JP2013136031A - Ultraviolet treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy-saving ultraviolet treatment device capable of deactivating microbes such as bacteria or viruses by efficiently and surely irradiating water to be treated flowing in a duct with ultraviolet ray, capable of easily performing a component replacement or maintenance checking because of a few numbers of components and being compact.SOLUTION: The ultraviolet treatment device 1 is composed in outline, of: a reactor 2 having the inflow-side and outflow-side flanges 2a and 2b; an ultraviolet irradiation lamp 4 for irradiating the water in the reactor 2 with ultraviolet ray; an ultraviolet sensor 5 having a light receiving part 5a for measuring an ultraviolet intensity; a protective tube 6 for housing the lamp 4 and sensor 5; a cleaning tool 7 for cleaning the surface of the protective tube 6; a drive unit 8 for driving the cleaning tool 7; and a controller 9 for controlling the lamp 4 and the cleaning tool 7.

Description

  In the present invention, by irradiating ultraviolet rays in water, DNA (deoxyribonucleic acid) of microorganisms such as bacteria and viruses existing in water is damaged, and loss of proliferation ability and infectivity (hereinafter referred to as “inactivation”) is achieved. The present invention relates to an ultraviolet treatment apparatus that deforms or decomposes the molecular structure of a substance dissolved in water.

  Inactivation of microorganisms such as bacteria and viruses by ultraviolet irradiation has become widespread as a water disinfection technique replacing chlorination.

  For example, treated water obtained at a sewage treatment facility for treating sewage and agricultural settlement drainage, etc. is irradiated with ultraviolet rays from an ultraviolet treatment device installed in an open channel before being discharged into public water areas. As a result, microorganisms such as bacteria remaining in the treated water are inactivated.

  Moreover, in water purification facilities, in order to inactivate pathogenic microorganisms that cannot be sterilized with chlorine, such as Cryptosporidium, the treated water before chlorine is mixed is irradiated with ultraviolet rays.

  Furthermore, since ultraviolet rays are tasteless and odorless unlike chlorine, safety can be ensured by irradiating ultraviolet rays to natural water without impairing the natural flavor of natural water.

  In addition, when the treated water discharge destination is in the vicinity of a fishing ground or aquaculture, as in a fishery village wastewater treatment facility, there is a concern that residual chlorine in the treated water may affect the environment of the surrounding water area. There are also examples in which ultraviolet treatment is employed as an alternative to the above.

  In the ultraviolet treatment apparatus used for inactivation of microorganisms such as bacteria and viruses in the water treatment facility according to various purposes described above, in order to reliably inactivate microorganisms such as bacteria, ultraviolet irradiation to the water to be treated Need to be made uniform.

  However, even when UV irradiation lamps are appropriately placed in open channels or pipes and UV irradiation to the water to be treated is made uniform, heat generated by the UV irradiation lamps due to other factors, for example, fluctuations in the amount of water to be treated However, there is a concern that UV irradiation may not be properly exhausted and UV irradiation may be made non-uniform due to an increase in the surface temperature of the UV irradiation lamp and an increase in the temperature of the UV processing apparatus on electrical components.

  Moreover, there is a problem that the temperature rise on the surface of the ultraviolet irradiation lamp causes seizure of the ultraviolet irradiation lamp. When the water to be treated is introduced after the amount of water to be treated is temporarily reduced and the ultraviolet irradiation lamp becomes high temperature, the protective tube is caused by the temperature difference between the protective tube of the ultraviolet irradiation lamp (for example, made of quartz glass) and the water to be treated. There is a problem of rapid contraction and breakage.

  In Patent Document 1, in response to the temperature rise of the dielectric container surface of the ultraviolet lamp, the cooling fan is disposed outside the apparatus main body to adjust the surface temperature of the dielectric container to a certain level or less and maintain the ultraviolet transmittance. An ultraviolet disinfection device is disclosed (see paragraphs 0008, 0011 and FIG. 1).

  In addition, when the hardness component or the like present in the water to be treated is irradiated with ultraviolet rays, and adheres to or accumulates on the surface of the ultraviolet irradiation lamp, the adhered matter or deposits hinder ultraviolet irradiation to the water to be treated. Has occurred.

  Patent Document 2 discloses a method and apparatus that has an air injection port, stirs water to be treated with the injected air, and separates and removes the adhering matter adhering to the ultraviolet ray generating tube (paragraph 0010 and FIG. 1).

JP 2009-95724 A Japanese Patent Laid-Open No. 7-100461

The present inventor has recognized at least the following problems when conceiving the present invention.
(1) In the ultraviolet disinfection device disclosed in Patent Document 1, by providing a cooling device to suppress the temperature rise on the surface of the dielectric container of the ultraviolet lamp, the number of parts of the ultraviolet disinfection device increases, and the entire device However, there is a problem that parts become large and parts replacement and maintenance inspection become complicated. In addition, there is a problem that energy for functioning the cooling device is required separately.

(2) The method disclosed in Patent Document 2 that has an air injection port and desorbs and removes deposits on the ultraviolet ray generation tube by stirring the water to be treated with the injected air is simple in an open channel. Although it becomes an apparatus, it is necessary to push in air at a high pressure in a pipe line. As a result, since a large amount of air is injected, the air vent valve cannot cope with it, and there is a problem that it is necessary to provide a separate air vent facility.

(3) The method disclosed in Patent Document 2 of (1) above is a physical removal method by the flow of water to be treated or air, but the force is insufficient to remove the adhered / deposited hardness component. Therefore, there is a problem that a more powerful physical or chemical removal method is required.

  The present invention was made to solve the above-described problems, and efficiently inactivates the water to be treated flowing through the pipe line, and can reliably inactivate ultraviolet rays to inactivate microorganisms such as bacteria and viruses, An object of the present invention is to provide an ultraviolet treatment apparatus that has a small number of parts, is compact, can be easily replaced and maintained, and saves energy.

  The ultraviolet treatment apparatus according to the present invention is an ultraviolet treatment apparatus that has an inflow side flange and an outflow side flange, introduces inflow water into a reactor provided with an ultraviolet irradiation lamp accommodated in a protective tube, and irradiates ultraviolet light. In the reactor, an ultraviolet sensor having a light receiving unit and a cleaning tool for cleaning the surface of the protective tube are disposed, and the reactor is provided with a drive for driving the cleaning tool. It is characterized by this.

  In the ultraviolet treatment apparatus according to the present invention, the cleaning tool includes a chemical liquid injection port, an annular member that wraps the protective tube, a cleaning ring that contacts the protective tube, and a cleaning ring support member that supports the cleaning ring. It is characterized by.

