JP2018111058A - Operating method of water treating apparatus - Google Patents
Operating method of water treating apparatus Download PDFInfo
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- JP2018111058A JP2018111058A JP2017001990A JP2017001990A JP2018111058A JP 2018111058 A JP2018111058 A JP 2018111058A JP 2017001990 A JP2017001990 A JP 2017001990A JP 2017001990 A JP2017001990 A JP 2017001990A JP 2018111058 A JP2018111058 A JP 2018111058A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 277
- 238000011017 operating method Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 claims description 24
- 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 claims description 23
- 239000003456 ion exchange resin Substances 0.000 claims description 23
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 230000006866 deterioration Effects 0.000 claims description 12
- 238000005342 ion exchange Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- 239000013522 chelant Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000012535 impurity Substances 0.000 description 8
- 239000012528 membrane Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
本発明は、イオン交換樹脂塔、活性炭塔などの水処理器が複数個、並列設置されている水処理装置を運転する方法に係り、特に水処理器の水処理能力を十分に使い尽すように運転する方法に関する。 The present invention relates to a method for operating a water treatment device in which a plurality of water treatment devices such as an ion exchange resin tower and an activated carbon tower are installed in parallel, and in particular, to fully use the water treatment capacity of the water treatment device. It relates to how to drive.
ボイラー用水などの一般産業用純水、発電所で用いられる高度な純水、半導体工場・液晶工場などでウェハや基板の洗浄水・リンス水として使われる超純水は、ほとんど全てが被処理水中に含まれる不純物を除去する水処理器を複数組み合わせて使う水処理システムにより製造されている。水処理器としては、イオン交換樹脂塔、活性炭塔、ＲＯ膜装置、ＵＦ膜装置、イオン交換フィルターなどが広く用いられている。 Almost all of the industrial pure water such as boiler water, advanced pure water used in power plants, and ultrapure water used as wafer and substrate cleaning water and rinse water in semiconductor factories and liquid crystal factories are treated water. It is manufactured by a water treatment system that uses a plurality of water treatment devices that remove impurities contained in the water. As water treatment devices, ion exchange resin towers, activated carbon towers, RO membrane devices, UF membrane devices, ion exchange filters, and the like are widely used.
これらの水処理器の使用方法としては、不純物除去工程と再生工程を繰り返して使う方法のほか、一定水準まで使用した段階で新品に更新する一過式の使用方法などがある。いずれの場合も、所望の処理水質を保ちつつ不純物除去工程（通水工程）を長く保つことが望ましい。 As a method of using these water treatment devices, there are a method of repeatedly using an impurity removal step and a regeneration step, and a temporary method of updating to a new product when used to a certain level. In either case, it is desirable to keep the impurity removal step (water flow step) long while maintaining the desired treated water quality.
水処理器は、処理水質の悪化傾向が認められた場合でも、速やかに再生あるいは新品への更新に移ることが困難な場合が多い。そのため、実際には一定期間ごと、あるいは一定処理量ごとに、計画的に再生・更新を行うことが行われている。 In many cases, it is difficult to promptly regenerate or replace a water treatment device with a new one even when a tendency to deteriorate the quality of treated water is observed. Therefore, in practice, regeneration / update is performed in a planned manner at regular intervals or at regular intervals.
しかしながら、被処理水の水質は年中一定と限らないため、一定期間ごと、あるいは一定処理量ごとの再生・更新を行う場合には、被処理水の水質が厳しい（除去すべき不純物濃度が高い）状態を前提に条件設定されるので、結果的にある程度余裕のある時点での再生・更新となることが多い。また、そうしないと所望の水質を確保できないリスクがある。 However, since the quality of the water to be treated is not always constant throughout the year, the quality of the water to be treated is strict (when the concentration of impurities to be removed is high) ) Since the condition is set on the assumption of the state, the reproduction / update is often performed at a time when there is some margin as a result. Otherwise, there is a risk that the desired water quality cannot be ensured.
特許文献１には、実機のイオン交換樹脂装置と並列に小型のイオン交換樹脂充填カラムを設置し、この小型のイオン交換樹脂充填カラムに同一の原水（被処理水）を通水してその処理水質を監視し、イオン交換樹脂装置の残寿命を推定する方法が記載されている。 In Patent Document 1, a small ion exchange resin packed column is installed in parallel with the actual ion exchange resin device, and the same raw water (treated water) is passed through the small ion exchange resin packed column to treat it. A method for monitoring water quality and estimating the remaining life of an ion exchange resin apparatus is described.
