JP3299093B2 - Pure water production method and pure water production equipment - Google Patents
Pure water production method and pure water production equipmentInfo
- Publication number
- JP3299093B2 JP3299093B2 JP27836695A JP27836695A JP3299093B2 JP 3299093 B2 JP3299093 B2 JP 3299093B2 JP 27836695 A JP27836695 A JP 27836695A JP 27836695 A JP27836695 A JP 27836695A JP 3299093 B2 JP3299093 B2 JP 3299093B2
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- treated water
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- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Physical Water Treatments (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、純水の製造方法及
びその実施装置に関し、更に詳細には、医薬・製薬用の
純水を得るのに最適な、生菌等の微生物の発生を防止す
るように改良された純水の製造方法及びその方法を実施
する純水製造装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing pure water and an apparatus for implementing the method, and more particularly, to preventing the generation of microorganisms such as viable bacteria which are optimal for obtaining pure water for medicines and pharmaceuticals. The present invention relates to a method for producing pure water improved in such a manner as described above, and a pure water producing apparatus for implementing the method.
【０００２】[0002]
【従来の技術】医薬・製薬用の純水を製造するのに用い
られる純水製造装置の構成は、一般に、導入する原水の
水質及び製造する純水の要求水質によって異なってい
る。例えば、井戸水を原水として精製水を得る場合に
は、純水製造装置は、井戸水を導入して凝集濾過する工
程又は凝集沈殿する工程の前処理工程、それに続く脱塩
及び殺菌工程を実施する水処理装置から構成されてい
る。また、減菌精製水を得る場合には、脱塩及び殺菌工
程の後に更に膜処理工程を実施する水処理装置を有し、
また注射用水を得る場合には、膜処理工程の後に続いて
蒸留工程を実施する水処理装置を有する。水道水等の浄
水を原水とする場合には、前処理工程を経ることなく、
脱塩及び殺菌工程に直接導入されるので、純水製造装置
は、前処理工程に必要な水処理装置を必要としない。2. Description of the Related Art The structure of a pure water producing apparatus used for producing pure water for medicines and pharmaceuticals generally differs depending on the quality of raw water to be introduced and the required quality of pure water to be produced. For example, in the case of obtaining purified water using well water as raw water, the pure water production apparatus performs a pretreatment step of a step of introducing well water and performing a coagulation filtration step or a coagulation precipitation step, followed by a desalination and sterilization step. It is composed of a processing device. In addition, when obtaining sterilized purified water, having a water treatment device that further performs a membrane treatment step after the desalination and sterilization steps,
In addition, when water for injection is obtained, a water treatment device for performing a distillation step following the membrane treatment step is provided. When using purified water such as tap water as raw water, without going through the pretreatment process,
Since it is introduced directly into the desalination and sterilization process, the pure water production device does not require a water treatment device required for the pretreatment process.
【０００３】ところで、上述の各工程に設けられている
水処理装置、例えば脱塩及び殺菌工程に設けられている
イオン交換塔、逆浸透膜装置等の脱塩装置は、装置に充
填されているイオン交換樹脂等の充填剤の活性を再生さ
せるために、或いは装置の点検及び保守を行うために、
複数系列の脱塩装置で構成されていることが多い。運転
に際しては、少なくとも一の系列の水処理装置を待機さ
せ、待機中に充填剤の再生操作、装置の点検作業或いは
保守作業を行い、一方、待機させた系列以外の水処理装
置を通水運転する方式で複数系列の水処理装置を交互に
切り換えて運転し、処理水を得ている。[0003] The water treatment apparatus provided in each of the above-described steps, for example, a desalination apparatus such as an ion exchange tower and a reverse osmosis membrane apparatus provided in the desalination and sterilization steps is filled in the apparatus. In order to regenerate the activity of the filler such as ion exchange resin, or to perform inspection and maintenance of the equipment,
It often consists of a plurality of desalination units. At the time of operation, at least one line of water treatment equipment is put on standby, and during the standby, filler regeneration operation, equipment inspection work or maintenance work is performed, and on the other hand, water treatment equipment other than the standbyd water treatment equipment is passed through In this method, a plurality of systems of water treatment devices are alternately switched and operated to obtain treated water.
【０００４】例として、減菌精製水を製造する純水製造
装置の脱塩及び殺菌工程を実施する水処理装置を挙げ、
以下に、図３を参照しつつその構成を説明する。本脱塩
装置及び殺菌装置１０は、図３に示すように、並列に設
けられた２基の同じイオン交換塔１２Ａ、Ｂと、各イオ
ン交換塔１２Ａ、Ｂにそれぞれ被処理水を送水する送水
ポンプ１４Ａ、Ｂと、イオン交換塔１２の下流に設けら
れた１個のレジンキャッチャ１６と、１個の紫外線殺菌
器１８と、処理水を貯留し、次の膜処理工程に送るため
の処理水タンク２０と、それらの機器を接続する配管及
び必要な計器とから構成されている。図３中、２２は、
前処理工程で得た濾過水を貯留する被処理水タンクで、
脱塩及び殺菌工程では被処理水タンク２２に貯留された
濾過水が被処理水となる。[0004] As an example, a water treatment apparatus for performing a desalination and sterilization step of a pure water production apparatus for producing sterilized purified water is given.
Hereinafter, the configuration will be described with reference to FIG. As shown in FIG. 3, the desalination apparatus and the sterilization apparatus 10 include two identical ion exchange towers 12A and B provided in parallel, and a water supply system for supplying treated water to each of the ion exchange towers 12A and 12B. Pumps 14A and B, one resin catcher 16 provided downstream of ion exchange tower 12, one ultraviolet sterilizer 18, and treated water for storing treated water and sending it to the next membrane treatment step It is composed of a tank 20, piping for connecting those devices, and necessary instruments. In FIG. 3, 22 is
A treated water tank that stores the filtered water obtained in the pretreatment step,
In the desalination and sterilization process, the filtered water stored in the water tank 22 becomes the water to be treated.
【０００５】イオン交換塔１２Ａ、Ｂは、再生式混床型
イオン交換塔であって、一方のイオン交換塔、例えばイ
オン交換塔１２Ａを通水、運転する間に、他方のイオン
交換塔１２Ｂのイオン交換樹脂の再生操作及びその他の
必要な点検、保守作業を行い、終了した後は、運転開始
に備えて満水状態で通水することなく待機させている。
イオン交換塔１２Ａのイオン交換樹脂の活性が低下し、
再生操作が必要となった時点で、イオン交換塔１２Ｂの
通水運転を開始し、今まで運転していたイオン交換塔１
２Ａの運転を停止して、再生操作を行う。[0005] The ion exchange towers 12A and 12B are regenerative mixed bed type ion exchange towers, and while one of the ion exchange towers, for example, the ion exchange tower 12A is passed through and operated, the other ion exchange tower 12B is operated. After performing the operation of regenerating the ion-exchange resin and other necessary inspections and maintenance work, after the operation is completed, the apparatus is kept in a full state without passing water in preparation for the start of operation.
The activity of the ion exchange resin in the ion exchange tower 12A decreases,
At the time when the regeneration operation is required, the water exchange operation of the ion exchange tower 12B is started, and the ion exchange tower 1
The operation of 2A is stopped, and the regeneration operation is performed.
【０００６】[0006]
【発明が解決しようとする課題】ところで、イオン交換
塔を２基並列に設け、一方のイオン交換塔を運転し、他
方のイオン交換塔を待機させている上述の脱塩装置を備
えた従来の純水製造装置では、次の二つの理由から脱塩
装置の処理水中の微生物の含有率が高いと言う問題があ
った。ここで、微生物とは、生菌、細菌等を含む広い概
念を言う。第１の理由として挙げられるのは、運転中の
イオン交換塔の通水中断に因る理由である。従来の純水
の製造方法では、処理水を貯留する処理水タンクが満杯
になった時点で、運転中のイオン交換塔の運転を中断
し、処理水タンクの水位の低下を待って再び運転を再開
する運転方式を取っている。そのために、運転中断の期
間中、イオン交換塔及びその周りの配管、機器に被処理
水が停滞する結果、停滞した水中で、特にイオン交換塔
内のイオン交換樹脂層内で微生物が繁殖するからであ
る。第２に理由として挙げられるのは、待機中のイオン
交換塔に起因する理由である。待機状態のイオン交換塔
は、通常、少なくとも２０〜２２時間程度待機する。そ
の間、水がイオン交換塔内及び配管内に停滞するため
に、特にイオン交換塔内のイオン交換樹脂層内で微生物
が繁殖するからである。By the way, two ion exchange towers are provided in parallel, one of the ion exchange towers is operated, and the other is equipped with the above-mentioned desalination apparatus in a standby state. The pure water production apparatus has a problem that the content of microorganisms in the treated water of the desalination apparatus is high for the following two reasons. Here, the term “microorganism” refers to a broad concept including live bacteria, bacteria, and the like. The first reason is that the water flow in the ion exchange tower during operation is interrupted. In the conventional method for producing pure water, when the treated water tank for storing treated water is full, the operation of the ion exchange tower during operation is interrupted, and operation is resumed after the water level in the treated water tank has dropped. It has a driving system to restart. Because of this, during the period of operation interruption, the water to be treated stagnates in the ion exchange tower and the surrounding piping and equipment, and as a result, microorganisms propagate in the stagnant water, especially in the ion exchange resin layer in the ion exchange tower. It is. The second reason is that the ion exchange tower is on standby. The ion exchange tower in the standby state usually waits for at least about 20 to 22 hours. During that time, the water stagnates in the ion exchange tower and the piping, so that microorganisms propagate in the ion exchange resin layer in the ion exchange tower in particular.
【０００７】以上の理由から、従来の純水製造装置で
は、脱塩及び殺菌工程で得た処理水中の微生物濃度が高
くなる。そのままでは、医療用又は薬剤の溶剤用として
使用される減菌精製水中の微生物の濃度が高くなるの
で、それを防ぐために脱塩及び殺菌工程に続く膜処理工
程での処理が複雑になると言う問題があった。また、今
後、一層安全な高度医療を確立するためには、処理水中
に混入する微生物の量を大幅に低下させる必要があり、
この点からも純水製造装置において微生物の繁殖を防止
することが望まれている。[0007] For the above reasons, in the conventional pure water production apparatus, the concentration of microorganisms in the treated water obtained in the desalination and sterilization steps becomes high. As it is, the concentration of microorganisms in the sterilized purified water used for medical or pharmaceutical solvents becomes high, so that the treatment in the membrane treatment process following the desalination and sterilization process is complicated to prevent it. was there. In addition, in order to establish safer advanced medical care in the future, it is necessary to significantly reduce the amount of microorganisms mixed in the treated water,
From this point as well, it is desired to prevent the growth of microorganisms in the pure water production apparatus.
