JP2002346570A - Apparatus for sterilizing resistivity adjusted water - Google Patents
Apparatus for sterilizing resistivity adjusted waterInfo
- Publication number
- JP2002346570A JP2002346570A JP2001151172A JP2001151172A JP2002346570A JP 2002346570 A JP2002346570 A JP 2002346570A JP 2001151172 A JP2001151172 A JP 2001151172A JP 2001151172 A JP2001151172 A JP 2001151172A JP 2002346570 A JP2002346570 A JP 2002346570A
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- Prior art keywords
- ozone
- water
- specific resistance
- ultraviolet
- sterilizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、比抵抗が調整され
た水を殺菌するための装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for disinfecting water whose resistivity has been adjusted.
【０００２】[0002]
【従来の技術】比抵抗を所望の値に調整した水は、各種
製品の生産工場などで幅広く利用されている。2. Description of the Related Art Water whose specific resistance is adjusted to a desired value is widely used in factories for producing various products.
【０００３】例えば、アルミ缶等の製缶工場において
は、缶内部に比抵抗調整水を充填し、充填後の水と缶の
導電性を確認することにより、缶の不良品検査を実施す
ることが行われている。このような導電率測定による検
査で使用される比抵抗調整水には、その比抵抗値の変動
が検査に及ぼす影響が大きいため、比抵抗値の変動を極
力低減した水であることが望まれている。For example, in a can manufacturing plant for aluminum cans or the like, defective cans are inspected by filling the can with specific resistance adjusting water and confirming the conductivity of the filled water and the can. Has been done. Since the specific resistance adjustment water used in the inspection by such conductivity measurement has a large influence on the inspection due to the fluctuation of the specific resistance value, it is desired that the water have the minimum possible change in the specific resistance value. ing.
【０００４】従来、このような比抵抗調整水の供給のた
めには、イオン交換設備等で純水を製造し、該純水に炭
酸を溶解させることで比抵抗を安定化させることが行わ
れている（特公昭６３−２２３１号公報）。Conventionally, in order to supply such specific resistance adjusting water, pure water is produced by ion exchange equipment or the like, and carbon dioxide is dissolved in the pure water to stabilize the specific resistance. (Japanese Patent Publication No. 63-2231).
【０００５】近年、このような比抵抗調整水に限らず、
各種工場で使用される純水等は、環境負荷の低減やコス
トダウンを目的として、ユースポイントで使用後、回収
再利用することが行われている。比抵抗調整水を用いた
設備においても、使用済み比抵抗調整水を回収し、必要
に応じて純度や比抵抗を調整した後、循環再使用するこ
とが行われている。[0005] In recent years, the water is not limited to the specific resistance adjusting water,
BACKGROUND ART Pure water and the like used in various factories are collected and reused after use at a point of use for the purpose of reducing environmental load and reducing costs. In equipment using specific resistance adjusted water, it is also practiced to collect used specific resistance adjusted water, adjust purity and specific resistance as needed, and then recycle.
【０００６】この使用済み比抵抗調整水（以下「回収
水」と称す場合がある。）を回収して再使用する場合、
ＴＯＣ（全有機炭素）成分が混入すると、特に循環水系
内に微生物が繁殖しやすく、微生物が製品に付着するこ
とにより商品価値が低下もしくは不良品化する場合があ
る。このため、紫外線殺菌装置、熱水殺菌装置、電子線
殺菌装置、限外濾過膜除菌装置等を用いて回収水を殺菌
ないし除菌することが行われている。When this used specific resistance adjusted water (hereinafter sometimes referred to as “recovered water”) is collected and reused,
When TOC (total organic carbon) components are mixed, microorganisms can easily propagate, especially in the circulating water system, and the microorganisms may adhere to products, resulting in reduced commercial value or defective products. Therefore, the recovered water is sterilized or sterilized using an ultraviolet sterilizer, a hot water sterilizer, an electron beam sterilizer, an ultrafiltration membrane sterilizer, or the like.
