JP5295485B2 - Liquid plasma type treatment liquid purification method and liquid plasma type treatment liquid purification apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an in-liquid plasma generation method and an apparatus for generating plasma in a bubble formed in a liquid and permeating and diffusing active ion species into the liquid. <P>SOLUTION: In the in-liquid plasma generation method and the in-liquid plasma generation apparatus 2, a pair of electrodes at least one of which consists of a high voltage electrode 6 having a high voltage insulating part 6b and at least one projection part is immersed in liquid 14, a high voltage pulse is applied at a high repetition rate between these electrodes to Joule-heat the liquid adjacent to the high voltage electrode 6 and continuously or intermittently to boil and evaporate the liquid, the evaporation bubbles form an evaporation bubble region 28 surrounding at least a projection part tip 6c of the high voltage electrode 6, evaporation objects in the bubbles is ionized (turned to plasma) by high voltage dielectric breakdown discharge in the evaporation bubbles by the high voltage pulse 26 to form various kinds of ions, and the ion species in the plasma is permeated and diffused into the liquid 14. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to an in-liquid plasma generating method and an in-liquid plasma generating apparatus for generating plasma in bubbles in which bubbles are formed in liquid, and more specifically, an excessive penetration of active ionic species into the liquid by the plasma. In-liquid plasma generation method, in-liquid plasma generation apparatus, in-process liquid purification apparatus, and ionic liquid supply by diffusing and decomposing, disinfecting, and decolorizing substances to be decomposed (harmful substances, bacteria, microorganisms, dyes, etc.) Relates to the device.

  In the conventional treatment liquid purification equipment, the activated sludge treatment method using microorganisms and the wastewater treatment method using underwater discharge are used for sewerage treatment facilities, human waste treatment facilities, factory wastewater treatment facilities, livestock wastewater treatment facilities, lake water purification facilities, etc. It has been. As a method of deodorizing, decoloring, sterilizing and treating pollutants with high efficiency, there are substances and microorganisms that cannot be removed by biological treatment using the above activated sludge treatment method. There is a demand for improved performance. As a treatment liquid purification method using underwater discharge, Japanese Patent Application Laid-Open No. 61-13484 (Patent Document 1) discloses a treatment liquid purification that kills Escherichia coli by applying a high voltage to domestic wastewater such as sewage and human waste. The method is shown.

  FIG. 16 is a schematic configuration diagram of a conventional liquid treatment apparatus using a high voltage, which is used in the liquid treatment purification method described in Patent Document 1 described above. AC100V of the single-phase AC 120 is connected to the step-up transformer 122 via the electromagnetic switch 103, and the boosted secondary high-voltage terminal 113 is connected to the electrode 106. The potential difference 126 at the time of boosting is set to be 6000 V at the maximum. A convex plate 107 is provided by bonding a plate-like body 108 to the inner surface of the trough 104 having insulation and rigidity. The ground side terminal 110 is grounded and connected to the plate-like body 108. The supplied liquid 114 to be processed fills the inner space of the plate-like body 108, and the electrode 106 and the plate-like body 108 are arranged so that the liquid 114 to be processed is in contact therewith. When the electromagnetic switch 103 is closed while supplying the liquid to be processed 114 and a potential difference 126 is generated, a potential difference is generated between the electrode 106 and the plate-like body 108 and the convex plate 107 at the same time. The existing coliforms can be sterilized.

Further, in an ionic liquid supply apparatus equipped with a conventional DC power supply, when generating alkaline ionized water or acidic ionized water mixed with drinking water, disinfectant, etc., water is ionized by an electrode pair to which a DC voltage is applied. To separate. Therefore, as described in JP-A-6-226259 (Patent Document 2), it has been necessary to dissolve calcium lactate, sodium chloride and the like in water to impart high conductivity. In addition, there is a need to generate positive and negative ions while applying a DC voltage, and to maintain ion separation by disposing an ion-permeable diaphragm in the separation container.
JP-A-61-136484 JP-A-6-226259

  In the conventional underwater discharge type treatment liquid purification apparatus as shown in FIG. 16, the current for sterilizing the coliform bacteria is used between the planar electrodes to conduct the current into the treated water 114. 106, the plate-like body 108, and the convex plate 107), a very high potential difference needs to be generated by the electromagnetic switch 103. Therefore, the power consumption is increased and the energy efficiency is significantly reduced. Furthermore, even if some bacteria such as Escherichia coli can be sterilized by the conduction of current, it is very difficult to decompose and sterilize various pollutants and various germs.

  Furthermore, it is difficult to efficiently decompose and decolorize sewage pigments and dyes dissolved in the liquid to be treated not only in waterworks and sewers but also in sewage treatment, livestock wastewater treatment, factory wastewater treatment, and the like. In addition, as a method for solving such problems, it is conceivable to use an ozone treatment method having a decoloring, deodorizing, and bactericidal action, etc., but there is a need to remove residual ozone by secondary treatment. This was a method for increasing the liquid purification cost.

  Further, as described above, in the conventional ionic liquid supply device as described in Patent Document 2, calcium lactic acid, sodium chloride or the like is dissolved in water to give high conductivity, and an ion-permeable diaphragm is provided in the separation container. Therefore, it is necessary to maintain the separation of ions, and the production cost and simplicity of alkaline ionized water and acidic ionized water are significantly reduced.

  The object of the present invention is to form bubbles in the liquid, generate plasma in the bubbles, and cause the active ionic species to permeate and diffuse excessively in the liquid by the plasma. It is to provide an in-liquid plasma generation method, an in-liquid plasma generation apparatus, a to-be-processed liquid purification apparatus, and an ionic liquid supply apparatus that decompose, disinfect, and decolorize substances, bacteria, microorganisms, and dyes).

  The present invention has been proposed in order to solve the above-described problems. The first aspect of the present invention is a high-voltage electrode in which at least one is formed with a high-voltage insulating portion and one or more protruding portions. The electrode pair is immersed in a liquid, and a high-repetitive high-voltage pulse is applied between the electrode pair to joule-heat the liquid in the vicinity of the high-voltage electrode and continuously or intermittently boil and evaporate. A vaporized bubble region that at least surrounds the tip of the protruding portion of the high-voltage electrode is formed, and the vaporized material in the bubble is ionized (plasmaized) by high-voltage breakdown discharge in the vaporized bubble by the high-voltage pulse, and various types This is a submerged plasma generation method in which ions are formed and ion species in the plasma are permeated and diffused into the liquid.

  According to a second aspect of the present invention, in the first aspect, the high-voltage electrode is a needle-like electrode having a high-voltage insulating portion, and forms a vaporized bubble region that at least surrounds the tip of the needle-like electrode. This is a method for generating plasma in liquid.

  According to a third aspect of the present invention, in the first or second aspect, the in-liquid plasma generation method in which the ionic species in the plasma is excessively permeated and diffused in the liquid to make the liquid an active ionic species liquid. It is.

  According to a fourth aspect of the present invention, in the first to third aspects, one or more gases serving as an ion species source are supplied from the gas supply port provided in the peripheral portion of the high voltage electrode or the high voltage electrode. And the mixture is mixed in the vaporized bubble and ionized at the same time as the vaporized product, and the ionic species formed by ionizing the ionic species and the supply gas are excessively permeated and diffused in the liquid to make the liquid active ions. This is a submerged plasma generation method in which an additional ion species is supplementally mixed into the plasma as a seed solution.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the liquid is a liquid in which a substance to be decomposed is in a mixed state, and the target is separated by the active ion species accumulated in the liquid. This is a method for generating plasma in liquid to decompose decomposition products.

