JPS63100995A - Sterilizing method by ultraviolet ray - Google Patents
Sterilizing method by ultraviolet rayInfo
- Publication number
- JPS63100995A JPS63100995A JP24537986A JP24537986A JPS63100995A JP S63100995 A JPS63100995 A JP S63100995A JP 24537986 A JP24537986 A JP 24537986A JP 24537986 A JP24537986 A JP 24537986A JP S63100995 A JPS63100995 A JP S63100995A
- Authority
- JP
- Japan
- Prior art keywords
- bacteria
- ultraviolet
- liquid
- water
- ultraviolet rays
- 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.)
- Granted
Links
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 15
- 241000894006 Bacteria Species 0.000 claims abstract description 30
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 30
- 238000010008 shearing Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 230000003247 decreasing effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 34
- 210000004027 cell Anatomy 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 238000007796 conventional method Methods 0.000 description 6
- 230000001678 irradiating effect Effects 0.000 description 6
- 210000000170 cell membrane Anatomy 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 230000004543 DNA replication Effects 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000012136 culture method Methods 0.000 description 1
- 238000006471 dimerization reaction Methods 0.000 description 1
- 230000002070 germicidal effect Effects 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008263 repair mechanism Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、紫外線を照射して液体を殺菌する紫外線殺菌
方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in an ultraviolet sterilization method for sterilizing a liquid by irradiating it with ultraviolet rays.
（従来の技術〕
紫外線を照射して例えば水を殺菌する紫外線殺菌方法は
古くより実用化されており、水中のバクテリアが殺菌線
と呼ばれる波長２５４ｎｍ付近の紫外線で死滅すること
は周知のことである。しかしながら水に紫外線を照射す
る場合、紫外線が水口体に吸収されるため紫外線ランプ
から離れるにしたがって紫外線の照射強度が極端に小さ
くなる欠点もあった。もちろん水中の懸濁物質やスケー
ル成分が紫外線ランプ表面（正確には紫外線ランプと水
を隔離する石英管等のジャケット表面）に付着すること
も大きな問題であった。このため、従来は紫外線ランプ
付近の水を乱流状態にし水中のバクテリアが均一に紫外
線を照射されるように考慮するのが一般的であった０例
えば実開昭６１−１５０９２号公報に示されるように紫
外線殺菌装置にインペラを内蔵させ、紫外線ランプ付近
の水を乱流状態にするものがある。(Prior art) Ultraviolet sterilization methods that sterilize water by irradiating it with ultraviolet light have been in practical use for a long time, and it is well known that bacteria in water are killed by ultraviolet light with a wavelength of around 254 nm, which is called germicidal radiation. However, when irradiating water with ultraviolet rays, the UV rays are absorbed by the water body, so the irradiation intensity of the ultraviolet rays becomes extremely small as the distance from the ultraviolet lamp increases.Of course, suspended solids and scale components in the water are exposed to ultraviolet rays. Adhering to the lamp surface (more precisely, the jacket surface of the quartz tube that separates the UV lamp from the water) was also a major problem.For this reason, conventional methods have been to create a turbulent flow in the water near the UV lamp to prevent bacteria in the water. It was common practice to consider uniform irradiation with ultraviolet rays. For example, as shown in Japanese Utility Model Application No. 61-15092, an impeller is built into an ultraviolet sterilizer to create a turbulent flow of water near the ultraviolet lamp. There is something that makes it a state.
またＱ、 ′ＥＪ９Ｊ質やスケール成分が石英製ジャケ
ット表面に付若するのを防止するため、ワイパー等を内
蔵させる場合もある。更には例えば特開昭６０−５８２
９１号公報に示されるように超音波振動子を殺菌塔内に
内蔵させる場合もあり、また実開昭６０−１７５２４４
号公報では前記特開昭６０−５８２９１号公報と同様に
超音波を殺菌）＝内に内蔵させ、超音波によるバクテリ
アのフロックの破壊／分散効果も期待できるとするもの
もある。In addition, a wiper or the like may be installed in order to prevent EJ9J quality and scale components from adhering to the surface of the quartz jacket. Furthermore, for example, JP-A-60-582
In some cases, an ultrasonic vibrator is built into the sterilization tower as shown in Publication No. 91, and in Utility Model Application No. 60-175244.
