JP4726821B2 - Method for preparing cleaning liquid for sterilization - Google Patents

Description

  The present invention relates to a method for preparing a sterilizing / disinfecting cleaning liquid used for sterilizing a living body, skin, and the like, and more particularly, to a method for preparing a sterilizing / disinfecting cleaning liquid containing electrolyzed water and salt as main components.

  Among electrolytically generated water, acidic electrolytically generated water (electrolytically generated acidic water) is known as a bactericidal agent having a high bactericidal action due to an effective chlorine component, and the bactericidal agent is used in various fields. Development is underway. In addition, alkaline electrolytically generated water (electrolytically generated alkaline water) is known as a cleaning agent having a high cleaning action due to an alkali component, and its use has been developed in various fields. Yes. An example of the use of these electrolyzed water is in the medical field. As a medical field application, it is used as a sterilizing / disinfecting cleaning solution for clarifying living bodies and skin, such as skin, living body wounds, affected areas, incisions, percutaneous openings of indwelling catheters, anus, etc. The

  Specific examples of the use of electrolytically generated water as a disinfectant or cleaning agent in the medical field include strongly acidic electrolytically generated water (strongly acidic electrolytically generated acidic water) and / or strongly alkaline electrolytically generated water (strongly alkaline) An example of using electrolytically generated alkaline water is proposed under the name of “electrolyzed purified water” (see Patent Document 1), and an example of using weakly acidic to weakly alkaline electrolytically generated water is provided. It has been proposed under the name “electrolyzed water that is isotonic with blood” (see Patent Document 2).

Thus, an example of the “electrolytically generated purified water” proposed in Patent Document 1 described above is intended to have a high sterilizing and disinfecting action and not damage living cells. The electrolyzed acidic water and the salt content (salt) are the main components, and the salt concentration is adjusted to a predetermined concentration value in the range of 0.60 to 0.90% by weight. On the other hand, the "electrolyzed water that is isotonic with blood" proposed in Patent Document 2 described above has a high sterilizing and disinfecting action and is intended to reduce irritation to cells and degeneration of cells. Thus, it is weakly acidic to weakly alkaline electrolyzed water, and the osmotic pressure is adjusted to 128 to 322 mOsm.
Japanese Patent No. 3722662 JP 2000-157777 A

  As a result of intensive studies on a cleaning liquid effective for sterilizing and disinfecting living organisms, skin, etc., the present inventor has found that in terms of sterilizing and disinfecting action, electrolytically generated acidic water in an acidic region having an effective chlorine component. Is confirmed to be valid. The form of the effective chlorine component with bactericidal activity in the electrogenerated water is in the form of chlorine and hypochlorous acid in the strongly acidic region, and hypochlorite and hypochlorite ions in the strongly acidic to neutral regions. In the alkaline region, the form of hypochlorite ion is exhibited. Electrolytically generated water in the alkaline range has a low sterilizing action and a high persistence, and is therefore unsuitable for sterilizing and sterilizing wounds. Therefore, from the viewpoint of sterilizing and disinfecting action, the electrolytically generated purified water described in Patent Document 1 is recognized as effective, and the electrolytic water described in Patent Document 2 is electrolytically generated in the acidic range. It is recognized that it is effective if it is limited to water.

  On the other hand, the form of the effective chlorine component in the electrolytically generated water in the acidic region is greatly different between the strongly acidic region and the weakly acidic region. In the electrolytically generated acidic water, the content of chlorine having high volatility tends to gradually increase as the pH decreases, and when the pH is 3 or less, chlorine having high volatility increases remarkably. Electrolytically generated acidic water containing a lot of highly volatile chlorine will cause the volatilization of chlorine and the loss of sterilization ability early in an open system, as well as causing corrosion problems to surrounding equipment due to the volatilized chlorine gas. . This is a big problem especially in medical facilities where many precision instruments exist. Also, electrolyzed acidic water in a strongly acidic acidic region is not preferable from the viewpoint of irritation to the living body.

  From the above, the present inventor, as a sterilizing / disinfecting cleaning liquid for sterilizing a living body, skin, etc., is a highly acidic region of the electrolytically generated purified water proposed in Patent Document 1 above. Electrolytically generated acidic water with an acidity of neutral to weakly acidic range (pH 3.0 to 6.5, effective chlorine concentration 1 to 30 mg / kg, salinity concentration 0.6 to It was confirmed that 0.90% by weight of electrolytically generated purified water was the most effective sterilizing / disinfecting cleaning solution for sterilizing living organisms and skin. However, Patent Document 1 does not disclose a preparation method for specifically generating the sterilizing / disinfecting cleaning liquid.

