JP2004050094A - External irradiation type ultraviolet irradiation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable an external irradiation type ultraviolet irradiation device to efficiently perform ultraviolet irradiation by improving the configuration of an ultraviolet lamp to a translucent pipe through which material to be treated passes. <P>SOLUTION: The external irradiation type ultraviolet irradiation device has a plurality of pipe lines through which the material to be treated passes and which are disposed in parallel in a pipe comprising a translucent pipe part, and at least one ultraviolet lamp which is disposed outside of a plurality of the pipe lines so as to approach the translucent pipe part and cross the pipe lines. At least one ultraviolet lamp irradiates the material to be treated which passes through a plurality of the pipe lines, at the same time. The above improved configuration of the ultraviolet lamp to the translucent pipe lines through which the material to be treated passes enables efficient ultraviolet irradiation.The above improved configuration of the ultraviolet lamp to the translucent pipe lines through which the material to be treated passes enables efficient ultraviolet irradiation. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an ultraviolet irradiation apparatus that performs sterilization treatment of bacteria and the like in an object to be treated, decomposition treatment of organic substances, and the like by ultraviolet irradiation.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an ultraviolet irradiation apparatus that performs sterilization of bacteria and the like in a liquid to be processed (or a gas or the like) and decomposition of TOC (Total Organic Carbon) using the energy of ultraviolet light has been known. Are known. Such an ultraviolet irradiation apparatus includes an internal irradiation type apparatus in which an ultraviolet lamp is directly installed in a liquid to be processed and an external irradiation type apparatus in which an ultraviolet lamp is installed outside the liquid to be processed. is there. As a light source (ultraviolet lamp) for irradiating ultraviolet rays, a mercury lamp which efficiently generates ultraviolet rays is often used in any of the internal irradiation type and the external irradiation type ultraviolet treatment apparatuses.
[0003]
Using the above-described internal irradiation type ultraviolet irradiation device, for example, when performing water purification treatment, since the ultraviolet lamp is directly immersed in the water to be treated, the mercury lamp used as the ultraviolet lamp should be accidentally damaged In addition, there is a problem that the mercury sealed in the mercury lamp may be mixed into the water to be treated.
On the other hand, according to the conventional external irradiation type device, a plurality of translucent pipes through which the water to be treated passes are arranged in parallel according to the flow rate of the water to be treated, and each of the plurality of translucent pipes is provided. Corresponding UV lamps are provided in parallel along the length of the translucent pipe, and one UV lamp passes through one translucent pipe where the UV lamps are juxtaposed. Only the water to be treated was irradiated with ultraviolet rays. For this reason, when one ultraviolet lamp is turned off, sufficient ultraviolet light is not irradiated into the translucent pipe to be irradiated with ultraviolet light by that lamp, and the amount of ultraviolet light irradiated on the water to be treated is partially reduced. Extremely reduced. Therefore, even if one of the ultraviolet lamps is turned off, water to be subjected to insufficient ultraviolet irradiation is mixed into the liquid that has been subjected to the ultraviolet irradiation, and the processing capability of the entire ultraviolet irradiation apparatus is reduced. Inconvenience.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and in an external irradiation type ultraviolet irradiation apparatus, it is possible to improve the arrangement of an ultraviolet lamp with respect to a translucent pipe through which an object to be processed passes, and to perform efficient ultraviolet irradiation. The purpose is to.
[0005]
[Means to solve the problem]
The present invention provides a plurality of conduits arranged in parallel, through which an object to be processed passes through a tube including a light-transmissive tube portion, and a portion proximate to the light-transmissive tube portion outside the plurality of conduits. And at least one ultraviolet lamp installed across the plurality of conduits, and irradiates the object to be processed passing through the plurality of conduits with the at least one ultraviolet lamp at the same time. This is an external irradiation type ultraviolet irradiation apparatus characterized by the above-mentioned.
According to the present invention, by arranging at least one ultraviolet lamp so as to cross a plurality of conduits, it is possible to simultaneously irradiate an object to be processed passing through a plurality of conduits with at least one ultraviolet lamp. Will be possible. Therefore, by improving the arrangement of the ultraviolet lamp with respect to the light-transmitting conduit through which the object is passed, efficient ultraviolet irradiation can be performed. In this case, by arranging a plurality of ultraviolet lamps in parallel so as to cross each of the plurality of conduits, even when some of the ultraviolet lamps are turned off, they are arranged in parallel so as to traverse the plurality of conduits. The object to be processed passing through the plurality of conduits can be irradiated with another ultraviolet lamp. Therefore, sufficient ultraviolet irradiation can be performed on the entire object to be processed, and the processing performance of the entire ultraviolet irradiation apparatus does not decrease.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In this embodiment, as an example of an external irradiation type ultraviolet treatment apparatus according to the present invention, an ultraviolet irradiation apparatus for liquid treatment that can be used for water purification treatment and the like will be described. FIG. 1A is a schematic side view showing a configuration example of an external irradiation type ultraviolet irradiation apparatus according to an embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view taken from arrow A in FIG. is there. FIG. 2 is a schematic plan view of the ultraviolet irradiation device shown in FIGS. 1 (a) and 1 (b).
