JP2008284272A - Odor component decomposing or sterilizing apparatus, method for decomposing odor component or sterilizing bacteria, and air cleaning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an odor component decomposing or sterilizing apparatus capable of further improving efficiencies of decomposing odor components or sterilizing bacteria, having no risk of residual toxicity and being safely used; a method for decomposing the odor components or sterilizing the bacteria; and an air cleaning apparatus. <P>SOLUTION: This decomposing or sterilizing apparatus for bringing singlet oxygen in contact with the odor components or the bacteria and decomposing the odor components or sterilizing the bacteria, is provided with a treatment tank having liquid containing photosensitizer pigments in its inside, and an air feeder for feeding air or liquid containing the odor components or the bacteria in the liquid of the treatment tank. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an apparatus for decomposing and sterilizing odor components using singlet oxygen, a method for decomposing odor components or sterilizing miscellaneous bacteria, and an air cleaning apparatus.

  Conventionally, as a method for deodorizing and sterilizing, a method using ozone or ultraviolet light, a method of adsorbing to activated carbon, and a method of decomposing by contacting with a high temperature heater are known. However, the method using ozone has a risk that residual ozone, which is harmful to the human body, may be released from the sterilization / deodorizing device, and the method using ultraviolet rays has a problem that the container is easily damaged by the ultraviolet rays. . In addition, since the deodorizing method using activated carbon decreases in activity as the amount of adsorption increases, it is necessary to regenerate the activated carbon every predetermined time. Furthermore, the deodorizing method by heating has a problem of high cost because it requires a large amount of energy for heating.

As a deodorizing method which solves the said problem, the thing of the following patent document 1 is mentioned, for example. In the deodorization method disclosed in Patent Document 1, an organic dye and / or fullerene that can be in a triplet excited state by light absorption is immobilized on a carrier, and the organic dye and / or fullerene contains a gas phase containing oxygen. In the inside, singlet oxygen is generated by irradiating ultraviolet rays or the like, and the singlet oxygen is brought into contact with the odor component in the gas phase to decompose the odor component.
JP 2006-212383 A

  In the deodorizing method as in Patent Document 1, since ozone is not used, there is no risk of residual toxicity, it can be used safely, and odorous components in the gas phase can be removed with a very simple device and low running cost. . However, the odor component is diffused in the gas phase, and the odor component may not be sufficiently decomposed by the air contact between the odor component in the gas phase and singlet oxygen.

  Therefore, the present invention provides an odor component decomposition or sterilization apparatus capable of further improving the odor component decomposition and sterilization efficiency of germs, and a method and an air cleaning device for decomposing the odor component or sterilization of germs as compared with the prior art. The purpose is to provide.

Means and effects for solving the problems

(1) The decomposition or sterilization apparatus of the present invention is a decomposition or sterilization apparatus for degrading an odor component or sterilizing a bacterium by contacting singlet oxygen with an odor component or a bacterium, and includes a photosensitizing dye. And a supply tank for supplying a gas or a liquid containing the odor component or the various germs into the liquid in the processing tank.

(2) It is preferable that the decomposition | disassembly or disinfection apparatus of this invention has a light source which irradiates a light beam to the said photosensitizing dye.

According to the configurations of (1) and (2) above, since the singlet oxygen and the odorous component and bacteria dissolved in the liquid are in gas-liquid or liquid-liquid contact, the singlet oxygen, the odorous component and bacteria are more reliably It is possible to provide a device that can further improve the decomposition efficiency of odor components and the sterilization efficiency of various germs. In addition, the lifetime of singlet oxygen is extremely short and no harmful ozone is used, so there is no risk of residual toxicity and it can be used safely. Furthermore, since the treatment tank is a sealed container, singlet oxygen does not jump out of the apparatus, and a safe apparatus can be provided.
Note that visible light or sunlight can be used as the light source, and when these are used, there is almost no running cost associated with the light source. Moreover, when sunlight is used, it is not necessary to install a light source.

(3) It is preferable that the decomposition | disassembly or disinfection apparatus of this invention has a microbubble supply device which supplies the microbubble containing oxygen to the said liquid of the said processing tank.

  According to the configuration of (3) above, the decomposition of odor components and the sterilization of miscellaneous bacteria can be further promoted by the microbubbles supplied to the liquid inside the treatment tank.

