JPWO2008105295A1 - Fluid purification device - Google Patents

Abstract

This fluid purification device emits light for activating a photocatalytic substance, and one or more photocatalyst-carrying porous bodies (1) in which a porous photocatalytic substance is carried at least at an inlet portion of the porous body. One or more light sources (5) are included. According to such a fluid purification device, harmful substances and pollutants contained in the fluid can be efficiently removed.

Description

  The present invention relates to a fluid purification device that removes harmful substances, contaminants, and the like contained in a fluid such as air or water.

  In recent years, with increasing awareness of the environment, fluid purification devices that remove harmful substances, contaminants, and the like contained in fluids such as air or water have been developed and provided to the market. In such a fluid purification apparatus, as a material for removing harmful substances and pollutants in the fluid, porous materials such as activated carbon and silica gel, and photocatalytic materials such as titanium oxide and zinc oxide are used. Here, the harmful substance refers to a carcinogenic substance such as toluene, and an irritating substance such as formaldehyde and ammonia. Further, the pollutant refers to excrement from living organisms such as sweat, various organic substances, and the like.

  Porous materials are removed by adsorbing harmful substances and pollutants contained in air or water. When these substances are adsorbed to their adsorption limit, their adsorption performance is lost. The substance cannot be removed. On the other hand, the photocatalytic material decomposes and removes harmful substances and pollutants contained in air or water due to its photocatalytic ability, and these substances can be removed as long as light is irradiated. There is no adsorption capacity.

  Therefore, a composite material has been proposed in which a porous material and a photocatalytic material are combined to adsorb and decompose harmful substances and pollutants. For example, Japanese Unexamined Patent Publication No. 2003-226512 (hereinafter referred to as Patent Document 1) discloses a photocatalytic activated carbon in which a thin film of a photocatalyst is formed and supported on the surface of the activated carbon by vapor deposition. Japanese Patent Application Laid-Open No. 2005-263610 (hereinafter referred to as Patent Document 2) discloses a titanium oxide-coated activated carbon in which titanium oxide is coated on the surface of activated carbon using a polymer emulsion or a polymer emulsion and an inorganic binder.

  However, the photocatalytic activated carbon of Patent Document 1 is obtained by vapor deposition, is expensive, and has a photocatalytic film formed on the surface thereof, so that its adsorption performance is lowered. In addition, since the titanium oxide-coated activated carbon of Patent Document 2 has a titanium oxide coating formed on its surface, its adsorption performance is reduced, and a polymer emulsion or a polymer emulsion and an inorganic material are used to form a titanium oxide coating on the surface. Since a binder is used, the photocatalytic ability of titanium oxide is reduced. That is, the photocatalyst-supporting porous bodies of Patent Documents 1 and 2 have adsorption ability and photocatalytic ability, but their ability is not high. Therefore, development of a photocatalyst-supporting porous body having high adsorption ability and photocatalytic ability has been desired.

In addition, in order to increase the photocatalytic ability of the photocatalytic material, it has been proposed to use a light source having a peak wavelength in a wavelength region suitable for activating the photocatalytic material instead of sunlight. For example, Japanese Patent Laid-Open No. 11-309202 (hereinafter referred to as Patent Document 3) discloses an LED as a light source that efficiently activates titanium oxide as a photocatalyst. Furthermore, Japanese Patent Laying-Open No. 2005-230760 (hereinafter referred to as Patent Document 4) uses a light-transmitting porous adsorbent carrying a photocatalyst (titanium oxide) and discharges ultraviolet rays as a light source for activating the photocatalyst. An air purifier using a tube or LED is disclosed. However, the air purification device of Patent Document 4 is limited to a light-transmitting porous adsorbent due to its structure. Moreover, since the porous adsorbent (photocatalyst carrier) carrying the photocatalyst is fixed at a predetermined position with an inorganic adhesive, the portion of the photocatalyst carrier that is in contact with the adhesive is in contact with air. Is inhibited, and the photocatalytic ability is reduced.
JP 2003-226512 A JP 2005-263610 A JP-A-11-309202 JP-A-2005-230760

  An object of the present invention is to provide a fluid purification device capable of efficiently removing harmful substances and pollutants contained in a fluid.

  The present invention includes one or more photocatalyst-supporting porous bodies in which a porous photocatalyst substance is supported at least at the entrance of the pores of the porous body, and one or more light emitting light that activates the photocatalyst substance. A fluid purification device including a light source.

  In the fluid purification device according to the present invention, the photocatalyst-supporting porous body can have any shape of powder, granule, honeycomb, and brush. The photocatalytic material can be titanium oxide. Here, the light source can be a light emitting element having an emission peak wavelength of 700 nm or less.

  Moreover, in the fluid purification apparatus according to the present invention, the light source can be isolated from the fluid by the light transmissive material. The light source can include any of a point light source, a line light source, and a surface light source. Here, the surface light source includes an original light source and one of a light guide plate and a light diffusing material, and the original light source can include either a point light source or a line light source.

  The fluid purification device according to the present invention further includes a sheet for spotting the photocatalyst-supporting porous body, and a light source is disposed to face the photocatalyst-supporting porous body spotted on the sheet. it can.

  Moreover, the fluid purification apparatus concerning this invention, the light source contains a surface light source, and the sheet | seat on which the photocatalyst porous body was spotted can be arrange | positioned on the main surface of a surface light source.

  In the fluid purification device according to the present invention, the photocatalyst-supporting porous body has a honeycomb shape, and the light source can be disposed to face the honeycomb opening surface of the photocatalyst-supporting porous body. In the fluid purification device according to the present invention, the photocatalyst-supporting porous body has a brush-like shape, and the light source can be disposed to face the side surface of the brush bristle portion of the photocatalyst-supporting porous body.

  In the fluid purification device according to the present invention, the light source can be disposed between the plurality of photocatalyst-supporting porous bodies.

  In the fluid purification device according to the present invention, the light source may include a surface light source, and the surface light source and the photocatalyst-supporting porous body may be disposed so that the fluid penetrates the main surface of the surface light source.

  In the fluid purification device according to the present invention, the fluid may be air or water.

  ADVANTAGE OF THE INVENTION According to this invention, the fluid purification apparatus which can remove efficiently the harmful | toxic substance and contaminant contained in a fluid can be provided.

It is the schematic which shows an example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view at IB of (a). It is a schematic sectional drawing which shows the other example of the fluid purification apparatus concerning this invention. It is a schematic sectional enlarged view which shows the other example of the fluid purification apparatus concerning this invention. It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view at IVB of (a). It is a schematic sectional drawing which shows the further another example of the fluid purification apparatus concerning this invention. It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, (b) shows a schematic cross-sectional view at VIB of (a), and (c) shows a schematic cross-sectional view at VIC of (a). It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, (b) shows a schematic cross-sectional view at VIIB of (a), and (c) shows a schematic cross-sectional view at VIIC of (a). It is a schematic sectional drawing which shows the further another example of the fluid purification apparatus concerning this invention. It is a schematic perspective view which shows the further another example of the fluid purification apparatus concerning this invention. It is a schematic perspective view which shows the further another example of the fluid purification apparatus concerning this invention. It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view in XIB of (a). It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view of XIIB in (a). It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view of XaIB of (a). It is a schematic perspective view which shows the further another example of the fluid purification apparatus concerning this invention. It is a schematic perspective view which shows the further another example of the fluid purification apparatus concerning this invention. It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view of (a) in XVIB. It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view of (a) at XVIIB. It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view of XVIIIB in (a). It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view at XIXB of (a). It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view at XXB of (a). It is the schematic which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a schematic perspective view of the fluid purification device, and (b) shows a schematic cross-sectional view of XXIB in (a). It is a schematic perspective view which shows the further another example of the fluid purification apparatus concerning this invention. It is a fragmentary sectional view which shows the further another example of the fluid purification apparatus concerning this invention. It is a fragmentary sectional view which shows the further another example of the fluid purification apparatus concerning this invention. It is a fragmentary sectional view which shows the further another example of the fluid purification apparatus concerning this invention. It is a fragmentary sectional view which shows the further another example of the fluid purification apparatus concerning this invention. Here, (a) shows a sectional view of a point light source or a line light source, and (b) shows a sectional view of a surface light source. It is a partial expanded sectional view of the photocatalyst carrying porous body used for the present invention. 3 is a graph showing the purification performance of the fluid purification device in Example 1. 6 is a graph showing the purification performance of the fluid purification device in Example 3. It is a graph which shows the purification performance of the fluid purification apparatus in Examples 5-12. It is a graph which shows the purification performance of the fluid purification apparatus in Examples 13-20. It is a graph which shows the purification performance of the fluid purification apparatus in Examples 21-26. Here, (a) shows the purification performance at the outlet of the first-stage fluid purification device, and (b) shows the purification performance at the outlet of the second-stage fluid purification device. It is a graph which shows the purification performance of the fluid purification apparatus in Examples 27 and 28. Here, (a) shows the purification performance at the outlet of the first-stage fluid purification device, (b) shows the purification performance at the outlet of the second-stage fluid purification device, and (c) shows the third-stage fluid. The purification performance at the outlet of the purification device is shown.

Explanation of symbols

  1 photocatalyst-supporting porous body, 1a brush bristle portion, 1b brush base portion, 1d lower surface, 1h honeycomb surface, 1k, 1k ′ honeycomb opening surface, 1u upper surface, four source light source, 4m, 7m, 7n, 8m, 8n main surface 5 light source, 6 light transmissive material, 6c light transmissive coating material, 6p light transmissive sheet, 7 light guide plate, 7s end face, 8 light diffusing material, 9 reflector, 10 porous body, 10e inlet portion, 10f intermediate Hole, 10 g micro hole, 10 h hole, 10 s surface, 11 photocatalytic substance, 50 container, 52 wiring, 54 d, 73 lower plate, 54 u, 75 upper plate, 71 sheet, 74 fixing frame, 76 light source fixing plate, 77 column, 79 Turbulence generator.

  1 to FIG. 22 and FIG. 27, the fluid purification apparatus according to the present invention has at least one porous photocatalytic substance 11 carried on the inlet portion 10e of at least the hole 10h of the porous body 10. The photocatalyst-supporting porous body 1 and one or more light sources 5 that emit light that activates the photocatalytic substance. The photocatalyst-supporting porous body 1 used in the fluid purification apparatus has high adsorption ability and photocatalytic ability because the porous photocatalyst substance 11 is supported at least at the entrance 10e of the pores of the porous body 10. Therefore, the fluid purification device including the photocatalyst-supporting porous body 1 and the light source 5 for activating the photocatalytic substance 11 can efficiently remove harmful substances and contaminants contained in the fluid. Here, the fluid to which the fluid purification device according to the present invention is applied is not particularly limited, but is preferably air or water from the viewpoint of high purification efficiency.

[Photocatalyst-supported porous body]
Here, with reference to FIG. 27, in the photocatalyst-supporting porous body 1 used in the fluid purification apparatus, the porous photocatalytic substance 11 is supported at least at the inlet portion 10e of the hole 10h of the porous body 10. .

  The porous body 10 is not particularly limited as long as it is an object having a plurality of pores and adsorbing ability, and from the viewpoint of high adsorbing ability, activated carbon, silica gel, zeolite, bentonite and the like are preferable. Here, a photocatalytic substance can be supported on at least the inlet portion 10e of the hole 10h of the two or more kinds of porous bodies 10. Usually, the pores contained in the porous body include pores of various sizes from those having a large diameter to those having a small diameter. For example, as shown in FIG. 27, generally, the activated carbon hole 10h has macropores having a pore diameter of 50 nm or more (this corresponds to the inlet portion 10e of the hole), intermediate holes 10f having a pore diameter of 2 nm to 50 nm, and a pore diameter of 2 nm. It is assumed that the following micropores 10g exist. Here, the activated carbon for gas adsorption has a pore size of 10 g of micropores of 1.4 nm to 1.8 nm, and the activated carbon for liquid adsorption has a pore size of 10 g of micropores of 1.8 nm to 3.2 nm. Preferably used. The pore diameter of the porous body can be measured using SEM (scanning electron microscope) or TEM (transmission electron microscope).

  That is, in the photocatalyst-supporting porous body 1, the porous photocatalytic substance 11 is supported in macropores corresponding to at least the inlet portion 10 e of the hole 10 h of the porous body 10. Further, the photocatalytic substance 11 can be supported on at least a part of the surface 10s of the porous body 10 in addition to the inlet portion 10e of the hole 10h. Thus, it can be confirmed that the photocatalyst substance 11 is supported on at least the inlet portion 10e of the hole 10h of the porous body 10 by observing the photocatalyst-supporting porous body 1 with SEM or TEM. It is not clear whether or not the photocatalytic substance 11 is supported also in the intermediate hole 10f and the micropore 10g of the hole 10h, but considering the method for producing the photocatalyst-supporting porous body described below, the intermediate hole 10f and It seems that the micropores 10g are not supported.

[Shape of photocatalyst-supported porous body]
The shape of the photocatalyst-supporting porous body 1 is not particularly limited, but may include any shape that increases the surface area from the viewpoint of increasing adsorption capacity and photocatalytic capacity, for example, any of powder, granular, honeycomb, and brush. preferable. Here, although it is difficult to clearly distinguish the powder form from the granular form, for example, a granular porous body can be obtained by aggregating the powdered porous bodies. Also, a honeycomb or brush-like porous body can be obtained by collecting powdery or granular porous bodies.

  1-10, since the powdery photocatalyst carrying porous body 1 has a small size and a large surface area, it has high photocatalytic performance. The size of the powdery photocatalyst-supporting porous body is preferably small from the viewpoint of enhancing the adsorption ability and the photocatalytic ability, and is preferably large from the viewpoint of enhancing workability. Specifically, the diameter of the powder is preferably about 10 μm to 0.15 mm. Such a powdery photocatalyst-supporting porous body 1 is not particularly limited and can be used by being wrapped in a mesh or the like smaller than the diameter of the powder. However, from the viewpoint of being easily fixed in the apparatus and adjusting the fluid pressure loss. Preferably, it is used by being spotted on the sheet 71 or the like.

  Referring to FIGS. 18 to 22, the granular photocatalyst-supporting porous body 1 has the second smallest size and the largest surface area after the powdery photocatalyst-supporting porous body, and has high workability and few restrictions due to the type of fluid. . For this reason, the granular photocatalyst-supported porous body is inferior in fluid purification capacity compared to the powdery photocatalyst-supported porous body having the same mass, but the degree of freedom in designing the purification device is high, and purification of a large volume of fluid It is easy to cope with. The shape of the granular photocatalyst-supporting porous body is not particularly limited, and examples thereof include a cylindrical shape, a spherical shape, and a crushed granular shape. The size of the granular photocatalyst-supporting porous body is not particularly limited, but is preferably smaller from the viewpoint of improving the adsorption capacity and photocatalytic capacity, and larger from the viewpoint of improving workability. Specifically, the size of the granular photocatalyst-supporting porous body 1 is 1 mm to 20 mm in diameter and preferably 1 mm to 30 mm in the case of a cylindrical shape, and 0.5 mm to 20 mm in the case of a spherical shape. In the case of crushed particles, the particle size is preferably 0.15 mm to 1 mm.