Similar to the above-mentioned Japanese Unexamined Patent Application Publication No. 60-58291, there is also a product that incorporates ultrasonic waves inside the sterilizer (sterilization), and that the ultrasonic waves can also be expected to have the effect of destroying/dispersing bacterial flocs.
いずれの場合でも、従来の紫外線殺菌方法及びその装置
において考慮されている点は、液中のバクテリアに均一
に紫外線を照射する点のみである。In either case, the only consideration in conventional ultraviolet sterilization methods and devices is that the bacteria in the liquid be uniformly irradiated with ultraviolet rays.
即ち紫外線を均一に照射せしめる手段として紫外線照射
部の液を乱流にしたり、超音波で振動を与えることによ
りバクテリア等を分散させることにあった。That is, as a means of uniformly irradiating ultraviolet rays, bacteria and the like have been dispersed by creating a turbulent flow in the liquid in the ultraviolet irradiating section or by applying vibrations using ultrasonic waves.
従来の紫外線殺菌方法特に流水中のバクテリアを殺菌す
る場合、その殺菌効果が一定しないという問題点があっ
た。しかも、紫外線照射線量を通常５００００μＷ−８
ｅｃ／ｃＩＡ以上としているにもかかわらず、殺菌率が
５０％以下の場合もある。−船釣に紫外線による殺菌率
は紫外線照射線量だけでは推定できず殺菌率を常時９５
％以上維持することはなかなか困難である場合が多い。Conventional ultraviolet sterilization methods, especially when killing bacteria in running water, have had a problem in that the sterilization effect is not constant. Moreover, the UV irradiation dose is usually 50,000μW-8
In some cases, the sterilization rate is less than 50% despite the ec/cIA or higher. -The sterilization rate of UV rays for boat fishing cannot be estimated by the UV irradiation dose alone, and the sterilization rate is always 95%.
% or more is often difficult to maintain.
以上のごとく紫外線照射による水中のバクテリアの殺菌
は、簡便であると言う利点があるもののその殺菌効果は
充分満足できるものではなく、場合によってはほとんど
殺菌効果が期待できないケースもあった。As described above, although sterilization of bacteria in water by ultraviolet irradiation has the advantage of being simple, its sterilization effect is not fully satisfactory, and in some cases, almost no sterilization effect can be expected.
本発明は、このような問題点を解決し、液中に浮遊して
いるバクテリアを容易にかつ確実に殺菌することができ
る紫外線殺菌方法を提供することを目的とするものであ
る。The object of the present invention is to solve these problems and provide an ultraviolet sterilization method that can easily and reliably sterilize bacteria floating in a liquid.
本発明者らは上記の問題点を解決すべく、保守管理が容
易で薬品を用いることなく紫外線による殺菌効果を高め
るべく検討を行い、紫外線照射と剪断力にシるバクテリ
アに対する物理的ストレスを併用することが最も効果が
高いことを知見するに至った。即ち、例えばホモジナイ
ザーに代表される剪断力を与える手段を用いた場合、剪
断力だけでは殺菌効果は低く実用化の点で困難さがある
が、剪断力と紫外線照射を併用すると著しく殺菌効果が
向上することを見い出して本発明を完成したものである
。In order to solve the above problems, the present inventors investigated ways to increase the sterilization effect of ultraviolet rays without using chemicals, which is easy to maintain and manage, and combined use of ultraviolet irradiation and physical stress on bacteria caused by shearing force. I have come to find out that doing so is most effective. In other words, when using a means to apply shearing force, such as a homogenizer, shearing force alone has a low sterilizing effect and is difficult to put into practical use, but when shearing force and ultraviolet irradiation are combined, the sterilizing effect is significantly improved. The present invention was completed by discovering that.