【０００７】[0007]
【発明が解決しようとする課題】上記従来の殺菌ないし
除菌装置のうち、該殺菌ないし除菌装置の後段の循環配
管中に発生する微生物をも殺菌ないし除菌することがで
きるものは、熱水殺菌装置のみであるが、比抵抗調整水
の回収、循環系に熱水を循環すると、耐熱性に劣るプラ
スチック配管やイオン交換樹脂、イオン交換膜等を劣化
させる恐れがある。また、劣化の恐れがある部位を耐熱
性のものに置き換えると設備コストが高価になる。この
ため、通常の回収水循環系では、熱水殺菌装置の適用は
好ましくない。Among the above-mentioned conventional sterilizing or disinfecting devices, those which can also disinfect or disinfect microorganisms generated in the circulation pipe at the subsequent stage of the disinfecting or disinfecting device are heat-dissipating devices. Although only the water sterilizer is used, if hot water is circulated through the recovery and circulation system of the specific resistance adjusting water, there is a possibility that plastic pipes, ion exchange resins, ion exchange membranes, etc., which have poor heat resistance, may be deteriorated. In addition, if a part that may be deteriorated is replaced with a heat-resistant part, the equipment cost increases. For this reason, in a normal recovered water circulation system, application of a hot water sterilizer is not preferable.
【０００８】また、比抵抗調整水の回収、循環系におい
ては、回収水の比抵抗値に影響を与えることなく、系内
の微生物の繁殖を抑えることが望まれる。[0008] Further, in the recovery and circulation system of the resistivity-regulated water, it is desired to suppress the growth of microorganisms in the system without affecting the resistivity of the recovered water.
【０００９】本発明は、比抵抗調整水の回収、循環系に
おいて、回収水の比抵抗値に影響を及ぼすことなく、系
内を効果的に殺菌することができる比抵抗調整水殺菌装
置を提供することを目的とする。The present invention provides a specific resistance-adjusted water sterilizer capable of effectively disinfecting the system of the specific resistance adjusted water in the recovery and circulation system without affecting the specific resistance of the recovered water. The purpose is to do.
【００１０】[0010]
【課題を解決するための手段】本発明の比抵抗調整水殺
菌装置は、比抵抗値が調整された水を殺菌する装置であ
って、比抵抗値が調整された被処理水中のオゾンを分解
するためのオゾン分解装置と、該オゾン分解装置でオゾ
ン分解処理された被処理水に紫外線を照射して殺菌する
紫外線殺菌手段と、該紫外線殺菌手段で殺菌された被処
理水にオゾンを添加するオゾン添加手段とを備えたこと
を特徴とする。SUMMARY OF THE INVENTION A specific resistance adjusted water disinfection apparatus of the present invention is an apparatus for disinfecting water whose specific resistance value has been adjusted, and decomposes ozone in the treated water whose specific resistance value has been adjusted. An ozone decomposing device, an ultraviolet sterilizing means for irradiating the water to be treated ozone decomposed by the ozone decomposing apparatus with ultraviolet rays to sterilize the water, and adding ozone to the water to be treated sterilized by the ultraviolet sterilizing means. Ozone adding means.
【００１１】本発明において、紫外線殺菌手段は、回収
水の比抵抗値に影響を与えることなく、系内の微生物又
は芽胞菌を殺菌もしくはその繁殖能力を低減させる。オ
ゾン添加手段は、紫外線照射された回収水の一部もしく
は全量にオゾンを溶解させ、オゾンの殺菌力により、以
降の循環配管やユースポイント内の微生物の繁殖を抑制
する。In the present invention, the ultraviolet sterilizing means sterilizes microorganisms or spores in the system or reduces their reproduction ability without affecting the specific resistance of the recovered water. The ozone adding means dissolves ozone in a part or the whole amount of the recovered water irradiated with ultraviolet rays, and suppresses the propagation of microorganisms in the circulation pipes and use points thereafter by the sterilizing power of ozone.