【０００８】上述の例では、並列に設置した２系列の再
生式イオン交換塔を脱塩装置として有する純水製造装置
を例にして説明したが、１系列の脱塩装置を有する純水
製造装置の場合でも微生物繁殖の問題は上述の場合と同
じである。例えば、逆浸透膜装置と、それと直列に接続
した電気再生式イオン交換装置とから構成された脱塩装
置を有する純水製造装置を例に挙げ、図４を参照しつつ
問題を説明する。図４に示す脱塩及び殺菌装置７０は、
逆浸透膜装置７２と、逆浸透膜装置７２と直列に接続さ
れた電気再生式イオン交換装置７４とからなる一系列の
脱塩装置と、殺菌装置として設けられた紫外線殺菌器７
６と、処理水を一時的に貯留する処理水タンク７８と、
被処理水タンク８０から逆浸透膜装置７２に送水する送
水ポンプ８２及びそれらの機器を接続する配管並びに必
要な計器とを備えている。尚、図４において符号１０４
は逆浸透膜装置７２に接続された透過水流出管、１０６
は濃縮水流出管である。In the above example, a pure water production apparatus having two regenerative ion exchange columns installed in parallel as a desalination apparatus has been described as an example, but a pure water production apparatus having one series of desalination apparatuses has been described. In this case, the problem of microbial propagation is the same as in the case described above. For example, a problem will be described with reference to FIG. 4 using a pure water production apparatus having a desalination apparatus composed of a reverse osmosis membrane apparatus and an electric regeneration type ion exchange apparatus connected in series with the reverse osmosis membrane apparatus. The desalination and sterilization device 70 shown in FIG.
A series of desalination devices including a reverse osmosis membrane device 72 and an electric regeneration type ion exchange device 74 connected in series with the reverse osmosis membrane device 72, and an ultraviolet sterilizer 7 provided as a sterilizer.
6, a treated water tank 78 for temporarily storing treated water,
A water supply pump 82 for supplying water from the water tank 80 to the reverse osmosis membrane device 72, a pipe connecting these devices, and necessary instruments are provided. Incidentally, in FIG.
Is a permeate outlet pipe connected to the reverse osmosis membrane device 72, 106
Is a concentrated water outlet pipe.
【０００９】電気再生式イオン交換装置７４は、薬剤に
よる再生が不要な、即ち再生サイクルを必要としないイ
オン交換装置であって、常時、原水を送水してイオン交
換樹脂により原水中の脱イオン作用を連続的に行うこと
ができる。更に説明すると、電気再生式イオン交換装置
では、カチオン交換膜とアニオン交換膜とで形成された
間隙にイオン交換体として、例えばアニオン交換樹脂と
カチオン交換樹脂の混合イオン交換樹脂を充填した脱塩
室が形成されている。運転に際しては、イオン交換樹脂
を充填した脱塩室に被処理水を通過させつつ、被処理水
の流れに対して直角方向に直流電圧を上述のイオン交換
膜を介して印加させ、両イオン交換膜の外側を流れてい
る濃縮水に被処理水中のイオンを電気的に移行させなが
ら脱イオン水を製造する。尚、図４の電気再生式イオン
交換装置７４中、中央の水流は被処理水の流れ、その両
側の水流は濃縮水の流れ及びその外側の水流は電極水流
を指している。The electric regeneration type ion exchange device 74 is an ion exchange device which does not require regeneration by a chemical, that is, does not require a regeneration cycle, and always feeds raw water and deionizes the raw water with an ion exchange resin. Can be performed continuously. More specifically, in the electric regenerative ion exchange apparatus, a desalination chamber in which a gap formed by a cation exchange membrane and an anion exchange membrane is filled with an ion exchanger, for example, a mixed ion exchange resin of an anion exchange resin and a cation exchange resin. Are formed. During operation, while passing the water to be treated through the desalting chamber filled with the ion exchange resin, a DC voltage is applied through the above-mentioned ion exchange membrane in a direction perpendicular to the flow of the water to be treated, and both ion exchanges are performed. Deionized water is produced while electrically transferring ions in the water to be treated to the concentrated water flowing outside the membrane. In the electric regenerative ion exchange device 74 of FIG. 4, the central water flow indicates the flow of the water to be treated, the water flows on both sides thereof indicate the flow of the concentrated water, and the water flows on the outside thereof indicate the electrode water flow.
【００１０】被処理水は、脱塩及び殺菌工程の前に前処
理として凝集濾過又は凝集沈殿工程を経て被処理水タン
ク８０に送入される。被処理水タンク８０に貯留された
被処理水は、送水ポンプ８２により送水され、逆浸透膜
装置７２、電気再生式イオン交換装置７４、続いて紫外
線殺菌器７６を経て処理水として処理水タンク８２に流
出する。従来の純水の製造方法では、処理水タンク８２
内の処理水が満杯になった時点で、本脱塩装置７０の運
転が中断され、処理水タンク８２の水位の低下を待って
再び運転が再開される。その間、逆浸透膜装置、電気再
生式イオン交換装置及びその周りの配管に被処理水が停
滞するために、特に電気再生式イオン交換装置のイオン
交換樹脂層内で微生物が繁殖する。The water to be treated is fed into the water tank 80 through a coagulation filtration or coagulation sedimentation step as a pretreatment before the desalination and sterilization steps. The to-be-treated water stored in the to-be-treated water tank 80 is sent by a water supply pump 82, and is passed through a reverse osmosis membrane device 72, an electric regeneration type ion exchange device 74, and then an ultraviolet sterilizer 76 as treated water tank 82 as treated water. Leaked to In the conventional method for producing pure water, the treated water tank 82
When the treated water in the inside becomes full, the operation of the present desalination apparatus 70 is interrupted, and the operation is restarted again after the water level of the treated water tank 82 decreases. During that time, the water to be treated stagnates in the reverse osmosis membrane device, the electric regeneration type ion exchange device, and the piping around it, so that microorganisms propagate especially in the ion exchange resin layer of the electric regeneration type ion exchange device.
【００１１】上述の説明では、脱塩及び殺菌工程を例に
挙げて微生物の繁殖を説明したが、純水製造方法にあっ
て微生物の繁殖は脱塩及び殺菌工程に限られる問題では
ない。例えば、減菌精製水を製造する場合には、脱塩及
び殺菌工程の後で、次の膜処理工程を実施する精密濾過
膜装置、限外濾過膜装置等の水処理装置でも、微生物の
繁殖は問題になり、特に純水製造工程中の後段の工程に
なるにつれて益々重要な問題になる。In the above description, the propagation of microorganisms has been described by taking the desalination and sterilization steps as examples. However, in the pure water production method, the propagation of microorganisms is not limited to the desalination and sterilization steps. For example, in the case of producing sterilized purified water, microorganisms can be propagated in a water treatment device such as a microfiltration membrane device or an ultrafiltration membrane device that performs the next membrane treatment process after the desalting and sterilization processes. Becomes a problem, especially as it becomes a later stage in the pure water production process.
【００１２】そこで、本発明の目的は、微生物の繁殖を
抑制するようにした純水の製造方法及びその方法を実施
する純水製造装置を提供することである。Accordingly, an object of the present invention is to provide a method for producing pure water, which suppresses the growth of microorganisms, and an apparatus for producing pure water, which implements the method.
【００１３】[0013]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る第１の純水の製造方法は、並列に設け
られた複数系列の水処理装置のうち、少なくとも一の系
列の水処理装置を待機させ、待機させた系列以外の水処
理装置に被処理水を導入して通水運転する方式で、複数
系列の水処理装置を交互に切り換えて運転して処理水を
得る純水の製造方法において、運転状態の系列の水処理
装置から外部への処理水の送出を中断する時には、その
中断期間中、水処理装置から流出した処理水を殺菌処理
し、次いで処理水の送出を中断した系列の水処理装置の
被処理水入口に処理水を導入して、水処理装置内で処理
水を循環させるようにしたこと特徴としている。In order to achieve the above object, a first method for producing pure water according to the present invention is directed to at least one of a plurality of water treatment apparatuses provided in parallel. A method in which the water treatment apparatus is made to stand by, and the water to be treated is introduced into the water treatment apparatuses other than the series in which the water treatment is made to stand by, and a plurality of series of water treatment apparatuses are alternately operated to obtain treated water. In the method for producing water, when the supply of treated water to the outside from the water treatment device in the operating state is interrupted, the treated water flowing out of the water treatment device is sterilized during the interruption period, and then the treated water is delivered. The process water is introduced into the inlet of the water to be treated of the water treatment device of the series in which the treatment is interrupted, and the treated water is circulated in the water treatment device.
【００１４】本方法の場合、循環する処理水の流量は、
水処理装置内に水が停滞しない限り任意であるが、好適
には、通水時に導入する被処理水の流量と同じである。
被処理水の通水を中断する理由は、何でも良く、例えば
処理水タンクが満杯になった場合等がある。通水中断し
た各系列の水処理装置内を処理水が循環することによ
り、被処理水の通水中断中でも水が水処理装置内で停滞
しなくなるので、微生物の繁殖が抑制されるとともに、
循環する処理水を循環経路内で殺菌処理することによ
り、水処理装置内での微生物の繁殖をより確実に防止す
ることができる。殺菌処理は、例えば紫外線殺菌器に処
理水を通水することにより施すことができる。よって、
従来の純水製造方法に比べて、処理水の微生物濃度を低
下させることができる。In the case of this method, the flow rate of the circulating treated water is
The flow rate is arbitrary as long as the water does not stagnate in the water treatment device, but is preferably the same as the flow rate of the water to be treated introduced at the time of passing water.
The reason why the passage of the water to be treated is interrupted may be anything, for example, when the treated water tank is full. By circulating the treated water in the water treatment equipment of each line where the water supply was interrupted, the water does not stagnate in the water treatment equipment even during the interruption of the water supply of the to-be-treated water, so that the propagation of microorganisms is suppressed,
By sterilizing the circulating treated water in the circulation path, propagation of microorganisms in the water treatment device can be more reliably prevented. Sterilization treatment can be performed, for example, by passing treated water through an ultraviolet sterilizer. Therefore,
The microorganism concentration of the treated water can be reduced as compared with the conventional pure water production method.
