JP5693320B2 - Disinfectant solution processing method and disinfectant solution processing apparatus - Google Patents

Description

  In the present invention, a sterilizing agent solution for sterilization of packaging material (hereinafter referred to as a packaging material) is transferred from a circulation tank to a sterilizer such as a packaging material (hereinafter referred to as a sterilizer) via a heating device in a high temperature state. It is related with the processing method and processing apparatus of the disinfectant solution in the circulation circuit by which the said disinfectant after sterilization, such as a packaging material, is collect | recovered from the said disinfection machine to the said circulation tank.

  Conventionally, a bactericidal agent for packaging material sterilization is supplied from a circulation tank to a sterilizer, and the bactericidal agent after packaging material sterilization is collected into the circulation tank. A device that is supplied to the sterilizer at a high temperature so that the material can be reliably sterilized, and a device that is replenished with a bactericide so that the bactericidal power does not decrease as the concentration of the bactericide decreases, Furthermore, the device which adds an additive to a disinfectant and strengthens the disinfecting power of the disinfectant has been made (see, for example, Patent Document 1 and Patent Document 2).

  Since such disinfectants are easily decomposed when kept at a high temperature, the amount of disinfectant consumption increases with the sequential replenishment of disinfectants, and the demand for reduction of disinfectant consumption has increased in recent years. Yes. In addition, the additive added to the disinfectant tends to be inactive at high temperatures, so the amount of additive consumption increases as the high temperature state is maintained, and the demand for reduction of additive consumption has also increased in recent years. Yes.

Japanese translation of PCT publication No. 2002-502636 JP 2009-226280 A

A conventional disinfectant solution processing apparatus will be described with reference to FIG.
FIG. 3 is a diagram schematically showing a conventional disinfectant solution processing apparatus.
In FIG. 3, the disinfectant solution processing apparatus 10 has a disinfectant having a predetermined high temperature via a heating device 6 provided on the upstream side of the disinfecting machine 4 such as a packaging material from a circulation tank 5 through a pipe P9 by a pump PB. The sterilizer which is supplied to the sterilizer 4 in a state and sterilized the packaging material by the sterilizer 4 is once collected in the collection tank 7 attached to the sterilizer 4 and then pumped. A circulation circuit for the bactericide solution is formed so as to be collected by the PA into the circulation tank 5 through the pipe P8.

  The pipe P8 is provided with a concentration measuring means C on the upstream side of the circulation tank 5 to measure the concentration of the bactericide collected in the circulation tank 5, and the measured concentration measurement value is the control device 8d. In response to a command from the control device 8d, a high-concentration sterilizing agent or an additive for enhancing sterilizing power is injected from the direction of arrow T from the direction of arrow T, and the sterilizing agent in the circulation tank 5 is given a predetermined amount. It comes to concentration.

The operation of such a conventional disinfectant solution processing apparatus 10 will be described. When the disinfectant disinfects the packaging material and the like in the disinfecting machine 4, generally, the disinfecting effect increases as the disinfectant temperature increases. The sterilizing agent supplied to the sterilizer 4 is brought to a predetermined high temperature state via the heating device 6.
On the other hand, when the disinfectant is kept at a high temperature for a long time, the decomposition is accelerated, resulting in a decrease in disinfectant concentration and a concomitant decrease in disinfecting effect.
For this reason, the concentration of the bactericide is measured by the concentration measuring means C, and a high concentration bactericidal agent or additive is injected from the direction of the arrow T by the injection means (not shown) according to the injection instruction from the control device 8d. A predetermined concentration is set.

As described above, in the conventional disinfectant solution processing apparatus 10, the high temperature state of the disinfectant is maintained for a long time in the circulation tank 5 and the pipes before and after the circulation tank 5, and the disintegration of the disinfectant is accelerated to lower the concentration. Therefore, there is a risk that the frequency of injecting a high-concentration germicide increases in order to maintain and stabilize the concentration, and the consumption of the germicide increases.
In addition, if the bactericidal agent is kept at a high temperature for a long time, the additive added to the bactericidal agent tends to become inactive, so that a lot of additives are added so as not to reduce the bactericidal power. Therefore, there is a risk that the additive consumption will increase.
Furthermore, when the amount of the bactericidal agent or additive increases, there is a risk that the amount of clean water used for cleaning increases when the packaging material or the like needs to be cleaned after sterilization.