  On the other hand, since the electrolyzed water proposed in Patent Document 2 has a pH in the range of 3 to 8.5, the patent document discloses that the acidity of the electrolytically generated acid in the neutral to weakly acidic range. About the preparation method of the electrolyzed water which is water, it is disclosed once. The method for preparing electrolyzed water disclosed in the patent document employs means for adjusting the pH of electrolyzed water by adding hydrochloric acid to the electrolyzed water produced by non-membrane electrolysis. For this reason, it is indispensable to use hydrochloric acid, which is a dangerous substance, in the adjustment means, and the adjustment means is not suitable as a method for preparing a sterilizing / disinfecting cleaning liquid commonly used in medical facilities. Accordingly, an object of the present invention is to provide a preparation method that can advantageously produce the cleaning liquid for sterilization.

  The present invention relates to a method for preparing a sterilizing / disinfecting cleaning liquid containing electrolyzed water and salt as main components. A first method for preparing a sterilizing / disinfecting cleaning liquid according to the present invention is to supply electrolyzed water, which is a dilute aqueous solution containing salt, to an anode-side electrolysis chamber and a cathode-side electrolysis chamber constituting a diaphragm membrane electrolytic cell. Strongly acidic electrogenerated acidic water is generated in the side electrolysis chamber and strong alkaline electrogenerated alkaline water is generated in the cathode electrolysis chamber, and the generated strong acidic electrolyzed acidic water and strong alkaline electrogenerated alkaline water are generated. Mixing water to adjust to an electrogenerated water having an effective chlorine concentration of 1 to 30 mg / kg at a predetermined pH value in the range of 3.0 to 6.5, and the electrolyzed water By adjusting the salt concentration of the electrolyzed water in advance or by mixing a predetermined amount of sodium chloride in the electrolyzed water, a predetermined concentration in the range of 0.60 to 0.90% by weight is obtained. Also characterized by adjusting to the value It is.

  The second method for preparing the sterilizing / disinfecting cleaning liquid according to the present invention is to add electrolyzed water, which is a dilute aqueous solution containing salt, to the anode-side electrolysis chamber and the cathode-side electrolysis chamber constituting the diaphragm membrane electrolytic cell. Supplying the supply flow rate to the electrolysis chamber more than the supply flow rate to the cathode side electrolysis chamber, the electrolytically generated acidic water generated in the anode side electrolysis chamber is at a predetermined pH value in the range of 3.0 to 6.5. Adjusting the electrolyzed water having an effective chlorine concentration of 1 to 30 mg / kg and adjusting the salt concentration of the electrolyzed water in advance to the salt concentration of the electrolyzed water, or the electrolyzed water By mixing a predetermined amount of sodium chloride with water, the concentration is adjusted to a predetermined concentration value in the range of 0.60 to 0.90% by weight.

  The method for preparing a sterilizing / disinfecting cleaning liquid according to the present invention has a pH of 3.0 to 6.5, an acidity in a neutral region to a weakly acidic region, and an effective chlorine concentration in the range of 1 to 30 mg / kg. A cleaning liquid for sterilization cleaning, which is electrolytically generated acidic water having a concentration in the range of 0.60 to 0.90% by weight, is prepared. The sterilizing / disinfecting cleaning liquid has a high sterilizing / disinfecting action on a living body, skin, and the like, does not damage the cells of the living body, and greatly suppresses irritation to the living body. Therefore, the sterilizing / disinfecting cleaning liquid can be said to be an extremely effective sterilizing / disinfecting cleaning liquid for sterilizing a living body, skin, and the like.