(4) In the decomposition or sterilization apparatus of the present invention, the liquid inside the treatment tank is water or a solution containing water as a main component, and the microbubbles containing oxygen are generated using air. Preferably there is.

  According to the configuration (4), there is no concern about environmental pollution, and almost no running cost is required for the liquid and microbubbles inside the processing tank.

(5) The method of decomposing the odor component of the present invention or sterilizing miscellaneous substances includes a step of irradiating a liquid containing a photosensitizing dye with light to generate singlet oxygen, and the singlet oxygen and odor component. Or it consists of the process which makes various microbes contact gas-liquid or liquid-liquid.

  According to the configuration of (5) above, it is possible to provide a method capable of further improving the decomposition of odor components and the sterilization efficiency of miscellaneous bacteria as compared with the conventional case. In addition, since the lifetime of singlet oxygen is extremely short and no harmful ozone is used, there is no risk of residual toxicity, and a safe method for decomposing or sterilizing odorous components can be provided. Note that visible light or sunlight can be used as the light source, and when these are used, running costs relating to the light source are hardly required.

(6) The air purifying apparatus of the present invention includes a scrubber for separating clean air and odorous components or bacteria from air containing odorous components or germs, and air containing the odorous components or germs inside the scrubber. It is an air purifier which has an in-feeder which sends in, Comprising: The decomposition | disassembly or disinfection apparatus of any one of (1)-(4) which decomposes | disassembles or disinfects the odor component or miscellaneous bacteria sorted by the said scrubber It is characterized by having.

  According to the configuration of (6) above, it is possible to provide an air cleaning device that can further improve the decomposition efficiency of odor components and the sterilization efficiency of various germs. In addition, the lifetime of singlet oxygen used in the decomposition or sterilization apparatus is extremely short, and furthermore, since no harmful ozone is used, there is no risk of residual toxicity, and a safe air cleaning apparatus can be provided.

<First Embodiment>
Hereinafter, an odor substance decomposing apparatus according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing an odor substance decomposing apparatus according to the first embodiment of the present invention.

  In FIG. 1, the odor substance decomposition apparatus 1 includes a gas supply device 2, a treatment tank 6, a light irradiation device 9, and a recovery device 11.

  The gas supply device 2 includes an anemometer 3 and an odor generating device 4 in which chicken poultry 5 is disposed. The anemometer 3 communicates with the space in which the chicken dung 5 in the odor generating device 4 is accommodated via a pipe, and is installed on the upstream side of the gas supply device 2. This flow meter 3 measures the flow rate of the gas supplied to the gas supply device 2. The odor generating device 4 generates odor from the blower 12 that has passed through the anemometer 3 and the chicken poultry 5.

  The treatment tank 6 communicates with a space in which the chicken poultry 5 of the odor generating device 4 is accommodated via a tube, and contains a photosensitizing dye solution 7 in such an amount that at least one end of the tube is immersed therein. Have. The photosensitizing dye solution 7 contains a photosensitizing dye. Examples of the photosensitizing dye include methylene blue, thionine, rose bengal, erythrocin, eosin Y, fluorescein, proflavine, fluorenone, and rhodamine B. Organic pigments such as tetraphenylporphyrin, chlorophyll (chlorophyll), chlorophyllin, hemoglobin, hemin, and derivatives thereof can be suitably used. Moreover, as fullerenes, C60 and C70 can be used suitably. The gas 8 is obtained by removing or removing odor components dissolved in the photosensitizing dye solution 7 from the gas supplied from the gas supply device 2.

  The light irradiation device 9 irradiates the photosensitizing dye solution 7 with white light 10. In addition, the wavelength of the light irradiated when using rose bengal as the photosensitizing dye is preferably 490 to 580 nm. Moreover, light sources, such as LED, can be used for the light irradiation apparatus 9, and instead of the light irradiation apparatus 9, sunlight may be used.

  The recovery device 11 recovers the gas 8 from which the odor component dissolved in the photosensitizing dye solution 7 is removed, and communicates with the inside of the treatment tank 6.

  Next, a method for decomposing odor components of the odor substance decomposing apparatus according to the first embodiment of the present invention will be described. The blower 12 supplied to the gas supply device 2 passes through the anemometer 2 and comes into contact with the chicken dung 5 by the odor generator 4 to generate an odor component. The gas containing the generated odor component is directly supplied to the photosensitizing dye solution 7 in the treatment tank 6, and the odor component in the gas is dissolved in the photosensitizing dye solution 7. The gas 8 from which the odor component is removed by this dissolution moves from the treatment tank 6 to the recovery device 11 and is recovered by the recovery device 11.