  In the present invention, a bactericidal solution for sterilization of packaging material is supplied from a circulation tank to a sterilizer such as packaging material in a high temperature state via a heating device, and the sterilizing agent after sterilization of the packaging material is recovered to the circulation tank In the processing method and processing apparatus for the bactericide solution in the circulation circuit, the disinfectant is prevented from being decomposed in the continuous high temperature state, and the consumption of the high concentration bactericide or additive injected for replenishment is reduced. It aims at providing the processing method and apparatus of a disinfectant solution which can implement | achieve the said decomposition | disassembly suppression with low energy consumption while reducing.

The present invention solves the above problems by the following means.
(1) The disinfectant solution treatment method according to the first means is that the disinfectant solution is supplied after being heated from the circulation tank to the disinfecting machine with a heating device, and the disinfectant solution after disinfecting the object to be disinfected is In the processing method of the sterilizer solution recovered from the sterilizer to the circulation tank, the sterilizer solution after sterilizing the article to be sterilized passes through a cooling device provided in the middle of the circulation circuit to the circulation tank. So that it is cooled to a predetermined temperature and collected in the circulation tank, the bactericidal solution is a peracetic acid solution, and the peracetic acid solution is added with a predetermined amount of catalase as an additive for enhancing bactericidal power. was a peracetic acid solution, the heating device, wherein the disinfectant solution catalase is heated to 70 ° C. to become inactive, the cooling device, the disinfectant solution virtue of enhanced germicidal of the catalase by cooling Wherein lowering the temperature to 40 ° C. decrease is suppressed.

  (2) The disinfectant solution processing method of the second means is the disinfectant solution processing method of the first means, wherein a heat exchange device is provided in the middle of the circulation circuit from the disinfecting machine to the cooling device. The disinfectant solution at low temperature from the circulation tank to the heating device also passes through the heat exchanging device, so that the disinfectant solution before heating by the heating device and the disinfectant before cooling by the cooling device The solution is heat-exchanged by the heat exchange device.

(3) The disinfectant solution processing method of the third means is the disinfectant solution processing method of the first or second means of the circuit for circulating the disinfectant solution from the cooling device to the circulation tank. The first concentration measuring means provided in the middle, or the second concentration measuring means provided in the middle of the circulation circuit of the sterilizing agent solution from the heating device to the sterilizer, or the first concentration measuring means and the first The concentration of the sterilizing agent solution is measured by both of the two concentration measuring means, and the sterilizing agent solution in the circulation tank becomes a predetermined concentration by a command from the control device based on the measured value of the concentration of the sterilizing agent solution. Thus, a bactericide stock solution or a bactericide solution having a concentration higher than the concentration used for sterilization is automatically injected into the circulation circuit.

(4) The disinfectant solution processing method according to the fourth means is the disinfectant solution processing method according to any one of the first to third means, wherein the disinfectant is connected to the circulation circuit of the disinfectant solution by piping. The disinfectant solution whose concentration has been prepared is automatically injected from the buffer tank into the circulation circuit.

(5) The disinfectant solution processing apparatus of the fifth means is supplied after the disinfectant solution is heated from the circulation tank to the disinfecting machine by the heating device, and the disinfectant solution after disinfecting the object to be disinfected is In the processing apparatus for the sterilizing agent solution recovered from the sterilizer to the circulation tank, the sterilizing agent solution after sterilizing the object to be sterilized is cooled to a predetermined temperature in the middle of the circulation circuit from the sterilizer to the circulation tank. the cooling device for providing, the disinfectant solution and peracetic acid solution, the peracetic acid solution is peracetic acid solution was added a predetermined amount of catalase as additives for reinforcing germicidal the heating apparatus, the sterilizing The agent solution is heated to 70 ° C. at which the catalase becomes inactive, and the cooling device lowers the temperature to 40 ° C. by which the decrease in efficacy of enhancing the bactericidal activity of the catalase is suppressed by cooling the disinfectant solution. When That.

