KR20050034657A - An originating equipment of underwater plasma in a low temperature for creating hydroxyl radica - Google Patents

Abstract

An object of the present invention is to generate a low-voltage low-temperature plasma in water to produce a hydroxyl group having a strong oxidizing and sterilizing power by electrical, chemical and physical action.

The present invention provides a pair of plate-shaped counter electrodes for generating a low-temperature plasma at low voltage (DC 6 ~ 47V) safe in the water: a non-conductor in the form of a network separating the positive electrode and the negative electrode: a porous filter for protecting the electrode from foreign substances in the water : Cartridge or frame inserting and fixing a pair of electrodes, filters, and guard nets, etc .; Bolts and nuts made of a high acid, corrosion and conductive material that can fix the electrode to the cartridge and directly connect the power supply. Acid and corrosion resistant packing to prevent leakage between the bath or container and the cartridge: Acid and corrosion resistant packing to prevent leakage between the bolt and the cartridge (or bath container) used for fixing and grounding the electrode. It is made up of a power supply and electrical, signal control device and so on.

The present invention as described above is simple in structure and easy to manufacture, and there is no fear of disconnection or short-circuit of the electrode, and it can be used for water treatment by generating hydroxyl group by low temperature plasma with very low cost, simple device, and simple installation. It is a very economical and highly effective invention.

Description

An Originating Equipment of Underwater Plasma in a Low Temperature for Creating Hydroxyl Radica}

An object of the present invention is to generate a low-voltage low-temperature plasma by a corona discharge (CORONA) in water to produce a hydroxyl (Hydroxyl Radica) having a strong oxidizing power and bactericidal power by electrical, chemical and physical action.

In more detail, a low-temperature plasma generating electrode used in a water treatment apparatus whose purpose is to generate sterilized water or to purify water and wastewater by generating a hydroxyl group by generating a low-voltage low-temperature plasma, and a cartridge having the same To control devices.

In general, the plasma state refers to a state in which a gas is separated into electrons having a negative charge and positively charged ions at a high temperature, and the charge separation degree is very high and the number of negative charges and positive charges is generally the same.

Each object that makes up a plasma is electrically different from the neutral gas. Electric conductivity is large and current flows only on the surface like metal conductors, and no current flows inside. This plasma is referred to as the fourth material state following the solid, liquid and gas.

In other words, the hydroxyl group is a kind of oxygen anion-based substance which is made in 'plasma' state called solid, liquid, gas, and the fourth substance, which is more than twice as strong as ozone and chlorine in sterilizing, disinfecting and decomposing the existing substances. It is known as a natural substance that is harmless to the human body.

Experimental results in the United States show that the rate of hydroxyl radicals is 2000 times faster than ozone and 180 times faster than solar ultraviolet radiation.

In general, hydroxyl groups are known to be produced when one hydrogen atom (H +) is dropped while water (H ₂ O) molecules are separated by strong electrical energy.

In addition, molecular oxygen (O ₂₎ a O-, O ₂ generated as separated in the same way - the process of oxidation reaction in combination with (Super Oxide Anions) is being suspended contaminants -, O ₃ - O _2, etc. in an oxygen anion of Some are known to be produced. It is known that hydroxyl group (Hydroxyl Radica) is oxidized and reduced to water, usually 2 to 5 hours at room temperature in the air.

Conventional general methods for water treatment are complicated and short-lived expensive filtration systems, ozone, UV, or the like, or chemicals such as chlorine. However, the filtration systems are complicated and expensive, and their lifespan is short, so the filters have to be replaced in a relatively short period, and it is difficult to apply certain standards according to the target water quality, quantity and environment of use.

In general, ozone treatment generates ozone by a high voltage discharge of 5000V or higher, and in case of excessive occurrence, instability that causes fatal damage to the respiratory organs due to the toxicity of ozone exists.

It is also well known that ozone does not dissolve well in water such as oxygen. It is also known that the UV method has a limited effect depending on the wavelength of light and the irradiation distance.

In addition to these problems, the above schemes have significant problems in that the structure is considerably complicated and installation and maintenance costs are high.

Therefore, the latest water treatment method that is attracting attention recently is the method using the generation of hydroxyl (Hydroxyl Radica).

In the related art, there is a method of generating a hydroxyl group by injecting water of high purity (more than 70% purity) and passing water through an ozone generator that applies a high voltage discharge to cause an electrochemical reaction with forced dissolution of ozone.

