JP2003080250A - Equipment for producing electrolytic water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment for producing electrolytic water by which of hypochlorous acid concentration is stably monitored for both a user consuming a large quantity of electrolytic water and a user consuming a little quantity of it. SOLUTION: An electrolytic water output of an electrolytic bath 11 is provided with a flow passage for sampling electrolytic water from first solution tanks 61a and 61b each having a recessed part and a T-shaped hermetically sealed structure, and a flow passage for sampling the electrolytic water from an acidic water tank 86a and an alkaline water tank 86b which store the electrolytic water outside a strong acidic water output port 17a and outside a strong alkaline water output port 18a, respectively. Three-way changing valves 85a and 85b are switched to send a sample from a mixing part 60a to a measuring part 30 and to measure its concentration. Air bubbles are not sucked in the sampling by the recessed part in the T-shaped hermetically sealed structure, and a vapor/liquid separation is carried out within the tanks in the sampling from the tanks 86a and 86b. Thereby, the air bubbles are not sucked, and the monitoring of the concentration is stably carried out.

Description

Description [0001] The present invention relates to the medical and food industries,
In connection with electrolyzed water production equipment used in fields such as agriculture,
In particular, the present invention relates to an electrolyzed water producing apparatus for monitoring the concentration of hypochlorous acid contained in the generated strongly acidic water. 2. Description of the Related Art An electrolyzed water producing apparatus produces strongly acidic water on the anode side and strong alkaline water on the cathode side by electrolyzing chlorine-containing water. When the water contains chlorine, the strongly acidic water generated on the anode side contains hypochlorous acid having a sterilizing ability. In particular, when electrolysis is performed by adding sodium chloride, potassium chloride, or the like to water, the strongly acidic water generated on the anode side contains several tens of hypochlorous acid.
It is known to have a strong bactericidal effect, containing low ppm (2.5 to 3.0), high ORP (the ORP representing the oxidation-reduction potential is about +1100 mV). The strongly acidic water produced there is used in the medical field as a product that is effective in disinfecting hands in hospitals and disinfecting MRSA that causes hospital infections. In the food industry, disinfection, disinfection of kitchen appliances, and marine products processing are used. For sterilization of fish and O-157. In the field of agriculture, strongly acidic water obtained by electrolyzing water added with potassium chloride is used for disinfection of pathogenic bacteria in house cultivation (melon, vegetables, pears, flowers, etc.), sterilization of rice fir, etc. There is a movement to reduce the amount of pesticides used and promote environmentally friendly agriculture. FIG. 4 shows a conventional apparatus for producing electrolyzed water. The electrolyzed water producing apparatus includes an electrolyzed water generating unit 10, a measuring unit 30, and a mixing unit 60 for sending a mixed liquid for measurement to the measuring unit 30. The electrolyzed water generator 10 has an electrolyzer 11 into which tap water to which about 20 mmol of sodium chloride is added is introduced through a valve 16. A DC voltage source 14 is connected between the anode 12 and the cathode 13 which are disposed with the diaphragm 15 interposed therebetween. The strongly acidic water generated on the side of the anode 12 is taken out from the strongly acidic water outlet 17, and the strongly alkaline water generated on the side of the cathode 13 is taken out from the strongly alkaline water outlet 18. Used for applications. Furthermore, these outlets 17, 18
Is provided with a branch for measurement, and a valve 21,
A part of the strongly acidic water and a part of the strongly alkaline water are taken out through 22 for measurement. [0004] The strongly acidic water and the strongly alkaline water sampled in this manner are supplied to the liquid tank 6 of the first liquid tank 61 of the mixing section 60.
After being guided to each of 2 and 63, it is guided to the second liquid tank 67 and mixed. The first and second two liquid tanks 61 and 67 are both liquid tanks that are open to the atmosphere, and are resistant to acidic water.
For example, it is made of a vinyl chloride-based material. The first liquid tank 61 is a two-tank type having independent liquid tanks 62 and 63, respectively, and each of the liquid tanks 62 and 63 has a large area open to the atmosphere (upper surface). Each of the liquid tanks 62 and 63 is provided with an inlet and an outlet, and the strongly acidic water and the strong alkaline water introduced from the inlet are temporarily stored in the liquid tanks 62 and 63, respectively. [0005] The strongly acidic water generated in the electrolytic cell 11 contains chlorine gas and oxygen gas, and the strongly alkaline water contains hydrogen gas, and both are a gas-liquid mixture containing a large amount of gas. Bubbles in these liquids vary in size from as large as 10 mm in maximum diameter to as small as 1 mm or less. Such strongly acidic water and strongly alkaline water are drawn out from the electrolytic cell 11 at a pressure close to that of raw water such as tap water.