(6) processing apparatus disinfectant solution sixth means, in the processing apparatus of disinfectant solutions of the fifth means, a heat exchange device in the middle of the direction the Hare circulation circuit from the sterilizer to the cooling device A low-temperature sterilizing agent solution from the circulation tank to the heating device also passes through the heat exchange device, and the sterilizing agent solution before heating by the heating device and the sterilizing agent before cooling by the cooling device The solution exchanges heat with the heat exchange device.

(7) The disinfectant solution processing apparatus of the seventh means is the disinfectant solution processing apparatus of the fifth or sixth means, wherein concentration measuring means is provided in the circulation circuit, and is measured by the concentration measuring means. The measured value of the concentration of the bactericide solution is taken into a control device, and the concentration of the bactericide solution in the circulation circuit is higher than that in the circulation circuit so that the bactericide solution in the circulation tank has a predetermined concentration by the control of the control device. An automatic injection device for automatically injecting a bactericide solution into the circulation circuit is provided.

(8) The disinfectant solution processing apparatus of the eighth means is the above-mentioned disinfectant solution processing apparatus of the seventh means, wherein the disinfectant buffer tank in which the prepared disinfectant solution is stored in a predetermined concentration is circulated in the above-mentioned manner. A pipe is connected to the circuit, the automatic injection device is provided in the middle of the pipe, and a predetermined concentration of bactericidal solution is automatically injected from the bactericidal buffer tank into the circulation circuit according to a command from the control device. It is characterized by comprising.

In the present invention according to claims 1 and 5 , the sterilizing agent solution for sterilizing the packaging material is supplied from the circulation tank to the sterilizing machine such as the packaging material in a high temperature state via a heating device, In the processing method and the processing apparatus of the bactericide solution in the circulation circuit in which the bactericide solution is collected from the sterilizer to the circulation tank, the high-temperature bactericidal solution from the sterilizer is in the middle of the circuit to the circulation tank. The sterilizer solution after sterilization, such as packaging materials, is left in a high temperature state in the circulation tank for a long time by being cooled to a predetermined temperature and collected in the circulation tank. Can be prevented from being decomposed and the sterilizing effect of the sterilizing agent solution is reduced accordingly, and the amount of high concentration sterilizing agent injected to maintain the sterilizing effect of the sterilizing agent solution is reduced. It has the effect that the kill. Further, with the reduction of the consumption of the bactericidal solution, there are effects such as a reduction in the amount of clean water used for cleaning and a reduction in the bactericidal solution drainage treatment cost when cleaning the packaging material after sterilization.

The present invention according to claims 2 and 6 is the disinfectant solution processing method and apparatus according to claims 1 and 5 , wherein the disinfectant solution circulating from the disinfecting machine to the cooling device is in the middle of the circuit. A heat exchange device is provided, and the low temperature sterilizer solution from the circulation tank to the heating device is also passed through the heat exchange device, so that the high temperature sterilizer solution and the low temperature The heat exchange of the bactericide solution has an effect that resources such as heat energy for heating and cooling the bactericide solution can be saved.

The present invention according to claims 3 and 7 is the disinfectant solution processing method and processing apparatus according to any one of claims 1, 2, 5 and 6 , wherein the circulation circuit is provided with a concentration measuring means, and the concentration measuring means The measured value of the measured bactericidal concentration is taken into the control device, and the high concentration bactericidal solution or the bactericide solution is circulated so that the bactericidal solution in the circulation tank has a predetermined concentration by the control of the control device. By providing the automatic injection device for automatically injecting the circuit, it is possible to reliably maintain the bactericide solution at a predetermined concentration.
Further, a first concentration measuring means provided in the middle of the circuit for circulating the bactericidal solution from the cooling device to the circulation tank, and provided in the middle of the circuit for circulating the bactericidal solution from the heating device to the sterilizer. When the concentration of the bactericide is measured by both of the second concentration measuring means, and the bactericide solution in the circulation tank has a predetermined concentration based on the command from the control device based on the measured concentration value. Has the effect that the concentration of the bactericide can be maintained finely.

