JPH05237479A - Sterilization of legionellaceae - Google Patents
Sterilization of legionellaceaeInfo
- Publication number
- JPH05237479A JPH05237479A JP7537592A JP7537592A JPH05237479A JP H05237479 A JPH05237479 A JP H05237479A JP 7537592 A JP7537592 A JP 7537592A JP 7537592 A JP7537592 A JP 7537592A JP H05237479 A JPH05237479 A JP H05237479A
- Authority
- JP
- Japan
- Prior art keywords
- high frequency
- electrodes
- water
- legionellaceae
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 14
- 238000004659 sterilization and disinfection Methods 0.000 title abstract description 4
- 241000589246 Legionellaceae Species 0.000 title abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 241000589248 Legionella Species 0.000 claims description 21
- 241000894006 Bacteria Species 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 208000007764 Legionnaires' Disease Diseases 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 241000193830 Bacillus <bacterium> Species 0.000 abstract 3
- 241000304886 Bacilli Species 0.000 abstract 2
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、クーリングタワー等に
繁殖するレジオネラル菌の殺菌方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sterilizing legionnial bacteria that propagate in a cooling tower or the like.
【０００２】[0002]
【従来の技術】従来のレジオネラル菌の電気的殺菌方法
としては、レジオネラル菌が存在する水中に第１，第２
の電極を配置し、これら１，第２の電極に直流電圧を印
加する方法が提案されている。2. Description of the Related Art As a conventional method for electrically sterilizing Legionnaire bacterium, first, second
There is proposed a method in which the electrodes are arranged and a DC voltage is applied to these first and second electrodes.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな直流によるレジオネラル菌の殺菌方法では、直流電
圧の印加当初は効果があるが、時間が経つと効果がなく
なる問題点があった。これは、時間が経つと、電極にレ
ジオネラル菌が付着して電極面を覆ってしまうためであ
る。However, in such a method of sterilizing legionnial bacteria by direct current, there is a problem that the effect is obtained at the initial application of the DC voltage, but the effect disappears with the passage of time. This is because over time, the Legionella bacterium adheres to the electrode and covers the electrode surface.
【０００４】本発明の目的は、電気的な方法でもレジオ
ネラル菌の殺菌効果を持続させることができるレジオネ
ラル菌の殺菌方法を提供することにある。An object of the present invention is to provide a sterilizing method for Legionella bacterium which can maintain the bactericidal effect of Legionella bacterium by an electrical method.
【０００５】[0005]
【課題を達成するための手段】上記の目的を達成する本
発明の手段を説明すると、本発明に係るレジオネラル菌
の殺菌方法は、レジオネラル菌が存在する水中に第１，
第２の電極を配置し、前記第１，第２の電極に交流を印
加して前記レジオネラル菌を殺菌することを特徴とす
る。Means for Achieving the Object To explain the means of the present invention for achieving the above-mentioned object, the sterilizing method of Legionella bacterium according to the present invention is as follows:
A second electrode is arranged, and an alternating current is applied to the first and second electrodes to sterilize the Legioneral bacterium.
【０００６】[0006]
【作用】このようにレジオネラル菌が存在する水中に第
１，第２の電極を配置して、これら電極に交流を印加す
ると、レジオネラル菌を殺菌することができる。In this way, by arranging the first and second electrodes in the water in which the Legionella bacterium is present and applying an alternating current to these electrodes, the Legionella bacterium can be sterilized.
【０００７】特に、第１，第２の電極に交流を印加する
と、一方の極性のとき電極に付着したレジオネラル菌の
死骸等が他方の極性になったとき剥離されるので、レジ
オネラル菌の殺菌効果が時間の経過につれて低下するの
を防止できる。In particular, when an alternating current is applied to the first and second electrodes, the dead body of Legionella bacterium adhering to the electrodes when one polarity is present is peeled off when the other polarity is applied. It is possible to prevent the bactericidal effect from decreasing over time.
【０００８】[0008]
【実施例】以下、本発明の実施例を図を参照して詳細に
説明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【０００９】図１は、本発明の方法を実施するレジオネ
ラル菌殺菌装置の一実施例を示したものである。図にお
いて、１はレジオネラル菌が存在する水２を収容した容
器、３Ａ，３Ｂは水２中に配置した第１，第２の電極、
４は１０Ｖ〜５０Ｖの直流電源、５Ａ，５Ｂは直流電源
４に可変抵抗力を介してそれぞれ接続されていて、該直
流電源４からの直流電圧を高周波の交流に交換して第
１，第２の電極３Ａ，３Ｂに交互に与える第１，第２の
高周波スイッチである。これら第１，第２の高周波スイ
ッチ５Ａ，５Ｂは、トランジスタ７Ａ，８Ａとにより構
成されている。９は第１，第２の電極３Ａ，３Ｂ間に接
続されているコンデンサである。FIG. 1 shows an embodiment of the apparatus for sterilizing legionnial bacteria for carrying out the method of the present invention. In the figure, 1 is a container containing water 2 in which Legionella bacteria are present, 3A and 3B are first and second electrodes arranged in the water 2,
Reference numeral 4 is a DC power source of 10V to 50V, 5A and 5B are respectively connected to the DC power source 4 via a variable resistance force, and the DC voltage from the DC power source 4 is exchanged for high-frequency AC, and first and second The first and second high-frequency switches are alternately applied to the electrodes 3A and 3B. These first and second high frequency switches 5A and 5B are composed of transistors 7A and 8A. Reference numeral 9 is a capacitor connected between the first and second electrodes 3A and 3B.
