Active oxygen generation device

Abstract

The purpose of the present invention is to provide an active oxygen generation device capable of easily generating a large amount of active oxygen even when a distance between an active oxygen discharge outlet and an object (wastewater, organic matter, or the like) on which active oxygen acts is long. The present invention is an active oxygen generation device comprising: an electron emission type negative ion generation unit that emits electrons to a first gas flowing in from a first gas inlet, causing an ionized gas to flow out from an ionized gas outlet; a magnetic field flow passage for applying a magnetic field to the ionized gas flowing out from the ionized gas outlet of the electron emission type negative ion generation unit; an active oxygen discharge outlet from which active oxygen flows out to an outlet of the magnetic field flow passage; an extension flow passage connected to the active oxygen discharge outlet; and a second gas inlet from which a second gas flows in between the ionized gas outlet and an inlet of the magnetic field flow passage or between the outlet of the magnetic field flow passage and the active oxygen discharge outlet. The active oxygen generation device is characterized in that the first gas contains oxygen molecules, the second gas contains ozone molecules, and the extension flow passage is an organic matter lining metal pipe.

Description

Active oxygen generator

[0001] The present invention relates to an active oxygen generator, a method for producing active oxygen, a method for purifying wastewater, and a method for decomposing and treating organic matter.

[0002] Patent Document 1 discloses an active oxygen generator having: "an electron emission type negative ion generating unit for emitting electrons to a first gas flowing in through a first gas inlet to cause an ionized gas to flow out; a high magnetic field chamber for applying a magnetic field to the ionized gas flowing out from the electron emission type negative ion generating unit or to a mixed gas of the ionized gas and a second gas; an outlet for causing the ionized gas or active oxygen to flow out from the high magnetic field chamber; a second gas inlet for causing the second gas to flow between the electron emission type negative ion generating unit and the high magnetic field chamber or between the outlet of the high magnetic field chamber and the active oxygen outlet; and an active oxygen outlet connected to the outlet of the high magnetic field chamber; wherein the first gas contains oxygen molecules and the second gas contains ozone molecules."

[0003] Japanese Patent Application Laid-Open No. 2020-195965

[0004] When the distance between the active oxygen outlet and the object to be acted on by active oxygen (such as wastewater or organic matter) is long, conventional devices have a problem of insufficient generation of active oxygen. The object of the present invention is to provide an active oxygen generator that can easily generate a large amount of active oxygen even when the distance between the active oxygen outlet and the object to be acted on by active oxygen (such as wastewater or organic matter) is long.

[0005] The active oxygen generator of the present invention is characterized by comprising: an electron emission type negative ion generating unit for emitting electrons to a first gas flowing in from a first gas inlet and discharging the ionized gas from an ionized gas outlet; a magnetic field flow path for applying a magnetic field to the ionized gas flowing out from the ionized gas outlet of the electron emission type negative ion generating unit; an active oxygen outlet for discharging active oxygen to the outlet of the magnetic field flow path; an extension flow path connected to the active oxygen outlet; and a second gas inlet for flowing a second gas between the ionized gas outlet and the inlet of the magnetic field flow path or between the outlet of the magnetic field flow path and the active oxygen outlet, wherein the first gas contains oxygen molecules and the second gas contains ozone molecules, and the extension flow path is a metal pipe lined with an organic substance.

[0006] The feature of the method for producing active oxygen of the present invention is that the active oxygen is generated by contacting an ionized gas with a second gas containing ozone molecules using the above-mentioned active oxygen generating device.

[0007] The wastewater purification method of the present invention is characterized in that it uses the above-mentioned active oxygen generator to generate active oxygen by contacting an ionized gas with a second gas containing ozone molecules, and then purifies the wastewater by contacting this active oxygen with the wastewater.

[0008] The feature of the method for decomposing organic matter of the present invention is that the active oxygen generator is used to generate active oxygen by bringing an ionized gas into contact with a second gas containing ozone molecules, and then the active oxygen is brought into contact with organic matter to oxidatively decompose the organic matter.