【００１２】ところで、オゾン含有水に紫外線を照射す
ると、著しく強い酸化作用が生じ、水中の有機物が分解
してイオン化し、比抵抗値に影響を与える。このため、
本発明では、オゾン添加手段を紫外線殺菌手段の後段に
設けると共に、紫外線殺菌手段の前段にオゾン分解手段
を設ける。When the ozone-containing water is irradiated with ultraviolet rays, an extremely strong oxidizing action occurs, and organic substances in the water are decomposed and ionized, thereby affecting the specific resistance. For this reason,
In the present invention, the ozone adding means is provided after the ultraviolet sterilizing means, and the ozone decomposing means is provided before the ultraviolet sterilizing means.
【００１３】請求項２の比抵抗調整水殺菌装置は、更
に、比抵抗調整水殺菌装置の処理水のオゾン濃度を計測
するオゾン濃度計測手段と該オゾン濃度計測手段で得ら
れるオゾン濃度に基き、前記オゾン添加手段におけるオ
ゾン添加量を制御する制御手段とを備えたことを特徴と
するものであり、回収水中に所定濃度のオゾンを溶解さ
せて確実に殺菌を行うことができる。According to a second aspect of the present invention, the specific resistance adjusting water sterilizer further includes an ozone concentration measuring means for measuring an ozone concentration of the treated water of the specific resistance adjusting water sterilizing apparatus, and an ozone concentration obtained by the ozone concentration measuring means. A control means for controlling the amount of ozone added in the ozone adding means is provided, and a predetermined concentration of ozone can be dissolved in the recovered water to reliably perform sterilization.
【００１４】請求項３の比抵抗調整水殺菌装置は、オゾ
ン添加手段が、被処理水にオゾンを間欠的に添加するオ
ゾン添加手段であり、この間欠添加時間を設定する間欠
添加時間設定器を備えたことを特徴とするものであっ
て、オゾンの間欠添加の時間間隔を調節することによ
り、オゾン使用量を節減した上で効率的な殺菌を行うこ
とができる。According to a third aspect of the present invention, the ozone adding means is an ozone adding means for intermittently adding ozone to the water to be treated, and an intermittent addition time setting device for setting the intermittent addition time. By adjusting the time interval of the intermittent addition of ozone, the amount of ozone used can be reduced and efficient sterilization can be performed.
【００１５】[0015]
【発明の実施の形態】以下に図面を参照して、本発明の
実施の形態を詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１６】図１は本発明の比抵抗調整水殺菌装置の実
施の形態を示す系統図である。FIG. 1 is a system diagram showing an embodiment of a specific resistance adjusting water sterilizer according to the present invention.
【００１７】図１の比抵抗調整水殺菌装置は、缶検査プ
ロセス１０からの回収水をポンプＰでオゾン分解装置
１、微粒子除去装置２及び紫外線殺菌装置３に順次通水
して処理し、紫外線殺菌した水の一部をオゾン溶解装置
４に通水し、残部はそのままオゾン溶解装置４からの水
と合流して缶検査プロセス１０に循環するものである。
なお、この実施の形態では、オゾン濃度計５により、缶
検査プロセス１０に循環される水のオゾン濃度を測定
し、この測定結果に基いてオゾン溶解装置４のオゾン溶
解量を制御するように構成されている。The specific resistance-adjusted water sterilizer shown in FIG. 1 treats the recovered water from the can inspection process 10 by passing it through a pump P to an ozonizer 1, a particle remover 2 and an ultraviolet sterilizer 3 sequentially. A part of the sterilized water is passed through the ozone dissolving device 4, and the rest merges with the water from the ozone dissolving device 4 and circulates to the can inspection process 10.
In this embodiment, the ozone concentration meter 5 measures the ozone concentration of the water circulated to the can inspection process 10, and controls the ozone dissolution amount of the ozone dissolution device 4 based on the measurement result. Have been.
