JP2000279952A - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purifier capable of purifying organic compounds contained in the water to be treated without depending on an oxygen quantity in the water to be treated by efficiently incorporating oxygen into water to be treated and allowing ozone and hydroxy radicals to generate. SOLUTION: The water purifier is provided with an irradiation part for irradiating the water to be treated containing dissolved organic matters with ultraviolet rays generated by excimer laser, and an oxygen feed part for feeding the oxygen. Ultraviolet ray reacts on oxygen to accelerate the generation of ozone and hydroxy radicals, and generation of ozone and hydroxy radicals is enhanced, thus oxidation decomposition of the organic compounds is efficiently performed by the water purifier.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an efficient method for decomposing organic substances using an excimer lamp which emits ultraviolet light.

[0002]

2. Description of the Related Art Household water purifiers, bathtubs with a purifying function, purifying tanks and purification facilities for purifying household wastewater, wastewater treatment in factories, and water purification plants for supplying clean water are used in general households. The mainstream is to adsorb and remove organic substances in tap water by activated carbon adsorption and minerals, and to filter suspended substances and various bacteria. In the adsorption removal, after a certain period of time, the amount of the adsorbed substance exceeds the saturated amount with respect to the activated carbon, and the adsorbing ability is reduced. Also, if the filter medium is used for a long time, the filter medium is clogged, and the filtration ability is reduced. For this reason, it is necessary to replace or regenerate the adsorbent or the filter medium after a certain period of time, and it is very complicated especially in ordinary households, and it is difficult to thoroughly manage the adsorbent and the filter medium.

In order to eliminate the complexity, a purifying apparatus has been devised for decomposing and purifying organic compounds in water. Oxidative decomposition by ozone, which is applied in wastewater treatment at water purification plants and some factories that require high purification, is promising as one of them. Ozone is generated from oxygen by electrolysis or ultraviolet irradiation. Ozone acts on organic compounds to decompose and remove, in particular, coloring substances and off-flavor substances and sterilize them.

[0004] Techniques for directly decomposing organic compounds are also being studied. The covalent bond contained in the organic compound is absorbed by short-wavelength ultraviolet light, and easily becomes ionized or excited. Since organic compounds can be decomposed by short wavelengths, their use for purifying water is also being studied.

The method of decomposing organic substances by ultraviolet light requires a short wavelength at which irradiated ultraviolet rays can decompose organic substances efficiently. Therefore, excimer molecules are generated using a gas such as Xe or Ar and emitted from the excimer molecules. 20
It has been considered to apply ultraviolet light having a short wavelength of 0 nm or less.

For example, in Japanese Patent Application Laid-Open No. Hei 10-216716, an excimer lamp is installed in running water to emit liquid or vapor organic chlorine compounds from the excimer lamp at 172 nm.
Alternatively, it is decomposed by irradiating 222 nm ultraviolet light.

[0007] It is known that, while excimer light decomposes organic substances, the ultraviolet light to be irradiated accelerates the reaction of generating ozone from oxygen and oxidatively decomposes organic compounds by ozone. Especially in water, hydroxyl radicals generated by ultraviolet irradiation from water molecules and hydroxyl radicals generated in the decomposition process of ozone in water are:
It is a strong oxidizing agent along with ozone, and it has been considered to purify water containing organic compounds using oxidative decomposition by ozone and hydroxyl radicals.

For example, in JP-A-11-33542,
An irradiation unit is provided in a circulation water passage of a bathtub or a water tank to irradiate water with ultraviolet rays generated by excimer, thereby generating hydroxyl radicals to promote sterilization and oxidative decomposition of organic compounds for purification.