【００１５】第１の純水の製造方法では、運転状態の系
列の水処理装置から外部への処理水の送出を中断する場
合を規定し、水処理装置から外部に処理水を送出してい
る通常の運転状態の場合については規定していない。そ
こで、本発明に係る第２の純水の製造方法は、更に、運
転状態の系列の水処理装置から外部へ処理水を送出して
いる時には、運転状態の系列の水処理装置から流出した
処理水の一部を殺菌処理し、次いで殺菌処理した処理水
を運転状態の系列の水処理装置の被処理水入口に被処理
水と共に導入して、水処理装置内で処理水を循環させ、
一方、残余の処理水を外部に送出するようにしたことを
特徴としている。第２の純水の製造方法によれば、常
時、処理水が循環ラインを介して循環し、しかもその循
環水が殺菌されるので、第１の純水の製造方法を単独で
行うよりも、更に処理水の微生物濃度を低下させること
ができる。尚、本方法の場合、循環する処理水の流量
は、処理水の送出を中断している時には、水処理装置か
ら流出する処理水の全流量であり、処理水を送出してい
る時には、水処理装置から流出する処理水の流量の一部
であって、循環ライン中で水が停滞しない程度の流量、
即ち微生物が繁殖しない程度の流量であれば、その流量
は任意である。In the first method for producing pure water, the case where the supply of treated water to the outside from the water treatment apparatus in the operating state is interrupted is specified, and the treated water is supplied to the outside from the water treatment apparatus. There is no stipulation for normal operating conditions. Therefore, the second method for producing pure water according to the present invention further comprises the step of treating treated water flowing out of the operating state series water treatment apparatus when the treated water is being sent from the operating state series water treatment apparatus to the outside. A portion of the water is sterilized, and then the sterilized treated water is introduced together with the treated water into the treated water inlet of the water treatment device in the operating state, and the treated water is circulated in the water treatment device.
On the other hand, it is characterized in that the remaining treated water is sent to the outside. According to the second method for producing pure water, the treated water is always circulated through the circulation line, and the circulating water is sterilized. Further, the microorganism concentration of the treated water can be reduced. In the case of the present method, the flow rate of the circulating treated water is the total flow rate of the treated water flowing out of the water treatment device when the supply of the treated water is interrupted. A part of the flow rate of the treated water flowing out of the treatment device, the flow rate of which the water does not stagnate in the circulation line,
That is, the flow rate is arbitrary as long as the flow rate is such that the microorganisms do not propagate.
【００１６】更には、本発明に係る第３の純水の製造方
法は、待機状態の各系列の水処理装置内に水を通水して
処理水出口から流出させ、次いで流出した水を殺菌処理
して、再び被処理水入口に導入するようにして水を循環
することを特徴としている。本方法の場合、循環する水
の流量は、水処理装置内に水が停滞しない限り任意であ
るが、好適には、運転時に導入する被処理水の流量と同
じである。待機中の各系列の水処理装置内を水が循環す
ることにより、待機中の水処理装置内で水が停滞しなく
なるので、微生物の繁殖が抑制されるとともに、循環す
る水を循環経路内で殺菌処理することにより、待機中の
水処理装置内で微生物が繁殖するのをより確実に防止す
ることができる。よって、処理水の微生物濃度を低下さ
せることができる。Further, in the third method for producing pure water according to the present invention, the water is passed through the water treatment apparatus of each series in a standby state to flow out from the treated water outlet, and then the discharged water is sterilized. It is characterized in that water is circulated by treating it and introducing it again into the inlet of the water to be treated. In the case of the present method, the flow rate of the circulating water is arbitrary as long as the water does not stagnate in the water treatment apparatus, but is preferably the same as the flow rate of the water to be treated introduced during operation. By circulating water in the water treatment devices of each standby system, the water does not stagnate in the standby water treatment devices, so that the growth of microorganisms is suppressed and the circulating water is circulated in the circulation path. By performing the sterilization treatment, it is possible to more reliably prevent the growth of microorganisms in the water treatment apparatus in a standby state. Therefore, the microorganism concentration of the treated water can be reduced.
【００１７】第１の純水の製造方法又は第２の純水の製
造方法と第３の純水の製造方法を併用することもでき
る。これにより、処理水の微生物濃度を更に一層低下さ
せることができる。The first pure water producing method or the second pure water producing method and the third pure water producing method can be used in combination. Thereby, the microorganism concentration of the treated water can be further reduced.
【００１８】上述の第１、第２及び第３の純水の製造方
法を実施するのに好適な本発明に係る純水製造装置は、
並列に設けられた複数系列の水処理装置と、各系列の水
処理装置の被処理水入口に被処理水をそれぞれ給水する
被処理水給水手段と、各系列の水処理装置の処理水出口
からそれぞれ流出する処理水を集水する処理水集水手段
とを備え、少なくとも一の系列の水処理装置を待機さ
せ、待機させた系列以外の水処理装置に被処理水を導入
して通水運転する方式で、複数系列の水処理装置を交互
に切り換えて運転し、処理水を得る純水製造装置におい
て、処理水集水手段から被処理水給水手段を介して又は
介することなく各系列の水処理装置の被処理水入口に水
を戻し、水処理装置内を通水して各系列の水処理装置の
処理水出口から流出させ、次いで流出した水を殺菌処理
し、処理水集水手段を経て再び被処理水入口に導入する
循環経路で水を循環する循環手段を設けたことを特徴と
している。The pure water producing apparatus according to the present invention, which is suitable for carrying out the above-described first, second and third pure water producing methods, comprises:
A plurality of series of water treatment apparatuses provided in parallel, treated water supply means for supplying treated water to the treated water inlet of each series of water treatment apparatuses, and a treated water outlet of each series of water treatment apparatuses. A treated water collecting means for collecting the treated water flowing out, at least one of the series of water treatment apparatuses is put on standby, and the water to be treated is introduced into the water treatment apparatus of a series other than the standby series to pass water. In a pure water producing apparatus that obtains treated water by alternately switching and operating a plurality of series of water treatment apparatuses, a system for treating each series of water from the treated water collecting means via or without the treated water supply means. The water is returned to the treated water inlet of the treatment device, passed through the water treatment device, flows out of the treated water outlet of each series of water treatment devices, and then the discharged water is sterilized. Circulates water through the circulation path that is introduced again to the inlet of treated water It is characterized in that a circulating means that.
【００１９】本発明で言う被処理水給水手段とは、各系
列の水処理装置の被処理水入口に被処理水を給水する手
段であって、被処理水を貯留する被処理水タンク又は被
処理水タンクから各系列の水処理装置の被処理水入口ま
での配管を意味する。また、処理水集水手段とは、各系
列の水処理装置から流出する処理水を集水する手段であ
って、各系列の水処理装置から処理水を集水する共通の
処理水出口配管又は処理水出口配管に接続され、処理水
を貯留する処理水タンクを言う。循環手段は、通常、水
を殺菌処理する殺菌器、配管及び必要な開閉弁とから構
成され、必要に応じて水を循環するポンプ、冷却器等の
機器を備えている。本発明で循環させる水は、運転中の
水処理装置については処理水であり、待機中の水処理装
置については通常は待機中の水処理装置内に滞留する水
又は運転状態にある系列の水処理装置の処理水である
が、場合によっては原水、濾過水等の水を外部から循環
に必要な量だけ供給してもよい。The treated water supply means referred to in the present invention is a means for supplying treated water to a treated water inlet of each series of water treatment apparatuses, and includes a treated water tank or a treated water tank for storing the treated water. It means the piping from the treated water tank to the treated water inlet of each series of water treatment equipment. Further, the treated water collecting means is a means for collecting treated water flowing out of each series of water treatment devices, and a common treated water outlet pipe for collecting treated water from each series of water treatment devices or A treated water tank that is connected to the treated water outlet pipe and stores treated water. The circulating means is usually composed of a sterilizer for sterilizing water, piping and necessary open / close valves, and includes equipment such as a pump and a cooler for circulating water as required. The water circulated in the present invention is treated water for an operating water treatment apparatus, and water that normally stays in a standby water treatment apparatus or a series of water that is in an operation state for a standby water treatment apparatus. Although it is the treated water of the treatment device, in some cases, water such as raw water or filtered water may be supplied from the outside in an amount required for circulation.
【００２０】水処理装置の種類は、特に限定は無く、例
えば膜処理工程で使用される精密濾過膜装置、限外濾過
膜装置等も含むが、最も実際的には脱塩工程で使用され
る水処理装置であって、各系列の水処理装置が、薬剤再
生式イオン交換装置、非再生式イオン交換装置及び逆浸
透膜装置のうちのいずれか一つを脱塩装置として備えて
いる。脱塩工程の場合、通常、脱塩工程に続いて殺菌
器、例えば紫外線殺菌器を備えており、処理水を殺菌す
るように構成されている。このような場合、その殺菌器
と循環手段に設ける殺菌器とを共通にすることができ、
循環手段に新たに殺菌器を設ける必要はない。The type of water treatment apparatus is not particularly limited, and includes, for example, a microfiltration membrane apparatus and an ultrafiltration membrane apparatus used in the membrane treatment step, but most practically used in the desalination step. In the water treatment apparatus, each series of water treatment apparatuses includes any one of a chemical regeneration type ion exchange apparatus, a non-regeneration type ion exchange apparatus, and a reverse osmosis membrane apparatus as a desalination apparatus. In the case of the desalination step, a sterilizer, for example, an ultraviolet sterilizer is usually provided following the desalination step, and is configured to sterilize the treated water. In such a case, the sterilizer and the sterilizer provided in the circulation means can be shared,
It is not necessary to provide a new sterilizer in the circulation means.
【００２１】薬剤再生式イオン交換装置とは、例えば混
床式イオン交換装置、２床３塔式イオン交換装置を言
う。非再生式イオン交換装置とは、主として混床式イオ
ン交換塔として使用する所謂カートリッジ式イオン交換
塔を意味し、イオン交換樹脂のイオン交換能が低下した
時には、イオン交換塔ごと新しいものに交換するか、或
いはイオン交換塔のイオン交換樹脂のみを外部で予め再
生された再生済イオン交換樹脂と交換して使用する方式
のイオン交換塔である。The chemical regeneration type ion exchange device is, for example, a mixed bed type ion exchange device, a two bed, three column type ion exchange device. The non-regenerative ion exchange device means a so-called cartridge type ion exchange column mainly used as a mixed bed type ion exchange column. When the ion exchange capacity of the ion exchange resin is reduced, the ion exchange column is replaced with a new one. Alternatively, an ion exchange column of a type in which only the ion exchange resin of the ion exchange column is replaced with a regenerated ion exchange resin which has been regenerated outside in advance.