The present invention according to claims 4 and 8 is the disinfectant solution processing method and the processing apparatus according to any one of claims 1 to 3 and 7 , wherein the disinfectant buffer tank is connected to the circulation circuit of the disinfectant solution. By automatically injecting the prepared high-concentration bactericidal solution into the circulation circuit according to a command from the control device, it is possible to reliably manage the concentration of the bactericidal solution with preset control. Have

The present invention relating to claim 1, by which the pre-Symbol disinfectant solution and the peracetic acid solution, disinfectant solution sterilization effect was excellent could specifically applied in the production line, the cooling peracetic acid solution to a predetermined temperature And being recovered in the circulation tank, it is possible to prevent the peracetic acid solution after sterilization, such as the packaging material, from being left in a high temperature state for a long time in the circulation tank and being decomposed. It has the effect that the reduction of the sterilization effect due to the state maintenance can be reduced.

The present invention relating to claim 1, by pre-Symbol peracetic acid solution is peracetic acid solution was added a predetermined amount of catalase as additives for reinforcing germicidal said catalase becomes inactive by a continuous high temperature state As the effectiveness of enhancing the bactericidal power is reduced, the problem of consuming the catalase in a predetermined amount or more can be solved.

It is the figure which showed typically the processing apparatus of the disinfectant solution concerning the 1st Embodiment of this invention. It is the figure which showed typically the processing apparatus of the disinfectant solution concerning the 2nd Embodiment of this invention. It is the figure which showed typically the processing apparatus of the conventional disinfectant solution.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

(First embodiment of the present invention)
A first embodiment of the present invention will be described with reference to FIG.
FIG. 1 is a diagram schematically showing a disinfectant solution processing apparatus according to a first embodiment of the present invention.
In FIG. 1, the same structure as that of FIG. 3 explained as the prior art is given the same symbol for easy understanding, and a part of overlapping explanation is omitted.
In FIG. 1, a disinfectant solution processing apparatus 1 has a disinfectant solution having a predetermined concentration (hereinafter simply referred to as a disinfectant) from a circulation tank 5 via a heating device 6 to a disinfector 4 through a pipe P2 by a pump PB. It is supplied in a predetermined high temperature state, and the sterilizer 4 sterilizes the packaging material (hereinafter referred to as the packaging material) as an article to be sterilized by the sterilizing agent. The disinfectant used for sterilization is once recovered in the recovery tank 7 and recovered to the circulation tank 5 by the pump PA through the pipe P1, and a cooling device 11 is provided in the middle of the pipe P1. The high-temperature disinfectant used for disinfecting the packaging material in the disinfecting machine 4 is cooled to a predetermined temperature by the cooling device 11.

  Further, a first concentration measuring means CA for measuring the concentration of the bactericide passing through the pipe P1 is provided in the pipe P1 on the upstream side of the circulation tank 5, and the concentration measurement value is sent to the control device 8. In addition, a second concentration measuring means CB for measuring the concentration of the disinfectant passing through the pipe P2 is provided in the pipe P2 on the upstream side of the sterilizer 4, and the measured concentration value is sent to the control device 8. When the control device 8 determines that the concentration measurement value by the first concentration measurement means CA or the second concentration measurement means CB is lower than a predetermined concentration, it is opened and closed by a command from the control device 8. The valve V1 is opened so that the sterilizing agent stock solution or the sterilizing agent solution having a concentration higher than the concentration used for sterilization is automatically injected from the sterilizing agent buffer tank 12 to the inlet of the circulation tank 5 through the pipe P3. In Dynamic injection apparatus has a structure built.

