JPH03275189A - Detection of break point in ion exchange resin and method and equipment for producing pure water and ultrapure water - Google Patents
Detection of break point in ion exchange resin and method and equipment for producing pure water and ultrapure waterInfo
- Publication number
- JPH03275189A JPH03275189A JP2074062A JP7406290A JPH03275189A JP H03275189 A JPH03275189 A JP H03275189A JP 2074062 A JP2074062 A JP 2074062A JP 7406290 A JP7406290 A JP 7406290A JP H03275189 A JPH03275189 A JP H03275189A
- Authority
- JP
- Japan
- Prior art keywords
- ion exchange
- exchange resin
- toc
- water
- 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
Links
- 239000003456 ion exchange resin Substances 0.000 title claims abstract description 47
- 229920003303 ion-exchange polymer Polymers 0.000 title claims abstract description 47
- 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 abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910021642 ultra pure water Inorganic materials 0.000 title claims abstract description 28
- 239000012498 ultrapure water Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 title description 3
- 238000001179 sorption measurement Methods 0.000 claims abstract description 8
- 150000001450 anions Chemical class 0.000 claims abstract description 5
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 4
- 238000000108 ultra-filtration Methods 0.000 claims abstract 3
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 238000005342 ion exchange Methods 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001410 inorganic ion Inorganic materials 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、イオン交換樹脂のブレークポイント（破過点
）の検出方法及び該方法を用いて純水・超純水を製造す
る方法及び装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for detecting a break point of an ion exchange resin, and a method and apparatus for producing pure water/ultrapure water using the method. Regarding.
従来、市水から純水を製造するため、イオン交換プロセ
スが利用されている。このイオン交換プロセスにおいて
は、通水を続けると、イオン交換樹脂のブレークポイン
トに達するので、イオン交換樹脂量や市水中のイオジ量
に応じて樹脂の再生処理を行う必要がある。従来、ブレ
ークポイントの検出には、比抵抗（導電率）計が使用さ
れている。Traditionally, ion exchange processes have been used to produce pure water from city water. In this ion exchange process, if water continues to flow, the break point of the ion exchange resin will be reached, so it is necessary to regenerate the resin depending on the amount of ion exchange resin and the amount of iodine in city water. Conventionally, a resistivity (conductivity) meter has been used to detect breakpoints.
比抵抗計によりブレークポイントを検出する方法は、イ
オン交換樹脂によって無機イオンが交換され、比抵抗値
が低下したときをブレークポイントとするものであるが
、一般に、市水には有機物も含まれているため、−次純
水装置では次に来る超純水装置で有機物を除去しなけれ
ばならない。The method of detecting a breakpoint using a resistivity meter is to detect the breakpoint when inorganic ions are exchanged with an ion exchange resin and the resistivity value decreases, but generally city water also contains organic matter. Therefore, organic matter must be removed in the ultra-pure water equipment that follows the ultra-pure water equipment.
すなわち、有機物除去のため、紫外線酸化装置を大きく
したり、また、超純水装置で使用するカーあった。In other words, in order to remove organic matter, the size of the ultraviolet oxidation equipment was required, and the car used in the ultrapure water equipment was needed.
したがって、本発明は、前記の従来技術の欠点を解消し
、水質の処理目標値を管理するために有機物（ＴＯＣ）
を検出することができ、イオン交換樹脂のブレークポイ
ントを早期に的確に検出する方法及びこの方法を用いて
純水・超純水を効率よく製造しろる方法及び装置を提供
することを目的とする。Therefore, the present invention solves the drawbacks of the prior art described above, and aims to reduce organic matter (TOC) in order to manage the treatment target value of water quality.
The purpose of the present invention is to provide a method for early and accurate detection of breakpoints in ion exchange resins, and a method and apparatus for efficiently producing pure water and ultrapure water using this method. .
本発明は、イオン交換樹脂に有機物が吸着されるが、有
機物の吸着は塩類（無機イオン）より先に飽和点に達し
、イオン交換樹脂によって塩類が交換され、比抵抗値が
低下するより先に有機物が吸着されなくなることを見出
し、この知見に基づいて完成したものである。In the present invention, organic matter is adsorbed to the ion exchange resin, but the organic matter adsorption reaches a saturation point before salts (inorganic ions), and before the salts are exchanged by the ion exchange resin and the specific resistance value decreases. It was discovered that organic substances were no longer adsorbed, and was completed based on this knowledge.
すなわち、本発明によるイオン交換樹脂のブレークポイ
ントの検出方法は、イオン交換樹脂透過水のＴＯＣを測
定し、イオン交換樹脂によるＴＯＣ吸着の飽和点をイオ
ン交換樹脂のブレークポイントとすることを特徴とする
。That is, the method for detecting the break point of an ion exchange resin according to the present invention is characterized by measuring the TOC of water permeated through the ion exchange resin, and setting the saturation point of TOC adsorption by the ion exchange resin as the break point of the ion exchange resin. .