本発明は、液体に紫外線を照射して液体中のバクテリア
を殺菌する紫外線殺菌方法において、バクテリアに剪断
力による物理的ストレスを与えて細胞を損傷させた後に
紫外線照射することを特徴とする紫外線殺菌方法を提供
するものである。The present invention provides an ultraviolet sterilization method in which a liquid is irradiated with ultraviolet rays to sterilize bacteria in the liquid. The present invention provides a method.
本発明の作用を、その一実施態様を示す第１図に基いて
説明すれば、被処理液（以下「原水」と称す）を原水五
人管１から剪断装置２に４大して原水中のバクテリアに
剪断力を与えて物理的ストレスを与えることにより細胞
を損傷させた後、紫外線殺菌装置３に導いて紫外線照射
による殺菌処理をし、殺菌された処理水を処理水導出管
４から系外に取り出ずものである。The operation of the present invention will be explained based on FIG. 1 showing one embodiment of the present invention. The liquid to be treated (hereinafter referred to as "raw water") is transferred from a raw water pipe 1 to a shearing device 2 to remove bacteria in the raw water. After damaging the cells by applying shear force and physical stress, the cells are led to an ultraviolet sterilizer 3 where they are sterilized by ultraviolet irradiation, and the sterilized treated water is discharged from the system through a treated water outlet pipe 4. It's a must-have.
剪断装置２において剪断力を与える手段としては種々あ
るが、高圧力で液体を微小な間隙から積出させるもの（
例えば圧力式ホモジナイザー）、高速攪拌によるもの（
例えばホモミキサー）、遠心力による摩擦衝突を利用す
るもの（例えばコロイドミル）等を用いるのが便利であ
る。ここで用いる手段によってその条件は異なるが、例
えば高圧力を利用するものでは圧力５〜１０００ ｋｇ
ｆ ／ ｃｒＡ、線速度５ｍ／ｓｅｃ以上、好ましくは
１０ｍ／ｓｅｃ以上のもの、また回転力を用いるもので
は回転数が５００〜３００００ｒｐＩ１１、周速度が５
ｍ ／ ５ｅ（Ｈ以上、好ましくは１０ｍ／ｓｅｃ以
上のものが用いられろ。手段として必要な条件は密閉性
が高（、適度な剪断力を発生させることができるもので
あれば良（、紫外線殺菌装置３の容量や形状に合わせて
剪断手段を単独或は二つ以上組合わせて適時選択すれば
良い。そして剪断力を与える手段をできる■り紫外線殺
菌装置３の流入側に設置すれば良い。There are various means for applying shearing force in the shearing device 2, but there is one that discharges liquid from a minute gap under high pressure (
For example, pressure homogenizer), high-speed stirring (
For example, it is convenient to use a homo mixer) or one that utilizes frictional collision due to centrifugal force (for example, a colloid mill). The conditions differ depending on the means used here, but for example, when using high pressure, the pressure is 5 to 1000 kg.
f/crA, linear velocity of 5 m/sec or more, preferably 10 m/sec or more, and for those that use rotational force, the rotational speed is 500 to 30,000 rpI11, and the peripheral speed is 5
m/5e (H or higher, preferably 10 m/sec or higher. Depending on the capacity and shape of the sterilizer 3, the shearing means alone or in combination of two or more may be appropriately selected.Then, the means for applying shearing force may be installed on the inflow side of the ultraviolet sterilizer 3, if possible. .
また、原水の水温を低くすることにより、水の粘度を高
めて剪断力を増力■させることで、更に殺菌効果を裔め
ることができる。In addition, by lowering the temperature of the raw water, the viscosity of the water is increased and the shearing force is increased, which further enhances the sterilizing effect.
以上のごとく、本発明は紫外線照射により液中のバクテ
リアを殺菌するに際し、従来のように単に水を乱流にし
たり、超音波を用いてバクテリアを分散させることで紫
外線のバクテリアに対する照射強度を均一化するという
ものではない。即ち、本発明では紫外線を照射する前に
まず剪断力による物理的ストレスをバクテリアに与えて
細胞を損傷させることが重要なのであり分散化させる手
段とは全く別の技術である。As described above, when the present invention sterilizes bacteria in a liquid by ultraviolet irradiation, the intensity of the ultraviolet rays irradiated on the bacteria can be made uniform by simply making the water turbulent as in the past, or by using ultrasonic waves to disperse the bacteria. It is not about becoming. That is, in the present invention, it is important to damage the cells by applying physical stress to the bacteria by shearing force before irradiating them with ultraviolet rays, and this is a completely different technique from the method of dispersing bacteria.