However, in the above method, since the water must pass through the pipeline of the ozone generator, the size of the device is large and complicated according to the water quality and quantity to be treated.

On the other hand, recently, in order to solve the above problems, there is a bubble generation method by underwater discharge, the ion generator in the liquid for sterilization, and the like.

These methods are also expected to produce hydroxyl radica by low-voltage discharge in water, and can achieve the same effects as sterilization, poison, and neutralization of heavy metals.

However, the above methods have a big problem that the material and manufacturing cost of the device, such as electrode, the manufacturing cost is very high and the difficulty of manufacturing is very low, and the economic and practicality are remarkably low. It is overlooked.

That is, when DC current of at least 1.23V or more is discharged between two electrodes spaced at an interval of 1 mm or less in water, a local discharge heat is generated at the end of the cathode located in the electric field, and the bubbles formed as the contacted water vaporizes. In the process of growing, even a weak electric field causes discharge to induce rapid breakdown of the liquid dielectric, and by the underwater electrochemical reaction, oxygen-based active species (O-, O ₂ , O ₃ , including a large amount of hydroxide ions (OH-)). Bubble Mechanism (HO ₂ , H ₂ O ₂ , OH) is well known.

Based on this, a method of generating hydrogen ions, ozone, and oxygen ions by applying a voltage of several Kv to the needle-shaped discharge electrode and destroying water molecules in water was carried out by a bubble generation study published in IEEE OL EI No.4 in 1978. Since well-known, many similar studies have been made at home and abroad, and look at the electrodes used in the past as follows.

Electrode morphology: Based on the results studied so far, in the conventional method of manufacturing the electrode for electrochemical hydrolysis, various types of discharge electrodes such as acicular, linear, annular, and printed electrode plates have been devised.

However, the needle type has a problem that efficiency decreases in a short time as the needle wears due to surface precipitation of materials by electrical and chemical oxidation over time.

In addition, in the plate-like form, when the spacing between the plates, which are opposite electrodes, is very close, bubbles generated between the plates are hardly emitted to the outside, and the generation efficiency of oxygen-based active species is lowered due to a decrease in the heat radiation effect.

Therefore, linear among the various types of electrodes is known to have the highest discharge efficiency and economical. However, even though the linear electrode is short-circuit even (12 to 500 hours), or because the gap between the poles is very narrow within 1mm, there is a problem in that even if the wire is slightly stretched due to discharge heat or external impact.

In addition, since 0.2 mm diameter wires are usually wound tightly at cell intervals of 0.5 to 1 mm without interruption in the electrode frame of a predetermined standard for discharge efficiency, there is also a problem of difficulty in manufacturing and too low productivity.

Complementary to this, a printed electrode plate type in which a stripe-type electrode material is printed on an insulating substrate by printing, plating, vacuum deposition, screen printing, etc. has been proposed, but the generation efficiency of oxygen-based active species is low, and bubble generation is difficult. There are problems such as higher costs.

Material of electrode: In the material of the electrode, great consideration should be given to acid resistance, corrosion resistance, electrical conductivity, processability, price, and the like. Conventionally, ferrite (FERRITE) is used for the positive electrode, platinum group precious metals such as platinum (Pt), rhodium, and iridium, gold (Au), stainless steel 304 (SUS), and the like are mainly used.

Considering oxidation resistance, electrical conductivity, processability, and price, stainless steel 304 (SUS) has been evaluated as the most suitable, but in general, stainless steel 304 contains a large amount of harmful heavy metals such as chromium, nickel, and iron as alloying elements. During use, precipitation and dissolution of these heavy metals may occur, which may be harmful to the human body and may cause secondary pollution. In addition, red oxidative floats may be generated by strong oxidation by hydroxyl groups and oxygen-based active species. there was.

In addition, ferrite can be effectively used at a relatively low current, but precipitation of underwater (FRADAY) occurs at a high current, resulting in short electrode life and poor stability.

In addition, the conventional negative electrode materials also have the problem of shortening the lifespan by depositing and separating a considerable amount in water within a fairly short time (12 to 500 hours) on the same principle.

Platinum is the most efficient of the materials is expensive because of the characteristics of the material is a precious metal that depends on the total amount of imports, there is a problem that the manufacturing cost is very high and poor workability.

Platinum group metals, such as rhodium and iridium, are cheaper than platinum, but are not suitable as discharge electrode materials because metal ions are separated and precipitated during discharge, resulting in a shorter lifespan. Gold has good electrical conductivity and processability, but when contacted with oxygen-based active species such as ozone generated in water, there is a problem in that harmful chemical change occurs due to oxidation of gold oxide.