小型のイオン交換樹脂充填容器による寿命予測においては、ＳＶ、ＬＶなどを実機に極力近づけ、かつやや厳しい条件での通水とすることが一般的であるが、実機への負荷状況を正確に反映することは困難であり、ここでもある程度の余裕シロを考慮に入れた扱いが必要となっている。 When predicting the life of a small ion exchange resin-filled container, it is common to make SV, LV, etc. as close as possible to the actual machine and water flow under somewhat severe conditions, but accurately reflects the load situation on the actual machine It is difficult to do this, and here too, it is necessary to take into account a certain amount of margin.
本発明の要旨は次の通りである。
［１］ 並列設置された複数の同種かつ同処理容量の水処理器を有する水処理装置を運転する方法であって、各水処理器に同一の被処理水を通水して処理水を採水する水処理装置の運転方法において、一部の水処理器Ａへの通水を他の水処理器Ｂよりも高負荷とし、該水処理器Ａの処理水の水質悪化が生じた場合、それまでの水処理器Ａへの積算負荷から水処理器Ｂの寿命を予測し、この予測結果に基づいて、その後の各水処理器への通水量及び通水時間を制御することを特徴とする水処理装置の運転方法。
The gist of the present invention is as follows.
[1] A method of operating a water treatment apparatus having a plurality of water treatment devices of the same type and the same treatment capacity installed in parallel, and the treated water is collected by passing the same treated water through each water treatment device. In the operation method of the water treatment apparatus that performs water treatment, when water passing through some of the water treatment devices A has a higher load than other water treatment devices B, and the water quality of the treated water of the water treatment devices A deteriorates, It is characterized by predicting the life of the water treatment device B from the accumulated load on the water treatment device A so far, and controlling the water flow amount and the water flow time to each subsequent water treatment device based on the prediction result. To operate the water treatment device.
［２］ ［１］において、前記水処理器の水質悪化が生じるまでは、前記水処理器Ａへの通水速度を水処理器Ｂの通水速度の１．０５〜１．３倍とすることを特徴とする水処理装置の運転方法。 [2] In [1], the water flow rate to the water treatment device A is set to 1.05 to 1.3 times the water flow rate of the water treatment device B until the water quality of the water treatment device is deteriorated. A method for operating a water treatment apparatus.
［３］ ［１］又は［２］において、水処理器Ａの処理水の水質が所定値にまで悪化した時点までの水処理器Ａへの積算負荷を寿命負荷とし、当該時点までの水処理器Ｂへの積算負荷と該寿命負荷との差（以下、負荷差という。）を求め、当該時点から採水終了までの間に水処理器Ｂに加えられる負荷が該負荷差となるように、該時点以降の水処理器Ｂへの通水速度と通水時間を設定することを特徴とする水処理装置の運転方法。 [3] In [1] or [2], the accumulated load on the water treatment device A up to the time when the quality of the treated water in the water treatment device A deteriorates to a predetermined value is defined as the life load, and the water treatment up to that time The difference between the integrated load on the water container B and the life load (hereinafter referred to as a load difference) is obtained, and the load applied to the water treatment device B from the time point to the end of sampling is the load difference. The operation method of the water treatment apparatus characterized by setting the water flow speed and water flow time to the water treatment device B after the time.
［４］ ［１］ないし［３］のいずれかにおいて、前記時点以降は水処理器Ａへの通水を停止し、水処理装置全体における単位時間当りの必要処理水量を水処理器Ｂの数で除算した単位時間当り通水量を各水処理器Ｂへの通水速度とし、
この通水速度と、前記時点から採水終了までの通水時間との積から求まる負荷が前記負荷差となるように、該通水時間を設定することを特徴とする水処理装置の運転方法。
[4] In any one of [1] to [3], water supply to the water treatment device A is stopped after the time point, and the required amount of treated water per unit time in the entire water treatment device is determined by the number of water treatment devices B. The water flow rate per unit time divided by the water flow rate to each water treatment device B,
A method for operating a water treatment apparatus, wherein the water passage time is set so that a load obtained from the product of the water passage speed and the water passage time from the time point to the end of sampling is the load difference. .