  By the way, in the preparation method of the cleaning liquid for sterilization / disinfection according to the present invention, the acidity which is the first component of the main component of the cleaning liquid for sterilization / disinfection is used for the preparation of electrolytically generated acidic water in which the acidity is in the neutral to weakly acidic range. Only the electrolyzed water produced by diaphragm electrolysis using dilute saline as the electrolyzed water is used. That is, in the first preparation method of the sterilizing / disinfecting cleaning liquid according to the present invention, the acidity in the neutral to weakly acidic range is adjusted in the first electrolytic method of the sterilizing / disinfecting solution according to the present invention in the anode side electrolytic chamber of the diaphragm electrolytic cell. A means for mixing the strongly acidic electrolytically generated acidic water generated and the strongly alkaline electrolytically generated alkaline water generated in the anode side electrolysis chamber with each other is adopted, and the second disinfectant cleaning liquid for sterilization and disinfection according to the present invention is used. In the preparation method, means for differentiating the supply flow rates of the electrolyzed water supplied to the anode-side electrolysis chamber and the cathode-side electrolysis chamber of the diaphragm electrolytic cell are adopted. For this reason, the preparation of the cleaning liquid for sterilization / disinfection has a great advantage in that it is not necessary to use a dangerous substance such as hydrochloric acid during the preparation operation, and the preparation operator does not need to handle a dangerous substance such as hydrochloric acid.

  In the method for preparing a sterilizing / disinfecting cleaning liquid according to the present invention, the salt concentration of the electrolyzed water is adjusted in advance in order to adjust the concentration of the salt that is the second main component of the sterilizing / disinfecting cleaning liquid. Or a predetermined concentration in the range of 0.60 to 0.90% by weight by mixing a predetermined amount of sodium chloride with electrolyzed water whose pH as the first component is adjusted to a predetermined pH value The means to adjust to the value is taken. If these adjusting means are adopted, not only the former adjusting means but also the latter mixing means, the salinity concentration is set to a predetermined concentration value without any influence on the pH value of the electrolytically generated acidic water. There are advantages that can be adjusted.

  The present invention relates to a method for preparing a sterilizing / disinfecting cleaning liquid used for sterilizing a living body, skin, etc., in particular, a sterilizing / disinfecting cleaning liquid containing electrolyzed water and salt as main components. The sterilizing / disinfecting cleaning liquid prepared by the preparation method according to the present invention has an effective chlorine concentration of 1 at a predetermined pH value in the range of acidity from neutral to weakly acidic (pH 3.0 to 6.5). It has a predetermined concentration value in the range of ˜30 mg / kg and the salinity concentration in the range of 0.60 to 0.90% by weight.

  The present inventor is the first main component of the patented invention owned by the present applicant, ie, the electrolytically generated acidic water having a sterilizing and disinfecting action among the electrolytically generated purified water proposed in Patent Document 1 at the beginning. In addition, as a result of earnest research on the electrolytically generated purified water having salt as the second main component, the pH of the first electrolytically generated acidic water is in the range of 3.0 to 6.5 (the acidity is in the neutral range). In the case of (˜weakly acidic region), the knowledge that the sterilizing and disinfecting action is higher than that in the case of a strongly acidic region having a pH of less than 3.0 was obtained. The said knowledge is also clear from FIG. 1 which shows the relationship between the pH of electrolyzed water, and the form which the effective chlorine component which has the bactericidal ability in electrolyzed water exhibits.

  The form of the effective chlorine component in the electrolyzed water in the acidic region is greatly different between the strongly acidic region and the weakly acidic region, and the content of highly volatile chlorine tends to increase rapidly as the pH decreases. In addition, the content of hypochlorous acid having a high bactericidal action tends to rapidly decrease. In addition, the content of hypochlorous acid having a high bactericidal action decreases rapidly as the pH increases after pH 5. In the region where the pH of the electrolyzed water is 3 or less, the content of chlorine with high volatility is large. Therefore, in the open system, the electrolyzed acidic water quickly loses sterilizing ability due to the rapid volatilization of chlorine. Corrosion problems occur on peripheral equipment due to volatilized chlorine gas.

  Based on this knowledge, the inventor has a predetermined pH value in the range of 3.0 to 6.5, an effective chlorine concentration of 1 to 30 mg / kg, and a salinity of 0.60 to 0. As a result of experiments according to each experiment presented in Patent Document 1 at the beginning of the sterilizing / disinfecting cleaning liquid having a predetermined concentration value in the range of 90 wt%, the sterilizing / disinfecting cleaning liquid was It was confirmed that the cleaning liquid for sterilization and disinfection has a high sterilization and disinfection action, does not damage cells in the living body, and has little irritation to the living body. In addition, it was confirmed that the germicidal disinfectant cleaning liquid has little volatilization of chlorine even in an open system, and the corrosion problem to peripheral equipment and the like due to the volatilized chlorine gas is sufficiently suppressed. Based on this finding, the present inventor has found the following preparation method as a result of examining an optimal preparation method for the preparation method for producing the sterilizing / disinfecting cleaning liquid.