  In the present application, unless otherwise specified, the particle diameter, the diameter, and the diameter of the particle are average values of the particle and a plurality of particles. Here, the particle diameter, the diameter, and the diameter of the particles can be measured by SEM, TEM, optical microscope, or visual observation according to the size. In addition, the particle diameter, diameter, diameter, and distribution of the particles in a slurry state can be measured with a particle size distribution measuring apparatus using a laser diffraction method or a laser scattering method.

  Referring to FIGS. 11 to 15, the honeycomb-shaped photocatalyst-supporting porous body 1 is less restricted by the type of fluid than the powdered and granular photocatalyst-supporting porous body, and the honeycomb opening surface 1k is determined by the design of the light source. , 1k ′, light can be applied to the entire surface of the honeycomb surface 1h.

  Referring to FIGS. 16 and 17, the brush-like photocatalyst-supporting porous body 1 is less restricted by the type of fluid than the honeycomb-like photocatalyst-supporting porous body, and the photocatalyst-supporting porous body is designed by the design of the light source. It becomes possible to shine light on the entire side of the brush hair.

[Photocatalytic substance]
The photocatalytic substance 11 is not particularly limited as long as it is a substance having a photocatalytic ability, but from the viewpoint of high photocatalytic ability, preferred are titanium oxide, zinc oxide and the like, and particularly preferred is titanium oxide. The fact that the photocatalytic substance 11 supported on at least the inlet portion 10e of the pore 10h of the porous body 10 is porous is difficult to observe directly because its pore diameter is extremely small, but will be described later. Further, the photocatalyst-supporting porous body 1 is supported because it has an extremely high adsorption ability and decomposition ability for harmful substances and pollutants.

  Titanium oxide as a photocatalytic substance has a band gap energy of 3.2 eV. Therefore, it absorbs light having a wavelength of 400 nm or less (theoretically 390 nm or less) to obtain photocatalytic ability. From the viewpoint of absorbing visible light of 400 nm to 700 nm to obtain photocatalytic ability, titanium, atoms such as carbon, nitrogen, sulfur, iron, copper, vanadium, ruthenium, molybdenum, niobium, tantalum, and platinum are used as dopants. It is preferable to add.

[Method for producing photocatalyst-supported porous material]
The production method of the photocatalyst-supporting porous body 1 is not particularly limited, and examples thereof include the following methods. That is, first, the porous body 10 is impregnated with a metal hydroxide-containing slurry in which a metal hydroxide corresponding to a metal oxide that is a photocatalytic substance is suspended in alcohols or water, and then hydrogen peroxide water is added. The metal hydroxide and hydrogen peroxide solution are reacted to form a metal oxide, and then the alcohol or water in the slurry is dried. By this method, the photocatalyst-supporting porous body 1 in which the porous photocatalytic substance 11 is supported on at least the inlet portion 10e of the hole 10h of the porous body 10 is obtained. The hydrogen peroxide solution is added at a temperature at which it reacts with the metal hydroxide by self-heating (this reaction is hereinafter referred to as self-heating reaction) (this temperature is hereinafter referred to as self-heating temperature). In the photocatalyst-supporting porous body 1 produced by such a method, the photocatalyst material 11 is supported without using a binder, and the supported photocatalyst material 11 is porous. Have

  More specifically, the photocatalyst-supporting porous material 1 is manufactured as follows. First, a metal hydroxide slurry is prepared by suspending a metal hydroxide in alcohols or water. Here, as the suspending medium, alcohol is preferably used in the case of activated carbon, and water is preferably used in the case of silica gel or zeolite, from the viewpoint of enhancing the wettability with the porous body 10 to be supported. The molar ratio of the metal hydroxide to the suspending medium (alcohol or water) is preferably 1 to 10 mol of the suspending medium with respect to 1 mol of the metal hydroxide.

  Next, the porous body 10 is impregnated with a metal hydroxide slurry. Due to the adsorptive power of the porous body 10, the metal hydroxide slurry enters at least the inlet portion 10 e of the pore 10 h of the porous body 10. Here, in the metal hydroxide slurry, since the particle size (secondary particle size) of the aggregated particles (secondary particles) of the metal hydroxide contained therein is about 20 nm to 20 μm, the intermediate hole 10f of the hole 10h and It is considered difficult to enter up to 10 g of micropores. The amount of metal hydroxide impregnated into the porous body 10 is preferably 1 to 50 g of metal in the metal hydroxide with respect to 100 g of the porous body.

  Next, the porous body 10 impregnated with the metal hydroxide is brought into contact with the hydrogen peroxide solution, whereby the metal hydroxide and hydrogen peroxide react with each other by self-heating to generate a metal oxide. Here, the self-heating start temperature when contacting the hydrogen peroxide solution is determined by the type of metal hydroxide and the concentration of the hydrogen peroxide solution. That is, a self-exothermic reaction that spontaneously starts the reaction when 5 g of hydrogen peroxide solution of 35% by mass is brought into contact with 1 g of metal hydroxide impregnated in a specific porous body and the temperature is gradually raised. The starting temperature can be found. For example, in the case of supporting titanium oxide as a photocatalytic substance, when 35% by mass of hydrogen peroxide water is used, the self-exothermic reaction temperature is about 27 ° C. to 42 ° C., and titanium hydroxide and hydrogen peroxide are within this temperature range. It is preferable to contact water.

  Next, the alcohol or water, which is the suspending medium contained in the porous body 10 impregnated with the metal oxide, is dried to make the porous body 10 porous at least in the inlet portion 10e of the hole 10h. It is possible to carry a metal oxide which is a photocatalytic substance. Here, the drying temperature of the alcohol or water is not particularly limited and can be room temperature (for example, 25 ° C.), but is preferably 100 ° C. to 500 ° C. in order to shorten the drying time.

  In the above production method, in order to make the metal oxide (photocatalytic substance) supported on the porous body porous, the suspension medium remaining after the reaction between the metal hydroxide and hydrogen peroxide is reduced. In addition, it is preferable to adjust the amount of the suspension medium, the amount and concentration of the hydrogen peroxide solution. To make the photocatalytic substance porous, the amount of alcohol or water as the suspension medium is adjusted to 1 to 5 moles per mole of metal in the metal hydroxide. It is preferable to do this.

  In addition, since alcohols that are suspending media have different self-exothermic reaction temperatures depending on the type of metal, methanol, ethanol, propanol, butanol, etc. having a low boiling point are preferable for metals with low self-exothermic reaction temperatures. The high metal is preferably an alcohol having a high boiling point. As the suspending medium, water, alcohols, glycols and the like can be used.

  Moreover, it can replace with a metal hydroxide slurry, and can also use the metal oxide-metal oxide mixed slurry which suspended the mixture of the metal hydroxide and the metal oxide corresponding to it in alcohols or water. By mixing the metal oxide, the porous porosity, pore diameter, etc. of the supported metal oxide can be prepared. Further, when a titanium hydroxide slurry is used as the metal hydroxide slurry, anatase-type titanium oxide can be obtained. By adding rutile-type and / or brookite-type titanium oxide to the slurry in advance, Titanium oxide containing a rutile type and / or a brookite type in addition to the anatase type is obtained.

  Further, the porous body on which the titanium oxide to which the dopant is added is supported is not particularly limited. For example, a compound containing a dopant added to a titanium hydroxide slurry (metal hydroxide slurry) is added, and It is obtained by carrying on a porous body by the same method.

[light source]
The light source is not particularly limited as long as it emits light that activates the photocatalytic substance. From this viewpoint, when the photocatalytic substance is titanium oxide, it is preferable to use a light emitting element having an emission peak wavelength of 400 nm or less as a light source. In addition, by using titanium oxide to which atoms such as carbon, nitrogen, sulfur, iron, copper, vanadium, ruthenium, molybdenum, niobium, tantalum, and platinum are added as dopants, a light emitting element having an emission peak wavelength of 700 nm or less Can be used as a light source.

  The light source includes any of a point light source, a line light source, and a surface light source. The point light source shown as the light source 5 in FIGS. 1 to 3, 11, 18, 19, 23 to 25, and 26 (a) includes, for example, an LED (light emitting diode) and an SMD (light emitting bare chip). LD (laser diode), light bulb, and the like. LEDs, SMDs, and LDs are small, have high light conversion efficiency, low heat generation, and long life. Light bulbs are cheap.

  In addition, examples of the linear light source shown as the light source 5 in FIGS. 4, 5, 12, and 20 include black light, chemical light, and fluorescent lamp. These line light sources have high light intensity.

  Further, the surface light source shown as the light source 5 in FIGS. 6 to 10, 13 to 15, 16, 17, 21, 22, and 26 (b) is the original light source 4 and the light guide plate 7. And the light diffusing material 8. Here, the light guide plate 7 shown in FIGS. 6 to 8, 13, 16, 17, 21, and 26 (b) is uniform from the main surface 7 m with light taken from the end surface 7 s. It refers to a plate that emits light, and includes, for example, an acrylic plate in which the other main surface 7n is specially processed (for example, uneven processing such as embossing and texture processing). In the light guide plate 7, the light incident from the end surface 7 s is scattered by the other specially processed main surface 7 n and becomes diffused light and emits light from the one main surface 7 m. Further, the light diffusing material 8 shown in FIGS. 9, 10, 14, 15, 17, and 22 is uniform in the light taken from the main surface 8n on the original light source 4 side from the main surface 8m on the opposite side. A material that emits surface light, and includes a woven fabric, a non-woven fabric or a porous body of a metal material or a non-metal material, a light diffusion plate, and the like. Here, the metal material preferably has a high light reflectance, and the non-metal material preferably does not absorb light. In particular, preferred examples of the material that scatters incident light include aluminum fibers, stainless fibers, and foamed aluminum. In the light diffusing material 8, light incident from the main surface 8 n on the original light source 4 side is scattered by the light diffusing material and becomes diffused light and emits surface light from the main surface 8 m on the opposite side. Accordingly, since the diffused light emitted from the surface light source including any one of the original light source 4 and the light guide plate 7 and the light diffusing material 8 is scattered light, the direction of the light is not one direction but the light is mainly emitted. It is an arbitrary direction penetrating the surfaces 7m and 8m. For this reason, the light from the surface light source reaches not only the outer surface (outer surface) but also the inner surface (inner surface) of the photocatalyst-supporting porous body.

  In addition, the light source can activate the photocatalytic substance to exhibit a photocatalytic action regardless of whether it is continuous light emission or pulse light emission. This is because many molecules in the photocatalytic substance are activated by receiving light once.

  In addition, with reference to FIG. 26, in order to restrict | limit the direction of the light emitted from a light source, the reflecting plate 9 is used suitably. As shown in FIG. 26 (a), by disposing the reflector 9 on the light source 5 such as a point light source or a line light source, the light of the light source 5 is directed in a certain range direction (direction penetrating the main surface 5m that emits light). Can be limited. When the light source 5 is a surface light source, as shown in FIG. 26B, a reflecting plate 9 is disposed on a point light source or a line light source included in the original light source 4, and the specially processed main surface 7n of the light guide plate 7 is provided. By disposing the reflecting plate 9 on the top, it is possible to emit light more effectively in a plane direction within a certain range. Here, with reference to FIGS. 26A and 26B, in the case where the light source 5 or the original light source 4 is a point light source or a line light source, from the viewpoint of effectively limiting the light of the light source to a certain range direction, The angle θ between the inner surface of the end portion of the reflecting plate 9 and the main surfaces 5m and 4m that emit light is preferably 35 ° to 55 °, more preferably 40 ° to 50 °, and most preferably 45 °.

[Light source protection]
The light source used in the fluid purification apparatus is isolated and protected from the fluid by a light transmissive material in order to prevent contamination by harmful substances or pollutants contained in the fluid and to prevent deterioration of the fluid due to heat. It is preferable. Referring to FIGS. 23 to 25, for example, light transmissive material 6 for isolating light source 5 from the fluid flowing in the direction of arrow F includes light transmissive coating material 6 c and light transmissive sheet 6 p. . That is, the light source 5 is preferably isolated from the fluid by at least one of the light transmissive coating material 6c and the light transmissive sheet 6p, which are light transmissive materials.

  Referring to FIG. 23, light source 5 fixed on lower plate 73 is isolated from a fluid by being covered with light-transmitting coating material 6c. The material for forming such a light-transmitting coating material is not particularly limited. However, polyurethane resin, acrylic resin (especially PMMA) is preferred from the viewpoint of high light transmittance and high durability against harmful substances or pollutants contained in the fluid. (Polymethyl methacrylate resin), silicone resin, fluorine resin, fluorine graft resin and the like.

  Referring to FIG. 24, the light source 5 fixed on the lower plate 73 is isolated from the fluid by being covered with the light transmissive sheet 6p. The material for forming such a light transmissive sheet is not particularly limited, but PMMA resin, PC (polycarbonate) resin, polyethylene glucone are used from the viewpoint of high light transmittance and high durability against harmful substances or pollutants contained in the fluid. Examples thereof include a rubiscarbonate resin, an alicyclic polyolefin resin, an alicyclic acrylic resin, a fluorine-based amorphous resin, a polyethersulfone resin, and a polyarylate resin. Furthermore, a light transmissive polyamide resin, an alicyclic polyamide resin, a fluorine polyimide resin, or the like can also be used. Here, since the amorphous resin generally has lower chemical resistance and scratch resistance than the crystalline resin, when an amorphous resin sheet is used as the light transmissive sheet, as shown in FIG. Further, it is preferable to coat the light transmissive sheet 6p with the light transmissive coating material 6c.

  Referring to FIG. 25, the light source 5 fixed on the lower plate 73 is covered with the light transmissive coating material 6c and further covered with the light transmissive sheet 6p, thereby being isolated from the fluid F. FIG. 25 shows an embodiment in which the light transmissive sheet 6p is coated with the light transmissive coating material 6c. However, the light transmissive sheet 6p is not coated with the light transmissive coating material 6c. It can also be used.

  The structure of the embodiment of the fluid purification apparatus according to the present invention will be described more specifically below.

(Embodiment 1)
In one embodiment of the fluid purification apparatus according to the present invention, referring to FIGS. 1 and 27, a porous photocatalytic substance 11 is supported on at least an inlet portion 10e of a hole 10h of a porous body 10. The photocatalyst-supporting porous body 1 and one or more light sources 5 that emit light that activates the photocatalytic substance 11 are included. Here, it further includes a sheet 71 for spotting one or more, preferably a plurality of photocatalyst-supporting porous bodies 1, and the light source 5 is a point light source, and the photocatalyst-supporting porous body 1 spotted on the sheet 71. It is arranged to face. For this reason, the light irradiation efficiency to the photocatalyst carrying porous 1 is high. Further, the fluid flows in a space between the light source 5 and the photocatalyst-supporting porous body 1 spotted on the sheet 71. For this reason, although fluid resistance is low, if the flow rate is increased, the removal efficiency of harmful substances and pollutants decreases. That is, the structure of the fluid purification device of this embodiment is suitable for a small fluid purification device. The fluid purification device of this embodiment having such a structure is also referred to as a sheet-type fluid purification device in the present application.