［５］ ［１］ないし［４］のいずれかにおいて、前記水処理器は、容器にイオン交換樹脂、活性炭、イオン交換フィルター、キレート樹脂又は触媒を充填したものであることを特徴とする水処理装置の運転方法。 [5] The water treatment according to any one of [1] to [4], wherein the water treatment device is a container filled with an ion exchange resin, activated carbon, an ion exchange filter, a chelate resin, or a catalyst. How to operate the device.
本発明では、一部（１個又は少数個）の水処理器を、処理水質低下を検出するためのパイロット用とし、他の水処理器よりも若干高負荷（例えば高通水速度）通水し、このパイロット用の水処理器の処理水の水質の悪化の兆候から水処理器の寿命を予測する。そして、各水処理器を寿命ぎりぎりまで使い尽すように、その後の通水条件を設定する。 In the present invention, a part (one or a small number) of water treatment devices is used for pilots for detecting deterioration of treated water, and the water treatment device passes water slightly higher (for example, a high water flow rate) than other water treatment devices. The life of the water treatment device is predicted from the signs of deterioration of the quality of the treated water of the pilot water treatment device. Then, subsequent water flow conditions are set so that each water treatment device is used up to the end of its lifetime.
これにより、通常の水処理システムに対して特段の測定機器、制御機器等を追加設置することなく、所望水質を維持しつつ、各水処理器を寿命ぎりぎりまで使い尽くすことができる。高負荷通水した一部の水処理器で水質悪化兆候を察知した場合でも、直ちには水処理装置全体の寿命には至らないので、水処理器の再生・更新の準備を整えた上での対応が無理なく行うことができる。 Accordingly, each water treatment device can be used up to the end of its lifetime while maintaining the desired water quality without additionally installing special measurement devices, control devices, and the like with respect to a normal water treatment system. Even if some water treatment devices that have passed through a high load detect signs of deterioration in water quality, the life of the entire water treatment device will not be reached immediately. It can be done without difficulty.
以下、図１を参照して実施の形態について説明する。なお、この実施の形態の説明では、水処理器はイオン交換樹脂塔とされているが、活性炭塔、キレート樹脂塔、触媒塔、イオン交換フィルター、ＭＦ膜装置、ＵＦ膜装置、ＲＯ膜装置などであってもよい。好適には寿命が明確なイオン交換樹脂塔、イオン交換フィルター、キレート樹脂塔、活性炭塔、触媒塔などが挙げられる。また、超純水製造のために、水中不純物を除去する水処理のほか、純水製造以外の、液中不純物除去にも適用することができる。 Hereinafter, an embodiment will be described with reference to FIG. In the description of this embodiment, the water treatment device is an ion exchange resin tower, but the activated carbon tower, chelate resin tower, catalyst tower, ion exchange filter, MF membrane device, UF membrane device, RO membrane device, etc. It may be. Preferable examples include an ion exchange resin tower, an ion exchange filter, a chelate resin tower, an activated carbon tower, and a catalyst tower with a clear lifetime. In addition to water treatment for removing impurities in water for the production of ultrapure water, it can also be applied to removal of impurities in liquid other than the production of pure water.
図１の通り、複数のイオン交換樹脂塔３が並列に設置されている。各イオン交換樹脂塔３へは、配管１及びバルブ２を介して被処理水が通水可能とされ、処理水がバルブ４及び配管５を介して流出可能とされている。各イオン交換樹脂塔３への通水量を流量計（図示略）で測定すると共に、各イオン交換樹脂塔３の処理水の水質を水質測定器６により測定する。水質測定器としては、導電率計、濁度計、残留塩素濃度計、ｐＨ計、比抵抗計などを用いることができるが、これらに限定されない。水処理器の種類に適した水質測定器が適宜選択される。
As shown in FIG. 1, a plurality of ion
複数のイオン交換樹脂塔３のうち一部（図１では、最も左側の１つの塔）Ａをパイロット用の塔Ａとし、他の塔Ｂよりやや過酷（この場合は高流速条件）で通水する。そして、イオン交換樹脂塔Ａの処理水の水質を連続的又は断続的に監視し、安定状態から悪化の兆候を把握する。なお、この間の塔Ａへの通水ＳＶは、塔Ｂへの通水ＳＶの１．０５〜１．３倍程度が好ましい。 A part of the plurality of ion exchange resin towers 3 (the leftmost tower in FIG. 1) A is used as a pilot tower A, and water is passed under a slightly severer condition (in this case, a high flow rate condition) than the other towers B. To do. And the quality of the treated water of the ion exchange resin tower A is monitored continuously or intermittently, and the sign of deterioration is grasped from the stable state. In addition, the water flow SV to the tower A during this period is preferably about 1.05 to 1.3 times the water SV to the tower B.