  According to a sixth aspect of the present invention, in any one of the first to fourth aspects, the liquid is a liquid in a mixed state of two or more types, and the mixing is performed by the active ion species accumulated in the liquid. This is a method for generating plasma in liquid that promotes a chemical reaction between liquids in a state.

In a seventh aspect of the present invention, in any one of the first to fourth aspects, the liquid is potable water or raw water thereof, and the ion species in the plasma are H ⁺ and OH ⁻ or these ion species. And additional ionic species by ionization of auxiliary gas supplied, and decompose and / or sterilize the decomposed substances (fungi, microorganisms, etc.) contained in the water by excessively permeating and diffusing these ionic species. In this way, the in-liquid plasma generation method purifies the water.

  An eighth aspect of the present invention is the in-liquid plasma generation method according to the fifth aspect, wherein the liquid in which the decomposition target is in a mixed state is sewage, waste liquid, or sewage.

  A ninth aspect of the present invention is the in-liquid plasma generation method according to the fifth aspect, wherein the substance to be decomposed is a dye, and the dye is decomposed and decolorized.

  According to a tenth aspect of the present invention, in the third aspect, an active liquid in which the ionic species is excessively permeated and diffused is further circulated between electrodes to which a direct current voltage is applied. This is an in-liquid plasma generation method that forms an anion-rich or cation-rich ionic liquid by separating anion on the cathode side and separating and collecting the liquid on each electrode side.

  An eleventh aspect of the present invention includes a container for circulating or holding a liquid, one or more electrode pairs disposed in the liquid, and voltage applying means for applying a continuous high voltage pulse to the electrode pairs. At least one of the electrode pairs has one or more protrusions and a high-voltage insulating part, and a high-repetitive high-voltage pulse is applied between the electrodes by the voltage applying means, and the vicinity of the high-voltage electrode The liquid is Joule-heated and vaporized continuously or intermittently, and this vaporized bubble forms a vaporized bubble region that at least surrounds the tip of the projecting portion of the high-voltage electrode. A submerged plasma generator that ionizes (plasmaizes) vaporized substances in the bubbles by high-voltage dielectric breakdown discharge to form various ions and permeates and diffuses ion species in the plasma into the liquid. .

  According to a twelfth aspect of the present invention, in the eleventh aspect, the high voltage electrode is a needle electrode having a high voltage insulating portion, and the needle electrode protrudes into the liquid inside the container. In-liquid plasma generator.

  According to a thirteenth aspect of the present invention, in the eleventh or twelfth aspect, a supply device for supplying a gas from the high voltage electrode portion or a peripheral portion of the high voltage electrode portion; Means for applying a high voltage pulse to the electrode pair for ionization at the same time is provided, and the in-liquid plasma generator is configured to supplementally add additional ion species into the liquid.

  In a fourteenth aspect of the present invention, in any one of the first to thirteenth aspects, the ground electrode of the electrode pair is a conductive container or a conductive pipe constituting a part or all of the container. It is a plasma generator.

  According to a fifteenth aspect of the present invention, in any of the first to thirteenth aspects, a ground electrode of the electrode pair is a plate-like electrode disposed in the container, and the plate-like electrode is the liquid. Is a submerged plasma generator.

  A sixteenth aspect of the present invention is the submerged plasma generation device according to any one of the first to fifteenth aspects, wherein a plurality of the electrode pairs are arranged in the container along the flow direction of the liquid.

  According to a seventeenth aspect of the present invention, the liquid plasma generator according to any one of the first to sixteenth aspects and a liquid-to-be-processed supply unit that supplies a liquid to be processed containing a decomposition target are provided. In the apparatus for purifying liquid to be treated, the intermediate ionic species has one or more functions of decomposition, sterilization, and decolorization of the decomposition target, and reforms and / or removes the decomposition target.

  An eighteenth aspect of the present invention is the liquid to be treated purifying apparatus according to the seventeenth aspect, wherein the liquid to be treated is potable water, its raw water, sewage, waste liquid or sewage.

  According to a nineteenth aspect of the present invention, the in-liquid plasma generator according to any one of the eleventh to seventeenth aspects and an ion separation unit are provided. The ion separation unit includes a flow path for circulating the liquid, It is composed of at least one electrode pair disposed on both sides of the flow path and a power source for applying a DC voltage to the electrode pair. The negative voltage electrode direction of the electrode pair is cation rich or positive voltage electrode direction. Is an ionic liquid supply device for separating and recovering an anion-rich ionic liquid.

According to the first aspect of the present invention, an electrode pair consisting of a high voltage electrode, at least one of which is formed with a high voltage insulating part and one or more protrusions, is immersed in a liquid, Since the high voltage pulse is applied, the electric field can be concentrated on the tip of the protruding portion, and the liquid near the high voltage electrode can be Joule-heated with high efficiency. Furthermore, a desired amount of vaporized bubbles can be generated by applying a high voltage pulse to the electrode pair to boil and vaporize the liquid, and a vaporized bubble region having a suitable size can be generated by the growth and / or aggregation of the vaporized bubbles. Can be formed. That is, the vaporized bubble region is formed of a plurality of vaporized bubbles and / or vaporized bubbles grown to a predetermined size. When a high voltage pulse is applied to the electrode pair, there is a high potential difference with a high gradient from the upper end to the high voltage electrode in the insulating gas bubble region with respect to a conductive or relatively low resistance liquid. Arise. Therefore, the vaporized substance is ionized (plasmaized) by the high-voltage breakdown discharge in the vaporized bubble region caused by the high-voltage pulse, and plasma or ion species contained in the plasma can be continuously generated. The ionic species can be osmotically diffused (dissolved and / or diffused) into the liquid to provide a desired active ionic species solution. The extent to which the generation of ionic species in the vaporization vesicle region and dissolution / diffusion into the liquid, the binding of the positive and negative ionic species (neutralization), and the liquefaction of the vaporized molecules are in an equilibrium state, and the generation of plasma is suitably performed. To keep the vesicular region of. Furthermore, if the repetition frequency of the high voltage pulse is applied with appropriate power and the vaporized bubbles and ionic species can be generated sufficiently, the liquid may be circulated in the container, and the liquid may be continuously and in large quantities. We can expect efficient processing.
Furthermore, according to the method for generating plasma in liquid according to the present invention, various ion species liquids can be generated by osmotic diffusion of ion species in the plasma into the liquid, and the applied high voltage pulse is adjusted. Thus, an ionic seed solution having a predetermined ion concentration can be supplied by boiling or evaporating the liquid continuously or intermittently. As the liquid, various solutions can be used as long as they are conductive solutions, and solutions or conductive solutions in which water, alcohols, phenols, carboxylic acids, or derivatives thereof with conductivity are mixed and dissolved are used. Plasma can be generated by supplying various solutions containing ions or the like for imparting properties. In addition, an alkaline aqueous solution such as ammonia water, lime water, sodium hydroxide aqueous solution, or sodium bicarbonate water can be supplied as the liquid, and these liquids are filled in the container so that the electrode pair is immersed therein. The Moreover, not only a water supply system and a sewerage system, but it can purify these to-be-processed liquids by supplying manure, livestock waste water, factory waste water, etc. to the said container.