Therefore, the conventional electrodes are wound around the frame 32 of the rectangular shape 32 at intervals of less than 1 mm, respectively, with a pure platinum material wire (wire) 31 having a thickness of 0.1 to 0.15 mm, as shown in FIGS. 8 and 9. As a method of opposing each other to cross each other, it was very disadvantageous in terms of productivity and cost in manufacturing the electrode.

In addition, there may be a problem that a sagging line and a disconnection phenomenon may easily appear, and a case may be easily shorted when the frame is deformed.

Electrical problem: In addition, conventionally, only the DC voltage is applied, so that the impurities are attached to the counter electrode as the use time elapses, thereby reducing the current as well as greatly reducing the efficiency.

The current flows from the cathode to the anode and discharges underwater, and oxygen-based active species cluster ions are bubbled at the anode. At this time, ionized impurities (organic matter) and electrolytically separated anions (inorganic matter) are attached to the positive electrode, so that the efficiency of the electrode decreases when used for a long time.

Therefore, if only DC voltage is applied as it is, the cathode electrode can be used semi-permanently, but the anode electrode has a short service life. Therefore, there is a problem that the anode electrode should be made larger or replaced frequently.

The present invention has been invented to solve the above problems, by generating a low-temperature plasma with strong electrical energy by low voltage discharge in water to separate the water (H ₂ O) molecules, a large amount of hydroxide ions generated in this process Hydroxyl Radica is produced by chemical reaction of oxygen-based active species (O-, O ₂ , O ₃ , HO ₂ , H ₂ O ₂ , OH) including (OH-) to sterilize bacteria, bacteria and viruses in water, It is a device that removes nitrogen compounds and sulfates or neutralizes heavy metals and poisons.

That is, the present invention relates to a method and apparatus for treating various harmful oils and inorganic substances such as bacteria, bacteria, poisons, heavy metals, etc. in water by electrochemical methods.

More specifically, by simply installing the electrode and the device designed in accordance with the present invention in a water tank or a container used for general living water, drinking water, and even various waste water, to generate a low-temperature plasma with a safe and powerful electrical energy in the water, The present invention relates to a method and apparatus which can be used very economically and environmentally in neutralizing and removing various bacteria, bacteria, poisons, heavy metals, etc. present in water by generating a large amount of Hydroxyl Radica through an electrochemical reaction. When described in detail by the accompanying drawings as follows.

The present invention provides a pair of counter electrodes for generating a low temperature plasma at low voltage (DC 3 ~ 47V) safe in water:

A network insulator that separates the positive and negative electrodes:

Porous filter (activated carbon impregnation) to protect the electrode from foreign objects in water:

Cartridges or frames that insert and hold a pair of electrodes, filters, screens, etc .:

Grounding bolts and nuts made of highly acid, corrosion and conductive materials that hold the electrodes in the cartridge and directly connect power:

Acid and corrosion resistant packing to prevent leakage between the water tank and the cartridge:

Acid and corrosion resistant packings to prevent leakage between bolts and cartridges (or bath vessels) used for electrode holding and grounding:

It is composed of a power supply for supplying power to the electrode and the electric, signal control device and the like.

That is, an insertion groove 3 formed in a multistage manner is formed in the inner central portion of the main body 1 having the spiral portion 2 formed thereon, and the electrodes 4 and 5 are placed in the insertion groove 3, and the electrode is disposed between the electrodes. Insert the blocking plate (6) into each of the electrodes, each of the electrodes (4) (5) fastening the ground bolt (7) together with the packing to protrude to the lower end of the body (1), the electrodes (4) (5) In the upper part of the fixing fixture 25 and the filter (porous activated carbon filter or carbon nonwoven fabric + filter net) (8), the upper part of the filter (8) is provided with a lid (9) formed with several through holes at regular intervals on the upper surface. It is fixed to the main body (1) by screwing, and to the ground bolt (7) protruding to the bottom of the main body (1) to fasten the leak-proof packing (11) and then to fasten the ground nut (10).

The electrode (4) (5) is a pure titanium wire (diameter 0.1 ~ 0.5mm) in a conventional stainless steel mesh weaving machine cell pores of 0.15 (100 mesh) ~ 1.2mm (16 mesh), the space ratio of about 50% After weaving it into the form of square weave square mesh, make it into mesh type, cut it to the required size, and then drill it with a diameter of 2 ~ 10mm at regular intervals so that the grounding bolt can be inserted into the cut electrode material. 99.9% or more) to 1-5 (micron micrometer) thickness by plating by barrel ionization.

