JPH08108184A - Water treatment system - Google Patents
Water treatment systemInfo
- Publication number
- JPH08108184A JPH08108184A JP6247486A JP24748694A JPH08108184A JP H08108184 A JPH08108184 A JP H08108184A JP 6247486 A JP6247486 A JP 6247486A JP 24748694 A JP24748694 A JP 24748694A JP H08108184 A JPH08108184 A JP H08108184A
- Authority
- JP
- Japan
- Prior art keywords
- water
- monovalent
- ions
- exchange membrane
- cation exchange
- 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
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
(57)【要約】
【目的】再生処理の不要な硬水軟化処理のできる水処理
装置を提供する。
【構成】電気透析セル１，ポンプ２とから構成される。
一価陽イオンと二価陽イオンの混入する原水を電気透析
セル１に供給し、一価イオン選択透過性陽イオン交換膜
４１，非選択性陽イオン交換膜５１によって一価イオン
に富み二価イオンの少ない処理水と二価イオンに富み、
一価イオンの少ない処理水を得る。
(57) [Abstract] [Purpose] To provide a water treatment device capable of softening water without the need for regeneration treatment. [Structure] It is composed of an electrodialysis cell 1 and a pump 2.
Raw water in which monovalent cations and divalent cations are mixed is supplied to the electrodialysis cell 1, and the monovalent ion-selective cation exchange membrane 41 and the nonselective cation exchange membrane 51 enrich the monovalent ions and divalent cations. Rich in treated water with few ions and divalent ions,
Obtained treated water with less monovalent ions.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水処理装置に係り、特
に、一価イオンと二価イオンが混入する水から、一価イ
オンあるいは二価イオンを選択的に除去または濃縮した
処理水を得るのに適した水処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment apparatus, and more particularly to a treated water obtained by selectively removing or concentrating monovalent ions or divalent ions from water mixed with monovalent ions and divalent ions. Water treatment device suitable for obtaining.
【０００２】[0002]
【従来の技術】通常の水道水や井戸水中には、カルシウ
ムイオンＣａ2+やマグネシウムイオンＭｇ2+などの二価
イオンが存在している。これらの二価イオンを多く含む
水は硬水と呼ばれ、ボイラ給水，冷却水，パルプ用水な
どに用いるのに不適である。このため、二価イオンを除
去するため硬水軟化処理が行われる。用水排水便覧編集
委員会編『用水排水便覧 改訂二版』p.３２６〜p.３３
２によれば、二価イオンを除去して硬水軟化処理を行う
ための方法として、Ｎａ型強酸性陽イオン交換樹脂の充
填層に硬水を通して軟水とする方法がある。イオン交換
樹脂の表面には多くのイオン交換基(陽イオンイオン交
換樹脂では通常スルホン基―ＳＯ3-)がついており、こ
の交換基には陽イオンが吸着する。Ｎａ型のイオン交換
樹脂は、この交換基にＮａが吸着したものである。しか
し、この吸着力はＮａ+よりもＣａ2+，Ｍｇ2+のような
二価イオンの方が大きいことから、Ｎａ型のイオン交換
樹脂に二価イオンを含む水を接触させると、水中の二価
イオンがイオン交換基に吸着し、もともと吸着していた
Ｎａは脱離して水中に放出される。このため、水中の二
価イオン（Ｃａ2+やＭｇ2+）は吸着除去され軟水が生成
される。この方法では、使用しているうちに、イオン交
換樹脂中の一価イオンが原水中の二価イオンによって置
き換えられていくので、次第に二価イオンを一価イオン
に置換する能力が低下してくる。このため、イオン交換
膜の再生が必要になる。再生処理は、海水や食塩水，硫
酸ナトリウムなどを用いて行れる。2. Description of the Related Art Divalent ions such as calcium ions Ca 2 + and magnesium ions Mg 2 + are present in ordinary tap water and well water. Water containing a large amount of these divalent ions is called hard water and is not suitable for use as boiler feed water, cooling water, pulp water, etc. Therefore, a water softening treatment is performed to remove divalent ions. Edited Committee for Water and Drainage Handbook, “Second Edition for Water and Drainage Handbook,” p.326-p.33
According to 2, as a method for removing divalent ions and performing softening treatment for hard water, there is a method of making hard water by passing hard water through a packed bed of Na-type strongly acidic cation exchange resin. On the surface of the ion exchange resin, many ion exchange groups (usually a sulfonic acid group —SO 3 — in a cation ion exchange resin) are attached, and cations are adsorbed on the exchange group. The Na-type ion exchange resin has Na adsorbed to the exchange group. However, since this adsorption power is larger for divalent ions such as Ca 2 + and Mg 2 + than for Na +, contacting Na-type ion exchange resin with water containing divalent ions causes The divalent ions are adsorbed on the ion-exchange groups, and Na originally adsorbed is desorbed and released into water. Therefore, divalent ions (Ca 2 + and Mg 2 +) in the water are adsorbed and removed to generate soft water. In this method, the monovalent ions in the ion exchange resin are replaced by the divalent ions in the raw water during use, so the ability to replace the divalent ions with monovalent ions gradually decreases. . Therefore, it is necessary to regenerate the ion exchange membrane. The regeneration treatment is performed using seawater, saline, sodium sulfate or the like.
