KR100634760B1 - Apparatus for producing sterilizing and oxidizing water by electrolysis cell used overpotential electrode - Google Patents

Abstract

The present invention relates to an apparatus for producing sterile oxidized water using an overpotential electrode electrolytic cell, comprising: a housing having a screw portion formed thereon and a tapered portion formed under the screw portion; and an ion exchange membrane or a porous neutral membrane installed inside the housing. A unit electrolysis cell having a separator, a mesh electrode composed of a positive electrode and a negative electrode made of titanium material, which are in close contact with both sides of the separator and provided with a power supply terminal on the upper side, and in parallel with the power connection terminals of the plurality of unit electrolysis cells; A cap coupled to the positive and negative wire parts for supplying power to the unit electrolytic cell, the cap coupled to the threaded portion of the housing to be sealed, and fixing means for fixing the positive and negative wire parts to an upper portion thereof; The unit electrolysis cell is secured by penetrating the unit electrolysis cell and both ends of the unit taper. And a spacer positioned between the unit electrolytic cells so that the unit electrolytic cells are spaced apart from each other, a support portion made of a non-conductor, and raw water flow into a lower portion of the unit electrolytic cells installed in the housing. It is provided with an inlet, a diffuser for distributing the raw water from the lower portion of each of the unit electrolytic cells and an outlet for discharging the sterilized oxidized water reacted by the electrolytic cell to the outside of the housing is provided do.

 Overpotential electrode, unit electrolytic cell, electrolytic cell, spacer, support, exchange, sterilized oxidized water

Description

Apparatus for producing sterilizing and oxidizing water by electrolysis cell used overpotential electrode}

1 is a partial cross-sectional perspective view showing a sterilized oxidation water production apparatus using an overpotential electrode electrolytic cell according to the present invention.

2 is a front view and a side view showing a unit electrolytic cell according to the present invention.

Figure 3 is a block diagram showing an H-type bridge for switching the polarity of the overpotential electrode according to the present invention.

Figure 4 is an exploded cross-sectional view showing a form for fixing the unit electrolytic cell of the present invention.

Figure 5 is a partial cross-sectional perspective view showing a sterilized oxidation water production apparatus using an overpotential electrode electrolytic cell according to an embodiment of the present invention.

Figure 6 is a partial cross-sectional perspective view showing a sterilized oxidation water production apparatus using an overpotential electrode electrolytic cell according to another embodiment of the present invention.

7 is a cross-sectional view showing a state in which the cap of Figure 6 is fixed to the housing.

8 is a schematic view showing the entire system of the sterilized oxidation water production apparatus.

<Explanation of symbols for main parts of the drawings>

10: housing 11: threaded portion

12: taper 20: unit electrolysis cell

21: separator 22: mesh electrode

23: power connection terminal 30: positive and negative wires

40: cap 41: fixing means

50: support part 51: spacer

60: diffuser 61: inlet

70: outlet 80: concentration adjusting unit

90: H type bridge 91: transistor

100: cooler 110: rectifier

120: controller 130: solenoid valve

140: salt tank 141: metering pump

150: oxidized water tank 151: metering pump

152: level switch 200: sterile oxidized water production apparatus

The present invention relates to an apparatus for producing sterile oxidized water using an overpotential electrode electrolytic cell, and more particularly, an overpotential electrode electrolytic cell for generating raw water into sterile oxidized water using an electrolytic cell composed of an electrode capable of transferring an overpotential. It relates to a sterilized oxidation water production apparatus using.

In order to protect human health and property from bacterial diseases and to create a clean environment, it is very important to be sanitary and safe from contamination with pathogenic microorganisms. Accordingly, various methods for supplying sterilized water by an oxidizing agent (ozone, residual chlorine NaOCl, peroxide, hydroxyl radical, etc.) having strong oxidizing power have been studied. The method of supplying sterilized water by the oxidizing agent is widely applied to various industries such as drinking water field (home, group food service, simple water purification facility), food industry, effluent sterilization, cooling tower, heavy water sterilization, livestock farming, health hygiene, waste water treatment, etc. And the demand is also increasing.

