JPH09157900A - Electrolytic reactor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrolytic reactor excellent in oxidizing power by forming the electrolytic reactor so that a liq. to be treated is electrolyzed in the coexistence of ozone. SOLUTION: An electrolytic passage 2 to conduct electrolysis is formed between two electrode plates 3. Both electrode plates 3 are formed of a titanium plate plated with platinum and inserted in the housing 6 of an electrolyzer at a specified distance from each other. The housing 6 is molded of a vinyl chloride resin. A lid 9 is fixed to the opening of the housing 6 with a flat countersunk head screw 10 through a packing 8. A liq. to be treated is circulated in the coexistence of ozone and electrolyzed, and an oxidizing action is exerted into the liq. by the formed active oxygen. The electrolyzed liq. is returned and again electrolyzed, hence the contaminated liq. is oxidized, purified and regenerated as an oxidative liq. to clean and sterilize the material to be cleaned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic reaction apparatus utilizing electrolysis of liquid.

[0002]

2. Description of the Related Art The present inventor has researched and developed in-house an electrolytic reaction apparatus utilizing the electrolysis of a liquid.

This electrolytic reaction device is designed to have an oxidizing effect in the liquid by electrolyzing the liquid, and by exhibiting the liquid purifying function, the object cleaning function and the sterilizing function by the oxidative decomposition, the photograph It can be considered to be used for purification of various kinds of waste liquids such as waste liquids, cleaning and sterilization of foods and various other substances, and production of sterilizing water for fingers and the like in hospitals and dental clinics.

By the way, a stronger oxidizing power is desired for the electrolytic reaction apparatus because it is desired to obtain a sufficient effect in a treatment as short as possible. In addition, when used in relatively narrow places such as hospitals, dental clinics, and photo laboratories, it may be required to reduce the size and weight. For this reason, it is desirable to strengthen the basic oxidization power. Be done.

[0005]

Therefore, the present invention is intended to provide an electrolytic reactor having excellent oxidizing power.

[0006]

In order to solve the above-mentioned problems, the present invention employs the following technical means.

The electrolytic reactor of the present invention is constructed so that the liquid to be treated is electrolyzed to exert an oxidizing action in the liquid, and the liquid is electrolyzed in the presence of ozone. Is characterized by.

In the electrolyzer of the present invention, the liquid to be treated is electrolyzed in the presence of ozone. Therefore, when ozone alone is used to exert an oxidizing action in the liquid, A very large oxidizing power can be obtained as compared with the case where the decomposition alone causes the oxidizing action in the liquid.

It seems that ozone dissolves in water to generate free radicals (.OH) and (.O ₂ H) having strong oxidizing power.

[0010] _{O 3 + H 2 O → HO} 3 + + OH - HO 3 + OH - → 2 · O 2 H O 3 + · O 2 H → · OH + 2O 2 also free radicals · O ₂ H, · OH is at the anode In the generation reaction of free radicals generated by electrolysis,
It is considered to be useful for the initiation of the chain reaction (shortening of the induction period).

Further, the liquid to be treated may be electrolyzed in the state of an aqueous electrolyte solution so that the liquid may have an oxidizing effect. According to this structure, when the liquid to be treated is electrolyzed in the state of the aqueous electrolyte solution, an oxidizing action is exerted particularly on the liquid on the anode side.

It is also possible to add an electrolyte to the liquid to be treated and electrolyze it so that the liquid has an oxidizing effect. According to this structure, when an electrolyte is added to the liquid to be treated for electrolysis, an oxidizing action is exerted particularly on the liquid on the anode side. The electrolyte added to the liquid to be treated is, for example, NaCl, KCl, NaB.
r, KBr, etc. can be selected.

2Cl ⁻ → Cl ₂ + 2e ⁻ Cl ₂ + H ₂ O → HClO + H ⁺ + Cl ⁻ or 2Br ⁻ → Br ₂ + 2e ⁻ Br ₂ + H ₂ O → HBrO + H ⁺ + Br ⁻ Also, electrolyzing the liquid to be treated. It is also possible to exert an oxidizing action in the liquid by the active oxygen generated by.