2, 63, each of which is temporarily stored and returned to the atmospheric pressure, large bubbles having a diameter of about 2 mm to 10 mm immediately collapse, and the gas trapped in the bubbles is released to the surrounding atmosphere. . Therefore, the suction tube 64,
By inserting 65 into each of the liquid tanks 62 and 63 and sucking the supernatant liquid, strong acidic water and strong alkaline water from which large bubbles have been removed can be taken out. The suction tubes 64 and 65 are made of a vinyl chloride tube, a fluororesin tube, or the like.
By using the liquid 74, the strongly acidic water and the strongly alkaline water can be sucked at predetermined flow rates, respectively, and guided to the second liquid tank 67. The second liquid tank 67 is an open-to-atmosphere liquid tank having an open upper surface, like the first liquid tank 61. Into the second liquid tank 67, the tip of a suction tube 68 provided with a filter 69, such as a vinyl chloride type or a fluororesin, is inserted. The liquid in the suction tube 68 is sucked at a predetermined flow rate by the ironing pump 75. The liquid mixture thus sucked is sent to the flow cell 31 of the optical measuring unit 30 at a predetermined flow rate. The second liquid tank 67 is provided with a stirrer 71 which is rotated by a stirring motor 72, whereby the introduced strongly acidic water and strongly alkaline water are forcibly stirred and mixed. And strong alkaline water are sufficiently mixed. This stirrer 71
A motor in which a flat propeller is attached to the tip of the rotating shaft of the motor 72 is used, and is disposed between the tips of the suction tubes 64 and 65 and the tip of the suction tube 68. The strong acid water and the strong alkaline water sucked from the first liquid tank 61 contain a large number of fine bubbles each having a diameter of 1 mm or less, but the bonding is repeated during the passage through the suction tubes 64 and 65 so that the diameter is 1 to 2 mm. Grows into bubbles before and after.
Although the mixed liquid contains these bubbles, the second liquid tank 6
By being introduced into 7, the bubbles are released into the atmosphere. Since the liquid mixture is sucked in this way by the suction tube 68, the liquid mixture from which relatively small bubbles have been removed can be sent to the measuring unit 30. Here, a fine mesh filter 69 is attached to the tip of the suction tube 68.
Is attached, so that air bubbles, precipitated salts, and the like are not sucked into the suction tube 68. That is, air bubbles having a diameter of about 1 to 2 mm remaining in the liquid mixture in the second liquid tank 67 cannot be pierced through the filter 69 and are diffused into the atmosphere. As the filter 69, for example, a resin such as a fluororesin or nylon, a cloth such as a cotton cloth, or a paper such as a filter paper is used. The measuring section 30 includes a flow cell 31 made of quartz glass or the like to which a mixed solution is sent, a light source 32 disposed to sandwich the flow cell 31, a photocell 36, and a photocell 3
7 is provided. As the light source 32, for example, a xenon flash lamp or a deuterium lamp is used. This light passes through the flow cell 31, is split into two by a beam splitter 33 such as a quartz plate, and is guided to photocells 36 and 37.
Optical filters 34 and 35 are attached to the photocells 36 and 37, and one of the optical filters 34 has a main transmission wavelength 2.
A band-pass filter (or a sharp cut filter) that passes light in a long wavelength range of 400 nm or more is used as the other optical filter 35. The photocells 36 and 37 are composed of, for example, Si photocells and the like, and detection signals (electric signals) are respectively sent to photometric electric circuits (not shown) to be converted into absorbances. An arithmetic process for conversion to the hypochlorous acid concentration is performed. That is, the absorbance for light having a wavelength of 292 nm and 400 n
The difference from the absorbance for light having a long wavelength of m or more is determined. This absorbance difference is converted into a hypochlorous acid concentration by multiplying by a correction factor corresponding to the mixture ratio, and the concentration is displayed on a display device or the like. The conventional apparatus for producing electrolyzed water is configured as described above. However, in order to use a large amount of electrolyzed water in a short time by using the electrolyzed water generator 10, In many cases, an acidic water tank and an alkaline water tank are provided outside. In this case, install an acidic water tank and an alkaline water tank at a high place and take out the electrolyzed water using gravity, and connect a large pump to the acidic water tank and the alkaline water tank to send a larger amount of liquid more strongly There is a method.