Specifically, referring to FIG. 1, in the sheet type fluid purification device of the present embodiment, a sheet 71 having a length L _S and a width W _S is disposed on a lower plate 73 having a length L and a width W. A plurality of photocatalyst-supporting porous bodies 1 are spotted on the sheet 71. Here, the photocatalyst-supporting porous body 1 on the sheet 71 is performed with an adhesive. Specifically, the photocatalyst-supporting porous body 1 is spotted by applying the adhesive to the sheet 71 and placing the photocatalyst-supporting porous body 1 on the half-dried sheet. The sheet 71 is not particularly limited as long as the photocatalyst-supporting porous body 1 can be spotted on the sheet 71. However, from the viewpoint of being able to spot a large amount of the photocatalyst-supporting porous body 1 with a large surface area, Nonwoven fabrics are preferably used. When the sheet 71 is a woven fabric or a non-woven fabric, the photocatalyst-supporting porous body 1 is spotted not only on the outer surface of the sheet 71 but also on the inner surface of the sheet 71 as shown in FIG. The

  The photocatalyst-supporting porous body 1 spotted on the sheet 71 is preferably in the form of powder, crushed particles or spheres, and more preferably in the form of powder. The diameter of the powder or particles of the photocatalyst-supporting porous body 1 is preferably 10 μm to 5 mm, and more preferably 10 μm to 0.15 mm. The smaller the diameter of the photocatalyst-supporting porous body 1, the better the adsorption capacity and the photocatalytic capacity, and the larger the diameter, the lower the adsorption capacity and the photocatalytic capacity.

Moreover, are arranged at a pitch P _W in the width W direction length L a plurality of points on the upper plate 75 of the width W at the light source pitch (light source 5) is a length L direction P _L. In the lower plate 73 and the upper plate 75, the surface formed by the plurality of photocatalyst-supporting porous bodies 1 spotted on the sheet 71 and the surface formed by the plurality of point light sources (light sources 5) are separated by a distance H. Are fixed in parallel by a support 77 so as to face each other. In the fluid purification device shown in FIG. 1 (a), four side surfaces are open, and fluid can freely enter and exit from these side surfaces.

  When two side surfaces S parallel to the length L direction of the fluid purification device shown in FIG. 1A are covered with side plates, the open surface becomes two side surfaces perpendicular to the length L direction, and from one side surface to the other side. The fluid can be allowed to flow on the side surface (in the direction of arrow F in FIG. 2A).

  In the sheet type fluid purification device of the present embodiment, referring to FIG. 2, the sheet 71 on which the photocatalyst-supporting porous body 1 is spotted and the fixing frame 74 for fixing the light source 5 are combined to spot on the sheet. A plurality of spatial regions having the plurality of photocatalyst-supporting porous bodies 1 and the plurality of point light sources (light sources 5) arranged to face the photocatalyst-supporting porous body 1 can be formed. When the fluid flows through the plurality of spatial regions, the removal efficiency of harmful substances and pollutants in the fluid is increased. Such a fluid purification device is also referred to as a multi-sheet type fluid purification device in the present application.

In the sheet-type fluid purification apparatus of this embodiment, referring to FIG. 3, a turbulent flow generator 79 is disposed at the fluid inlet, thereby generating turbulent flows F ₁ , F ₂ , and F ₃ . Therefore, the flow resistance is increased, but the amount of fluid contacting the photocatalyst-supporting porous body 1 can be increased to increase the removal efficiency of harmful substances and pollutants in the fluid. Such a fluid purification device is also referred to as a turbulent sheet type fluid purification device in the present application.

(Embodiment 2)
Another embodiment of the fluid purifying apparatus according to the present invention has the same structure as that of the first embodiment except that the light source 5 is a line light source with reference to FIG.

  That is, the sheet type fluid purification apparatus of the present embodiment, specifically, with reference to FIG. 4, a sheet 71 having a length L and a width W on a lower plate having a length L and a width W of the fixed frame 74. Are arranged, and one or more, preferably a plurality of photocatalyst-supporting porous bodies 1 are spotted on the sheet 71. The method for spotting the photocatalyst-supporting porous body 1 on the sheet 71 is the same as in the first embodiment. As in the first embodiment, the photocatalyst-supporting porous body 1 spotted on the sheet 71 is preferably in the form of powder, crushed particles or spheres, and more preferably in the form of powder. The diameter of the powder or particles of the photocatalyst-supporting porous body 1 is preferably 10 μm to 5 mm, and more preferably 10 μm to 0.15 mm. The smaller the diameter of the photocatalyst-supporting porous body 1, the better the adsorption capacity and the photocatalytic capacity, and the larger the diameter, the lower the adsorption capacity and the photocatalytic capacity.

In addition, a plurality of line light sources (light sources 5) are arranged on the upper plate having the length L of the fixed frame 74 and the width of the upper plate by matching the longitudinal direction of the line light source with the length L direction of the upper plate. They are arranged at a pitch P _W in the W direction. Here, a surface formed by the photocatalyst-supporting porous body 1 spotted on the sheet 71 and a surface formed by a plurality of line light sources (light sources 5) are opposed to each other by a distance H. In the fluid purification device of the present embodiment, the fluid flows in the direction of the length L of the fixed frame 74 (the direction of arrow F in FIG. 4).

  In the sheet type fluid purification device of the present embodiment, referring to FIG. 5, by combining a fixed frame 74 and a linear light source (light source 5) for fixing the sheet 71 on which the photocatalyst-supporting porous body 1 is spotted, A plurality of spatial regions having a plurality of photocatalyst-carrying porous bodies 1 spotted on the sheet 71 and a plurality of line light sources (light sources 5) arranged opposite to the porous bodies 1 can be formed. When the fluid flows through the plurality of spatial regions, the removal efficiency of harmful substances and pollutants in the fluid is increased. Also in the sheet type fluid purification device of this embodiment, similarly to the sheet type fluid purification device of Embodiment 1, a turbulent flow generator is provided at the fluid inflow inlet to generate turbulent flow. The removal efficiency of harmful substances and pollutants can be increased.

(Embodiment 3)
Still another embodiment of the fluid purification apparatus according to the present invention is described with reference to FIG. 6 in which the light source 5 is a surface light source, and the upper and lower positions of the sheet and the light source on which the photocatalyst-carrying porous body is spotted. The structure is the same as that of the first embodiment except that the relationship is reversed.

  That is, in the sheet type fluid purification device of the present embodiment, specifically, referring to FIG. 6, a sheet 71 having a length L and a width W is formed on an upper plate having a length L and a width W of the fixed frame 74. One or more, preferably a plurality of photocatalyst-supporting porous bodies 1 are spotted on the sheet 71. The method for spotting the photocatalyst-supporting porous body 1 on the sheet 71 is the same as in the first embodiment. As in the first embodiment, the photocatalyst-supporting porous body 1 spotted on the sheet 71 is preferably in the form of powder, crushed particles or spheres, and more preferably in the form of powder. The diameter of the powder or particles of the photocatalyst-supporting porous body 1 is preferably 10 μm to 5 mm, and more preferably 10 μm to 0.15 mm. The smaller the diameter of the photocatalyst-supporting porous body 1, the better the adsorption capacity and the photocatalytic capacity, and the larger the diameter, the lower the adsorption capacity and the photocatalytic capacity.

  A surface light source (light source 5) is disposed on the lower plate of the fixed frame 74. The surface light source (light source 5) of the present embodiment includes the original light source 4 and a light guide plate 7 having a main surface 7m having a length L and a width W, and light that enters the light guide plate 7 from the light exit surface 4m of the original light source 4. Is scattered in the light guide plate 7 and diffused light is emitted from its main surface 7m. Here, the surface formed by the plurality of photocatalyst-supporting porous bodies 1 spotted on the sheet 71 and the main surface 7m (light-emitting surface) of the surface light source (light source 5) face each other at a distance H. . In the fluid purification device of the present embodiment, the fluid flows in the length L direction of the fixed frame 74 (the direction of arrow F in FIG. 6).

  In the sheet-type fluid purification device of the present embodiment, as in the sheet-type fluid purification device of Embodiment 1, a sheet is obtained by combining a fixed frame for fixing a sheet on which a photocatalyst-carrying porous body is spotted and a surface light source. A plurality of spatial regions having a plurality of photocatalyst-supporting porous bodies 1 spotted on the surface and a surface light source disposed facing the photocatalyst-supporting porous body 1 can be formed. When the fluid flows through the plurality of spatial regions, the removal efficiency of harmful substances and pollutants in the fluid is increased. Also in the sheet type fluid purification device of this embodiment, similarly to the sheet type fluid purification device of Embodiment 1, a turbulent flow generator is provided at the fluid inflow inlet to generate turbulent flow. The removal efficiency of harmful substances and pollutants can be increased.

(Embodiment 4)
Still another embodiment of the fluid purification apparatus according to the present invention is described with reference to FIG. 7, except that the sheet 71 on which the photocatalytic porous body 1 is spotted is disposed on the main surface 7m of the surface light source. The structure is the same as that of the third embodiment.

  That is, in the sheet type fluid purification device of the present embodiment, specifically, referring to FIG. 7, the surface light source (light source 5) is disposed on the lower plate of the fixed frame 74. The surface light source (light source 5) includes an original light source 4 and a light guide plate 7 having a main surface 7m having a length L and a width W, and light entering the light guide plate 7 from the light exit surface 4m of the original light source 4 is guided by the light guide plate. 7 is scattered and diffused light is emitted from the main surface 7m.

  A sheet 71 having a length L and a width W is disposed on a main surface 7m of a surface light source (light source 5), and one or more, preferably a plurality of photocatalyst-supporting porous bodies 1 are spotted on the sheet 71. The method for spotting the photocatalyst-supporting porous body 1 on the upper plate of the fixed frame 74 and the sheet 71 is the same as in the first embodiment. As in the first embodiment, the photocatalyst-supporting porous body 1 spotted on the sheet 71 is preferably in the form of powder, crushed particles or spheres, and more preferably in the form of powder. The diameter of the powder or particles of the photocatalyst-supporting porous body 1 is preferably 10 μm to 5 mm, and more preferably 10 μm to 0.15 mm. The smaller the diameter of the photocatalyst-supporting porous body 1, the better the adsorption capacity and the photocatalytic capacity, and the larger the diameter, the lower the adsorption capacity and the photocatalytic capacity.

The diffused light emitted from the main surface 7m of the surface light source 5 passes through the sheet 71, hits the photocatalyst-supporting porous body 1 spotted on the sheet 71, and exhibits photocatalytic ability. In order for the sheet type fluid purification device of the present embodiment to have a sufficient photocatalytic capability, it is necessary that the photocatalyst-carrying porous body 1 carried on the sheet 71 is sufficiently exposed to light. That is, the sheet needs to have a material and a shape that allow light to easily pass through. From such a viewpoint, the sheet is preferably a transparent or porous material and has a small thickness. For example, the sheet 71 is preferably a polyethylene non-woven fabric, a polyurethane non-woven fabric, etc., and the void ratio (referring to the volume percentage of the void relative to the whole sheet, hereinafter the same) is preferably 50% to 99% by volume, more preferably 70% to 99% by volume. 90% by volume to 99% by volume is more preferable, and the thickness T _S is preferably 200 mm or less, and more preferably 50 mm or less.

  Further, the surface formed by the plurality of photocatalyst-supporting porous bodies 1 spotted on the sheet 71 and the upper plate of the fixed frame 74 are separated by a distance H. In the fluid purification device of the present embodiment, the fluid flows in the direction of the length L of the fixed frame 74 (the direction of arrow F in FIG. 7).

  In the sheet type fluid purification device of the present embodiment, referring to FIG. 8, a surface light source including a plurality of light guide plates 7, a sheet 71 on which a plurality of photocatalyst-supporting porous bodies 1 are spotted, and a fixed frame 74 are combined. Thus, a plurality of spatial regions having a plurality of photocatalyst-supporting porous bodies 1 spotted on a sheet disposed on a surface light source can be formed. When the fluid flows through the plurality of spatial regions, the removal efficiency of harmful substances and pollutants in the fluid is increased. Also in the sheet type fluid purification device of this embodiment, similarly to the sheet type fluid purification device of Embodiment 1, a turbulent flow generator is provided at the fluid inflow inlet to generate turbulent flow. The removal efficiency of harmful substances and pollutants can be increased. In FIG. 8, since the reflection plate 9 is disposed between the two light guide plates 7, diffused light is efficiently emitted from the main surface 7 m of each light guide plate 7.

(Embodiment 5)
Still another embodiment of the fluid purification apparatus according to the present invention is described with reference to FIGS. 9 and 27. A porous photocatalytic substance 11 is supported on at least an inlet portion 10e of a porous body 10. It includes one or more photocatalyst-supporting porous bodies 1 and one or more light sources 5 that emit light that activates the photocatalytic substance 11. Here, the sheet 71 for spotting the photocatalyst-supporting porous body 1 is further included, the light source 5 includes a surface light source, and the sheet 71 on which the photocatalyst porous body 1 is spotted is on the main surface 8m of the surface light source. Is arranged. Further, a sheet 71 on which the surface light source (light source 5) and the photocatalyst-supporting porous body 1 are spotted is disposed so that the fluid penetrates the main surface 8m of the surface light source (light source 5).

That is, in the sheet type fluid purification apparatus of the present embodiment, specifically, referring to FIG. 9, the sheet 71 in which the photocatalyst-supporting porous material 1 is spotted on the main surface 8m of the surface light source (light source 5) is provided. Has been placed. Such a surface light source (light source 5) includes an original light source 4 and a light diffusing material 8, and the original light source 4 is disposed on one main surface 8 n of the light diffusing material 8. Here, the original light source 4 includes one or more point light sources. The light that has entered the light diffusing material 8 from the light exit surface 4 m of the original light source 4 through one main surface 8 n of the light diffusing material 8 is scattered by the light diffusing material 8, and the other main surface 8 m of the light diffusing material 8. As diffuse light. In the surface light source (light source 5), from the viewpoint of obtaining sufficient diffused light by sufficiently scattering the light of the original light source 4, the light diffusing material 8 has a porosity of preferably 50% by volume to 90% by volume, and more preferably 65% by volume. 75 volume% is more preferable, and the thickness T _L is preferably 10 mm or more, and more preferably 25 mm or more.

The diffused light emitted from the main surface 8 m of the surface light source 5 passes through the sheet 71, hits the photocatalyst-supporting porous body 1 spotted on the sheet 71, and exhibits photocatalytic ability. In order for the sheet type fluid purification device of the present embodiment to have a sufficient photocatalytic capability, it is necessary that the photocatalyst-carrying porous body 1 carried on the sheet 71 is sufficiently exposed to light. That is, the sheet needs to have a material and a shape that allow light to easily pass through. In addition, the sheet 71 on which the photocatalyst-supporting porous body 1 is spotted needs to have a form that allows fluid to pass through. From these viewpoints, the sheet is a porous material having air permeability, and is preferably transparent and has a small thickness. For example, the sheet 71 is preferably a polyethylene non-woven fabric or a polyurethane non-woven fabric, and the porosity is preferably 50% by volume to 99% by volume, more preferably 70% by volume to 99% by volume, and the thickness T _S is preferably 200 mm or less and preferably 50 mm or less. More preferred.

  That is, in the sheet-type fluid porous body of the present embodiment, both the surface light source (light source 5) and the photocatalyst-supporting porous body 1 allow light and fluid to pass through. It is designed to be opposite (fluid flows in the direction of arrow F in FIG. 9), and the light emission direction and the fluid flowing direction are the same (fluid flows in the direction of arrow F ′ in FIG. 9). The degree of freedom of design is increased.