[0009]

However, in the conventional excimer lamp purifying apparatus, the organic compound passing through a place distant from the light source of the excimer lamp provided in the water passage is directly decomposed by the ultraviolet light, And oxidative decomposition by hydroxy radicals to decompose and purify, but oxidative decomposition depends on the amount of oxygen contained in the treated water, so in sewage where oxygen is consumed and the amount of oxygen is reduced There is a problem in that the amount of ozone and hydroxyl radicals is small, and the organic compound cannot sufficiently come into contact with ozone, so that oxidative decomposition may not be sufficiently performed. In addition, there is a problem that the efficiency of decomposition of the organic compound in the treated water is not stable due to the increase or decrease depending on the amount of oxygen contained in the treated water.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. It is an object of the present invention to efficiently include oxygen in treated water to generate ozone and hydroxyl radicals, and to efficiently process wastewater having a small amount of oxygen. Well decompose organic compounds,
It is an object of the present invention to provide a purification device that efficiently purifies organic compounds contained in treated water regardless of the amount of oxygen in treated water.

[0011]

Means for Solving the Problems In order to achieve the above object, a first aspect of the present invention is to provide an irradiation section for irradiating treated water containing an organic compound with ultraviolet light to the treated water, and irradiating the treated compound containing the organic compound with ultraviolet light. In a purification device that decomposes, an oxygen supply unit that supplies a substance containing oxygen is provided, and ultraviolet light from the excimer is irradiated from the irradiation unit, and the ultraviolet light acts on oxygen to generate ozone and hydroxyl radicals, thereby oxidizing organic compounds. It was decomposed. As a result, the organic compounds contained in the treated water can be decomposed by ozone and hydroxyl radicals,
It is possible to provide a purification device that can efficiently decompose organic compounds regardless of the amount of oxygen contained in the treated water.

According to a second aspect of the present invention, in the purifying apparatus of the first aspect, the oxygen supply unit is an oxygen generator for generating a substance containing oxygen. Therefore, oxygen contained in the treated water is converted into ozone and hydroxyl radicals in tap water. The generated purification device was used. This makes it possible to provide a purification device that can efficiently decompose organic compounds regardless of the amount of oxygen contained in the treated water.

According to a third aspect of the present invention, in the purifying apparatus of the first aspect, since the oxygen supply section is a bubble generating apparatus for inhaling a substance containing oxygen, a gas containing oxygen can be easily supplied from the outside. . This makes it possible to provide a purification device that can efficiently decompose organic compounds regardless of the amount of oxygen contained in the treated water.

According to a fourth aspect of the present invention, in the purifying apparatus according to the second aspect, the oxygen generator is generated by electrolysis, so that oxygen can be supplied from water, and a compound for generating oxygen from outside is added. A purification device that does not need to be used. This makes it possible to provide a purification device that can efficiently decompose organic compounds regardless of the amount of oxygen contained in the treated water.

According to a fifth aspect of the present invention, in the purification device of the first aspect, an activated carbon adsorption tank or a filtration device is provided separated from the irradiation unit. Organic compounds can be adsorbed or removed, and when disposed before the irradiation section, a large amount of organic compound is prevented from flowing into the irradiation section, and purification is not affected by ultraviolet light from the irradiation section. The device. This makes it possible to provide a purification device that efficiently decomposes organic compounds regardless of the amount of oxygen contained in the treated water and that purifies the treated water to a high degree.

According to a sixth aspect of the present invention, in the purifying apparatus according to the fifth aspect, water containing ozone or hydroxyl radicals generated from the irradiation unit during cleaning is caused to flow into the activated carbon adsorption tank or the filtration device. And a purifying device capable of washing organic compounds attached to the filtering device in the same device. As a result, the organic compound can be efficiently decomposed regardless of the amount of oxygen contained in the treated water, and the purified water can be highly purified without exchanging the activated carbon adsorption tank and the filtering device for a long time. A device can be provided.

According to a seventh aspect of the present invention, in the purifying apparatus of the first aspect, an ion exchange resin is provided separated from the irradiation section, so that not only decomposition and removal of organic compounds but also calcium ions, magnesium ions, and other heavy metal ions can be performed. A purifying device that can be removed was used. This makes it possible to provide a purification device that efficiently decomposes organic compounds regardless of the amount of oxygen contained in the treated water and removes metal ions to purify the treated water to a high degree.