塔Ａへの通水ＳＶが塔Ｂよりも大きいので、塔Ａは塔Ｂよりも早期に破過（処理水質悪化）する。 Since the water flow SV to the tower A is larger than that of the tower B, the tower A breaks through earlier than the tower B (the quality of treated water deteriorates).
塔Ａにおける処理水の水質悪化の兆候を、塔Ｂの処理水の水質悪化に先んじて把握した後は、塔Ａ，Ｂの全体の能力をフルに（即ち、寿命ギリギリまで）利用するために、塔Ｂの残寿命を予測し、採水終了に至るまで、良水質の処理水が最大限得られるように流量調整する。即ち、塔Ａについて通水流量を減少させるか、あるいは通水を停止し、この塔Ａへの通水量の減少分（又は停止分）を他の塔Ｂへの通水量に上乗せする。各塔Ｂへの通水量は均等としてもよいが、塔Ｂのうちの一部の塔（塔Ｃ）の流量の上乗せ分を他より僅かに高くし、塔Ｃの処理水質の悪化兆候を監視して残りの塔Ｂの残寿命を予測してもよい（記号Ｃは図示略）。 After grasping the signs of deterioration in the quality of the treated water in Tower A prior to the deterioration in the quality of the treated water in Tower B, in order to make full use of the entire capacity of Towers A and B (ie, until the end of life) The remaining life of the tower B is predicted, and the flow rate is adjusted so that treated water of good quality is obtained to the maximum until the end of water sampling. That is, the water flow rate is reduced for the tower A, or the water flow is stopped, and the decrease (or stoppage) of the water flow to the tower A is added to the water flow to the other tower B. The amount of water flow to each tower B may be equal, but the additional flow rate of some of the towers B (tower C) is slightly higher than the others, monitoring for signs of deterioration in the treated water quality of tower C Thus, the remaining life of the remaining tower B may be predicted (the symbol C is not shown).
以上の方法により、通常の水処理システムに対して特段の測定機器や制御機器を追加設置することなく、目的とする処理水水質を維持しつつ、すべてのイオン交換樹脂塔について寿命ぎりぎりまで通水することができる。塔Ａ（又は塔Ｃ）で水質悪化兆候を察知した場合でも直ちには水処理装置全体の寿命には至らないので、水処理器の再生・更新を、準備を整えた上で無理なく行うことができる。 Through the above method, all ion-exchange resin towers can be passed to the end of their lifetime while maintaining the desired treated water quality without adding special measuring and control equipment to the normal water treatment system. can do. Even if a sign of deterioration in water quality is detected in Tower A (or Tower C), the life of the entire water treatment device will not be reached immediately. it can.
図１では、１つのイオン交換樹脂塔をパイロット用の塔Ａとしているが、多数の塔を並列設置したシステムにおいて、残寿命予測の精度をより高くするには、多少過酷な条件で通水するパイロット用の塔Ａを複数設け、標準条件に対する苛酷さ（高流速の程度）に差を付けてもよい。 In FIG. 1, one ion-exchange resin tower is used as a pilot tower A. In a system in which a large number of towers are installed in parallel, in order to increase the accuracy of the remaining life prediction, water is passed under somewhat severe conditions. A plurality of pilot towers A may be provided, and the severity of the standard conditions (the degree of high flow rate) may be differentiated.
本発明の一例をより詳しく述べる。 An example of the present invention will be described in more detail.