【０００３】他の方法として、原水中に沈殿剤を加えて
二価イオンを沈殿除去する方法や、キレート剤を添加し
て錯塩を形成させ二価イオンを不活性化する方法がある
が、操作法や管理の容易さ、また得られる処理水の硬度
の低さなどでイオン交換樹脂を使う方法のほうが優れて
いる。Other methods include a method of precipitating and removing divalent ions by adding a precipitating agent to raw water, and a method of adding a chelating agent to form a complex salt to inactivate the divalent ions. The method using an ion-exchange resin is superior because of the ease of the method and management and the low hardness of the treated water.
【０００４】[0004]
【発明が解決しようとする課題】上述したように、従来
のイオン交換樹脂を用いた硬水軟化処理では、イオン交
換樹脂の再生が必要であり、再生を行っている間、硬水
軟化処理を行うことができない。また、再生に必要な薬
品や水を用意する必要がある。As described above, in the conventional water softening treatment using an ion exchange resin, it is necessary to regenerate the ion exchange resin, and the water softening treatment is performed during the regeneration. I can't. In addition, it is necessary to prepare chemicals and water necessary for regeneration.
【０００５】本発明の目的は再生不要な、硬水軟化処理
のできる水処理装置を提供することにある。It is an object of the present invention to provide a water treatment device which does not require regeneration and is capable of softening water.
【０００６】[0006]
【課題を解決するための手段】従来の硬水軟化処理方法
では、イオン交換樹脂により原水中の二価イオンをイオ
ン交換樹脂中の一価イオンと置き換えて硬水軟化を行
う。このため、イオン交換樹脂の再生処理をおこなう必
要があった。そこで、本発明では一価イオン選択透過性
のあるイオン交換膜と非選択透過性イオン交換膜を用い
て、電気透析を行うことにより、この問題を解決した。In the conventional water softening treatment method, divalent ions in the raw water are replaced with monovalent ions in the ion exchange resin by the ion exchange resin to soften the water. Therefore, it is necessary to regenerate the ion exchange resin. Therefore, in the present invention, this problem was solved by performing electrodialysis using an ion exchange membrane having a monovalent ion selective permeability and a non-selective permeation ion exchange membrane.
【０００７】図２は、一価イオン選択透過性陽イオン交
換膜と非選択透過性陽イオン交換膜とで、一価イオンで
あるナトリウムイオンの透過しやすさを調べた結果であ
る。原水には陽イオンとしてナトリウムイオンとカルシ
ウムイオンを溶かしたものを用いた。横軸には、全陽イ
オンに対するナトリウムイオンの存在比をとっている。
縦軸には、全陽イオンのイオン交換膜透過速度に対する
ナトリウムイオンのイオン交換膜透過速度の比をとって
いる。図２から、一価イオン選択性のある陽イオン交換
膜は一価イオンであるナトリウムイオンを優先的に透過
させることがわかる。また、通常の陽イオン交換膜は、
一価の陽イオンよりむしろ二価の陽イオンを透過させや
すいことがわかる。このような一価選択透過性イオン交
換膜と非選択透過性イオン交換膜の性質を利用すれば、
硬水の軟化処理を行うことができる。[0007] FIG. 2 shows the results obtained by examining the easiness of permeation of sodium ions, which are monovalent ions, between a monovalent ion selective permeable cation exchange membrane and a non-selective permeable cation exchange membrane. The raw water used was one in which sodium ions and calcium ions were dissolved as cations. The abscissa represents the abundance ratio of sodium ions to all cations.