At this time, sampling of the sample is performed from the acidic water tank and the alkaline water tank. On the other hand, the electrolyzed water generator 1
0 is placed immediately beside the sink of the sink, and in the case of a user who can use electrolyzed water coming out of the electrolytic cell 11, for example, about 1 to 5 liters / minute, a strong acid water outlet 17 of the electrolytic cell 11 can be used. Then, the sample is sampled at the strong alkaline water outlet 18. As described above, a problem that both a user who uses a large amount of electrolyzed water and a user who uses a small amount of electrolyzed water requires a sample sampling method capable of stably measuring the concentration of hypochlorous acid. There is. The present invention has been made in view of such circumstances, and is intended for both users who use a large amount of electrolyzed water and users who use only a small amount of electrolyzed water.
An object of the present invention is to provide an electrolyzed water production apparatus capable of stably measuring hypochlorous acid concentration. [0010] In order to achieve the above object, the apparatus for producing electrolyzed water of the present invention comprises two electrodes and applies a positive / negative voltage to each of the electrodes. And a first liquid tank in which water respectively guided from both electrode sides is introduced into separated tanks, and water in each tank is independently sent. First and second liquid feeding means, a second liquid tank in which the liquids are stored and mixed by forcible stirring, and a liquid mixture in the second liquid tank at a predetermined flow rate. Liquor third
Wherein the electrolytic solution is provided with a liquid sending means and a measuring means for measuring the light absorption intensity of the mixed solution sent by the third liquid sending means in a wavelength range of 260 nm to 330 nm. A first liquid tank having a T-shaped closed structure is provided near each outlet of the tank, and a pipe for sampling from a sample of the first liquid tank and a sample of an acidic water tank and an alkaline water tank provided outside the electrolytic tank are provided. A pipe for sampling and a three-way switching valve or a three-way switching cock for respectively switching sampling from both pipes are provided, and liquid is sent by the first and second liquid sending means. The apparatus for producing electrolyzed water of the present invention is constructed as described above, and has two first liquid tanks having a small T-shaped closed structure for acidic water and alkaline water near both outlets of the electrolytic cell. Provided, two pipes each sampling from a T-shaped concave part, and two pipes capable of sampling from an acidic water tank and an alkaline water tank provided outside the electrolytic cell, and switching the respective pipe flow paths. By providing a three-way switching valve or a three-way switching cock capable of sampling, both sampling from the first liquid tank and sampling from the acidic water tank and the alkaline water tank can be switched and used as necessary. When sampling from the first liquid tank, sampling is performed from the T-shaped concave portion, so that bubbles are not sucked, and
When sampling from an acidic water tank and an alkaline water tank provided outside, gas-liquid separation is performed in the tank, and the influence of air bubbles can be almost eliminated. Therefore, stable measurement can be performed. An embodiment of the apparatus for producing electrolyzed water according to the present invention will be described with reference to FIG. FIG. 1 is a schematic block diagram of an electrolyzed water producing apparatus according to the present invention. The present electrolyzed water producing apparatus includes a raw water supply unit 80 for mixing and supplying soft water and salt water,
Electrolyzed water generator 10 for electrolyzing raw water into strongly acidic water and strongly alkaline water, first liquid tanks 61a and 61b having a T-shaped closed structure for sampling both electrolyzed waters, and storing and sterilizing / disinfecting both electrolyzed waters outside. An acidic water tank 86a and an alkaline water tank 86b used for sampling, and a three-way switching valve capable of switching between sampling from the acidic water tank 86a and the alkaline water tank 86b and sampling from the first liquid tanks 61a and 61b. 85a, 85b, first and second liquid feeding means comprising ironing pumps 73, 74 for feeding the sampling liquid via the three-way switching valves 85a, 85b, and a second means for mixing and stirring the fed electrolytic water. A liquid tank 67;
It comprises a third liquid sending means comprising an ironing pump 75 for sending the mixed solution, and a measuring unit 30 for measuring the absorbance of the sent mixed solution and monitoring the hypochlorous acid concentration. The raw water supply unit 80 mixes the soft water from the water softener 81 and the salt water fed from the salt water tank 82 by the liquid feed pump 83 with a mixer 84, and electrolyzes the raw water to which about 20 mmol of sodium chloride is added. It is supplied to the tank 11. The raw water is supplied from the raw water supply unit via a valve 16 to the electrolytic water generation unit 10.