According to the eighth aspect of the present invention, in the purifying apparatus according to the seventh aspect, since the ion exchange resin is provided at a stage preceding the irradiation unit, a hardness component flowing into the irradiation unit is removed, so that the inside of the irradiation unit is removed. A purification device capable of preventing scale adhesion due to interaction with organic compounds. Thereby, while efficiently decomposing the organic compound regardless of the amount of oxygen contained in the treated water, removing the metal ions to purify the treated water to a high degree, and preventing the scale from adhering, the irradiation unit is used. It is possible to provide a purifying device that maintains the decomposition performance of the catalyst.

According to a ninth aspect of the present invention, there is provided a purification apparatus for irradiating treated water containing an organic compound with ultraviolet light to irradiate the treated water with ultraviolet light by excimer to decompose the organic compound.
Since an organic compound is oxidatively decomposed by providing an active molecule supply unit for supplying a substance containing a hydroxyl radical, both organic compound decomposition and oxidative decomposition by ultraviolet light can be performed, and a purification device with high decomposition efficiency is provided. You can do it.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. The contents of the present invention will be described below with reference to examples for easier understanding.

[0021]

FIG. 1 is a conceptual diagram for explaining an embodiment of the purifying apparatus according to claim 1 of the present invention. The purification device includes an oxygen supply unit 10 and an irradiation unit 12. The oxygen supply unit 10 supplies oxygen by generating, inhaling, and mixing oxygen in the treated water, and includes an oxygen inhaling unit 36 or an oxygen generating unit 58. The irradiating section 12 has a device for emitting ultraviolet light by excimer.

The oxygen supplied into the treated water in the oxygen supply unit 10 moves to the irradiation unit 12 together with the organic compound, and the irradiation unit 12 is irradiated with ultraviolet light by excimer. The ultraviolet light from the excimer is, for example, 172 nm, which is a short wavelength of 250 nm or less that can cut most of the bonding forms of organic compounds. Oxygen irradiated at 172 nm reacts with another oxygen to generate ozone.

The ozone generated in the irradiation section 12 has a strong oxidizing power and acts on an organic compound contained in the treated water to promote an oxidation reaction. In addition, ozone absorbs ultraviolet light and causes photodecomposition, and by-produces active oxygen species such as hydroxy radicals and singlet oxygen, which also have oxidizing power similarly to ozone. It acts on organic compounds to cause oxidative decomposition.

At the same time as the oxidative decomposition by the active oxygen species such as ozone and hydroxyl radical, the organic compound is decomposed by the low wavelength ultraviolet light in the irradiation part. 17
At a low wavelength of 2 nm, it is possible to give sufficient energy to dissociate the bond mode such as CC bond, O—H bond, and C—H bond of the aliphatic organic compound, and to decompose the organic compound. Occurs. In the treated water supplied with oxygen, both the oxidative decomposition by the short-wavelength ultraviolet light and the direct decomposition act to enable efficient decomposition of organic compounds in the treated water.

The oxygen species to be supplied may include liquid oxygen and active oxygen in addition to molecular oxygen. The active oxygen is, for example, ozone or singlet oxygen, and is a substance having an oxidizing ability to oxidize an organic compound to the active oxygen itself. When a gas containing ozone is supplied, ozone can be photodecomposed by irradiation of ultraviolet light in the irradiation section, and the amount of generated hydroxyl radicals having oxidizing ability like ozone can be increased.

In FIG. 1, the oxygen supply unit 10 is arranged in front of the irradiation unit 12, but as shown in the conceptual diagram of FIG. 2, the oxygen supply unit 10 is arranged so as to be isolated from the flow path. You may. In this case, the supply of oxygen and the irradiation of ultraviolet light are performed simultaneously.

An embodiment of the present invention will be described with reference to FIG. An oxygen source tank 30 for storing an oxygen source is provided, and an inlet 38 that can be supplied from outside is provided.
A certain amount of the oxygen source is introduced into the oxygen generating means 36 through the pump 32. When the oxygen source is mixed into the treated water, a chemical reaction is caused by the oxygen generating means 36 to generate oxygen.