【００２２】また、各系列の水処理装置が薬剤再生式イ
オン交換装置、非再生式イオン交換装置及び逆浸透膜装
置のうち相互に同じ種類又は相互に異なる種類の装置を
少なくとも２基直列に接続してなる脱塩装置を備えてい
ても良い。例えば、多段直列接続の薬剤再生式イオン交
換装置、多段直列接続の逆浸透膜装置、逆浸透膜装置と
それに直列に接続された薬剤再生式イオン交換装置又は
非再生式イオン交換装置との組合せ等で各系列の水処理
装置を構成しても良い。In addition, each of the series of water treatment devices is connected in series with at least two devices of the same type or different types among the regenerative ion exchange device, the non-regenerative ion exchange device, and the reverse osmosis membrane device. May be provided. For example, a multistage serially connected drug regenerative ion exchange device, a multistage serially connected reverse osmosis membrane device, a combination of a reverse osmosis membrane device and a drug regenerative ion exchange device or a non-regenerative ion exchange device connected in series with the reverse osmosis membrane device, etc. The water treatment apparatus of each system may be configured by the above.
【００２３】実際的には、各系列の水処理装置の構成は
系列間で相互にそれぞれ同じあって、例えば各系列の水
処理装置が逆浸透膜装置とそれに直列に接続された非再
生式式イオン交換装置との組合せで構成されている。し
かし、本発明では、各系列の水処理装置の構成が必ずし
も同じ構成である必要はなく、一の系列の水処理装置が
逆浸透膜装置と再生式イオン交換塔との組み合わせで、
一の系列以外の系列の水処理装置が逆浸透膜装置と非再
生式イオン交換塔との組合せでも良い。In practice, the configuration of each series of water treatment apparatuses is the same between the series. For example, each series of water treatment apparatuses is connected to a reverse osmosis membrane apparatus and a non-regenerative type water treatment apparatus connected in series to the reverse osmosis membrane apparatus. It is configured in combination with an ion exchange device. However, in the present invention, the configuration of each series of water treatment devices does not necessarily have to be the same configuration, and one series of water treatment devices is a combination of a reverse osmosis membrane device and a regenerative ion exchange tower,
A series of water treatment apparatuses other than the one series may be a combination of a reverse osmosis membrane apparatus and a non-regenerative ion exchange tower.
【００２４】本発明の好適な実施態様では、前記循環手
段は、第１の循環手段と第２の循環手段とで構成され、
第１の循環手段は、被処理水給水手段、水処理装置、殺
菌器、処理水集水手段及び処理水集水手段から水を被処
理水給水手段に戻す第１戻しラインからなる水の循環経
路を構成し、第２の循環手段は、被処理水送水ポンプの
吐出側配管、水処理装置、処理水集水手段、処理水集水
手段から水を戻す第２戻しライン及び第２戻しラインか
ら分岐されて各系列の被処理水送水ポンプの吐出側配管
にそれぞれ接続された分岐管からなる水の循環経路を構
成し、更に第２戻しラインに循環ポンプ、殺菌器及び冷
却器を備えていることを特徴としている。本実施態様に
おいて、第１の循環手段は、第１又は第２の純水の製造
方法を実施するために設けてあり、第２の循環手段は、
第３の純水の製造方法を実施するために設けてある。本
実施態様では、水処理装置がもともと殺菌器を備えてい
る時には、その殺菌器を第１の循環手段に殺菌器と共通
させ、新たに第１の循環手段に殺菌器を設ける必要はな
い。In a preferred embodiment of the present invention, the circulating means includes a first circulating means and a second circulating means,
The first circulating means is a circulating water comprising a treated water supply means, a water treatment device, a sterilizer, a treated water collecting means and a first return line for returning water from the treated water collecting means to the treated water supplying means. A second return line that returns water from the discharge-side pipe of the water-to-be-treated water supply pump, a water treatment device, a treated water collection unit, and a treated water collection unit; To form a water circulation path composed of branch pipes that are branched from and connected to the discharge-side pipes of the water supply pumps for each series, and further provided with a circulation pump, a sterilizer, and a cooler in the second return line. It is characterized by having. In the present embodiment, the first circulation means is provided for performing the first or second pure water production method, and the second circulation means is
The third pure water production method is provided. In the present embodiment, when the water treatment apparatus originally has a sterilizer, the sterilizer is used in common with the sterilizer in the first circulation means, and there is no need to newly provide a sterilizer in the first circulation means.
【００２５】本発明の原理は被処理水を一系列の水処理
装置によって処理して処理水を得るようにした純水の製
造方法にも適用できる。本発明に係る第４の純水の製造
方法は、被処理水を一系列の水処理装置によって処理し
て処理水を得るようにした純水の製造方法であって、運
転状態にある水処理装置から外部への処理水の送出を中
断する時には、その中断期間中、水処理装置から流出し
た処理水を殺菌処理し、次いで水処理装置の被処理水入
口に殺菌処理した処理水を導入して、処理水を水処理装
置内で循環させるようにしたことを特徴としている。第
４の純水の製造方法では、水処理装置から外部への処理
水の送出を中断する場合を規定し、水処理装置から外部
に処理水を送出している通常の運転状態の場合について
は規定していない。そこで、また、本発明に係る第５の
純水の製造方法は、更に、運転状態の系列の水処理装置
から外部へ処理水を送出している時には、運転状態にあ
る水処理装置から流出した処理水の一部を殺菌処理し、
次いで殺菌処理した処理水を水処理装置の被処理水入口
に被処理水と共に導入して、処理水を水処理装置内で循
環させ、一方、残余の処理水を外部に送出するようにし
たことを特徴としている。第５の純水の製造方法によれ
ば、常時、処理水が循環ラインを介して循環し、しかも
その循環水が殺菌されるので、第４の純水の製造方法を
単独で行うよりも、更に処理水の微生物濃度を低下させ
ることができる。The principle of the present invention can also be applied to a method for producing pure water in which treated water is treated by a series of water treatment apparatuses to obtain treated water. A fourth pure water production method according to the present invention is a pure water production method in which treated water is treated by a series of water treatment devices to obtain treated water, and wherein the water treatment in an operating state is performed. When the supply of treated water from the device to the outside is interrupted, during the interruption period, the treated water flowing out of the water treatment device is sterilized, and then the sterilized treated water is introduced into the treated water inlet of the water treatment device. Thus, the treated water is circulated in the water treatment device. In the fourth method for producing pure water, the case where the supply of treated water from the water treatment device to the outside is interrupted is specified, and in the case of a normal operation state in which the treated water is sent to the outside from the water treatment device, Not regulated. Therefore, in the fifth method for producing pure water according to the present invention, further, when the treated water is sent to the outside from the water treatment apparatus in the series of the operation state, the treated water is discharged from the water treatment apparatus in the operation state. Part of the treated water is sterilized,
Then, the sterilized treated water is introduced together with the treated water into the treated water inlet of the water treatment device, and the treated water is circulated in the water treatment device, while the remaining treated water is sent to the outside. It is characterized by. According to the fifth method for producing pure water, the treated water is always circulated through the circulation line, and the circulating water is sterilized. Further, the microorganism concentration of the treated water can be reduced.
【００２６】また、第４の純水の製造方法において、水
処理装置として、又はその一部として電気再生式イオン
交換装置を使用している時には、被処理水の通水の中断
期間中、電気再生式イオン交換装置の陽極と陰極間での
電圧の印加を中断することが望ましい。これにより、電
力使用量を軽減することができると共に電気再生式イオ
ン交換装置に使用されているイオン交換膜の劣化速度を
遅くして、膜の長寿命化を図ることができるからであ
る。In the fourth method for producing pure water, when an electric regeneration type ion exchange device is used as a water treatment device or as a part thereof, during the interruption of the passage of the water to be treated, It is desirable to interrupt the application of the voltage between the anode and the cathode of the regenerative ion exchange device. Thereby, the power consumption can be reduced and the deterioration rate of the ion exchange membrane used in the electric regeneration type ion exchange device can be reduced, so that the life of the membrane can be extended.
【００２７】第４及び第５の純水の製造方法を実施する
のに好適な本発明に係る純水製造装置は、一系列の水処
理装置を備え、被処理水を処理して処理水を得る純水製
造装置において、水処理装置の被処理水入口に処理水を
導入し、水処理装置内を通水して処理水出口から流出さ
せ、次いで流出した処理水を殺菌処理して、再び被処理
水入口に導入する循環経路で処理水を循環する循環手段
を設けたことを特徴としている。また、具体的には、水
処理装置は、逆浸透膜装置及び電気再生式イオン交換装
置のうちのいずれか一方からなる脱塩装置、又は双方を
直列に接続してなる脱塩装置を備えている。The pure water producing apparatus according to the present invention, which is suitable for carrying out the fourth and fifth pure water producing methods, comprises a series of water treatment apparatuses, and treats the water to be treated to remove the treated water. In the obtained pure water production apparatus, treated water is introduced into the treated water inlet of the water treatment apparatus, and water is passed through the water treatment apparatus to flow out of the treated water outlet, and then the treated water that has flowed out is sterilized, and is again sterilized. It is characterized in that a circulating means for circulating the treated water through a circulation path for introducing the treated water inlet is provided. Further, specifically, the water treatment apparatus includes a desalination apparatus including one of a reverse osmosis membrane apparatus and an electric regeneration type ion exchange apparatus, or a desalination apparatus including both connected in series. I have.
【００２８】また、好適な実施態様は、前記循環手段
（以下、第３の循環手段）は、水処理装置の入口手段、
水処理装置、水処理装置の出口手段、殺菌器及び水処理
装置の入口手段に処理水を戻す戻しラインとからなる処
理水の循環経路を構成することを特徴としている。出口
手段とは、水処理装置から流出する処理水を処理水タン
クに送るための出口配管、又は出口配管と接続して、処
理水を貯留する処理水タンクを言う。また、入口手段と
は、被処理水を貯留する被処理水タンク、又は水処理装
置に被処理水を送る送水ポンプと被処理水タンクの間の
入口配管を言う。尚、水処理装置が脱塩装置に続いて殺
菌器を有する時には、その殺菌器と循環手段の殺菌器と
を共通させ、新たに循環手段に殺菌器を設ける必要はな
い。In a preferred embodiment, the circulating means (hereinafter, referred to as a third circulating means) is an inlet means of a water treatment apparatus,
It is characterized by constituting a circulation path of treated water comprising a water treatment device, an outlet means of the water treatment device, a sterilizer and a return line for returning treated water to an inlet means of the water treatment device. The outlet means refers to an outlet pipe for sending the treated water flowing out of the water treatment device to the treated water tank, or a treated water tank connected to the outlet pipe to store the treated water. In addition, the inlet means refers to a treated water tank that stores the treated water, or an inlet pipe between a water pump that sends the treated water to the water treatment device and the treated water tank. When the water treatment apparatus has a sterilizer following the desalting apparatus, the sterilizer and the sterilizer of the circulation means are made common, and it is not necessary to newly provide a sterilizer in the circulation means.