  The first method of preparing the sterilizing / disinfecting cleaning liquid is to supply electrolyzed water, which is a dilute aqueous solution containing salt, to the anode-side electrolysis chamber and the cathode-side electrolysis chamber constituting the diaphragm membrane electrolytic cell. The strongly acidic electrolyzed acidic water is generated in the cathode-side electrolysis chamber, and the strongly acidic electrolyzed acidic water and the strongly alkaline electrolyzed alkaline water are mixed. Adjusting the pH of the electrolyzed water in the range of 1 to 30 mg / kg to the effective chlorine concentration at a predetermined pH value in the range of 3.0 to 6.5, and the salt concentration of the electrolyzed water By adjusting the salt concentration of the electrolyzed water in advance or by mixing a predetermined amount of salt with the electrolyzed water, the concentration is adjusted to a predetermined concentration value in the range of 0.60 to 0.90% by weight. To do.

  Further, the second method for preparing the cleaning liquid for sterilization and disinfection is as follows. Electrolyzed water, which is a dilute aqueous solution containing sodium chloride, is supplied to the anode-side electrolysis chamber and the cathode-side electrolysis chamber constituting the diaphragm membrane electrolytic cell. The supply flow rate is higher than the supply flow rate for the cathode side electrolysis chamber, and the electrolyzed acidic water generated in the anode side electrolysis chamber has an effective chlorine concentration at a predetermined pH value in the range of 3.0 to 6.5. Is adjusted to electrolyzed water in the range of 1 to 30 mg / kg, and the salt concentration of the electrolyzed water is adjusted by adjusting the salt concentration of the electrolyzed water in advance, or By mixing a fixed amount of sodium chloride, the concentration is adjusted to a predetermined concentration in the range of 0.60 to 0.90% by weight. FIG. 2 shows an apparatus for producing a sterilizing / disinfecting cleaning liquid that can implement the method for preparing the sterilizing / disinfecting cleaning liquid. The sterilizing / disinfecting cleaning liquid manufacturing apparatus (hereinafter abbreviated as the cleaning liquid manufacturing apparatus) mainly includes an electrolyzed water generation apparatus 10a, an electrolyzed water preparation apparatus 10b, and a concentrated salt water addition apparatus 10c. They are appropriately connected by the flowing water pipe 20.

  The electrolyzed water generating apparatus 10a constituting the cleaning liquid manufacturing apparatus is a conventionally known diaphragm type electrolyzed water generating apparatus, in which the inside of the electrolytic cell 11 is divided into two compartments by the diaphragm 12, and each compartment is divided into two compartments. Is formed in the electrolysis chambers R1, R2 with the respective electrodes 13a, 13b disposed therein. During the electrolysis operation of the electrolyzed water generator 10a, a predetermined voltage is applied to the electrodes 13a and 13b in the electrolysis chambers R1 and R2, and one electrolysis chamber becomes an anode electrolysis chamber. The other electrolysis chamber is formed in the cathode side electrolysis chamber. In the electrolyzed water generating apparatus 10a, for example, the electrolysis chamber R1 is formed in the anode-side electrolysis chamber, and the electrolysis chamber R2 is set to be the cathode-side electrolysis chamber. The voltage applied to each electrode 13a, 13b is configured to be controlled by a control device (not shown). In the electrolyzed water generating apparatus 10a, the branch pipe parts 21a and 21b of the supply pipe 21 of the electrolyzed water constituting the flowing water pipe 20 are connected to the upstream side of the electrolysis chambers R1 and R2. Further, a first outflow pipe line 22a and a second outflow pipe line 22b constituting the flowing water pipe line 20 are connected to the downstream sides of the electrolysis chambers R1 and R2.