【００１８】オゾン分解装置１としては、活性炭塔、還
元剤添加等を用いることができる。オゾン分解装置１に
より、回収水中のオゾンを分解除去し、オゾンが紫外線
殺菌装置３で紫外線照射されることにより分解、イオン
化して比抵抗値に影響を及ぼすことが防止される。即
ち、図１に示す如く、回収水を紫外線殺菌装置３及びオ
ゾン溶解装置４に通水して殺菌処理した後これを缶検査
プロセス１０に循環する場合、缶検査プロセス１０から
の回収水中には、オゾン溶解装置４で添加されたオゾン
が含まれている。従って、図１の装置では、この回収水
中のオゾンをオゾン分解装置１で分解して除去する。As the ozone decomposing device 1, an activated carbon tower, a reducing agent addition or the like can be used. The ozone decomposer 1 decomposes and removes ozone in the recovered water, and prevents ozone from being decomposed and ionized by being irradiated with ultraviolet light by the ultraviolet sterilizer 3, thereby affecting the specific resistance value. That is, as shown in FIG. 1, when the recovered water is passed through an ultraviolet sterilizer 3 and an ozone dissolver 4 to be sterilized and then circulated to the can inspection process 10, the recovered water from the can inspection process 10 And ozone added by the ozone dissolving device 4. Therefore, in the apparatus shown in FIG. 1, ozone in the recovered water is decomposed and removed by the ozone decomposer 1.
【００１９】特に、オゾン分解装置１として活性炭塔を
用いた場合には、回収水中のＴＯＣ成分をも分解除去し
てＴＯＣ成分が紫外線殺菌装置３で紫外線照射されるこ
とにより分解、イオン化することによる比抵抗値の変化
も防止することができる。In particular, when an activated carbon tower is used as the ozone decomposer 1, the TOC component in the recovered water is also decomposed and removed, and the TOC component is decomposed and ionized by being irradiated with ultraviolet light in the ultraviolet sterilizer 3. A change in the specific resistance value can also be prevented.
【００２０】微粒子除去装置２としては、各種のフィル
タや、限外濾過膜分離装置等を用いることができる。こ
の微粒子除去装置２により、缶検査プロセス１０や活性
炭塔等のオゾン分解装置１から流出する微粒子を除去し
て回収水の純度を高めることができる。As the fine particle removing device 2, various filters, ultrafiltration membrane separation devices and the like can be used. The fine particle removing device 2 can remove fine particles flowing out of the ozone decomposing device 1 such as the can inspection process 10 or the activated carbon tower, and can increase the purity of the recovered water.
【００２１】微粒子除去装置２の流出水は、次いで紫外
線殺菌装置３で紫外線照射により殺菌が行われる。図１
の装置では、回収水の循環系において、水中の微生物が
紫外線殺菌装置３で繰り返し紫外線照射されることによ
り、死滅するか、少なくとも増殖能力を失う。The effluent from the fine particle removing device 2 is then sterilized by ultraviolet irradiation in an ultraviolet sterilizing device 3. FIG.
In the apparatus of (1), in the circulation system of the recovered water, the microorganisms in the water are repeatedly irradiated with ultraviolet light by the ultraviolet light sterilizing apparatus 3 to die or at least lose the growth ability.
【００２２】紫外線殺菌装置３の流出水は一部がオゾン
溶解装置４に導入され、残部は直接缶検査プロセス１０
に循環される。A part of the effluent from the ultraviolet sterilizer 3 is introduced into the ozone dissolving apparatus 4 and the rest is directly sent to the can inspection process 10.
Circulated to
【００２３】オゾン溶解装置４でオゾンを添加すること
により、紫外線殺菌装置３での紫外線殺菌後にも水中に
残留する耐性菌の殺菌を行うことができ、また、オゾン
溶解装置４以降の循環配管における微生物の増殖も抑制
することができる。更には、密閉系の缶検査プロセス１
０において、比抵抗調整水中から気化したオゾンによ
り、製造環境における滅菌を行うことができる。By adding ozone in the ozone dissolving device 4, it is possible to sterilize resistant bacteria remaining in water even after ultraviolet disinfection in the ultraviolet disinfecting device 3. The growth of microorganisms can also be suppressed. Furthermore, closed can inspection process 1
At 0, sterilization in the production environment can be performed with ozone vaporized from the resistivity adjusted water.