【００２９】[0029]
【発明の実施の形態】複数系列の水処理装置を有し、第
１の純水の製造方法又は第２の純水の製造方法を実施す
る純水製造装置は、第１の循環手段を備えている。更
に、第３の純水の製造方法を実施する純水製造装置は、
第２の循環手段を備えている。また、一系列の水処理装
置を有し、第４の純水の製造方法又は第５の純水の製造
方法を実施する純水製造装置は、第３の循環手段を備え
ている。以下に、添付図面を参照し、実施例を挙げて、
本発明の実施の形態を具体的かつ詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION A pure water producing apparatus having a plurality of series of water treatment apparatuses and performing a first pure water producing method or a second pure water producing method has a first circulation means. ing. Further, a pure water production apparatus that implements the third pure water production method includes:
A second circulation means is provided. Further, a pure water producing apparatus that has a series of water treatment apparatuses and implements the fourth pure water producing method or the fifth pure water producing method includes a third circulation unit. Hereinafter, with reference to the accompanying drawings, examples,
Embodiments of the present invention will be described specifically and in detail.
【００３０】[0030]
【実施例】実施例１ 本実施例は、２系列の並列に設けられた水処理装置を有
する本発明に係る純水製造装置の実施例であって、第１
の純水の製造方法又は第２の純水の製造方法及び第３の
純水の製造方法を実施するための装置の例であり、図１
は実施例１の純水製造装置に設けられた脱塩及び殺菌装
置のフローシートである。本実施例の純水製造装置に設
けられた脱塩及び殺菌装置３０は、従来の純水製造装置
に設けられている図３に示す脱塩及び殺菌装置の構成に
加えて、図１に示すように、処理水をそれぞれ被処理水
送水ポンプ１４の入口又は出口に戻し、イオン交換塔１
２Ａ、Ｂ内を通水、循環させる第１の循環手段と、第２
の循環手段とを備えている。Embodiment 1 This embodiment is an embodiment of a pure water producing apparatus according to the present invention having water treatment apparatuses provided in two lines in parallel.
FIG. 1 is an example of an apparatus for implementing a method for producing pure water, a method for producing second pure water, and a method for producing third pure water.
3 is a flow sheet of a desalination and sterilization apparatus provided in the pure water production apparatus of Example 1. The desalination and sterilization apparatus 30 provided in the pure water production apparatus of the present embodiment is shown in FIG. 1 in addition to the configuration of the desalination and sterilization apparatus shown in FIG. 3 provided in the conventional pure water production apparatus. As described above, the treated water is returned to the inlet or the outlet of the treated water feed pump 14, respectively,
2A, a first circulating means for passing and circulating water in B, a second circulating means,
Circulating means.
【００３１】第１の循環手段は、イオン交換塔１２Ａ、
Ｂから流出した処理水を集水する集水管３２から被処理
水タンク２２に処理水を戻す第１戻しライン３４と、集
水管３２及び第１戻しライン３４に設けられた開閉弁３
６、３８とを有する。処理水が出来るだけ広い領域の配
管を循環するように、第１戻しライン３４は、処理水タ
ンク２０と集水管３２との接続端に近いところで集水管
３２に接続されている。開閉弁３６及び３８は、処理水
タンク２０の水位の設定上限及び設定下限を検知する液
面スイッチ３９と連動して開閉動作を行うようになって
いる。尚、被処理水タンク２２への接続に代えて、被処
理水の送水ポンプ１４Ａ、Ｂの共通の吸い込み側配管３
５に第１戻しライン３４を接続しても良いが、被処理水
タンク２２内での微生物の発生を防止するために被処理
水タンク２２に戻す方が望ましい。The first circulating means includes an ion exchange column 12A,
B, a first return line 34 for returning the treated water from the water collection pipe 32 for collecting the treated water flowing out to the treated water tank 22, and an on-off valve 3 provided in the water collection pipe 32 and the first return line 34.
6, 38. The first return line 34 is connected to the water collecting pipe 32 at a position near the connection end between the treated water tank 20 and the water collecting pipe 32 so that the treated water circulates in a pipe in an area as wide as possible. The on-off valves 36 and 38 open and close in conjunction with a liquid level switch 39 for detecting a set upper limit and a set lower limit of the water level of the treated water tank 20. In addition, instead of connecting to the to-be-treated water tank 22, the common suction side piping 3 of the to-be-treated water feed pumps 14A and 14B is used.
5 may be connected to the first return line 34, but it is desirable to return to the treated water tank 22 in order to prevent the generation of microorganisms in the treated water tank 22.
【００３２】第２の循環手段は、イオン交換塔１２Ａ、
Ｂからそれぞれ処理水を流出させる流出管４０Ａ、Ｂに
接続された個別の取り出し管４２Ａ、Ｂと、それらを合
流させた第２戻しライン４４と、第２戻しライン４４に
設けられ、処理水を循環する循環ポンプ４６と、循環ポ
ンプ４６の下流に順次設けられた紫外線殺菌器４８及び
冷却器５０と、第２戻しライン４４から分岐されて被処
理水の送水ポンプ１４Ａ、Ｂの吐出側配管５２Ａ、Ｂに
接続された分岐管５４Ａ、Ｂとを有する。また、流出管
４０Ａ、Ｂ、取り出し管４２Ａ、Ｂ、吐出側配管５２
Ａ、Ｂ及び分岐管５４Ａ、Ｂには、それぞれ開閉弁５６
Ａ、Ｂ、５８Ａ、Ｂ、６０Ａ、Ｂ及び６２Ａ、Ｂが設け
てある。処理水が出来るだけ広い領域の配管を循環する
ように、取り出し管４２Ａ、Ｂは流出管４０Ａ、Ｂの合
流点に近いところでそれぞれ流出管４０Ａ、Ｂに接続さ
れ、分岐管５４Ａ、Ｂは送水ポンプ１４Ａ、Ｂの吐出端
に近いところで吐出側配管５２Ａ、Ｂに接続される。The second circulating means includes an ion exchange column 12A,
B is provided in each of the outlet pipes 42A, B connected to the outflow pipes 40A, B for discharging the treated water from B, the second return line 44 where they are combined, and the second return line 44, respectively. A circulation pump 46 that circulates, an ultraviolet sterilizer 48 and a cooler 50 that are sequentially provided downstream of the circulation pump 46, and a discharge-side pipe 52A of the water supply pumps 14A and B that are branched from the second return line 44 and are to be treated. , B connected to branch pipes 54A, 54B. In addition, outflow pipes 40A, B, extraction pipes 42A, B, discharge side pipe 52
A, B and branch pipes 54A, B have on-off valves 56, respectively.
A, B, 58A, B, 60A, B and 62A, B are provided. The outlet pipes 42A and 42B are connected to the outlet pipes 40A and 40B near the junction of the outlet pipes 40A and 40B, respectively, so that the treated water circulates in the pipe as wide as possible. The discharge pipes 52A and 52B are connected near the discharge ends of 14A and 14B.
【００３３】紫外線殺菌器４８は、紫外線を照射するラ
ンプを備えた、一般的に使用される既知の殺菌器であっ
て、イオン交換塔１２Ａ、Ｂのいずれかが待機している
間にその系列で繁殖し、循環する水に同伴される微生物
を殺菌するために設けてある。また、冷却器５０は、循
環ポンプ５０で処理水を循環すると処理水の温度が上昇
するので、処理水を冷却するために設けられた冷却器で
あって、冷却水を使用して処理水を冷却する通常の形式
の冷却器である。The ultraviolet sterilizer 48 is a commonly used known sterilizer equipped with a lamp for irradiating ultraviolet rays, and is a series of the sterilizer while one of the ion exchange towers 12A and 12B is on standby. It is provided to kill microorganisms that are bred in water and are entrained in circulating water. The cooler 50 is a cooler provided for cooling the treated water because the temperature of the treated water rises when the treated water is circulated by the circulation pump 50. It is a usual type of cooler for cooling.
【００３４】以下に、本純水製造装置３０の運転方法を
第１ないし第３の純水の製造方法に従って説明する。こ
こでは、便宜的に、イオン交換塔１２Ａが運転状態にあ
り、イオン交換塔１２Ｂが待機状態にあるとする。第１
の純水の製造方法によれば、イオン交換塔１２Ａから流
出した処理水を貯留している処理水タンク２０の水位が
上昇して、設定上限水位に到達すると、処理水タンク２
０に設けられた液面スイッチ３９が作動して、開閉弁３
６が閉止され、開閉弁３８が開放される。The operation of the pure water producing apparatus 30 will be described below in accordance with the first to third pure water producing methods. Here, for convenience, it is assumed that the ion exchange tower 12A is in an operating state and the ion exchange tower 12B is in a standby state. First
According to the method for producing pure water described above, when the water level of the treated water tank 20 storing the treated water flowing out from the ion exchange tower 12A rises and reaches the set upper limit water level, the treated water tank 2
0, the liquid level switch 39 is activated, and the on-off valve 3
6 is closed, and the on-off valve 38 is opened.
【００３５】これにより、被処理水タンク２２、送水ポ
ンプ１４Ａ、イオン交換塔１２Ａ、レジンキャッチャ１
６、紫外線殺菌器１８及び第１戻しライン３４からなる
処理水の循環経路が確立される。その結果、循環経路内
のイオン交換塔１２Ａ及びその周りの機器、配管は、通
水中止されることなく、常時、水が流れるとともに、循
環する水は紫外線殺菌器１８で殺菌されるので、従来の
ように停滞した水に微生物が繁殖するような問題が無く
なる。よって、従来の純水の製造方法のように、処理水
の微生物濃度が高くなるようなことは無くなる。循環す
る処理水の水量は、水がイオン交換塔１２Ａ、レジンキ
ャッチャ１６、及び紫外線殺菌器１８等の機器並びにそ
れらの機器周りの配管に水が停滞しない程度の流量で良
いが、好ましくは、通水時に導入する被処理水の流量で
ある。尚、液面スイッチ３９の作動に連動して開閉弁３
６及び３８を開閉させる代わりに、水位が設定上限水位
に到達すると、液面スイッチ３９がそれを検知して警報
を発し、マニュアルで開閉弁３６及び３８を開閉するよ
うにしても良い。As a result, the water tank 22, the water pump 14A, the ion exchange tower 12A, the resin catcher 1
6. A circulation path of the treated water including the ultraviolet sterilizer 18 and the first return line 34 is established. As a result, the ion exchange tower 12 </ b> A in the circulation path and the devices and piping around it are constantly supplied with water without being interrupted, and the circulating water is sterilized by the ultraviolet sterilizer 18. As a result, the problem that microorganisms propagate in stagnant water is eliminated. Therefore, unlike the conventional method for producing pure water, the concentration of microorganisms in the treated water does not increase. The amount of the circulated treated water may be such that the water does not stagnate in devices such as the ion exchange tower 12A, the resin catcher 16, and the ultraviolet sterilizer 18, and the piping around those devices. This is the flow rate of the water to be treated introduced at the time of water. The on-off valve 3 interlocks with the operation of the liquid level switch 39.