  The electrolyzed water preparation apparatus 10b constituting the cleaning liquid manufacturing apparatus includes a concentrated salt water tank 14a, an introduction conduit 14b, and a variable capacity supply pump 14c. The introduction pipe line 14b is connected to the concentrated salt water tank 14a and the main pipe line part 21c of the supply pipe 21 of the electrolyzed water, and the saturated salt water tank 14a contains saturated saline. The supply pump 14c is driven to continuously introduce the saturated saline solution in the concentrated salt water tank 14a into the main conduit portion 21c of the supply conduit 21 at a set flow rate. The discharge capacity of the supply pump 14c is controlled by a control device (not shown).

  The electrolyzed water preparation device 10b functions to introduce saturated saline solution having a set flow rate into raw water such as tap water supplied at a flow rate set in the supply pipe 21. The saturated saline solution introduced into the main conduit portion 21c of the supply conduit 21 is uniformly mixed with the raw water flowing in the main conduit portion 21c to prepare a diluted saline solution having a predetermined concentration. The prepared dilute saline solution is supplied as electrolyzed water into the electrolysis chambers R1 and R2 of the electrolytic cell 11 through the branch pipe sections 21a and 21b of the supply pipe 21. In addition, flow control valves 22a, 22b, and 22c in the middle of the branch pipe parts 21a and 21b and the main pipe part 21c are interposed in the supply pipe line 21 that constitutes the flowing water pipe line 20. Each flow control valve 23a, 23b, 23c is configured to control the allowable flow rate by a control device (not shown).

  Concentrated salt water adding apparatus 10c constituting the cleaning liquid production apparatus includes concentrated salt tank 15a, introduction pipe line 15b, and variable capacity type supply pump 15c, as in the case of electrolyzed water preparation apparatus 10b. Is connected to a first introduction conduit 24 a for introducing the liquid into the cleaning liquid tank 16. The first introduction pipe line 24a is connected to the first outflow pipe line 22a connected to the anode side electrolysis chamber R1 of the electrolytic cell 11, and the second outflow line 22b connected to the cathode side electrolysis room R2 of the electrolytic cell 11. In addition, they are connected via a second introduction conduit 24b.

  One end of the second introduction pipe line 24b is connected to the middle of the second outflow pipe line 22b, and the other end is upstream of the connection part of the introduction pipe line 15b of the concentrated salt water addition apparatus 10c in the first introduction pipe line 24a. Connected to the side. A flow rate control valve 23d is interposed at a connection portion between the second introduction pipe line 24b and the second outflow pipe line 22b. The flow rate control valve 23d controls the flow rate of the electrolytically generated alkaline water toward the second introduction conduit 24b, and the flow rate control operation is performed by a control device (not shown).

  The concentrated salt water adding device 10c functions to introduce saturated saline solution having a set flow rate into the first introduction pipe line 24a by driving the supply pump 15c. The saturated saline solution introduced into the first introduction pipe line 24a is uniformly mixed with the electrolytically generated water flowing in the first introduction pipe line 24a, and a sterilizing / disinfecting cleaning liquid having a predetermined salt concentration is set. Prepare. The prepared sterilizing / disinfecting cleaning liquid is introduced into the cleaning liquid tank 16 and stored therein. The sterilizing / disinfecting cleaning liquid accommodated in the cleaning liquid tank 16 is used for sterilizing / disinfecting the living body and skin as quickly as possible.

  In the cleaning liquid production apparatus, a pH sensor 25a and a salinity concentration sensor 25b are interposed at a site downstream of the connection site of the introduction pipe line 15b of the concentrated salt water addition apparatus 10c in the first introduction pipe line 24a. The prepared sterilizing / disinfecting cleaning solution is configured to output the pH and salt concentration as a detection signal to a control device (not shown). The control device controls the electrolysis conditions such as the applied current based on the detected pH, or controls the allowable flow rate of the flow rate control valve 23d to set the pH of the sterilizing and cleaning liquid to be prepared. It works to maintain the value. Moreover, the said control apparatus controls the discharge flow volume of the supply pump 14c of the to-be-electrolyzed water preparation apparatus 10b and / or the supply pump 15c of the concentrated salt water addition apparatus 10c based on the detected salt concentration, and is sterilized disinfection prepared It functions to maintain the salinity of the cleaning solution at a set salinity value. Both the first preparation method and the second preparation method of the sterilizing / disinfecting cleaning liquid according to the present invention can be carried out by using the cleaning liquid manufacturing apparatus.