HClO → H ⁺ + Cl ⁻ + (O) HBrO → H ⁺ + Br ⁻ + (O) It is considered that free radical hydroxyl radical (.OH) is generated as a radical species in the acidic electrolyzed water. The number of hydroxyl radicals seemed to increase with increasing current density.

Further, the produced liquid containing active oxygen can be diluted with water to produce a liquid having bactericidal activity. According to this structure, it is possible to produce a liquid having an arbitrary concentration (for example, residual chlorine concentration or residual bromine concentration) having bactericidal activity.

It is also possible to circulate the liquid to be treated for electrolysis. According to this structure, the liquid to be treated is circulated and electrolyzed to exert the oxidizing action many times in the liquid, so that the oxidizing action can be exerted in the liquid as necessary.

It is also possible to supply a waste liquid as a liquid to be treated, to cause an oxidizing action by electrolysis in the waste liquid to oxidatively decompose the substance to be decomposed in the waste liquid to purify the waste liquid. With this configuration,
The waste liquid can be purified by oxidizing and decomposing the substance to be decomposed in the waste liquid.

Further, the electrolyzed liquid is applied to the object to be cleaned, and the object to be cleaned is washed by the oxidizing action of the liquid.
It can also be configured to sterilize. According to this structure, since the electrolyzed liquid has an oxidizing action and has a sterilizing function, it is possible to clean and sterilize the object to be cleaned. Examples of the object to be washed include foodstuffs and clothing, and examples of the foodstuffs include cut vegetables, fish and meat, and clothing includes sheets and towels.

Further, by returning the contaminated liquid which has been exerted on the object to be cleaned so as to be electrolyzed again, an oxidizing action is exerted on the contaminated liquid to purify it, and at the same time, as a liquid having an oxidizing action again. It is also possible to configure so that the cleaning target is cleaned and sterilized by repeatedly reproducing and exerting it on the cleaning target. According to this structure, when the contaminated liquid is returned again and electrolyzed, the contaminated component in the liquid is oxidatively decomposed and purified by the oxidizing action on the anode side, and the liquid is converted into the liquid having the oxidizing action. It can be regenerated and used repeatedly.

Further, the electrolyzed liquid may be applied to the object to be sterilized, and the sterilizing water having a sterilizing function may be supplied by the oxidizing action of the liquid at the time of use. With this configuration, it is possible to supply sterilizing water for sterilizing fingers and the like in hospitals and dental clinics.

Further, the electric conductivity of the liquid to be electrolyzed is detected by an electric conductivity meter, and an electrolyte aqueous solution is injected and controlled so that the liquid can be electrolyzed in an appropriate electric conductivity state. It can also be configured to.

Further, a basic unit composed of a pair of an electrode plate for electrolyzing a liquid to be treated to exert an oxidizing action on the liquid and a power supply / control device corresponding to the electrode plate is combined. You can also do it. With this configuration, a basic unit consisting of a pair of an electrode plate for electrolyzing the liquid to be treated to exert an oxidizing action in the liquid and a power supply / control device corresponding to the electrode plate is combined, At the time of use, the liquid processing capacity, the oxidizing power, etc. can be adjusted within a certain large range according to various circumstances by the number of basic units driven.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 to 7, the electrolytic reaction apparatus of this embodiment is constructed so that the liquid to be treated is electrolyzed to exert an oxidizing action in the liquid, and the liquid coexists with ozone. I am trying to electrolyze it below.

That is, this electrolytic reaction apparatus is equipped with the ozone generator 1, and ozone is injected into the electrolyte aqueous solution.
Allow to dissolve. Then, water is passed through the electrolysis passage 2 for electrolysis, and a direct current is passed through the electrolysis passage 2 for electrolysis to generate active oxygen in the electrolysis water.

The liquid to be treated is electrolyzed in the state of an aqueous electrolyte solution to exert an oxidizing effect on the liquid. As a result, when the liquid to be treated is electrolyzed in the state of the aqueous electrolyte solution, an oxidizing action is exerted particularly on the liquid on the anode side.