When hydrogen peroxide is used as the oxygen source stored in the oxygen source tank 30, the oxygen generating means 3
In step 6, a catalyst for decomposing hydrogen peroxide into water and oxygen is provided, and the hydrogen peroxide is brought into contact. As the catalyst, for example, platinum, manganese oxide, catalase, or the like is used.

If oxygen is generated by utilizing the electrolysis of water as described in claim 4, it becomes possible to supply an oxygen source from the treated water, and the oxygen source shown in FIG. The oxygen source tank 30 becomes unnecessary, and the space is saved. FIG. 4 shows an electrolyzer as an oxygen generating means according to claim 4 utilizing electrolysis of water. The treated water flows into the electrolytic cell 42 from the upstream side. An electrode 44 is provided in the electrolytic cell 42, and power is supplied to the electrode 44 from a power supply control device 40. The power supply control device 40 may use a battery in addition to the commercial current.

By using the oxygen generating means provided with the electrode 44, the amount of oxygen generated by adjusting the amount of electricity to be applied can be adjusted, and the purification level can be easily controlled. Further, since there is no need to install a tank or a pump for supplying an oxygen source, it is possible to supply a space-saving oxygen generating means.

An example of the oxygen supply unit according to the third aspect will be described with reference to FIG. An intake valve is provided to take in the air purified by the filter 50 from outside and adjust the amount of air to be taken in. Next, air is introduced into the oxygen enrichment device 54 for enriching the oxygen concentration via the pump 52,
8 is supplied with oxygen-enriched air.

The oxygen enrichment device 54 is installed to increase the oxygen concentration in the air taken in from the outside. The oxygen enrichment device 54 is filled with zeolite as a nitrogen adsorbent, or a fluorine resin film excellent in oxygen permeability. Has been put. In FIG. 5, external air is sucked using a pump 52, but the filter 50 and the oxygen enrichment device 54 are used.
If the air permeation resistance is low, the oxygen supply unit may be set to a negative pressure without suction by the pump 52 so that air can be naturally sucked.

The oxygen-enriched air having a higher oxygen concentration than the outside air is mixed into the treated water by the oxygen suction means 58. 6 and 7 show an example of the oxygen inhaling means 58. The one shown in FIG. 6 uses an ejector as the oxygen suction means. The treated water moves from the upstream side to the downstream side where the irradiation unit is disposed through the purification device channel 64. The treated water flowing from the upstream side is discharged from the nozzle 62 into the ejector by water pressure. On the other hand, the oxygen-enriched air is sucked through the intake pipe 60, filled inside the ejector, and mixed with the treated water discharged from the nozzle. The treated water mixed with the oxygen-enriched air moves downstream and flows to the irradiation unit.

FIG. 7 shows an example in which a hollow fiber membrane which is a porous material is used as the oxygen suction means 58. The treated water flows in from the upstream side through the purifier flow path 74 and is moved downstream as it is. On the other hand, the oxygen-enriched air moves from the suction pipe 70 to the treated water from the hollow fiber membrane in the hollow fiber membrane cartridge 72 and is mixed with the treated water. If the filter material of the hollow fiber membrane is made of a fluorine resin having high oxygen permeability, the oxygen enrichment device shown in FIG. 5 becomes unnecessary, and the oxygen enrichment device 54 and the oxygen suction means 58 are integrated. Thus, the oxygen supply unit can be configured in a small space.

An embodiment of the present invention will be described with reference to FIG. The treated water is purified by passing through a filtration device 80, an activated carbon treatment tank 81, an oxygen supply unit 82 as an oxygen supply unit, an irradiation unit 83, and an exhausted ozone activated carbon treatment unit 84. In particular, when purifying bath water, a large amount of insoluble substances coming off from the hair and skin stratum corneum will come out, and detergent components such as soap and shampoo and water-soluble dirt components eluted from the skin will come out. Is known to come. Insoluble dirt contained in the treated water is removed by the filtration device 80, and water-soluble dirt components are adsorbed and removed by the activated carbon treatment unit 81. Oxygen is mixed into the treated water with reduced amount of dirt components by the oxygen supply unit, and is supplied to the irradiation unit 83 for decomposition. Further, excess ozone generated in the irradiation unit 83 is decomposed and removed by passing it through the waste ozone activated carbon processing unit 84, and is discharged as purified water.