  In the first preparation method according to the present invention, by using a dilute aqueous solution containing a predetermined concentration of sodium chloride as electrolyzed water and subjecting the electrolyzed water to diaphragm membrane electrolysis, strongly acidic electrolyzed acidic water and strongly alkaline electrolysis are obtained. Produced alkaline water is produced, and both of these electrolyzed water are mixed, and electrolyzed water having an effective chlorine concentration of 1 to 30 mg / kg at a predetermined pH value in the range of 3.0 to 6.5. And adjusting the salt concentration of the electrolyzed water adjusted to 0 by adjusting the salt concentration of the water to be electrolyzed in advance, or by mixing a predetermined amount of sodium chloride in the electrolyzed water. It is adjusted to a predetermined concentration value in the range of .60 to 0.90% by weight.

  In order to implement the first preparation method according to the present invention using the cleaning liquid manufacturing apparatus, first, the electrolysis operation of the electrolyzed water generating apparatus 10a is started. In starting the electrolysis operation, the control device continuously introduces raw water into the main pipe section 21c of the supply pipe line 21 and drives the electrolyzed water preparation apparatus 10b to supply saturated saline solution at a predetermined flow rate. It is continuously introduced into the main pipe section 21c. As a result, a diluted saline solution having a predetermined concentration is generated in the main pipeline portion 21c, and the diluted saline solution is supplied as electrolyzed water through the branch pipeline portions 21a and 21b of the supply pipeline 21. It is supplied to each electrolytic chamber R1, R2 of the electrolytic cell 11 at an equal flow rate. During this time, the control device sets the electrolysis conditions in the electrolyzed water generating device 10a according to the salinity concentration of the water to be electrolyzed, the supply flow rate, and the like, and applies the voltage and current set to the electrodes 13a and 13b. In this state, the electrolyzed water generating device 10a starts diaphragm electrolysis using dilute saline with a predetermined concentration as the water to be electrolyzed.

  In the electrolyzed water generating apparatus 10 a, when diaphragm electrolysis is started, the electrolyzed water that is a diluted saline solution that is continuously prepared in the main pipe portion 21 c of the supply pipe 21 is supplied to the supply pipe 21. An equal flow rate is supplied to the electrolysis chambers R1 and R2 of the electrolytic cell 11 through the branch pipe sections 21a and 21b. The supplied electrolyzed water generates, for example, strongly acidic (pH of 3.0 or less) electrolytically generated acidic water in the anode-side electrolysis chamber R1, and, for example, strongly alkaline (pH is low) in the cathode-side electrolysis chamber R2. (10.0 or more) electrolytically generated alkaline water is generated. In the present embodiment, the strongly acidic electrolytically generated acidic water generated in the anode electrolysis chamber R1 is introduced and accommodated in the cleaning liquid tank 16 through the first outflow conduit 22a and the first introduction conduit 24a.

  On the other hand, the strongly alkaline electrolytically generated alkaline water generated in the cathode side electrolysis chamber R2 flows through the second outflow pipe 22b, and the predetermined flow rate set by the flow rate control valve 23d is introduced into the second. The flow is diverted into the pipe line 24b. The strongly alkaline electrolyzed alkaline water introduced by the diversion is introduced into the concentrated salt water adding device 10c in the first introduction pipe line 24a in the upstream part from the connection part and flows in the first introduction pipe line 24a. The electrolytically generated water adjusted to the set pH value is prepared by uniformly mixing with the electrolytically generated acidic water. The remainder of the strongly alkaline electrolytically generated alkaline water flowing through the second outflow pipe 22b is discharged out of the system from the drain outlet on the tip side of the second outflow pipe 22b.

  During this time, the control device drives the concentrated salt water adding device 10c. Thereby, the concentrated salt water adding apparatus 10c continuously introduces the set saturated flow rate of saturated saline into the first introduction pipe line 24a. The introduced saturated saline solution is uniformly mixed and dissolved with the electrolytically generated water whose pH is adjusted and flows in the first introduction pipe line 24a, and the salt concentration is set in the first introduction pipe line 24a. By adjusting to the predetermined concentration value, a sterilizing / disinfecting cleaning solution is prepared. The prepared sterilizing / disinfecting cleaning liquid is introduced and stored in the cleaning liquid tank 16 through the first introduction pipe 24a.