According to the second aspect of the present invention, since the high-voltage electrode is a needle-like electrode having a high-voltage insulating portion, the electric field can be concentrated at a high density by the tip of the needle-like electrode. The liquid in the vicinity of the high voltage electrode made of the electrode can be Joule-heated with high efficiency. Therefore, a suitable vaporized bubble region that surrounds at least the tip of the needle electrode can be formed, and the vaporized bubble region can be converted into plasma by a high-voltage electric field, and desired ion species can be continuously supplied.
Furthermore, both the ground-side electrode and the high-voltage electrode of the electrode pair can be constituted by the needle-like electrodes, and a suitable vaporization bubble region can be constituted at both tip portions between the needle-like electrodes immersed in the liquid. At the same time, a high electric field gradient can be generated in the vaporized bubble region, and plasmaization in the vaporized bubble region can be easily performed.

  According to the third aspect of the present invention, it is possible to generate various active ionic species liquids from the liquid by excessively osmotically diffusing ionic species in the plasma into the liquid, so that it is limited to purification of drinking water and sewerage. In addition, it is possible to supply an active ionic seed solution having a high treatment capacity that can be used in manure treatment, livestock wastewater treatment, factory wastewater treatment, and the like. In addition, various active ionic species liquids in which the ionic species excessively permeate and diffuse into the liquid can be generated according to the purpose by the liquid supplied into the container. It is also possible to vaporize by Joule heat and decompose by ionization (plasmaization) by forming a vaporized bubble region.

  According to the fourth aspect of the present invention, one or more types of gases serving as ion species sources are supplied from the high voltage electrode or a gas supply port provided in the periphery of the high voltage electrode, and the vaporized bubbles are supplied. It can be mixed and ionized simultaneously with the vaporized product. That is, the additional ionic species can be supplementarily mixed with the ionic species formed from the vaporized bubbles. Accordingly, since the additional ionic species formed by ionizing the ionic species and the supply gas are excessively permeated and diffused in the liquid to generate an active ionic species liquid, the ionic species appropriately contained according to the purpose of use. Can be selected. As the supply gas, oxygen, hydrogen, nitrogen, chlorine, etc., inorganic gases composed of compounds, and organic gases such as air or hydrocarbon gases can be supplied according to the purpose. A gas mixture can also be supplied. For example, the additional ion species can be supplementarily mixed according to substances or microorganisms to be treated in drinking water or sewer purification facilities or various wastewater treatment facilities.

  According to the fifth aspect of the present invention, the liquid is a liquid in which the decomposition target is in a mixed state, and the decomposition target is decomposed by the active ion species accumulated in the liquid. In addition to the substance to be dissolved, various substances to be decomposed can be decomposed to perform liquid purification treatment or reforming treatment. That is, non-soluble harmful substances, solid substances having a size larger than a predetermined size, and substances that take a long time to dissolve can be decomposed by the active ion species.

  According to the sixth aspect of the present invention, since the liquid is a liquid in a mixed state of two or more types, the chemical reaction between the liquids in the mixed state is promoted by the active ion species accumulated in the liquid. be able to. Further, by selecting the ionic species, it is possible to decompose contaminants contained in the liquid. Two or more kinds of various liquids can be mixed according to the purpose. For example, two or more kinds of solutions can be mixed from water, alcohols, phenols, carboxylic acids, derivatives thereof, etc. Can be provided. Moreover, while promoting the said chemical reaction, the solution which has suitable electroconductivity for a solution can be mixed, and the electroconductivity between electrodes can be improved. Not only sewers, but also urine, livestock wastewater, factory wastewater, etc. are mixed with two or more types of hazardous waste liquids, and these harmful substances are simultaneously decomposed to purify waste liquids in which two or more types are mixed. be able to.

According to the seventh aspect of the present invention, the liquid is potable water or its raw water, and the ionic species in the plasma can easily supply H ⁺ and OH ⁻ , and this active ionic species solution is used. Thus, the water can be purified with high efficiency by decomposing and / or sterilizing the substances to be decomposed (bacteria, microorganisms, etc.) contained in the water. Further, the gas is supplementarily supplied to the drinking water or its raw water to excessively permeate and diffuse the additional ion species and H ⁺ and OH ⁻ , so that various harmful microorganisms and fungi contained in the water (E. coli, bacteria, etc.) can be reliably sterilized and purified.

  According to the eighth aspect of the present invention, since the liquid in which the decomposition target is in a mixed state is sewage, waste liquid, or sewage, the liquid is boiled to form vaporized bubbles, and the vaporized substance is converted into plasma. In addition, the object to be decomposed can be effectively decomposed by the ion species contained in the plasma. Therefore, harmful microorganisms such as manure contained in the sewage, waste liquid or sewage, residual organic pollutants (POPs) dissolved in the liquid, Escherichia coli and bacteria can be easily decomposed and / or sterilized.

  According to the ninth aspect of the present invention, the substance to be decomposed is a dye, and the liquid containing the dye is directly supplied into the container in which the electrode pair is disposed. The decolorization of the pigment can be easily performed. Conventionally, it has been very difficult and costly to completely decompose the dye, but according to the method for generating plasma in liquid according to the present invention, the dye can be easily decomposed almost completely.

  According to the tenth aspect of the present invention, the active liquid in which the ionic species are excessively permeated and diffused is circulated between electrodes to which a DC voltage is further applied. Since ions are separated on the anode side, an anion-rich or cation-rich ionic liquid can be separated and recovered with high efficiency. Furthermore, if an anion-rich or cation-rich ionic liquid separated and recovered is supplied and an oxidation-reduction reaction is performed, various acidic solutions or alkaline solutions discharged as waste liquid can be neutralized. Furthermore, alkaline ionized water and facially ionized acidic ionized water are widely used as health water, and if the in-liquid plasma generation method according to the present invention is used, health consisting of high-quality alkaline ionized water or acidic ionized water. Water can be produced.

According to the eleventh aspect of the present invention, a container that circulates or holds a liquid, one or more electrode pairs disposed in the liquid, and a voltage application that applies a continuous high voltage pulse to the electrode pairs. At least one of the electrode pairs has one or more protrusions and a high voltage insulating portion, and the high voltage is applied by applying a high repetitive high voltage pulse between the electrodes by the voltage applying means. Since the liquid in the vicinity of the electrode is Joule-heated to be boiled and vaporized, a vaporized bubble region that can be ionized in the liquid can be formed continuously or intermittently, and the vaporized material in the vaporized bubble region can be converted into plasma. More specifically, a high voltage pulse causes a high potential difference with a high gradient from the upper end to the high voltage electrode in the insulating vaporized bubble region, and the vaporized material in the vaporized bubble region is caused by the high voltage breakdown discharge. It can be turned into plasma and ion species can be generated continuously. Furthermore, since the ionic species in the plasma are permeated and diffused into the liquid to generate an active ionic species solution, a high voltage pulse is adjusted to continuously evaporate the liquid to a predetermined level by boiling. An ionic seed solution having an ionic concentration of can be supplied.
Furthermore, the high voltage electrode constituting the electrode pair only needs to be formed of a conductive member having one or more protrusions. The high voltage insulating portion is provided on the conductive member, and high voltage pulse applying means is provided. By connecting, various conductive members can be used as high voltage electrodes. Also, the ground electrode can be made of various conductive members, and the conductive container body can be used as the ground electrode. Furthermore, the plasma generated in the vaporized bubble region can freely adjust parameters such as the maximum voltage, repetition rate, pulse width and pulse shape of the high voltage pulse to be applied according to the type of gas contained in the vaporized bubble. Thus, suitable ionic species can be generated. The parameter can be adjusted to a suitable value depending on the type of liquid in which the electrode pair is immersed. In order to generate vaporized bubbles in various liquids and generate a suitable plasma of vaporized material in the vaporized bubble region, the maximum value of a preferable high voltage pulse is about 1 kV to 50 kV, and the repetition rate is 1 kHz to 100 kHz. It is preferable to have a return frequency. Moreover, the time width of a preferable high voltage pulse is about 1 μs to 20 μs, and it is preferable to apply a rectangular wave high voltage pulse having a time width in this range.