(Embodiment 6)
Still another embodiment of the fluid purification apparatus according to the present invention is described in Embodiment 5 (FIG. 9) with reference to FIG. 10, except that the original light source 4 included in the surface light source (light source 5) includes a linear light source. Has the same structure. Therefore, the sheet-type fluid purification device of this embodiment has the same characteristics as the sheet-type fluid purification device of Embodiment 5, and both the surface light source (light source 5) and the photocatalyst-supporting porous body 1 are light and fluid. Since the light exit direction and the fluid flow direction are opposite (fluid flows in the direction of arrow F in FIG. 10), the light exit direction and the fluid flow direction are the same. (Fluid flows in the direction of arrow F ′ in FIG. 10), and the degree of freedom in design is increased.

  In addition, in the sheet-type fluid purification apparatuses of Embodiments 1 to 6, the surface light source is most preferable from the viewpoint of better illuminating the photocatalyst-carrying porous body spotted on the sheet, and then a plurality of point light sources A plurality of line light sources are preferred.

(Embodiment 7)
Still another embodiment of the fluid purifying apparatus according to the present invention is described with reference to FIGS. 11 and 27 in which a porous photocatalytic substance 11 is supported on at least an inlet portion 10e of a porous body 10. It includes one or more photocatalyst-supporting porous bodies 1 and one or more light sources 5 that emit light that activates the photocatalytic substance 11. Here, the photocatalyst-supporting porous body 1 has a honeycomb shape, and the light source 5 is disposed so as to face the honeycomb opening surfaces 1k and 1k ′ of the photocatalyst-supporting porous body 1. The fluid purification device having such a structure is also referred to as a honeycomb type fluid purification device in the present application.

That is, the honeycomb type fluid purification device of the present embodiment is specifically opposed to each of the honeycomb opening surfaces 1k and 1k ′ on both sides of the honeycomb-like photocatalyst-supporting porous body 1 with reference to FIG. One or more point light sources (light sources 5) are arranged. The fluid flows in the direction from the one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ (the direction of arrow F in FIG. 11). From the viewpoint of allowing the light from the point light source (light source 5) to strike the entire surface of the honeycomb surface 1h through the honeycomb opening surfaces 1k and 1k 'of the photocatalyst-supporting porous body 1, the honeycomb mesh on the honeycomb opening surfaces 1k and 1k' The mesh size is preferably 4 mesh to 1000 mesh, and practically 100 mesh to 400 mesh is preferable. Here, the mesh refers to the number of honeycombs per inch. Further, the length L _H of the honeycomb surface 1h is preferably 500 mm or less, more preferably 100 mm or less, and preferably a plurality of point light sources, and the pitches P _W1 and P _W2 of the point light sources (light sources 5) depend on the honeycomb grain roughness. The distance H _H between the surface formed by a plurality of point light sources and the honeycomb opening surfaces 1k, 1k ′ is preferably 30 mm to 120 mm, and more preferably 40 mm to 80 mm.

  In the present embodiment, the point light source (light source 5) is disposed opposite to the honeycomb opening surfaces 1k and 1k ′ on both sides of the honeycomb-like photocatalyst-supporting porous body 1, but either one of the honeycomb opening surfaces 1k is disposed. Alternatively, a point light source can be arranged to face 1k ′ (not shown). However, from the viewpoint of applying light to the entire surface of the honeycomb surface 1h of the photocatalyst-supporting porous body 1, point light sources (light sources 5) are arranged facing the honeycomb opening surfaces 1k and 1k ′ on both sides of the photocatalyst-supporting porous body 1. It is preferable.

(Embodiment 8)
Still another embodiment of the fluid purification apparatus according to the present invention has the same structure as that of the seventh embodiment (FIG. 11) except that the light source 5 is a line light source with reference to FIG.

That is, the honeycomb type fluid purification device of the present embodiment is specifically opposed to each of the honeycomb opening surfaces 1k and 1k ′ on both sides of the honeycomb-like photocatalyst-supporting porous body 1 with reference to FIG. One or more line light sources (light source 5) are arranged. The fluid flows in the direction from one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ (the direction of arrow F in FIG. 12). From the viewpoint of allowing the light from the line light source to strike the entire surface of the honeycomb surface 1h through the honeycomb opening surfaces 1k and 1k ′ of the photocatalyst-supporting porous body 1, the honeycomb mesh roughness is preferably 4 mesh to 1000 mesh and is practical. Is preferably 100 mesh to 400 mesh, the length L _H of the honeycomb surface 1h is preferably 500 mm or less, more preferably 100 mm or less, and preferably a plurality of line light sources, and the pitch of the line light sources (light source 5) is honeycomb coarseness 20 mm to 110 mm, preferably 30 mm to 70 mm or less, and the distance H _H between the surface formed by one or more line light sources and the honeycomb opening surfaces 1k and 1k ′ is preferably 20 mm to 110 mm. 70 mm or more is more preferable.

  In the present embodiment, the linear light source (light source 5) is disposed opposite to the honeycomb opening surfaces 1k and 1k ′ on both sides of the honeycomb-like photocatalyst-supporting porous body 1, but either one of the honeycomb opening surfaces 1k or 1k or It is also possible to arrange a line light source facing 1k ′ (not shown). However, from the viewpoint of applying light to the entire surface of the honeycomb surface 1 h of the photocatalyst-supporting porous body 1, a linear light source (light source 5) is disposed facing the honeycomb opening surfaces 1 k and 1 k ′ on both sides of the photocatalyst-supporting porous body 1. It is preferable.

(Embodiment 9)
Still another embodiment of the fluid purification apparatus according to the present invention has the same structure as that of the seventh embodiment (FIG. 11) except that the light source 5 is a surface light source with reference to FIG. The surface light source in the present embodiment includes the original light source 4 and the light guide plate 7.

That is, the honeycomb type fluid purification device of the present embodiment is specifically opposed to each of the honeycomb opening surfaces 1k and 1k ′ on both sides of the honeycomb-like photocatalyst-supporting porous body 1 with reference to FIG. A surface light source (light source 5) is arranged. The fluid flows in the direction from one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ (the direction of arrow F in FIG. 12). From the viewpoint of allowing the light from the surface light source to strike the entire surface of the honeycomb surface 1h through the honeycomb opening surfaces 1k and 1k ′ of the photocatalyst-supporting porous body 1, the honeycomb mesh roughness is preferably 4 mesh to 1000 mesh and is practical. Is preferably 100 mesh to 400 mesh, and the length L _H of the honeycomb surface 1h is preferably 500 mm or less, more preferably 100 mm or less, the main surface 7m (light exit surface) of the light guide plate 7 in the surface light source (light source 5) and the honeycomb opening surface. The distance H _H between 1k and 1k ′ is preferably a value (unit: mm) that is 1/400 or less of the value of the total area of the honeycomb opening surface (unit: mm ² ).

  In the present embodiment, the surface light source (light source 5) is disposed opposite to the honeycomb opening surfaces 1k and 1k ′ on both sides of the honeycomb-shaped photocatalyst-supporting porous body 1, but either one of the honeycomb opening surfaces 1k or 1k or It is also possible to arrange a surface light source facing 1k ′ (not shown). However, from the viewpoint of applying light to the entire honeycomb surface 1 h of the photocatalyst-supporting porous body 1, surface light sources (light sources 5) are arranged facing the honeycomb opening surfaces 1 k and 1 k ′ on both sides of the photocatalyst-supporting porous body 1. It is preferable.

(Embodiment 10)
Still another embodiment of the fluid purification apparatus according to the present invention is described with reference to FIGS. 14 and 27. A porous photocatalytic substance 11 is supported on at least an inlet portion 10e of a porous body 10. It includes one or more photocatalyst-supporting porous bodies 1 and one or more light sources 5 that emit light that activates the photocatalytic substance 11. Here, the photocatalyst-supporting porous body 1 has a honeycomb shape, and the light source 5 includes a surface light source. The surface light source (light source 5) faces the main surface 8m of the surface light source (light source 5) and the honeycomb opening surface 1k 'of the photocatalyst-supporting porous body 1 on the honeycomb opening surface 1k' of the photocatalyst-supporting porous body 1. Arranged. That is, the surface light source (light source 5) and the photocatalyst-supporting porous body 1 are arranged so that the fluid penetrates the main surfaces 8m and 8n of the surface light source (light source 5).

That is, in the honeycomb type fluid purification device of the present embodiment, specifically, referring to FIG. 14, the honeycomb-like photocatalyst-supporting porous material 1 is disposed on the main surface 8m of the surface light source (light source 5). . Such a surface light source (light source 5) includes an original light source 4 and a light diffusing material 8, and the original light source 4 is disposed on one main surface 8 n of the light diffusing material 8. Here, the original light source 4 includes one or more point light sources. The light that has entered the light diffusing material 8 from the light exit surface 4 m of the original light source 4 through one main surface 8 n of the light diffusing material 8 is scattered by the light diffusing material 8, and the other main surface 8 m of the light diffusing material 8. As diffuse light. In the surface light source (light source 5), from the viewpoint of obtaining sufficient diffused light by sufficiently scattering the light of the original light source 4, the porosity of the light diffusing material 8 is preferably 50% by volume to 90% by volume, and 65% by volume. -75 volume% is more preferable, and the thickness _TL is preferably 10 mm or more, and more preferably 25 mm or more.

The diffused light emitted from the main surface 8 m of the surface light source (light source 5) strikes the honeycomb surface 1 h through the honeycomb opening surface 1 k ′ of the photocatalyst-supporting porous body 1. The fluid flows in the direction from one honeycomb opening surface 1k of the photocatalyst-supporting porous body 1 to the other honeycomb opening surface 1k ′, the main surfaces 8m and 8n of the surface light source (light source 5) (the direction of arrow F in FIG. 14), Or, it flows in the direction from the main surface 8n of the surface light source (light source 5) to the main surface 8m and the honeycomb opening surfaces 1k ′ and 1k of the photocatalyst-supporting porous body 1 (direction of arrow F ′ in FIG. 14). From the viewpoint of allowing the light from the surface light source to strike the entire surface of the honeycomb surface 1h through the honeycomb opening surfaces 1k and 1k ′ of the photocatalyst-supporting porous body 1, the honeycomb mesh roughness is preferably 4 mesh to 1000 mesh and is practical. Is preferably 100 mesh to 400 mesh, and the length L _H of the honeycomb surface 1h is preferably 500 mm or less, and more preferably 100 mm or less.

  In this embodiment, the surface light source (light source 5) is arranged on the honeycomb opening surface 1k ′ of the honeycomb-shaped photocatalyst-supporting porous body 1, but the honeycomb opening surfaces on both sides of the honeycomb-shaped photocatalyst-supporting porous body 1 are arranged. It is also possible to arrange a surface light source (light source 5) on 1k and 1k ′ (not shown). From the viewpoint of applying light to the entire honeycomb surface 1 h of the photocatalyst-supporting porous body 1, it is preferable to dispose surface light sources (light sources 5) on the honeycomb opening surfaces 1 k and 1 k ′ on both sides of the photocatalyst-supporting porous body 1.

  That is, in the honeycomb type fluid porous body of the present embodiment, both the surface light source (light source 5) and the photocatalyst-supporting porous body 1 allow light and fluid to pass through, so the light exit direction and the fluid flow direction are different. It is designed to be opposite (fluid flows in the direction of arrow F in FIG. 14), and the light emission direction is the same as the flow direction of fluid (fluid flows in the direction of arrow F ′ in FIG. 14). The degree of freedom of design is increased.

(Embodiment 11)
Still another embodiment of the fluid purification apparatus according to the present invention is described with reference to FIG. 15 in Embodiment 10 (FIG. 14) except that the original light source 4 included in the surface light source (light source 5) includes a linear light source. Has the same structure. Therefore, the honeycomb type fluid purification device of this embodiment has the same characteristics as the honeycomb type fluid purification device of Embodiment 10, and both the surface light source (light source 5) and the photocatalyst-supporting porous body 1 are light and fluid. Since the light exit direction and the fluid flow direction are opposite (fluid flows in the direction of arrow F in FIG. 15), the light exit direction and the fluid flow direction are the same. (Fluid flows in the direction of arrow F ′ in FIG. 15), and the degree of freedom in design is increased.

  In the honeycomb type purification apparatuses of Embodiments 7 to 11, the light source is most preferably a surface light source from the viewpoint of better illuminating the honeycomb surface of the honeycomb-shaped photocatalyst-supporting porous body, and then a plurality of point light sources and a plurality of lines. A light source is preferred.

Embodiment 12
Still another embodiment of the fluid purifying apparatus according to the present invention is described with reference to FIGS. 16 and 27 in which a porous photocatalytic substance 11 is supported on at least an inlet portion 10e of a porous body 10. It includes one or more photocatalyst-supporting porous bodies 1 and one or more light sources 5 that emit light that activates the photocatalytic substance 11. Here, the photocatalyst-supporting porous body 1 has a brush-like shape, and the light source 5 is disposed to face the side surface of the brush bristle portion 1 a of the photocatalyst-supporting porous body 1. The fluid purification device having such a structure is also referred to as a brush-type fluid purification device in the present application.

That is, in the brush type fluid purification device of the present embodiment, specifically, referring to FIG. 16, the light source 5 is arranged on two surfaces facing the side surface of the brush bristle portion 1 a of the photocatalyst-supporting porous body 1. ing. The photocatalyst-supporting porous body 1 has a brush shape in which a plurality of brush bristle portions 1a having a diameter D and a length L are planted on the main surface of a brush base portion 1b having a width W ₁ × width W ₂ . Here, the light source 5 is not particularly limited, and a point light source, a line light source, and a surface light source can be used, but a surface light source is preferable from the viewpoint of applying light to the entire side surface of the brush bristle portion 1a. FIG. 16 shows a case where the light source 5 is a surface light source and includes the original light source 4 and the light guide plate 7. Such a surface light source has the same structure as the surface light source described in the third, fourth, and ninth embodiments. The original light source 4 is not particularly limited, and may include either a point light source or a line light source. The fluid flows in the direction from one side of the side surface of one brush bristle part 1a to the opposite side (the direction of arrow F in FIG. 16).

(Embodiment 13)
Still another embodiment of the fluid purification device according to the present invention is further described with reference to FIG. 17 in that a surface light source (light source 5) is further provided on two surfaces through which the fluid of the brush type fluid purification device (FIG. 16) of Embodiment 12 passes. Is arranged. Such a surface light source includes an original light source 4 and a light diffusing material 8. Such a surface light source has the same structure as the surface light source described in the fifth and tenth embodiments. The original light source 14 is not particularly limited, and may include either a point light source or a line light source.

  The brush type fluid purification device of this embodiment has a high photocatalytic performance and a high fluid purification performance because the light sources are arranged on the four surfaces facing the side surfaces of the brush bristle portion 1a of the photocatalyst-supporting porous body 1. .

(Embodiment 14)
In still another embodiment of the fluid purification device according to the present invention, referring to FIGS. 18 and 27, a porous photocatalytic substance 11 is supported on at least the inlet portion 10e of the hole 10h of the porous body 10. It includes a plurality of photocatalyst-supporting porous bodies 1 and one or more light sources 5 that emit light that activates the photocatalytic substance. Here, the light source 5 is disposed between the plurality of photocatalyst-supporting porous bodies 1. The fluid flows between the plurality of photocatalyst-supporting porous bodies 1. For this reason, in the photocatalyst-supporting porous body 1, the area for receiving light from the light source and the contact area between the fluid and the photocatalyst-supporting porous body 1 can be increased, and the ability to remove harmful substances and pollutants in the fluid is high. . That is, the structure of the fluid purification device of this embodiment is suitable for a large fluid purification device. The fluid purification device of this embodiment having such a structure is also referred to as a granular fluid purification device in the present application.