The purified water obtained is free of organic compounds and is also sterilized, and is used for washing water for washing clothes and the like in homes and washing for discharging excrement in toilets. Can be reused as water.
When reusing bathtub water as water for bathing,
The purified water may be discharged into the bath tub and taken in again as treated water, circulated and purified. It can also be used for water purifiers that need to be highly purified.

The waste ozone activated carbon treatment section 84 may be replaced with activated carbon and may be filled with a platinum, iron, nickel or manganese catalyst. The filtration device 80, the activated carbon treatment tank 81, the air supply unit, the irradiation unit 83
Is not limited to the arrangement shown in FIG.
Alternatively, the activated carbon treatment tank 81 may be provided at a stage subsequent to the irradiation unit 83. The filtering device 80 and the activated carbon treatment tank 81 need to be arranged apart from the irradiation unit 83 so as not to be affected by the ultraviolet light from the irradiation unit 83.

FIG. 9 shows an embodiment of the present invention. Organic water in the treated water is decomposed in the irradiation part, and purified water containing ozone and hydroxyl radicals is washed water tank 9
Store in 6. After a certain amount is stored, the inflow of the treated water is stopped, and the purified water containing ozone and hydroxyl radicals is washed by flowing backward. It is desirable that the material of the washing water tank 96, the activated carbon treatment tank 91, and the waste ozone activated carbon treatment tank 94 be made of a special stainless steel, hard PVC, Teflon, glass, or the like, which is an ozone resistant material.

Purified water rich in ozone and hydroxyl radicals oxidizes and decomposes the organic compounds adsorbed on the activated carbon to lower the molecular weight and gasify and desorb them. By arranging the heater 97 in a pipe extending from the tank to the activated carbon treatment tank 91, purified water rich in ozone and hydroxyl radicals can be heated, and the desorption effect can be enhanced.

If the treated water is sufficiently clean, a pipe is directly provided to the oxygen supply unit. Oxygen and hydroxyl radicals are generated by mixing and irradiating the treated water with oxygen. In addition, the activated carbon treatment tank 91 can be backwashed.

An embodiment according to claims 7 and 8 is shown in FIG.
Will be described. The treated water is passed through the ion-exchange resin tank 100 to remove the hardness component in the treated water, and then undergoes a decomposition action via the oxygen supply unit 102 serving as an oxygen supply unit and the irradiation unit. By filling and using the cationic ion exchange resin in the ion exchange resin tank 100, cations such as calcium ions and magnesium ions contained in the treated water can be adsorbed. The ion-exchange resin tank 100 needs to be separated from the irradiation unit 104 so as not to be affected by the ultraviolet light. Although the ion-exchange resin tank 100 may be provided at the subsequent stage of the irradiation section 104, the generated ozone may be easily decomposed depending on the metal ion species contained in the treated water and may act as an obstructing ion. By disposing them in the former stage, it is possible to remove these interfering ions and efficiently decompose and remove organic compounds in the treated water.

Calcium ions and magnesium ions, as hardness components, adhere to the scale which reacts with carbonate ions contained in the treated water in the piping. The ion exchange resin tank 100 makes it possible to reduce the adhesion of scale.

An embodiment according to claim 9 will be described.
In one embodiment, the ozonizer for generating ozone and an irradiation unit using excimer are provided, and the treated water is a gas containing ozone from the ozonizer or a gas containing hydroxy radical which is a by-product of ozone. Mix with a suitable ejector. The mixed ozone and hydroxyl radicals act on organic compounds contained in the treated water and are oxidatively decomposed. In addition, by irradiating a short wavelength ultraviolet ray by providing an irradiation unit, the organic compound is decomposed, and also acts on oxygen contained in the treated water to be oxidized and decomposed by ozone or hydroxyl radical.