The vertical axis represents the ratio of the sodium ion permeation rate to the total cation ion exchange membrane permeation rate. From FIG. 2, it can be seen that the cation exchange membrane having monovalent ion selectivity preferentially permeates monovalent sodium ions. Also, a normal cation exchange membrane is
It can be seen that divalent cations are more easily transmitted than monovalent cations. Utilizing the properties of the monovalent permselective ion exchange membrane and the non-selective permeation ion exchange membrane,
Softening treatment of hard water can be performed.
【０００８】[0008]
【作用】一価イオン選択透過性陽イオン交換膜は、一価
の陽イオンを透過させやすく、二価の陽イオンを透過さ
せにくい。従って、一価イオン選択透過性陽イオン交換
膜を用いて電気透析すると、濃縮液は一価の陽イオンが
多く二価の陽イオンが少ない軟水が得られ、脱塩液は二
価の陽イオンが多く、一価の陽イオンが少ない硬水が得
られる。また、通常の非選択透過性陽イオン交換膜は、
二価の陽イオンを透過させやすく、一価の陽イオンを透
過させにくい。従って、電気透析によって、濃縮液とし
て硬水が得られ、脱塩液として軟水が得られる。これら
の操作を別々に行うよりは、一つの電気透析装置として
構成した方がより効率よく軟水と硬水を作ることができ
る。[Function] The monovalent ion selective permeable cation exchange membrane is permeable to monovalent cations and is difficult to permeate divalent cations. Therefore, when electrodialysis is performed using a monovalent ion selective permeable cation exchange membrane, concentrated liquid yields soft water with a large amount of monovalent cations and a small amount of divalent cations, and a desalted liquid contains divalent cations. Hard water containing a large amount of monovalent cations is obtained. In addition, the usual non-selective permeation cation exchange membrane is
Divalent cations are easily transmitted, and monovalent cations are difficult to be transmitted. Therefore, electrodialysis gives hard water as a concentrate and soft water as a desalting solution. Rather than performing these operations separately, soft water and hard water can be produced more efficiently when configured as one electrodialysis device.
【０００９】具体的には図１のような装置を用いる。図
１の装置では、電気透析セル１の中央に導電性の板６１
をおき、右側に一価イオン選択透過性陽イオン交換膜、
左側に非選択透過性陽イオン交換膜がある。導電性の板
６１は液は通さないが電気は通すので電気透析セル全体
に電圧がかかる。原水は、脱塩室１１と脱塩室１３に供
給される。脱塩室１１では、一価の陽イオンが少ない水
が作られ濃縮室１４に入る。濃縮室１４では脱塩室１３
から二価イオンが透過してくる。このため、処理水３３
は硬水となる。一方、脱塩室１３では二価の陽イオンが
少ない水が作られ濃縮室１２に入る。濃縮室１２では脱
塩室１１から一価のイオンが透過してくる。このため、
処理水３２は軟水となる。このようにして、軟水と硬水
を効率的に得ることができる。Specifically, an apparatus as shown in FIG. 1 is used. In the apparatus of FIG. 1, a conductive plate 61 is provided in the center of the electrodialysis cell 1.
Place the monovalent ion permselective cation exchange membrane on the right side,
On the left is the non-selective cation exchange membrane. Since the electrically conductive plate 61 does not allow passage of liquid but allows electricity to pass therethrough, a voltage is applied to the entire electrodialysis cell. Raw water is supplied to the desalination chamber 11 and the desalination chamber 13. In the desalting chamber 11, water containing a small amount of monovalent cations is produced and enters the concentrating chamber 14. Desalination chamber 13 in concentration chamber 14
The divalent ions permeate through it. Therefore, treated water 33
Becomes hard water. On the other hand, in the desalting chamber 13, water containing a small amount of divalent cations is produced and enters the concentration chamber 12. In the concentration chamber 12, monovalent ions permeate from the desalting chamber 11. For this reason,
The treated water 32 becomes soft water. In this way, soft water and hard water can be efficiently obtained.