Specifically, with reference to FIG. 18, the granular fluid purification apparatus of the present embodiment has a first width W ₁ formed by a rectangular tubular container 50, an upper plate 54u, and a lower plate 54d, In a hexahedron having one width W ₂ and length L, a plurality of point light sources (light sources 5) are arranged with a pitch P _W1 in the first width W ₁ direction and a pitch P in the second width W ₂ direction by the wiring 52. _W2 is arranged at a pitch P _L in the length L direction. Thus, the photocatalyst-supporting porous body 1 is filled in the hexahedron so as to embed a plurality of point light sources (light sources 5) arranged in the hexahedron. In this way, each light source 5 is embedded between the plurality of photocatalyst-supporting porous bodies 1. Both the upper plate 54u and the lower plate 54d have openings, and the fluid flows in the direction from the lower plate 54d to the upper plate 54u (in the direction of arrow F in FIG. 18, hereinafter referred to as the upward direction) or from the upper plate 54u to the lower plate 54d. (In the direction of arrow F ′ in FIG. 18, hereinafter referred to as “downward direction”).

  The smaller the particle size of the photocatalyst-supporting porous body 1 filled in the hexahedron, the larger the contact area between the fluid and the photocatalyst-supporting porous body 1, the higher the removal efficiency of harmful substances and pollutants, and the higher the fluid resistance. . Further, the larger the particle size of the photocatalyst-supporting porous body 1 filled in the hexahedron, the smaller the contact area between the fluid and the photocatalyst-supporting porous body 1, the lower the removal efficiency of harmful substances and pollutants, and the lower the fluid resistance. Lower. From such a viewpoint, the size of the photocatalyst-supporting porous body 1 filled in the hexahedron is preferably 1 mm to 20 mm in diameter and 1 mm to 30 mm in height in the case of a cylinder, and 0.5 mm to 6 mm in the case of a sphere. 20 mm is preferable, and in the case of crushed particles, the particle size is preferably 0.15 mm to 1 mm.

The pitches P _W1 , P _W2 , and P _L of the light source 5 are the shape and volume of the hexahedron, the flow rate of the fluid, the intensity of the light source, the particle size of the photocatalyst-supporting porous body 1, and the photocatalyst supported on the photocatalyst-supporting porous body 1. It is suitably set depending on the amount of the substance. For example, in a hexahedron having a _first width W ₁ of 45 cm and a second width W ₂ of 35 cm, an LED which is a light source with pitches P _W1 , P _W2 and P _L are all 5 cm, and the hexahedron is arranged. A fluid purification device filled with a photocatalyst-supporting porous body 1 having a diameter of 5 mm to 20 mm and a height of 5 mm to 30 mm or a spherical shape of 5 mm to 20 mm is designed.

  FIG. 18 shows an example in which the photocatalyst-supporting porous body 1 is filled in a hexahedron. However, the three-dimensional shape in which the photocatalyst-supporting porous body 1 is filled is such that the upper plate 54u and the lower plate 54d are circular. It may be a columnar body having a shape or a polygonal shape.

  By irradiating the photocatalyst-supporting porous body 1 with light from a point light source (light source 5), the photocatalyst substance supported on the photocatalyst-supporting porous body 1 is activated, and the fluid is moved upward (in FIG. 18, the arrow F ) Or downward (direction of arrow F ′ in FIG. 18), harmful substances and pollutants in the fluid can be removed. Here, when the harmful substance and pollutant for the purpose of removal have a higher specific gravity than the fluid (for example, air or water), the residence time of the harmful substance and the pollutant is increased and the contact with the photocatalyst-supporting porous body 1 is increased. From the viewpoint of increasing the time, it is preferable to flow the fluid upward (in the direction of arrow F in FIG. 18). Further, when the harmful substance and pollutant for the purpose of removal have a specific gravity smaller than that of the fluid (for example, air or water), the residence time of the harmful substance and the pollutant is increased and the contact time with the photocatalyst-supporting porous body 1 is increased. From the viewpoint of increasing the length, it is preferable to flow the fluid downward (in the direction of arrow F ′ in FIG. 18).

(Embodiment 15)
In still another embodiment of the fluid purification apparatus according to the present invention, referring to FIG. 19, a plurality of point light sources (light sources 5) are arranged between a plurality of photocatalyst-supporting porous bodies 1 using a light source fixing plate 76. Except for this, it has the same structure as that of the fourteenth embodiment (FIG. 18). That is, in the granular fluid purification device of the present embodiment, a plurality of light source fixing plates 76 in which a plurality of point light sources (light sources 5) are fixed between a plurality of photocatalyst-supporting porous bodies 1 are arranged at a pitch P _W1 . . Here, on both main surfaces of the light source fixing plate 76, a plurality of point light sources (light sources 5) are arranged with a pitch P _L in the length L direction and a pitch P _W2 (not shown) in the width W ₂ direction. .

(Embodiment 16)
Still another embodiment of the fluid purification apparatus according to the present invention has the same structure as that of the fourteenth embodiment (FIG. 18) except that a linear light source is used as the light source 5 with reference to FIG. That is, in the granular fluid purification device of the present embodiment, a plurality of line light sources (light sources 5) are arranged between the plurality of photocatalyst-supporting porous bodies 1 so that the longitudinal direction of the line light source coincides with the length L direction of the container 50. The container 50 is arranged at a pitch P _W1 in the width W ₁ direction and at a pitch P _W2 in the width W ₂ direction of the container 50.

(Embodiment 17)
Still another embodiment of the fluid purification apparatus according to the present invention is described in Embodiment 14 (FIG. 18) except that a surface light source including the original light source 4 and the light guide plate 7 is used as the light source 5 with reference to FIG. ). That is, in the granular fluid purification apparatus of this embodiment, a plurality of pairs of surface light sources (light sources 5) are arranged at a pitch P _W1 in the width W ₁ direction of the container 50 between the plurality of photocatalyst-supporting porous bodies 1. ing. Here, the pair of surface light sources (light source 5) includes a pair of light guide plates 7 and the original light source 4 disposed on both main surfaces of the reflection plate 9. Here, the original light source 4 is not particularly limited, and may include either a point light source or a line light source. The pair of surface light sources (light sources 5) emit diffuse light from the main surfaces 7m (light exit surfaces) on both sides thereof.

(Embodiment 18)
Still another embodiment of the fluid purifying apparatus according to the present invention is described with reference to FIGS. 22 and 27, in which a porous photocatalytic substance 11 is supported on at least an inlet portion 10e of a porous body 10. It includes one or more photocatalyst-supporting porous bodies 1 and one or more light sources 5 that emit light that activates the photocatalytic substance 11. Here, the light source 5 includes a surface light source. Further, the surface light source (light source 5) and the photocatalyst-supporting porous body 1 are arranged so that the fluid penetrates the main surfaces 8m and 8n of the surface light source (light source 5).

Specifically, in the granular fluid purification device of the present embodiment, specifically, the surface light source (light source 5) is disposed on the upper surface 1u and the lower surface 1d of the plurality of photocatalyst-supporting porous bodies 1 filled in the container 50. ing. Such a surface light source (light source 5) includes an original light source 4 and a light diffusing material 8, and the original light source 4 is disposed on one main surface 8 n of the light diffusing material 8. Here, the original light source 4 includes one or more of a line light source and a point light source. The light that has entered the light diffusing material 8 from the light exit surface 4 m of the original light source 4 through one main surface 8 n of the light diffusing material 8 is scattered by the light diffusing material 8, and the other main surface 8 m of the light diffusing material 8. As diffuse light. In the surface light source (light source 5), the thickness T _L of the light diffusing material 8 is preferably 10 mm or more, and more preferably 25 mm or more from the viewpoint of obtaining sufficient diffused light by sufficiently scattering the light of the original light source 4.

  Thus, the diffused light emitted from the main surface 8m of the surface light source (light source 5) strikes the plurality of photocatalyst-supporting porous bodies 1 through the upper surface 1u and the lower surface 1d of the plurality of photocatalyst-supporting porous bodies 1. Here, from the viewpoint of applying the diffused light from the surface light source (light source 5) to the plurality of photocatalyst-supporting porous bodies 1, the particle diameters of the plurality of photocatalyst-supporting porous bodies 1 are as follows. The diameter is preferably 1 mm to 20 mm and the height is preferably 1 mm to 30 mm. In the case of a spherical shape, the diameter is preferably 0.5 mm to 20 mm, and in the case of crushed particles, the particle diameter is preferably 0.15 mm to 1 mm. The length L of the plurality of photocatalyst-supporting porous bodies 1 in the light direction (direction in which the directions of the diffused light are averaged) is preferably 100 mm or less, and more preferably 70 mm or less.

  On the other hand, the fluid passes between the plurality of photocatalyst-supporting porous bodies 1 from the main surfaces 8n and 8m of the surface light source 5 disposed on the lower surfaces 1d of the plurality of photocatalyst-supporting porous bodies 1 filled in the container 50, The direction of the surface light source 5 arranged on the upper surface 1u toward the main surfaces 8m and 8n (direction of arrow F in FIG. 22) or the upper surface 1u of the plurality of photocatalyst-supporting porous bodies 1 filled in the container 50. The direction from the main surfaces 8n, 8m of the surface light source 5 to the main surfaces 8m, 8n of the surface light source 5 disposed on the lower surface 1d through the space between the plurality of photocatalyst-supporting porous bodies 1 (in FIG. 22, the arrow F ′ Direction).

  That is, in the mold fluid porous body of the present embodiment, both the surface light source (light source 5) and the photocatalyst-supporting porous body 1 can pass light and fluid, so the light exit direction and the fluid flow direction are the same. It is possible to design so as to be opposite to each other, and the degree of freedom in design is increased.

[Preparation of titanium oxide-supported activated carbon A (photocatalyst-supported porous body)]
50.64 g of titanium hydroxide (Ti (OH) ₄ .2H ₂ O) fine powder having a secondary particle size of 50 nm to 100 nm and titanium oxide (TiO ₂ ) fine powder having a secondary particle size of 50 nm to 100 nm 26.62 g was mixed with 80.12 g of 2-propanol (isopropyl alcohol) with sufficient stirring to prepare a titanium hydroxide / titanium oxide mixed slurry. 49.3 g of the titanium hydroxide / titanium oxide mixed slurry was impregnated into 100 g of cylindrical activated carbon having a diameter of 5 mm and a height of 10 mm. When hydrogen peroxide solution (35% by mass) was added to this at a temperature of 30 ° C., a self-exothermic reaction occurred. After the reaction, when it was dried at 200 ° C. for 1 hour in a dryer, titanium oxide-supported activated carbon A was obtained. Since this titanium oxide-supported activated carbon A has extremely high harmful substance removal performance in Examples 1 and 2 below, it is considered that porous titanium oxide is supported at least at the inlet portion of the pores of the activated carbon. .

Example 1
In this example, toluene, which is a harmful substance in the air, was removed using activated carbon A supporting titanium oxide. A petri dish containing 1 g of the titanium oxide-supported activated carbon A and 1 liter of air were sealed in a 5-liter tetrapack. Next, after emitting light from a distance of 1 cm by 16 LEDs having an emission peak wavelength of 375 nm and an output of 0.5 mW to 1 g of titanium oxide-supported activated carbon A for 2 hours, one gas was emitted while continuing the light irradiation. Toluene gas was injected every hour so that the concentration of toluene gas in Tetra Pak was 1000 ppm by injection, and the concentration of toluene gas in Tetra Pak 30 minutes after injection of toluene-containing gas at each time was measured with a detector tube.

  Further, the toluene gas concentration in the Tetra Pak was measured in the same manner as in Example 1 except that the titanium oxide-supporting activated carbon A was not used as a blank (this is referred to as Comparative Example 1a). Further, the toluene gas concentration in the tetrapack was measured in the same manner as in Example 1 except that 1 g of columnar activated carbon having a diameter of 5 mm and a height of 10 mm was placed in the tetrapack instead of the above-described titanium oxide-supported activated carbon A. (This is referred to as Comparative Example 1b). The results are summarized in Table 1 and FIG.

  As apparent from Table 1 and FIG. 28, in the case of the blank (Comparative Example 1a) and the activated carbon (Comparative Example 1b), the toluene concentration in the Tetra Pak increased as the number of injections of toluene gas increased. In the case of supported activated carbon A (Example 1), the toluene concentration in Tetra Pak decreased sharply, and when toluene gas was injected five times or more, toluene was not detected 30 minutes after the injection. From the above, it was found that the titanium oxide-supported activated carbon A has extremely high toluene removal performance in the air.

(Example 2)
In this example, methylene blue, which is a contaminant in water, was removed using activated carbon A carrying titanium oxide. In a 2 liter stainless steel tray, 10 g of the titanium oxide-supported activated carbon A and 1 liter of water were placed. Next, after emitting light from a distance of 1 cm by 16 LEDs having an emission peak wavelength of 375 nm and an output of 0.5 mW to 10 g of titanium oxide-supported activated carbon A for 2 hours, 10 g of methylene blue aqueous solution was injected, and the color of water in the tray was visually evaluated every 15 minutes after the injection. The blueness immediately after the injection of the methylene blue aqueous solution was 5 and the blueness of pure water was 0.

  Moreover, the blueness of the water in a tray was evaluated like Example 2 except not having put the said titanium oxide carrying activated carbon A into a tray as a blank (this is called Comparative Example 2a). Further, the blueness of water in the tray was evaluated in the same manner as in Example 2 except that 1 g of columnar activated carbon having a diameter of 5 mm and a height of 10 mm was placed in the tray instead of the titanium oxide-supported activated carbon A. (This is referred to as Comparative Example 2b). The results are summarized in Table 2.

  As is clear from Table 2, in the case of the blank (Comparative Example 2a), there is no change in the color of water in the tray, and in the case of activated carbon (Comparative Example 2b), the color of the water in the tray is 2 after 60 minutes. Reduced to. In contrast, in the case of activated carbon A carrying titanium oxide (Example 2), the color of the water in the tray drops to 2 after 15 minutes, to 1 after 30 minutes, and becomes the same as that of pure water after 45 minutes. It was. From the above, it was found that the titanium oxide-supported activated carbon A has very high methylene blue removal performance in water.

[Production of sheet type fluid purification device HHS-AR1]
1. Production of Titanium Oxide-Supported Porous Material B (Photocatalyst-Supported Porous Material) 80.12 g of titanium hydroxide (Ti (OH) ₄ .2H ₂ O) fine powder having a secondary particle size of 50 nm to 100 nm and 80. The titanium hydroxide slurry was prepared by thoroughly stirring and mixing at a rate of 12 g. 49.3 g of the titanium hydroxide slurry was impregnated with a mixture of 50 g of cocoon pattern activated carbon having a particle size of 0.5 mm and 50 g of zeolite having a particle size of 0.5 mm. When hydrogen peroxide solution (35% by mass) was added to this at a temperature of 30 ° C., a self-exothermic reaction occurred. After the reaction, when dried at 250 ° C. for 1 hour in a dryer, a titanium oxide-supported porous body B was obtained. Since this titanium oxide-supporting porous body B has extremely high harmful substance removal performance in the following Examples 3 and 4, the porous titanium oxide is at least the entrance portion of the pores of the porous body (activated carbon and zeolite). It is thought that it is carried on the surface.