  The ultraviolet treatment apparatus according to the present invention includes a water level sensor that detects a water level in the reactor and / or a water temperature sensor that measures a water temperature in the reactor.

  The ultraviolet ray processing apparatus according to the present invention is characterized in that the ultraviolet ray irradiation lamp and the ultraviolet ray sensor are arranged in the same drawing direction.

  The ultraviolet ray processing apparatus according to the present invention is characterized in that the reactor is provided with a drain outlet for discharging water in the reactor.

  According to the ultraviolet processing apparatus of the present invention, an ultraviolet sensor having a light receiving unit and a cleaning tool for cleaning the surface of a protective tube are disposed in the reactor, and the cleaning tool is driven by the reactor. Since the drive unit is provided, the ultraviolet ray emitted from the UV irradiation lamp, which is detected to be a predetermined amount by the UV sensor, is passed through the protective tube whose surface is cleaned by the cleaning tool driven by the drive unit. The water to be treated can be irradiated uniformly and stably.

  According to the ultraviolet ray processing apparatus of the present invention, the cleaning tool includes an annular member that has a chemical solution inlet and encloses the protective tube, a cleaning ring that contacts the protective tube, and a cleaning ring support member that supports the cleaning ring. Since it comprised so, in addition to the physical cleaning called scraping with the cleaning ring of the annular member driven by the drive machine with the deposit | attachment adhering to a protective tube, there exists an effect which can perform chemical cleaning with a chemical | medical solution. .

According to the ultraviolet ray processing apparatus of the present invention, since the water level sensor that detects the water level in the reactor and / or the water temperature sensor that measures the water temperature in the reactor is provided, the following excellent operational effects are provided. Play.
(1) There is an effect of preventing seizure of the ultraviolet irradiation lamp, which is caused by lighting the ultraviolet irradiation lamp in a state where the protective tube is exposed from the water to be treated in the reactor.
(2) There is an effect of preventing an accident caused by contact of a worker or the like with a high temperature reactor by turning on the ultraviolet irradiation lamp while the protective tube is exposed from the water to be treated in the reactor.
(3) The temperature rise of the protective tube caused by lighting the ultraviolet irradiation lamp with the protective tube exposed from the treated water in the reactor, and the temperature difference between the heated protective tube and the treated water There is an effect of preventing breakage of the protective tube due to.

  According to the ultraviolet processing apparatus according to the present invention, the ultraviolet irradiation lamp and the ultraviolet sensor are arranged so that the pulling directions are the same. It can be put together on one side of the ultraviolet treatment apparatus, and there is an effect that the ultraviolet irradiation lamp and the like can be exchanged and the maintenance inspection work can be performed efficiently.

According to the ultraviolet ray processing apparatus of the present invention, since the drain outlet for discharging the water in the reactor is provided in the reactor, the following excellent effects are obtained.
(1) Discharge the treated water in the reactor whose temperature has been raised by the ultraviolet irradiation lamp from the drain outlet during the time from the power supply to the ultraviolet irradiation lamp until the predetermined ultraviolet intensity is reached (hereinafter referred to as “lighting preparation”). As a result, it is possible to prevent seizure of the ultraviolet irradiation lamp due to retention of high temperature water to be treated in the reactor.
(2) Since the reactor can be emptied by draining the water from the drain before replacing parts or performing maintenance and inspection, a protective tube that protects the UV irradiation lamp and UV sensor from the reactor. Since the floor and replacement parts are not wetted when removed, there is an effect that the work can be facilitated.
(3) By discharging the treated water with insufficient UV treatment flowing into the reactor during the preparation for lighting the UV irradiation lamp, the treated water with insufficient UV treatment flows out from the outlet flange. There is an effect that can be prevented.

It is a top view which fractures | ruptures and shows the whole structure of the ultraviolet-ray processing apparatus by Embodiment 1 of this invention. It is a perspective view which shows the structure of the cleaning tool and protective tube which are arrange | positioned in the reactor of the ultraviolet-ray processing apparatus by Embodiment 2 of this invention. It is a perspective view which decomposes | disassembles and shows the structure of the annular member of the cleaning tool shown in FIG. It is a perspective view which shows the structure of the water level sensor and temperature sensor which were attached to the reactor of the ultraviolet-ray processing apparatus by Embodiment 3 of this invention. It is a perspective view which shows the state by which the ultraviolet sensor and the ultraviolet irradiation lamp were extracted from the reactor of the ultraviolet-ray processing apparatus by Embodiment 4 of this invention in the same direction. It is a perspective view which shows the structure of the drain outlet provided in the reactor of the ultraviolet-ray processing apparatus by Embodiment 5 of this invention. It is a side view which shows the arrangement structure of the ultraviolet irradiation lamp and ultraviolet sensor which were attached in the reactor of the ultraviolet-ray processing apparatus by Embodiment 6 of this invention. It is a side view which shows the arrangement structure of the ultraviolet irradiation lamp and the ultraviolet sensor which were attached in the reactor of the ultraviolet-ray processing apparatus by Embodiment 7 of this invention. It is a side view which shows the arrangement structure of the ultraviolet irradiation lamp and ultraviolet sensor which were attached in the reactor of the ultraviolet-ray processing apparatus by Embodiment 8 of this invention. It is a flowchart which shows Example 1 which applied the ultraviolet-ray processing apparatus by this invention to the water treatment (only chlorine disinfection) with respect to water (well water, underground water, etc.) other than surface water. It is a flowchart which shows Example 2 which applied the ultraviolet-ray processing apparatus by this invention to the water treatment (slow-speed filtration and chlorine disinfection) with respect to water other than surface water (well water, underground water, etc.). It is a flowchart which shows Example 3 which applied the ultraviolet-ray processing apparatus by this invention to the water treatment (manganese sand filtration and chlorine disinfection) with respect to water (well water, underground water, etc.) other than surface water. It is a flowchart which shows Example 4 (multi-barrier) which applied the ultraviolet-ray processing apparatus by this invention to the water treatment (coagulation sedimentation, rapid filtration, and chlorine disinfection) with respect to surface water. It is a flowchart which shows Example 5 (multi barrier) which applied the ultraviolet-ray processing apparatus by this invention to the water treatment (aggregation, rapid filtration, and chlorine disinfection) with respect to surface water. It is a flowchart which shows Example 6 (multi barrier) which applied the ultraviolet-ray processing apparatus by this invention to the water treatment (slow-speed filtration and chlorine disinfection) with respect to surface water. It is a flowchart which shows Example 7 (multi barrier) which applied the ultraviolet-ray processing apparatus by this invention to the water treatment (membrane filtration and chlorine disinfection) with respect to surface water. It is a flowchart which shows Example 8 which applied the ultraviolet-ray processing apparatus by this invention to the accelerated oxidation process with respect to industrial wastewater or biologically treated water.