Instead of opening and closing the valves 6 and 38, when the water level reaches the set upper limit water level, the liquid level switch 39 may detect this and generate an alarm, and the valves on and off 36 and 38 may be manually opened and closed.
【００３６】第２の純水の製造方法によれば、第１の純
水の製造方法の実施に加えて、イオン交換塔１２Ａの運
転中、処理水タンク２０の水位が設定上限水位より低
く、処理水を処理水タンク２０に流出している場合であ
っても、開閉弁３６を部分的に閉止し、一方、開閉弁３
８を部分的に開放し、上述の第１戻しライン３４を使っ
て処理水を被処理水タンク２２に戻し、被処理水と共に
処理水をイオン交換塔１２Ａの系列に導入、通水するこ
ともできる。この方法の場合に戻す処理水の流量は、イ
オン交換塔１２Ａから流出する処理水の流量の一部又は
全量である。本純水の製造方法によれば、イオン交換塔
１２Ａの運転中、処理水タンク２０の水位とは無関係
に、常時、戻しライン３４内を処理水が通水しているの
で、第１の純水の製造方法とは異なり、水の停滞により
微生物が戻しライン３４内で繁殖すると言う恐れが無く
なる。よって、第１の純水の製造方法に比べて、処理水
の微生物濃度が更に一層低下する。According to the second method for producing pure water, in addition to the first method for producing pure water, during operation of the ion exchange tower 12A, the water level of the treated water tank 20 is lower than the set upper limit water level. Even when the treated water is flowing into the treated water tank 20, the on-off valve 36 is partially closed, while the on-off valve 3 is closed.
8 is partially opened, the treated water is returned to the treated water tank 22 using the above-mentioned first return line 34, and the treated water is introduced into the series of the ion exchange tower 12A together with the treated water and passed therethrough. it can. The flow rate of the treated water returned in the case of this method is a part or the whole of the flow rate of the treated water flowing out of the ion exchange tower 12A. According to the present pure water production method, during the operation of the ion exchange tower 12A, regardless of the water level of the treated water tank 20, the treated water always flows through the return line 34. Unlike the water production method, there is no danger that microorganisms will propagate in the return line 34 due to stagnation of the water. Therefore, the microorganism concentration of the treated water is further reduced as compared with the first method for producing pure water.
【００３７】次に、第３の純水の製造方法を説明する。
イオン交換塔１２Ｂに充填されているイオン交換樹脂の
再生操作及びその他の必要な点検、保守作業が終了する
と、イオン交換塔１２Ｂの系列は、機器、配管を含めて
満水状態で待機状態に入る。この時点で、開閉弁５６
Ｂ、５８Ａ、６０Ｂ及び６２Ａを閉止し又はそれらが閉
止状態にあることを確認し、一方開閉弁５８Ｂ及び６２
Ｂを開放する。次いで、冷却器５０に冷却水を通水し、
紫外線殺菌器４８を作動させ、イオン交換塔１２Ｂ、流
出管４０Ｂ、取り出し管４２Ｂ、第２戻しライン４４、
循環ポンプ４６、紫外線殺菌器４８、冷却器５０、分岐
管５４Ｂ及び吐出側配管５２Ｂからなる循環経路を確立
する。Next, a third method for producing pure water will be described.
When the operation of regenerating the ion-exchange resin filled in the ion-exchange tower 12B and other necessary inspection and maintenance work are completed, the system of the ion-exchange tower 12B enters a standby state in a full state including the equipment and the piping. At this point, the on-off valve 56
B, 58A, 60B and 62A are closed or make sure they are in the closed state, while the on-off valves 58B and 62B are closed.
Release B. Next, cooling water is passed through the cooler 50,
The ultraviolet sterilizer 48 is operated, and the ion exchange tower 12B, the outflow pipe 40B, the take-out pipe 42B, the second return line 44,
A circulation path including the circulation pump 46, the ultraviolet sterilizer 48, the cooler 50, the branch pipe 54B, and the discharge pipe 52B is established.
【００３８】次いで、循環ポンプ４６を起動して、イオ
ン交換塔１２Ｂ系列内に滞留する水を系列内で循環させ
る。循環する水の水量は、イオン交換塔１２Ｂ及びその
周りの配管に水が停滞しない程度の流量とするが、好ま
しくは、運転時に導入する被処理水の流量である。水が
循環経路内のイオン交換塔１２Ｂ及び配管に通水、循環
されると、水の循環により微生物の繁殖が抑制されると
ともに、水の循環中に紫外線殺菌器４８で殺菌されるの
で、待機状態のイオン交換塔１２Ｂ内で繁殖する微生物
の絶対量が大幅に減少する。従って、従来の純水の製造
方法のように、待機状態のイオン交換塔及びその周りの
配管で繁殖する微生物のために、待機状態のイオン交換
塔を起動させた際に処理水中の微生物濃度が上がると言
うような問題が無くなる。Next, the circulation pump 46 is activated to circulate the water retained in the ion exchange tower 12B series in the series. The amount of circulating water is such that the water does not stagnate in the ion exchange tower 12B and the piping around it, but is preferably the flow rate of the water to be treated introduced during operation. When the water is passed and circulated through the ion exchange tower 12B and the piping in the circulation path, the propagation of microorganisms is suppressed by the circulation of the water, and the water is sterilized by the ultraviolet sterilizer 48 during the circulation of the water. The absolute amount of microorganisms that propagate in the ion exchange tower 12B in the state is greatly reduced. Therefore, as in the conventional method for producing pure water, the microorganism concentration in the treated water is reduced when the standby ion exchange tower is started due to the microorganisms that propagate in the standby ion exchange tower and the piping around the standby ion exchange tower. The problem of going up is eliminated.
【００３９】実施例２ 本実施例は、１系列の水処理装置を有する本発明に係る
純水製造装置であって、第４又は第５の純水の製造方法
を実施する装置の実施例であり、図２は実施例２の純水
製造装置に設けられた脱塩及び殺菌装置のフローシート
である。本実施例の純水製造装置に設けられた脱塩及び
殺菌装置９０は、従来の純水製造装置に設けられた図４
に示す脱塩及び殺菌装置の構成に加えて、図２に示すよ
うに、処理水を送水ポンプ８２の入口に戻し、逆浸透膜
装置７２及び電気再生式イオン交換装置７４内を通水、
循環させる第３の循環手段を備えている。 Embodiment 2 This embodiment is a pure water producing apparatus according to the present invention having one series of water treatment apparatuses, and is an embodiment of an apparatus for implementing the fourth or fifth pure water producing method. FIG. 2 is a flow sheet of a desalination and sterilization apparatus provided in the pure water production apparatus according to the second embodiment. The desalination and sterilization device 90 provided in the pure water production apparatus of the present embodiment is the same as that of the conventional pure water production apparatus shown in FIG.
In addition to the configuration of the desalination and sterilization device shown in FIG. 2, as shown in FIG. 2, the treated water is returned to the inlet of the water supply pump 82, and the water is passed through the reverse osmosis membrane device 72 and the electric regeneration type ion exchange device 74.
A third circulating means for circulating is provided.
【００４０】第３の循環手段は、電気再生式イオン交換
装置７４及び紫外線殺菌器７６を経て流出した処理水を
処理水タンク７８に送出する流出管９２から被処理水タ
ンク８０に処理水を戻す戻しライン９４と、流出管９２
及び戻しライン９４に設けられた開閉弁９６、９８とを
有する。尚、被処理水タンク８０への接続に代えて、被
処理水の送水ポンプ８２の吸い込み側配管９５に戻しラ
イン９４を接続しても良いが、被処理水タンク８０内で
の微生物の発生を防止するために被処理水タンク８０に
戻す方が望ましい。開閉弁９６及び９８は、処理水タン
ク７８の水位の設定上限及び設定下限を検知する液面ス
イッチ１００と連動して開閉動作を行うようになってい
る。また、戻しライン９４には、処理水の循環による温
度上昇の恐れが在る場合には、冷却水により処理水を冷
却する冷却器１０２を設けてもよい。The third circulating means returns the treated water to the treated water tank 80 from an outflow pipe 92 which sends out the treated water flowing through the electric regeneration type ion exchange device 74 and the ultraviolet sterilizer 76 to the treated water tank 78. Return line 94 and outlet pipe 92
And on-off valves 96 and 98 provided in the return line 94. Instead of connecting to the treated water tank 80, a return line 94 may be connected to the suction side pipe 95 of the treated water feed pump 82, but the generation of microorganisms in the treated water tank 80 may be reduced. It is desirable to return to the to-be-treated water tank 80 in order to prevent it. The on-off valves 96 and 98 open and close in conjunction with a liquid level switch 100 that detects a set upper limit and a set lower limit of the water level of the treated water tank 78. Further, in the case where there is a risk of temperature rise due to the circulation of the treated water, the return line 94 may be provided with a cooler 102 for cooling the treated water with the cooling water.
【００４１】運転に際して、第４の純水の製造方法によ
れば、電気再生式イオン交換装置７４及び紫外線殺菌器
７６を経て流出した処理水を貯留している処理水タンク
７８の水位が上昇して、設定上限水位に到達すると、処
理水タンク７８に設けられた液面スイッチ１００が作動
して、開閉弁９６が閉止され、開閉弁９８が開放され
る。これにより、被処理水タンク８０、送水ポンプ８
２、逆浸透膜装置７２、電気再生式イオン交換装置７
４、紫外線殺菌器７６及び戻しライン９４からなる処理
水の循環経路が確立される。その結果、逆浸透膜装置７
２及び電気再生式イオン交換装置７４は通水中止される
ことなく、常時、水が流れる。循環する処理水の流量
は、逆浸透膜装置７２、電気再生式イオン交換装置７
４、及び紫外線殺菌器７６等の機器及びそれらの機器接
続配管に水が停滞しない程度の流量で良いが、好ましく
は、通水時に導入する被処理水の流量である。尚、処理
水を循環させる時には、電気再生式イオン交換装置７４
の電極間には電圧を印加しなくても良い。During operation, according to the fourth method for producing pure water, the water level of the treated water tank 78 storing the treated water flowing out through the electric regeneration type ion exchange device 74 and the ultraviolet sterilizer 76 rises. Then, when the water reaches the set upper limit water level, the liquid level switch 100 provided in the treated water tank 78 is operated, the on-off valve 96 is closed, and the on-off valve 98 is opened. As a result, the water tank 80 to be treated, the water pump 8
2, reverse osmosis membrane device 72, electric regeneration type ion exchange device 7
4. A circulation path of the treated water including the ultraviolet sterilizer 76 and the return line 94 is established. As a result, the reverse osmosis membrane device 7
Water always flows through the second and electric regeneration type ion exchange devices 74 without interruption of water flow. The flow rate of the circulating treated water is determined by the reverse osmosis membrane device 72 and the electric regeneration type ion exchange device 7.