First embodiment of the present invention

The through hole 13 is formed in the inner center of the water tank 12, and the fixed body 14 is placed on the upper part of the through hole 13, and then separated by a blocking plate 15 inside the fixed body 14. Insert the electrode 16, the electrode fixing fixture 17 is inserted into the upper part of the fixing body 14, then the upper body 18 is placed on the upper part and fixed to the fixing body 14 with the fixing bolt 19 However, the filter body 20 is inserted into the upper body 18, and then fixed fixing plates 21 having a plurality of through holes formed at regular intervals are installed, and the ground bolt 22 protruding to the bottom surface of the water tank 12 prevents leakage. After fastening the packing 23 is to fasten the ground nut (24).

Referring to the operation of the present invention as described above is as follows.

The main body 1, to which the electrodes 4 and 5 are fixed, is fastened to the bottom of the container (water bath) and then fastened to the fastening hole, and a packing is secured between the main body 1 and the container to prevent leakage. In this state, put water into a water tank or a container, and connect the power cable to the grounding bolt (7) protruding to the bottom of the main body (1) or the outer surface of the water tank (or container), and secure it with a grounding nut. Connect to the control unit and then apply power.

That is, the voltage of the electrode used in the present invention is within 3 ~ 47V of DC, which is a safe standard for human body, and the intensity of the current is controlled at 3V / 150mA or more according to the size of the electrode, so that a high voltage generator (more than 5000V) like an existing ozone generator is provided. There is no fear of electric shock in any case.

In the present invention, since the polarity of the electrode is changed at regular time intervals by applying a square wave pulse voltage of the alternating current in addition to the DC voltage, the impurities do not adhere to the electrode, and the frequency of the alternating pulse voltage is increased to apply only the DC voltage. The amount of ion generation of hydroxide ions and oxygen-based active species can be increased.

That is, when only the conventional DC power is applied, the low-temperature plasma discharge region is narrow by several mm on the discharge line, and there is a problem that the discharge is not stabilized to increase the discharge region by increasing the applied voltage. When the pulsed square wave alternating voltage is used, the low temperature plasma discharge region can be increased to several tens of mm on the discharge line.

The actual configuration of the electrical control devices required for the operation of these devices is as follows.

The first is the case of PCB control.

Power supply → Switching part / Power LED (LCD) → Pulse generator → Connection part → Power switch → Control part → Power supply / Switching part → Signal output part / Operation LED (LCD)

The power supply unit converts AC power (AC or battery) applied from the outside (outlet) into DC power DC and outputs the same. It converts 110 ~ 220V power supply into DC 3 ~ 47V power supply and outputs the alternating voltage through pulse circuit.

The connection part is the part where the electrode connection terminals (contact bolts, nuts and power lines) of the low temperature plasma generator are connected.

The switching unit turns on / off the power supply of the power supply unit according to the control signal of the controller. Switching elements such as PNP transistors, NPN transistors, and FETs (field effect transistors) can be used.

When the power switch is turned on, the control unit applies an ON control signal to the switching unit so that DC power is supplied from the power supply unit to the low-temperature plasma generator through the connection unit, and when the set operating time elapses, the control unit stops the power supply by applying the OFF signal to the switching unit. Let's do it. In addition, the controller controls the switching unit so that the positive voltage and the negative voltage are alternately supplied at intervals of 1 second to 5 minutes or more so that the polarity of the connection terminal is changed every time the power is alternately supplied. It also controls the signal output and operation LEDs.

The present invention can also be configured with an analog control scheme.

Power supply → Switching part → Connection part → Control part (timer) → Switching part

Looking at the characteristics of the present invention as described above are as follows.

Material and Properties of Electrode

The underwater discharge electrode for the low temperature plasma generation, the efficiency of the low temperature plasma generation and the lifetime of the electrode varies according to the corrosion resistance, acid resistance, heat resistance, mechanical tensile strength and the like.

Efficient underwater discharge electrode material should not only have high electrical conductivity but also be inert metal with oxygen overvoltage, and it is harmless to human body and does not cause secondary pollution even if metal used in electrode is deposited or dissolved after long time use. Should not.