Embodiment 1 FIG.
FIG. 1 is a top view showing the entire configuration of the ultraviolet ray processing apparatus according to Embodiment 1 of the present invention, with a part thereof broken. In the following description, water to be subjected to ultraviolet treatment is referred to as treated water or inflow water.

  The ultraviolet treatment apparatus 1 according to the first embodiment is arranged in the middle of the pipe P, irradiates the water to be treated flowing through the pipe P with ultraviolet rays, and removes microorganisms such as bacteria and viruses existing in the water to be treated. Inactivate. The treated water that has undergone a series of purification treatments in various water treatment facilities flows into the pipe P. As shown in FIG. 1, the ultraviolet ray processing apparatus 1 has a bottomed cylindrical shape having an outer peripheral portion 2c provided with an inflow side flange 2a and an outflow side flange 2b that can be connected to the pipe P at positions facing each other. A reactor 2, a disc-shaped sealing plate 3 that seals the open end 2 d of the reactor 2 in a liquid-tight state, a long ultraviolet irradiation lamp 4 that irradiates the water to be treated in the reactor 2 with ultraviolet rays, An ultraviolet sensor 5 having a light receiving portion 5a for measuring the ultraviolet intensity from the ultraviolet irradiation lamp 4, and a horizontal extension in the reactor 2, and each of the ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 are individually accommodated. A bottom cylindrical and long protective tube 6, a cleaning tool 7 that reciprocates along the length direction (horizontal direction) on the protective tube 6 to clean the outer peripheral surface of the protective tube 6, and the cleaning tool Driven 7 That the driving machine 8 is a schematic configuration from the controller 9 for controlling the UV radiation lamps 4 and the cleaner 7.

  On the outflow side flange 2b side of the reactor 2, a water level sensor 10 for detecting the water level of the water to be treated flowing out from the reactor 2 and a water temperature sensor 11 for measuring the water temperature of the water to be treated outflowing from the reactor 2 are attached. . Further, the reactor 2 is formed with a drain port 12 for discharging the water to be treated in the reactor 2.

  The sealing plate 3 fixes the base portion of the protective tube 6 accommodated in the reactor 2 in a liquid-tight manner, and rotatably supports the long male screw 8a of the driving machine 8. A through hole (not shown) for receiving the male screw 8a is formed at the center of the sealing plate 3, and four holes are provided around the through hole (not shown) in the first embodiment. Four accommodation holes (not shown) for accommodating the protective tube 6 are formed.

  In the first embodiment, the inside of the protective tube 6 disposed in the reactor 2 along the direction orthogonal to the flow direction of the water to be treated flowing into the reactor 2 (direction orthogonal to the direction of arrow A in FIG. 1). Two ultraviolet irradiation lamps 4 are individually accommodated. Similarly, the two ultraviolet sensors 5 are individually accommodated in protective tubes 6 disposed in the reactor 2 along a direction orthogonal to the direction of arrow A in FIG. In this case, the water to be treated which has flowed into the reactor 2 filled with the water to be treated flows so as to sew between the ultraviolet irradiation lamp 4 and the protective tube 6 that accommodates the ultraviolet sensor 5.

  As the ultraviolet irradiation lamp 4, for example, an intermediate pressure mercury lamp is desirable, but a low pressure mercury lamp, an LED lamp, or the like may be used.

The amount of ultraviolet irradiation is the product of the intensity of ultraviolet light from the ultraviolet irradiation lamp 4 and the irradiation time of ultraviolet light on the water to be treated (ultraviolet irradiation amount mJ / cm ² = mWs / cm ² = ultraviolet intensity mW / cm ² × irradiation time s. ). In this Embodiment 1, it is desirable to irradiate on the conditions which become 10 mJ / cm < ² > or more. Since the intensity of the ultraviolet rays from the ultraviolet irradiation lamp 4 is attenuated with time, the ultraviolet sensor 5 is used to confirm that the necessary amount of ultraviolet irradiation is secured for the water to be treated. The intensity of ultraviolet rays from the irradiation lamp 4 is constantly monitored. For this reason, the position of the light receiving portion 5a of the ultraviolet sensor 5 is determined in the reactor 2 in order to accurately monitor the intensity of the ultraviolet ray irradiated from the ultraviolet irradiation lamp 4 into the water to be treated in the reactor 2 and its intensity distribution. It is desirable to determine in consideration of the position of the ultraviolet irradiation lamp 4 and the number of the lamps installed. When the ultraviolet intensity is attenuated by such an ultraviolet sensor 5 and approaches a predetermined value, for example, the ultraviolet irradiation lamp 4 can be replaced. Further, even if the intensity of ultraviolet rays from the ultraviolet irradiation lamp 4 is higher than a level sufficient to inactivate microorganisms such as bacteria and viruses, a hardness component system is attached to the outer peripheral surface of the protective tube 6 covering the ultraviolet irradiation lamp 4. When the kimono is attached, the amount of ultraviolet irradiation received by the water to be treated is substantially attenuated, so it is necessary to always clean the outer peripheral surface of the protective tube 6. This state can also be grasped using measurement data of the ultraviolet sensor 5.

  The protective tube 6 is a quartz glass sleeve having sufficient transparency to transmit the ultraviolet rays from the ultraviolet irradiation lamp 4, and protects the ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 accommodated therein from the water to be treated. The ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 are prevented from being damaged, and the space formed between the ultraviolet irradiation lamp 4 and the protective tube 6 is cooled by water to be treated through quartz glass to prevent overheating of the ultraviolet irradiation lamp 4. To do. The base portion of such a protective tube 6 is fixed in a cantilever shape in a receiving hole (not shown) of the sealing plate 3, and the distal end portion of the protective tube 6 extends near the bottom 2 e of the reactor 2. Exist.

  The cleaning tool 7 for cleaning the outer peripheral surface of the protective tube 6 is a substantially disk-shaped member having a plurality of receiving holes (not shown), and the protective tubes for the ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 in these receiving holes. 6 is accommodated. The cleaning tool 7 has a female screw hole (not shown) in which a female screw is formed at the center, and is rotatably connected to a male screw 8 a formed along the central axis of the reactor 2. Yes.