[0009] The active oxygen generator of the present invention can easily generate a large amount of active oxygen even when the distance between the active oxygen outlet and the target body (air, organic matter, etc.) on which the active oxygen acts is long.

[0010] According to the wastewater purification method of the present invention, the active oxygen generator described above is used, so that a large amount of active oxygen can be generated, and the wastewater purification capacity is high.

[0011] According to the method for treating organic matter of the present invention, the active oxygen generator described above is used, so that a large amount of active oxygen can be generated, and the ability to treat organic matter by oxidation and decomposition is high.

[0012] 1 is a conceptual diagram showing a schematic diagram of an active oxygen generator (1) configured in Example 1. FIG.

[0013] The electron emission type negative ion generating unit has a built-in cathode needle for applying high voltage, a first gas inlet for introducing the first gas, and an ion gas outlet for discharging the ionized gas. The electron emission type negative ion generating unit does not utilize the corona discharge phenomenon, but generates ionized gas by emitting electrons from a needle-shaped cathode needle into the first gas, and is similar to known electron emission type negative ion generating units (Japanese Patent Laid-Open Nos. 7-153549, 10-162932, 10-199654, 10-199655, 10-199656, 10-199657, 10-199658, 10-199659 ... Those disclosed in JP-A-10-325560, JP-A-2001-338743, JP-A-2001-56395, JP-A-2002-110312, JP-A-2002-319470, JP-A-2003-17218, JP-A-2005-5049, etc.; the disclosures of these publications are incorporated herein by reference.) and the like can be used.

[0014] Among known electron emission type negative ion generating units, those using an iron core type transformer are prone to generating electromagnetic waves (i.e., electric and magnetic fields), so those using a piezoelectric transformer are preferred. Examples of commercially available units include the negative ion generating unit MION (Nissin Electric Co., Ltd.), negative ion generating units ITM-F201 and ITM-F301 (Andes Electric Co., Ltd.), and negative ion generators ION001-3 / 12 / 24 / 100 and ION002-100 (Chuen Electronics Co., Ltd.).

[0015] The first gas inlet may be configured to allow the inflow of a gas containing oxygen molecules (oxygen gas, air, etc.), but the inlet may also be connected to the exhaust port of an oxygen concentrator that draws in air and exhausts a first gas containing a high concentration of oxygen.

[0016] The oxygen concentrator can be either an adsorption type (PSA: Pressure Swing Adsorption) that uses special zeolite and repeatedly pressurizes and depressurizes to separate oxygen gas from nitrogen gas, or an oxygen enrichment membrane type that uses an oxygen enrichment membrane that allows more oxygen gas to permeate than nitrogen gas to concentrate oxygen gas, but the adsorption type (PSA) is preferred.

[0017] The ion density of the ionized gas flowing out from the ionized gas outlet is 1×10 ３ ~1 x 10 ８ Preferably, the concentration is about 1.5 × 10 ３ ~2 x 10 ７ The ion density is measured in accordance with JIS B9929:2006 "Method for measuring ion density in air" (parallel plate ion density meter; the disclosure of this JIS is incorporated herein by reference).

[0018] The magnetic field flow path contains a built-in magnetic field that can apply a magnetic field to the ionized gas flowing out from the electron emission type negative ion generating unit or the mixture of the ionized gas and the second gas, and has an inlet for receiving the ionized gas flowing out from the electron emission type negative ion generating unit or the mixture of the ionized gas and the second gas, and an outlet for discharging the ionized gas or active oxygen.

[0019] The magnetic field flow path preferably has a south or north pole at the inlet side and the opposite pole at the outlet side. The magnetic field may be generated by either a permanent magnet or a magnetic field generated by passing a constant current through an electromagnetic coil.