【００１０】１０は第１，第２の高周波スイッチ５Ａ，
５Ｂに抵抗１１Ａ，１１Ｂを介して高周波の切換指令を
与えるフリップフロップ回路よりなる高周波切換指令回
路、１２は高周波切換指令回路１０に３０ＫＨｚ〜５０
ＫＨｚの高周波信号を与える高周波発振器である。10 is a first and second high frequency switch 5A,
5B is a high frequency switching command circuit including a flip-flop circuit for giving a high frequency switching command via resistors 11A and 11B, and 12 is a high frequency switching command circuit 10 of 30 KHz to 50 kHz.
It is a high frequency oscillator that gives a high frequency signal of KHz.
【００１１】次に、このような装置によるレジオネラル
菌の殺菌方法について説明する。レジオネラル菌が存在
する水２中の第１，第２の電極３Ａ，３Ｂに１０Ｖ〜５
０Ｖの電圧で３０ＫＨｚ〜５０ＫＨｚの高周波の交流を
第１，第２の高周波スイッチ５Ａ，５Ｂの作用で交互に
印加する。このような高周波の交流は、高周波発振器１
２の高周波信号を高周波切換指令回路１０に与え、該高
周波切換指令回路１０から高周波の切換指令を第１，第
２の高周波スイッチ５Ａ，５Ｂに与え、これら第１，第
２の高周波スイッチ５Ａ，５Ｂを高周期でオン，オフ
し、直流電源４からの出力を第１，第２の電極３Ａ，３
Ｂに交互に与えることによる形成する。Next, a method for sterilizing legionnial bacteria using such an apparatus will be described. 10V to 5 are applied to the first and second electrodes 3A and 3B in the water 2 in which the Legionella bacteria are present.
A high frequency alternating current of 30 KHz to 50 KHz with a voltage of 0 V is alternately applied by the action of the first and second high frequency switches 5A and 5B. Such high-frequency alternating current is generated by the high-frequency oscillator 1
The second high frequency signal is given to the high frequency switching command circuit 10, the high frequency switching command is given from the high frequency switching command circuit 10 to the first and second high frequency switches 5A and 5B, and these first and second high frequency switches 5A, 5B is turned on and off at a high cycle, and the output from the DC power supply 4 is supplied to the first and second electrodes 3A, 3
It is formed by alternately giving to B.
【００１２】このとき、第１，第２の電極３Ａ，３Ｂ間
に現れる交流電圧を示すと図２の通りである。これら交
流電圧の波高値は、可変抵抗６により定められる。At this time, the AC voltage appearing between the first and second electrodes 3A and 3B is shown in FIG. The peak value of these AC voltages is determined by the variable resistor 6.
【００１３】このようにレジオネラル菌が存在する水２
中の第１，第２の電極３Ａ，３Ｂに高周波の交流を印加
すると、水２中のレジオネラル菌を死滅させることがで
きる。As described above, water 2 in which Legionella bacteria are present
When a high-frequency alternating current is applied to the first and second electrodes 3A and 3B therein, the Legionella bacterium in the water 2 can be killed.
【００１４】実験例 ４０ＫＨｚ，１０ｐｐＶ以上の高周波の交流を、レジオ
ネラル菌が存在する水２中の第１，第２の電極３Ａ，３
Ｂに印加したところ、レジオネラル菌が死滅することが
確認された。また、長時間実験を続けたところ、第１，
第２の電極３Ａ，３Ｂにはレジオネラル菌が付着したま
まにならず、長時間殺菌効果が接続することが確認され
た。Experimental Example High-frequency alternating current of 40 KHz and 10 ppV or more was applied to the first and second electrodes 3A, 3 in the water 2 in which the Legioneral bacterium exists.
When applied to B, it was confirmed that the Legionella bacterium was killed. Also, after continuing the experiment for a long time,
It was confirmed that the Legionella bacterium did not remain attached to the second electrodes 3A and 3B, and the sterilizing effect was connected for a long time.