【００２４】このオゾン溶解装置４へは、紫外線殺菌装
置３の流出水の全量を導入しても良いが、図１に示す如
く、その一部、例えば５〜５０％をオゾン溶解装置４に
導入し、オゾン添加後、紫外線殺菌装置３の流出水の残
部と合流させるようにしてもよい。このようにすれば、
オゾン溶解装置４を小型化することができる。The entire amount of the effluent from the ultraviolet sterilizer 3 may be introduced into the ozone dissolving apparatus 4, but as shown in FIG. Then, after the addition of ozone, the ozone may be combined with the rest of the effluent of the ultraviolet sterilizer 3. If you do this,
The size of the ozone dissolving device 4 can be reduced.
【００２５】図１の装置では、回収水の循環系の缶検査
プロセス１０の入口に設けたオゾン濃度計５により循環
水中のオゾン濃度を測定し、この測定値に基いてオゾン
溶解装置４におけるオゾン添加量を制御することによ
り、オゾン添加量の過不足を防止し、過剰量のオゾンに
よる缶検査プロセス１０への悪影響を引き起こすことな
く、殺菌に十分なオゾンを添加して、安定かつ確実な殺
菌を行う。In the apparatus shown in FIG. 1, the ozone concentration in the circulating water is measured by the ozone concentration meter 5 provided at the inlet of the can inspection process 10 for the circulating system of the recovered water. By controlling the amount of addition, it is possible to prevent excess and deficiency of the amount of added ozone, and to add sufficient ozone for sterilization without causing an adverse effect on the can inspection process 10 due to the excessive amount of ozone, thereby ensuring stable and reliable sterilization. I do.
【００２６】このオゾン濃度計５の測定値に基いて、オ
ゾン溶解装置４におけるオゾン添加量を制御するには、
例えば、オゾン溶解装置４のオゾン発生器へ供給する酸
素量を調節する。即ち、オゾン濃度計５の測定値が設定
値よりも少ない場合には、オゾン発生器への酸素供給量
を増加してオゾン発生量を増やし、オゾン濃度計５の測
定値が設定値よりも多い場合にはオゾン発生器への酸素
供給量を低減して、オゾン発生量を減少させ、これによ
りオゾン添加量を調節する。オゾン発生器への酸素供給
量を増減するには、例えば、オゾン発生器に空気を供給
するコンプレッサ（空気圧縮器）をインバータ制御した
り、オゾン発生器への酸素供給ラインに設けた調節弁
（０〜１００％の開度調節ができる弁）の開度を調節す
る。In order to control the amount of ozone added in the ozone dissolving apparatus 4 based on the measured value of the ozone concentration meter 5,
For example, the amount of oxygen supplied to the ozone generator of the ozone dissolving device 4 is adjusted. That is, when the measured value of the ozone densitometer 5 is smaller than the set value, the amount of oxygen supplied to the ozone generator is increased to increase the ozone generation amount, and the measured value of the ozone densitometer 5 is larger than the set value. In such a case, the amount of oxygen supplied to the ozone generator is reduced to reduce the amount of ozone generated, thereby adjusting the amount of ozone added. In order to increase or decrease the amount of oxygen supplied to the ozone generator, for example, a compressor (air compressor) that supplies air to the ozone generator is controlled by an inverter, or a control valve ( The degree of opening of a valve that can be adjusted from 0 to 100% is adjusted.
【００２７】本発明において、このオゾン溶解装置４
は、オゾンを間欠的に添加すると共に、このオゾンの間
欠添加の時間間隔を任意に制御できるものが好ましい。In the present invention, the ozone dissolving device 4
It is preferable that ozone is added intermittently and the time interval of the intermittent addition of ozone can be arbitrarily controlled.