  Here, the case where the bactericidal agent is a peracetic acid solution (for example, a mixed solution of 1500 PPM peracetic acid and 3000 PPM hydrogen peroxide solution. Hereinafter, the bactericidal agent may be referred to as a peracetic acid solution). A preparation tank 13 is provided upstream of the sterilizing agent buffer tank 12, and a peracetic acid solution stock solution (for example, having a concentration 50 times that of the peracetic acid solution used in the sterilizer 4) S0, Fresh water W for diluting the peracetic acid solution stock solution to a predetermined concentration, and an additive (for example, catalase which is a decomposing enzyme of hydrogen peroxide solution) S1 etc. for strengthening the sterilizing power of the peracetic acid solution are added. The acetic acid solution is prepared at a predetermined concentration, and is connected to the disinfectant buffer tank 12 via the opening / closing valve V9 by a pipe P4.

Next, the operation of the disinfectant solution processing apparatus 1 according to the first embodiment of the present invention will be described. In general, the peracetic acid solution as a sterilizing agent is predetermined by the heating device 6 immediately before being supplied to the sterilizer 4 in order to enhance the sterilization effect when the peracetic acid solution sterilizes the packaging material in the sterilizer 4. Is heated to a high temperature state (for example, 70 ° C.), but if it is left in the high temperature state (for example, 65 ° C.) for a long time after sterilization of the packaging material in the circulation tank 5 or the like, the decomposition is accelerated and the peracetic acid solution There is a possibility that the concentration is lowered and the bactericidal effect is lowered.
In the present embodiment, the high temperature peracetic acid solution used for sterilization of the packaging material in the sterilizer 4 is cooled and circulated through the cooling device 11 to a predetermined low temperature state (for example, 65 ° C. → 40 ° C.). Since it is recovered in the tank 5, the decomposition of the peracetic acid solution in the circulation tank 5 and the pipe P1 before and after the circulation tank 5 is suppressed, and accordingly, the decrease in concentration is suppressed and the decrease in sterilization effect is suppressed.

  On the other hand, since the peracetic acid solution is slightly decomposed by being used for sterilizing the packaging material in a high temperature state in the sterilizer 4, the first concentration measuring means CA and the second concentration measuring means CB The concentration is measured, and the on-off valve V1 constituting the automatic injection device is opened according to a command from the control device 8, and the concentration of the concentration higher than the concentration used for the peracetic acid stock solution or sterilization from the sterilizer buffer tank 12 is obtained. By automatically injecting a peracetic acid solution (for example, a mixed solution of 2000 PPM peracetic acid and 4000 PPM hydrogen peroxide solution), the circulation tank 5 maintains a predetermined concentration and maintains the sterilizing effect of the peracetic acid solution. The

In the above description, the case where the concentration measurement of the peracetic acid solution is performed by both the first concentration measurement means CA and the second concentration measurement means CB has been described, but only the first concentration measurement means CA or the second concentration measurement. The density management may be performed by measuring the density only with the means CB.
When concentration management is performed by measuring the concentration in both the first concentration measuring means CA and the second concentration measuring means CB, the concentration immediately before being collected into the circulation tank 5 and the state immediately before being supplied to the sterilizer 4 are used. Since both of the densities are measured and the density is managed by the control device 8, it is desirable that the density management is fine.

Along with the suppression of the decomposition of the peracetic acid solution described above, the injection amount of the peracetic acid stock solution for maintaining the concentration or the peracetic acid solution having a concentration higher than the concentration used for sterilization is reduced into the circulation circuit. Consumption of acetic acid solution is reduced, and this leads to reduction of the amount of clean water used for cleaning and reduction of drainage costs such as peracetic acid solution when cleaning packaging materials after sterilization. Go.
Further, the catalase as the additive becomes inactive at a high temperature state, and the efficacy of enhancing the bactericidal power is reduced. However, the cooling of the explanation described above suppresses the decline in the efficacy of enhancing the bactericidal power and consumes the supplemented catalase. The amount is reduced.