As the method of sterilization and deodorization by the oxidizing agent, there are a photooxidation method using ultraviolet rays, an oxidation method using chlorine injection or sodium hypochlorite generator, and a method of applying ozone generator.

In the case of the photo-oxidation method using ultraviolet light, the light energy of ultraviolet light is very high, but the amount of ultraviolet light that can be secured by an artificial light source is small compared to the amount of the pollutant, and the energy effect is not so good to be used alone. have.

The injection of solid chlorine or sodium hypochlorite in these oxidants can be used only in small and simple water purification facilities and chlorine gas can be used in large water purification plants with professional managers, but it has the disadvantage of generating chlorine by-products.

As ozone generators, there are high voltage silent discharge and electrolysis methods.

The high voltage silent discharge type is less used than the sterilization efficiency compared to the device.

The electrolytic oxidizer generating device consumes a lot of electric energy, and the device is large and is not easy to install, and salt is generated on the surface of the electrode, so the efficiency is lowered. There was a problem that was not easy. In particular, when the electrode is replaced, it takes a long time to replace the electrode contained in the housing to take out the electrode from the housing and replace it. Accordingly, there is a problem that the increase in labor costs, the operation rate is lowered because the operation of the device must be stopped for a long time due to the increase in replacement time. Moreover, when using the electrode which suppresses generation | occurrence | production of a salt, there existed a problem that an electrode was expensive.

In the conventional electrolytic oxidizer generator, since the positive electrode and the negative electrode use different materials, calcium or magnesium oxide in the water is precipitated as a salt on the negative electrode, which interrupts the flow of current and decreases the decomposition efficiency. There was a problem that requires a lot. In addition, in order to remove these salts, there is a troublesome problem of using a method of removing the salt from the surface of the electrode by washing the chlorides deposited on the surface of the electrode with an acid as an acid or supplying high electricity instantly.

The present invention has been made to solve the above problems, the object of the present invention is to switch the poles of the DC power applied to the electrode to prevent the degradation of efficiency caused by salt generated on the electrode surface even for a long time It is to provide a sterile oxidized water production apparatus using the upper electrode electrolytic cell.

Another object of the present invention is to provide an apparatus for producing sterile oxidized water using an overpotential electrode electrolytic cell that is easy to install and replace.

Still another object of the present invention is to provide an apparatus for producing sterile oxidized water using an overpotential electrode electrolytic cell which can be used economically even if the electrode is frequently replaced.

In order to achieve the above object, the present invention, the screw is formed in the upper portion and the tapered portion formed in the lower portion of the screw; A unit electrolysis unit installed inside the housing and having a separator made of an ion exchange membrane or a porous neutral membrane, which is in close contact with both sides of the separator, and has a power connection terminal on the top thereof, and a mesh electrode composed of a positive electrode and a negative electrode of titanium material. Cell; Positive and negative wire portions coupled in parallel or in series with a plurality of power connection terminals of the plurality of unit electrolytic cells to supply power to the unit electrolytic cell; A cap coupled to the threaded portion of the housing and sealed, the cap having fixing means for fixing the positive and negative wire portions, respectively; Spacer penetrates the unit electrolytic cell so that both ends thereof are fixed to the unit electrolytic cell over the tapered portion, and a spacer is disposed between the unit electrolytic cells so that the unit electrolytic cells are spaced apart from each other. ; A diffuser having an inlet for introducing raw water into lower portions of the unit electrolytic cells installed in the housing, and distributing and supplying the raw water from the lower portion of each of the unit electrolytic cells; And an outlet part for allowing the sterilized oxidation water reacted by the electrolytic cell to flow out of the housing. Characterized in that is provided.