  Here, the removal of the odor component in the photosensitizing dye solution 7 of the treatment tank 6 will be described in detail. White light 10 emitted from the light irradiation device 9 is irradiated to the photosensitizing dye, and the photosensitizing dye is changed from the ground state to the singlet excited state and further to the triplet excited state, and the energy is supplied from the gas supply device 2. Singlet oxygen is generated by being given to ground state oxygen molecules present in the gas. Then, the generated singlet oxygen comes into contact with the dissolved odor component, and the odor component is decomposed. In addition, when microbubbles are supplied to the photosensitizing dye solution 7 in the treatment tank 6, decomposition of odor components can be further promoted.

Note that singlet oxygen is a kind of active oxygen and is an extremely unstable substance and has a strong oxidizing action. However, its lifetime is extremely short, with a half-life of 10 ⁻⁶ seconds in water and 10 ⁻³ seconds in air, and strong oxidizing action only within a few centimeters in water and within a few tens of centimeters in air. Will occur and will return to normal oxygen at further distances. Therefore, there is no risk of residual toxicity due to singlet oxygen, and there is no fear of jumping out of the sealed container of the processing tank 6.

  According to this embodiment, the singlet oxygen and the odor component dissolved in the liquid are in gas-liquid contact, so that the odor component and the singlet oxygen can be contacted more reliably, and the decomposition efficiency of the odor component is further improved. It is possible to provide a device 1 for decomposing and a method for decomposing odor components. In addition, since the lifetime of singlet oxygen is extremely short and no harmful ozone is used, there is no risk of residual toxicity, and furthermore, singlet oxygen does not jump out of the sealed container of the treatment tank 6, A safe odor substance decomposing apparatus 1 and a method for decomposing odor substances can be provided. Moreover, sunlight or white light can be used as the light source 9, and a photosensitizing dye solution 7 in which a photosensitizing dye is dissolved in water can be used. When these are used, the running cost for the light source 9 and the solution 7 is hardly required, and there is no concern about environmental pollution.

Second Embodiment
Next, an air cleaning apparatus according to a second embodiment of the present invention will be described. FIG. 2 is a schematic view showing an air cleaning device according to the present invention.

  In FIG. 2, the air cleaning device 21 includes a filter 22, motors 23 and 26, a scrubber 24, an air conditioner 27, an odor substance decomposition / sterilization device 28, and a microbubble generator 29 that generates microbubbles 32. It consists of.

  The filter 22 is installed at the inlet of the air cleaning device 21 and removes dust with large particles.

  The motor 23 sucks the contaminated air 33 into the air cleaning device 21 and sends the contaminated air 33 from which dust with large particles is removed by the filter 22 into the scrubber 24, and is installed on the downstream side of the filter 22. ing.

  The scrubber 24 sprays the cleaning liquid 25 onto the contaminated air 33 to separate odor components and various germs contained in the contaminated air 33.

  The motor 26 feeds the cleaning liquid 25 sprayed by the scrubber 24 into the odor substance decomposition / sterilization apparatus 28, and is installed between the scrubber 24 and the odor substance decomposition / sterilization apparatus 28.

  The odor substance decomposing / sterilizing device 28 has a photosensitizing dye solution 30 therein. When visible light / sunlight 31 is irradiated to the photosensitizing dye solution 30, the photosensitizing dye is changed from the ground state to a singlet excited state and further to a triplet excited state, and the energy of the photosensitizing dye is present in the microbubbles 32. It is given to oxygen molecules in the state, and singlet oxygen is generated.

  The microbubble generator 29 generates microbubbles 32 from the air in the scrubber 24. When the generated microbubbles 32 are sent to the odorous substance decomposition / sterilization apparatus 28, decomposition and sterilization of the odorous substance in the odorous substance decomposition / sterilization apparatus 28 are promoted.

  The air conditioner 27 has a pipe communicating with the upper part of the scrubber 24, and adjusts and maintains the cleanliness, temperature, humidity, pressure, etc. of the air sent from the scrubber 24 within the specified range. It is.