2. A cathode 13 is provided, and a DC voltage is applied from a DC voltage source 14 to electrolyze chlorine-containing water to generate strongly acidic water on the anode 12 side and strong alkaline water on the cathode 13 side. The first liquid tanks 61a and 61b are installed at respective electrolytic water outlets provided on both electrode sides of the electrolytic tank 11, have a T-shaped hermetic structure, and have a sampling recess at the lower center. The material is made of hard vinyl chloride. FIG. 2 shows the first liquid tanks 61a and 61b.
(A) is a figure which shows the cross section of a front, (b) is a figure which shows a side surface, (c) is a figure which shows a bottom surface. First liquid tank 61a, 6
1b is composed of a T-shaped case 91c, an electrolytic cell connection port 91a, an electrolytic water outlet 91b, a concave metal fitting 90a, and a sampling pipe 92, and the electrolytic water generated in the electrolytic cell 11 is introduced from the electrolytic cell connection port 91a. The liquid passes through the liquid tank chamber 91 of the T-shaped case 91c and passes through the electrolytic water outlet 91b (the strong acid water outlet 17).
a, stored in an acidic water tank 86a and an alkaline water tank 86b provided outside from a strong alkaline water outlet 18a). A concave fitting 90a is attached to the lower part of the liquid chamber 91, and the sampling is performed by the sampling pipe 92 from the sampling chamber 90 in the concave, and the sampling port 6
4a and 65a are sent to three-way switching valves 85a and 85b via valves 21 and 22. And the first liquid tank 61
Since a and 61b have a closed structure, a lid is placed on the upper part of the electrolytic cell 11 and the first liquid tanks 61a and 61b are connected from the electrolytic water outlet.
Between the external acidic water tank 86a and the alkaline water tank 86b through a closed structure, and a water pressure of about 1 kgf / cm ² is applied to the electrolytic water taken out from the water softener 81 through the valve 16 through the mixer 84. The acid water tank 86, which can be lifted up to about 3m, is provided outside.
The problem does not occur even if the installation height of a and the alkaline water tank 86b is increased. Thereby the tanks 86a and 86b
The electrolyzed water stored in the
The water will flow out to the sink sink. The strongly acidic water from the electrolytic cell 11 contains chlorine gas and oxygen gas in addition to the liquid component, and the strongly alkaline water also contains hydrogen gas in addition to the liquid component. That is, here, the sampling place is set to the sampling chamber 90 in the concave portion below the T-shaped case 91c.
It has been demonstrated that it is not affected by large bubbles since it is sampled from. An acidic water tank 86a and an alkaline water tank 8
Reference numeral 6b denotes a tank provided for storing strong acidic water and strong alkaline water outside through the first liquid tanks 61a and 61b. In a small-sized electrolyzed water production apparatus, the acidic water tank 86a
Capacity is 50-60 liters, alkaline water tank 86
The capacity of b is about 20 liters, and is arranged at a high position above the electrolyzed water generating unit 10 so that the force of the electrolyzed water at the position of the sink of the sink becomes strong. And the acidic water tank 86a and the alkaline water tank 8
6b are provided with sampling pipes 87a and 87b, connected to three-way switching valves 85a and 85b,
a, Sampling can be performed from the alkaline water tank 86b. FIG. 3 shows each tank 86 of the present electrolyzed water producing apparatus.
a and 86b are shown. (A) is a case where the electrolyzed water is consumed on a small scale. The tanks 86a and 86b are arranged vertically to make the floor area effective, and the acidic water tank 86a and the alkaline water tank 86b are arranged at the top. It is placed and the water is improved by gravity. (B) is a case where the electrolyzed water is consumed on a large scale, in which a large acidic water tank 86a and a large alkaline water tank 86b are arranged horizontally, and the liquid is sent by a large pump. The three-way switching valves 85a and 85b are provided for sampling from sampling pipes 87a and 87b of an acidic water tank 86a and an alkaline water tank 86b provided outside.