[0020] In the magnetic field generated by a permanent magnet, the permanent magnet may be a hard ferrite magnet, a neodymium magnet, an alnico magnet, a samarium-cobalt magnet, or the like, but from the viewpoint of magnetic field strength, at least one magnet selected from the group consisting of a neodymium magnet (up to about 80°C), an alnico magnet, and a samarium-cobalt magnet is preferred (more preferably a neodymium magnet), and from the viewpoint of magnetic field strength and heat resistance, at least one magnet selected from the group consisting of an alnico magnet (up to about 450°C) and a samarium-cobalt magnet (up to about 200°C) is preferred. Such a magnetic field flow path may be formed by drilling a hole in a permanent magnet (for example, a cylindrical permanent magnet), or by using a hollow permanent magnet (for example, a hollow cylindrical permanent magnet) as is, or by stacking ring-shaped or doughnut-shaped permanent magnets to form the magnetic field flow path.

[0021] In the magnetic field generated by passing a constant current through an electromagnetic coil, an electromagnet formed of an iron core and a coil, and a solenoid coil (air-core coil) can be used. However, from the viewpoint of the electric field generated by the electromagnetic coil (which affects the amount of active oxygen generated) and power consumption, a permanent magnet is preferable. A solenoid coil is not preferred because it consumes a lot of power and has a strong electric field but a weak magnetic field.

[0022] The magnetic flux density near the outlet of the magnetic field flow path is preferably about 100 to 700 mT, and more preferably about 200 to 600 mT.

[0023] The magnetic field flow path may be protected by a protective film (such as a protective tube or a protective coating), and is preferably protected by a fluororesin. Examples of the fluororesin include tetrafluoroethylene polymer (PTFE), tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene / hexafluoropropylene copolymer (FEP), tetrafluoroethylene / ethylene copolymer (ETFE), vinylidene fluoride polymer (PVDF), trifluorochloroethylene polymer (PCTFE), trifluorochloroethylene / ethylene copolymer (ECTFE), tetrafluoroethylene / perfluorodioxole copolymer (TFE / PDD), and vinyl fluoride polymer (PVF).

[0024] An active oxygen outlet is provided at the outlet of the magnetic field flow path for discharging active oxygen. The extension flow path connected to this active oxygen outlet is intended to easily generate a large amount of active oxygen even when the distance between the active oxygen outlet and the target body (air, organic matter, etc.) on which the active oxygen acts is long. In other words, the shorter the distance, the less the active oxygen is deactivated, while the longer the distance, the more active oxygen is deactivated. However, this extension flow path reduces this deactivation.

[0025] It was found that the material of the extension flow path affects the deactivation of active oxygen, and after examining various materials, it was found that when an organic-lined metal pipe was used as the extension flow path, the deactivation of active oxygen was minimal and a large amount of active oxygen could be easily generated. In particular, when the length of the extension flow path exceeds 1 m, the influence of the material of the extension flow path becomes significant.

[0026] There are no restrictions on organic-lined metal pipes, as long as the inner wall of the metal pipe is lined (or coated) with an organic material. Examples of organic materials include fluororesin (such as those mentioned above), vinyl chloride resin, alkylene resin (such as ethylene resin, propylene resin, and ethylene-propylene copolymer), silicone resin, silicone oil, and epoxy resin.

[0027] Examples of materials for the metal pipe include iron, stainless steel (SUS304, SUS3016, etc.), copper, and aluminum.

[0028] The length (m) of the extension flow path is preferably about 0.01 to 50, more preferably about 1 to 30, and particularly preferably about 1.5 to 20. Within this range, a large amount of active oxygen can be generated more easily.

[0029] The larger the inner diameter of the extension flow path, the better from the viewpoint of deactivating active oxygen. However, from the viewpoint of practicality, the inner diameter (mm) of the extension flow path is preferably about 5 to 50, more preferably about 8 to 30, and particularly preferably about 10 to 25.

[0030] The extension flow path is preferably straight, but if the extension flow path is curved, the radius of the curve (cm) is preferably about 5 to 100, and more preferably about 10 to 50. Within this range, a large amount of active oxygen can be generated more easily.