【００１０】[0010]
【実施例】以下、図１，図３，図４，図５を用いて本発
明の実施例を詳細に説明する。Embodiments of the present invention will be described in detail below with reference to FIGS. 1, 3, 4, and 5.
【００１１】図１に本発明に係る水処理装置の一実施例
を示す。水処理装置は、電気透析セル１，ポンプ２から
構成される。電気透析セル１は、一価選択透過性陽イオ
ン交換膜４１，非選択性陽イオン交換膜５１、および電
源２１から構成されている。一価のナトリウムイオン，
カリウムイオンと二価のマグネシウムイオン，カルシウ
ムイオンを含む原水はポンプ２より原水供給系３１に送
られ電気透析セル１に入る。電気透析セル１内は、陽極
側から、一価選択透過性陽イオン交換膜４１，導電性の
仕切板６１，非選択性陽イオン交換膜５１の順に配列し
てあり、それぞれの間には流体の流れる流路が形成され
ている。これに直流電圧を印加すると、電気透析セル１
中央の導電性の仕切板６１は、液は通さないが電気は通
すので、電気透析セル１の内部全体に電圧がかかる。脱
塩室１１に送られた原水中の一価陽イオンは、一価選択
透過性陽イオン交換膜４１を透過して濃縮室１２に入
る。二価陽イオンは一価選択透過性陽イオン膜４１を透
過しにくいため脱塩室１１に残留する。一方、脱塩室１
３に送られた原水中の二価陽イオンは、非選択性陽イオ
ン交換膜５１を透過して濃縮室１４に入る。非選択性陽
イオン交換膜５１は、どちらかというと二価の陽イオン
を透過し易く、一価の陽イオンは透過しにくい。従っ
て、一価の陽イオンの多くは脱塩室１３に残留する。二
価陽イオンに富んだ脱塩室１１の脱塩液と一価陽イオン
に富んだ脱塩室１３の脱塩液はそれぞれ循環系７２，７
１を通って濃縮室１４，１２に入る。濃縮室１２では脱
塩室１１から一価の陽イオンが入ってくるので、さらに
一価陽イオンが濃縮される。また、濃縮室１４では脱塩
室１３から二価の陽イオンが入ってくるので、二価陽イ
オンが濃縮され、処理水３３として取り出される。一価
の陽イオンに富み、二価の陽イオンが少ない処理水３２
はボイラ給水としてボイラ給水タンク１０２に蓄えられ
る。また、二価の陽イオンに富んだ水は、飲用としたと
き美味であることが知られており、二価のイオンに富む
処理水３３は飲用として価値が高い。飲用として実際に
用いる場合には、二価イオンの濃度を適当に調整する。FIG. 1 shows an embodiment of the water treatment device according to the present invention. The water treatment device comprises an electrodialysis cell 1 and a pump 2. The electrodialysis cell 1 is composed of a monovalent permselective cation exchange membrane 41, a non-selective cation exchange membrane 51, and a power source 21. Monovalent sodium ion,
Raw water containing potassium ions and divalent magnesium ions and calcium ions is sent from the pump 2 to the raw water supply system 31 and enters the electrodialysis cell 1. Inside the electrodialysis cell 1, a monovalent permselective cation exchange membrane 41, a conductive partition plate 61, and a non-selective cation exchange membrane 51 are arranged in this order from the anode side, and a fluid is provided between them. Is formed. When a DC voltage is applied to this, electrodialysis cell 1
Since the central electrically conductive partition plate 61 does not allow passage of liquid but electricity, a voltage is applied to the entire interior of the electrodialysis cell 1. The monovalent cations of the raw water sent to the desalting chamber 11 permeate the monovalent permselective cation exchange membrane 41 and enter the concentrating chamber 12. The divalent cations do not easily pass through the monovalent selectively permeable cation membrane 41, and thus remain in the desalting chamber 11. On the other hand, desalination chamber 1
The divalent cations in the raw water sent to 3 pass through the non-selective cation exchange membrane 51 and enter the concentration chamber 14. The non-selective cation exchange membrane 51 is rather permeable to divalent cations and is less permeable to monovalent cations. Therefore, most of the monovalent cations remain in the desalting chamber 13. The desalting solution in the desalting chamber 11 rich in divalent cations and the desalting solution in the desalting chamber 13 rich in monovalent cations are in circulation systems 72 and 7, respectively.