  In the sterilizing / disinfecting cleaning liquid, the pH is checked by the pH sensor 25a and the salinity concentration is checked by the salinity concentration sensor 25b before being introduced into the cleaning liquid tank 16. Based on the pH detection signal from the pH sensor 25a, the control device controls the pH value of the sterilizing / disinfecting cleaning liquid to a predetermined pH value, and based on the salt concentration detection signal from the salt concentration sensor 25b. The salt concentration of the sterilizing / disinfecting cleaning liquid is controlled to a predetermined concentration value.

  According to one embodiment of the first preparation method of the present invention, in the electrolyzed water generating apparatus 10a, a strongly acidic electrogenerated acid having an effective chlorine component of 30 mg / kg at pH 2.7 in the anode electrolysis chamber R1. Water can be produced and 0.2 mg / kg of effective chlorine component can be produced in the cathode side electrolysis chamber R2 at pH 11.5, and the produced strongly acidic electrolyzed acidic water and strongly alkaline electrolyzed alkaline Water is mixed at a ratio of 3: 2 by volume, and an appropriate amount of saturated saline solution is added from the concentrated salt water adding apparatus 10c to the flowing electrolyzed water, and the pH is 3 A cleaning liquid for sterilization and disinfection having an effective chlorine concentration of 1 to 30 mg / kg and a salt concentration of 0.6 to 0.9 wt% can be prepared.

  Moreover, in order to implement the 2nd preparation method which concerns on this invention using the said washing | cleaning liquid manufacturing apparatus, first, the electrolysis operation | movement of the electrolyzed water generating apparatus 10a is started. In starting the electrolysis operation, the control device continuously introduces raw water into the main pipe section 21c of the supply pipe line 21 and drives the electrolyzed water preparation apparatus 10b to supply saturated saline solution at a predetermined flow rate. It is continuously introduced into the main pipe section 21c. As a result, a diluted saline solution having a predetermined concentration is generated in the main pipeline portion 21c, and the diluted saline solution is supplied as electrolyzed water through the branch pipeline portions 21a and 21b of the supply pipeline 21. It supplies to each electrolytic chamber R1, R2 of the electrolytic cell 11. In the preparation method, in particular, the supply flow rate of the electrolyzed water to the anode side electrolysis chamber R1 is controlled and supplied to be higher than the supply flow rate of the electrolyzed water to the cathode side electrolysis chamber R2. In this case, the flow rate of the electrolyzed water is adjusted by the flow control valves 23a and 23b interposed in the branch pipe portions 21a and 21b of the supply pipe 21, but the permissible flow rate by the flow control valves 23a and 23b. The control is performed by the control device.

  In this embodiment, due to the flow rate balance of the electrolyzed water for both electrolysis chambers R1 and R2, the acidity in the anode electrolysis chamber R1 is in the range of neutral to weakly acidic (pH 3.0 to 6.5). Electrolytically generated acidic water having an effective chlorine concentration of 1 to 30 mg / kg is generated at a predetermined pH value, and strongly alkaline electrolytically generated alkaline water having a pH of 12 or more is generated in the cathode side electrolytic chamber R2. The generated electrolytically generated acidic water is introduced and stored in the cleaning liquid tank 16 through the first outflow conduit 22a and the first introduction conduit 24a. Further, the generated electrolytically generated alkaline water is not separated from the system through the second outflow pipe 22b without being diverted to the second introduction pipe 24b side by the flow rate regulating action on the second introduction pipe 24b of the flow control valve 23d. To be drained.

  During this time, the control device drives the concentrated salt water adding device 10c. As a result, the concentrated salt water adding device 10c introduces the set saturated flow rate of saturated saline into the first introduction conduit 24a. The introduced saturated saline is uniformly mixed with the electrolytically generated acidic water flowing in the first introduction conduit 24a, and adjusted to a predetermined concentration value in which the salt concentration is set in the first introduction conduit 24a. Thus, a cleaning liquid for sterilization is prepared. The prepared sterilizing / disinfecting cleaning liquid is introduced and stored in the cleaning liquid tank 16 through the first introduction pipe 24a.

  In the sterilizing / disinfecting cleaning liquid, the pH is checked by the pH sensor 25a and the salinity concentration is checked by the salinity concentration sensor 25b before being introduced into the cleaning liquid tank 16. Based on the pH detection signal from the pH sensor 25a, the control device controls the pH of the sterilizing / disinfecting cleaning liquid to a predetermined pH value, and based on the salt concentration detection signal from the salt concentration sensor 25b, The salt concentration of the sterilizing / disinfecting cleaning liquid is controlled to a predetermined concentration value.