(Second embodiment of the present invention)
Next, a second embodiment of the present invention will be described with reference to FIG.
FIG. 2 is a diagram schematically showing a disinfectant solution processing apparatus according to the second embodiment of the present invention.
2, components having the same structure as in FIG. 1 are given the same reference numerals for easy understanding, and a part of overlapping description is omitted.
In FIG. 2, the disinfectant solution processing device 2 is provided with a heat exchange device 15 in the middle of the pipe P7 from the recovery tank 7 to the cooling device 14 and in the middle of the pipe P8 from the circulation tank 5 to the heating device 6. The high-temperature peracetic acid solution used for sterilization of the packaging material by the sterilizer 4 and the low-temperature peracetic acid solution supplied from the circulation tank 5 to the heating device 6 are passed through the heat exchange device 15. ing.

  Next, the operation of the disinfectant solution processing apparatus 2 according to the second embodiment of the present invention will be described. Since both the high temperature peracetic acid solution used for sterilization of the packaging material in the sterilizer 4 and the low temperature peracetic acid solution supplied from the circulation tank 5 to the heating device 6 pass through the heat exchange device 15, the high temperature state The peracetic acid solution is deprived of heat to an intermediate temperature state (for example, 65 ° C. to about 50 ° C.), and the low temperature peracetic acid solution is heated to an intermediate temperature state (for example, 40 ° C. to about 50 ° C.). Heat exchange takes place.

For this reason, in the first embodiment of the present invention, it is necessary to supply a large amount of cooling water to the cooling device 11 in order to bring the peracetic acid solution in a high temperature state into a low temperature state (for example, 65 ° C. → 40 ° C.). However, in the second embodiment of the present invention, the cooling for bringing the peracetic acid solution in the middle temperature state after passing through the heat exchange device 15 to a low temperature state (for example, about 50 ° C. → 40 ° C.) by the cooling device 14. Since only water is needed, cooling water consumption is reduced and resources are saved.
Furthermore, in the heating device 6, the heating is performed from the intermediate temperature state to the high temperature state (about 50 ° C. → 70 ° C. as an example), and the heat energy consumption required for heating the peracetic acid solution in the low temperature state can be saved.

  Note that the peracetic acid solution recovered in the circulation tank 5 is cooled by the heat exchange device 15 and the cooling device 14, thereby suppressing the decomposition of the peracetic acid solution, and the first concentration measuring means CA and the first concentration measuring device CA. The action of measuring the concentration of the peracetic acid solution by the two-concentration measuring means CB and controlling the concentration of the peracetic acid solution to a predetermined concentration is the same as in the case of the first embodiment of the present invention. Therefore, the overlapping description is omitted.

DESCRIPTION OF SYMBOLS 1 Disinfectant solution processing device 2 Disinfectant solution processing device 4 Sterilizer 5 Circulating tank 6 Heating device 7 Recovery tank 8 Control device 8d Control device 10 Disinfectant solution processing device 11 Cooling device 12 Disinfectant buffer tank 13 Mixing tank 14 Cooling device 15 Heat exchange device C Concentration measuring means CA First concentration measuring means CB Second concentration measuring means P1 Piping P2 Piping P3 Piping P4 Piping P7 Piping P8 Piping P9 Piping PA, PB, PC Pump T Arrow V1 On-off valve V9 Opening Valve W Shimizu

Claims (8)