紫外線の殺菌作用は細胞内のＤＮＡに紫外線が直接作用
しＤＮＡに異常を起させることにある。The bactericidal effect of ultraviolet rays lies in the fact that ultraviolet rays act directly on DNA within cells, causing abnormalities in the DNA.
更に詳しく言えば紫外線光量子がＤＮＡに吸収されると
例えばピリミジンの２量体化が起り、ＤＮＡの複製及び
転写の機能が阻害され細胞は死滅していくからである。More specifically, when ultraviolet photons are absorbed by DNA, dimerization of, for example, pyrimidine occurs, which inhibits DNA replication and transcription functions and causes cells to die.
ところで紫外線照射によって起こったＤＮＡの損傷に対
しては、修復機構が働き元の姿に戻す機能をバクテリア
が持っていることも周知のことである。更にはバクテリ
アの種類、生理的状態、細胞膜の違い、胞子の有無、菌
体外壁へのスライム等の保護物質の形成の有無により、
紫外線の必要照射線量は当然界なってくるものである。By the way, it is well known that bacteria have the ability to restore DNA to its original state through a repair mechanism when damaged by ultraviolet irradiation. Furthermore, depending on the type of bacteria, physiological state, differences in cell membrane, presence or absence of spores, and presence or absence of protective substances such as slime on the outer wall of the bacteria,
Naturally, the required radiation dose of ultraviolet rays varies.
これは紫外線による殺菌が、たとえ分散化する手段を加
味したとしても、必ずしも１００％の殺菌率を期待でき
るものでないことを示唆している。This suggests that sterilization by ultraviolet rays cannot necessarily be expected to achieve a 100% sterilization rate, even if a means of dispersion is taken into account.
また剪断力による物理的ストレスは主に細胞壁、細胞膜
に損傷を与えるものである。その損傷の程度によっては
、細胞内物質が細胞外に流出し細胞は死に至る場合も考
えられる。In addition, physical stress caused by shear force mainly damages cell walls and cell membranes. Depending on the degree of damage, intracellular substances may flow out of the cell and the cell may die.
ここで本発明の作用を更に詳しく説明すれば、剪断力に
よる物理的ストレスを与えることで、まず細胞を形成し
ている細胞壁、細胞膜を損傷させその直後に紫外線によ
って細胞内のＤＮＡに異常を起させるものであり、バク
テリアの異なる部位に損傷を与えることができるもので
ある。これは先に述べたように紫外線のみではバクテリ
アは修復機能により回復する恐れがあるが、細胞壁、細
胞膜に損傷を受けた細胞には紫外線の相乗効果が更に大
きく寄与するため、完全な殺菌が可能となるのである。To explain the action of the present invention in more detail, first, by applying physical stress by shearing force, the cell wall and cell membrane that form the cell are damaged, and immediately after that, ultraviolet rays cause abnormalities in the DNA inside the cell. and can damage different parts of the bacteria. This is because, as mentioned earlier, UV rays alone may cause bacteria to recover due to their repair function, but the synergistic effect of UV rays contributes even more to cells whose cell walls and cell membranes have been damaged, making it possible to completely sterilize them. It becomes.
実施例１
本発明の実験装置の概要は第２図に示すように、原水タ
ンク５中の原水をポンプ６にてホモジナイザー７を配備
した剪断装置２に導いて、剪断力を与えた後、紫外線ラ
ンプ及び石英ジャケット８付の紫外線殺菌装置３に導き
、殺菌処理後の処理水を処理水導出管４から取り出すよ
うにしたものである。Embodiment 1 As shown in FIG. 2, the outline of the experimental apparatus of the present invention is as shown in FIG. The treated water is led to an ultraviolet sterilizer 3 equipped with a lamp and a quartz jacket 8, and the treated water after sterilization is taken out from a treated water outlet pipe 4.