  Next, the operation of the air cleaning device 21 will be described. When the contaminated air 33 is sucked into the air purifier 21 by the motor 23, dust with large particles is removed by the filter 22, and then is further fed into the scrubber 24 by the motor 23. In the scrubber 24, the cleaning liquid 25 is injected into the contaminated air 33, and the odor components and the various germs contained in the contaminated air 33 are dissolved and separated in the cleaning liquid 25. The air from which the odor components and bacteria have been separated and removed is sent to the air conditioner 27, and after the cleanliness, temperature, humidity, pressure and the like are adjusted, the air is discharged to the outside of the air cleaner 21. On the other hand, the odor component and the various germs separated in the scrubber 24 are sent to the odor substance decomposition / sterilization device 28 by the motor 26 in a state dissolved in the cleaning liquid 25.

  In the odor substance decomposition / sterilization apparatus 28, visible light / sunlight 31 is irradiated to the photosensitizing dye solution 30 to change the photosensitizing dye from the ground state to the singlet excited state, and further to the triplet excited state. Singlet oxygen is generated by being given to the ground state oxygen molecules present in the microbubbles 32. The generated singlet oxygen comes into contact with the odorous components and germs sent into the odorous substance decomposition / sterilization device 28, and the odorous components are decomposed and the germs are sterilized. In the odor substance decomposition / sterilization apparatus 28, since the microbubbles 32 are supplied from the microbubble generator 29, decomposition of odor components and sterilization of various bacteria are further promoted. The microbubbles 32 are generated using the air in the scrubber 24, and the contaminated air 33 is effectively used. The photosensitizing dye solution 30 that has been subjected to decomposition of odor components and sterilization of various fungi is sent to the scrubber 24 and repeatedly used as the cleaning liquid 25. Examples of photosensitizing dyes include methylene blue, thionine, rose bengal, erythrosine, eosin Y, fluorescein, proflavine, fluorenone, rhodamine B, tetraphenylporphyrin, chlorophylls, chlorophyrin, hemoglobins, hemin. Organic dyes such as these and their derivatives can be preferably used. Moreover, C60 and C70 can be used suitably as fullerenes. Further, as the photosensitizing dye solution 30, water or a solution containing water as a main component and the photosensitizing dye dissolved therein can be used.

  According to the present embodiment, the odorous substance decomposition / sterilization device 28 makes the singlet oxygen and the odorous components and bacteria contained in the contaminated air 33 come into gas-liquid or liquid-liquid contact. It is possible to provide the air purifying device 21 that can contact the odor component and the various germs and further improve the decomposition of the odor component and the sterilization efficiency of the various germs. In addition, the lifetime of singlet oxygen used in the odorous substance decomposition / sterilization device 28 is extremely short, and since no harmful ozone is used, there is no risk of residual toxicity and a safe air cleaning device 21 is provided. can do.

  Next, an example of the odor substance decomposition / sterilization apparatus having the same configuration as that of the odor substance decomposition apparatus according to the first embodiment of the present invention will be described.

  The decomposition amount of the odor component was measured using the odor substance decomposition / sterilization apparatus having substantially the same configuration as the odor substance decomposition apparatus according to the first embodiment of the present invention. The odor substance decomposition / sterilization apparatus used in Examples 1 and 2 does not use a gas supply apparatus, but a specific odor component is dissolved in an aqueous methanol solution in advance, and a photosensitizing dye solution using this solution is dissolved inside the treatment tank. The point used as a liquid is different from the odor substance decomposition apparatus according to the first embodiment. In Examples 1 and 2, 300 mL of a 10 μM RB solution using rose bengal (RB) as a photosensitizing dye was used as the liquid inside the processing tank. In addition, bubbles were fed into the RB solution at 50 mL / min.

Example 1
As an odor component, methyl mercaptan, methyl sulfide and methyl disulfide are dissolved in a 50 (%) v / v methanol aqueous solution, and an RB solution having a methyl mercaptan concentration of 100 μg / L, a methyl sulfide concentration of 186 μg / L and a methyl disulfide concentration of 100 μg / L. It was created. The RB solution was irradiated with white light, and the change over time in the odor component concentration of the RB solution (10 minutes, 20 minutes, 30 minutes, and 60 minutes later) was measured by gas chromatography. Moreover, the time-dependent change (10 minutes, 20 minutes, 30 minutes, and 60 minutes later) of the odor component density | concentration of RB solution when not irradiating white light to RB solution was measured with the gas chromatography. In the measurement, 3 mL of liquid inside the treatment tank at each time was collected, diluted 5 times with a 10 (%) v / v aqueous methanol solution, vaporized with a headspace sampler, and analyzed by gas chromatography. The obtained results are shown in FIGS.