Pass through 1 to enter the concentrating chambers 14, 12. In the concentration chamber 12, monovalent cations enter from the desalting chamber 11, so that the monovalent cations are further concentrated. Further, in the concentration chamber 14, since divalent cations enter from the desalting chamber 13, the divalent cations are concentrated and taken out as treated water 33. Treated water 32 rich in monovalent cations and low in divalent cations 32
Is stored in the boiler water supply tank 102 as boiler water supply. Further, it is known that the water rich in divalent cations is delicious when it is drunk, and the treated water 33 rich in divalent ions is highly valuable for drinking. When actually used for drinking, adjust the concentration of divalent ions appropriately.
【００１２】図１における実施例において、一価選択透
過性陽イオン交換膜の替わりに一価選択透過性陰イオン
交換膜を用い、非選択透過性陽イオン交換膜の替わりに
非選択透過性陰イオン交換膜を用いても同様の効果を得
ることができる。In the embodiment shown in FIG. 1, a monovalent permselective cation exchange membrane is used in place of the monovalent permselective cation exchange membrane, and a non-selective permeation anion membrane is used in place of the non-selective permeation cation exchange membrane. The same effect can be obtained by using an ion exchange membrane.
【００１３】図３に本発明に係る水処理装置の一実施例
を示す。図３の水処理装置は、実施例における電気透析
セルを多段型にしたものである。これにより、より効率
の高い一価陽イオンと二価陽イオンの分離ができる。電
気透析セル１は一価選択透過性陽イオン交換膜４１，４
２，４３を用いた電気透析セルと非選択性陽イオン交換
膜５１，５２を用いた電気透析セルをステンレス製仕切
板６１，６２，６３，６４を挟んで交互に接合して構成
されている。図１の実施例と同様に、脱塩室１３，１７
において二価の陽イオンが濃縮室１４，１８へ透過して
いき、濃縮室１２，１６，２０において脱塩室１１，１
５，１９より透過してきた一価イオンにより一価イオン
が濃縮される。また、脱塩室１１，１５，１９において
一価イオンが濃縮室１２，１６，２０へ透過していき、
濃縮室１４，１８において脱塩室１３，１７より透過し
てきた二価陽イオンにより濃縮される。FIG. 3 shows an embodiment of the water treatment device according to the present invention. The water treatment apparatus of FIG. 3 is a multistage type of the electrodialysis cell in the example. This allows more efficient separation of monovalent cations and divalent cations. The electrodialysis cell 1 is a monovalent permselective cation exchange membrane 41, 4
Electrodialysis cells using Nos. 2, 43 and electrodialysis cells using non-selective cation exchange membranes 51, 52 are alternately joined with stainless steel partition plates 61, 62, 63, 64 interposed therebetween. . Similar to the embodiment of FIG. 1, the desalting chambers 13, 17
In the concentration chambers 12, 16 and 20, divalent cations permeate into the concentration chambers 14 and 18, and in the concentration chambers 12, 16 and 20,
Monovalent ions are concentrated by the monovalent ions that have permeated from 5, 19. In the desalting chambers 11, 15, 19 monovalent ions permeate into the concentrating chambers 12, 16, 20,
In the concentration chambers 14 and 18, they are concentrated by the divalent cations that have permeated from the desalting chambers 13 and 17.
【００１４】図４に本発明に係る水処理装置の一実施例
を示す。上記実施例における多段型の電気透析セルを、
一価イオン選択透過させるセルと二価イオンを選択透過
させるセルに分割したものである。設置場所の広さや形
状などの都合で、図３の実施例における水処理装置が設
置できない場合に向いている。FIG. 4 shows an embodiment of the water treatment device according to the present invention. The multi-stage electrodialysis cell in the above example,
It is divided into a cell for selectively permeating monovalent ions and a cell for selectively permeating divalent ions. This is suitable when the water treatment device in the embodiment of FIG. 3 cannot be installed due to the size and shape of the installation location.