In addition, the housing, the cap, the inlet and the outlet of the present invention is characterized in that the synthetic resin.

In addition, the unit electrolytic cell of the present invention is characterized in that the plate or cylindrical shape.

In addition, the unit electrolytic cell of the present invention is characterized in that the polygonal tubular shape.

In addition, the present invention is characterized in that it is further provided with a concentration control unit to be connected to the inlet portion or separately installed to be introduced into the electrolytic reactor body to control the concentration and acidity of the raw water by inputting saturated brine.

In addition, a lower portion of the cap of the present invention is provided with a plurality of grooves spaced at a predetermined interval, characterized in that the upper portion of the unit electrolytic cell is inserted into the groove fixed.

Hereinafter, an apparatus for producing sterile oxidized water using an overpotential electrode electrolytic cell according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

1 is a partial cross-sectional perspective view showing an apparatus for producing sterilized oxidized water using an overpotential electrode electrolytic cell according to the present invention, FIG. 2 is a front view and a side view showing a unit electrolytic cell according to the present invention, and FIG. 4 is a schematic cross-sectional view showing an H-type bridge for polarity switching of an overpotential electrode, and FIG.

5 is a partial cross-sectional perspective view showing a sterilized oxidized water manufacturing apparatus using an overpotential electrode electrolytic cell according to an embodiment of the present invention, Figure 6 is a sterilized oxidized water prepared using an overpotential electrode electrolytic cell according to another embodiment of the present invention Partial cross-sectional perspective view of the device, and FIG. 7 is a cross-sectional view showing a state in which the cap of FIG. 5 is fixed to the housing.

As shown in the drawing, the unit 10, the unit electrolytic cell 20 installed inside the housing 10 and provided with the separator 21 and the mesh electrode 22, and the unit electrolytic cell 20. A support part provided with a positive and negative wire portion 30 to supply power, a cap 40 to seal the housing 10, and a spacer 51 to separate the unit electrolytic cell 20 from each other ( 50 and an inlet 61 through which raw water flows into the housing 10, and a diffuser 60 for distributing and supplying raw water to each of the unit electrolytic cells 20. It is composed of an outlet 70 to allow the sterilized oxidized water reacted by the unit electrolytic cells 20 to flow out of the housing 10.

The housing 10 has a threaded portion 11 formed at an upper portion thereof and a tapered portion 12 formed at a lower portion of the screwed portion 11. The cap 40 is coupled and sealed to the threaded portion 11 of the housing 10, and the unit electrolytic cell 20 is spaced apart from the inside of the housing 10. In addition, the housing 10 is a diffuser 60 to distribute the raw water to the unit electrolytic cell 20 is installed in the interior of the housing 10 and the raw water is introduced into the housing 10 from the upper one side to the lower side The other side of the upper portion is provided with an outlet 70 for discharging the sterilized oxidized water electrolyzed by the unit electrolytic cells 20. The material of the housing 10 is preferably made of a synthetic resin material resistant to oxidizing agents such as PP and Teflon.

The unit electrolytic cell 20 is installed from the top to the bottom of the housing 10, the separator 21 is formed of an ion exchange membrane or a porous neutral membrane, and in close contact with both sides of the separator 21, respectively. A power connection terminal 23 is provided and a mesh electrode 22 composed of a positive electrode and a negative electrode made of titanium is provided. 1, 2 and 4 show that the unit electrolytic cell 20 of the present invention is in the form of a plate, FIG. 5 shows that the unit electrolytic cell 20 has a cylindrical shape, and FIG. FIG. 7 shows that the unit electrolytic cell 20 is in the shape of a star.

In particular, the unit electrolytic cell 20 is in the form of a star-shaped cylinder, whereby the contact area with the electrolytic cell is increased compared to the plate or cylindrical shape, thereby increasing the production efficiency of the oxidized water and the concentration of the oxidized water. In addition, it can be produced in a larger size than the cylindrical shape, and can be easily manufactured because it is processed by bending and welding, the deformation is not easy. In addition, since it can be installed so as to be adjacent to the outer wall of the housing at the time of installation, the flow is reduced when the housing and the cap is coupled to be able to install safely.