The measurement conditions of the headspace sampler and gas chromatography used in Example 1 are shown below.
[Head space sampler (made by 7694 Headspace sampler Agilent) conditions]
Oven temperature: 60 ° C
Loop temperature: 120 ° C
transfer line Temperature: 220 ° C
Incubation time: 45 minutes [Gas chromatography measurement conditions]
Gas chromatography: 6890N (manufactured by Agilent)
Column: DB-1 (inner diameter 0.32 mm, length 60 m, film thickness 5 μm) (manufactured by Agilent)
Temperature raising condition: held at 35 ° C. for 5 minutes, then raised to 250 ° C. (temperature raising rate 10 ° C./min) and held at 250 ° C. for 3 minutes Sample inlet temperature: 220 ° C.
Detector: 5380 PFPD (manufactured by O-I-Analytical)
Detection temperature: 250 ° C
Carrier gas flow rate: Helium 1.5mL / min

(Example 2)
As odor components, indole and skatole were dissolved in a 10 (%) v / v aqueous methanol solution to prepare an RB solution having an indole concentration of 10.6 mg / L and a skatole concentration of 12.5 mg / L. This RB solution was irradiated with white light, and the change over time in the odor component concentration of the RB solution (10 minutes, 20 minutes, 30 minutes, and 60 minutes later) was measured by liquid chromatography. In addition, when the RB solution was not irradiated with white light, and 300 mL of a 10 (%) v / v aqueous methanol solution having an indole concentration of 10.6 mg / L and a skatole concentration of 12.5 mg / L was used as the solution inside the treatment tank. The change with time in the odor component concentration of the solution inside the treatment tank (after 10 minutes, 20 minutes, 30 minutes, and 60 minutes) was measured by liquid chromatography. In addition, the measurement collected liquid 3mL inside the processing tank of each time, and analyzed by liquid chromatography what diluted 5 times with 10 (%) v / v methanol aqueous solution. The obtained results are shown in FIGS.

The measurement conditions of liquid chromatography used in Example 2 are shown below.
[Measurement conditions for liquid chromatography]
Column: JASCO Finepak SIL C-18 (inner diameter 4.6 mm, length 250 mm, film thickness 5 μm)
Column temperature: 40 ° C
Eluent (mobile phase): methanol: water = 45: 55
Flow rate: 1 mL / min Detector: UV-8000 (manufactured by TOYOSODA)
Detection wavelength: UV280nm

  3 to 7, it can be seen that when the RB solution is irradiated with white light, the odor component is decomposed, and methyl mercaptan, methyl sulfide and skatole are decomposed almost entirely. On the other hand, when the RB solution is not irradiated with light or when a photosensitizing dye (rose bengal) is not used, it is understood that the odor component is hardly decomposed. Therefore, it can be seen that a photosensitizing dye and a light beam are necessary for the decomposition of the odor component, and if any of them is missing, the odor component is hardly decomposed.

(Example 3)
Next, hydrogen sulfide, methyl mercaptan, methyl sulfide, indole and skatole contained in livestock excrement using the odor substance decomposition / sterilization apparatus having the same configuration as the odor substance decomposition apparatus according to the first embodiment of the present invention The concentration of was measured.

  The excrement produced by the following method was used as the excrement of livestock to be placed in the odor generator. First, 120 mL of pure water was added to 320 g of chicken excrement, and mixed uniformly. The mixture was snap frozen in liquid nitrogen, stored and then thawed in the refrigerator until the experiment was performed. 50 g of thawed chicken excrement was placed in the odor generator.