Processing of the bactericide solution which is supplied after the bactericidal solution is heated from the circulation tank to the sterilizer by the heating device and sterilizes the sterilized material, and is recovered from the sterilizer to the circulation tank. In the method
The sterilizing agent solution after sterilizing the article to be sterilized is cooled to a predetermined temperature and collected in the circulation tank through a cooling device provided in the middle of the circulation circuit to the circulation tank. ,
The disinfectant solution is a peracetic acid solution,
The peracetic acid solution is a peracetic acid solution with a predetermined amount of catalase added as an additive for enhancing bactericidal activity,
The heating device heats the disinfectant solution to 70 ° C. where the catalase becomes inactive,
The method for treating a bactericide solution, wherein the cooling device lowers the temperature to 40 ° C. by which cooling of the bactericide solution suppresses a decrease in the effectiveness of enhancing the bactericidal power of the catalase.   The disinfectant solution processing method according to claim 1, wherein a heat exchange device is provided in the middle of the circulation circuit from the sterilizer to the cooling device, and the sterilizer solution in a low temperature state from the circulation tank to the heating device. Also, the heat exchange device is used to exchange heat between the bactericide solution before heating by the heating device and the bactericide solution before cooling by the cooling device. The processing method of the disinfectant solution characterized by the above-mentioned.   In the processing method of the disinfectant solution according to claim 1 or 2, the first concentration measuring means provided in the middle of the circulation circuit of the disinfectant solution from the cooling device to the circulation tank, or from the heating device Second concentration measuring means provided in the middle of the circulation circuit of the bactericidal solution toward the sterilizer, or measuring the concentration of the bactericide solution by both the first concentration measuring means and the second concentration measuring means, Based on the measured value of the concentration of the bactericide solution, a bactericide having a concentration higher than the concentration used for the bactericide stock solution or sterilization so that the bactericide solution in the circulation tank has a predetermined concentration according to a command from the control device. A method for treating a bactericide solution, wherein the solution is automatically injected into the circulation circuit.   The processing method of the bactericide solution according to any one of claims 1 to 3, wherein the bactericide solution whose concentration has been prepared is circulated from a bactericide buffer tank connected to a circulation circuit of the bactericide solution. A method for treating a bactericide solution, characterized in that it is automatically injected into a circuit. Processing of the bactericide solution which is supplied after the bactericidal solution is heated from the circulation tank to the sterilizer by the heating device and sterilizes the sterilized material, and is recovered from the sterilizer to the circulation tank. In the device
In the middle of the circulation circuit from the sterilizer to the circulation tank, a cooling device for cooling the sterilizer solution after sterilizing the sterilized material to a predetermined temperature is provided,
The disinfectant solution is a peracetic acid solution,
The peracetic acid solution is a peracetic acid solution with a predetermined amount of catalase added as an additive for enhancing bactericidal activity,
The heating device heats the disinfectant solution to 70 ° C. where the catalase becomes inactive,
The cooling device includes a processing unit of the disinfectant solution, characterized in that lowering the temperature of the disinfectant solution to 40 ° C. potency decrease of the strengthening bactericidal power of the catalase is inhibited by cooling.   6. The disinfectant solution processing apparatus according to claim 5, wherein a heat exchange device is provided in the middle of the circulation circuit from the sterilizer to the cooling device, and the disinfectant is in a low temperature state from the circulation tank to the heating device. The solution also passes through the heat exchange device so that the bactericide solution before heating by the heating device and the bactericide solution before cooling by the cooling device exchange heat with the heat exchange device. An apparatus for treating a bactericide solution.   In the disinfectant solution processing apparatus according to claim 5 or 6, a concentration measuring unit is provided in the circulation circuit, and a measured value of the concentration of the disinfectant solution measured by the concentration measuring unit is taken into a control device, An automatic injection device is provided for automatically injecting a sterilant solution having a higher concentration than the sterilizer solution in the circulation circuit into the circulation circuit so that the sterilant solution in the circulation tank has a predetermined concentration by the control of the control device. A disinfectant solution processing apparatus.   8. The disinfectant solution processing apparatus according to claim 7, wherein a disinfectant buffer tank for storing a disinfectant solution prepared at a predetermined concentration is connected to the circulation circuit, and the automatic injection is provided in the middle of the line. An apparatus for treating a bactericide solution, characterized in that an apparatus is provided so that a bactericide solution having a predetermined concentration is automatically injected from the bactericide buffer tank into the circulation circuit according to a command from the control device.

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