[0007]
In FIG. 1A, in an ultraviolet irradiation apparatus according to this embodiment, a plurality of (four in the figure) pipes 1, 2, 3, and 4 for passing water to be treated are respectively arranged in parallel. A plurality of ultraviolet lamps 10 are arranged in parallel so as to cross the pipelines 1, 2, 3, and 4.
FIG. 1B shows a pipeline 1 as an example of the pipelines 1-4. The pipe 1 is formed by connecting two upright light-transmitting pipes (light-transmitting pipe portions) 20a and 20b by a curved pipe 21 at each upper end, thereby forming an inverted U shape as a whole. I have. The light-transmitting pipes 20a and 20b are made of a light-transmitting pipe material such as FEP (fluororesin) or quartz glass that transmits ultraviolet light, and the water to be treated is irradiated with ultraviolet light at the positions of the light-transmitting pipes 20a and 20b. Done. The other pipes 2 to 4 have the same configuration as the pipe 1.
[0008]
The plurality of ultraviolet lamps 10 are respectively installed outside the pipes 1 to 4 in close proximity to the translucent pipes of the pipes 1 to 4 so as to cross the pipes 1, 2, 3, and 4, respectively. It is characterized by that. As shown in FIG. 1A, the ultraviolet lamps 10 are arranged horizontally long along the direction in which the conduits 1 to 4 are arranged in parallel, and the longitudinal direction of the ultraviolet lamp 10 is It is arranged so as to be substantially perpendicular to the longitudinal direction. The length of the ultraviolet lamp 10 has a predetermined length that can cover the entire length of the arrangement width in which the pipes 1 to 4 are arranged in parallel. This makes it possible to simultaneously irradiate the water to be treated passing through the plurality of conduits 1, 2, 3, and 4 with one ultraviolet lamp 10. In this embodiment, as described below, a plurality of ultraviolet lamps 10 installed so as to cross the pipes 1, 2, 3, and 4, respectively, are connected to two translucent pipes in each of the pipes 1 to 4. Are arranged in parallel so that ultraviolet rays can be irradiated as uniformly as possible.
[0009]
For example, as shown in FIG. 1 (b), two lamps 10a and 10b are disposed on the outer side of the light-transmitting pipe 20a in the inverted U-shaped pipe 1 so that the water to be treated in the pipe 20a is supplied from outside. They are arranged in a suitable arrangement for irradiation. Further, four lamps 10c, 10d, 10e, and 10f irradiate the water to be treated in the pipes 20a and 20b from outside, inside the inverted U-shaped pipe 1, that is, between the translucent pipes 20a and 20b. Are arranged in an appropriate arrangement. Further, two lamps 10g and 10h are arranged in an appropriate arrangement near the outside of the translucent pipe 20b of the inverted U-shaped pipe 1 so as to irradiate the water to be treated in the pipe 20b from outside. I have. The arrangement of these ultraviolet lamps 10a to 10h is the same for the other inverted U-shaped pipes 2, 3 and 4, and each of the ultraviolet lamps 10a to 10h is transparent to a plurality of pipes 1 to 4. It is arranged so that the water to be treated passing through the light pipe (translucent pipe portion) can be irradiated simultaneously.
[0010]
As the ultraviolet lamp 10, for example, a mercury lamp having good ultraviolet radiation efficiency may be used. In the external irradiation type ultraviolet irradiation apparatus as in the present invention, even if the mercury lamp used as the ultraviolet lamp 10 is accidentally damaged, the mercury sealed in the mercury lamp is covered in the conduits 1-4. Since it does not mix in the treated water, it is safe and suitable for employing a mercury lamp as the ultraviolet lamp 10.
[0011]
Next, in the ultraviolet irradiation apparatus according to this embodiment, the configuration of the entire flow path through which the water to be treated passes will be briefly described. As shown in FIGS. 1A and 2, header pipes 5 a and 5 b are joined to lower ends of the light-transmitting pipes 20 a and 20 b of the first conduit 1, respectively, and are connected to one end of one header pipe 5 a. Is connected to a water inlet 30, from which water to be treated is introduced. As will be described later, the other header pipe 5b (which is composed of an elbow pipe) is connected to the water outlet 40. Header pipes are similarly connected to the lower end portions of the light-transmitting pipes of the other pipe lines 2 to 4, respectively. Each header pipe 5a and 5b of the pipe 1 is connected to a corresponding header pipe of the adjacent pipe 2 respectively, and the pipe 1 and the pipe 2 are connected in parallel via the header pipe. Similarly, the pipeline 2 and the pipeline 3 and the pipeline 3 and the pipeline 4 are respectively connected in parallel via a header pipe, and the pipelines 1 to 4 are connected in parallel. The header pipe 5c connected to the water inlet 30 among the header pipes connected to the last pipe line 4 is composed of an elbow pipe, and the other header pipe 5d is connected to the water outlet 40, from which the ultraviolet-irradiated liquid is supplied. Leaks out. The joint of the header pipes connecting the pipes 1 to 4 is an opening through which water can pass, and the header pipes located on the water inlet 30 side are connected to each other to form a water inlet side passage 50a. The header pipes located on the side of the water outlet 40 are connected to each other to form the water outlet side path 50b. Thus, the four pipes 1 to 4 form a parallel flow path between the water inlet 30 and the water outlet 40 such that the water to be treated is dispersed and flows to each of the pipes 1 to 4.