  According to the twelfth aspect of the present invention, the high voltage electrode is a needle electrode having a high voltage insulating portion, and the needle electrode is disposed so as to protrude into the liquid inside the container. The electric field can be concentrated at a high density by the tip of the electrode, and the liquid in the vicinity of the high voltage electrode can be Joule-heated with high efficiency. Furthermore, both the ground-side electrode and the high-voltage electrode of the electrode pair can be constituted by the needle-like electrode, and a high-voltage breakdown discharge in the vaporized bubble region can be performed with high efficiency. It is possible to suppress the power consumption consumed for generating the energy, improve the energy efficiency, and significantly reduce the running cost. Moreover, when using two acicular electrodes as an electrode pair, the interval between the acicular electrode tips is preferably about 1 mm to 100 mm, more preferably about 3 mm to 50 mm, Ionization can be performed.

  According to the thirteenth aspect of the present invention, since the supply device for supplying gas from the high voltage electrode portion or the peripheral portion of the high voltage electrode portion is provided, one or more kinds of gases serving as the ion species source are supplied to the high voltage electrode. It can supply to the part vicinity. Accordingly, the additional gas species can be supplementarily mixed with the vaporized gas species formed in the vaporized bubbles. Furthermore, since a means for applying a high voltage pulse for ionization to the electrode pair is provided, it is mixed in the vaporized bubble and simultaneously ionized, so that the additional ion species can be mixed in the liquid as an auxiliary. . From the supply device, it is possible to supply organic gases such as air or hydrocarbon gas in addition to inorganic gases composed of oxygen, hydrogen, nitrogen, chlorine, etc. or compounds.

  According to the fourteenth aspect of the present invention, since the ground electrode of the electrode pair is a conductive container or a conductive pipe constituting a part or all of the container, the ground electrode is not installed in the container, An electrode pair can be formed by disposing only one or more high-voltage electrode portions. Therefore, the in-liquid plasma generator according to the present invention has a relatively simple structure, can be easily manufactured, and is used for conductive pipes for distributing urine, waste liquid, waste water, etc. and conductive containers for retaining these liquids. The in-liquid plasma generator can be easily installed, and the initial cost can be greatly reduced. Various materials can be used for the material forming the pipe and the container as long as they have suitable conductivity, and the metal material preferably has corrosion resistance against the supplied liquid.

  According to the fifteenth aspect of the present invention, the ground electrode of the electrode pair is a plate electrode disposed in the container, and the plate electrode is disposed in contact with the liquid. The electric field is concentrated on the tip of the high-voltage side electrode in the shape of a needle or needle, the Joule heat is generated with high efficiency, and the suitable vaporized bubble region is formed in a range including at least the tip. Accordingly, the inside of the vaporized bubble region can be reliably ionized (plasmaized) by high voltage dielectric breakdown discharge to generate a desired ion species.

  According to the sixteenth aspect of the present invention, since a plurality of the electrode pairs are arranged along the flow direction of the liquid in the container, the flowing liquid is continuously subjected to high-voltage breakdown discharge, Since the dissolution concentration can be reliably increased, a high concentration of active ionic seed solution can be continuously supplied. A voltage applying means may be connected to each electrode pair, or a voltage applying means shared by each electrode pair can be connected. In any case, a suitable high voltage pulse can be obtained by providing a control means. Can be applied to each electrode pair.

  According to a seventeenth aspect of the present invention, the liquid plasma generator according to any one of the first to sixteenth aspects and a liquid supply means for supplying a liquid to be processed containing a decomposition target, One or more functions of decomposition, sterilization, and decolorization of the decomposition target can be imparted to the ionic seed solution in the liquid. Therefore, various harmful substances to be decomposed contained in manure, factory effluent, livestock effluent, etc. can be decomposed, sterilized and decolored for modification and / or removal, and the liquid to be treated can be purified with high efficiency. Can do.

  According to the eighteenth aspect of the present invention, since the liquid to be treated is potable water, its raw water, sewage, waste liquid or sewage, depending on the ionic species having one or more actions among decomposition, sterilization and decolorization, Persistent organic pollutants (POPs) and harmful microorganisms dissolved in these liquids can be decomposed, sterilized and decolorized. For example, harmful microorganisms such as manure contained in the sewage, waste liquid or sewage, POPs in the liquid, and Escherichia coli can be easily decomposed, sterilized and decolorized for purification.

According to a nineteenth aspect of the present invention, the in-liquid plasma generator according to any one of the eleventh to seventeenth aspects and an ion separation unit are provided, and the ion separation unit includes a flow path for circulating the liquid. It is composed of at least one electrode pair disposed on both sides of the flow path and a power source that applies a DC voltage to the electrode pair, so that cation-rich and anion-rich are efficiently separated and recovered. Thus, a desired ionic liquid can be supplied. When the liquid to be supplied is an active ion species containing high concentration OH ⁻ ions and H ⁺ as ion species in advance by the in-liquid plasma generator according to the present invention, as in the existing technology, calcium lactate or salt Efficient separation into alkaline water and acidic ion water by an inexpensive DC electric field separation device without adding an electric field accelerator such as, and without using an ion permeable membrane for ion separation. can do.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic configuration diagram of an in-liquid plasma generator 2 according to the present invention. In the container 4, a needle electrode 6 as a high voltage electrode and a plate electrode 8 as a ground electrode are disposed. The plate-like electrode 8 is connected to the earth 12 via the ground-side terminal 10, and the needle-like electrode 6 is composed of a needle-like electrode member 6 a and a high-voltage insulating portion 6 b, and will be described later by the high-voltage-side terminal 13. The high voltage pulse applying means 21 is connected. The electrode pair composed of the needle-like electrode 6 and the plate-like electrode 8 is immersed in the liquid 14 in the container 4. The liquid 14 is supplied from the inflow pipe 16 and supplied from the outflow pipe 18 to the outside of the apparatus. Has been.

  The high voltage pulse applying means 21 includes an AC power source 20, a DC generator 22, an inverter 23 and a pulse transformer 24. The voltage of the AC power supply 20 is converted into a DC voltage by a DC generator 22 and then converted into a rectangular wave pulse voltage having a repetition frequency of 1 kHz to 100 kHz and a pulse width (time width) of 1 μs to 20 μs by an inverter 23. The pulse voltage is boosted by the pulse transformer 24 so as to have a potential difference of 1 kV to 50 kV and applied to the high voltage electrode.