  A drive unit 8 is attached to the outside of the sealing plate 3, and the male screw 8a extends in the horizontal direction to the bottom 2e of the reactor 2, and the tip portion rotates on the bottom 2e. Supported as possible. A motor (not shown) for rotating the male screw 8a in the forward / reverse direction is provided in the driving machine 8. When the rotational force of the male screw 8a rotating in the forward / reverse direction by this motor (not shown) is transmitted to the female screw hole (not shown), the cleaning tool 7 moves along the length direction of the male screw 8a, that is, The protective tube 6 is configured to reciprocate in the length direction.

  Each terminal (not shown) in the terminal box 13 attached to the outside of the controller 9 and the drive unit 8 is electrically connected via a wiring 14, and each terminal (see FIG. (Not shown) is connected to the ultraviolet irradiation lamp 4, ultraviolet sensor 5, driver 8, water level sensor 10, water temperature sensor 11 and cleaning tool position sensor 7e (not shown).

Next, the operation will be described.
First, while the ultraviolet irradiation lamp 4 is turned on, the intensity of the ultraviolet rays irradiated into the water to be treated in the reactor 2 is constantly monitored by the ultraviolet sensor 5.
Next, a motor (not shown) of the driving machine 8 controlled by the controller 9 is intermittently driven. Thereby, the cleaning tool 7 reciprocates while sliding on the outer peripheral surface of the protective tube 6. During this reciprocation, the wiper (not shown) in the accommodation hole (not shown) of the cleaning tool 7 physically removes the adherence of the hardness component based on the outer peripheral surface of the protective tube 6. To do. Note that the interval at which the motor of the drive unit 8 is driven may be set based on measurement data such as the intensity of ultraviolet rays by the ultraviolet sensor 5.

  In the first embodiment, the movement of the cleaning tool 7 simultaneously removes the deposits from the outer peripheral surfaces of the four protection tubes 6 at the same time. Therefore, the ultraviolet rays transmitted through the protection tubes 6 that have been attenuated by the deposits. Since the attenuation of the intensity can be recovered, the ultraviolet rays from the two ultraviolet irradiation lamps 4 can be directly applied to the water to be treated without attenuating the intensity, and the intensity can be obtained by the two ultraviolet sensors. 5 enables accurate detection.

  In the first embodiment, as shown in FIG. 1, the light receiving portion 5a of the ultraviolet sensor 5 is provided in the protective tube 6 that extends in the horizontal direction in the water to be treated in the reactor 2, For example, the inner wall surface of the reactor 2 or the like may be attached to the reactor 2. In this case, since it is not necessary to house the ultraviolet sensor 5 in the protective tube 6, the ultraviolet irradiation lamp 4 can be disposed in the protective tube 6 instead of the ultraviolet sensor 5. The number of installations can be increased.

  In the first embodiment, the timing of turning on / off the ultraviolet irradiation lamp 4 and the output of the ultraviolet irradiation lamp 4 are controlled by one controller 9. For example, the driving timing of the cleaning tool 7 is controlled. You may comprise as follows.

  1 shows a configuration in which one ultraviolet treatment device 1 is connected in the middle of one pipe P, a plurality of ultraviolet treatment devices 1 may be connected as necessary. For example, an assembly formed by sequentially connecting an inflow side flange 2a of one reactor 2 and an outflow side flange 2b of another reactor 2 in sequence is arranged in the middle of one pipe P. May be. In that case, you may comprise so that the timing of lighting or extinction of the some ultraviolet irradiation lamp 4 and the drive timing of the cleaning tool 7 may be controlled by the one controller 9. FIG.

  As described above, according to the first embodiment, the light receiving portion is provided in the reactor 2 having the inflow side flange 2a and the outflow side flange 2b and provided with the ultraviolet irradiation lamp 4 accommodated in the protective tube 6. Since the ultraviolet sensor 5 having 5 a and the cleaning tool 7 for cleaning the outer peripheral surface of the protective tube 6 are disposed, and the reactor 2 is provided with the drive unit 8 for driving the cleaning tool 7, the ultraviolet sensor 5 Inflow water in the reactor 2 through the protective tube 6 whose surface has been physically cleaned by the cleaning tool 7 driven by the driving device 8 with the ultraviolet light irradiated by the ultraviolet irradiation lamp 4 detected to be a predetermined amount by There is an effect that the (treated water) can be irradiated uniformly and stably.

Embodiment 2. FIG.
FIG. 2 is a perspective view showing the configuration of the cleaning tool and the protective tube disposed in the reactor of the ultraviolet processing apparatus according to the second embodiment of the present invention, and FIG. 3 shows the annular member of the cleaning tool shown in FIG. It is a perspective view which decomposes | disassembles and shows a structure, The same code | symbol is attached | subjected to the same component as FIG. 1, and duplication description is abbreviate | omitted.
The ultraviolet ray processing apparatus 1 according to the second embodiment is different from the first embodiment in that a cleaning tool 7 for physically and chemically cleaning the outer peripheral surface of the protective tube 6 is provided.

  As shown in FIG. 2, the cleaning tool 7 in the second embodiment is a substantially disk-shaped member in which a plurality of recesses 7 a are formed along the outer peripheral edge portion in order to reduce water flow resistance during driving. . In the central portion of the cleaning tool 7, one female screw hole 7 b having an internal screw (not shown) that can be screwed with the male screw 8 a of the drive unit 8 is formed on the inner peripheral surface. Further, the cleaning tool 7 is formed with two types of housing holes for slidably housing the protective tube 6 around the female screw hole 7b. The first accommodation hole 7c is a circular hole having an inner diameter larger than the outer diameter of the protective tube 6, and FIG. 2 shows three accommodation holes 7c. An annular member (to be described later) for cleaning the outer peripheral surface of the protective tube 6 for housing the ultraviolet irradiation lamp 4 can be mounted in the housing hole 7c. Unlike the accommodation hole 7 c, the second accommodation hole 7 d is a cylindrical hole for cleaning the outer peripheral surface of the protective tube 6 for accommodating the ultraviolet sensor 5, and stands on the substantially disc-shaped cleaning tool 7. It is installed. A cleaning member (not shown) is disposed on the inner peripheral surface of the accommodation hole 7d. In the second embodiment, a position sensor 7e is attached in the vicinity of the female screw hole 7b. The position sensor 7e constantly monitors the position of the cleaning tool 7 in the reactor 2. As the position sensor 7e, any known position detecting means can be used as long as it can measure the distance from the reference position in the reactor 2 to the cleaning tool 7, but the environment in which the cleaning tool 7 moves (ultraviolet rays, In view of water, high temperature, etc., it is desirable that the position of the cleaning tool 7 can be accurately detected without being affected by these effects. Furthermore, the cleaning tool 7 is formed with a drain hole 7f that reduces water flow resistance when the cleaning tool 7 is driven. The housing holes 7 c and 7 d that do not house the ultraviolet irradiation lamp 4 or the ultraviolet sensor 5 can also serve as drain holes when the cleaning tool 7 is driven.