一般に、イオン交換樹脂等の水処理機能材の寿命は、流量（ＳＶ等）などの通水条件が適正な範囲であれば、負荷量すなわち除去される被処理水中の不純物濃度×積算通水流量でほぼ定まる。 In general, the lifetime of a water treatment functional material such as an ion exchange resin is the load amount, that is, the impurity concentration in the treated water to be removed × the integrated water flow rate if the water flow conditions such as the flow rate (SV, etc.) are in an appropriate range. Is almost fixed.
図１に示すように、イオン交換樹脂塔を１０塔並列設置した水処理装置において、通水開始当初は、１台の塔Ａに標準より１０％高流速で通水し、他の塔Ｂについては、残部を均等分割した流速で通水する。即ち、水処理装置への単位時間当り総通水量の１１％の通水速度で塔Ａに通水する。残り９台の塔Ｂについては、各々、単位時間当り総通水量の８９％を均等に分け合った通水速度（単位時間当りの水処理装置全体の総通水量の９．８９％ずつの通水速度）で通水する（８９÷９＝９．８９）。 As shown in FIG. 1, in a water treatment apparatus in which 10 ion exchange resin towers are installed in parallel, at the beginning of water flow, water is passed through one tower A at a flow rate 10% higher than the standard, and other towers B The water is passed at a flow rate where the remainder is divided equally. That is, water is passed through the tower A at a water flow rate of 11% of the total water flow rate per unit time to the water treatment apparatus. For the remaining nine towers B, each 89% of the total flow rate per unit time was equally shared (the flow rate was 9.89% of the total flow rate of the entire water treatment device per unit time). Speed)) (89 ÷ 9 = 9.89).
塔Ａの流出水の水質が悪化の兆候を示した時点までの通水時間が１００日であった場合、１００日目までの塔Ａへの積算通水量は、標準条件（総通水量の１０％を各塔に均等に通水する条件）の積算通水量よりも１０％多い。従って、塔３に該標準条件で通水された場合、処理水質が悪化し始めるまでの通水時間(寿命)は１１０日であると推定できる。
When the water flow time up to the point when the quality of the effluent water of Tower A shows signs of deterioration is 100 days, the cumulative water flow rate to Tower A up to the 100th day is the standard condition (10% of the total water flow rate). 10% more than the accumulated water flow rate (conditions for water flow equally to each tower). Therefore, when water is passed through the
そこで、１００日目以降は、１台の塔Ａとその他９台の塔Ｂで１０台分の総通水量を確保するように塔Ａの通水量を減少（又は停止）させ且つ塔Ｂの通水量を増加させるとともに、塔Ａ，Ｂのいずれにおいても積算負荷（通水開始〜採水終了の間の積算負荷）がそれぞれ標準条件通水の場合の１１０日分の負荷となるように各々への通水日数を設定する。 Therefore, after the 100th day, the flow rate of the tower A is reduced (or stopped) so that the total flow rate of 10 towers in the tower A and the other 9 towers B is secured, and the passage of the tower B While increasing the amount of water, in each of the towers A and B, the integrated load (the integrated load between the start of water flow to the end of water sampling) is set to the load for 110 days in the case of water under standard conditions. Set the number of days.
例えば、処理水の水質要求が厳しく、僅かな兆候以上の不純物も許容されない場合には、上記１台の塔Ａについてはこの段階(１００日目)で通水終了とする。その他９台の塔Ｂについては、標準条件１０台分の単位時間通水量を９等分した通水速度、具体的には、標準条件通水速度の１１.１％増の通水速度とする（１００％÷９＝１１．１％）。 For example, when the water quality requirement of the treated water is strict and impurities exceeding a few signs are not allowed, the flow of the one tower A is terminated at this stage (100th day). For the other nine towers B, the water flow rate obtained by dividing the unit-time water flow rate of 10 standard conditions by 9 equal parts, specifically, the water flow rate increased by 11.1% of the standard condition water flow rate. (100% ÷ 9 = 11.1%).