When the liquid to be treated is not an aqueous electrolyte solution, an electrolyte is added to the aqueous solution to cause electrolysis to exert an oxidizing effect on the liquid. When an electrolyte is added to the liquid to be treated and electrolysis is performed, an oxidizing action is exerted particularly on the liquid on the anode side. The electrolyte added to the liquid to be treated is, for example, NaCl, KCl, NaBr, KB.
r or the like can be selected.

The active oxygen produced by electrolyzing the liquid to be treated exerts an oxidizing effect on the liquid.

In this electrolytic reaction apparatus, since the liquid to be treated is electrolyzed in the presence of ozone, when ozone is used alone to oxidize the liquid, or when electrolysis alone is used. As a result, a very large oxidizing power can be obtained as compared with the case where the oxidizing action is exerted in the liquid. That is, when electrolyzing in the presence of ozone, the purification / sterilizing power of the electrolytic solution generated by the electrolysis is improved, and the oxidizing power (purifying action) in the electrode also acts strongly.

Further, this electrolytic reaction apparatus has an electrode plate 3 for electrolyzing a liquid to be treated to exert an oxidizing action on the liquid.
And a basic unit 5 consisting of a pair of a power source / control device 4 corresponding to the electrode plate 3 and the electrode plate 3.

In this device, the number of basic units 5 to be driven is adjusted according to the circumstances such as the processing capacity of the liquid to be processed and the required oxidizing power. With such a configuration, there is an advantage that even a wide variety of objects and applications can be handled by combining a plurality of basic units 5.

Power supply / control device 4 corresponding to each electrode plate 3
Is a circuit board composed of a sequencer and electronic components for control so that a DC constant current output of 5 to 20 A / 5 to 20 V can be obtained by rectifying AC 100 V or 200 V. One large electrode plate It is very cheap compared to driving 3 with one large power supply / control device 4. Then, the basic unit 5 including a pair of the electrode plate 3 and the power supply / control device 4 corresponding to each electrode plate 3 is incorporated in the casing C of the electrolytic reaction device.

Each of the basic units 5 can be individually driven by operating a corresponding illuminated push-button switch (not shown). Thereby, it is possible to arbitrarily operate the plurality of basic units 5 in response to changes in the load of the object.

As shown in FIGS. 1 and 3, an electrolytic passage 2 for electrolysis is formed between two electrode plates 3. Both electrode plates 3 are formed by plating a titanium plate material with platinum, and are fitted into a case 6 of an electrolyzer which is formed in a shape such that they are arranged at a predetermined interval. The distance between the two electrode plates 3 forming the electrolytic passage 2 is about 1 to 1.
It can be set within a range of about 0 mm, preferably within a range of 3 to 6 mm. The housing 6 was formed by molding vinyl chloride resin. As shown in FIG. 3, a spacer 7 is provided between the upper ends of the two electrode plates 3 for providing a precise gap.
Intervenes. A lid 9 is fixed to the opening of the housing 6 with a countersunk screw 10 via a packing 8. Reference numeral 11 is an electrode terminal (an electrode terminal on the other side is not shown), 12 is an O-ring, 13 is a round washer, 14 is a titanium nut, and 15 is a joint.

The aqueous solution containing the electrolyte is made to flow from the hole penetrating below the housing 6. The aqueous solution containing the electrolyte passes through the electrolytic passage 2 between the two electrode plates 3 and flows out from the hole penetrating above the housing 6.

As shown in FIGS. 5 to 7, it is possible to circulate the liquid to be treated for electrolysis.
By circulating the liquid to be treated and electrolyzing it, the oxidizing action can be exerted in the liquid many times, so that the oxidizing action can be exerted in the liquid as much as necessary.

As shown in FIGS. 5 and 7, the electrolyzed liquid may be applied to the object to be cleaned, and the object to be cleaned may be cleaned and sterilized by the oxidizing action of the liquid. Since the electrolyzed liquid has an oxidizing effect and has a sterilizing function, the object to be cleaned can be cleaned and sterilized. Examples of the object to be washed include foodstuffs and clothing, and examples of the foodstuffs include cut vegetables, fish and meat, and clothing includes sheets and towels.