2. Production of Sheet Type Fluid Purification Device HHS-AR1 Referring to FIG. 1, the above-mentioned titanium oxide-supported porous body B is placed on a polyurethane cloth sheet 71 having a length L _S of 80 mm, a width W _S of 80 mm, and a thickness of 3 mm. 0.7 g was spotted. Next, 16 LEDs with an emission peak wavelength of 375 nm and an output of 0.5 mW were arranged on the upper plate 75 as the light source 5 with a pitch P _L and P _W of 20 mm. Here, the distance H between the light source 5 and the titanium oxide-supporting porous body B (photocatalyst-supporting porous body 1) spotted on the sheet 71 is 1 cm, and the length L and width of the lower plate 73 and the upper plate 75 are as follows. W was 10 cm in all cases. The lower plate 73 and the upper plate 75 were white acrylic resin plates. Thus, a sheet type fluid purification device HHS-AR1 was obtained.

(Example 3)
In this embodiment, toluene, which is a harmful substance in the air, is removed using the sheet type fluid purification device HHS-AR1. First, the sheet type fluid purification device HHS-AR1 was preliminarily operated for 2 hours. Next, the sheet-type fluid purification device HHS-AR1 that was continuously operated was sealed in a 2-liter tetrapack. Next, toluene gas was injected every 25 minutes so that the initial toluene gas concentration was 100 ppm, and the toluene gas concentration in Tetra Pak was measured with a detector tube every 5 minutes of toluene gas injection each time. The results are summarized in Table 3 and FIG.

  As apparent from Table 3 and FIG. 29, in each injection of toluene gas, the concentration (residual concentration) of toluene gas was 100 ppm immediately after the injection, but the concentration of toluene gas (residual concentration) was 5 minutes after the injection. Was reduced to about 20 ppm, and after 20 minutes from the injection, the toluene gas concentration (residual concentration) was 0 ppm, that is, completely removed. Similar results were obtained regardless of the number of toluene gas injections. Thus, all of the injected toluene gas was removed, and the cumulative decomposition concentration of toluene gas after 245 minutes reached 1000 ppm. From the above, it was found that the sheet type fluid purification device HHS-AR1 has a very high toluene removal performance in the air.

Example 4
The present embodiment is an example in which methylene blue, which is a pollutant in water, is removed using a sheet type fluid purification device HHS-AR1. First, the sheet type fluid purification device HHS-AR1 was preliminarily operated for 2 hours. Next, the sheet-type fluid purification apparatus HHS-AR1 and 1 liter of water that were kept in operation were placed in a 2-liter stainless steel tray. Next, 10 g of a 10 mass% methylene blue aqueous solution was injected, and the color of water in the tray was visually evaluated every 15 minutes after the injection. The blueness immediately after the injection of the methylene blue aqueous solution was 5 and the blueness of pure water was 0.

  Moreover, the blueness of the water in a tray was evaluated like Example 4 except not having put the sheet | seat type | formula fluid purification apparatus HHS-AR1 into the tray as a blank (this is called the comparative example 3). The results are summarized in Table 4.

  As is clear from Table 4, in the case of the blank (Comparative Example 3), there was no change in the color of water in the tray. On the other hand, when the sheet-type fluid purification device HHS-AR1 is present (Example 4), the water color of the tray is up to 3 after 15 minutes, up to 2 after 30 minutes, and up to 1 after 45 seconds. After 60 minutes, it became the same as pure water. From the above, it was found that the sheet type fluid purification device HHS-AR1 has a very high methylene blue removal performance in water.

[Light source protection]
In the fluid purifying apparatuses of Examples 5 to 28 described below, a point light source or a line light source is covered with a fluororesin paint (FX clear manufactured by Cerastar Paint Co., Ltd.) (light transmissive coating material) as the light source 5 or the original light source 4. The light source used was used.

[Production of Titanium Oxide-Supported Powdered Zeolite C (Photocatalyst-Supported Porous Material)]
50.64 g of titanium hydroxide (Ti (OH) ₄ .2H ₂ O) fine powder having a secondary particle size of 50 nm to 100 nm and titanium oxide (TiO ₂ ) fine powder having a secondary particle size of 50 nm to 100 nm 26.62 g and 63.29 g of water were thoroughly stirred and mixed to prepare a titanium hydroxide / titanium oxide mixed slurry. 44.0 g of the titanium hydroxide / titanium oxide mixed slurry was impregnated with 100 g of zeolite powder (Chigusu manufactured by Chubu Electric Power Co., Inc.) having an average particle size of 30 μm. When hydrogen peroxide solution (35% by mass) was added to this at a temperature of 30 ° C., a self-exothermic reaction occurred. After the reaction, when dried in a dryer at 200 ° C. for 1 hour, titanium oxide-supported powdery zeolite C was obtained. Since this titanium oxide-supported powdery zeolite C has extremely high harmful substance removal performance in Examples 5, 7, 9 and 11 below, porous titanium oxide is present at least at the entrance of the pores of the powdered zeolite. It is thought that it is carried.

[Preparation of sulfur-doped titanium oxide-supported powdery zeolite D (photocatalyst-supported porous body)]
50.64 g of titanium hydroxide (Ti (OH) ₄ .2H ₂ O) fine powder having a secondary particle size of 50 nm to 100 nm and titanium oxide (TiO ₂ ) fine powder having a secondary particle size of 50 nm to 100 nm 26.62 g and thiourea fine powder 5.06 g were mixed with good stirring at a ratio of 63.29 g of water to prepare a sulfur-added titanium hydroxide / titanium oxide mixed slurry. 44.0 g of the sulfur-added titanium hydroxide / titanium oxide mixed slurry was impregnated with 100 g of zeolite powder (Chikyuls manufactured by Chubu Electric Power Co., Inc.) having an average particle size of 30 μm. When hydrogen peroxide solution (35% by mass) was added to this at a temperature of 30 ° C., a self-exothermic reaction occurred. After reaction, when dried at 200 ° C. for 1 hour in a dryer, sulfur-doped titanium oxide-supported powdery zeolite D was obtained. Since this titanium oxide-supported powdery zeolite D has extremely high harmful substance removal performance in the following Examples 6, 8, 10 and 12, the porous sulfur-doped titanium oxide is at least the entrance of the pores of the powdered zeolite. It is thought that it is carried on the part.

(Example 5)
Referring to FIG. 1, on a polyethylene non-woven sheet 71 having a length L _S of 200 mm, a width W _S of 100 mm and a thickness of 3 mm and a porosity of 70% by volume, the above-mentioned titanium oxide-supported zeolite C (photocatalyst-supported porous material) Body 1) was spotted with a basis weight of 50 g / m ² . Next, the sheet 71 spotted with the titanium oxide-supported powdered zeolite C was placed on the lower plate 73. Next, 32 points of SMD (NS375L-7SFF manufactured by Nitride) having 32 light emitting peak wavelengths of 375 nm and a forward voltage of 3.2 V (standard) as a point light source (light source 5) on the upper plate 75 have pitches P _L and P _W. Arranged at 25 mm. Here, the distance H between the point light source (light source 5) and the titanium oxide-supported powdered zeolite C spotted on the sheet 71 is 10 mm, and the lower plate 73 and the upper plate 75 both have a length L of 200 mm. The width W was 100 mm. The lower plate 73 and the upper plate 75 were white acrylic resin plates. Further, a blower fan for flowing air into the space between the lower plate 73 and the upper plate 75 was provided. Thus, a sheet type fluid purification device V was obtained.

The sheet type fluid purification device V in which the internal flow rate was adjusted to 0.5 m ³ / min by a blower fan was placed in a 1 m ³ hermetic box filled with 100 ppm of acetaldehyde concentration, and every 10 minutes, Acetaldehyde concentration in the hermetic box was measured using a detector tube (92M and 92L manufactured by Gastec). The results are summarized in Table 5.

(Example 6)
Referring to FIG. 1, the above-mentioned sulfur-doped titanium oxide-supported zeolite D (photocatalyst-supported) is placed on a polyethylene non-woven sheet 71 having a length L _S of 200 mm, a width W _S of 100 mm and a thickness of 3 mm and a porosity of 70% by volume. The porous body 1) was spotted at a basis weight of 50 g / m ² . Next, a sheet 71 spotted with this sulfur-doped titanium oxide-supported zeolite D was placed on the lower plate 73. Next, 32 point SMDs (NSSW100D manufactured by Nichia Corporation) with a forward voltage of 3.2 V (standard) having a light emission peak wavelength between 400 nm and 700 nm are pitched as point light sources (light sources 5) on the upper plate 75. P _L and P _W are arranged at 25 mm. Here, the distance H between the point light source (light source 5) and the sulfur-doped titanium oxide-supported powdered zeolite D spotted on the sheet 71 is 10 mm, and the lower plate 73 Each of the upper plate 75 and the upper plate 75 had a length L of 200 mm and a width W of 100 mm, and a white acrylic resin plate was used for the lower plate 73 and the upper plate 75. The lower plate 73 and the upper plate 75 A blower fan was provided for flowing air in the space between the sheet 75 and the sheet-type fluid purification device VI, and the sheet-type fluid purification device VI was used under the same conditions as in Example 5. Airtight box The acetaldehyde concentration was measured. The results are summarized in Table 5.

(Example 7)
Referring to FIG. 4, on a sheet 71 of polyethylene nonwoven fabric having a length L of 200 mm, a width W of 100 mm and a thickness of 3 mm and a porosity of 70% by volume, the above titanium oxide-supported zeolite C (photocatalyst-supported porous body 1 ) Was spotted at a basis weight of 50 g / m ² . Next, the sheet 71 spotted with the titanium oxide-carrying zeolite C was placed on the lower plate of the fixed frame 74. Next, two black lights (FL4BLB manufactured by Toshiba Corporation) having a light emission peak wavelength of 360 nm and 4 W as a point light source (light source 5) were arranged on the upper plate of the fixed frame 74 with a pitch P _W of 50 mm. Here, the distance H between the line light source (light source 5) and the titanium oxide-supported powdered zeolite C spotted on the sheet 71 is 50 mm, and the lower plate and the upper plate of the fixed frame 74 both have a length L. The width was 200 mm and the width W was 100 mm. A white acrylic resin plate was used for the fixed frame 74. Moreover, the ventilation fan for flowing air in the space between the lower board and upper board of the fixed frame 74 was provided. Thus, a sheet type fluid purification device VII was obtained. Using this sheet type fluid purification device VII, the acetaldehyde concentration in the airtight box was measured under the same conditions as in Example 5. The results are summarized in Table 5.

(Example 8)
Referring to FIG. 4, on a polyethylene non-woven sheet 71 having a length L of 200 mm, a width W of 100 mm and a thickness of 3 mm and a porosity of 70% by volume, the sulfur-doped titanium oxide-supported zeolite D (photocatalyst-supported porous material) Body 1) was spotted with a basis weight of 50 g / m ² . Next, the sheet 71 on which the sulfur-doped titanium oxide-carrying zeolite D was spotted was placed on the lower plate of the fixed frame 74. Next, two 4 W straight tube fluorescent lamps (FL4W manufactured by NEC) having a peak emission wavelength between 400 nm and 700 nm are arranged on the upper plate of the fixed frame 74 as a point light source (light source 5) with a pitch P _W of 50 mm. did. Here, the distance H between the line light source (light source 5) and the sulfur-doped titanium oxide-supported powdery zeolite D spotted on the sheet 71 is 50 mm, and the lower plate and the upper plate of the fixed frame 74 are both lengths. L was 200 mm and width W was 100 mm. A white acrylic resin plate was used for the fixed frame 74. Moreover, the ventilation fan for flowing air in the space between the lower board and upper board of the fixed frame 74 was provided. Thus, a sheet type fluid purification device VIII was obtained. Using this sheet type fluid purification device VIII, the acetaldehyde concentration in the airtight box was measured under the same conditions as in Example 5. The results are summarized in Table 5.

Example 9
Referring to FIG. 7, the above-mentioned titanium oxide-supported zeolite C (photocatalyst-supported porous body 1) was placed on a polyethylene non-woven sheet 71 having a length L of 200 mm, a width W of 100 mm, and a thickness of 3 mm and a porosity of 70% by volume. ) Was spotted at a basis weight of 50 g / m ² . In addition, a surface light source (light source 5) including an original light source 4 including six SMDs (NS375L-7SFF manufactured by Nitride Co., Ltd.) and a light guide plate 7 for ultraviolet light (manufactured by NanoCreate) arranged at equal intervals. Got ready. Next, the surface light source (light source 5) was disposed on the lower plate of the fixed frame 74, and the sheet 71 spotted with the titanium oxide-carrying zeolite C was disposed on the light guide plate 7 of the surface light source (light source 5). Here, the distance H between the titanium oxide-supported powdery zeolite C spotted on the sheet 71 and the upper plate of the fixed frame 74 is 10 mm, and the light guide plate 7 of the surface light source (light source 5) and the upper plate of the fixed frame 74 are. Each had a length L of 200 mm and a width W of 100 mm. A white acrylic resin plate was used for the fixed frame 74. Moreover, the ventilation fan for flowing air in the space between the light-guide plate 7 of a surface light source (light source 5) and the upper board of the fixed frame 74 was provided. Thus, a sheet type fluid purification device IX was obtained. Using this sheet type fluid purification device IX, the acetaldehyde concentration in the airtight box was measured under the same conditions as in Example 5. The results are summarized in Table 5.

(Example 10)
Referring to FIG. 7, on a polyethylene non-woven fabric sheet 71 having a length L of 200 mm, a width W of 100 mm and a thickness of 3 mm and a porosity of 70 vol. The compact 1) was spotted with a basis weight of 50 g / m ² . Further, a surface light source (light source 5) including an original light source 4 including six SMDs (NSW100D manufactured by Nichia Corporation) and a light guide plate 7 for visible light (manufactured by Nanocreate) arranged at equal intervals is provided. Got ready. Next, the surface light source (light source 5) was disposed on the lower plate of the fixed frame 74, and the sheet 71 on which the sulfur-doped titanium oxide-carrying zeolite D was spotted was disposed on the light guide plate 7 of the surface light source (light source 5). Next, the sheet 71 on which the sulfur-doped titanium oxide-carrying zeolite D was spotted was placed on the lower plate of the fixed frame 74. Here, the distance H between the sulfur-doped titanium oxide-supported powdery zeolite D spotted on the sheet 71 and the upper plate of the fixed frame 74 is 10 mm, and the light guide plate 7 and the fixed frame 74 of the surface light source (light source 5) All of the upper plates had a length L of 200 mm and a width W of 100 mm. A white acrylic resin plate was used for the fixed frame 74. Moreover, the ventilation fan for flowing air in the space between the light-guide plate 7 of a surface light source (light source 5) and the upper board of the fixed frame 74 was provided. Thus, a sheet type fluid purification device X was obtained. Using this sheet type fluid purification device X, the acetaldehyde concentration in the airtight box was measured under the same conditions as in Example 5. The results are summarized in Table 5.