  As shown in FIG. 3, the annular member 15 has a substantially cylindrical main body 15a and an opening outside the opening on the other end side (the opening side or the base side of the bottomed cylindrical protective tube 6 in FIG. 2). Schematic configuration from a pair of chemical solution injection nozzles 15b extending along the axial direction of the main body 15a from the peripheral edge and spaced apart from each other in the vertical direction, and an inner cylindrical portion 15c integrally formed inside the main body 15a Has been. In addition, a recess (not shown) that extends over the entire inner periphery of the main body 15a and communicates with the chemical liquid injection nozzle 15b is formed on the inner peripheral surface of the main body 15a. The recess (not shown) may be formed by hollowing out a part of the inner peripheral surface of the main body 15a, or may be formed as a gap formed between members when a plurality of members are combined. Good. A gap between the recess (not shown) and the outer peripheral surface of the protective tube 6 that holds the chemical solution injected from the chemical solution injection nozzle 15b in a state where the protective tube 6 is inserted into the annular member 15. (Not shown) is formed. If necessary, an amount sufficient to be used for cleaning by increasing the volume of the recess (not shown) by providing one or more grooves on the inner peripheral surface of the main body 15a. The chemical solution may be stored or held to improve the cleaning efficiency.

  The chemical liquid injected into the annular member 15 from the chemical liquid injection nozzle 15b is a gel-like material that can efficiently dissolve mineral components (for example, inorganic substances such as iron, calcium, and manganese) that adhere and accumulate on the outer peripheral surface of the protective tube 6. A phosphoric acid-based cleaning agent is desirable. Examples include, but are not limited to, the product name Acty Clean Gel NSF manufactured by Jaclyn Industries, Inc. (Ontario, Canada).

  In addition, the ring-shaped cleaning ring 16 and the cleaning ring support member 17 are disposed in the inner cylinder portion 15 from both ends of the annular member 15 in a state where the protective tube 6 is inserted into the inner cylinder portion 15 c of the annular member 15. Assembled. In this assembled state, after the protective tube 6 is inserted into the accommodation hole 7c, one end side of the annular member 15 (the bottom side or the distal end side of the bottomed cylindrical protective tube 6 in FIG. 2) contacts the cleaning tool 7. Let In this state, the annular member 15 is fixed to the cleaning tool 7 with screws or the like. Further, the cleaning ring 16 and the cleaning ring support member 17 have an inner diameter sufficient to wrap around the outer peripheral surface of the protective tube 6. When the outer cleaning ring 16 slides on the outer peripheral surface of the protective tube 6, it acts as a wiper that contacts and cleans the outer peripheral surface, and the inner cleaning ring support member 17 is used for the cleaning ring 16. It is a bearing.

  In the second embodiment, during cleaning with the cleaning ring 16, the chemical component injected into the gap (not shown) moves to the outer peripheral surface of the protective tube 6 and adheres to and accumulates on the outer peripheral surface of the protective tube 6. Dissolve. That is, when the cleaning tool 7 reciprocates, physical cleaning by the cleaning ring 16 of the annular member 15 sliding on the outer peripheral surface of the protective tube 6 and chemical cleaning by a chemical solution can be performed simultaneously.

  As described above, according to the second embodiment, the cleaning tool 7 includes the annular member 15 having the chemical injection nozzle 15b and enclosing the protective tube 6, the cleaning ring 16 in contact with the protective tube 6, and the cleaning ring 16 Since the cleaning ring support member 17 for supporting the protective ring 6 is provided, the adhering matter adhering to the protective tube 6 is not only physically cleaned by the cleaning ring 16 of the driven annular member 15 but also chemically treated with a chemical solution. There is an effect that can be cleaned.

Embodiment 3 FIG.
FIG. 4 is a perspective view showing the configuration of the water level sensor and the temperature sensor attached to the reactor of the ultraviolet ray processing apparatus according to Embodiment 3 of the present invention, and the same components as those in FIGS. Therefore, duplicate explanation is omitted.
The ultraviolet ray processing apparatus 1 according to the third embodiment has a configuration in which a water level sensor 10 and a water temperature sensor 11 are provided on the outflow side flange 2b side of the reactor 2.

  Each probe (not shown) of the water level sensor 10 and the water temperature sensor 11 extends from the position above the outer peripheral portion 2c of the reactor 2 into the water to be treated, and the measurement data is transmitted to the controller 9. Has been.

  In the third embodiment, the water level sensor 10 is provided on the outflow side flange 2b side of the reactor 2. Thereby, even if it is a case where the fluctuation | variation of a water level arises in the site | part of an inflow side by the to-be-processed water which flowed in in the reactor 2, the water level in the reactor 2 can be measured. A water temperature sensor 11 is provided on the outflow side flange 2 b side of the reactor 2. This avoids measuring the temperature of the water to be treated on the inflow side flange 2a that has flowed into the reactor 2 as the water temperature in the reactor 2, and prevents the water on the outflow side flange 2b on which the UV treatment has been performed. The temperature of treated water can be measured. Thus, although it is preferable to provide the water level sensor 10 and the water temperature sensor 11 in the outflow side flange 2b, it is needless to say that it may be provided in another position.

  In addition, a through-hole 3a for rotatably receiving the male screw 8a (see FIG. 1) is formed in the central portion of the sealing plate 3 in the third embodiment. In addition, a plurality of receiving holes 3b and 3c are formed around the through hole 3a of the sealing plate 3, and the ultraviolet irradiation lamp 4 and its protective tube 6, the ultraviolet sensor 5 and its protective tube 6 are provided as necessary. Accommodates (details will be described later in the description of FIG. 5). The unused accommodation holes (in this case, the two accommodation holes 3b) are liquid-tightly closed by the disc-shaped lid member 3d.

  As described above, according to the third embodiment, the water level sensor 10 for detecting the water level in the reactor 2 and the water temperature sensor 11 for measuring the water temperature in the reactor 2 are provided. It is possible to prevent the UV irradiation lamp 4 from being lit while the protective tube 6 is exposed from the water, to prevent the UV irradiation lamp 4 from being seized, and to prevent accidents caused by contact of workers or the like with the reactor 2 that is getting hot. In addition, the temperature of the protective tube 6 can be prevented, and the protective tube 6 can be prevented from being damaged due to a temperature difference between the temperature of the protective tube 6 and the water to be treated.