The separator 21 may be an ion exchange membrane or a porous ceramic membrane having a pore size of about 10 to 50 microns, or may not use a filter cloth or membrane made of chlorine resistant material such as polypropylene or PVC.

The mesh electrode 22 uses an overpotential electrode, and preferably uses a DSA insoluble electrode coated with tantalum and iridium oxide on a titanium material. As described above, sterilized sterilized water using ozone generated in water is generated using the overpotential electrode. At this time, the reaction occurring in each electrode is as follows.

_{Anode: 3H 2 O → O 3 +} 6H + + 6e -

_{2H 2 O → O 2 + 4H} + + 4e -

^{Cathode: 2H + + 2e - → H} 2

Ozone generated at the anode is produced as the main oxidant.

The generated ozone is used to decompose organic matter and sterilize microorganisms, and the organic matter is decomposed by OH radicals to be converted into carbon and water.

The unit electrolytic cells 20 are coupled by the support part 50, and are spaced apart at regular intervals by the spacer 51.

The unit electrolytic cell 20 is made of the same material as the conventional electrode and the negative electrode using a dissimilar material, so that the positive electrode and the negative electrode are not strictly distinguished.

The present invention uses the positive electrode and the negative electrode as the same material to prevent the degradation of the salt by the precipitation of calcium or magnesium oxide in the water as a salt on the negative electrode to decompose the salt by switching the pole for a long time instead of a temporary pole. It will be possible to prevent degradation of the decomposition efficiency. Through this polar change, the present invention does not need to wash the precipitated salts, thereby minimizing the consumption of electrical energy.

In the present invention, in order to generate an oxidant by changing the polarity of the electrode, a direct current flows through the rectifier 110 equipped with the cooler 100 using the H-type bridge 90 using the transistor 91 as shown in FIG. 3. The polarity changes each time you disconnect and reconnect the power.

In addition, the positive electrode and the negative electrode of the mesh electrode 22 are arranged so as to be alternating, respectively, and are connected in series or in parallel by the positive and negative wire portions 30.

The positive and negative wire portions 30 are coupled in parallel or in series with the power connection terminals 23 of the plurality of unit electrolytic cells 20 and serve to supply power to the unit electrolytic cells 20.

The cap 40 is coupled to the threaded portion 11 of the housing 10 to seal the upper portion, and a fixing means 41 for fixing the positive and negative wire portions 30 is provided thereon. In this case, a ring of Viton material may be used between the housing 10 and the cap 40 to prevent leakage. The cap 40 is also preferably made of a synthetic resin material resistant to oxidizing agents such as PP and Teflon as the material of the housing 10. The lower portion of the cap 40, as shown in Figure 4, is provided with a plurality of grooves 42 spaced apart at regular intervals, the upper portion of the unit electrolytic cell 20 is inserted into the groove 42 is fixed desirable. In FIG. 7, the unit electrolytic cell 20 is inserted and fixed into the groove 42 formed in the cap 40. As such, when the unit electrolytic cell 20 is inserted into and fixed to the groove 42 formed in the cap 40, the unit electrolytic cell 20 can be easily fixed and firmly fixed.

The cap 40 is fixed to the positive and negative wire portions 30 by the fixing means 41, so that the unit electrolytic cells 20 coupled to the positive and negative wire portions 30, the housing ( When separated from the 10, it is lifted together with the cap 40 it is possible to easily separate the unit electrolytic cells 20 from the housing 10.

As such, the present invention can easily replace the unit electrolytic cells 20 with the separation of the cap 40 from the housing 10, so that it can be easily replaced, so that the management of the electrolytic cells is easy. Therefore, it is possible to shorten the replacement time and reduce the labor cost of replacement.