The flow rate of the water to be treated may be such that water does not stagnate in devices such as the UV sterilizer 76 and the ultraviolet sterilizer 76 and their connection pipes. When circulating the treated water, the electric regeneration type ion exchange device 74 is used.
It is not necessary to apply a voltage between the electrodes.
【００４２】以上説明したように、第４の純水の製造方
法によれば、脱塩及び殺菌装置９０は通水中止されるこ
となく常に水が流れているので、従来のように脱塩及び
殺菌装置内で停滞した水に微生物が繁殖するような問題
が無くなる。また、仮に微生物が繁殖しても、紫外線殺
菌器７６により殺菌される。尚、液面スイッチ１００の
作動に連動して開閉弁９６及び９８を開閉させる代わり
に、水位が設定上限水位に到達すると、液面スイッチ１
００がそれを検知して警報を発し、マニュアルで開閉弁
９６及び９８を開閉するようにしても良い。As described above, according to the fourth method for producing pure water, the desalination and sterilization apparatus 90 always flows without interruption of water supply. The problem that microorganisms propagate in the water that has stagnated in the sterilizer is eliminated. Even if the microorganisms propagate, they are sterilized by the ultraviolet sterilizer 76. Instead of opening and closing the on-off valves 96 and 98 in conjunction with the operation of the liquid level switch 100, when the water level reaches the set upper limit water level, the liquid level switch 1
00 may detect this and issue an alarm to open and close the on-off valves 96 and 98 manually.
【００４３】第５の純水の製造方法によれば、第４の純
水の製造方法の実施に加えて、脱塩及び殺菌装置９０の
運転中、処理水タンク７８の水位が設定上限水位より低
く、処理水を処理水タンク７８に流出している場合であ
っても、開閉弁９６を部分的に閉止し、一方、開閉弁９
８を部分的に開放し、上述の第１戻しライン９４を使っ
て処理水を被処理水タンク８０に戻し、被処理水と共に
処理水を脱塩及び殺菌装置９０に導入、通水することも
できる。この方法の場合に戻す処理水の流量は、脱塩及
び殺菌装置９０から流出する処理水の流量の一部又は全
量である。本純水の製造方法によれば、脱塩及び殺菌装
置９０の運転中、処理水タンク７８の水位とは無関係
に、常時、戻しライン９４内を処理水が通水しているの
で、第４の純水の製造方法とは異なり、水の停滞により
微生物が戻しライン９４内で繁殖すると言う恐れが無く
なる。よって、第４の純水の製造方法に比べて、処理水
の微生物濃度が更に一層低下する。According to the fifth pure water production method, in addition to the implementation of the fourth pure water production method, during operation of the desalination and sterilization apparatus 90, the water level of the treated water tank 78 exceeds the set upper limit water level. Even when the treated water is flowing out to the treated water tank 78, the on-off valve 96 is partially closed, while the on-off valve 9 is closed.
8 is partially opened, the treated water is returned to the treated water tank 80 using the above-mentioned first return line 94, and the treated water is introduced into the desalination and sterilization apparatus 90 together with the treated water and passed therethrough. it can. The flow rate of the treated water returned in this method is a part or the whole of the flow rate of the treated water flowing out of the desalination and sterilization apparatus 90. According to the method for producing pure water, during the operation of the desalination and sterilization apparatus 90, regardless of the water level of the treated water tank 78, the treated water always flows through the return line 94. Unlike the method of producing pure water, there is no fear that microorganisms will propagate in the return line 94 due to stagnation of water. Therefore, the microorganism concentration of the treated water is further reduced as compared with the fourth method for producing pure water.
【００４４】[0044]
【発明の効果】本発明によれば、並列複数系列の水処理
装置を交互に切り換えて運転して処理水を得る純水の製
造方法において、運転状態及び待機状態の各系列の水処
理装置の被処理水入口に水を導入し、水処理装置内を通
水して処理水出口から流出させ、次いで流出した水を殺
菌処理して、再び被処理水入口に導入するようにして水
を循環することにより、水処理装置内で水が停滞しない
ので、微生物の繁殖が抑制され、更には循環する水を殺
菌処理しているので、水処理装置系内での微生物の繁殖
をより確実に防止することができる。これにより、従来
の純水の製造方法に比べて、水処理装置から出る処理水
中の微生物濃度を大幅に低下させることができる。ま
た、本発明は被処理水を一系列の水処理装置によって処
理して処理水を得るようにした純水の製造方法にも適用
できる。また、本発明に係る純水製造装置は、上述の純
水の製造方法を実施するのに最適な純水製造装置を実現
している。According to the present invention, there is provided a method for producing pure water in which a plurality of parallel water treatment systems are alternately operated to obtain treated water. Water is introduced into the inlet of the water to be treated, passed through the water treatment device, flows out of the outlet of the treated water, and then the water that has flowed out is sterilized and circulated so as to be introduced again into the inlet of the water to be treated. By doing so, the water does not stagnate in the water treatment device, so that the growth of microorganisms is suppressed, and since the circulating water is sterilized, the growth of microorganisms in the water treatment device system is more reliably prevented. can do. As a result, the concentration of microorganisms in the treated water discharged from the water treatment device can be significantly reduced as compared with the conventional method for producing pure water. The present invention is also applicable to a method for producing pure water in which treated water is treated by a series of water treatment apparatuses to obtain treated water. Further, the pure water producing apparatus according to the present invention realizes an optimal pure water producing apparatus for performing the above-described pure water producing method.
【図１】本発明に係る純水製造装置の実施例１に設けら
れた脱塩及び殺菌装置の構成を示すフローシートであ
る。FIG. 1 is a flow sheet showing a configuration of a desalination and sterilization apparatus provided in Example 1 of a pure water production apparatus according to the present invention.
【図２】本発明に係る純水製造装置の実施例２に設けら
れた脱塩及び殺菌装置の構成を示すフローシートであ
る。FIG. 2 is a flow sheet showing a configuration of a desalination and sterilization apparatus provided in a pure water production apparatus according to a second embodiment of the present invention.
【図３】従来の純水製造装置の一部として設けられた２
系列並列の脱塩及び殺菌装置の構成を示すフローシート
である。FIG. 3 is a diagram showing a conventional pure water production apparatus provided with 2 parts.
It is a flow sheet which shows the structure of the desalination and sterilization apparatus of a series parallel.
【図４】従来の純水製造装置の一部として設けられた１
系列のみの脱塩及び殺菌装置の構成を示すフローシート
である。FIG. 4 is a diagram illustrating a part 1 provided as a part of a conventional pure water production apparatus.
It is a flow sheet which shows the structure of the desalination and sterilization apparatus of only a series.
１０ 従来の純水製造装置に設けられている脱塩装置及
び殺菌装置 １２ イオン交換塔 １４ 送水ポンプ １６ レジンキャッチャ １８ 紫外線殺菌器 ２０ 処理水タンク ２２ 被処理水タンク ３０ 純水製造装置の実施例１に設けられた脱塩及び殺
菌装置 ３２ 集水管 ３４ 第１戻しライン ３６、３８ 開閉弁 ３９ 液面スイッチ ４０ 流出管 ４２ 取り出し管 ４４ 第２戻しライン ４６ 循環ポンプ ４８ 紫外線殺菌器 ５０ 冷却器 ５２ 吐出側配管 ５４ 分岐管 ５６、５８、６０、６２ 開閉弁 ７０ 従来の純水製造装置に設けられている脱塩装置及
び殺菌装置の別の例 ７２ 逆浸透膜装置 ７４ 電気再生式イオン交換装置 ７６ 紫外線殺菌器 ７８ 処理水タンク ８０ 被処理水タンク ８２ 送水ポンプ ９０ 純水製造装置の実施例１に設けられた脱塩及び殺
菌装置 ９２ 流出管 ９４ 戻しライン ９６、９８ 開閉弁 １００ 液面スイッチ １０２ 冷却器DESCRIPTION OF SYMBOLS 10 Desalination apparatus and sterilization apparatus provided in the conventional pure water production apparatus 12 Ion exchange tower 14 Water pump 16 Resin catcher 18 Ultraviolet sterilizer 20 Treated water tank 22 Treated water tank 30 Example 1 of pure water production apparatus Dewatering / sterilizing device 32 Water collecting pipe 34 First return line 36, 38 Open / close valve 39 Liquid level switch 40 Outflow pipe 42 Outtake pipe 44 Second return line 46 Circulation pump 48 Ultraviolet sterilizer 50 Cooler 52 Discharge side Piping 54 Branch pipes 56, 58, 60, 62 On-off valve 70 Another example of a desalination device and sterilization device provided in a conventional pure water production device 72 Reverse osmosis membrane device 74 Electric regeneration type ion exchange device 76 Ultraviolet sterilization Container 78 Treated water tank 80 Treated water tank 82 Water pump 90 Desalination and killing provided in Example 1 of pure water production apparatus 92 outlet pipe 94 return line 96, 98 on-off valve 100 liquid level switch 102 cooler
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−81483（ＪＰ，Ａ) 特開 平５−68972（ＪＰ，Ａ) 特開 昭59−216687（ＪＰ，Ａ) 特開 平７−954（ＪＰ，Ａ) 特開 平６−55171（ＪＰ，Ａ) 特開 平６−233980（ＪＰ，Ａ) 特開 昭54−62645（ＪＰ，Ａ) 特開 昭57−4597（ＪＰ，Ａ) 特開 平４−161242（ＪＰ，Ａ) 特開 平７−222974（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C02F 1/00 B01D 61/02 C02F 1/32 C02F 1/42 C02F 1/44 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-81483 (JP, A) JP-A-5-68972 (JP, A) JP-A-59-216687 (JP, A) JP-A-7-78 954 (JP, A) JP-A-6-55171 (JP, A) JP-A-6-233980 (JP, A) JP-A-54-62645 (JP, A) JP-A-57-4597 (JP, A) JP-A-4-161242 (JP, A) JP-A-7-222974 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C02F 1/00 B01D 61/02 C02F 1/32 C02F 1/42 C02F 1/44
Claims (10)
のうち、少なくとも一の系列の水処理装置を待機させ、
待機させた系列以外の水処理装置に被処理水を導入して
通水運転する方式で、複数系列の水処理装置を交互に切
り換えて運転して処理水を得る純水の製造方法におい
て、 運転状態の系列の水処理装置から外部への処理水の送出
を中断する時には、その中断期間中、運転状態の系列の
水処理装置から流出した処理水を殺菌処理し、次いで運
転状態の系列の水処理装置の被処理水入口に殺菌処理し
た処理水を導入して、運転状態の系列の水処理装置内で
処理水を循環させるようにしたことを特徴とする純水の
製造方法。1. A water treatment device of at least one of a plurality of water treatment devices provided in parallel is made to stand by,
In a method for producing pure water, wherein a plurality of systems of water treatment devices are alternately switched to operate to obtain treated water by a method in which water to be treated is introduced into a water treatment device of a system other than the system in a standby state and water is operated. from the state of series of water treatment apparatus when interrupting the treated water delivery to the outside during the interruption period, sterilized the treated water flowing out of the <br/> water treatment apparatus series operating conditions, then luck
Sterilization treatment at the inlet of treated water of a water treatment system
Process water is introduced, the production method of the pure water, characterized in that so as to circulate the treated water in the water treatment device series operating conditions.