【００２８】即ち、夏季は水温が高くなり、微生物が生
育し易いが、冬季は水温が低く、微生物が生育しにく
い。このような外部環境による微生物の増殖傾向の変化
に対応するには、オゾン濃度に基く管理よりも、オゾン
添加を間欠的に行い、添加時間（ＯＮ時間）と添加停止
時間（ＯＦＦ時間）とを季節等に応じて予め設定してお
き、例えば、夏季はＯＮ時間を長めに或いはＯＦＦ時間
を短めに設定し、冬季はＯＮ時間を短めに或いはＯＦＦ
時間を長めに設定し、設定した時間間隔でオゾンを間欠
添加するのが好ましい。このように、オゾンの間欠添加
の時間間隔を設定することができるオゾン溶解装置であ
れば、オゾン添加量の調節を容易に行うことができる。In other words, the water temperature is high in summer and microorganisms are easy to grow, but the water temperature is low in winter and microorganisms are difficult to grow. To cope with such a change in the growth tendency of microorganisms due to the external environment, ozone addition is performed intermittently, rather than management based on ozone concentration, and the addition time (ON time) and addition stop time (OFF time) are reduced. It is set in advance according to the season and the like. For example, the ON time is set longer or the OFF time is set shorter in summer, and the ON time is set shorter or OFF in winter.
It is preferable to set the time longer, and to add ozone intermittently at set time intervals. As described above, with an ozone dissolving apparatus that can set the time interval of intermittent addition of ozone, the amount of added ozone can be easily adjusted.
【００２９】[0029]
【実施例】以下に実施例及び比較例を挙げて本発明をよ
り具体的に説明する。The present invention will be described more specifically below with reference to examples and comparative examples.
【００３０】実施例１ 図１に示す缶検査プロセス１０からの回収水を１０ｍ３
／ｈｒの流量で処理する殺菌循環系において、本発明に
よる殺菌効果を調べた。Example 1 10 m 3 of recovered water from the can inspection process 10 shown in FIG.
The sterilization effect according to the present invention was examined in a sterilization circulation system treated at a flow rate of / hr.
【００３１】用いたオゾン分解装置、微粒子除去装置、
紫外線殺菌装置及びオゾン溶解装置は、次の通りであ
る。 オゾン分解装置：活性炭塔 通水ＳＶ＝５０ｈｒ−１ 微粒子除去装置：保安フィルタ（孔径１μｍ） 紫外線殺菌装置：波長２５３．７ｎｍの紫外線を照射する装置 滞留時間６秒 オゾン溶解装置：オゾンを間欠添加するオゾン溶解装置The ozone decomposing device, the fine particle removing device used,
UV sterilizer and ozone dissolver are as follows.
You. Ozone decomposer: activated carbon tower Water flow SV = 50 hours-1 Particle removing device: Security filter (pore diameter 1 μm) UV sterilizer: Device that irradiates ultraviolet rays with a wavelength of 253.7 nm Residence time: 6 seconds Ozone dissolving device: Ozone dissolving device that adds ozone intermittently
【００３２】オゾン溶解装置へは紫外線殺菌装置の流出
水の２５％を導入し、残部は直接缶検査プロセスに循環
した。また、オゾン溶解装置では、夏季はＯＮ時間３０
分、ＯＦＦ時間６０分とし、冬季はＯＮ時間１０分、Ｏ
ＦＦ時間１２０分とし、オゾン濃度計の測定値が夏季は
０．５〜１．０ｐｐｍ、冬季は０．１〜０．５ｐｐｍと
なるようにオゾン発生器への空気供給量を制御した。The ozone dissolution apparatus was introduced with 25% of the effluent of the UV sterilizer, and the remainder was directly circulated to the can inspection process. In the ozone dissolving apparatus, the ON time is 30 in summer.
Minutes, OFF time 60 minutes, ON time 10 minutes, O
The air supply amount to the ozone generator was controlled such that the FF time was 120 minutes and the measured value of the ozone concentration meter was 0.5 to 1.0 ppm in summer and 0.1 to 0.5 ppm in winter.