Embodiment 4 FIG.
FIG. 5 is a perspective view showing a state in which the ultraviolet sensor and the ultraviolet irradiation lamp are pulled out from the reactor of the ultraviolet processing apparatus according to the fourth embodiment of the present invention in the same direction, and the same components as in FIGS. The same reference numerals are given and redundant description is omitted.
The ultraviolet processing apparatus 1 according to the fourth embodiment is housed in a protective tube 6 fixed to one sealing plate 3, and the ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 are in the same direction (the direction of arrow B in FIG. 5). It has the structure arrange | positioned so that it may pull out. FIG. 5 shows a state in which the protection tube 6 that accommodates the extracted ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 is also extracted, but this is an expression for explaining the extraction direction. When the actual ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 are exchanged, it is not necessary to pull out the protective tube 6. Rather, the ultraviolet irradiation lamp 4 and the ultraviolet sensor are kept in the reactor 2 without being pulled out. 5 can also be pulled out.

  In the fourth embodiment, one ultraviolet sensor 5 and protective tube 6 are accommodated in the accommodation hole 3b formed at the left side position of the sealing plate 3, and the accommodation hole 3b formed at the right side position of the sealing plate 3 is accommodated. One ultraviolet irradiation lamp 4 and a protective tube 6 are accommodated. The housing holes 3b formed at the upper and lower positions where the protective tube 6 is not housed are liquid-tightly closed by a disk-shaped lid member 3d. The ultraviolet sensor 5 may be accommodated in the accommodation hole 3c.

  As described above, according to the fourth embodiment, the ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 are arranged in the same pulling direction by being accommodated in the protective tube 6 fixed to one sealing plate 3. As a result, the space for drawing out the ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 and the space for maintenance and inspection work can be combined into the sealing plate 3 on one side of the ultraviolet processing apparatus 1, that is, the open end 2d side of the reactor 2, and the ultraviolet irradiation lamp, etc. It is possible to efficiently perform replacement and maintenance inspection work.

Embodiment 5 FIG.
FIG. 6 is a perspective view showing the configuration of a drain outlet provided in the reactor of the ultraviolet processing apparatus according to the fifth embodiment of the present invention. The same components as those in FIGS. Description is omitted.
The ultraviolet treatment apparatus 1 according to the fifth embodiment has a configuration in which a drain port 12 for discharging the water to be treated in the reactor 2 is disposed in the upper part on the inflow side flange 2a side and on the lower side on the outflow side flange 2b. doing.

  As shown in FIG. 6, the drain port 12 is closed by a cap 19 with a packing 18 interposed therebetween, and the cap 19 is fixed to the drain port 12 by a clamp 20. By using this clamp 20, the drain port 12 can be opened and closed relatively easily. Furthermore, the drain pipe connected to the drain port 12 can be easily attached.

As described above, according to the fifth embodiment, since the drain port 12 for discharging the water to be treated in the reactor 2 is disposed in the reactor 2, the following excellent effects can be obtained.
(1) During the preparation for lighting from the power supply to the ultraviolet irradiation lamp 4 until reaching the predetermined ultraviolet intensity, the inflow water in the reactor 2 whose temperature has risen by the ultraviolet irradiation lamp 4 is discharged from the drain port 12, so that the reactor 4 There is an effect of preventing seizure of the ultraviolet irradiation lamp 4 due to the inflow of high temperature inflow therein.
(2) The reactor 2 can be emptied by discharging the water to be treated in the reactor 2 from the drain port 12 before parts replacement or maintenance inspection. Therefore, the ultraviolet irradiation lamp 4 and the ultraviolet sensor 5 Since the floor, replacement parts, and the like are not wetted when the is removed from the reactor 2, there is an effect that the operation can be facilitated.
(3) By discharging the water to be treated with insufficient ultraviolet treatment that has flowed into the reactor 2 during preparation for lighting the ultraviolet irradiation lamp 4 from the drain port 12, the water to be treated with insufficient ultraviolet treatment is discharged to the outflow side. There is an effect capable of preventing outflow from the flange 2b.

Embodiment 6 FIG.
FIG. 7 is a side view showing the arrangement configuration of the ultraviolet irradiation lamp and the ultraviolet sensor mounted in the reactor of the ultraviolet processing apparatus according to the sixth embodiment of the present invention, and the same components as those in FIGS. A reference numeral is attached and a duplicate description is omitted.
The ultraviolet processing apparatus 1 according to the sixth embodiment has a configuration in which a sealing plate 3 includes one ultraviolet irradiation lamp 4 and one ultraviolet sensor 5. In this case, the ultraviolet sensor 5 constantly monitors the intensity of ultraviolet rays from one ultraviolet irradiation lamp 4. When the ultraviolet irradiation lamp 4 is not accommodated, the accommodation hole of the sealing plate 3 is liquid-tightly closed by a substantially disc-shaped lid member 3e. Further, when the ultraviolet sensor 5 is not accommodated, the accommodation hole of the sealing plate 3 is liquid-tightly closed by the disc-shaped lid member 3f.

  As described above, according to the sixth embodiment, since one ultraviolet irradiation lamp 4 and one ultraviolet sensor 5 are provided on the sealing plate 3, the intensity of ultraviolet rays from the ultraviolet irradiation lamp 4 and its intensity distribution. Can be grasped accurately at all times, and there is an effect that it is possible to easily set at the time of cleaning or replacement.

Embodiment 7 FIG.
FIG. 8 is a side view showing the arrangement configuration of the ultraviolet irradiation lamp and the ultraviolet sensor mounted in the reactor of the ultraviolet processing apparatus according to the seventh embodiment of the present invention, and the same components as those in FIGS. A reference numeral is attached and a duplicate description is omitted.
The ultraviolet processing apparatus 1 according to the seventh embodiment has a configuration in which two ultraviolet irradiation lamps 4 and two ultraviolet sensors 5 are provided on a sealing plate 3. In this case, since one ultraviolet sensor 5 is arranged in the vicinity of one ultraviolet irradiation lamp 4, the intensity of ultraviolet rays from each ultraviolet irradiation lamp 4 can be constantly monitored by the nearby ultraviolet sensor 5. . When the ultraviolet irradiation lamp 4 is not accommodated, the accommodation hole of the sealing plate 3 is liquid-tightly closed by a substantially disc-shaped lid member 3e.

  As described above, according to the seventh embodiment, since the two ultraviolet irradiation lamps 4 and the two ultraviolet sensors 5 are provided on the sealing plate 3, the intensity of the ultraviolet rays from the two ultraviolet irradiation lamps 4 and The intensity distribution can be always accurately grasped, and there is an effect that it is possible to easily set at the time of cleaning, replacement, and the like.