  As described above, the high voltage electric field 26 by the high voltage pulse is applied to the electrode pair composed of the needle electrode 6 and the plate electrode 8 (ground side) via the high voltage terminal 13. As will be described in detail later, since the electric field concentrates on the tip portion 6c of the needle-like electrode portion 6a, Joule heat for boiling and evaporating the liquid 14 is generated with the application of the high voltage pulse, and the needle-like electrode is generated from the generated bubble. A vaporized bubble region 28 that surrounds at least the tip 6c of the portion 6a is formed. Further, the vaporized bubble region 28 may contain a gas that is supplementarily supplied from a gas supply means provided in the peripheral portion of the tip portion 6c or the needle electrode portion 6a, which will be described below. In the following drawings, the above-described symbols are omitted unless particularly described.

  FIG. 2 is a schematic configuration diagram of the gas supply means 34 according to the present invention. A gas supply port 30 is provided at the distal end portion 6c of the needle-like electrode portion 6a protruding from the high-voltage insulating portion 6b, and gas supply means is provided via a gas supply pipe 32 formed in the needle-like electrode portion 6a. An auxiliary gas is discharged from the gas supply port 30 from 34. This auxiliary gas is a source of one or more ion species, and specifically, oxygen, hydrogen, nitrogen, chlorine, etc. and inorganic gases composed of these compounds, as well as air or hydrocarbon gases, etc. One or more organic gases are mixed and supplied according to the purpose. The auxiliary gas is mixed with vaporized bubbles generated by Joule heat to form a vaporized bubble region 28, and together with the ion species generated from the vaporized bubbles generated from the liquid, the auxiliary gas is converted into plasma and added ions. A seed is formed and supplemented with the ionic species.

  FIG. 3 is an explanatory diagram of a plasma generation mechanism according to the present invention. As described above, in (3A), the high voltage electric field 26 is applied to the electrode pair composed of the needle electrode 6 and the plate electrode 8 (ground side) by the high voltage pulse applying means 21, and the needle electrode portion When the electric field concentrates on the tip 6c of 6a, the current density increases, and a large Joule heat that causes the liquid 14 to boil off is generated. As shown in (3B), vaporized bubbles 28a are generated from the vicinity of the tip of the needle-like electrode 6 due to the Joule heat, and the tip 6c is at least surrounded by the collection and / or growth of the vaporized bubble 28a to insulate. A vaporized bubble region 28 having a property is formed. Further, as shown in (3C), the high voltage electric field 26 causes the electric field to concentrate on the vaporized bubble region 28 which has grown due to the generation of a large amount of the vaporized bubbles 28a, thereby increasing the electric field density. Discharge is caused. Therefore, the vaporized substance existing in the vaporized bubble region 28 is ionized (plasmaized), and the plasma 5 in the liquid composed of positive and negative ion species is generated. The plasma 5 emits light in the form of a flame in the vaporized bubble region 28, and the vaporized substance is continuously converted into a plasma, so that the plasma state is flamed in the vaporized bubble region 28 according to the size of the vaporized bubble region 28. It is held while shaking.

  In the in-liquid plasma generation method and apparatus according to the present invention, as described above, the high-voltage electric field 26 is concentrated and applied in the vaporized bubble region 28 by the high-voltage pulse, and FIG. A schematic diagram of the potential difference in the electrode pair and vaporization bubble region 28 and the high voltage pulse applied to the electrode pair is shown. (4A) shows a potential difference V between the electrode pair from the ground side electrode (plate electrode 8 in FIG. 3) to the high voltage electrode (needle electrode 6 in FIG. 3) generated by the high voltage pulse. ing. The horizontal axis indicates the distance d from the ground-side electrode, and the potential difference increases with a low gradient to the upper end position Pgas of the vaporized bubble region in the conductive liquid. The vaporized bubble region is electrically insulated, and the potential difference increases steeply from the upper end position Pgas to the tip position Pe of the high voltage electrode. That is, as described above, a high-voltage electric field is applied to the vaporized bubble region, and high-efficiency plasma formation is possible. Therefore, in (3C) of FIG. 3, the plasma or ion species included in the plasma is generated continuously or intermittently according to the repetition frequency of the high voltage pulse, and the ion species penetrates into the liquid 14. By diffusing (dissolving and / or diffusing), an active ionic seed solution is generated. The energy supplied from the high-voltage pulse power supply is in an equilibrium state between the generation of ionic species and dissolution / diffusion into the liquid, the binding of the negative and positive ionic species (neutralization), and the liquefaction of the vaporized molecules. The vaporized vesicle region 28 is held to such an extent that plasma is suitably generated.

The high voltage electric field 26 is a high voltage pulse applied by the high voltage pulse applying means 21, and (4B) to (4D) in FIG. 4 show various high voltage pulses applied to the electrode pairs according to the present invention. The high voltage pulse applying means 21 generates a high voltage rectangular wave pulse as shown in (4B) and applies it to the electrode pair. The inverter 23 shown in FIG. 1 sets a repetition frequency of 1 kHz to 100 kHz and a pulse width Δt within a range of 1 μs to 20 μs. Further, it is converted into a rectangular high voltage pulse shown in FIG. 4 (4A) by the pulse transformer 24 and boosted to have potential differences V ₊ and V ₋ in the range of 1 kV to 50 kV and −50 kV to −1 kV. Converted to voltage pulse. Further, the AC voltage can be rectified at the subsequent stage of the pulse transformer, and a high voltage pulse as shown in (4C) and (4D) can be applied.

  FIG. 5 is a schematic configuration diagram when the electrode pair according to the present invention is composed of two needle-like electrodes. The needle-like electrode 6 connected to the high voltage side terminal 13 is used as a function as a high voltage electrode as described above. In this embodiment, the ground side needle electrode 9 is also connected to the ground side terminal 10. This ground-side needle-like electrode 9 has the same configuration as the high-voltage-side needle-like electrode 6 and is composed of a needle-like electrode member 9a and a high-voltage insulating portion 9b. As shown in FIG. An auxiliary gas supply means may be disposed at the tip 9c or the peripheral portion of the grounded needle-like electrode 9.

  When an electrode pair is constituted by the two needle-like electrodes 6 and the ground-side needle-like electrode 9, the distance between the electrodes to which the high voltage electric field 26 is applied is preferably about 1 mm to 100 mm, and about 3 mm to 50 mm. More preferably, it is about. In particular, when the distance is about 3 mm to 50 mm, a suitable bubble region 28 is formed, and the vaporized material in the bubble region 28 can be converted into plasma with high efficiency. Since the electric field concentrates at the tip portions 6c and 9c of the two needle-like electrodes at high density, vaporized bubbles 28a are generated from the tip portions 6c and 9c of the electrode pair, and at least surround both the tip portions 6c and 9c. Since the two vaporized bubble regions 28 are formed, the vaporized product can be converted into plasma with high efficiency to generate ionic species.