An electric conductivity meter (not shown) is provided,
The electric conductivity of the liquid entering the electrolytic passage 2 is detected, and the electrolyte is injected and controlled by a metering pump so as to maintain the electric conductivity corresponding to the object to be treated. (Embodiment 1) As shown in FIG. 5, in this embodiment, an electrolyzed liquid is configured to be exerted on an object to be sterilized, and when used, sterilizing water having a sterilizing function is supplied by an oxidizing action of the liquid. It is configured to do. Thereby, for example, in a hospital or a dental clinic, sterilizing water for sterilizing fingers can be supplied.

In each basic unit 5, the electrode area of the electrode plate 3 forming the electrolytic passage 2 is set to 1.5 dm ² , and 12 A ×
The electrolysis is performed with an output of 10V = 120W. Then, the liquid containing active oxygen generated by electrolysis is diluted with water to have a sterilizing power of an arbitrary concentration (for example, residual chlorine concentration or residual bromine concentration). That is, it is used after diluting it to an appropriate residual salt concentration according to the use such as washing / sterilization of fingers and washing / sterilization of medical equipment.

By the way, there is an optimum sterilizing water concentration (residual chlorine concentration) for purification and sterilization. For hand washing and sterilization, it is suitable to pour 1.5 liters of sterilized electrolytic diluted water having a residual chlorine concentration of about 20 ppm into a finger for 15 seconds for washing.

In this embodiment, 15 cc of 35% HCl was added to 1 liter of water by the electrolytic reactor.
% NaCl water is added to the electrolyte storage tank 16 as an electrolyte to be added, and 25% NaCl water is mixed with 10 cc of tap water at a rate of 50 cc / min by a quantitative pump P to dissolve ozone and perform electrolysis.

The residual chlorine concentration of 60 cc / min of the electrolyzed water produced here is 2,000 ppm, and when this is further diluted with tap water, a sterilized electrolysis diluted solution of 20 ppm is produced at 6 liters / min. The pH at this time was 6.8 to 7.3.

[0043] Fingers in hospitals, food factories, cafeterias, etc., and surgical tools (tweezers, scalpels, etc.) in hospitals, dental clinics, etc.
As for the cleaning and sterilization, it was possible to sufficiently perform the cleaning and sterilization with only one basic unit 5. Further, in order to produce sterilizing water for washing fingers and the like having a residual chlorine concentration of about 20 to 60 ppm, an output of about 12A × 4V = 48W was sufficient. The washing and sterilizing device for fingers and the like, which is configured by incorporating this electrolytic reaction device, is extremely advantageous in hygiene such that it can prevent secondary infection in the hospital if it is installed at each entrance of each hospital room or each treatment table of the dental clinic. (Embodiment 2) As shown in FIG. 6, in this embodiment, a waste liquid 17 is supplied as a liquid to be treated, and an oxidizing action is exerted in the waste liquid 17 by electrolysis to oxidize and decompose a substance to be decomposed in the waste liquid 17. The waste liquid 17 is purified (COD value reduction, ammonia nitrogen reduction, etc.). As a result, the waste liquid 17 is purified by oxidizing and decomposing the substance to be decomposed in the waste liquid 17.

In this case, since the electrolysis is carried out in the presence of ozone, the anodic oxidation in the electrolytic passage 2 acts more strongly, and when the residual chlorine concentration is the same, the COD value is reduced in a shorter time. It can be done. In addition, COD of the waste liquid 17 with lower salt concentration and lower residual chlorine concentration
It is possible to reduce the value.

When treating the waste liquid 17 having a high electric conductivity, it is advisable to introduce it into the electrolysis passage 2 as it is without adding an electrolyte for electrolysis. Waste liquid with a low residual chlorine concentration 17
Therefore, there is an advantage that it is possible to suppress the generation of harmful chlorine compounds such as trihalomethane generated when the residual chlorine concentration is high. (Embodiment 3) As shown in FIG. 7, the contaminated liquid that has been applied to the object to be cleaned 18 is returned so as to be electrolyzed again to exert an oxidizing effect on the contaminated liquid to purify it. , The object to be cleaned 18 is repeatedly regenerated as a liquid having an oxidizing action and exerted on the object to be cleaned 18
Can also be configured to be washed and sterilized. According to this structure, when the contaminated liquid is returned again and electrolyzed, the contaminated component in the liquid is oxidatively decomposed and purified by the oxidizing action on the anode side, and the liquid is converted into the liquid having the oxidizing action. It can be regenerated and used repeatedly.