The material of the electrode invented by the present invention is completely harmless to the human body, and non-alloyed pure titanium (ASTM-B265 greed2 / 7/11, ASME-SE greed4) having excellent corrosion resistance, acid resistance, heat resistance, and mechanical tensile strength is incorporated into the mesh specification. Therefore, it is drawn within the wire diameter of 0.1 ~ 0.5mm and woven into the form of plain weave and mesh with 16mesh (0.15mm) ~ 100mesh (1.2mm). On the surface of the electrode material, platinum having a purity of 99.9% or more having the highest electrical conductivity, corrosion resistance, acid resistance, and heat resistance is ion plated to a thickness of 1 to 5 μm.

Pure titanium has excellent acid resistance and corrosion resistance like platinum, and it is a metal that is completely harmless to human body. If it is used for a long time, even if plating or metal surface is precipitated and dissolved in water, there is no fear of secondary environmental pollution.

Titanium is much cheaper than platinum wires, and its electrical conductivity is similar to that of stainless steel 304, which is a common material for electrodes. Corrosion resistance and oxidation resistance are much higher.

In addition, the present invention can be used for permanent regeneration because the plating of the platinum on the existing titanium mesh when the efficiency is lowered due to precipitation of platinum plating after a long time use.

On the other hand, stainless steel 304, which is widely used as an electrode material, has a lower corrosion resistance or oxidation resistance than titanium, and is alloyed with about 18% of chromium (Cr) and about 8% of nickel (Ni), which is unsuitable for human body and environment after long time use. The material may precipitate and dissolve.

Form, material and characteristics of electrode contact

In the contact portion for applying a current to the electrode of the present invention, the contact connecting the two electrodes and the power supply is a bolt made of pure titanium of the same material as the electrode, platinum plating in the same manner as the electrode, after a long time use Even if the contact surface is deposited or dissolved, it guarantees human safety and environmental pollution prevention.

In general, if the thread is penetrated by three or more turns (three spirals) to the fixing object, leakage can be largely prevented even at a large water pressure. Therefore, the bolt according to the present invention can be connected to the power line with a brass, stainless steel nut integrally penetrating and fixed together with the electrode in the tank or the container to install the electrode with a thread interval (pitch) of 0.4mm.

Alternatively, the electrode may be fixed to a cartridge for fixing the electrode, and then the cartridge including the electrode may be connected to a target tank or a container.

Since the contact part of the electrode also directly flows the current in the water, when soldering or welding joint materials such as copper and lead, which are heavy metals, the harmful components may be dissolved in the water or secondary pollution may occur. In order to solve the contact was made of bolts of the same material as the electrode.

In addition, unlike the conventional method by using a contact point with a bolt or nut, the installation of the electrode is simple, and even when the electrode is replaced, the existing electrode can be easily separated and assembled without any damage, thereby completely regenerating the existing electrode.

The diameter and length of the electrode contact bolt may vary depending on the target installation.

In addition, in the case of the conventional platinum wire electrode and the electrode plated with a platinum group metal on the titanium plate, it is common to install in a water tank or a container due to the winding structure of the wire, the grounding problem, or the diffusion of bubbles in the water. In order to install a completed electrode cell in a container underwater, it has a very complicated structure.

However, the present invention has no problem in grounding even when the electrode is laid down, and the electrode cartridge protruding in the container becomes thin within 10 mm at the time of installation, so that the installation is easy and the air bubble spreading effect is much more excellent. You can produce more Hydroxyl Radica in time.

Form, material and characteristics of electrode separation network

Between the positive electrode and the negative electrode, non-conductors made of silicon, PP, and Teflon materials are inserted into a net in the form of a strong acid and corrosion resistance and harmless to the human body. The cell size of the electrode separation network is 3 ~ 15mm, and the thickness of the separation network should be 0.1 ~ 2mm according to the intensity of electric charge applied to the electrode and the size of the electrode.

The role of the separation network is very important to optimize the separation distance between the two electrodes and to prevent shorting of the two electrodes.

The current flows from the cathode to the anode, causing underwater discharge. At this time, ionized impurities (organic matter) and electrolytically separated anions (inorganic matter) are attached to the positive electrode and the negative electrode to form a core production site, and a local electric field enhancement region is formed between the two electrodes to generate oxygen-based active species cluster ions in a bubble state. do.

The generated bubbles expand and form an electric field from the negative electrode toward the positive electrode. Therefore, the distance between both electrodes must be minimized between 0.1 and 2 mm to minimize ion loss and maximize ion cluster bubble generation efficiency.

In addition, the ground bolt packing and the cartridge packing used to prevent leakage during installation are made of silicone material having strong corrosion resistance, acid resistance and safety to the human body, and the material of the cartridge or frame including the electrode is also corrosion resistant, acid resistant and safe for human body. Use teflon.