  FIG. 6 is a schematic configuration diagram showing various forms of the needle electrode 6 according to the present invention. (6A) shows the conical needle electrode 6, and the electric field can be concentrated with high efficiency at the tip 6c of the sharpened needle electrode member 6a. In (6B), the tip of the needle-like electrode member 6a is formed in a concave shape, and two sharp tip portions 6c are formed by performing simple processing on the cylindrical needle-like electrode member. The electric field can be concentrated on the two tip portions 6c with high density, and the manufacturing cost of the tip needle-like electrode member can be greatly reduced. In (6C), a plurality of gas supply ports 30 are formed on the side surface of the cylindrical needle-like electrode member 6a, and an auxiliary gas serving as an auxiliary ion species source is efficiently supplied into the vaporized bubble region. Can do. Furthermore, it is possible to appropriately supply another type of auxiliary gas from each gas supply port 30.

  (6D) is a needle-like electrode 6 configured by disposing a cylindrical needle-like electrode member 6a below the tip of the high-voltage insulating portion 6b. By exposing only the tip portion 6c of the needle-like electrode member 6a in the liquid, the high-voltage electric field can be concentrated on the tip portion 6c with high efficiency, and formation of the vaporized bubble region and plasma formation can be performed with high efficiency. Done. Furthermore, a gas supply port is provided at the tip 6c, and various auxiliary gases can be mixed in the vaporized bubble region in accordance with the generated active ionic seed solution. Further, since the side surface of the needle electrode member 6a is protected by the high voltage insulating portion 6b and is not exposed to the liquid, the needle electrode member 6a is prevented from being corroded or oxidized by the liquid, and the length of the needle electrode is reduced. Life expectancy is achieved. In the embodiment shown in (6D), the tip portion 6c is located below the tip of the high voltage insulating portion 6b, but the tip and the tip portion 6c are arranged at the same position. Also good.

  FIG. 7 is a schematic configuration diagram of an in-liquid plasma generator equipped with the liquid supply pump 36 according to the present invention. The liquid 14 may be retained and reformed to a desired active ionic seed solution and then supplied to the outside. However, the active ionic seed solution is continuously supplied by circulating the liquid 14. Can do. That is, the ion concentration of the active ionic species liquid can be controlled by adjusting not only the various parameters of the high voltage pulse, the type and supply amount of the auxiliary gas, but also the flow rate by the liquid supply pump 36. In addition, when the liquid 14 supplied from the inflow pipe 16 contains an object to be processed, it is preferable to dissolve ionic species excessively in the liquid 14 and sequentially decompose and / or sterilize the object to be processed. The liquid supply pump 36 adjusts the supply amount of the liquid 14 containing the object to be processed (hereinafter also referred to as “the liquid 14 to be processed”) according to the processing speed. Accordingly, the liquid 14 that has been almost completely decomposed and / or sterilized and purified can be supplied to the outside from the outflow pipe 18.

  FIG. 8 is a schematic configuration diagram of an in-liquid plasma generating apparatus including the metal container 38 according to the present invention. As the ground-side electrode constituting the electrode pair, a conductive container can be used. In the submerged plasma generator shown in the figure, the metal container 38 connected to the ground 12 is used as the ground-side electrode. Therefore, the high voltage pulse is applied between the tip 6c of the needle-like electrode 6 and the metal container 38, the vaporized bubble region 28 is formed by Joule heat, and the vaporized material in the vaporized bubble region 28 is insulated at high voltage. Plasma is generated by destructive discharge, and ionic species permeate and diffuse into the solution 14. Even when the metal container 38 is used, an electric field concentrates at a high density at the tip portion 6c of the needle-like electrode 6, and at least a vaporization bubble region suitable for generating plasma surrounding the tip portion 6c is formed. The

  FIG. 9 is a schematic configuration diagram of an in-liquid plasma generating apparatus in which a plurality of electrode pairs according to the present invention are disposed in a liquid circulation pipe 39. This submerged plasma generator is composed of a liquid circulation pipe 39 and a plurality of electrode pairs, and these electrode pairs are arranged so as to be immersed in the liquid 14 supplied from the inflow pipe 41. In this embodiment, a high voltage pulse applying means 21 connected to the ground 21a is connected to each needle electrode. In this embodiment, the mechanism of generating the active ionic seed solution is the same as that in the in-liquid plasma generator shown in FIG. 1, and in the vicinity of the vaporized bubble region 28 of the first needle electrode 45a on the inflow tube 41 side. The generated active ionic seed solution is supplied to the vicinity of the vaporized bubble region 28 of the second needle-like electrode 62 on the downstream side.

  In the in-liquid plasma generator of FIG. 9, a plurality of needle-like electrodes are disposed in the liquid circulation pipe 39 and the supplied liquid always flows through the liquid circulation pipe 39. A first guiding path 42a and a second guiding path 42b are respectively formed. The liquid having a relatively low ionic concentration, which has passed through the upper part of the liquid circulation pipe 39 and has not sufficiently permeated and diffused ionic species, is brought close to the bubbling region 28 of the second needle electrode by the first guide path 42a. Be guided. In addition, since the active ionic species liquid that circulates in the vicinity of the vaporized bubble region 28 of the first needle-like electrode 45a and rises along the vicinity of the outer wall of the guide path 42a, the upper portion of the liquid circulation pipe 39 is increased. The ion concentration is made uniform by mixing with the liquid, and it is guided to the vicinity of the bubbling region 28 of the second needle electrode through the guide path 42a.

  Similarly, the active ionic seed solution supplied to the vicinity of the bubbling region 28 of the second acicular electrode has a bubbling region of the third acicular electrode 45c so that the ion concentration is made uniform by the second guiding path 42b. 28, the ion concentration of the active ionic seed solution is made uniform. Accordingly, an active ionic seed solution having a uniform and high ion concentration is supplied from the outflow pipe 43 of the liquid circulation pipe 39. Further, when the supplied liquid is a liquid containing the object to be processed (processed liquid), the object to be processed is uniformly decomposed, sterilized, and decolored by equalizing the opportunity to react with the active ion species. In other words, the liquid to be treated that has been purified almost uniformly can be supplied from the outflow pipe 43.

  FIG. 10 is a schematic configuration diagram of an in-liquid plasma generating apparatus in which a plurality of electrode pairs according to the present invention are arranged on a metal pipe 44 for liquid circulation. The distribution mechanism of the liquid 14 is the same as that of the in-liquid plasma generator shown in FIG. 9 and will not be described. However, in the embodiment shown in FIG. 10, the ground side electrode is connected to the ground 12 at the ground side connection point 48. It is comprised from the metal pipe 44 for liquid distribution | circulation connected to. That is, like the submerged plasma generator shown in FIG. 8, each electrode pair is composed of the metal pipe 44 and each of the needle-like electrodes 45a to 45b, and the electric field is concentrated on the tip of each of the needle-like electrodes 45a to 45b. By evaporating to boiling, a vaporized bubble region that at least surrounds each tip is formed. In this embodiment, an in-liquid plasma generator is provided by disposing the needle-like electrodes 45a to 45b and the first and second guide paths 42a and 42b in an existing metal pipe 44 through which the liquid 14 flows. Can do. Therefore, the wastewater treatment apparatus can be easily installed in the conductive wastewater pipe or the like, and the initial cost of the wastewater treatment apparatus can be greatly reduced.