The washing water is washed and sterilized in the washing tank 19, and the contaminated washing water is circulated in the electrolytic passage 2 to purify and sterilize it by anodic oxidation, and at the same time, it is regenerated into electrolytic water having an oxidative sterilizing power for washing. Repeat sending to tank 19.

The cleaning wastewater itself generated in the cleaning tank 19 is also purified and sterilized when it is circulated in the electrolytic passage 2 and the odor and coloring components are decomposed, so that after the electrolytic treatment, it is directly discharged to the sewage without any special wastewater treatment. Can be released.

This product is very suitable for cleaning and sterilizing infectious waste such as hospitals and those with a significant odor in food processing plants, and sheets, duvet covers, towels, surgical clothes for hospitals and hotels. Clothing such as can be washed, washed and sterilized.

[0049]

Next, the configuration of the present invention will be described more specifically. (Embodiment 1) As shown in FIG. 5, sterilizing water having a sterilizing function by the oxidizing action of electrolyzed liquid is supplied at the time of use. As the ozone generator 1, a plasma resonance discharge type ozonizer OZ-5 manufactured by Ozone Corporation.
(DC12A, ozone generation capacity is 5 to 15 mg / H). In the figure, F is a flow meter and P is a metering pump.

For comparison, the ozone generator 1 is connected to the electrolytic passage 2
Was provided at the position (A) before and the position (B) after. Moreover, the case where the electrolytic reactor was operated to not operate the ozone generator 1 (C) and the case where the ozone generator 1 was operated without operating the electrolytic reactor (D) were performed.

The sterilizing power of electrolytic sterilized water was evaluated by diluting human stool 50 times with pure water to 500 cc with an Erlenmeyer flask and allowed to stand indoors for 24 hours, and 100 cc of this supernatant was used as a standard bacterial solution. Was performed using.

The amount of sterilized water produced was 0.1 cc and 1.0 cc, the standard bacterial solution was 1.0 cc, and pure water was added to this to make 10 cc (10-fold dilution). A test tube for bacteria test and dilution was used. All contact mixing time with sterilized water is 30
Seconds and repeated 3 times. Control is 1 cc of bacterial solution
Pure water was added to 10 cc (diluted 10 times). E. coli was prepared using desoxycholate agar 37
2 hours at ± 1 ° C, general viable bacteria 3 using standard agar medium
The cells were cultured at 7 ± 1 ° C for 48 hours. Table 1 shows the results.

Regarding the injection of ozone, the resistance at the time of injection is smaller at the position (B) after the electrolytic passage 2 and the ozone concentration tends to be slightly higher. However, nevertheless, the bactericidal effect was significantly higher in the previous position (A) for all three times. The one with ozone added at the position (B) after electrolysis is
There was almost no difference from the case (C) in which ozone was not injected only by electrolysis. However, when ozone injection alone (D) was compared with the control, it was recognized that it alone had some bactericidal activity.

From Table 1, it can be seen that when ozone is injected into the position (A) before electrolysis, the sterilizing power is remarkably improved. The concentration of ozone in the table is the spectrophotometer D from HACH.
Using R2000, the ozone was measured at 600 nm by the ACCUVac ampoule method (Indigo reagent). (Embodiment 2) As shown in FIG. 6, the waste liquid 17 was purified by oxidatively exerting an oxidizing effect on the waste liquid 17 by electrolysis to oxidize and decompose the substance to be decomposed in the waste liquid 17.

As shown in FIG. 6, eight basic units 5 each consisting of an electrolysis passage 2 of 3 dm ² and a power supply control device 4 of 12 A / 10 V are arranged in parallel, and 5 liters of waste water stored in the adjusting tank 20 is disposed. A mixture of the developer waste liquid 17 and the stabilizer waste liquid 17 for printing plate making was treated by electrolytically treating with a pump to reduce the COD value over time. In the figure,
F is a flow meter.