When fixing the cartridge or frame that accommodates the electrode to a water tank, a container, or a pipe, the screws are made of titanium, SUS304, or the like.

Meanwhile, an embodiment of the present invention will be described with reference to FIGS. 4 and 5.

The fixed body 14 is placed in the through hole 13 formed in the inner center of the water tank 12, and then the pair of the electrodes 16 separated by the blocking plate 15 is placed in the fixed body 14, and the ground bolt (22) after the packing 23 is installed, the ground bolt is installed so as to protrude to the bottom of the tank, and in this state by fastening the packing and ground nut 24 in the bottom of the tank to be fixed.

In the above state, the filter 20 and the cover-type fixing plate 21 are fastened by screwing the fixing body 21 to the fixing body on the upper portion of the electrode 16, and the collecting bolt 22 protruding to the bottom surface of the water tank 12 is powered. Connect to the control unit and then apply power.

Chemical formula formulated in water according to the present invention

H ₂ O + E (electrical energy) → H, O

O + O → O ₂

H → H +

O ₂ → O _2-

H +, O _2- + H ₂ O ₂ (hydrogen peroxide: evaporation) + OH- (dissolved in liquid)

On the other hand, the electrode according to the present invention has no fear of disconnection or short circuit, and can be used for water treatment by generating Hydroxyl Radica by low-temperature plasma with very low cost, simple apparatus, and simple installation. In addition, it is a very economical and efficient invention because the electrode can be used permanently.

In addition, the electrode of the present invention has an electrode of the same size as the conventional linear electrode, and thus increases the counter area more than twice, thereby increasing the efficiency of the electrode and the low temperature plasma generation efficiency.

In addition, it is possible to mass weaving in a short time in a weaving machine (general stainless steel weaving machine) without winding the wire directly, mass production and cost reduction of the electrode is possible, it is a much more useful invention in economical, productivity practical screen.

Conventional linear electrodes and electrodes plated with a platinum group metal on a titanium plate are generally installed in a water tank or a container due to a winding structure of a wire, a grounding problem, or a problem of underwater diffusion of generated bubbles. Even if the electrode is laid down, there is no problem in grounding, and the electrode cartridge protruding in the container has a thickness of less than 10mm at the time of installation, so it is easy to install and the bubble spreading effect is much more excellent. It can produce an amount of Hydroxyl Radica.

The materials of the electrodes 4, 5, 16 and all the constituent materials used in the present invention are safe for the human body, and there is no secondary environmental pollution.

Hydroxyl Radica, a representative ionization material produced in the present invention, has the second highest oxidizing power after fluorine among the materials present in the world, so it is very excellent in oxidizing and decomposing oil and inorganic substances (oxidation power is fluorine, hydroxyl group, ozone in order). High fluoride, however, has a lethal effect on the human body, especially the skeletal system, if it exceeds a certain amount, while ozone also has a lethal effect on the respiratory system, while OH is harmless to the human body.)

Oxygen-based active ions, including Hydroxyl Radica produced by the present invention, can sterilize various bacteria, viruses, molds, moss, etc. existing in water or in the air, and remove floating dust. In addition, it is possible to treat plant wastewater, high-purity water treatment, and toxic exhaust gas (nitrogen oxide, sulfur dioxide, etc.) of vehicles. In particular, in the water reaction, various organic substances and heavy metals dissolved in water may be oxidized and neutralized, sterilization of various bacteria, water rot, odor, and dissolved oxygen may be useful for purifying water.

In addition, when the water treated by the present invention is sprayed and absorbed in plants, it has a non-toxic bactericidal effect, and when used in hydroponic cultivation, maintaining a constant water temperature, increasing oxygen dissolved amount (approximately 70% higher than that in water), ionized oxygen It is effective in promoting germination and growth by increasing root absorption of oxidized oils and inorganic substances, stimulating electric cells, removing harmful bacteria, algae, and especially after sterilization, so it is reduced to water. It is also a big advantage.

The present invention as described above will be described in more detail as follows.

1) Low temperature plasma generation and decomposition of water molecules: The present invention is installed in a water tank or a container containing waste water, including general water, and the current is applied in water. As low-temperature plasma is generated between the negative electrodes, water molecules (H ₂ O) are decomposed into hydrogen (H) and oxygen (O) ions and diffused into numerous fine bubbles in the form of ion clusters. At this time, the oxygen atom combines with other oxygen atoms and has a property of stabilizing, thereby forming oxygen molecules (O ₂ ) through the bond.