【００３３】その結果、年間を通して、循環系内の生菌
数を１０個／Ｌ以下に抑えることができた。As a result, the number of viable bacteria in the circulatory system could be suppressed to 10 / L or less throughout the year.
【００３４】また、缶検査プロセスからの回収水の比抵
抗値１．０ＭΩ・ｃｍに変化はなく、殺菌により比抵抗
値に影響を及ぼすことなく、缶検査プロセスに循環する
ことができた。Further, the specific resistance of the recovered water from the can inspection process did not change to 1.0 MΩ · cm, and the water could be circulated to the can inspection process without affecting the specific resistance by sterilization.
【００３５】比較例１ 実施例１において、活性炭塔を設けなかったこと以外は
同様にして、殺菌循環を行ったところ、回収水中に含ま
れるオゾンが紫外線殺菌装置で分解、イオン化されるこ
とにより比抵抗値が０．５〜１．０ＭΩ・ｃｍに変化し
た。なお、循環系内の生菌数は１０個／Ｌ以下で殺菌効
果は実施例１と同様であった。Comparative Example 1 In Example 1, sterilization and circulation were carried out in the same manner except that no activated carbon tower was provided. The ozone contained in the recovered water was decomposed and ionized by an ultraviolet sterilization apparatus, resulting in a specific ratio. The resistance value changed to 0.5 to 1.0 MΩ · cm. The number of viable bacteria in the circulation system was 10 / L or less, and the bactericidal effect was the same as in Example 1.
【００３６】比較例２ 実施例１において、オゾン溶解装置を設けなかったこと
以外は同様にして殺菌循環を行ったところ、回収水の比
抵抗に殆ど変化はなかったが、紫外線殺菌装置以降の循
環配管内で微生物が増殖して生菌数１０３個／Ｌ以上と
なり、良好な殺菌効果を得ることができなかった。Comparative Example 2 When sterilization and circulation were performed in the same manner as in Example 1 except that the ozone dissolving device was not provided, there was almost no change in the specific resistance of the recovered water. the microorganism becomes to viable cell number 10 3 / L or more growth in the piping, it was not possible to obtain a satisfactory sterilizing effect.
【００３７】比較例３ 実施例１において紫外線殺菌装置を設けなかったこと以
外は同様にして殺菌循環を行ったところ、生菌数が１０
〜１０３個／Ｌと変動があった。Comparative Example 3 When sterilization and circulation were carried out in the same manner as in Example 1 except that no ultraviolet sterilizer was provided, the viable cell count was 10
There has been a change and to 10 3 / L.
【００３８】[0038]
【発明の効果】以上詳述した通り、本発明の比抵抗調整
水殺菌装置によれば、比抵抗調整水の回収、循環系にお
いて、回収水の比抵抗値に影響を及ぼすことなく、系内
を効果的に殺菌することができる。As described above in detail, according to the specific resistance adjusted water disinfection apparatus of the present invention, in the recovery and circulation system of the specific resistance adjusted water, the specific resistance value of the recovered water is not affected in the system. Can be effectively sterilized.
【図１】本発明の比抵抗調整水殺菌装置の実施の形態を
示す系統図である。FIG. 1 is a system diagram showing an embodiment of a specific resistance adjusting water sterilizer of the present invention.