【００１５】図５に本発明の水処理装置の一実施例を示
す。図５の実施例では電気透析セルに新たに、一価イオ
ン選択透過性陰イオン交換膜８１と非選択透過性陰イオ
ン交換膜９１を設けている。一価イオン選択透過性陰イ
オン交換膜は、一価の陰イオンを透過させやすい性質を
持っている。また、非選択性陰イオン交換膜はどちらか
というと二価の陰イオンを透過させやすい性質を持って
いる。原水には、Ｎａ2ＳＯ4とＣａＣｌ2が溶けた水を
用いている。原水は原水供給系３１を通って、脱塩室１
１，１５に入る。脱塩室１１からは、一価選択透過性陽
イオン交換膜４１の作用によって、おもに一価陽イオン
のナトリウムイオンが濃縮室１２へ透過していく。脱塩
室１１の脱塩液は循環系７３を通って、脱塩室１４に入
り、一価イオン選択透過性陰イオン交換膜の作用によ
り、おもに塩素イオンが濃縮室１３に向かって透過して
いく。脱塩室１４の液は、濃縮室１７において硫酸イオ
ンの透過を受け、さらに濃縮室１６においてカルシウム
イオンの透過を受ける。こうして流出した処理水３５
は、ＣａＳＯ4 をおもな成分として含む水となる。また
同様に、脱塩室１５に入った原水は、非選択透過性陽イ
オン交換膜の作用によって、おもに二価のカルシウムイ
オンが濃縮室１６に向かって透過していく。脱塩室１５
の脱塩液は循環系７４を通って、脱塩室１８に入る。脱
塩室１８では非選択透過性陰イオン交換膜の作用によっ
て、おもに硫酸イオンが濃縮室１７に向かって透過して
いく。脱塩室１８の脱塩液は、濃縮室１３において塩素
イオンの透過を受け、さらに濃縮室１２においてナトリ
ウムイオンの透過を受ける。こうして流出した処理水３
４はおもな成分としてＮａＣｌを含む。図５の装置を用
いれば、二種の塩の間で、塩を構成するイオンを交換し
た塩を作り、取り出すことができる。FIG. 5 shows an embodiment of the water treatment device of the present invention. In the embodiment of FIG. 5, a monovalent ion selective permeable anion exchange membrane 81 and a non-selective permeable anion exchange membrane 91 are newly provided in the electrodialysis cell. The monovalent ion selective permeable anion exchange membrane has a property of easily passing monovalent anions. In addition, the non-selective anion exchange membrane has a property of easily transmitting a divalent anion. As raw water, water in which Na 2 SO 4 and CaCl 2 are dissolved is used. The raw water passes through the raw water supply system 31 and the desalination chamber 1
Enter 1,15. From the desalting chamber 11, sodium ions of monovalent cations mainly permeate into the concentrating chamber 12 due to the action of the monovalent selectively permeable cation exchange membrane 41. The desalted solution in the desalting chamber 11 enters the desalting chamber 14 through the circulation system 73, and mainly due to the action of the monovalent ion selective permeable anion exchange membrane, chlorine ions permeate toward the concentrating chamber 13. Go. The liquid in the desalting chamber 14 is permeated with sulfate ions in the concentrating chamber 17, and further permeated with calcium ions in the concentrating chamber 16. Treated water 35 thus discharged
Is water containing CaSO 4 as a main component. Similarly, in the raw water that has entered the desalting chamber 15, mainly divalent calcium ions permeate toward the concentrating chamber 16 due to the action of the non-selective permeation cation exchange membrane. Desalination chamber 15
The desalination solution of No. 2 passes through the circulation system 74 and enters the desalination chamber 18. In the desalting chamber 18, sulfate ions mainly permeate toward the concentrating chamber 17 due to the action of the non-selective permeation anion exchange membrane. The desalted liquid in the desalting chamber 18 is permeated with chlorine ions in the concentrating chamber 13, and further permeated with sodium ions in the concentrating chamber 12. Treated water 3 thus discharged
4 contains NaCl as a main component. By using the apparatus shown in FIG. 5, it is possible to make and take out a salt in which the ions constituting the salt are exchanged between two kinds of salts.