2) Ion Formation: Hydrogen atom (H) is separated from anion electrons by H. electrochemical energy by low temperature plasma and becomes H +. Oxygen molecule (O ₂ ) accepts the surrounding anion electrons and oxygen O and partly O Changes to ₃ In addition, the electrochemical dissociation state is generally reduced within 2 to 5 hours in the air, and within about 48 hours in a sealed state such as a refrigerator, and the water has a weak alkalinity of about 7.4 Ph.

3) Formation of Hydroxyl Radica: The generated hydrogen cation (H +) and oxygen anion (O _2- ) react with surrounding water molecules (H ₂ O) to form various clusters of oxygen-based active species such as Hydroxyl Radica and anion To create.

The hydrogen peroxide produced together evaporates over the surface of the water, and Hydroxyl Radica attaches to the bacteria and acts to break down and remove it.

4) Sterilization, Disinfection and Reduction of Hydroxyl Radica: Hydroxyl Radica, which is very unstable due to its molecular nature, takes hydrogen ions (H) from the cell membranes of bacteria and reduces them back to water (H ₂ O). Bacteria removed from hydrogen (H) are made into harmless substances that are inactivated as the cell membrane is destroyed, and they can process algae such as mold and moss by reaction of ozone (O ₃ ), one of the oxygen-based active species. .

In addition, the micro bubbles in the water generated by the strong electric field between the cathode and the anode has the effect of electrically removing the microorganisms and other oil and inorganic substances in the water by forming a strong electric field between the bubbles.

Oxygen-based active species ions, such as hydroxyl radicals generated in water by low-temperature plasma, are very unstable, so they react with bacteria, toxins, and organic inorganic substances in water, and are then reduced back to water within 2 to 5 hours under normal atmospheric conditions. There is no concern at all.

According to the present invention, after plating for a long time, even if the plating or metal surface is precipitated and dissolved in water, the pure titanium conductor (Pt: 99.9% or more) is plated on pure titanium conductor which is completely harmless to the human body and does not cause secondary environmental pollution. It is designed to induce the generation of radicals more safely and effectively induce decomposition or excitation of organic matter.

Specific test results (request result test report of the Chemical Testing Institute) of the effect of the present invention is shown in E. coli / Staphylococcus aureus / Pseudomonas aeruginosa / Candina / Cholera / Heterogeneous bacteria / Mutans (causal cavity) / large Most bacteria and viruses, including Onella, were found to be sterilized at least 99.9% within 5 minutes of operation (time commissioned by the inventors). According to the researchers, the same effect occurs within one minute of the actual contact time.

In addition, poisons such as phenol, diazinon, parathion and arsenic were removed more than 50 ~ 70% within 5 minutes of contact, and more than 99.9% could be removed by increasing the contact time or increasing the current strength.

Other similar studies show that algae, such as mold, can be removed, and heavy metals can be neutralized depending on the contact time and current strength.

As described above, the present invention generates a hydroxyl group by chemical reaction of oxygen-based active species including a large amount of hydroxide ions generated in this process by separating the water molecules by generating a low temperature plasma having strong electrical energy by low voltage discharge in water. It is a device that sterilizes bacteria, bacteria, viruses, etc. and neutralizes heavy metals and poisons. Its simple structure makes it easy to manufacture, and there is no fear of disconnection or short-circuit. This is a very economical and highly effective invention that can be used for water treatment by generating hydroxyl groups by low temperature plasma with simple apparatus and simple installation.

As described above, the present invention has been described in detail only with respect to the described embodiments, but it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims. will be.

Figure 1 is an overall schematic separation perspective view showing the electrode generator of the present invention

Figure 2 is a side cross-sectional view showing a state of use of the present invention

3 is a schematic circuit diagram showing a control unit of the present invention;

4 is a schematic exploded perspective view showing a first embodiment of the present invention;

Figure 5 is a side view of the use state showing the installation state of the embodiment of the present invention

6 is a test report of the Korea Testing Institute for the present invention

7 is a test report of the Korea Testing Institute for the present invention

8 is a perspective view showing a conventional plasma generating apparatus

9 is a schematic side cross-sectional view showing a conventional plasma generator;