The three-way valve switches between sampling from the first liquid tanks 61a and 61b. The switching is performed manually or automatically. Then, they are connected to the suction tubes 64 and 65 of the first and second liquid feeding means. Sterilization using a large amount of electrolyzed water
When disinfection is performed, an acidic water tank 86a and an alkaline water tank 86b are provided outside, and the electrolytic water generated in the electrolytic tank 11 is temporarily stored in the acidic water tank 86a and the alkaline water tank 86b, and an intake port thereof is provided. It is used by leading to the sink of the sink. Sampling in such a case,
Open type acidic water tank 86a, alkaline water tank 86b
Since the gas-liquid separation of the electrolyzed water is sufficiently performed, there are no large bubbles, and sampling is often performed from this. On the other hand, if only a small amount of electrolyzed water is used, for example,
For a user who has a sufficient production amount of electrolyzed water of about 1 to 5 liters / min, the acid water tank 86a and the alkaline water tank 86b are not provided outside and the strong acid water outlet 17a of the electrolytic cell 11 is directly provided. The electrolytic water is led from the strong alkali outlet 18a to the sink of the sink, and is used for sterilization and disinfection. In this case, sampling is performed from the first liquid tanks 61a and 61b. Switching between the two samplings is performed using the three-way switching valves 85a and 85b. First liquid tank 61
a, 61b, the electrolytic cell 11
The concentration of hypochlorous acid in the electrolyzed water coming out of can be monitored every moment. On the other hand, when sampling is performed from the acidic water tank 86a and the alkaline water tank 86b, a time average value of the concentration of hypochlorous acid in the electrolytic water stored in the tank is obtained. In this case, since gas-liquid separation is substantially performed in the tank, there is almost no influence of bubbles, but the response time becomes considerably long because the long electrophoresis water as a sample is sucked with the fluorine resin suction tube. However, even if the response time is somewhat long, there is substantially no problem. The first and second liquid feeding means include suction tubes 64 and 65 of the mixing section 60a and an independent ironing pump 7
3 and 74. The suction tubes 64 and 65 are made of a vinyl chloride tube, a fluororesin tube, or the like. By using independent ironing pumps 73 and 74, the strong acid water and the strong alkaline water are suctioned at predetermined flow rates, respectively, and the second liquid is sucked. It can be led to the tank 67. The second liquid tank 67 is an open-to-atmosphere type liquid tank having an open upper surface, and is provided with a stirrer 71 which is rotated by a motor 72 for stirring.
As a result, the introduced strongly acidic water and strongly alkaline water are forcibly stirred and mixed, and the strongly acidic water and strongly alkaline water are sufficiently mixed. As the stirrer 71, one having a flat propeller attached to the tip of the rotation shaft of the motor 72 is used, and is disposed between the tips of the suction tubes 64 and 65 and the tip of the suction tube 68. The third liquid sending means is configured such that the tip of a suction tube 68 such as a vinyl chloride-based resin or a fluororesin provided with a filter 69 is inserted into a second liquid tank 67, and the liquid in the suction tube 68 is discharged to a predetermined position by an ironing pump 75. Then, the suctioned mixed liquid is sent to the flow cell 31 of the optical measuring unit 30 at a predetermined flow rate. The strong acid water and the strong alkaline water sucked from the first liquid tanks 61a and 61b contain a large number of fine bubbles each having a diameter of 1 mm or less.
During the passage of 4, 65, the bonding is repeated to grow into bubbles having a diameter of about 1 to 2 mm. These bubbles are contained in the liquid mixture, but when introduced into the second liquid tank 67, the bubbles are diffused into the atmosphere. Since the liquid mixture is sucked in this way by the suction tube 68, the liquid mixture from which relatively small bubbles have been removed can be sent to the measuring unit 30. Here, since the filter 69 having a fine mesh is attached to the tip of the suction tube 68, bubbles, precipitated salts and the like are not sucked into the suction tube 68. That is, air bubbles having a diameter of about 1 to 2 mm remaining in the liquid mixture in the second liquid tank 67 cannot be pierced through the filter 69 and are diffused into the atmosphere. As the filter 69, for example, a resin such as a fluororesin or nylon, a cloth such as a cotton cloth, or a paper such as a filter paper is used. The measuring section 30 is the same as the conventional one, and is made of a flow cell 31 made of quartz glass or the like to which a mixed solution is sent.