１ オゾン分解装置 ２ 微粒子除去装置 ３ 紫外線殺菌装置 ４ オゾン溶解装置 ５ オゾン濃度計 １０ 缶検査プロセス DESCRIPTION OF SYMBOLS 1 Ozone decomposition apparatus 2 Particle removal apparatus 3 Ultraviolet sterilization apparatus 4 Ozone dissolution apparatus 5 Ozone concentration meter 10 Can inspection process
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０２Ｆ 1/50 Ｃ０２Ｆ 1/50 ５６０Ｚ 1/28 ＺＡＢ 1/28 ＺＡＢＦ 1/32 1/32 1/70 1/70 Ｚ 1/78 1/78 Ｆターム(参考） 4D024 AA04 AB04 BA02 BB01 BC01 CA01 DB10 DB24 4D037 AA13 AB01 BA18 CA01 CA09 CA11 4D050 AA13 AB07 AB32 BB02 BD06 CA06 CA07 Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) C02F 1/50 C02F 1/50 560Z 1/28 ZAB 1/28 ZABF 1/32 1/32 1/70 1/70 Z 1/78 1/78 F term (reference) 4D024 AA04 AB04 BA02 BB01 BC01 CA01 DB10 DB24 4D037 AA13 AB01 BA18 CA01 CA09 CA11 4D050 AA13 AB07 AB32 BB02 BD06 CA06 CA07
Claims (3)
であって、 比抵抗値が調整された被処理水中のオゾンを分解するた
めのオゾン分解装置と、 該オゾン分解装置でオゾン分解処理された被処理水に紫
外線を照射して殺菌する紫外線殺菌手段と、 該紫外線殺菌手段で殺菌された被処理水にオゾンを添加
するオゾン添加手段と、を備えたことを特徴とする比抵
抗調整水殺菌装置。An apparatus for disinfecting water whose specific resistance value has been adjusted, comprising: an ozone decomposing apparatus for decomposing ozone in water to be treated whose specific resistance value has been adjusted; A specific resistance, comprising: an ultraviolet sterilizing means for irradiating the treated water with ultraviolet rays to sterilize the treated water; and an ozone adding means for adding ozone to the treated water sterilized by the ultraviolet sterilizing means. Conditioned water sterilizer.
菌装置の処理水のオゾン濃度を計測するオゾン濃度計測
手段と該オゾン濃度計測手段で得られるオゾン濃度に基
き、前記オゾン添加手段におけるオゾン添加量を制御す
る制御手段とを備えたことを特徴とする比抵抗調整水殺
菌装置。2. The ozone adding means according to claim 1, wherein the ozone concentration measuring means for measuring the ozone concentration of the treated water of the specific resistance adjusting water sterilizing apparatus and the ozone concentration obtained by the ozone concentration measuring means. And a control means for controlling the amount of addition.
加手段が、被処理水にオゾンを間欠的に添加するオゾン
添加手段であり、該間欠添加時間を設定する間欠添加時
間設定器を備えたことを特徴とする比抵抗調整水殺菌装
置。3. The ozone adding means according to claim 1, wherein the ozone adding means is an ozone adding means for intermittently adding ozone to the water to be treated, and comprises an intermittent addition time setting device for setting the intermittent addition time. A specific resistance adjusting water sterilizer characterized by the above-mentioned.
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|---|---|---|---|
| JP2001151172A JP4581291B2 (en) | 2001-05-21 | 2001-05-21 | Specific resistance adjustment water sterilizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012096187A (en) * | 2010-11-04 | 2012-05-24 | Sumitomo Metal Mining Co Ltd | Ultrapure water production system, method for washing the same, and method for producing ultrapure water using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716582A (en) * | 1993-06-30 | 1995-01-20 | Permelec Electrode Ltd | Process for ozone water treatment and device therefor |
| JPH10156168A (en) * | 1996-12-03 | 1998-06-16 | Mitsubishi Electric Corp | Intermittent ozone feeder |
| JPH1157417A (en) * | 1997-08-20 | 1999-03-02 | Asahi Chem Ind Co Ltd | Manufacturing of ultrapure water |
-
2001
- 2001-05-21 JP JP2001151172A patent/JP4581291B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716582A (en) * | 1993-06-30 | 1995-01-20 | Permelec Electrode Ltd | Process for ozone water treatment and device therefor |
| JPH10156168A (en) * | 1996-12-03 | 1998-06-16 | Mitsubishi Electric Corp | Intermittent ozone feeder |
| JPH1157417A (en) * | 1997-08-20 | 1999-03-02 | Asahi Chem Ind Co Ltd | Manufacturing of ultrapure water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012096187A (en) * | 2010-11-04 | 2012-05-24 | Sumitomo Metal Mining Co Ltd | Ultrapure water production system, method for washing the same, and method for producing ultrapure water using the same |
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