  FIG. 11 is a schematic configuration diagram of a submerged plasma generator having a high-voltage pulse distribution means 50 according to the present invention and having a plurality of electrode pairs arranged in a liquid circulation pipe. In the in-liquid plasma generator having a plurality of electrode pairs shown in FIGS. 9 and 10, a high voltage pulse applying means 21 is connected to each of the needle-like electrodes 45a, 45b, 45c. However, as shown in FIG. 11, a high voltage pulse suitable for each electrode pair is applied by connecting one high voltage pulse applying means 21 to each of the needle electrodes 45a to 45b via the distributing means 50. can do. Therefore, it is not necessary to install an expensive high-voltage pulse power supply for each electrode pair, and the initial cost can be reduced.

  FIG. 12 is a schematic configuration diagram of the in-liquid plasma generator 2 in which the high voltage electrode according to the present invention is configured by the projecting electrode 15. In this embodiment, the high voltage electrode is constituted by the projecting electrode 15, and the high voltage insulating portion 15b is covered so that the two tip portions 15c of the conductive projecting member 15a are exposed in the liquid. The protruding electrode 15 according to the present invention can be used as the protruding electrode 15 by forming the high voltage insulating portion 15b on various conductive members having one or more protruding portions. Other configurations are the same as those in FIG. 1, and the needle electrode 6 is replaced with the protruding electrode 15. That is, an electrode pair is formed by the projecting electrode 15 and the plate electrode, and an electric field is concentrated on the tip 15c by the applied high voltage electric field 26, and the electric field strength is increased to evaporate the liquid 14 by boiling. Is generated. Therefore, the vaporized bubble region 28 surrounding at least the tip portion 15c is formed, and the vaporized material in the vaporized bubble region 28 is turned into plasma, and the ionic species are diffused into the liquid.

  FIG. 13 is a schematic configuration diagram showing an ionic liquid separation and recovery means according to the present invention. An ionic liquid supply device is configured by disposing an ionic liquid separation and recovery means in the above-described in-liquid plasma generator. The separation / recovery means includes a separation container 54, a negative electrode 56a and a positive electrode 56b installed on both sides of the separation container 54, and a DC power source 68 for applying a voltage to these electrodes (see FIG. 14). ). The separation vessel 54 is provided with an ionic seed solution supply pipe 58 into which an active ionic seed solution is introduced from the in-liquid plasma generator, and an anion outlet 59 and a cation outlet for supplying the separated and recovered ionic liquid. 61 is provided. First to fourth partition walls 54a, 54b, 54c, and 54d are formed in the separation container 54, and further, a first separation wall 54e that separates the ionic liquid in the previous stage of the final stage, an anionic seed liquid, and a cation A second separation wall 54f that finally separates the seed solution is formed. Accordingly, first to third separation tanks 60a, 60b, 60c are provided in the separation container 54, and further, a first cation separation tank 62a, a second cation separation tank 62b, and a first anion separation tank 64a. And the 2nd anion separation tank 64b is provided.

  FIG. 14 is a top view of the separation / recovery means according to the present invention, and illustrates a method for separating and recovering ionic liquid. As the active ion seed solution supplied from the in-liquid plasma generator 2 flows into the first separation tank 60a to the third separation tank 60c, the negative ions are separated to the positive electrode side and the positive ions are separated to the negative electrode side. To go. As shown in the cross-sectional view along line AA of the separation and recovery container 54 in FIG. 15, the first to fourth partition walls 54a, 54b, 54c, and 54d are provided with a separation liquid guiding path 55, and the height is gradually reduced. At the same time, the ionic seed solution flowing from the upper part of each partition is discharged from the lower part of the partition to the next tank. The anion and the cation are separated into each electrode side in a stepwise manner and flow into the adjacent separation tank. As shown in FIGS. 14 and 15, the first separation liquid 65a supplied from the ionic species supply pipe 58 to the first separation tank 60a passes through the second separation liquid 65b of the second separation tank 60b, and the third separation tank When flowing into 60c, the third separation liquid 65c is substantially separated into the anion seed liquid and the cation seed liquid toward each electrode.

Further, as shown in FIG. 14, a first separation wall 54e and a second separation wall 54f are formed and separated by a first cation separation tank 62a and a first anion separation tank 64a, and further a second cation separation tank. In 62b and the 2nd anion separation tank 64b, it isolate | separates into a high purity anion seed solution and a cation seed solution. In the embodiment shown in FIG. 14, an active ionic seed solution is generated from water in the in-liquid plasma generator 2. That is, water is boiled and vaporized by the Joule heat to form a vaporized bubble region composed of water molecules (H ₂ O), and plasma composed of hydroxyl groups (OH ⁻ ) and hydrogen ions (H ⁺ ) is generated by the high voltage pulse. Is generated. Therefore, an active ionic seed solution in which hydroxyl groups (OH ⁻ ) and hydrogen ions (H ⁺ ) are dissolved flows from the ionic seed solution supply pipe 58, and finally, alkaline ion water and acidic ion water are separated, The respective ionic liquids are supplied from the anionic seed solution outflow tube 59a and the cation seed solution outflow tube 61a.

  The present invention is not limited to the above-described embodiments and modifications, and includes various modifications and design changes within the technical scope without departing from the technical idea of the present invention. Needless to say.

  The in-liquid plasma generation method and the in-liquid plasma generation apparatus according to the present invention cause active ion species to permeate and diffuse excessively in the liquid by plasma, and to be decomposed substances (toxic substances, fungi, microorganisms, dyes, etc.) ) Can be decomposed, sterilized and decolorized. Therefore, install or apply submerged plasma generators, submerged plasma generation methods and treated liquid purifiers to sewerage treatment facilities, human waste treatment facilities, factory wastewater treatment facilities, livestock wastewater treatment facilities, lake water purification facilities, etc. By doing so, substances and microorganisms that cannot be removed by biological treatment by the activated sludge treatment method can be deodorized, decolorized and sterilized, and the pollutants can be treated with high efficiency. In addition, according to the ionic liquid supply device according to the present invention, plasma is generated in the vaporized bubble region in the liquid to generate the active ionic seed liquid. Health water and industrially available treated water can be manufactured

It is a schematic block diagram of the in-liquid plasma generator based on this invention. It is a structure schematic diagram of the gas supply means which concerns on this invention. It is explanatory drawing of the plasma generation mechanism which concerns on this invention. It is the schematic of the potential difference in the electrode pair and vaporization bubble area | region which concerns on this invention, and the high voltage pulse applied to an electrode pair. It is a structure schematic diagram in case the electrode pair which concerns on this invention is comprised from two acicular electrodes. It is the structure schematic which shows the various form of the acicular electrode which concerns on this invention. 1 is a schematic configuration diagram of an in-liquid plasma generation apparatus including a liquid supply pump according to the present invention. It is a schematic block diagram of the in-liquid plasma generator comprised from the metal container which concerns on this invention. 1 is a schematic configuration diagram of an in-liquid plasma generator in which a plurality of electrode pairs according to the present invention are arranged in a liquid circulation pipe. 1 is a schematic configuration diagram of an in-liquid plasma generator in which a plurality of electrode pairs according to the present invention are arranged in a metal pipe 44 for liquid circulation. 1 is a schematic configuration diagram of an in-liquid plasma generation apparatus including a high-voltage pulse distribution unit according to the present invention and having a plurality of electrode pairs disposed in a liquid circulation pipe. It is a schematic block diagram of the in-liquid plasma generator with which the high voltage electrode which concerns on this invention is comprised from a protruding member. It is a schematic block diagram which shows the separation-and-recovery means of the ionic liquid which concerns on this invention. It is a top view of the separation and recovery means according to the present invention. It is an AA line sectional view of a separation collection container concerning the present invention. It is a schematic block diagram of the to-be-processed liquid purification apparatus using the conventional high voltage.