[0044]

According to the present invention, the following effects are exhibited by the above configuration. In claim 1, the amount of ozone and hydroxyl radicals generated is increased by irradiating the oxygen-enriched air with ultraviolet light from an excimer, so that the efficiency of decomposing organic compounds is improved even in sewage with a small amount of oxygen. It is possible to provide a simple purification apparatus with less maintenance simply by providing a purification apparatus and having an irradiation unit. Thus, the present invention can be used for a water purifier that simply purifies tap water, a device that purifies simply by circulating bath water or a water tank, and a device that purifies waste water.

According to a second aspect of the present invention, it is provided that oxygen is generated in an oxygen supply unit having an oxygen generating means to increase the generation amount of ozone and hydroxyl radicals, thereby improving the decomposition efficiency of organic compounds regardless of treated water. Made it possible. Further, by controlling the amount of generated oxygen, the decomposition efficiency can be optimized according to the treated water.

According to the third aspect, since the amount of ozone and hydroxyl radicals generated is increased by taking in air from the outside, supply of a supply source can be eliminated. It is possible to provide a purification device having a supply unit.

According to the fourth aspect, since the electrolysis apparatus for supplying oxygen using the water contained in the treated water is provided, it is not necessary to provide a device for supplying oxygen from outside, and the space can be saved. . In addition, since the amount of ozone or hydroxyl radical generated can be controlled by the amount of electricity applied to the electrodes, it is possible to optimize the decomposition efficiency of the organic compound. This makes it possible to use a water purifier for purifying tap water, a device for purifying by circulating bath water or a water tank, and a device for purifying waste water, which can adjust the decomposition according to the state of dirt. .

According to the fifth aspect of the present invention, it is possible to supply a purifying apparatus capable of purifying the water at a higher level, particularly when treating bath water or a septic tank containing a large amount of an organic compound as treated water. In addition, the present invention provides a purification device that is disposed so as not to be affected by ultraviolet light from the irradiation unit, and that can prevent light degradation of activated carbon. This makes it possible to exhibit stable organic compound decomposition performance and use it in water purifiers that purify tap water to a high degree, devices that purify water by circulating bath water and water tanks, and devices that purify wastewater to a high degree. Becomes

According to the sixth aspect, since the activated carbon and the filtration membrane are washed with water containing ozone and hydroxyl radicals, it is possible to provide a purification apparatus capable of extending the life of the activated carbon and the filtration membrane in one apparatus. In particular, when purifying bathtub water or water in a septic tank containing a large amount of dirt components, it is possible to control the cleaning so that the washing is performed frequently. by this,
Without replacing the activated carbon or the filtration membrane, it can be used for a purification device that requires less maintenance.

According to the seventh aspect, it is possible to provide a purifying apparatus capable of removing a hardness component and the like by using not only an organic compound but also an ion exchange resin. Further, the present invention provides a purifying apparatus which is provided so as not to be affected by ultraviolet light from the irradiation unit, and which can prevent light deterioration of the ion exchange resin. As a result, it is possible to connect and use a pipe such as a spraying device or a boiler in which scale generation is a problem.

According to the eighth aspect, it is possible to prevent the scale from adhering to the irradiating section and to reliably irradiate the treated water with ultraviolet light for a long period of time. Organic compounds in the treated water can be decomposed and removed well. As a result, a water purifier that purifies tap water, which can demonstrate long-life decomposition performance,
The present invention can also be applied to a device for purifying bath water or a water bath by circulating water, and a device for purifying waste water.

According to the ninth aspect, since means for generating active molecules such as hydroxy radicals and ozone is provided separately from the irradiation part, the organic compound can be oxidized and decomposed in multiple stages. Thus, by providing the irradiating unit also in the purification device in which the ozone generation device is already installed, a purification device with high decomposition efficiency can be provided.

As described above, according to the present invention, it is possible to supply a purifying apparatus for supplying oxygen to increase the amount of oxygen in the treated water and increasing the active oxygen of ozone and hydroxyl radicals contributing to oxidative decomposition. With the increase of active oxygen, the decomposition efficiency of organic compounds in the treated water is improved,
It is easy to optimize the decomposition of the organic compound by controlling the means for supplying oxygen. Therefore, it becomes possible to supply a purifier having a high decomposition efficiency to a water purifier or a bathtub having a purifying function which needs to be highly purified.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a first embodiment of a purification device of the present invention.