と、各系列の水処理装置の被処理水入口に被処理水をそ
れぞれ給水する被処理水給水手段と、各系列の水処理装
置の処理水出口からそれぞれ流出する処理水を集水する
処理水集水手段とを備え、少なくとも一の系列の水処理
装置を待機させ、待機させた系列以外の水処理装置に被
処理水を導入して通水運転する方式で、複数系列の水処
理装置を交互に切り換えて運転し、処理水を得る純水製
造装置において、 処理水集水手段から被処理水給水手段を介して又は介す
ることなく各系列の水処理装置の被処理水入口に水を戻
し、水処理装置内を通水して各系列の水処理装置の処理
水出口から流出させ、次いで流出した水を殺菌処理し、
処理水集水手段を経て再び被処理水入口に導入する循環
経路で水を循環する循環手段を設け、 前記循環手段は、第１の循環手段と第２の循環手段とで
構成され、 第１の循環手段は、被処理水給水手段、水処理装置、殺
菌器、処理水集水手段及び処理水集水手段から水を被処
理水給水手段に戻す第１戻しラインからなる水の循環経
路を構成し、 第２の循環手段は、被処理水送水ポンプの吐出側配管、
水処理装置、処理水集水手段、処理水集水手段から水を
戻す第２戻しライン及び第２戻しラインから分岐されて
各系列の被処理水送水ポンプの吐出側配管にそれぞれ接
続された分岐管からなる水の循環経路を構成し、更に第
２戻しラインに循環ポンプ、殺菌器及び冷却器を備えて
いる ことを特徴とする純水製造装置。2. A plurality of water treatment apparatuses provided in parallel, treated water supply means for supplying treated water to a treated water inlet of each series of water treatment apparatuses, and a treated water treatment apparatus of each series. And a treated water collecting means for collecting treated water flowing out from the treated water outlet of at least one of the series of water treatment apparatuses. In a pure water production system that obtains treated water by alternately switching and operating multiple systems of water treatment equipment in a method of passing water, the treated water is supplied from the treated water collecting means to or through the treated water supply means. Without returning the water to the treated water inlet of each series of water treatment equipment, flowing through the water treatment equipment and flowing out of the treated water outlet of each series of water treatment equipment, and then sterilizing the effluent water,
Circulating means for circulating water through a circulating path for introducing the treated water to the inlet of the treated water again through the treated water collecting means , wherein the circulating means comprises a first circulating means and a second circulating means;
Is configured, the first circulating means, water to be treated water supply means, the water treatment apparatus, killing
Water from the fungus, treated water collecting means and treated water collecting means
Circulation of water consisting of a first return line returning to the water supply means
A passage, and the second circulating means includes: a discharge-side pipe of the water supply pump;
Water from the water treatment device, treated water collecting means, treated water collecting means
Return from the second return line and the second return line
Connect to the discharge-side piping of the water supply pump for each series.
A water circulation path consisting of a continuous branch pipe is constructed.
2 Return line with circulation pump, sterilizer and cooler
Pure water production apparatus characterized by there.
ン交換装置、非再生式イオン交換装置及び逆浸透膜装置
のうちのいずれか一つを脱塩装置として備えていること
を特徴とする請求項２に記載の純水製造装置。3. The water treatment apparatus of each series is provided with any one of a chemical regeneration type ion exchange apparatus, a non-regenerative type ion exchange apparatus and a reverse osmosis membrane apparatus as a desalination apparatus. The apparatus for producing pure water according to claim 2 .
交換装置、非再生式イオン交換装置及び逆浸透膜装置の
うち相互に同じ種類又は相互に異なる種類の装置を少な
くとも２基直列に接続してなる脱塩装置を備えているこ
とを特徴とする請求項２に記載の純水製造装置。4. A water treatment apparatus of each series is connected in series with at least two apparatuses of the same type or different types among a regenerative ion exchange apparatus, a non-regenerative ion exchange apparatus and a reverse osmosis membrane apparatus. 3. The pure water production apparatus according to claim 2 , further comprising a desalination apparatus.
互に同じであることを特徴とする請求項２から４のうち
のいずれか１項に記載の純水製造装置。5. The pure water production apparatus according to claim 2, wherein the configuration of each series of water treatment apparatuses is the same between the series.
処理し、得た処理水を処理水タンクに貯水するようにし
た純水の製造方法であって、 運転状態にある水処理装置から処理水タンクへの処理水
の送出を中断する時には、その中断期間中、水処理装置
から流出した処理水を殺菌処理し、次いで水処理装置の
被処理水入口に殺菌処理した処理水を導入して、処理水
を水処理装置内で循環させるようにしたことを特徴とす
る純水の製造装方法。6. A method for producing pure water in which water to be treated is treated by a series of water treatment devices, and the obtained treated water is stored in a treated water tank. When the supply of the treated water to the treated water tank is interrupted , the treated water flowing out of the water treatment device is sterilized during the interruption period, and then the sterilized treated water is introduced into the treated water inlet of the water treatment device. Wherein the treated water is circulated in the water treatment apparatus.
て、 水処理装置として又はその一部として、電気再生式イオ
ン交換装置を使用している時には、処理水の送出の中断
期間中、電気再生式イオン交換装置の陽極と陰極間での
電圧の印加を中断することを特徴とする純水の製造方
法。7. Claim6Of pure water production method described in
As a water treatment system or as part of it,
When using a water exchange device, interrupt the delivery of treated water
During the period, the electric regenerative ion exchange
The production of pure water characterized by interrupting the application of voltageRecipe
Law.
処理し、得た処理水を処理水タンクに貯水するようにし
た純水製造装置において、運転状態にある水処理装置から処理水タンクへの処理水
の送出を中断する手段と、水処理装置内で殺菌処理さ
れ、処理水出口から流出した処理水を、 再び水処理装置
の被処理水入口に導入する循環経路で処理水を循環する
循環手段とを設けたことを特徴とする純水製造装置。 8. A process for-treatment water on a water treatment device in one series, so as to water the treated water obtained in the treated water tank
In pure water production apparatus, treated water to the treated water tank from the water treatment apparatus in an operating state
Means for interrupting the delivery of water and sterilization treatment in the water treatment equipment.
The treated water flowing out of the treated water outlet is returned to the water treatment
Pure water production apparatus characterized in that a circulation means for circulating the treated water in the circulation path for introducing the treated water inlet of the.
生式イオン交換装置のうちのいずれか一方からなる脱塩
装置、又は双方を直列に接続してなる脱塩装置を備えて
いることを特徴とする請求項８に記載の純水製造装置。9. The water treatment apparatus includes a desalination apparatus including one of a reverse osmosis membrane apparatus and an electric regeneration type ion exchange apparatus, or a desalination apparatus including both connected in series. The pure water production apparatus according to claim 8 , wherein:
段、水処理装置、水処理装置の出口手段、殺菌器及び水
処理装置の入口手段に処理水を戻す戻しラインからなる
処理水の循環経路を構成することを特徴とする請求項８
又は９に記載の純水製造装置。Wherein said circulation means, inlet means for water treatment devices, water treatment apparatus, the outlet means of the water treatment apparatus, sterilizer and line or Ranaru treated water returns returns the treated water to the inlet means of the water treatment apparatus claim 8, characterized in that it constitutes a circulation path of the
Or the pure water production apparatus according to 9 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27836695A JP3299093B2 (en) | 1995-10-02 | 1995-10-02 | Pure water production method and pure water production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27836695A JP3299093B2 (en) | 1995-10-02 | 1995-10-02 | Pure water production method and pure water production equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0994562A JPH0994562A (en) | 1997-04-08 |
| JP3299093B2 true JP3299093B2 (en) | 2002-07-08 |
Family
ID=17596346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27836695A Expired - Fee Related JP3299093B2 (en) | 1995-10-02 | 1995-10-02 | Pure water production method and pure water production equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3299093B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4848641B2 (en) * | 2005-02-01 | 2011-12-28 | 栗田工業株式会社 | Pure water production method and apparatus |
| JP4969071B2 (en) * | 2005-08-31 | 2012-07-04 | 坂本精器株式会社 | Water purifier |
| JP2007252396A (en) * | 2006-03-20 | 2007-10-04 | Kitasato Gakuen | Manufacturing device and manufacturing method of medical purpose dialysis fluid |
| JP4947693B2 (en) * | 2006-07-14 | 2012-06-06 | 学校法人北里研究所 | Method for separating albumin and biomolecules bound to albumin |
| JP5480534B2 (en) * | 2009-06-01 | 2014-04-23 | ダイセン・メンブレン・システムズ株式会社 | Method for producing medical purified water |
| JP4440989B1 (en) * | 2009-06-03 | 2010-03-24 | ダイセン・メンブレン・システムズ株式会社 | Method for producing purified water |
| CN109574288B (en) * | 2017-09-28 | 2024-02-20 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system |
-
1995
- 1995-10-02 JP JP27836695A patent/JP3299093B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0994562A (en) | 1997-04-08 |
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