ＴＯＣの測定は、従来公知のＴＯＣ計を用いて行うこと
ができる。TOC measurement can be performed using a conventionally known TOC meter.
本発明によるイオン交換樹脂のブレークポイントの検出
方法は、特に、純水・超純水の製造プロセスに好適に適
用することができ、イオン交換樹脂に通水する水は、市
水ばかりでなく、逆浸透法などによる処理水であっても
よい。The method for detecting breakpoints in ion exchange resins according to the present invention can be particularly suitably applied to processes for producing pure water and ultrapure water. Water treated by reverse osmosis or the like may also be used.
すなわち、本発明は、さらに、イオン交換樹脂装置、低
圧紫外線酸化装置、アニオンポリラシャ、カートリ・・
ジポリ・・シャー及び限外ａ過膜装置に順次通水するこ
とＧこよって純水・超純水を製造する方法において、イ
オン交換装置からの透過水のＴＯＣを測定し、イオン交
換樹脂によるＴ。That is, the present invention further provides an ion-exchange resin device, a low-pressure ultraviolet oxidation device, an anionic polyurethane, a cartridge, etc.
In a method for producing pure water or ultrapure water by sequentially passing water through a dipoly shear and an ultra-a membrane device, the TOC of permeated water from an ion exchange device is measured, and the TOC caused by the ion exchange resin is measured. .
Ｃ吸着が飽和点に達したら、イオン交換樹脂を再生する
ことを特徴とする純水・超純水の製造方法及びイオン交
換樹脂装置、低圧紫外線酸化装置、アニオンポリッシャ
ー、カートリッジボリソシャー及び限外口過膜装置から
成る純水・超純水の製造装置において、イオン交換樹脂
装置の出口側にＴＯＣ計を設置したことを特徴とする純
水・超純水の製造装置を提供するものである。A method for producing pure water and ultrapure water, characterized by regenerating the ion exchange resin when C adsorption reaches the saturation point, and an ion exchange resin device, a low pressure ultraviolet oxidation device, an anion polisher, a cartridge borisosher, and an ultrapure water The present invention provides a pure water/ultra pure water producing apparatus comprising a membrane filter device, characterized in that a TOC meter is installed on the outlet side of the ion exchange resin device. .
さらに、本発明の純水・超純水の製造装置においては、
イオン交換樹脂装置の前に逆浸透装置を接続することも
できる。Furthermore, in the pure water/ultra pure water production apparatus of the present invention,
A reverse osmosis device can also be connected before the ion exchange resin device.
次に、実施例に基づいて本発明をさらに詳しく説明する
が、本発明はこれに限定されるものではない。Next, the present invention will be explained in more detail based on Examples, but the present invention is not limited thereto.
第１図は、本発明の一実施例を示す超純水製造装置の略
本系統図である。第１図に示した超純水製造装置におい
ては、二段逆浸透処理水１をイオン交換樹脂装置２、低
圧紫外線酸化装置３、アニオンポリッシャー４、カート
リッジポリラシャ・−５及び限外口過収装Ｍ６に順次通
水し、超純水７を製造する。この超純水製造装置におい
て、イオン交換樹脂装置２の出口側にばＴＯＣ計８が設
置されている。FIG. 1 is a schematic system diagram of an ultrapure water production apparatus showing an embodiment of the present invention. In the ultrapure water production apparatus shown in FIG. Water is sequentially passed through the container M6 to produce ultrapure water 7. In this ultrapure water production apparatus, a TOC meter 8 is installed on the outlet side of the ion exchange resin device 2.
イオン交換樹脂装置２に通水したときのＴＯＣの経時変
化をＴＯＣ計８で測定した結果を第２図に示す。また、
比較のため、イオン交換樹脂装置２の出口において比抵
抗値を測定し、その経時変化を同様に第２図に示す。第
２図から明らかなとおり、イオン交換樹脂のＴＯＣ吸着
は、塩類より先に行われ、イオン交換樹脂に塩類が吸着
され、比抵抗値が低下するより５時間以上早＜ＴＯＣが
吸着されなくなる。FIG. 2 shows the results of measuring the change in TOC over time using a TOC meter 8 when water was passed through the ion exchange resin device 2. Also,
For comparison, the specific resistance value was measured at the outlet of the ion exchange resin device 2, and its change over time is similarly shown in FIG. As is clear from FIG. 2, the ion exchange resin adsorbs TOC before the salts, and the ion exchange resin adsorbs the salts and stops adsorbing TOC more than 5 hours earlier than the specific resistance value decreases.
したがって、この時点で、イオン交換樹脂を再生すると
、低圧紫外線酸化装置３以降の装置におけるＴＯＣの負
荷が少なくなるため、効率よく超純水を製造することが
できる。Therefore, if the ion exchange resin is regenerated at this point, the TOC load on the devices after the low-pressure ultraviolet oxidation device 3 will be reduced, and ultrapure water can be efficiently produced.