[0031] A second gas inlet for introducing a second gas is provided between the ionized gas outlet and the inlet of the magnetic field flow path or between the outlet of the magnetic field flow path and the active oxygen outlet. That is, when the second gas inlet is provided between the ionized gas outlet and the inlet of the magnetic field flow path, a magnetic field is applied within the magnetic field flow path to a mixture of the ionized gas and the second gas flowing out of the ionized gas outlet, and active oxygen is discharged from the outlet of the magnetic field flow path. On the other hand, when the second gas inlet is provided between the outlet of the magnetic field flow path and the active oxygen outlet, a magnetic field is applied within the magnetic field flow path only to the ionized gas flowing out of the ionized gas outlet, and the ionized gas flows out from the outlet of the magnetic field flow path, mixes with the second gas, and active oxygen is discharged from the active oxygen outlet. Of these, it is preferable that the second gas inlet be provided between the ionized gas outlet and the magnetic field flow path.

[0032] The second gas inlet for introducing the second gas may be any gas containing ozone molecules (a mixed gas of ozone gas with nitrogen gas, helium gas, argon gas, oxygen gas and / or carbon dioxide gas (ozone concentration of about 5 vol%), etc.), but it is preferable that the inlet be connected to the exhaust port of an ozone generator that takes in air and exhausts the second gas containing ozone.

[0033] The ozone concentration of the second gas is 3 to 105 g / m ３ The ozone concentration is preferably about (N). The ozone concentration is measured by an ultraviolet absorption method.

[0034] The active oxygen that can be discharged from the active oxygen generator of the present invention includes superoxide anion (.O ２ － ), ozonide ion (ozonide ion, .O ３ － In addition to ozone and hydroxyl radicals (.OH), the ionized gas flowing out from the ionized gas outlet contains superoxide anions (.O２ － ), which reacts with ozone to form ozonide ions (ozonide ions, .O ３ － ) is generated. Then, this ozonide ion (.O ３ － A portion of the reactive oxygen species reacts with the moisture contained in the first gas and the second gas to generate hydroxyl radicals (.OH). The stability (lifespan) of each reactive oxygen species is thought to be inversely proportional to its oxidizing power, and the oxidizing power of the hydroxyl radical (.OH) is said to be very high, but very low in stability. In other words, the lifespan of the hydroxyl radical (.OH) is very short, and the reactive oxygen species discharged from the reactive oxygen generator of the present invention are superoxide anions (.O ２ － ) and ozonide ion (ozonide ion, .O ３ － The ratio of these two gases can be adjusted by adjusting the ratio of oxygen molecules in the first gas and ozone molecules in the second gas. The chemical reaction formula is as follows:

[0035] O ２ + e = .O ２ － ・O ２ － + O ３ = O ２ + O ３ － ・O ３ － + H ２ O = OH + O ２ + OH －

[0036] The volume ratio (q1 / q2) of the flow rate of the first gas (q1) to the flow rate of the second gas (q2) is ２ － ) and ozonide ion (ozonide ion, .O ３ － The ratio is determined appropriately depending on the concentration of the oxygen atoms, the ion density, the ozone concentration, etc., but is preferably about 2 / 2 to 16 / 2.

[0037] The active oxygen generator of the present invention can easily generate a large amount of active oxygen even when the distance between the active oxygen outlet and the target body (air, organic matter, etc.) on which the active oxygen acts is long, so there is no restriction on the installation location (i.e., installation location) of the active oxygen generator of the present invention.

[0038] The active oxygen generator of the present invention can be suitably applied to a method for producing active oxygen, a method for purifying wastewater, a method for decomposing organic matter, and the like.

[0039] In the method for producing active oxygen, the method for purifying wastewater, and the method for decomposing and treating organic matter, the active oxygen can be produced by contacting an ionized gas produced by radiating electrons to a first gas containing oxygen molecules with a second gas containing ozone using the active oxygen generator. Then, the active oxygen is brought into contact with wastewater to purify the wastewater, or the active oxygen is brought into contact with organic matter to oxidize and decompose the organic matter. Then, the water contained in the wastewater or organic matter is oxidized with ozonide ions (ozonide ions, .O ３ － ) reacts with the hydroxyl radical (.OH) which has a very high oxidizing power, and therefore exhibits excellent wastewater purification capabilities and excellent oxidative decomposition capabilities for organic matter.