また、１００日時点での塔Ｂの積算負荷は、標準条件通水の場合に換算して９８．９日分であり、標準条件通水の場合で１１．１日分の残存容量がある。そこで、１１．１％増した通水速度で、この標準条件１１．１日分の積算負荷となるように、１００日目以降の通水日数を設定する。この場合は、あと１０日通水することにより、この積算負荷となる。従って、塔Ｂについては、１１０日目まで採水する。 Further, the accumulated load of the tower B at the time of 100 days is 98.9 days equivalent in the case of standard condition water flow, and there is a remaining capacity of 11.1 days in the case of standard condition water flow. Therefore, the number of days of water flow after the 100th day is set so that the accumulated load for 11.1 days of the standard condition is obtained at a water flow rate increased by 11.1%. In this case, the accumulated load is obtained by passing water for another 10 days. Therefore, water is collected from column B until the 110th day.
以上の要領で寿命予測と通水量制御を行うことにより、各塔Ａ，Ｂの寿命を最大限活用することができる。 By performing life prediction and water flow control in the above manner, the life of each tower A and B can be utilized to the maximum.
また、１台の塔Ａを２０％増し高流速通水、別の１台の塔Ａを１０％増し高流速通水、残り８台の塔Ｂを均等通水にするような運転としてもよい。 Alternatively, one tower A may be increased by 20% for high flow rate water flow, another tower A may be increased by 10% for high flow rate water flow, and the remaining 8 towers B may be evenly flowed. .
また、塔Ａを常に同一の塔とするのではなく、所定期間毎に交代させてもよい。例えば、３台の塔ａ，ｂ，ｃを並列設置した水処理装置において、標準通水速度をＫとした場合、一例では、塔ａ，ｂの通水速度を１．０Ｋとし、塔ｃを１．２Ｋとし、塔ｃが水質悪化の兆候を示したときには塔ａ，ｂの通水速度を１．１Ｋ、塔ｃの通水速度を０．８Ｋとし、各塔ａ，ｂ，ｃの寿命を使い尽す。別の一例では、塔ａ，ｂの通水速度を１．０Ｋ、塔ｃの通水速度を１．２Ｋとし、塔ｃが水質悪化の兆候を示したときには、塔ａの通水速度を１．０Ｋ、塔ｂの通水速度を１．２Ｋ、塔ｃの通水速度を０．８Ｋとし、塔ｂを塔ａよりも高負荷として塔ｂの処理水水質を監視するようにしてもよい。 Further, the tower A is not always the same tower, but may be changed every predetermined period. For example, in a water treatment apparatus in which three towers a, b, and c are installed in parallel, when the standard water flow rate is K, in one example, the water flow rate of towers a and b is 1.0 K, and tower c is When the tower c shows signs of deterioration in water quality, the water flow rate of the towers a and b is 1.1 K, the water flow speed of the tower c is 0.8 K, and the lifetime of each tower a, b and c Use up. In another example, when the flow rate of towers a and b is 1.0 K, the flow rate of tower c is 1.2 K, and tower c shows signs of water quality deterioration, the flow rate of tower a is 1 0.0K, the flow rate of the tower b is 1.2K, the flow rate of the tower c is 0.8K, and the treated water quality of the tower b may be monitored by setting the tower b at a higher load than the tower a. .
２，４ バルブ
３ イオン交換樹脂塔
2,4
本発明の要旨は次の通りである。
［１］ 並列設置された複数の同種かつ同処理容量の水処理器を有する水処理装置を運転する方法であって、各水処理器に同一の被処理水を通水して処理水を採水する水処理装置の運転方法において、一部の水処理器Ａへの通水を他の水処理器Ｂよりも高負荷とし、該水処理器Ａの処理水の水質悪化が生じた場合、それまでの水処理器Ａへの積算負荷から水処理器Ｂの寿命を予測し、この予測結果に基づいて、その後の各水処理器への通水量及び通水時間を制御する方法であり、水処理器Ａの処理水の水質が所定値にまで悪化した時点までの水処理器Ａへの積算負荷を寿命負荷とし、当該時点までの水処理器Ｂへの積算負荷と該寿命負荷との差（以下、負荷差という。）を求め、前記時点以降は水処理器Ａへの通水を停止し、水処理装置全体における単位時間当りの必要処理水量を水処理器Ｂの数で除算した単位時間当り通水量を各水処理器Ｂへの通水速度とし、この通水速度と、前記時点から採水終了までの通水時間との積から求まる負荷が前記負荷差となるように、該通水時間を設定することを特徴とする水処理装置の運転方法。
The gist of the present invention is as follows.