Embodiment 8 FIG.
FIG. 9 is a side view showing the arrangement configuration of the ultraviolet irradiation lamp and the ultraviolet sensor mounted in the reactor of the ultraviolet processing apparatus according to the eighth embodiment of the present invention, and the same components as those in FIGS. A reference numeral is attached and a duplicate description is omitted.
The ultraviolet processing apparatus 1 according to the eighth embodiment has a configuration in which the sealing plate 3 includes two ultraviolet sensors 5 including four ultraviolet irradiation lamps 4 and two light receiving units. In this case, since one ultraviolet sensor 5 is disposed between the two ultraviolet irradiation lamps 4, one ultraviolet sensor having two light receiving portions for the intensity of ultraviolet rays from the two ultraviolet irradiation lamps 4. 5 can always be monitored.

  As described above, according to the eighth embodiment, since the four ultraviolet irradiation lamps 4 and the two ultraviolet sensors 5 are provided on the sealing plate 3, the intensity of the ultraviolet rays from the four ultraviolet irradiation lamps 4 and The intensity distribution can be always accurately grasped, and there is an effect that it is possible to easily set at the time of cleaning, replacement, and the like.

Example 1.
FIG. 10 is a flowchart showing Example 1 in which the ultraviolet ray treatment apparatus according to the present invention is applied to water treatment (only chlorine disinfection) for water other than surface water (well water, underground water, etc.).
The ultraviolet treatment in this Example 1 cannot be dealt with by chlorine disinfection before general chlorine disinfection is performed on treated water obtained from water treatment on water other than surface water (well water, underground water, etc.). It is performed for the purpose of inactivating chlorine-resistant pathogenic microorganisms. In this case, the raw water is introduced from the landing well 21 to the ultraviolet treatment apparatus 1 according to the present invention, and, for example, Cryptosporidium is inactivated by irradiating the raw water with ultraviolet rays. Chlorine agents such as sodium are mixed and distributed as purified water.

Example 2
FIG. 11 is a flowchart showing Example 2 in which the ultraviolet treatment apparatus according to the present invention is applied to water treatment (slow filtration and chlorine disinfection) for water other than surface water (well water, underground water, etc.).
The ultraviolet treatment in Example 2 cannot be handled by chlorine disinfection before general chlorine disinfection is performed on treated water obtained from water treatment on water other than surface water (well water, underground water, etc.). It is performed for the purpose of inactivating chlorine-resistant pathogenic microorganisms.

  If the turbidity of the slow filtration treatment water does not fall below 0.1 degrees in the water purification facility equipped with the slow filtration pond 23, it is recognized that it is insufficient as a countermeasure against Cryptosporidium and strengthens the filtration facility. It is necessary to perform UV treatment. In general, the slow filtration basin 23 requires a large filtration area, and it is not easy to strengthen the filtration equipment (expansion of equipment) due to the limitation of the site area of the water purification facility, but the slow filtration is performed by the ultraviolet treatment apparatus 1 according to the present invention. Countermeasures such as Cryptosporidium are made by treating the treated water with ultraviolet rays. In this case, the raw water is introduced into the ultraviolet treatment apparatus 1 according to the present invention from the landing well 21 through the slow filtration pond 23, and after inactivation of, for example, Cryptosporidium is performed by irradiating the filtered water with ultraviolet rays. In the mixing pond 22, a chlorine agent such as sodium hypochlorite is mixed and distributed as purified water.

Example 3
FIG. 12 is a flowchart showing Example 3 in which the ultraviolet treatment apparatus according to the present invention is applied to water treatment (manganese sand filtration and chlorine disinfection) for water other than surface water (well water, underground water, etc.).
The ultraviolet ray treatment in this Example 3 cannot be dealt with by the chlorine disinfection before the general chlorine disinfection is performed on the treated water obtained from the water treatment on the water other than the surface water (well water, underground water, etc.). It is performed for the purpose of inactivating chlorine-resistant pathogenic microorganisms.

  Since manganese sand filtration does not accompany agglomeration, it is not recognized as a countermeasure against Cryptosporidium or the like, and it is necessary to change the filtration method or to perform ultraviolet treatment at the subsequent stage. The ultraviolet treatment device 1 according to the present invention can be applied regardless of the treatment method of the pre-treatment of the water purification facility. In this case, the raw water is introduced from the landing well 21 through the stirrer 24 and the manganese sand filtration tank 25 into the ultraviolet treatment apparatus 1 according to the present invention, and, for example, Cryptosporidium is inactivated by irradiating the filtrate with ultraviolet rays. After that, a chlorine agent such as sodium hypochlorite is mixed in the chlorine mixing pond 22 and distributed as purified water.

Example 4
FIG. 13 is a flowchart showing Example 4 (multi-barrier) in which the ultraviolet ray treatment apparatus according to the present invention is applied to water treatment (flocculation precipitation, rapid filtration and chlorine disinfection) for surface water.
This Example 4 corresponds to the multiplexing (multi-barrier) of countermeasures such as Cryptosporidium for surface water by applying the ultraviolet ray treatment apparatus 1 according to the present invention to the treatment of water taken from surface water. It is.

  The ultraviolet treatment apparatus 1 according to the present invention is applied to a water purification facility provided with a coagulation sedimentation tank 26, a rapid filtration device 27, and a chlorine mixing basin 22. In this case, the raw water is introduced into the coagulation sedimentation tank 26 together with the flocculant, introduced into the ultraviolet treatment apparatus 1 according to the present invention through the rapid filtration device 27, and irradiated with ultraviolet rays to the rapid filtration water, for example, Cryptosporidium or the like. After inactivation, a chlorine agent such as sodium hypochlorite is mixed in the chlorine mixing pond 22 and distributed as purified water.

Example 5 FIG.
FIG. 14 is a flowchart showing Example 5 (multi-barrier) in which the ultraviolet ray treatment apparatus according to the present invention is applied to water treatment (flocculation, rapid filtration and chlorine disinfection) for surface water.
In Example 5, the ultraviolet treatment apparatus 1 according to the present invention is applied to the treatment of water taken from the surface water, so that multiple countermeasures (multi-barrier) such as cryptosporidium for the surface water are supported.

  The ultraviolet treatment apparatus 1 according to the present invention is applied to a water purification facility provided with a coagulator 28, a rapid filtration device 27, and a chlorine mixing basin 22. In this case, the raw water is introduced into the coagulator 28 together with the flocculant, introduced into the ultraviolet treatment device 1 according to the present invention through the rapid filtration device 27, and irradiated with ultraviolet rays to the rapid filtration water, for example, non-cryptosporidium or the like. After activation, a chlorine agent such as sodium hypochlorite is mixed in the chlorine mixing pond 22 and distributed as purified water.