  In this example, the gas supply apparatus was aerated at 100 mL / min for 10 hours, and a gas containing odor components generated from chicken excrement was supplied into the treatment tank. As the liquid inside the treatment tank, 1400 mL of 10 μM RB solution was used. The concentrations of hydrogen sulfide, methyl mercaptan, methyl sulfide, indole and skatole in the RB solution when the RB solution was irradiated with white light and when it was not irradiated were measured. The concentrations of hydrogen sulfide, methyl mercaptan, and methyl sulfide were measured by gas chromatography and performed under the same conditions as in Example 1. Indole and skatole were measured under the same conditions as in Example 2 as measured by liquid chromatography. The obtained result is shown in FIG. FIG. 8A is a diagram showing a gas chromatography measurement result when the RB solution is not irradiated with white light, and FIG. 8B is a gas chromatography measurement result when the RB solution is irradiated with white light. FIG. Since the amount of indole generated is close to 0 and skatole was a trace amount that cannot be detected, the results of indole and skatole are omitted.

  It can be seen from FIG. 8 that a large amount of hydrogen sulfide is generated from chicken excrement (see FIG. 8A). When the RB solution is irradiated with white light, most of the generated hydrogen sulfide is decomposed (see FIG. 8B), but when the RB solution is not irradiated with white light, the hydrogen sulfide is decomposed. (See FIG. 8 (a)). Therefore, it turns out that embodiment which concerns on this invention is effective in decomposition | disassembly of the hydrogen sulfide generated in large quantities from livestock excrement. It can also be seen that methyl mercaptan is more generated than methyl sulfide and is all decomposed.

  The present invention can be changed in design without departing from the scope of the claims, and is not limited to the above-described embodiments and examples. For example, in the first embodiment, when sunlight is used without using the light irradiation device, it is not necessary to install the light irradiation device.

It is a mimetic diagram showing the odor substance decomposition device concerning a 1st embodiment of the present invention. It is a schematic diagram which shows the air purifying apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows the time-dependent change of the methyl mercaptan density | concentration which concerns on Example 1 of this invention. It is a figure which shows the time-dependent change of the methyl sulfide density | concentration which concerns on Example 1 of this invention. It is a figure which shows a time-dependent change of the methyl disulfide density | concentration which concerns on Example 1 of this invention. It is a figure which shows the time-dependent change of the indole density | concentration which concerns on Example 2 of this invention. It is a figure which shows a time-dependent change of the skatole density | concentration which concerns on Example 2 of this invention. (A) is a figure which shows the measurement result of the gas chromatography at the time of not irradiating white light to RB solution which concerns on Example 3 of this invention, (b) is RB solution which concerns on Example 3 of this invention It is a figure which shows the measurement result of the gas chromatography at the time of irradiating to white light.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Odor substance decomposition apparatus 2 Gas supply apparatus 3 Current meter 4 Odor generation apparatus 5 Chicken dung 6 Processing tank 7 Photosensitizing dye solution 8 Gas 9 Light irradiation apparatus 10 White light 11 Recovery apparatus 12 Air blow 21 Air cleaning apparatus 22 Filter 23 Motor 24 Scrubber 25 Cleaning liquid 26 Motor 27 Air conditioner 28 Odor substance decomposition and sterilization device 29 Micro bubble generator 30 Rose Bengal solution 31 Visible light, sunlight 32 Micro bubble 33 Contaminated air 34 Purified air

Claims (6)

A decomposition or sterilization device for contacting singlet oxygen with an odor component or a bacterium to decompose the odor component or sterilize the bacterium,
A treatment tank having a liquid containing a photosensitizing dye therein;
A decomposing or sterilizing apparatus comprising: a supply unit configured to supply a gas or a liquid containing the odor component or the various bacteria into the liquid of the treatment tank.   The decomposition or sterilization apparatus according to claim 1, further comprising a light source that irradiates the photosensitizing dye with light.   3. The decomposition or sterilization apparatus according to claim 1, further comprising a microbubble supply device that supplies microbubbles containing oxygen into the liquid in the treatment tank.   The liquid in the treatment tank is water or a solution containing water as a main component, and the microbubbles containing oxygen are generated using air. Decomposition or sterilization equipment. Irradiating a liquid containing a photosensitizing dye with light to generate singlet oxygen;
A method of decomposing an odor component or disinfecting a bacterium, comprising a step of bringing the singlet oxygen and an odor component or a bacterium into contact with each other in a gas-liquid or liquid-liquid contact. An air cleaner having a scrubber for separating clean air and odor components or germs from air containing odor components or germs, and a feeder for feeding the air containing the odor components or germs into the scrubber. A device,
An air cleaning apparatus comprising the decomposition or sterilization apparatus according to any one of claims 1 to 4, which decomposes or sterilizes odor components or various fungi sorted by the scrubber.

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