そして、原水として水道水を活性炭に通水し残留塩素を
除去した水２００ｊ！’を約１週間室温で放置したもの
を使用し、剪断装置２では攪拌式ホモジナイザーにて回
転数５０００ｒｐｍで剪断力を与え、紫外線殺菌装置３
では紫外線ランプとして消費電力３２Ｗの低圧水銀ラン
プを用い水に対する紫外線照射線量を約４８０００μＷ
−ｓｓｃ／−とした。And 200j of raw water made by passing tap water through activated carbon to remove residual chlorine! ' was left at room temperature for about a week, and in shearing device 2, shearing force was applied using a stirring homogenizer at a rotation speed of 5000 rpm, and ultraviolet sterilization device 3
In this case, a low-pressure mercury lamp with a power consumption of 32 W is used as the UV lamp, and the UV irradiation dose to water is approximately 48,000 μW.
-ssc/-.
一方、対照例として、第３図に示すように剪断装置２を
省略し、他は前記と同一条件として従来法とした。On the other hand, as a comparative example, as shown in FIG. 3, the shearing device 2 was omitted, and the other conditions were the same as those described above, and a conventional method was used.
これらの結果は表１に示す通りであった。なお、バクテ
リアの計測はＡ３７Ｍメンブランフィルタ培養法で行っ
た。These results were as shown in Table 1. Note that bacteria were measured using the A37M membrane filter culture method.
表 １
表１から明らかなように、従来法では経過時間毎の殺菌
率が変動し、しかも殺菌率は低い。しかるに本発明では
ほぼ１００％の殺菌率となっている。Table 1 As is clear from Table 1, in the conventional method, the sterilization rate varies depending on the elapsed time, and the sterilization rate is low. However, in the present invention, the sterilization rate is almost 100%.
実施例２ 更に超音波を併用した従来例を示す。Example 2 Furthermore, a conventional example in which ultrasonic waves are also used will be shown.
実施例１と同様の原水及び低圧水銀ランプを用い、第４
図に示すように、紫外線殺菌装置３の底部に超音波発振
子９を設けた。この超音波発振子９は出力１５０Ｗ、周
波数２０ＫＨｚのものであり、その駆動装置１０に接続
されている。紫外線照射ｋｌを実施例１と同一条件とし
た結果は表２に示す通りであった。Using the same raw water and low-pressure mercury lamp as in Example 1, the fourth
As shown in the figure, an ultrasonic oscillator 9 was provided at the bottom of the ultraviolet sterilizer 3. This ultrasonic oscillator 9 has an output of 150 W and a frequency of 20 KHz, and is connected to a driving device 10. Table 2 shows the results obtained under the same ultraviolet irradiation conditions as in Example 1.
表 ２
表２より、超音波を併用した従来法は、全く攪拌等を行
わない従来法（実施例１、表１の従来法参照）と比較し
て、はとんど効果の有意差は認められなかった。この主
な理由は、超音波によるバクテリアに対する分散効果は
、極めて短時間で発現するものではないことによる。即
ち、通常バクテリアの分散あるいはフロック破壊を行う
ためには数分程度は必要であるが、紫外線殺菌装置３に
おける滞留時間は数秒程度であり、超音波を併用しても
その効果が期待できる範ちゅうにないことは明らかであ
る。Table 2 From Table 2, there is no significant difference in the effectiveness of the conventional method that uses ultrasonic waves, compared to the conventional method that does not involve stirring at all (see Example 1 and the conventional method in Table 1). I couldn't. The main reason for this is that the dispersion effect of ultrasonic waves on bacteria does not occur in an extremely short period of time. In other words, although it normally takes several minutes to disperse bacteria or destroy flocs, the residence time in the ultraviolet sterilizer 3 is only a few seconds, and the effect can be expected even if ultrasonic waves are used in combination. It is clear that there is no such thing.
以上述べたところからも明らかなように、本発明は紫外
線照射を行う直前に液体中のバクテリアに剪断力による
物理的ストレスを与えて細胞を損傷させることにより、
紫外線の殺菌を著しく高める効果があり、容易かつ完全
な殺菌を可能とするものである。As is clear from the above, the present invention applies physical stress due to shear force to bacteria in a liquid immediately before UV irradiation, thereby damaging the cells.