[0040] There are no restrictions on the wastewater, such as domestic wastewater and industrial wastewater, but since wastewater containing only easily decomposable organic matter can be treated by ozone or biochemical wastewater treatment, the wastewater purification method of the present invention is suitable for purifying wastewater containing hardly decomposable organic matter that cannot be treated by ozone or biochemical wastewater treatment.

[0041] Organic matter includes felled vegetation and aquatic plants, flora and fauna such as fish and animals, waste such as food residues (rice husks, leftover food, etc.), organic-metal composites (electric wires, home appliances, personal computers, etc.), and other organic matter containing water. These organic matters are usually disposed of by incineration after drying or while still wet, but the organic matter decomposition method of the present invention allows for easy oxidative decomposition in an energy-saving manner. By adjusting the contact time between active oxygen and the organic matter and stopping the oxidative decomposition process, dry fuel, dry fertilizer, etc. can be obtained without complete decomposition (to water, carbon dioxide, and inorganic residues).

[0042] Example 1 A negative ion generating unit MION (Nissin Electric Co., Ltd., applied voltage -9000V, has a first gas inlet and an ionized gas outlet) was used as the electron emission type negative ion generating unit, and as the magnetic field flow path, two ring-shaped neodymium magnets (inner diameter 25 mm, outer diameter 35 mm, thickness 9 mm, nickel plating thickness 12 μm) and two ring-shaped neodymium magnets (inner diameter 25 mm, outer diameter 35 mm, thickness 13 mm, nickel plating thickness 12 μm) were stacked together, and a fluororesin straight tube (polytetrafluoroethylene, length 44 mm) was placed inside them. The active oxygen generator (1) of the present invention was constructed by using a magnetic field flow path having an internal magnetic pole (south pole on the inlet side and north pole on the outlet side) with the ionized gas outlet and the inlet of the magnetic field flow path connected, a second gas inlet for allowing the second gas to flow in was provided between the ionized gas outlet and the inlet of the magnetic field flow path, the exhaust port of an oxygen gas cylinder was connected to the first gas inlet, the exhaust port of an ozone generator (PSA ozonizer SGA-01-PSA2, Sumitomo Precision Products Co., Ltd.) was connected to the second gas inlet, and an extension flow path (1; a 1 m long, 13 mm inner diameter iron straight pipe coated with SLICONE LUBE SPRAY (Kure Industries Co., Ltd., silicone oil spray) and dried) was connected to the outlet of the magnetic field flow path (active oxygen outlet).

[0043] The first gas (oxygen gas cylinder) was supplied at 2 L / min and the second gas at 2 L / min, and the active oxygen flowing out of the extension flow channel (1) was measured with a parallel plate ion density measuring device (ion counter NKMH-103, Hokuto Electronics Industry Co., Ltd.). The ion density was 500,000 / ml. Furthermore, when the extension flow channel (1) was removed and the active oxygen flowing out of the active oxygen outlet was similarly measured, the ion density was 4,000,000 / ml. Furthermore, the active oxygen flowing out of the extension flow channel (1) was bubbled into 1,000 mL of a 0.1 mol / L potassium iodide aqueous solution (a colorless, transparent liquid), and the time it took for the aqueous solution to turn into a reddish-brown, transparent liquid was measured. The time was 45 seconds (average value of three measurements).

[0044] If certain radical species (.X) are present in the bubbled active oxygen, the radical species and iodide ions (I － ) reacts with triiodide ion (I ３ －) is generated (represented by the following formula), and triiodide ions (I ３ － Depending on the concentration of radicals (proportional to the concentration of radical species), the aqueous solution changes from a yellow transparent liquid to a brown to reddish brown transparent liquid (a detection method called the Weissler method). － +・X=X － + I I + I － = I ２ － 2.I ２ － =I ２ +2I － I ２ － +I － =I ３ －

[0045] On the other hand, when measurements were taken in the same manner as above except that the first gas (oxygen gas cylinder) was not supplied, the time it took for the aqueous solution to become a reddish-brown, transparent liquid was 75 seconds (average value of three measurements).Furthermore, when measurements were taken in the same manner as above except that the second gas was not supplied, the aqueous solution did not become a reddish-brown, transparent liquid even after 630 seconds had passed (light yellow, transparent liquid, average value of three measurements).