FIG. 2 is another conceptual diagram showing the first embodiment of the purification device of the present invention.

FIG. 3 is a schematic diagram of an oxygen supply unit using the oxygen generation means of the purification device of the present invention.

FIG. 4 is a schematic diagram of an oxygen supply unit using an oxygen suction unit of the purification device of the present invention.

FIG. 5 is a schematic diagram of an electrolysis tank using an electrolysis tank as an oxygen generating means.

FIG. 6 is a schematic diagram of an ejector using an ejector as an oxygen inhaling means.

FIG. 7 is a schematic diagram using a porous material as oxygen inhaling means.

FIG. 8 is a conceptual diagram showing a second embodiment of the purification device of the present invention.

FIG. 9 is a conceptual diagram showing a third embodiment of the purification device of the present invention.

FIG. 10 is a conceptual diagram showing a fourth embodiment of the purification device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Oxygen supply part, 12 ... Irradiation part, 30 ... Oxygen source tank, 32 ... Pump, 34 ... Filter, 36 ... Oxygen generation means, 38 ... Injection port, 40 ... Power supply control device, 42 ... Electrolyzer, 44 ... Electrode , 46: purification device channel, 50: filter, 52: pump, 54: oxygen enrichment device, 56: filter, 58: oxygen suction means, 60: intake pipe, 62: nozzle, 64: purification device channel, 70 ... intake pipe, 72 ... hollow fiber membrane cartridge, 74 ... purification device channel, 80 ... filtration device, 81 ... activated carbon treatment tank, 82 ... oxygen suction means, 83 ...
Irradiation unit, 84: waste ozone activated carbon treatment tank 85: oxygen enrichment device

 ──────────────────────────────────────────────────の Continued on the front page F term (reference) 4D025 AA03 AA08 AA09 AB19 BA08 DA03 DA04 DA05 DA06 4D037 AA02 AA09 AA11 AB01 AB02 BA18 CA01 CA02 CA03 CA04 CA12 CA15 4D050 AA04 AA10 AA12 AB06 AB07 AB12 BB01 BD09 BC09 BC09 CA08 CA09 CA10 CA15

Claims (9)

[Claims] An irradiator for irradiating treated water containing an organic compound with ultraviolet light to irradiate the treated water with an ultraviolet light to decompose the organic compound by irradiating the treated water with an oxygen supply unit for supplying a substance containing oxygen. And an excimer irradiating means for irradiating ultraviolet light by an excimer which oxidizes and decomposes an organic compound by generating ozone or hydroxyl radicals by acting on oxygen in the irradiation unit. 2. The purifying apparatus according to claim 1, wherein said oxygen supply unit is provided with oxygen generating means for generating a substance containing oxygen. 3. The purifying apparatus according to claim 1, wherein said oxygen supply unit is provided with an oxygen suction means for sucking a substance containing oxygen. 4. The purifying apparatus according to claim 2, wherein said oxygen generating means is constituted by an electrolysis tank. 5. The purifying apparatus according to claim 1, wherein the activated carbon adsorbing tank or the filtering apparatus is provided between the irradiation units. 6. The purifying apparatus according to claim 5, wherein in the purifying apparatus, water containing ozone and hydroxyl radicals generated from the irradiation unit at the time of cleaning is caused to flow into the activated carbon adsorption tank or the filtering apparatus. . 7. The purification device according to claim 1, wherein the ion exchange resin is provided at a distance from the irradiation unit. 8. The purification device according to claim 7, wherein the ion exchange resin is provided at a stage before the irradiation unit. 9. A purifying apparatus for irradiating treated water containing an organic compound with ultraviolet light, wherein the irradiating unit is configured to decompose the organic compound.
A purifying apparatus, comprising: an active molecule supply section for supplying a substance containing ozone or a hydroxyl radical to oxidatively decompose an organic compound.