It has the effect of significantly increasing the sterilization of ultraviolet rays, and enables easy and complete sterilization.
第１図は本発明の一実施態様を示す系統説明図、第２図
は本発明の実験装置の概要図、第３図及び第４図は従来
例の実験装置の概要図である。
１・・・原水轟入管、２・・・剪断装置、３・・・紫外
線殺菌装置、４・・・処理水導出管、５・・・原水タン
ク、６・・・ポンプ、７・・・ホモジナイザー、８・・
・紫外線ランプ及び石英ジャケット、９・・・超音波発
振子、ＩＯ・・・駆動装置。FIG. 1 is a system explanatory diagram showing one embodiment of the present invention, FIG. 2 is a schematic diagram of an experimental apparatus of the present invention, and FIGS. 3 and 4 are schematic diagrams of conventional experimental apparatus. 1... Raw water inlet pipe, 2... Shearing device, 3... Ultraviolet sterilizer, 4... Treated water outlet pipe, 5... Raw water tank, 6... Pump, 7... Homogenizer , 8...
- Ultraviolet lamp and quartz jacket, 9... Ultrasonic oscillator, IO... Drive device.
Claims (3)
菌する紫外線殺菌方法において、バクテリアに剪断力に
よる物理的ストレスを与えて細胞を損傷させた後に紫外
線照射することを特徴とする紫外線殺菌方法。(1) An ultraviolet sterilization method in which a liquid is irradiated with ultraviolet rays to sterilize bacteria in the liquid, and the ultraviolet sterilization method is characterized in that the ultraviolet rays are applied after applying physical stress to the bacteria by shearing force to damage the cells. .
与える手段が、液体を高圧力で微小間隙から噴出させる
もの、液体を高速撹拌するもの、もしくは遠心力による
摩擦衝突を用いるものである特許請求の範囲第１項記載
の紫外線殺菌方法。(2) The method of applying physical stress to the bacteria by shearing force is to eject liquid from a minute gap under high pressure, to stir the liquid at high speed, or to use frictional collision caused by centrifugal force. The ultraviolet sterilization method according to scope 1.
るものである特許請求の範囲第１項又は第２項記載の紫
外線殺菌方法。(3) The ultraviolet sterilization method according to claim 1 or 2, wherein the liquid has a viscosity increased by decreasing the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24537986A JPS63100995A (en) | 1986-10-17 | 1986-10-17 | Sterilizing method by ultraviolet ray |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24537986A JPS63100995A (en) | 1986-10-17 | 1986-10-17 | Sterilizing method by ultraviolet ray |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63100995A true JPS63100995A (en) | 1988-05-06 |
| JPH0376195B2 JPH0376195B2 (en) | 1991-12-04 |
Family
ID=17132783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24537986A Granted JPS63100995A (en) | 1986-10-17 | 1986-10-17 | Sterilizing method by ultraviolet ray |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63100995A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2336289A (en) * | 1997-01-08 | 1999-10-20 | Tetra Laval Holdings & Finance | A method of continuously sterilizing pumpable food by means of high pressure |
| WO2005077833A1 (en) * | 2004-02-13 | 2005-08-25 | Mitsubishi Heavy Industries, Ltd. | Method of liquid detoxification and apparatus therefor |
| WO2006088156A1 (en) * | 2005-02-18 | 2006-08-24 | Katayama Chemical, Inc. | Method of treating ship ballast water |
| WO2006121132A1 (en) * | 2005-05-11 | 2006-11-16 | The Japan Association Of Marine Safety | Apparatus for treating ship ballast water |
| WO2014208386A1 (en) * | 2013-06-28 | 2014-12-31 | 三井製糖株式会社 | Method for producing sugar-crystal-containing fluid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4949451A (en) * | 1972-09-14 | 1974-05-14 |
-
1986
- 1986-10-17 JP JP24537986A patent/JPS63100995A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4949451A (en) * | 1972-09-14 | 1974-05-14 |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2336289A (en) * | 1997-01-08 | 1999-10-20 | Tetra Laval Holdings & Finance | A method of continuously sterilizing pumpable food by means of high pressure |