【００１６】[0016]
【発明の効果】本発明によれば、一価イオン選択性イオ
ン交換膜と通常の非選択透過性イオン交換膜を組み合わ
せて、電気透析を行うことにより、従来必要であったイ
オン交換樹脂の再生が不要な硬水軟化処理を行うことが
できる。また、同時に飲用に適した二価イオンに富む処
理水も得られる。INDUSTRIAL APPLICABILITY According to the present invention, a monovalent ion-selective ion exchange membrane and an ordinary non-selective permeation ion-exchange membrane are combined and electrodialysis is performed to regenerate the ion-exchange resin, which has been conventionally required. It is possible to perform a softening treatment with water that is unnecessary. At the same time, treated water rich in divalent ions suitable for drinking can be obtained.
【図１】本発明の水処理装置の一実施例のブロック図。FIG. 1 is a block diagram of an embodiment of a water treatment device of the present invention.
【図２】一価イオン選択透過性陽イオン交換膜および非
選択性陽イオン交換膜の一価イオン透過性の特性図。FIG. 2 is a characteristic diagram of monovalent ion permeation cation exchange membrane and non-selective cation exchange membrane monovalent ion permeability.
【図３】本発明の水処理装置の第二実施例のブロック
図。FIG. 3 is a block diagram of a second embodiment of the water treatment device of the present invention.
【図４】本発明の水処理装置の第三実施例のブロック
図。FIG. 4 is a block diagram of a third embodiment of the water treatment device of the present invention.
【図５】本発明の水処理装置の第四実施例のブロック
図。FIG. 5 is a block diagram of a fourth embodiment of the water treatment device of the present invention.
１…電気透析セル、２…ポンプ、１１〜２０…脱塩室ま
たは濃縮室、２１…電源、３１…原水供給系、３２，３
３…処理水、４１…一価選択透過性陽イオン交換膜、５
１…非選択性陽イオン交換膜、６１…ステンレス製仕切
板、７１，７２…循環系。DESCRIPTION OF SYMBOLS 1 ... Electrodialysis cell, 2 ... Pump, 11-20 ... Desalination chamber or concentration chamber, 21 ... Power supply, 31 ... Raw water supply system, 32, 3
3 ... Treated water, 41 ... Monovalent permselective cation exchange membrane, 5
1 ... Nonselective cation exchange membrane, 61 ... Stainless partition plates, 71, 72 ... Circulation system.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 船橋 清美 茨城県日立市大みか町七丁目２番１号 株 式会社日立製作所エネルギー研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiyomi Funabashi 7-2-1 Omika-cho, Hitachi-shi, Ibaraki Hitachi Energy Research Laboratory, Ltd.
Claims (6)
水または硬水製造装置において、一価イオン選択透過性
イオン交換膜と非選択透過性イオン交換膜それぞれを用
いた電気透析法の直列処理を行い、硬水と軟水を同時に
生成することを特徴とする水処理システム。1. In an apparatus for producing soft water or hard water for removing or concentrating hardness components in water, series treatment of electrodialysis using a monovalent ion selective permeable ion exchange membrane and a non-selective permeable ion exchange membrane is performed. , A water treatment system that simultaneously generates hard water and soft water.
陽イオン交換膜，導電性の板および非選択透過性陽イオ
ン交換膜を交互に配置した電解透析セルを用いる電気透
析セル。2. An electrodialysis cell according to claim 1, which uses an electrolytic dialysis cell in which monovalent ion-selective permeable cation exchange membranes, conductive plates and non-selective permeable cation exchange membranes are alternately arranged.
も、一価陽イオンとしてナトリウムイオンとカリウムイ
オン、二価陽イオンとしてマグネシウムイオンとカルシ
ウムイオンを含む原水を使用する電気透析装置。3. The electrodialysis apparatus according to claim 1, wherein the treated raw water is raw water containing at least sodium ions and potassium ions as monovalent cations and magnesium ions and calcium ions as divalent cations.
陽イオン交換膜を用いた電気透析セルと非選択透過性陽
イオン交換膜を用いた電気透析セルを直列に配置する水
処理システム。4. The water treatment system according to claim 1, wherein an electrodialysis cell using a monovalent ion permselective cation exchange membrane and an electrodialysis cell using a non-selective permeation cation exchange membrane are arranged in series.
防止加工を施した金属板を用いる電気透析セル。5. The electrodialysis cell according to claim 2, wherein a metal plate subjected to corrosion prevention processing is used as the conductive plate.