本発明の方法によりイオン交換樹脂のブレークポイント
を検出すれば、イオン交換樹脂によるＴＯＣ吸着が確実
に行われる。したがって、このブレークポイントの検出
方法を純水・超純水の製造に応用することにより後段の
処理装置への負荷が著しく軽減され、効率よく純水・超
純水を製造することができる。If the breakpoint of the ion exchange resin is detected by the method of the present invention, TOC adsorption by the ion exchange resin can be reliably performed. Therefore, by applying this breakpoint detection method to the production of pure water and ultrapure water, the load on the subsequent processing equipment is significantly reduced, and pure water and ultrapure water can be efficiently produced.
第１図は本発明の一実施例を示す超純水の製造装置の系
統図、第２図はイオン交換装置の透過水のＴＯＣ及び比
抵抗値の経時変化図である。
符号の説明
２・・・イオン交換樹脂装置、３・・・低圧紫外線酸化
装置、４・・・アニオンボリッシャー７・・・超純水、
８・・・ＴＯＣ計
特許出廟人
日立プラント建設株式会社
６２５−
○Ｏ，Ｌ
■猾用FIG. 1 is a system diagram of an ultrapure water production apparatus showing an embodiment of the present invention, and FIG. 2 is a diagram of changes over time in TOC and specific resistance values of permeated water from an ion exchange device. Explanation of symbols 2...Ion exchange resin device, 3...Low pressure ultraviolet oxidation device, 4...Anion bolisher 7...Ultra pure water,
8...TOC meter patent author Hitachi Plant Construction Co., Ltd. 625- ○O,L ■For
Claims (4)
交換樹脂によるＴＯＣ吸着の飽和点をイオン交換樹脂の
ブレークポイントとすることを特徴とするイオン交換樹
脂のブレークポイントの検出方法。(1) A method for detecting a break point in an ion exchange resin, which comprises measuring the TOC of water permeated through the ion exchange resin, and setting the saturation point of TOC adsorption by the ion exchange resin as the break point of the ion exchange resin.
オンポリッシャー、カートリッジポリッシャー及び限外
ろ過膜装置に順次通水することによって純水・超純水を
製造する方法において、イオン交換装置からの透過水の
ＴＯＣを測定し、イオン交換樹脂によるＴＯＣ吸着が飽
和点に達したら、イオン交換樹脂を再生することを特徴
とする純水・超純水の製造方法。(2) In a method for producing pure water/ultrapure water by sequentially passing water through an ion exchange resin device, a low-pressure ultraviolet oxidation device, an anion polisher, a cartridge polisher, and an ultrafiltration membrane device, permeated water from the ion exchange device A method for producing pure water or ultrapure water, which comprises measuring the TOC of the ion exchange resin and regenerating the ion exchange resin when the TOC adsorption by the ion exchange resin reaches a saturation point.
オンポリッシャー、カートリッジポリッシャー及び限外
ろ過膜装置から成る純水・超純水の製造装置において、
イオン交換樹脂装置の出口側にＴＯＣ計を設置したこと
を特徴とする純水・超純水の製造装置。(3) In a pure water/ultra pure water production device consisting of an ion exchange resin device, a low pressure ultraviolet oxidation device, an anion polisher, a cartridge polisher, and an ultrafiltration membrane device,
A pure water/ultra pure water production device characterized by a TOC meter installed on the outlet side of an ion exchange resin device.
ている請求項３記載の純水・超純水の製造装置。(4) The pure water/ultra pure water production apparatus according to claim 3, wherein a reverse osmosis device is installed in front of the ion exchange resin device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2074062A JPH03275189A (en) | 1990-03-23 | 1990-03-23 | Detection of break point in ion exchange resin and method and equipment for producing pure water and ultrapure water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2074062A JPH03275189A (en) | 1990-03-23 | 1990-03-23 | Detection of break point in ion exchange resin and method and equipment for producing pure water and ultrapure water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03275189A true JPH03275189A (en) | 1991-12-05 |
Family
ID=13536335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2074062A Pending JPH03275189A (en) | 1990-03-23 | 1990-03-23 | Detection of break point in ion exchange resin and method and equipment for producing pure water and ultrapure water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03275189A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05293468A (en) * | 1992-04-17 | 1993-11-09 | T & C Technical:Kk | Fresh water generating mechanism |
| JP2006075820A (en) * | 2004-08-10 | 2006-03-23 | Kobelco Eco-Solutions Co Ltd | Method and apparatus for treating waste water |
| JP2013208566A (en) * | 2012-03-30 | 2013-10-10 | Kurita Water Ind Ltd | Breakthrough detection method and operation method of ion exchange device |
-
1990
- 1990-03-23 JP JP2074062A patent/JPH03275189A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05293468A (en) * | 1992-04-17 | 1993-11-09 | T & C Technical:Kk | Fresh water generating mechanism |
| JP2006075820A (en) * | 2004-08-10 | 2006-03-23 | Kobelco Eco-Solutions Co Ltd | Method and apparatus for treating waste water |
| JP2013208566A (en) * | 2012-03-30 | 2013-10-10 | Kurita Water Ind Ltd | Breakthrough detection method and operation method of ion exchange device |
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