             ** Description of symbols for the main parts of the drawing **

1. Main Unit 2. Spiral Section 3. Insertion Groove

4. 5. 16. Electrode 6. 15. Blocker 7. 22. Grounding bolt

8. 20. Filter 9. Lid 10. 24. Grounding Nut

11.23.Packing 12.Water Tank 13.Through Hole

14. Fixing body 17. Fixture 18. Upper body

19. Fixing bolt 21. Fixing plate

Claims (10)

The present invention provides a pair of plate-type counter electrode for generating a low-temperature plasma at a safe low voltage (DC 3 ~ 47V) in water and: A network insulator that separates the positive and negative electrodes: Porous filters to protect the electrodes from foreign objects in the water: A cartridge or frame that inserts and secures a pair of electrodes, filters, and guards, etc .: Grounding bolts and nuts made of highly acid, corrosion and conductive materials that hold the electrodes in the cartridge and directly connect the power source: Acid and corrosion resistant packings to prevent leakage between the bath or container and cartridges: Acid and corrosion resistant packings to prevent leakage between bolts and cartridges (or bath vessels) used for electrode holding and grounding: An underwater low temperature plasma generator for generating a hydroxyl group comprising a power supply for supplying power to an electrode, an electric signal control device, and the like. 2. An insertion groove (3) formed in multiple stages is formed in an inner central portion of the main body (1) having a spiral portion (2) formed thereon, and the electrodes (4) and (5) are placed in the insertion groove (3). The blocking plate 6 is inserted between the electrode and the electrode, and each of the electrodes 4 and 5 has a grounding bolt 7 fastened together with a packing to protrude to the lower end of the main body 1 and the electrode ( 4) The filter (porous activated carbon filter or carbon nonwoven fabric + filter net) 8 is placed on the upper part of the filter 5, and the lid 9 having several through holes formed at regular intervals on the upper surface of the filter 8 is provided. It is fixedly installed on the main body (1) by fastening the leakage preventing packing (11) to the ground bolt (7) protruding to the bottom of the main body (1) and then fastening the ground nut (10) An underwater low temperature plasma generator for generating a hydroxyl group. The method of claim 1, wherein the electrode is a pure titanium wire (diameter 0.1 ~ 0.5mm) in a conventional stainless steel mesh weaving machine cell pores of 0.15 (100mesh) ~ 1.2mm (16mesh), the space ratio of about 30% -60% Weave in the form of a plain weave square net to make a mesh form: By cutting the manufactured mesh to the required size and then perforating to a diameter of 2 to 10mm at regular intervals so that the grounding bolt can be inserted into the cut electrode material: An underwater low temperature plasma generator for generating hydroxyl groups, characterized in that the surface of the perforated mesh is plated with pure platinum (99.9% or more) to a thickness of 1 to 5 (microns). The method of claim 1, wherein the through hole 13 is formed in the inner center of the water tank 12, the fixing body 14 is placed on the upper part of the through hole 13, and then the blocking plate inside the fixing body 14. Insert the electrode 16 separated by (15), insert the electrode fixing fixture 17 in the upper portion of the fixing body 14, then place the upper body 18 on the upper portion of the fixing body with a fixing bolt (19) It is fixed to (14), but inside the upper body 18, the filter 20 is put into the fixed plate 21 is formed by fixing a plurality of through holes at regular intervals, the ground bolt protruding to the bottom surface of the water tank 12 (22) is a water-resistant low-temperature plasma generating device for hydroxyl production, characterized in that the fastening the leakage preventing packing (23) and then fixed by fastening the ground nut (24). 4. The underwater low temperature plasma generator for generating hydroxyl groups according to claim 3, wherein the surface of the titanium wire is plated with pure platinum (99.9% or more) in a thickness of 1 to 5 (microns). 2. The underwater low temperature plasma generator according to claim 1, wherein at least one pair of electrodes is provided correspondingly at intervals in the range of 0.1-2.0 mm to generate low temperature plasma by corona discharge. 2. The underwater low temperature plasma generator according to claim 1, wherein a power supply is applied by fastening a grounding bolt and a nut to the electrode. The underwater low temperature plasma generator for generating hydroxyl groups according to claim 1, wherein a separation network such as silicon or teflon is provided between the electrode and the electrode. 2. The underwater low temperature plasma for hydroxyl production according to claim 1, wherein a general alternating current (AC) of 100-220 V is converted into a direct current (DC) to the electrode to apply a 3-47 V voltage and a current of 150 mA or more. Generator. The underwater low temperature plasma generator for generating hydroxyl groups according to claim 1, wherein a filter containing a carbon nonwoven fabric or activated carbon is provided on an upper surface of the electrode.