[0046] Example 2 An active oxygen generator (2) of the present invention was constructed in the same manner as in Example 1, except that the "extension flow path (1)" was changed to an "extension flow path (2; a stainless steel straight pipe having a length of 1 m and an inner diameter of 12 mm, coated with DRY FASTLUBE (a fluororesin spray made from PTFE, petroleum-based solvents, etc., manufactured by Kure Industries Co., Ltd., "FASTLUBE" is a registered trademark of the company in Japan) and then dried."

[0047] The first gas (oxygen gas cylinder) was supplied at 2 L / min and the second gas at 2 L / min, and the active oxygen flowing out of the extension flow channel (2) was measured with a parallel plate ion density measuring device (ion counter NKMH-103, Hokuto Electronics Industry Co., Ltd.). The ion density was 3.5 million / ml. Furthermore, when the extension flow channel (2) was removed and the active oxygen flowing out of the active oxygen outlet was similarly measured, the ion density was 4 million / ml. Furthermore, the active oxygen flowing out of the extension flow channel (2) was bubbled into 1000 mL of a 0.1 mol / L potassium iodide aqueous solution (a colorless, transparent liquid). The time it took for the aqueous solution to turn into a reddish-brown, transparent liquid was measured, and it was 20 seconds (average value of three measurements).

[0048] On the other hand, when measurements were taken in the same manner as above except that the first gas (oxygen gas cylinder) was not supplied, the time it took for the aqueous solution to become a reddish-brown, transparent liquid was 70 seconds (average value of three measurements).Furthermore, when measurements were taken in the same manner as above except that the second gas was not supplied, the aqueous solution did not become a reddish-brown, transparent liquid even after 700 seconds had passed (light yellow, transparent liquid, average value of three measurements).

[0049] Example 3 An active oxygen generator (3) of the present invention was constructed in the same manner as in Example 1, except that the "extension flow path (1)" was changed to an "extension flow path (3; a straight pipe for water supply, hard polyvinyl chloride-lined steel pipe with a length of 1 m and an inner diameter of 16 mm)."

[0050] The first gas (oxygen gas cylinder) was supplied at 2 L / min and the second gas at 2 L / min, and the active oxygen flowing out of the extension flow channel (3) was measured with a parallel plate ion density measuring device (ion counter NKMH-103, Hokuto Electronics Industry Co., Ltd.), resulting in an ion density of 10,000 particles / ml. Furthermore, when the extension flow channel (3) was removed and the active oxygen flowing out of the active oxygen outlet was similarly measured, the result was 4,000,000 particles / ml. Furthermore, the active oxygen flowing out of the extension flow channel (3) was bubbled into 1,000 mL of a 0.1 mol / L potassium iodide aqueous solution (a colorless, transparent liquid), and the time it took for the aqueous solution to turn into a reddish-brown, transparent liquid was measured, resulting in 100 seconds (average value of three measurements).

[0051] On the other hand, when measurements were taken in the same manner as above except that the first gas (oxygen gas cylinder) was not supplied, the time it took for the aqueous solution to become a reddish-brown, transparent liquid was 150 seconds (average value of three measurements).Furthermore, when measurements were taken in the same manner as above except that the second gas was not supplied, the aqueous solution did not become a reddish-brown, transparent liquid even after 650 seconds had elapsed (light yellow, transparent liquid, average value of three measurements).

[0052] <Comparative Example> An active oxygen generator (H) for comparison was constructed in the same manner as in Example 1, except that the "extension flow path (1)" was changed to an "extension flow path (4, a hard vinyl chloride straight pipe having a length of 1 m and an inner diameter of 13 mm)."