(Example 11)
Referring to FIG. 9, the above-mentioned titanium oxide-supported zeolite C (on a polyethylene non-woven sheet 71 having a width W ₁ of 100 mm, a width W ₂ of 100 mm and a thickness T _S of 3 mm and a porosity of 70% by volume) The photocatalyst-supporting porous body 1) was spotted at a basis weight of 50 g / m ² . In addition, a surface light source (light source 5) including the original light source 4 including nine SMDs (NS375L-7SFF manufactured by Nitride Co., Ltd.) and the light diffusing material 8 arranged at equal intervals in the ventilation base was prepared. Here, as the light diffusing material 8, a stainless fiber sheet having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a thickness T _L of 25 mm and a porosity of 70% by volume was used. Next, the two polyethylene nonwoven fabric sheets 71 on which the titanium oxide-carrying zeolite C was spotted were placed on the main surface 8m of the light diffusing material of the surface light source (light source 5). Moreover, the ventilation fan for flowing air from the main surface of the sheet | seat 71 to the light diffusing material 8 of the surface light source (light source 5) and the main surface of the original light source 4 was provided. Thus, a sheet type fluid purification device XI was obtained. Using this sheet type fluid purification device XI, the acetaldehyde concentration in the airtight box was measured under the same conditions as in Example 5. The results are summarized in Table 5.

(Example 12)
Referring to FIG. 10, two width W ₁ is 100mm, the width W ₂ is 100mm and thickness T _S is 3mm of porosity 70% by volume of a polyethylene nonwoven sheet 71 the sulfur-doped titanium oxide supported zeolite on D (photocatalyst-supported porous body 1) was spotted at a basis weight of 50 g / m ² . In addition, a surface light source (light source 5) including an original light source 4 including two straight tube fluorescent lamps (FL4W manufactured by NEC Corporation) and a light diffusing material 8 arranged at equal intervals in a ventilation base was prepared. Here, as the light diffusing material 8, a stainless fiber sheet having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a thickness T _L of 25 mm and a porosity of 70% by volume was used. Next, the two polyethylene nonwoven fabric sheets 71 on which the sulfur-doped titanium oxide-carrying zeolite D was spotted were placed on the main surface 8 m of the light diffusing material of the surface light source (light source 5). Moreover, the ventilation fan for flowing air from the main surface of the sheet | seat 71 to the light diffusing material 8 of the surface light source (light source 5) and the main surface of the original light source 4 was provided. Thus, a sheet type fluid purification device XII was obtained. Using this sheet type fluid purification device XII, the acetaldehyde concentration in the airtight box was measured under the same conditions as in Example 5. The results are summarized in Table 5.

  The relationship between the elapsed time and the aldehyde concentration in the airtight box in the results of Table 5 is plotted in FIG. As is clear from Table 5 and FIG. 30, high fluid purification performance was obtained in any of the sheet-type fluid purification devices of Examples 5 to 12.

[Production of Titanium Oxide-Supported Honeycomb Activated Carbon E (Photocatalyst-Supported Porous Material)]
25.32 g of titanium hydroxide (Ti (OH) ₄ .2H ₂ O) fine powder with a secondary particle size of 50 nm to 100 nm and titanium oxide (TiO ₂ ) fine powder with a secondary particle size of 50 nm to 100 nm 13.31 g and 80.12 g of 2-propanol (isopropyl alcohol) were thoroughly stirred and mixed to prepare a titanium hydroxide / titanium oxide mixed slurry. 71.0 g of the titanium hydroxide / titanium oxide mixed slurry has a honeycomb structure that has a width W ₁ of 100 mm, a width W ₂ of 100 mm, a length L _H of 30 mm, and extends in the length L direction. Were impregnated with 120 g of 200-mesh honeycomb activated carbon (manufactured by Seiei Service Co., Ltd.). When hydrogen peroxide solution (35% by mass) was added to this at a temperature of 30 ° C., a self-exothermic reaction occurred. After the reaction, when dried for 1 hour at 200 ° C. in a dryer, a titanium-oxide-supported honeycomb-like activated carbon E was obtained. Since this titanium oxide-supporting honeycomb-like activated carbon E has extremely high harmful substance removal performance in Examples 13, 15, 17 and 19 below, porous titanium oxide is at least at the entrance of the pores of the honeycomb-like activated carbon. It is thought that it is carried.

[Preparation of sulfur-doped titanium oxide-supported honeycomb activated carbon F (photocatalyst-supported porous body)]
25.32 g of titanium hydroxide (Ti (OH) ₄ .2H ₂ O) fine powder with a secondary particle size of 50 nm to 100 nm and titanium oxide (TiO ₂ ) fine powder with a secondary particle size of 50 nm to 100 nm 13.31 g and thiourea fine powder 2.53 g were mixed with sufficient stirring at a ratio of 80.12 g of 2-propanol (isopropyl alcohol) to prepare a sulfur-added titanium hydroxide / titanium oxide mixed slurry. 71.0 g of the sulfur-added titanium hydroxide / titanium oxide mixed slurry has a honeycomb structure having a width W ₁ of 100 mm, a width W ₂ of 100 mm, a length L _H of 30 mm, and extending in the length L direction. 120 g of honeycomb activated carbon having a roughness of 200 mesh (manufactured by Seiei Service Co., Ltd.) was impregnated. When hydrogen peroxide solution (35% by mass) was added to this at a temperature of 30 ° C., a self-exothermic reaction occurred. After the reaction, when dried in a dryer at 200 ° C. for 1 hour, sulfur-doped titanium oxide-supported honeycomb-like activated carbon F was obtained. Since this sulfur-doped titanium oxide-supported honeycomb activated carbon F has extremely high harmful substance removal performance in the following Examples 14, 16, 18 and 20, the porous sulfur-doped titanium oxide is at least pores of the honeycomb-shaped activated carbon. It is thought that it is carried at the inlet portion of the.

(Example 13)
Referring to FIG. 11, honeycomb openings 1k and 1k ′ on both sides of titanium oxide-supporting honeycomb-like activated carbon E (photocatalyst-supporting porous body 1) having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a length L of 30 mm. And an SMD having a peak emission wavelength of 375 nm and a forward voltage of 3.2 V (standard) of 20 mA as a point light source (light source 5) on a fixed frame 74 having a width W ₁ of 100 mm and a width W ₂ of 100 mm. Nitride NS375L-7SFF) 16 pitches P _L and P _W were arranged at 25 mm. Here, the distance H _H between the honeycomb opening surfaces 1k and 1k ′ and the point light source (light source 5) was 10 mm. A white acrylic resin plate was used for the fixed frame 74. Further, a blower fan for flowing air from one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ was provided. Thus, a honeycomb type fluid purification device XIII was obtained.

In the airtight box of 1 m ³ filled with air with an ammonia concentration of 100 ppm, the honeycomb type fluid purification device XIII whose internal flow rate was adjusted to 0.5 m ³ / min by a blower fan was put, and every 10 minutes, The ammonia concentration in the hermetic box was measured using detector tubes (3LA and 3L manufactured by Gastec). The results are summarized in Table 6.

(Example 14)
Referring to FIG. 11, both sides of the honeycomb opening surface 1k of the width W ₁ is 100mm, the width W ₂ is 100mm and the length L of 30mm sulfur-doped titanium oxide supporting honeycomb activated carbon F (photocatalyst supported porous body 1), A forward voltage of 3.2 V having a light emission peak wavelength between 400 nm and 700 nm as a point light source (light source 5) on a fixed frame 74 having a width W ₁ of 100 mm and a width W ₂ of 100 mm facing each of 1 k ′. 16 standard 20mA SMDs (NSSW100D manufactured by Nichia Corporation) were arranged at pitches P _L and P _W of 25 mm. Here, the distance H _H between the honeycomb opening surfaces 1k and 1k ′ and the point light source (light source 5) was 10 mm. A white acrylic resin plate was used for the fixed frame 74. Further, a blower fan for flowing air from one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ was provided. Thus, a honeycomb type fluid purification device XIV was obtained. Using this honeycomb type fluid purification device XIV, the ammonia concentration in the airtight box was measured under the same conditions as in Example 13. The results are summarized in Table 6.

(Example 15)
Referring to FIG. 12, honeycomb openings 1k and 1k ′ on both sides of titanium oxide-supporting honeycomb-like activated carbon E (photocatalyst-supporting porous body 1) having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a length L of 30 mm. A black light (FL4BLB manufactured by Toshiba Corp.) with a light emission peak wavelength of 360 nm as a line light source (light source 5) on the center line of the fixed frame 74 having a width W ₁ of 100 mm and a width W ₂ of 100 mm. Arranged. Here, the distance H _H between the honeycomb opening surfaces 1k and 1k ′ and the line light source (light source 5) was 100 mm. A white acrylic resin plate was used for the fixed frame 74. Further, a blower fan for flowing air from one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ was provided. Thus, a honeycomb type fluid purification device XV was obtained. Using this honeycomb type fluid purification device XV, the ammonia concentration in the airtight box was measured under the same conditions as in Example 13. The results are summarized in Table 6.

(Example 16)
Referring to FIG. 12, honeycomb openings 1k on both sides of sulfur-doped titanium oxide-supported honeycomb-like activated carbon F (photocatalyst-supporting porous body 1) having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a length L of 30 mm. A 4 W straight tube having an emission peak wavelength between 400 nm and 700 nm as a linear light source (light source 5) on the center line of the fixed frame 74 having a width W ₁ of 100 mm and a width W ₂ of 100 mm, facing each of 1 k ′. A fluorescent lamp (FL4W manufactured by NEC) was disposed. Here, the distance H _H between the honeycomb opening surfaces 1k and 1k ′ and the line light source (light source 5) was 100 mm. A white acrylic resin plate was used for the fixed frame 74. Further, a blower fan for flowing air from one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ was provided. Thus, a honeycomb type fluid purification device XVI was obtained. Using this honeycomb type fluid purification device XVI, the ammonia concentration in the airtight box was measured under the same conditions as in Example 13. The results are summarized in Table 6.

(Example 17)
Referring to FIG. 13, honeycomb openings 1k and 1k ′ on both sides of titanium oxide-supporting honeycomb-like activated carbon E (photocatalyst-supporting porous body 1) having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a length L of 30 mm. A surface light source (light source 5) was disposed on the fixed frame 74 so as to face each of the two. This surface light source (light source 5) includes an original light source 4 including six SMDs (NS375L-7SFF manufactured by Nitride Co., Ltd.) and UV light guide plates 7 (manufactured by NanoCreate Co., Ltd.) arranged at equal intervals. . Here, the distance H _H between the honeycomb opening surfaces 1k and 1k ′ and the main surface 7m of the light guide plate 7 of the surface light source (light source 5) was 25 mm. A white acrylic resin plate was used for the fixed frame 74. Further, a blower fan for flowing air from one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ was provided. Thus, a honeycomb type fluid purification device XVII was obtained. Using this honeycomb type fluid purification device XVII, the ammonia concentration in the airtight box was measured under the same conditions as in Example 13. The results are summarized in Table 6.

(Example 18)
Referring to FIG. 13, honeycomb openings 1k on both sides of a sulfur-doped titanium oxide-supported honeycomb activated carbon F (photocatalyst-supported porous body 1) having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a length L of 30 mm. A surface light source (light source 5) was arranged on the fixed frame 74 so as to face each of 1k ′. The surface light source (light source 5) includes an original light source 4 including six SMDs (NSSW100D manufactured by Nichia Corporation) arranged at equal intervals, and a light guide plate 7 for visible light (manufactured by Nanocreate). . Here, the distance H _H between the honeycomb opening surfaces 1k and 1k ′ and the main surface 7m of the light guide plate 7 of the surface light source (light source 5) was 25 mm. A white acrylic resin plate was used for the fixed frame 74. Further, a blower fan for flowing air from one honeycomb opening surface 1k to the other honeycomb opening surface 1k ′ was provided. Thus, a honeycomb type fluid purification device XVIII was obtained. Using this honeycomb type fluid purification device XVIII, the ammonia concentration in the airtight box was measured under the same conditions as in Example 13. The results are summarized in Table 6.

(Example 19)
Referring to FIG. 14, on the honeycomb opening surface 1k ′ of titanium oxide-supported honeycomb-like activated carbon E (photocatalyst-supporting porous body 1) having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a length L of 30 mm, A light source (light source 5) was arranged. This surface light source (light source 5) includes an original light source 4 including nine SMDs (NS375L-7SFF manufactured by Nitride Co., Ltd.) and light diffusing material 8 arranged at equal intervals in the air-permeable base. Here, as the light diffusing material 8, a stainless fiber sheet having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a thickness T _L of 25 mm and a porosity of 70% by volume was used. Further, a blower fan for flowing air from the honeycomb opening surface 1 k of the titanium oxide-supporting honeycomb-like activated carbon E to the light diffusing material 8 of the surface light source (light source 5) and the main surface of the original light source 4 was provided. Thus, a honeycomb type fluid purification device XIX was obtained. Using this sheet type fluid purification device XIX, the ammonia concentration in the airtight box was measured under the same conditions as in Example 13. The results are summarized in Table 6.

(Example 20)
Referring to FIG. 15, on the honeycomb opening surface 1k ′ of sulfur-doped titanium oxide-supported honeycomb-like activated carbon F (photocatalyst-supporting porous body 1) having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a length L of 30 mm. A surface light source (light source 5) was disposed. This surface light source (light source 5) includes an original light source 4 including two straight tube fluorescent lamps (FL4W manufactured by NEC) and a light diffusing material 8 arranged at equal intervals in a ventilation base. Here, as the light diffusing material 8, a stainless fiber sheet having a width W ₁ of 100 mm, a width W ₂ of 100 mm, and a thickness T _L of 25 mm was used. Further, a blower fan for flowing air in the direction from the honeycomb opening surface 1k of the sulfur-doped titanium oxide-supported honeycomb activated carbon F to the light diffusing material 8 of the surface light source (light source 5) and the main surface of the original light source 4 was provided. Thus, a honeycomb type fluid purification device XX was obtained. Using this sheet type fluid purification device XX, the ammonia concentration in the airtight box was measured under the same conditions as in Example 13. The results are summarized in Table 6.

  The relationship between the elapsed time and the aldehyde concentration in the airtight box in the results of Table 6 is plotted in FIG. As can be seen from Table 6 and FIG. 31, in any of the honeycomb type fluid purification devices of Examples 13 to 20, high fluid purification performance was obtained.

[Production of Titanium Oxide-Supported Granular Activated Carbon G (Photocatalyst-Supported Porous Material)]
10.13 kg of titanium hydroxide (Ti (OH) ₄ .2H ₂ O) fine powder having a secondary particle diameter of 50 nm to 100 nm and titanium oxide (TiO ₂ ) fine powder having a secondary particle diameter of 50 nm to 100 nm 5.32 kg of 2-propanol (isopropyl alcohol) at a ratio of 16.02 g was thoroughly stirred and mixed to prepare a titanium hydroxide / titanium oxide mixed slurry. 9.86 kg of the titanium hydroxide / titanium oxide mixed slurry was impregnated with 20 kg of granular activated carbon (Shirakaba 4-6, manufactured by Nippon Environmental Chemical Co., Ltd.) having an average particle diameter of 5 mm. When hydrogen peroxide solution (35% by mass) was added to this at a temperature of 30 ° C., a self-exothermic reaction occurred. After the reaction, when dried in a dryer at 200 ° C. for 1 hour, titanium oxide-supported granular activated carbon G was obtained. Since this titanium oxide-supporting granular activated carbon G has extremely high harmful substance removal performance in the following Examples 21, 23, 25 and 27, porous titanium oxide is supported on at least the inlet portion of the granular activated carbon. It is thought that.