| GB2336289B (en) * | 1997-01-08 | 2001-03-14 | Tetra Laval Holdings & Finance | A method of continuously sterilizing pumpable food by means of high pressure |
| WO2005077833A1 (en) * | 2004-02-13 | 2005-08-25 | Mitsubishi Heavy Industries, Ltd. | Method of liquid detoxification and apparatus therefor |
| CN100393632C (en) * | 2004-02-13 | 2008-06-11 | 三菱重工业株式会社 | Method of liquid detoxification and apparatus therefor |
| WO2006088156A1 (en) * | 2005-02-18 | 2006-08-24 | Katayama Chemical, Inc. | Method of treating ship ballast water |
| US8123958B2 (en) | 2005-02-18 | 2012-02-28 | Katayama Chemical, Inc. | Method for treating ship ballast water |
| WO2006121132A1 (en) * | 2005-05-11 | 2006-11-16 | The Japan Association Of Marine Safety | Apparatus for treating ship ballast water |
| US7837874B2 (en) | 2005-05-11 | 2010-11-23 | The Japan Association Of Marine Safety | Treatment system for ships' ballast water |
| WO2014208386A1 (en) * | 2013-06-28 | 2014-12-31 | 三井製糖株式会社 | Method for producing sugar-crystal-containing fluid |
| JP2015008668A (en) * | 2013-06-28 | 2015-01-19 | 三井製糖株式会社 | Method for producing sugar crystal-containing liquid |
| US9670555B2 (en) | 2013-06-28 | 2017-06-06 | Mitsui Sugar Co., Ltd. | Method for producing a sugar crystal-containing liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0376195B2 (en) | 1991-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7718073B2 (en) | Device and process for treating a liquid medium | |
| Matafonova et al. | Review on low-and high-frequency sonolytic, sonophotolytic and sonophotochemical processes for inactivating pathogenic microorganisms in aqueous media | |
| Pitt et al. | Ultrasound increases the rate of bacterial cell growth | |
| Nejad et al. | Acute effects of sono-activated photocatalytic titanium dioxide nanoparticles on oral squamous cell carcinoma | |
| US8080165B2 (en) | Systems and methods for disinfection | |
| US20100090124A1 (en) | Method and Apparatus for Irradiating Fluids | |
| CA2576013C (en) | Method and device for subaqueous ultrasonic catastrophic irradiation of living tissue | |
| US4017735A (en) | Ultraviolet liquid sterilizer | |
| US20150359247A1 (en) | Wine processing and liquid processing apparatus and methods | |
| JPS63100995A (en) | Sterilizing method by ultraviolet ray | |
| JP2000185280A (en) | Ultraviolet sterilizing method and apparatus | |
| JP2907814B1 (en) | Photocatalytic reactor | |
| JP6058262B2 (en) | UV treatment equipment | |
| JPS61263691A (en) | Water treating apparatus | |
| JPH11285691A (en) | Waste water treating device | |
| KR101779119B1 (en) | Ballast water treatment system and method | |
| CN109879502A (en) | One kind ultraviolet-chlorination-intensified by ultrasonic wave sterilization pretreatment technique and device | |
| JPH11300345A (en) | Decomposing method of organic chlorine compound such as dioxins or the like in reclamation leachate | |
| JPH11226567A (en) | Bath water cleaning and circulating device | |
| JPH11275988A (en) | Water-treating device for water culture of plant and culture | |
| KR20180029587A (en) | Non-powered micro-nono bubble generator | |
| LU505018B1 (en) | METHOD AND DEVICE FOR INACTIVATING PATHOGENIC MICROORGANISMS IN WATER BY ACOUSTIC WAVE ENHANCED PERACETIC ACID | |
| CN214693748U (en) | Rural sewage treatment degassing unit of incessant photocatalysis | |
| RU93034334A (en) | DEVICE FOR UV RADIATION OF LIQUIDS | |
| JPS5821559B2 (en) | Sterilization method and equipment |