Explanation of symbols

2 Submerged Plasma Generator 4 Container 5 Plasma 6 Needle-like Electrode 6a Needle-like Electrode Member 6b High-Voltage Insulating Part 6c Tip 8 Plate-like Electrode 9 Ground-side Needle-like Electrode 9a Needle-like Electrode Member 9b High-Voltage Insulating Part 9c Tip DESCRIPTION OF SYMBOLS 10 Ground side terminal 12 Ground 13 High voltage side terminal 14 Liquid 15 Projection electrode 15a Conductive projection member 15b High voltage insulation part 15c Tip part 16 Inflow pipe 18 Outflow pipe 20 AC power supply 21 High voltage pulse application means 21a Ground 22 DC Generator 23 Inverter 24 Pulse transformer 26 High voltage electric field 28 Vaporized bubble region 28a Vaporized bubble 30 Gas supply port 32 Gas supply pipe 34 Gas supply means 36 Liquid supply pump 38 Metal container 39 Liquid distribution pipe 41 Inflow pipe 42a First induction path 42b Second guiding path 43 Outflow pipe 44 Metal pipe 45a First needle electrode 45b Second 45c 3rd acicular electrode 48 Ground side connection point 50 Distributing means 54 Separation container 54a 1st partition 54b 2nd partition 54c 3rd partition 54d 4th partition 54e 1st separation wall 54f 2nd separation wall 55 Separation liquid guide way 56a Negative electrode 56b Positive electrode 58 Ion seed liquid inflow pipe 59 Anion outflow port 59a Anion outflow pipe 60a First separation tank 60b Second separation tank 60c Third separation tank 61 Cation outflow pipe 61a Cation outflow pipe 62a First Cation separation tank 62b Second cation separation tank 64a First anion separation tank 64b Second anion separation tank 65a First separation liquid 65b Second separation liquid 65c Third separation liquid 68 DC power supply 120 Single-phase AC 103 Electromagnetic switching 122 Booster 113 High voltage terminal 106 Electrode 106
126 Potential difference 104 Trough (insulated container)
108 Plate-like body 107 Convex plate 107
110 Ground side terminal 114 Liquid to be treated Pgas Top end position Pe Tip position Δt Pulse width V ₊ Pulse positive voltage V _- Pulse negative voltage

Claims (12)

Immersing the electrode pair composed of at least one of insulation part and one or more protrusions formed electrodes to the liquid in the object to be decomposition products mixed state, a voltage pulse of repeatedly to the electrode pairs forming a liquid before Symbol electrodes near by applying continuously or intermittently boiled vaporized, without vaporization bubble region gas supply to at least surrounding the projecting tip of the front Symbol electrodes by vapor Kaawa with Joule heating It is, before Symbol electrostatic ionizing the vaporized material of the gas-generating bubbles by pressure pulses by insulation breakdown discharge of the vaporization bubble (plasma) to form a variety of ions, in the liquid the ionic species in the plasma wherein a liquid to be treated purification method according liquid plasma purifying degradation and / or sterilized by the object to be decomposed product, before Symbol electrodes is insulated portion by an active ionic species stored in the liquid by permeate and diffuse into Between the electrode pair Interval is 3 mm to 50 mm, the potential difference of the previous SL voltage pulses is the 1kV~50kV or -1kV~-50kV, frequency is 1 kHz to 100 kHz, a liquid, wherein the pulse width is 1μs~20μs Medium plasma type treatment liquid purification method. The in- liquid plasma type treatment liquid purification method according to claim 1 , wherein an ionic species in the in- liquid plasma is excessively permeated and diffused in the liquid to make the liquid an active ionic species liquid. The in-liquid plasma type according to claim 1 or 2 , wherein the liquid is a liquid in a mixed state of two or more types, and a chemical reaction between the liquids in the mixed state is promoted by active ion species accumulated in the liquid. Processed liquid purification method. The liquid is potable water or its raw water, and the ionic species in the plasma in the liquid are H ⁺ and OH ⁻ , or these ionic species and an additional ionic species by ionization of an auxiliary gas supplied, and these liquid plasma type according to claim 1 for purifying the decomposition and / or the drinking water disinfection with or the raw water to be degradation products contained in the drinking water or the raw water by excessively permeate and diffuse the ion species Processed liquid purification method. The object to be decomposed product sewage liquid in the mixed state, liquid plasma type liquid to be treated purifying method according to claim 1 which is waste or sewage. The in-liquid plasma-type to-be-treated liquid purification method according to claim 1 , wherein the substance to be decomposed is a dye, and the dye is decomposed and decolorized. A vessel for distribution or holding the liquid, and one or more electrode pairs disposed in a liquid, and voltage application means for applying a continuous voltage pulse to the electrode pair, treated containing the degradation product is composed of at least from the treatment liquid supply means for supplying a liquid, at least one electrode of the electrode pair has one or more protrusions disruption edge of barbs Repetitive between the electrode pair by said voltage applying means It is continuously or intermittently boiled vaporized, vaporization bubble region which at least surrounds the projecting tip of the front Symbol electrodes by vapor Kaawa together by applying a voltage pulse to Joule heating liquid near electrodes of the electrode formed without gas supply, before Symbol electrostatic ionizing the vaporized material of the gas-generating bubbles by pressure pulses by dielectric breakdown discharge of the vaporization bubble (plasma) to form a variety of ions, the ion species in the plasma The osmotic diffusion in the liquid A submerged plasma generation type treatment liquid purification device for reforming and / or removing the substance to be decomposed, wherein the ionic species has one or more functions of decomposition, sterilization and decolorization of the substance to be decomposed a needle electrode before Symbol electrodes has a insulation portion, the distance between electrode pairs is 3 mm to 50 mm, the voltage potential difference is 1kV~50kV by applying means or -1kV~-50kV, frequency 1kHz to 100kHz, liquid plasma pulse-width, characterized in that the pre-Symbol voltage pulses 1μs~20μs is applied the liquid to be treated purifier. The in-liquid plasma type treatment according to claim 7 , wherein the liquid is a liquid in a mixed state of two or more types, and promotes a chemical reaction between the liquids in the mixed state by active ion species accumulated in the liquid. Liquid purification device. The needle electrode is disposed so as to project into the liquid inside the container, and the ground electrode constituting the other of the electrode pair is a conductive container or a conductive pipe constituting a part or all of the container. liquid plasma type liquid to be treated purifying apparatus according to 7. The needle electrode is disposed so as to protrude into the liquid inside the container, and the ground electrode constituting the other of the electrode pair is a plate electrode disposed in the container or the needle electrode disposed oppositely. The in-liquid plasma type treatment liquid purification apparatus according to claim 7 , wherein the plate-like electrode or the needle-like electrode is disposed in contact with the liquid. The in-liquid plasma type to-be-processed liquid purification apparatus in any one of Claims 7-10 in which the said electrode pair is arranged in multiple numbers along the distribution direction of the said liquid in the said container. The in-liquid plasma type treatment liquid purification apparatus according to any one of claims 7 to 11 , wherein the treatment liquid is potable water, its raw water, sewage, waste liquid, or sewage.

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