  According to one embodiment of the second preparation method of the present invention, in the electrolyzed water generating apparatus 10a, a weakly acidic electrogenerated acid having an effective chlorine component of 10 mg / kg at pH 3.0 in the anode electrolysis chamber R1. An appropriate amount of saturated saline is added from the concentrated salt water adding apparatus 10c, mixed and dissolved in the electrolytically generated acidic water flowing in the first introduction pipe line 24a by generating water, and the pH is 3. A cleaning liquid for sterilization and disinfection having an effective chlorine concentration of 10 mg / kg and a salt concentration of 0.9 wt% can be prepared.

  In the first preparation method and the second preparation method described above, an example in which the concentrated salt water addition apparatus 10c is used to adjust the salinity concentration in the electrolytically generated water is illustrated. In the method, means for adjusting the salt concentration in the electrolytically generated water can be taken using only the electrolyzed water preparation device 10b without using the concentrated salt water addition device 10c.

It is a form figure which shows the relationship between the form which the effective chlorine component in electrolysis generated water exhibits, and pH. It is a schematic block diagram which shows one form of the washing | cleaning-liquid manufacturing apparatus which enforces the preparation method which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10a ... Electrolyzed water production | generation apparatus, 11 ... Electrolytic tank, 12 ... Diaphragm, 13a, 13b ... Electrode, R1, R2 ... Electrolytic chamber, 10b ... Electrolyzed water preparation apparatus, 14a ... Concentrated salt water tank, 14b ... Introductory pipe line, 14c DESCRIPTION OF SYMBOLS ... Supply pump, 10c ... Concentrated salt water addition apparatus, 15a ... Concentrated salt water tank, 15b ... Introduction pipe line, 15c ... Supply pump, 16 ... Cleaning liquid tank, 20 ... Flowing water line, 21 ... Supply pipe line, 21a, 21b ... Branch Pipe part, 21c ... Main pipe part, 22a ... First outflow pipe line, 22b ... Second outflow pipe line, 23a-23d ... Flow control valve, 24a ... First introduction pipe line, 24b ... Second introduction pipe line 25a ... pH sensor, 25b ... salt concentration sensor.

Claims (2)

A method for preparing a sterilizing / disinfecting cleaning liquid comprising electrolyzed water and salt as main components, the preparation method comprising an electrolyzed water, which is a dilute aqueous solution containing sodium chloride, and an anode-side electrolysis chamber and a cathode constituting a diaphragm electrolyzer Supplying to the side electrolysis chamber, generating strongly acidic electrogenerated acidic water in the anode side electrolysis chamber and generating strong alkaline electrogenerated alkaline water in the cathode side electrolysis chamber, and generating strong acid electrolysis generated Acidic water and strongly alkaline electrolytically generated alkaline water are mixed to adjust the electrolytically generated water having an effective chlorine concentration of 1 to 30 mg / kg at a predetermined pH value in the range of 3.0 to 6.5. And adjusting the salt concentration of the electrolyzed water in advance by adjusting the salt concentration of the electrolyzed water or by mixing a predetermined amount of sodium chloride into the electrolyzed water. In the range of 90% by weight Method of preparing a sterilizing cleaning solution and adjusting to the density value. A method for preparing a sterilizing / disinfecting cleaning liquid comprising electrolyzed water and salt as main components, the preparation method comprising an electrolyzed water, which is a dilute aqueous solution containing sodium chloride, and an anode-side electrolysis chamber and a cathode constituting a diaphragm electrolyzer The supply flow rate to the anode side electrolysis chamber is supplied to the side electrolysis chamber more than the supply flow rate to the cathode side electrolysis chamber, and the electrolytically generated acidic water generated in the anode side electrolysis chamber has a pH of 3.0 to 6.5. Adjusting the electrolyzed water having an effective chlorine concentration in the range of 1 to 30 mg / kg at a predetermined pH value in the range, and adjusting the salt concentration of the electrolyzed water in advance to the salt concentration of the electrolyzed water Or by mixing a predetermined amount of sodium chloride with the electrolyzed water, to adjust to a predetermined value in the range of 0.60 to 0.90% by weight.

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