[1] A method of operating a water treatment apparatus having a plurality of water treatment devices of the same type and the same treatment capacity installed in parallel, and the treated water is collected by passing the same treated water through each water treatment device. In the operation method of the water treatment apparatus that performs water treatment, when water passing through some of the water treatment devices A has a higher load than other water treatment devices B, and the water quality of the treated water of the water treatment devices A deteriorates, It is a method of predicting the life of the water treatment device B from the accumulated load to the water treatment device A until then, and controlling the amount of water flow and the water passage time to each subsequent water treatment device based on the prediction result , The accumulated load on the water treatment device A up to the time when the quality of the treated water in the water treatment device A deteriorates to a predetermined value is defined as the life load, and the accumulated load on the water treatment device B up to that time and the life load A difference (hereinafter referred to as a load difference) is obtained, and after the time point, water flow to the water treatment device A is stopped, The water flow rate per unit time obtained by dividing the required amount of treated water per unit time by the number of water treatment devices B is defined as the water flow rate to each water treatment device B. A method for operating a water treatment apparatus, wherein the water passage time is set so that a load obtained from a product of the water passage time is the load difference .
［３］ ［１］又は［２］において、前記水処理器は、容器にイオン交換樹脂、活性炭、イオン交換フィルター、キレート樹脂又は触媒を充填したものであることを特徴とする水処理装置の運転方法。 [3] [1] or Oite in [2], wherein the water treatment device is an ion exchange resin in a container, activated carbon, ion exchange filter, the water treatment apparatus, characterized in that is obtained by filling a chelate resin or catalyst Driving method.
Claims (5)
各水処理器に同一の被処理水を通水して処理水を採水する水処理装置の運転方法において、
一部の水処理器Ａへの通水を他の水処理器Ｂよりも高負荷とし、
該水処理器Ａの処理水の水質悪化が生じた場合、それまでの水処理器Ａへの積算負荷から水処理器Ｂの寿命を予測し、この予測結果に基づいて、その後の各水処理器への通水量及び通水時間を制御することを特徴とする水処理装置の運転方法。 A method of operating a water treatment device having a plurality of water treatment devices of the same kind and the same treatment capacity installed in parallel,
In the operation method of a water treatment apparatus that collects treated water by passing the same treated water through each water treatment device,
Make water flow to some water treatment devices A higher than other water treatment devices B,
When the water quality of the treated water of the water treatment device A deteriorates, the life of the water treatment device B is predicted from the accumulated load on the water treatment device A so far, and each subsequent water treatment is performed based on the prediction result. A method for operating a water treatment apparatus, characterized by controlling a water flow amount and a water flow time to a vessel.
水処理器Ａの処理水の水質が所定値にまで悪化した時点までの水処理器Ａへの積算負荷を寿命負荷とし、
当該時点までの水処理器Ｂへの積算負荷と該寿命負荷との差（以下、負荷差という。）を求め、
当該時点から採水終了までの間に水処理器Ｂに加えられる負荷が該負荷差となるように、該時点以降の水処理器Ｂへの通水速度と通水時間を設定することを特徴とする水処理装置の運転方法。 In claim 1 or 2,
The accumulated load on the water treatment device A up to the point when the quality of the treated water of the water treatment device A deteriorates to a predetermined value is defined as the life load,
The difference between the accumulated load on the water treatment device B up to the time and the life load (hereinafter referred to as load difference) is obtained,
The water flow rate and the water flow time to the water treatment device B after the time point are set so that the load applied to the water treatment device B between the time point and the end of water sampling becomes the load difference. The operation method of the water treatment equipment.
この通水速度と、前記時点から採水終了までの通水時間との積から求まる負荷が前記負荷差となるように、該通水時間を設定することを特徴とする水処理装置の運転方法。 In any one of Claims 1 thru | or 3, after the said time, the water flow to the water treatment device A was stopped, and the required amount of treated water per unit time in the whole water treatment device was divided by the number of the water treatment devices B. The water flow rate per unit time is the water flow rate to each water treatment device B,
A method for operating a water treatment apparatus, wherein the water passage time is set so that a load obtained from the product of the water passage speed and the water passage time from the time point to the end of sampling is the load difference. .
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