【００１５】上記実施例では、第１，第２の電極３Ａ，
３Ｂに高周波の交流を印加した場合について示したが、
５０Ｈｚ〜６０Ｈｚ程度の低周波の交流を印加しても同
様の効果を得ることができる。なお、低周波の交流を印
加した場合には感電し易くなるが、高周波の場合は感電
しない。In the above embodiment, the first and second electrodes 3A,
The case where a high frequency alternating current is applied to 3B has been shown.
The same effect can be obtained by applying an alternating current having a low frequency of about 50 Hz to 60 Hz. It is easy to receive an electric shock when a low frequency alternating current is applied, but no electric shock occurs when a high frequency is applied.
【００１６】図３は、第１，第２の電極３Ａ，３Ｂの配
置構造の他の例を示したものである。即ち、本実施例で
は絶縁基板１３の片面に第１，第２の電極３Ａ，３Ｂを
貼付け固定している。このようにしても電極３Ａ，３Ｂ
の近くの水２中のレジオネラル菌の殺菌を行うことがで
きる。水２を撹拌等することにより、容器１内の全体の
レジオネラル菌を殺菌することができる。FIG. 3 shows another example of the arrangement structure of the first and second electrodes 3A and 3B. That is, in this embodiment, the first and second electrodes 3A and 3B are attached and fixed to one surface of the insulating substrate 13. Even in this way, the electrodes 3A, 3B
The sterilization of Legionella bacteria in water 2 near the can be performed. By stirring the water 2 or the like, the entire Legionella bacterium in the container 1 can be sterilized.
【００１７】[0017]
【発明の効果】以上説明したように本発明に係るレジオ
ネラル菌の殺菌方法では、レジオネラル菌が存在する水
中に第１，第２の電極を配置して、これら電極に交流を
印加するので、該水中のレジオネラル菌を殺菌すること
ができる。また、第１，第２電極に交流を印加すると、
一方の極性のとき電極に付着したレジオネラル菌の死骸
等が他方の極性になったとき剥離されるので、レジオネ
ラル菌の殺菌効果が時間の経過につれて低下するのを防
止することができる。このため保守にも手間がかからな
い利点がある。なお、電極間に高周波の交流を印加した
場合には菌の移動が起らず、電極に死菌が付着しない。As described above, in the sterilization method for legionella bacterium according to the present invention, the first and second electrodes are arranged in the water in which the legionella bacterium is present, and the alternating current is applied to these electrodes. , It is possible to sterilize the Legionella bacteria in the water. Moreover, when an alternating current is applied to the first and second electrodes,
Since the dead body of Legionella bacterium adhered to the electrode when the polarity is one is peeled off when the polarity is the other polarity, it is possible to prevent the bactericidal effect of the Legionella bacterium from decreasing with time. For this reason, there is an advantage that maintenance is not required. When a high-frequency alternating current is applied between the electrodes, bacteria do not move and dead bacteria do not adhere to the electrodes.
【図１】本発明の方法を実施する装置の一例を示す電気
回路図である。FIG. 1 is an electric circuit diagram showing an example of an apparatus for carrying out the method of the present invention.
【図２】図１に示す実施例で、第１，第２の電極に印加
する交流の波形図である。FIG. 2 is a waveform diagram of an alternating current applied to the first and second electrodes in the embodiment shown in FIG.
【図３】本発明で用いる第１，第２の電極の他の例を示
す斜視図である。FIG. 3 is a perspective view showing another example of first and second electrodes used in the present invention.
１ 容器 ２ 水 ３Ａ，３Ｂ 第１，第２の電極 ４ 直流電源 ５Ａ，５Ｂ 第１，第２の高周波スイッチ ６ 可変抵抗 ９ コンデンサ １０ 高周波切換指令回路 １２ 高周波発振器 1 Container 2 Water 3A, 3B 1st, 2nd electrode 4 DC power supply 5A, 5B 1st, 2nd high frequency switch 6 Variable resistance 9 Capacitor 10 High frequency switching command circuit 12 High frequency oscillator
Claims (1)
第２の電極を配置し、前記第１，第２の電極に交流を印
加して前記レジオネラル菌を殺菌することを特徴とする
レジオネラル菌の殺菌方法。1. A first or submerged water in which Legionella is present.