Example 6
FIG. 15 is a flowchart showing Example 6 (multi-barrier) in which the ultraviolet ray treatment apparatus according to the present invention is applied to water treatment (slow filtration and chlorine disinfection) for surface water.
This Example 6 also corresponds to multiplexing (multi-barrier) of countermeasures such as Cryptosporidium for surface water by applying the ultraviolet treatment device 1 according to the present invention to the treatment of water taken from surface water.

  The ultraviolet treatment apparatus 1 according to the present invention is applied to a water purification facility provided with a landing well 21, a slow filtration basin 23, and a chlorine mixing basin 22. The processing steps are the same as in Example 2 shown in FIG. 11 except that the water intake source is different.

Example 7
FIG. 16 is a flowchart showing Example 7 (multi-barrier) in which the ultraviolet ray treatment apparatus according to the present invention is applied to water treatment (membrane filtration and chlorine disinfection) for surface water.
In Example 7, the ultraviolet treatment apparatus 1 according to the present invention is applied to the treatment of the water taken from the surface water, thereby corresponding to the multiplexing (multi-barrier) of countermeasures such as cryptosporidium for the surface water.

  The ultraviolet treatment apparatus 1 according to the present invention is applied to a water purification facility provided with a landing well 21, a membrane filtration device 29, and a chlorine mixing pond 22. In this case, the raw water is introduced from the landing well 21 through the membrane filtration device 29 to the ultraviolet treatment device 1 according to the present invention. After the membrane filtrate is irradiated with ultraviolet rays, for example, Cryptosporidium is inactivated, and then chlorine In the mixing pond 22, a chlorine agent such as sodium hypochlorite is mixed and distributed as purified water.

Example 8 FIG.
FIG. 17 is a flowchart showing Example 8 in which the ultraviolet ray treatment apparatus according to the present invention is applied to accelerated oxidation treatment for purified water, industrial wastewater, biologically treated water or the like.
This Example 8 is an accelerated oxidation method (AOP) in which an oxidizing agent is added and hydroxyl radicals having strong oxidizing power (decomposing power) are generated by irradiating the mixed raw water with ultraviolet rays to decompose pollutants. Further, this is an application example in which the ultraviolet ray processing apparatus 1 according to the present invention is applied.

  In Example 8, in industrial wastewater that has been biologically treated and has reduced suspended solids (SS) and soluble pollutants (BOD, etc.), the pollution that could not be completely decomposed by normal biological treatment such as the activated sludge method. Accelerated oxidation is performed by irradiating an ultraviolet ray from the ultraviolet ray treatment apparatus 1 according to the present invention with an oxidizing agent to which a substance (hardly degradable substance) or a coloring substance (chromaticity component) is added. In this case, the raw water is introduced into the ultraviolet treatment apparatus 1 according to the present invention through the mixer 30 together with the oxidizer, and pollutants that have not been decomposed by normal biological treatment by the ultraviolet irradiation of the mixed water (refractory property) Substances, odorous substances) and coloring substances (chromaticity components) are decomposed and then discharged or supplied through the treated water tank 31.

  The oxidizing agent is preferably, for example, a chlorine agent such as sodium hypochlorite and a material that is easily dissolved in water such as hydrogen peroxide. When ozone is used as the oxidizing agent, an ozone dissolving device for waste water and a waste ozone treatment device are provided. Water itself is also irradiated with ultraviolet rays to generate hydroxyl radicals, but the amount generated is small compared to hypochlorite, hydrogen peroxide and ozone. When hydroxyl radicals are generated by irradiating the photocatalyst with ultraviolet rays in water, it is desirable to increase the surface area of the photocatalyst that is irradiated with ultraviolet rays.

In Example 8, it is desirable to use a light source with an emission wavelength of 185 nm (nanometer) and to irradiate under the condition that the ultraviolet ray irradiation amount is 30 mJ / cm ² or more. The light source is preferably a medium pressure mercury lamp, but may be, for example, a low pressure mercury lamp or an LED lamp as long as it can emit light having a light emission wavelength of about 185 nm. Further, the emission wavelength is not limited to 185 nm, and may be a wavelength of 285 nm or less, for example.

  The ultraviolet treatment apparatus according to the present invention generates a hydroxyl radical or the like by using an oxidizing agent such as ozone or hydrogen peroxide in addition to the above-described use for inactivating microorganisms such as bacteria and viruses. It can also be used for decomposing substances that require an oxidizing action.

1 UV treatment device, 2 reactor, 2a inflow side flange, 2b outflow side flange, 2c outer periphery, 2d open end, 3 sealing plate, 3a through hole, 3b, 3c accommodation hole,
3d, 3e, 3f Lid member, 4 UV irradiation lamp, 5 UV sensor,
5a light receiving part, 6 protective tube, 7 cleaning tool, 7a dent, 7b female screw hole,
7c, 7d accommodation hole, 7e position sensor, 7f drain hole, 8 driver,
8a male screw, 9 controller, 10 water level sensor, 11 water temperature sensor, 12 drain port, 13 terminal box, 14 wiring, 15 annular member,
15a body, 15b chemical injection nozzle, 15c inner cylinder part, 16 cleaning ring,
17 Cleaning ring support member, 18 packing, 19 cap, 20 clamp,
21 landing well, 22 chlorine mixing pond, 23 slow filtration pond,
24 Stirrer, 25 Manganese sand filtration tank, 26 Coagulation sedimentation tank, 27 Rapid filtration device,
28 Coagulator, 29 Membrane filtration device, 30 Mixer, 31 Treated water tank

Claims (5)

Having an inflow side flange and an outflow side flange,
Inflowing water is introduced into the reactor where the UV irradiation lamp is housed in a protective tube.
In ultraviolet processing equipment that irradiates ultraviolet rays,
In the reactor,
An ultraviolet sensor having a light receiving part,
And a cleaning tool for cleaning the surface of the protective tube,
and,
The reactor is provided with a driving device for driving the cleaning tool. The cleaning tool is:
An annular member that has a chemical solution inlet and encloses the protective tube,
Cleaning ring in contact with the protective tube,
The ultraviolet treatment apparatus according to claim 1, further comprising: a cleaning ring support member that supports the cleaning ring. A water level sensor for detecting the water level in the reactor,
And / or a water temperature sensor for measuring a water temperature in the reactor. The ultraviolet irradiation lamp and the ultraviolet sensor are
The ultraviolet ray processing apparatus according to any one of claims 1 to 3, wherein the drawing directions are the same. The reactor includes
The ultraviolet ray processing apparatus according to any one of claims 1 to 4, further comprising a drain outlet for discharging water in the reactor.

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