The same ozone generator 1 as in Example 1 was used to inject ozone, and an air pump was used to inject the generated ozone. The concentration of dissolved ozone in the adjusting tank 20 is 0.0
It was 6 to 0.07 ppm.

The mixed waste liquid 17 of the photographic developing waste liquid 17 for printing and the stabilizer waste liquid 17 has a COD value of 6,630 ppm and a pH of 11.
27, the electric conductivity was 37.5 ms / cm. This is transferred to a 5 liter adjusting tank 20 and 50% of 25% NaCl water is added.
After cc was added and mixed, circulation electrolytic treatment was started. 2.
It was circulated between the electrolytic passage 2 and the adjusting tank 20 at a flow rate of 4 liters / minute. During this time, 25
% NaCl water was injected with a metering pump at a rate of 150 cc / hour.

Here, the case where the electrolytic treatment is performed while injecting ozone (A), the case where only the electrolytic treatment is performed without injecting ozone (B), and the case where the electrolytic treatment is not performed but only ozone is injected (C) , And three treatments were performed. The treatment was carried out for 5 hours, and COD values and residual chlorine concentrations were measured by sampling every hour.

For comparison, the electrolytic passage 2 of 20 dm ² was used.
Two of them were arranged in parallel, and 5 liters of the same mixed wastewater was put into the adjusting tank 20 for treatment (D). As a DC power supply device, 100 Amp / 10V manufactured by Mitsubishi Electric Corporation was used.

Each treatment was performed three times, and the average value is shown in Table 2. In addition, A, B, C, and D in the table correspond to the descriptions of (A) to (D) in this example.

The electrode area of (A) to (C) is 24 dm ² , whereas the electrode area of the comparative one (D) is 40 dm 2.
² , the electrode area of the electrolytic passage 2 is considerably small. Therefore, the reduction of the COD value was not sufficient in the electrolytic treatment alone (B), but by injecting ozone (A), almost the same results as in the case of (D) were obtained.

The reduction rate of the COD value is (4,45) in (A).
0-95) / 4,450 for 97.9%, (B) (4,350-320) / 4,350 for 92.6%,
(C) (4,220-3,880) ÷ 4,220 8.0%, (D) (4,300−62) ÷ 4,30
0 was 98.5%.

In the case of (B) where only electrolytic treatment is carried out without injecting ozone, further treatment was continued, but COD was 2 in 6 hours.
The COD value could not be reduced to 100 or less as in (A) and (D), which was almost the same at 260 for 80 and 7 hours and at 255 for 8 hours.

[0064] in the current density in the electrode of the comparison to the ^{100A / 40dm 2 = 2.5A / dm} 2 as the (D),
For (A) to (C), 96 A / 24 dm ² = 12 A /
It was 3 dm ² = 4 A / dm ² . This (A)-(C)
However, the electrode area is small, but the current density is high.

In the case of (B), the reduction of the COD value is 4030/4238 = 95% as compared with the case of (D), which is a good result compared with 24/40 = 60% of the electrode area. (Example 3) When the saline solution is electrolyzed, hydrogen gas and oxygen gas are generated to form bubbles. If the bubbles remain between the electrodes, the efficiency of electrolysis is reduced. That is, when the bubbles stay between the electrodes, the current flow between the electrodes deteriorates, the voltage increases, and the electrolysis efficiency also deteriorates.

In the structure shown in FIG. 3, air bubbles such as hydrogen gas and oxygen gas generated by electrolysis may remain between the electrode plates 3 and current may not flow easily, resulting in a decrease in electrolysis efficiency and damage to the electrodes. possible. Therefore, as shown in FIG. 1, it is preferable to provide a space above the electrode plate 3 and to round the corners thereof so that bubbles do not easily remain between the electrode plates 3 and can easily escape.

Then, as shown in FIG. 5, 25% NaCl
12 cc of water at 10 cc / min and tap water at 50 cc / min
It was electrolyzed as a constant current of mp and diluted with tap water to produce 6 liter / min of electrolytic sterilized water.