And a light source 32, a beam splitter 33, a photocell 36 provided with an optical filter 34 on the front surface, and a photocell 37 provided with an optical filter 35 on the front surface. As the light source 32, for example, a xenon flash lamp or a deuterium lamp is used. This light is transmitted through the flow cell 31, partially reflected by the beam splitter 33 such as a quartz plate, transmitted through the rest, and guided to the photocells 36 and 37. Optical filters 34 and 35 are attached to the photocells 36 and 37. One optical filter 34 is composed of an interference filter having a main transmission wavelength of 292 nm, and the other optical filter 35 transmits light in a long wavelength region of 400 nm or more. A band pass filter (or a sharp cut filter) or the like is used. Photocell 3
Numerals 6 and 37 are, for example, Si photocells and the like, and the detection signals (electric signals) are respectively sent to electric circuits (not shown) to be converted into absorbances. An arithmetic process for conversion into an acid concentration is performed. That is, by the two-wavelength measurement method,
The difference between the absorbance for light having a wavelength of 292 nm and the absorbance for light having a long wavelength of 400 nm or more is determined. This absorbance difference is a correction factor corresponding to the mixing ratio,
After being converted to the concentration of hypochlorous acid by multiplication, the concentration is displayed on a display device or the like. The apparatus for producing electrolyzed water according to the present invention is constructed as described above.
A first liquid tank provided with a concave portion having a closed-type structure is provided, and a flow path for sampling from the concave portion and a flow path for sampling from an acidic water tank and an alkaline water tank provided outside the electrolytic cell are provided. A switching valve or a three-way switching cock is provided so that it can be switched and used as necessary.When sampling from the first liquid tank, sampling is performed from the T-shaped recess, so that air bubbles are not sucked, and In the case of sampling from a tank provided outside, since gas-liquid separation is performed in the tank, sampling can be performed with almost no influence of bubbles. Therefore, stable measurement can be performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing one embodiment of an electrolyzed water producing apparatus of the present invention. FIG. 2 is a view showing the structure of a first liquid tank of the apparatus for producing electrolyzed water of the present invention. FIG. 3 is a view showing an arrangement of an electrolyzed water producing apparatus of the present invention and peripheral devices thereof. FIG. 4 is a view showing a conventional electrolyzed water producing apparatus. [Description of Signs] 10 ... Electrolyzed water generator 11 ... Electrolyzer 12 ... Anode 13 ... Cathode 14 ... DC voltage source 15 ... Diaphragm 16, 21, 22 ... Valve 17, 17a ... Strong acidic water outlet 18, 18a ... Strong Alkali outlet 30 Measurement unit 31 Flow cell 32 Light source 33 Beam splitters 34 and 35 Optical filters 36 and 37 Photocells 60 and 60a Mixing units 61, 61a and 61b First liquid tanks 62 and 63 Liquid Tanks 64, 65, 68 Suction tubes 64a, 65a Sampling port 67 Second liquid tank 69 Filter 71 Stirrer 72 Motors 73, 74, 75 Ironing pump 80 Raw water supply unit 81 Water softener 82 Salt water tank 83 ... liquid feed pump 84 ... mixers 85a, 85b ... three-way switching valve 86a ... acid water tank 86b ... alkaline water tanks 87a, 87b ... sampling pipe 90 ... sun Ring tube 90a ... recess fitting 91 ... liquid tank chamber 91a ... electrolyzer connection port 91b ... electrolyte water taking port 91c ... T-shaped case 92 ... sampling chamber

   ────────────────────────────────────────────────── ─── Continuation of front page    F term (reference) 2G059 AA01 BB05 CC01 DD12 EE01                       EE11 GG10 HH02 HH03 HH06                       JJ02 JJ03 JJ22 KK01 MM01                       NN10                 4D061 DA03 DB07 DB08 EA02 EB01                       EB04 EB12 EB37 ED13 GA20

Claims (1)

Claims: 1. An electrolytic cell having two electrodes and capable of electrolyzing chlorinated water by applying a positive or negative voltage to each electrode, and an electrolyzer which is connected from both electrode sides. A first liquid tank into which separated water is introduced into each of the separated tanks; first and second liquid sending means for independently sending the water in each tank; A second liquid tank that stores and mixes them by forcible stirring, a third liquid sending unit that sends a mixture of the second liquid tank at a predetermined flow rate, and a third liquid sending unit. For the mixed solution sent, the wavelength 26
In an electrolyzed water producing apparatus provided with a measuring means for measuring light absorption intensity in a range of 0 nm to 330 nm, a first liquid tank having a T-type closed structure is provided near each outlet of the electrolytic cell,
A pipe for sampling from a sample in the first liquid tank, a pipe for sampling from a sample in an acidic water tank and an alkaline water tank provided outside the electrolytic cell, and a three-way switching valve for switching sampling from both pipes or An electrolyzed water production apparatus, comprising a three-way switching cock and feeding liquid by the first and second liquid feeding means.