When cleaning is required, the cleaning agent may be added to the inside of the housing 10 to be combined with the cap 40 and left for a predetermined time to remove salts attached to the electrode.

The support part 50 penetrates the upper portion of the unit electrolytic cell 20 so that both ends thereof are fixed to the unit electrolytic cell 20 over the tapered portion 12 of the housing 10. In addition, the support unit 50 is provided between the unit electrolytic cells 20, the spacer 51 is provided so that the unit electrolytic cells 20 are spaced from each other, between the unit electrolytic cells 20 It is a non-conductor so that current does not flow.

The diffuser 60 is provided with an inlet 61 to allow the raw water to flow into the lower portion of the unit electrolytic cells 20 installed in the housing 10, each of the unit electrolytic cells 20 It distributes the raw water from the bottom to the top to serve to supply.

The present invention is further provided with a concentration control unit 80 is connected to the inlet 61 or installed separately to be introduced into the housing 10 to input saturated brine to adjust the concentration and acidity of the raw water. It is desirable to be.

When the brine is introduced by the concentration adjusting unit 80, the reaction occurring at each electrode is as follows.

^{_{Cathode: 2H 2 O + 2Na + +}} 2e - → 2NaOH + H 2

^{_{2H 2 O + 2e - → H}} 2 + 2OH -

^{Anode: 2Cl - - 2e - → Cl} 2

^{_{2H 2 O - 4e - → 4H}} + + O 2

Cl ₂ + H ₂ O → HClO + HCl

Here, the potential (ORP) pH oxidation-reduction of 9 or more and at about -700 -900mV the negative electrode, the active ingredients are ^{_{NaOH, O 2 - ·, HO}} 2 ·, HO 2 -, OH -, OH ·, HO 2 ^- a.

In the positive electrode, a strong acid solution with a pH of 2 to 3 and a redox potential of +800 to + 1200mV is produced. Ln this solution as an active ingredient _{^{HClO, ClO -, O 3,}} HO ·, HO 2 · to be.

The apparatus for producing sterilized oxidized water using the overpotential electrode electrolytic cell of the present invention includes various complex oxidants such as hypochlorous acid and peroxide by ozone, hydrogen peroxide, oxygen, OH radical and the like as well as dissolved chlorine ion by electrolysis of water. Can cause

When supplying brine (Brine), in particular, one or more electrolytic cells can be installed, and salt solution is supplied through the supply port through the lower diffuser of the housing equipped with the first electrolytic cell, which is decomposed from the electrolytic cell, and the housing located next. It is characterized by being able to produce a large amount by increasing the amount of oxidant by increasing the generation efficiency of the complex oxidant is installed in parallel or installed in parallel.

The outlet 70 serves to allow the sterilized oxidized water reacted by the unit electrolytic cells 20 to flow out of the housing 10.

8 is a schematic diagram showing an entire system using a sterilized oxidation water production apparatus using the overpotential electrode electrolytic cell of the present invention.

As shown, the solenoid valve 130 is operated by the control of the controller 120 to supply the raw water through the inlet 61 and the concentration is controlled by the metering pump 141 from the salt tank 140 to the brine The sterilized oxidized water produced by supplying the sterilized oxidized water production apparatus 200 using the two overpotential electrode cells connected in series is stored in the oxidized water tank 150 and the mixed oxidant outlet 160 is opened by the metering pump 151. It will be discharged through. At this time, when the sterilized oxidized water is a predetermined amount or more by the level switch 152 provided in the oxidation water tank 150, the solenoid valve 130 is operated to block the supply of raw water or to discharge the generated sterilized oxidized water, and the predetermined amount or less When it is generated under the control of the controller 120 generates sterile oxidized water.

Hereinafter, an example of the embodiment regarding the sterilizing oxidant production performance produced using the apparatus of the present invention will be described. The present invention is described below only by one embodiment, but the present invention is not limited to the following examples.