[Preparation of sulfur-doped titanium oxide-supported granular activated carbon H (photocatalyst-supported porous body)]
10.13 kg of titanium hydroxide (Ti (OH) ₄ .2H ₂ O) fine powder having a secondary particle diameter of 50 nm to 100 nm and titanium oxide (TiO ₂ ) fine powder having a secondary particle diameter of 50 nm to 100 nm 5.32 kg and 1.01 kg of thiourea fine powder were mixed well with stirring at a ratio of 16.02 kg of 2-propanol (isopropyl alcohol) to prepare a sulfur-added titanium hydroxide / titanium oxide mixed slurry. 9.86 kg of the sulfur-added titanium hydroxide / titanium oxide mixed slurry was impregnated with 20 kg of granular activated carbon (Shirakaba 4-6 manufactured by Nippon Enviro Chemical Co., Ltd.) having an average particle diameter of 5 mm. When hydrogen peroxide solution (35% by mass) was added to this at a temperature of 30 ° C., a self-exothermic reaction occurred. After reaction, when dried at 200 ° C. for 1 hour in a dryer, sulfur-doped titanium oxide-supported granular activated carbon H was obtained. Since this sulfur-doped titanium oxide-supported granular activated carbon H has extremely high harmful substance removal performance in the following Examples 22, 24, 26 and 28, the porous sulfur-doped titanium oxide is at least the entrance of the pores of the granular activated carbon. It is thought that it is carried on the part.

(Example 21)
Referring to FIG. 19, a container 50 having a width W ₁ of 250 mm, a width W ₂ of 250 mm, and a length L ₀ of 300 mm is formed on a surface formed in the length L ₀ direction and the width W ₂ direction of the container 50. In parallel, six light source fixing plates 76 having a pitch P _W1 of 41.7 mm and a width W ₁ of 250 mm and a width W ₂ of 250 mm were arranged. On both main surfaces of the light source fixing plate 76, 36 SMDs (NS375L-7SFF manufactured by Nitride) having a light emission peak wavelength of 375 nm, a forward voltage of 3.2 V (standard), and 20 mA as point light sources (light sources 5) are provided. It was arranged at a pitch of 41.7 mm. 5 kg of titanium oxide-supported granular activated carbon G (photocatalyst-supported porous body 1) was placed in the container 50 in which the light source fixing plate 76 was disposed. At this time, the titanium oxide-supporting granular activated carbon 1 was filled in a space having a width W ₁ of 250 mm, a width W ₂ of 250 mm, and a length L of 250 mm. Here, both the upper plate 54u and the lower plate 54d of the container 50 holding the filled titanium oxide-supporting granular activated carbon 1 have openings. Thus, a granular fluid purification device XXI was obtained. The granular fluid purification devices XXI are stacked in three stages in the vertical direction, and a blower fan is provided for flowing air in the direction from the lower plate 54d to the upper plate 54u of each granular fluid purification device XXI. In this way, the granular fluid purification apparatus XXI-III was obtained.

The granular fluid purification device XXI-III, whose internal flow rate is adjusted to 1.0 m ³ / min by a blower fan, is placed in a 1 m ³ hermetic box filled with air with a toluene concentration of 100 ppm. Every 3 hours The toluene concentration at the outlet of the first and second stage fluid purification devices was measured using a detector tube (122 L manufactured by Gastec). The results are summarized in Table 7.

(Example 22)
Referring to FIG. 19, a 20 mA SMD (NSSW100D manufactured by Nichia Corporation) having a forward voltage of 3.2 V (standard) having an emission peak wavelength between 400 nm and 700 nm was used as a point light source (light source 5). A granular fluid purification apparatus XXII-III was obtained in the same manner as in Example 21 except that the sulfur-doped titanium oxide-supporting granular activated carbon H was used as the photocatalyst-supporting porous body 1. Using this granular fluid purification device XXII-III, the toluene concentration at the outlets of the first and second stage fluid purification devices was measured under the same conditions as in Example 21. The results are summarized in Table 7.

(Example 23)
Referring to FIG. 20, a container 50 having a width W ₁ of 250 mm, a width W ₂ of 250 mm, and a length L ₀ of 300 mm is used as a linear light source (light source 5). 16 FL4BLB manufactured by the company were arranged in parallel with the length L ₀ of the container 50 at a pitch P _W1 and P _W2 of 62.5 mm. 5 kg of titanium oxide-supported granular activated carbon G (photocatalyst-supported porous body 1) was placed in a container 50 in which the line light source was disposed. At this time, the granular activated carbon G carrying titanium oxide was filled in a space having a width W ₁ of 250 mm, a width W ₂ of 250 mm, and a length L of 250 mm. Here, both the upper plate 54u and the lower plate 54d of the container 50 holding the filled titanium oxide-supporting granular activated carbon have openings. Thus, a granular fluid purification apparatus XXIII was obtained. The granular fluid purification devices XXIII are stacked in three stages in the vertical direction, and a blower fan is provided to flow air in the direction from the lower plate 54d to the upper plate 54u of each granular fluid purification device XXIII. Thus, a granular fluid purification apparatus XXIII-III was obtained. Using this granular fluid purification device XXIII-III, the toluene concentration at the outlet of the first and second stage fluid purification devices was measured under the same conditions as in Example 21. The results are summarized in Table 7.

(Example 24)
Referring to FIG. 20, a 4 W straight tube fluorescent lamp (FL4W manufactured by NEC) having an emission peak wavelength between 400 nm and 700 nm was used as a linear light source (light source 5), and sulfur was used as a photocatalyst-supporting porous body 1. A granular fluid purification apparatus XXIV-III was obtained in the same manner as in Example 23 except that the doped titanium oxide-supported granular activated carbon H was used. Using this granular fluid purification device XXIV-III, the toluene concentration at the outlets of the first and second stage fluid purification devices was measured under the same conditions as in Example 21. The results are summarized in Table 7.

(Example 25)
Referring to FIG. 21, a container 50 having a width W ₁ of 250 mm, a width W ₂ of 250 mm, and a length L ₀ of 300 mm is formed on a surface formed in the length L ₀ direction and the width W ₂ direction of the container 50. Six pairs of surface light sources (light sources 5) were arranged in parallel with a pitch P _W1 of 41.7 mm. Here, the pair of surface light sources (light source 5) is a pair of light guide plates 7 for ultraviolet light (manufactured by Nanocreate) disposed on both main surfaces of an aluminum foil (manufactured by Toyo Aluminum Co., Ltd.) (reflector 9). ) And the original light source 4 including 15 SMDs (NS375L-7SFF manufactured by Nitride) arranged at equal intervals. The position of the original light source 4 in the surface light source (light source 5) is not particularly limited, but is a side surface of the light guide plate 7 and is filled with the titanium oxide-supporting granular activated carbon G (the photocatalyst-supporting porous body 1). It is preferable from the viewpoint that maintenance is easy. 5 kg of titanium oxide-supporting granular activated carbon G was placed in a container 50 in which the surface light source (light source 5) was placed. At this time, the granular activated carbon G carrying titanium oxide was filled in a space having a width W ₁ of 250 mm, a width W ₂ of 250 mm, and a length L of 250 mm. Here, both the upper plate 54u and the lower plate 54d of the container 50 holding the filled titanium oxide-supporting granular activated carbon 1 have openings. Thus, a granular fluid purification apparatus XXV was obtained. The granular fluid purification devices XXV were stacked in three stages in the vertical direction, and a blower fan was provided to flow air in the direction from the lower plate 54d to the upper plate 54u of each granular fluid purification device XXV. Thus, a granular fluid purification apparatus XXV-III was obtained. Using this granular fluid purification device XXV-III, the toluene concentration at the outlets of the first and second stage fluid purification devices was measured under the same conditions as in Example 21. The results are summarized in Table 7.

(Example 26)
Referring to FIG. 26, a pair of visible light guide plates 7 (nano) arranged on both main surfaces of an aluminum foil (manufactured by Toyo Aluminum Co., Ltd.) (reflecting plate 9) as a pair of surface light sources (light source 5). Used as a photocatalyst-supporting porous body 1, and a photocatalyst-supporting porous body 1. A granular fluid purification apparatus XXVI-III was obtained in the same manner as in Example 25 except that granular activated carbon H was used. Using this granular fluid purification device XXVI-III, the toluene concentration at the outlets of the first and second stage fluid purification devices was measured under the same conditions as in Example 21. The results are summarized in Table 7.

  The relationship between the elapsed time in the results of Table 7 above and the toluene concentration at the outlet of the first-stage and second-stage granular fluid purifiers is plotted in FIG. As is clear from Table 7 and FIG. 31, high fluid purification performance was obtained in any of the granular fluid purification devices of Examples 21 to 26.

(Example 27)
Referring to FIG. 22, 2 kg of titanium oxide-supported granular activated carbon G (photocatalyst-supported porous body 1) was filled in a container 50 having a width W ₁ of 250 mm, a width W ₂ of 250 mm, and a length L of 100 mm. Here, both the upper plate and the lower plate of the container 50 holding the filled titanium oxide-supporting granular activated carbon G have openings. A surface light source (light source 5) was arranged on each of the upper surface 1u and the lower surface 1d of the filled titanium oxide-supporting granular activated carbon G. This surface light source (light source 5) is composed of an original light source 4 and a light diffusing material 8 including black light (FL6BLB manufactured by Toshiba) having six emission peak wavelengths of 360 nm and 6 W arranged at equal intervals in an air-permeable substrate. including. Here, as the light diffusing material 8, a stainless fiber sheet having a width W ₁ of 250 mm, a width W ₂ of 250 mm and a thickness T _L of 25 mm and a porosity of 70% by volume was used. Thus, a granular fluid purification device XXVII was obtained. 8 n of main surfaces of the surface light source (light source 5) arranged on the lower surface 1d of the granular activated carbon G filled with titanium oxide filled with the granular fluid purifying devices XXVII in three stages in the vertical direction. , 8m to the main surfaces 8m, 8n of the surface light source (light source 5) disposed on the upper surface 1u of the filled titanium oxide-supporting granular activated carbon G was provided with a blower fan for flowing air. Thus, a granular fluid purification apparatus XXVII-III was obtained.

The granular fluid purification apparatus XXVII-III, whose internal flow rate is adjusted to 0.5 m ³ / min by a blower fan, is placed in a 1 m ³ hermetic box filled with air with a toluene concentration of 100 ppm. Every 3 hours The toluene concentration at the outlet of the first, second and third stage fluid purification devices was measured using a detector tube (122 L manufactured by Gastec). The results are summarized in Table 8.

(Example 28)
Referring to FIG. 22, 6 W straight tube fluorescent lamps having emission peak wavelengths between six 400 nm to 700 nm arranged at equal intervals as line light sources included in the original light source 4 of the surface light source (light source 5). A granular type fluid purification device XXVIII-III is obtained in the same manner as in Example 27 except that FL6W manufactured by NEC Corporation is used and that the sulfur-doped titanium oxide-supported granular activated carbon H is used as the photocatalyst-supporting porous body 1. It was. Using this granular fluid purification device XXVIII-III, the toluene concentration at the outlet of the first, second, and third-stage fluid purification devices was measured under the same conditions as in Example 27. The results are summarized in Table 8.

  The relationship between the elapsed time in the results of Table 8 above and the toluene concentration at the outlet of the first-stage, second-stage and third-stage granular fluid purifiers is plotted in FIG. As apparent from Table 7 and FIG. 31, in any of the granular fluid purification devices of Examples 27 and 28, high fluid purification performance was obtained.

  In the three-stage granular fluid purification device of Example 27 and Example 28, the two surface light sources sandwiched between the granular fluid purification devices of each stage may be used together as one surface light source. Needless to say, it can be done.

  It should be understood that the embodiments and examples disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

Claims (18)

  One or more photocatalyst-supporting porous bodies (1) in which a porous photocatalytic substance (11) is supported on at least an inlet portion (10e) of the porous body (10), and the photocatalytic substance (11) A fluid purification device comprising one or more light sources (5) that emit light that activates.   The fluid purification device according to claim 1, wherein the photocatalyst-supporting porous body (1) has any one of a powder shape, a granular shape, a honeycomb shape, and a brush shape.   The fluid purification device according to claim 1, wherein the photocatalytic substance (11) is titanium oxide.   The fluid purification device according to claim 3, wherein the light source (5) is a light emitting element having an emission peak wavelength of 700 nm or less.   The fluid purification device according to claim 1, wherein the light source (5) is isolated from the fluid by a light transmissive material (6).   The fluid purification device according to claim 1, wherein the light source (5) includes any one of a point light source, a line light source, and a surface light source. The surface light source includes an original light source (4) and any one of a light guide plate (7) and a light diffusing material (8),
The fluid purification device according to claim 6, wherein the original light source (4) includes either a point light source or a line light source. A sheet (71) for spotting the photocatalyst-supporting porous body (1);
The fluid purification according to any one of claims 1 to 7, wherein the light source is disposed to face the photocatalyst-supporting porous body (1) spotted on the sheet (71). apparatus. The light source (5) includes a surface light source,
The fluid purification device according to claim 8, wherein the sheet (71) on which the photocatalytic porous body (1) is spotted is disposed on a main surface of the surface light source.   The fluid purification device according to claim 9, wherein the surface light source and the photocatalyst-supporting porous body (1) are arranged so that the fluid penetrates the main surface of the surface light source. The photocatalyst-supporting porous body (1) has a honeycomb shape,
The said light source (5) is arrange | positioned facing the honeycomb opening surface (1k, 1k ') of the said photocatalyst carrying | support porous body (1), The range in any one of Claim 1-7 Fluid purification device. The light source (5) includes a surface light source,
The fluid purification device according to claim 11, wherein the surface light source and the photocatalyst-supporting porous body (1) are arranged so that a fluid penetrates a main surface of the surface light source. The photocatalyst-supporting porous body (1) has a brush-like shape,
The said light source (5) is arrange | positioned facing the side surface of the brush bristle part (1a) of the said porous body (1) at the time of the said photocatalyst support, The range in any one of Claim 1-7 Fluid purification device. The light source (5) includes a surface light source,
The fluid purification device according to claim 13, wherein the surface light source and the photocatalyst-supporting porous body (1) are arranged so that the fluid penetrates the main surface of the surface light source.   The fluid purification device according to any one of claims 1 to 7, wherein the light source (5) is disposed between the plurality of the photocatalyst-supporting porous bodies (1). The light source (5) includes a surface light source,
The fluid purification device according to claim 15, wherein the surface light source and the photocatalyst-supporting porous body (1) are arranged so that the fluid penetrates the main surface of the surface light source. The light source (5) includes a surface light source,
The fluid according to any one of claims 1 to 7, wherein the surface light source and the photocatalyst-supporting porous body (1) are arranged so that the fluid penetrates a main surface of the surface light source. Purification equipment.   The fluid purification device according to any one of claims 1 to 7, wherein the fluid is air or water.

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