[0053] The first gas (oxygen gas cylinder) was supplied at 2 L / min and the second gas at 2 L / min, and the active oxygen flowing out of the extension flow channel (4) was measured with a parallel plate ion density measuring device (ion counter NKMH-103, Hokuto Electronics Industry Co., Ltd.). The ion density was 5,000 / ml. Furthermore, when the extension flow channel (4) was removed and the active oxygen flowing out of the active oxygen outlet was similarly measured, the ion density was 4,000,000 / ml. Furthermore, the active oxygen flowing out of the extension flow channel (4) was bubbled into 1,000 mL of a 0.1 mol / L potassium iodide aqueous solution (a colorless, transparent liquid). The time it took for the aqueous solution to turn into a reddish-brown, transparent liquid was measured, and it was 100 seconds (average value of three measurements).

[0054] On the other hand, when measurements were taken in the same manner as above except that the first gas (oxygen gas cylinder) was not supplied, the time it took for the aqueous solution to become a reddish-brown, transparent liquid was 120 seconds (average value of three measurements).Furthermore, when measurements were taken in the same manner as above except that the second gas was not supplied, the aqueous solution did not become a reddish-brown, transparent liquid even after 650 seconds had elapsed (light yellow, transparent liquid, average value of three measurements).

[0055] As described above, the active oxygen generator of the present invention was confirmed to generate a larger amount of active oxygen than the comparative active oxygen generator, even when the distance between the active oxygen outlet and the target body (air, organic matter, etc.) on which the active oxygen acts was long. Therefore, the active oxygen generator of the present invention can easily generate a large amount of active oxygen, and has high wastewater purification capacity and high oxidative decomposition capacity for organic matter.

[0056] 1 electron emission type negative ion generating unit 2 magnetic field flow path 3 first gas inlet 4 cathode needle 5 permanent magnet 6 active oxygen outlet 7 extension flow path 8 second gas inlet

Claims

1. An active oxygen generator comprising: an electron emission type negative ion generating unit for emitting electrons to a first gas flowing in from a first gas inlet and discharging the ionized gas from an ionized gas outlet; a magnetic field flow path for applying a magnetic field to the ionized gas flowing out from the ionized gas outlet of the electron emission type negative ion generating unit; an active oxygen outlet for discharging active oxygen to the outlet of the magnetic field flow path; an extension flow path connected to the active oxygen outlet; and a second gas inlet for flowing a second gas between the ionized gas outlet and the inlet of the magnetic field flow path or between the outlet of the magnetic field flow path and the active oxygen outlet, wherein the first gas contains oxygen molecules and the second gas contains ozone molecules, and the extension flow path is a metal tube lined with an organic material.

2. The active oxygen generator according to claim 1, wherein the exhaust port of an oxygen concentrator that takes in air and exhausts a first gas containing highly concentrated oxygen is connected to the first gas inlet.

3. The active oxygen generator according to claim 1, wherein the exhaust port of an ozone generator that takes in air and exhausts a second gas containing ozone is connected to the second gas inlet.

4. The active oxygen generating device according to claim 1, wherein the magnetic field is generated by a permanent magnet or by passing a constant current through an electromagnetic coil.

5. The active oxygen generator according to claim 1, wherein the inlet side of the magnetic field flow path is a south pole or a north pole, and the outlet side of the magnetic field flow path is the opposite pole.

6. The active oxygen generator according to claim 1, wherein the magnetic field is generated by a permanent magnet, and the permanent magnet is at least one type selected from the group consisting of neodymium magnets, alnico magnets and samarium-cobalt magnets.

7. A method for producing active oxygen, characterized in that active oxygen is generated by contacting an ionized gas with a second gas containing ozone molecules using the active oxygen generator described in any one of claims 1 to 6.

8. A method for purifying wastewater, comprising using the active oxygen generator described in any one of claims 1 to 6 to generate active oxygen by contacting an ionized gas with a second gas containing ozone molecules, and then contacting this active oxygen with wastewater to purify the wastewater.

9. A method for decomposing organic matter, comprising using an active oxygen generator according to any one of claims 1 to 6 to generate active oxygen by contacting an ionized gas with a second gas containing ozone molecules, and then contacting this active oxygen with organic matter to oxidize and decompose the organic matter.

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