A method for sterilizing legionnial bacterium, comprising disposing a second electrode and applying an alternating current to the first and second electrodes to sterilize the legionnial bacterium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7537592A JPH05237479A (en) | 1992-02-26 | 1992-02-26 | Sterilization of legionellaceae |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7537592A JPH05237479A (en) | 1992-02-26 | 1992-02-26 | Sterilization of legionellaceae |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05237479A true JPH05237479A (en) | 1993-09-17 |
Family
ID=13574398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7537592A Pending JPH05237479A (en) | 1992-02-26 | 1992-02-26 | Sterilization of legionellaceae |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05237479A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0630857A1 (en) * | 1993-06-28 | 1994-12-28 | Hideo Hayakawa | Method of cleaning water and apparatus therefor |
| EP0770039A4 (en) * | 1994-07-08 | 1998-01-28 | Amphion International Limited | Decontamination system with improved components |
| EP1005988A2 (en) | 1998-12-03 | 2000-06-07 | Canon Kabushiki Kaisha | Liquid discharge head, manufacturing method of liquid discharge head, head cartridge, and liquid discharge apparatus |
| JP4761686B2 (en) * | 2000-01-24 | 2011-08-31 | アールイーヴィ２２・アー・ゲー | Water treatment equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63501626A (en) * | 1985-10-01 | 1988-06-23 | セ−フテイ・フア−スト・リミテツド | Water recirculation device and method |
| JPH03157189A (en) * | 1989-11-15 | 1991-07-05 | O C Eng Kk | Method for sterilizing water stored in drinking water supplier |
| JPH03242289A (en) * | 1990-02-16 | 1991-10-29 | O C Eng Kk | Method for sterilizing washing water in local washing device and feed water tank for local washing device |
-
1992
- 1992-02-26 JP JP7537592A patent/JPH05237479A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63501626A (en) * | 1985-10-01 | 1988-06-23 | セ−フテイ・フア−スト・リミテツド | Water recirculation device and method |
| JPH03157189A (en) * | 1989-11-15 | 1991-07-05 | O C Eng Kk | Method for sterilizing water stored in drinking water supplier |
| JPH03242289A (en) * | 1990-02-16 | 1991-10-29 | O C Eng Kk | Method for sterilizing washing water in local washing device and feed water tank for local washing device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0630857A1 (en) * | 1993-06-28 | 1994-12-28 | Hideo Hayakawa | Method of cleaning water and apparatus therefor |
| EP0770039A4 (en) * | 1994-07-08 | 1998-01-28 | Amphion International Limited | Decontamination system with improved components |
| US5915161A (en) * | 1994-07-08 | 1999-06-22 | Amphion International, Limited | Microbe stunning device for a biological decontamination system |
| US5965093A (en) * | 1994-07-08 | 1999-10-12 | Amphion International, Limited | Decontamination system with improved components |
| US5993749A (en) * | 1994-07-08 | 1999-11-30 | Amphion International, Limited | MISE fluid treatment device |
| USRE38130E1 (en) | 1994-07-08 | 2003-06-03 | Amphion International Limited | Biological decontamination system |
| EP1005988A2 (en) | 1998-12-03 | 2000-06-07 | Canon Kabushiki Kaisha | Liquid discharge head, manufacturing method of liquid discharge head, head cartridge, and liquid discharge apparatus |
| JP4761686B2 (en) * | 2000-01-24 | 2011-08-31 | アールイーヴィ２２・アー・ゲー | Water treatment equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6214297B1 (en) | High voltage pulse generator | |
| US4672951A (en) | Method and apparatus for treatment of biological tissue | |
| KR920009272A (en) | Ion Implantation Apparatus and Method | |
| CA2221414A1 (en) | Electrotherapy device | |
| CA2267196A1 (en) | High voltage pulsed electric field treatment chambers for the preservation of liquid food products | |
| DE69923912D1 (en) | Pulsed electric field treatment chamber with integrated modular design | |
| GB2317566A (en) | Electrosurgery apparatus waveform generator | |
| RU2005108355A (en) | METHOD FOR COSMETIC SKIN CARE PREVENTING AGING | |
| KR960035406A (en) | Driving circuit | |
| CA2183840A1 (en) | Electric Discharge Method and Apparatus | |
| RU99109294A (en) | ELECTRIC STIMULATOR | |
| US5817142A (en) | Electrical apparatus for killing micro-organisms in the human body | |
| JPH05237479A (en) | Sterilization of legionellaceae | |
| CA2325691C (en) | A high-voltage pulse generator | |
| CA2398124A1 (en) | Device for treatment of water | |
| KR960040151A (en) | Shark repelling device | |
| CN117042706A (en) | Power unit for delivering coherent sinusoidal burst irreversible electroporation energy to biological tissue | |
| US7255839B2 (en) | Device and method for treating a substance containing undesirable organisms using a pulsed electrical field | |
| CA2243618A1 (en) | Method and device for driving a turn-off thyristor | |
| US10998823B2 (en) | Bipolar DC-DC converter topology using passive voltage reversal | |
| US6870405B2 (en) | Method for driving an insulated gate semiconductor device using a short duration pulse | |
| DE60041743D1 (en) | DEVICE WITH A MOTOR OF WHICH SPEED IS CHANGED | |
| JP3041064U (en) | Ultrasonic beauty treatment equipment | |
| JP2008523564A (en) | Single output EL driver that generates reduced current spikes | |
| JP2001093658A (en) | Magnetron drive circuit |