[0012]
With the above-described configuration, the water to be treated guided from the water inlet 30 branches into each of the pipes 1 to 4 via the water inlet side path 50a, and the ultraviolet irradiation treatment is performed in parallel on each of the pipes 1 to 4. Done. As for the two translucent pipes in each of the pipes 1 to 4, one of the pipes is connected to the water inlet side path 50a and the other is connected to the water outlet side path 50b. The water passes through the translucent pipe on the outflow path 50b via the translucent pipe on the inflow path 50a. Accordingly, in each of the pipes 1 to 4, the water to be treated is first subjected to ultraviolet irradiation at the location of the light-transmitting pipe connected to the water inlet side path 50a, and then to the light transmitting pipe connected to the water outlet side path 50b. UV irradiation is performed again at the location of the conductive pipe. Thereby, reliable and effective ultraviolet irradiation is achieved.
A plurality of ultraviolet lamps 10 are arranged in parallel so as to cross pipes 1 to 4, and each of the plurality of ultraviolet lamps 10 simultaneously irradiates water to be treated passing through pipes 1, 2, 3, and 4. Therefore, even if one of the ultraviolet lamps is turned off, the other ultraviolet lamps irradiate the water to be treated passing through the pipes 1 to 4, so that The amount of ultraviolet irradiation does not become extremely short, and a necessary and sufficient amount of ultraviolet irradiation can be secured. Therefore, even when the ultraviolet lamp is accidentally turned off, efficient and stable ultraviolet irradiation processing can be performed without impairing the processing performance of the entire apparatus.
[0013]
In the above-described embodiment, the ultraviolet lamp 10 is disposed so that the longitudinal direction of the ultraviolet lamp 10 is substantially perpendicular to the longitudinal direction of the conduits 1 to 4. The relationship is not limited to vertical (substantially vertical), and the ultraviolet lamp is arranged so as to cross a plurality of conduits, so that the object to be processed passing through the plurality of conduits is simultaneously irradiated by one ultraviolet lamp. Any configuration may be used as long as the ultraviolet lamp is positioned obliquely to the longitudinal direction of the pipeline.
[0014]
In the above embodiment, the shapes of the conduits 1 to 4 are not limited to the inverted U-shape, but may be a U-shape or any other appropriate shape. Further, in the above embodiment, four pipes are provided, but the number of the pipes can be appropriately increased or decreased according to the flow rate of the water to be treated. In the case of adding a pipeline, it is possible to easily add a pipeline in parallel simply by adding a new header pipe.
In the above-described embodiment, the plurality of pipes 1 to 4 are configured to be connected so as to form parallel flow paths in which the water to be treated is branched into the respective pipes 1 to 4. The present invention is not limited to this, and may be applied to a case where a plurality of conduits are connected so as to form a serial flow path between an inlet and an outlet.
The form and / or number of the ultraviolet lamps and the configuration of the conduit in the above-described embodiment are merely examples, and the design may be changed as appropriate.
[0015]
【The invention's effect】
As described above, according to the present invention, by disposing the ultraviolet lamp so as to cross a plurality of conduits, it is possible to simultaneously irradiate an object to be processed passing through the plurality of conduits with one ultraviolet lamp, An excellent effect that efficient ultraviolet irradiation can be achieved is achieved. In addition, even when some of the ultraviolet lamps are turned off, there is an excellent effect that sufficient ultraviolet irradiation can be performed on the entire object to be processed.
[Brief description of the drawings]
FIG. 1A is a schematic side view showing a configuration example of an external irradiation type ultraviolet irradiation apparatus according to an embodiment of the present invention, and FIG. 1B is an external irradiation type ultraviolet irradiation apparatus according to the embodiment. It is a figure which extracts and shows an example of the pipeline provided in an apparatus, and is the side schematic diagram seen from arrow A of (a).
FIG. 2 is a schematic plan view of an external irradiation type ultraviolet irradiation apparatus according to the embodiment.
[Explanation of symbols]
1, 2, 3, 4 Pipe line 10 (10a to 10h) Ultraviolet lamps 20a, 20b Translucent pipe (translucent tube portion)
30 water inlet 40 water outlet

Claims (2)

A plurality of parallel-arranged conduits that allow the object to pass through a tube configured to include the translucent tube portion,
Outside the plurality of conduits, comprising at least one ultraviolet lamp disposed adjacent to the translucent tube portion and across the plurality of conduits, wherein the at least one ultraviolet lamp is An external irradiation type ultraviolet irradiation apparatus, wherein the object to be processed passing through the plurality of conduits is simultaneously irradiated. The external irradiation type ultraviolet irradiation apparatus according to claim 1, wherein a plurality of said ultraviolet lamps are arranged in parallel so as to cross each of said plurality of conduits.

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