In the electrode of the present embodiment, the electrode plate 3 having the upper region with rounded rounded shoulders has an electrolytic efficiency improved by 50% or more as compared with the above-mentioned embodiments. Also,
The structure of this example not only increased the residual chlorine concentration by 50% or more as compared with the examples described above, but also reduced the voltage from 3.09V on average to 2.68V on average. . (Embodiment 4) As shown in FIG. 7, in this embodiment, a washing and sterilizing apparatus for food is formed by using a washing tub of a fully automatic washing machine (SCW-5086C manufactured by Sanyo Co., Ltd.). With this, the objects to be washed such as cut vegetables, fish and cut chicken were processed. As ingredients to be washed, cabbage,
Lettuce, squid, shrimp and small horse mackerel were used. It should be noted that each food material was cut as it was without being washed with water and stored in a refrigerator for one day.

As the ozone generator 1, the same one as that of the above-mentioned embodiment was used. Four basic units 5 were used in parallel. The horizontal cylindrical rotary drum that serves as the food washing tank 19 rotates left and right and is inverted at intervals of 3 to 6 seconds. The drum inversion of the washing tub (40 liters) which becomes the washing tub 19 rotates for 6 seconds,
It rotates forward and backward after stopping for 2 seconds. The rotation speed can be selected from 6, 10, 12, and 15 Hz by an inverter, but in this embodiment, it was set to 10 Hz. The cleaning time can be set to 30 seconds or more and up to 10 minutes, and changed depending on the food material. Although rotation speeds of 100, 150, and 200 Hz can be selected with a draining (dehydration) inverter, draining was performed at 200 Hz in this example.

The circulation pump was 16 liters / minute. F
L is a filter. S is a flow sensor, and when the filter is clogged and the flow rate decreases, an alarm is generated. P is a metering pump. 25% in electrolyte storage tank 16
It stores an electrolyte composed of NaCl. In the figure, V is a voltage sensor, and a metering pump that exceeds a preset voltage is activated to supply 25% NaCl water.

The free residual chlorine concentration of electrolytic sterilized water is 50 pp.
m, and the pH was adjusted to be 6.0 to 6.2. The cut food was put in a washing net and washed. This washing net was washed and sterilized at 50 ppm for 5 minutes and rinsed with water for 1 minute before use, and a circular color washing net having a diameter of 35 cm (made of nylon with polyester fastener, manufactured by Totex) was used.

For comparison, chopped green onions, cucumbers, small horse mackerels and broilers are generally used by immersing them in a 20-liter poly tank of an aqueous solution of sodium hypochlorite (300 ppm), and an electrolytic passage without injecting ozone. 2 and the cleaning tank 19 were simply circulated to electrolyze the circulating water. In the latter method of only performing electrolysis without injecting ozone, the residual chlorine concentration is 80%.
Treated as ppm for 15 minutes or more.

The food was rinsed with tap water, drained, taken out of the washing tank 19, and tested for bacteria. In order to test the bactericidal effect, a surface wiping method of wiping the surface of the treated material with sterile gauze is generally used. Further, in the case of a food material with a skin such as a broiler, sterilization contamination does not stop on the surface but extends from the pores to the inside. In this case, the examination was also carried out by the crushing method. That is, 45 cc of sterilized physiological saline is put in a sterilized bag, the sample to be inspected is put therein, and after mashing well in the bag, 5.0 g is taken and mixed well with physiological saline. The solution was diluted and poured onto the medium of a glass petri dish, and cultured. Escherichia coli was cultured for 48 hours at 37 ± 1 ° C. using desoxycholate agar medium.

The case of this embodiment is (A), the case of electrolyzing without injecting ozone is (B), and the case of conventional dipping treatment with sodium hypochlorite (300 ppm) is (C), The results are shown in Table 3.