(Example)

The sterilized oxidized water producing apparatus 200 using the overpotential electrode electrolytic cell of the present invention was connected in series as shown in FIG. 6, and a power supply having a constant current of 30 A in relation to the flow rate of the brine solution was used. The voltage was maintained at a level not greater than 5 V, and 3.4 mol / L of brine was introduced into the electrolytic reactor at a flow rate of 100 L / hr to prepare sterilized water, and the pH of the resulting strongly acidic water was 6.8. There was no change in pH with time measured every 10 minutes from 10 minutes to 1 hour after electrolysis.

In order to determine the deodorizing ability of the strong acidic water prepared above, 20 ml of pig manure was dipped into a 20-l plastic pail, sprayed about 100 ml of strong acidic electrolyzed water, and the concentration of ammonia was measured. No concentration of ammonia was detected at all.

As described above, since the pole of the DC power applied to the electrode can be switched arbitrarily for a long time, it can be used without having to wash by reducing the generation of salt generated from the negative electrode to prevent the efficiency decrease, and thus maintenance and management costs This requires less and has the effect of reducing the consumption of electrical energy. In addition, it is easy to install and replace, so there is no need to stop the operation for a long time, the operation rate can be increased, and by using an inexpensive electrode, there is an advantage that it can be economically used even if the electrode is frequently replaced. In addition, there is an advantage in that a complex oxidant can be prepared, such as preparing an oxidizing agent such as hypochlorous acid in addition to ozone, as well as sterilization by ozone generated by electrolysis of raw water.

Claims (6)

A housing having a threaded portion formed thereon and a tapered portion formed below the screwed portion; A unit electrolysis unit installed inside the housing and having a separator made of an ion exchange membrane or a porous neutral membrane, which is in close contact with both sides of the separator, and has a power connection terminal on the top thereof, and a mesh electrode composed of a positive electrode and a negative electrode of titanium material. Cell; Positive and negative wire portions coupled in parallel or in series with a plurality of power connection terminals of the plurality of unit electrolytic cells to supply power to the unit electrolytic cell; A cap coupled to the threaded portion of the housing and sealed, the cap having fixing means for fixing the positive and negative wire portions, respectively; Spacer penetrates the upper part of the unit electrolytic cell so that both ends are fixed to the unit electrolytic cell over the tapered portion, and a spacer is disposed between the unit electrolytic cells so that the unit electrolytic cells are spaced apart from each other. Support; A diffuser having an inlet for introducing raw water into lower portions of the unit electrolytic cells installed in the housing, and distributing and supplying the raw water from the lower portion of each of the unit electrolytic cells; And An outlet for allowing the sterilized oxidized water reacted by the electrolytic cell to flow out of the housing; Sterilization oxidation water production apparatus using an overpotential electrode electrolytic cell, characterized in that the provided. The method of claim 1, The housing, the cap, the diffuser and the outlet portion is a sterilized oxidation water production apparatus using an overpotential electrode electrolytic cell, characterized in that the synthetic resin material. The method of claim 1, The unit electrolytic cell is a sterilized oxidation water production apparatus using an overpotential electrode electrolytic cell, characterized in that in one form selected from the plate shape, cylindrical shape, polygonal shape. The method of claim 1, The unit electrolytic cell is a sterilized oxidation water production apparatus using an overpotential electrode electrolytic cell, characterized in that the star-shaped cylinder. The method of claim 1, Sterilization using an overpotential electrode electrolytic cell, characterized in that the concentration is connected to the inlet or separately installed to be introduced into the electrolytic reactor body to adjust the concentration and acidity of the raw water by inputting saturated brine Oxidation water production apparatus. The method of claim 1, The lower portion of the cap is provided with a plurality of grooves spaced at a predetermined interval, An apparatus for producing sterile oxidized water using an overpotential electrode electrolytic cell, wherein an upper portion of the unit electrolytic cell is inserted into and fixed to the groove.

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