524062B2 (en) Electrodeionization device and method with improved scaling resistance
JP2010201361A (en) Apparatus for manufacturing electric deionized water and method for manufacturing deionized water using the apparatus
KR20010067206A (en) Electrodeionization apparatus
US3752749A (en) Electrodialytic removal of acid from aqueous effluent
CN1073466C (en) Electrical ion exchange resin regenerating method and equipment
JPH08155272A (en) Pure water making apparatus
WO1997046491A1 (en) Process for producing deionized water by electrical deionization technique
JPH07100391A (en) Electric regeneration type continuous ion exchange device and its use method
JP2020157252A (en) Electric deionized water manufacturing apparatus, and manufacturing method of deionized water
CN213388163U (en) Full-automatic unattended water system
US4769152A (en) Process for removing electrolyte