いる水処理システム。6. The water treatment system according to claim 1, wherein tap water is used as raw water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6247486A JPH08108184A (en) | 1994-10-13 | 1994-10-13 | Water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6247486A JPH08108184A (en) | 1994-10-13 | 1994-10-13 | Water treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08108184A true JPH08108184A (en) | 1996-04-30 |
Family
ID=17164188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6247486A Pending JPH08108184A (en) | 1994-10-13 | 1994-10-13 | Water treatment system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08108184A (en) |
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|---|---|---|---|---|
| JP2003136064A (en) * | 2001-11-05 | 2003-05-13 | Kurita Water Ind Ltd | Boiler wastewater treatment method |
| JP2003136065A (en) * | 2001-11-05 | 2003-05-13 | Kurita Water Ind Ltd | Boiler feedwater treatment equipment |
| JP2005041784A (en) * | 2003-07-23 | 2005-02-17 | Kao Corp | Purification method of sugar phosphate ester |
| JP2008100175A (en) * | 2006-10-19 | 2008-05-01 | Japan Organo Co Ltd | Daily life water feed method and arrangement |
| WO2010016160A1 (en) * | 2008-08-07 | 2010-02-11 | パナソニック株式会社 | Demineralizer and hot water supply apparatus provided with the same |
| JP2012187582A (en) * | 2012-04-27 | 2012-10-04 | Canon Inc | Removal method for remove removal object ion from liquid that contains electrolyte |
| JP2014528824A (en) * | 2011-09-08 | 2014-10-30 | ゼネラル・エレクトリック・カンパニイ | Desalination system and method |
| US9527757B2 (en) | 2011-05-31 | 2016-12-27 | General Electric Company | Supercapacitor desalination cells, devices and methods |
| WO2017137748A1 (en) * | 2016-02-11 | 2017-08-17 | Fujifilm Manufacturing Europe Bv | Desalination |
| CN108383336A (en) * | 2018-05-09 | 2018-08-10 | 湖北迪曼特科技有限公司 | A kind of oxidation aluminium waste water treatment system |
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-
1994
- 1994-10-13 JP JP6247486A patent/JPH08108184A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003136064A (en) * | 2001-11-05 | 2003-05-13 | Kurita Water Ind Ltd | Boiler wastewater treatment method |
| JP2003136065A (en) * | 2001-11-05 | 2003-05-13 | Kurita Water Ind Ltd | Boiler feedwater treatment equipment |
| JP2005041784A (en) * | 2003-07-23 | 2005-02-17 | Kao Corp | Purification method of sugar phosphate ester |
| JP2008100175A (en) * | 2006-10-19 | 2008-05-01 | Japan Organo Co Ltd | Daily life water feed method and arrangement |
| WO2010016160A1 (en) * | 2008-08-07 | 2010-02-11 | パナソニック株式会社 | Demineralizer and hot water supply apparatus provided with the same |
| US9527757B2 (en) | 2011-05-31 | 2016-12-27 | General Electric Company | Supercapacitor desalination cells, devices and methods |
| JP2014528824A (en) * | 2011-09-08 | 2014-10-30 | ゼネラル・エレクトリック・カンパニイ | Desalination system and method |
| US9481586B2 (en) | 2011-09-08 | 2016-11-01 | General Electric Company | Desalination system and method |
| JP2012187582A (en) * | 2012-04-27 | 2012-10-04 | Canon Inc | Removal method for remove removal object ion from liquid that contains electrolyte |
| WO2017137748A1 (en) * | 2016-02-11 | 2017-08-17 | Fujifilm Manufacturing Europe Bv | Desalination |
| US11014049B2 (en) | 2016-02-11 | 2021-05-25 | Fujifilm Manufacturing Europe B.V. | Desalination |
| CN108383336A (en) * | 2018-05-09 | 2018-08-10 | 湖北迪曼特科技有限公司 | A kind of oxidation aluminium waste water treatment system |
| CN108452681A (en) * | 2018-05-09 | 2018-08-28 | 湖北迪曼特科技有限公司 | A kind of electrodialysis plant for Industrial Wastewater Treatment |
| JP2021098153A (en) * | 2019-12-19 | 2021-07-01 | 住友重機械工業株式会社 | Concentration device, concentration method, and carbon dioxide immobilization system |
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