In a plastic container containing a sterilizing solution composed of sodium hypochlorite (300 ppm), cut vegetables
Those obtained by washing and sterilizing foods such as fish and meat by immersing them for 15 to 30 minutes do not have a sufficient sterilizing effect. In addition, when the residual chlorine concentration is increased and the food is immersed for a long time like when using an aqueous solution of sodium hypochlorite, green onions will turn yellow and broilers will have a pinkish flesh that will be whitish, significantly reducing the commercial value. I will end up. However, according to this example, a sufficient bactericidal effect could be obtained even in the case of short-term treatment of leeks, fish, meat, etc. at a relatively low residual chlorine concentration of 50 ppm.

[0076]

[Table 1]

[0077]

[Table 2]

[0078]

[Table 3]

[0079]

The present invention is configured as described above and has the following effects.

Since the liquid to be treated is configured to be electrolyzed in the coexistence of ozone, it is possible to provide an electrolytic reaction apparatus having excellent oxidizing power.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view illustrating an embodiment of an electrolytic passage of an electrolytic reaction device of the present invention.

FIG. 2 is an exploded perspective view illustrating an embodiment of the electrolytic reaction device of the present invention.

FIG. 3 is a partially cutaway perspective view illustrating another embodiment of the electrolytic passage of the electrolytic reaction device of the present invention.

FIG. 4 is an explanatory view of a usage state in which six basic units of the electrolytic reaction apparatus of FIG. 1 are used.

FIG. 5 is an explanatory diagram of Embodiment 1 of the electrolytic reaction device of the present invention.

FIG. 6 is an explanatory diagram of Embodiment 2 of the electrolytic reaction device of the present invention.

FIG. 7 is an explanatory diagram of Embodiment 3 of the electrolytic reaction device of the present invention.

[Explanation of symbols]

 3 Electrode plate 4 Power supply / control device 5 Basic unit 17 Waste liquid 18 Cleaning target

Claims (12)

[Claims] 1. An electrolytic reaction characterized in that the liquid to be treated is electrolyzed to exert an oxidizing action in the liquid, and the liquid is electrolyzed in the presence of ozone. apparatus. 2. The electrolytic reaction apparatus according to claim 1, wherein the liquid to be treated is electrolyzed in the state of an aqueous electrolyte solution so as to exert an oxidizing action in the liquid. 3. The electrolytic reaction apparatus according to claim 1, wherein an electrolyte is added to the liquid to be treated and electrolyzed to exert an oxidizing action in the liquid. 4. The electrolytic reaction apparatus according to claim 1, wherein the active oxygen produced by electrolyzing the liquid to be treated has an oxidizing effect on the liquid. 5. The electrolytic reaction apparatus according to claim 4, wherein the produced liquid containing active oxygen is diluted with water to produce a liquid having sterilizing power. 6. The electrolytic reaction apparatus according to claim 1, wherein the liquid to be treated is circulated to perform electrolysis. 7. A waste liquid is supplied as a liquid to be treated, and the waste liquid is purified by oxidatively decomposing a substance to be decomposed in the waste liquid by causing an oxidizing action by electrolysis in the waste liquid. The electrolytic reaction apparatus according to 1. 8. The electrolytic reaction apparatus according to claim 1, wherein the electrolyzed liquid is applied to the object to be cleaned, and the object to be cleaned is cleaned and sterilized by the oxidizing action of the liquid. 9. A liquid having an oxidizing effect on the contaminated liquid is purified by returning the contaminated liquid that has been contaminated by the object to be cleaned so as to be electrolyzed again. 9. The object to be cleaned is washed and sterilized by repeatedly reproducing and exerting it on the object to be cleaned.
The electrolytic reaction apparatus described. 10. A sterilizing water which is configured to exert an electrolyzed liquid on an object to be sterilized and which has a sterilizing function by an oxidizing action of the liquid when used.
7. The electrolytic reaction device according to any one of 1. 11. A method of detecting the electric conductivity of a liquid to be electrolyzed by an electric conductivity meter, and controlling the injection of an aqueous electrolyte solution so that the liquid can be electrolyzed in an appropriate electric conductivity state. Item 11. The electrolytic reaction apparatus according to any one of Items 1 to 10. 12. A basic unit comprising a pair of an electrode plate for electrolyzing a liquid to be treated to exert an oxidizing action in the liquid and a power supply / control device corresponding to the electrode plate. 11. The electrolytic reaction device according to any one of 1 to 11.