A vacuum ultraviolet collimated parallel light reactor and water treatment method

Abstract

A vacuum ultraviolet collimated parallel light reactor and a water treatment method, the vacuum ultraviolet collimated parallel light reactor comprising: an irradiation cavity, provided with a first chamber, an irradiation window arranged at the bottom of the first chamber, and an air outlet connected to the first chamber; a pillar, supporting the irradiation cavity; a light source, arranged in the first chamber and connected to the irradiation cavity, configured to emit vacuum ultraviolet rays to the irradiation window; and a reaction cavity, connected to the bottom of the irradiation cavity, provided with a second chamber whose top is connected to the irradiation window and an air inlet connected to the second chamber; wherein the air inlet is used to receive anoxic gas so that the anoxic gas fills the first chamber and the second chamber, and the air outlet is used to discharge the gas in the first chamber. The technical problem to be solved by the present application is how to efficiently utilize vacuum ultraviolet rays.

Description

Technical Field

[0001] The present invention relates to the field of water treatment technology, and in particular to a vacuum ultraviolet collimated parallel light reactor and a water treatment method. Background Art

[0002] Ultraviolet (UV) technology (wavelength of 100nm to 400nm) is widely used and studied in the field of deep water treatment due to its advantages of no by-products, no change in the original properties of water quality, broad-spectrum sterilization and high efficiency. Inactivation UV-C (wavelength of 250nm to 280nm) can destroy the replication process of most pathogenic microorganisms and is currently the most widely used band in the field of UV disinfection. However, for trace, difficult-to-degrade organic matter or trace total organic carbon (TOC) in water, higher energy UV technology is required.

[0003] The energy of vacuum ultraviolet light (wavelength of 100nm to 200nm, VUV) is much higher than that of UV-C, and it can directly photolyze and destroy many high-energy chemical bonds such as C=C, C=N, C-F, C=O in a short time, thereby efficiently decomposing / degrading organic matter or TOC. Since the oxygen in the air can absorb vacuum ultraviolet light to produce ozone, the propagation attenuation of vacuum ultraviolet light in air and water medium is extremely fast and the propagation distance is extremely short. Its attenuation at 10mm in the air reaches more than 85%, and the propagation distance in water is only 5mm.

[0004] The effective dose of ultraviolet light is the core technical parameter for treating the target object. Only when the UV dose reaches the verified effective dose can the effectiveness of disinfection, harmlessness or oxidation treatment be guaranteed. The quasi-parallel beam meter can ensure the Petri coefficient of the UV emitted by the light source (a parameter describing the parallelism of UV, see GB / T 32092-2015 for technical terms of ultraviolet disinfection), and is currently the most professional and convenient method for UV dose verification. The light source of the existing collimated parallel light reactor for detecting the effective dose of ultraviolet disinfection is vacuum ultraviolet light, which is set in the reactor and the reactor is filled with air. Due to the strong absorption of air and the production of ozone by vacuum ultraviolet light, the existing collimated parallel light reactor for detecting the effective dose of vacuum ultraviolet disinfection cannot efficiently utilize vacuum ultraviolet light, and does not have the ability or method to verify the effective dose of vacuum ultraviolet light. Summary of the invention

[0005] The technical problem to be solved by this application is how to efficiently utilize vacuum ultraviolet rays.

[0006] The present application proposes a vacuum ultraviolet collimated parallel light reactor, which comprises:

[0007] An irradiation cavity body is provided with a first cavity, an irradiation window arranged at the bottom of the first cavity, and an air outlet connected to the first cavity;

[0008] A support column, supporting the irradiation cavity;

[0009] a light source, disposed in the first chamber and connected to the irradiation chamber, configured to emit vacuum ultraviolet rays toward the irradiation window; and

[0010] A reaction chamber connected to the bottom of the irradiation chamber, provided with a second chamber whose top is connected to the irradiation window and an air inlet connected to the second chamber;

[0011] The gas inlet is used to receive the oxygen-free gas so that the oxygen-free gas fills the first chamber and the second chamber, and the gas outlet is used to discharge the gas in the first chamber.

[0012] In an illustrative embodiment, the reaction chamber comprises:

[0013] A plurality of cylinders are sequentially arranged downward from the reaction chamber and are sequentially connected;

[0014] a tray, detachably connected to the bottom end of the lowermost cylinder and covering the bottom end; and,

[0015] A sealing member, sealing the gap between each two adjacent cylinders;

[0016] Among them, the cylinder located at the top is connected to the reaction chamber, the air inlet is arranged on the cylinder at the top, the two adjacent cylinders are detachably connected, and the tray can form a detachable connection with the bottom end of any one of the cylinders.

[0017] In an illustrative embodiment, it also includes:

[0018] a first one-way valve, disposed at the gas outlet, and only allowing gas to flow toward and away from the first chamber;

[0019] a second one-way valve, disposed at the gas inlet, and only allowing gas flowing toward the second chamber to pass therethrough; and

[0020] The safety valve is disposed in the irradiation chamber and communicated with the first chamber, and is configured to open when the air pressure in the first chamber is greater than or equal to an air pressure threshold.

[0021] In an illustrative embodiment, two adjacent cylinders are connected by magnetic attraction and / or snap-fit ​​connection.

[0022] In an illustrative embodiment, it also includes:

[0023] A lifting platform is arranged below the tray;

[0024] a culture dish placed on the tray; and,

[0025] A magnetic stirrer, comprising a body arranged on the lifting platform and a magnetic stirrer arranged in the culture dish;

[0026] The body is configured to generate a changing magnetic field to drive the magnetic stirrer to rotate.

[0027] In an illustrative embodiment, a plurality of light sources are provided, and the plurality of light sources are detachably connected to the reaction chamber.

[0028] In an illustrative embodiment, it further includes an opening and closing mechanism disposed in the first chamber;

[0029] The opening and closing mechanism comprises:

[0030] a baffle, slidably connected to the irradiation cavity; and

[0031] The driving mechanism is connected to the baffle plate and is used to drive the baffle plate to slide between a first position for shielding the irradiation window and a second position for not shielding the irradiation window.

[0032] In an illustrative embodiment, a slide is provided on the irradiation cavity, and a track is provided in the slide;

[0033] The baffle is provided with a pulley rolling along the track;

[0034] The driving mechanism is an electric push rod, a hydraulic cylinder or a pneumatic cylinder.

[0035] In an exemplary embodiment, the irradiation cavity includes a bottom plate and a top shell covering the bottom plate, and the inner wall of the top shell is configured as a spherical mirror surface;

[0036] The vacuum ultraviolet collimated parallel light reactor also includes:

[0037] A temperature sensor, disposed in the first chamber, for detecting the temperature in the first chamber;

[0038] An ultraviolet detector, disposed in the first chamber, for detecting the intensity of the vacuum ultraviolet light;

[0039] a camera device, disposed in the second chamber, with a lens facing the bottom of the second chamber; and

[0040] The fan is disposed in the first chamber and configured to blow air toward the light source.

[0041] The present application also proposes a water treatment method, characterized in that, based on the vacuum ultraviolet collimated parallel light reactor as described above, the water treatment method comprises the following steps:

[0042] Placing the water sample to be processed in a culture dish, and placing the culture dish in the second chamber of the reaction chamber;

[0043] Delivering oxygen-free gas to the gas inlet of the reaction chamber so that the oxygen-free gas completely fills the first chamber and the second chamber;

[0044] The light source is driven to emit vacuum ultraviolet rays to vertically irradiate the water sample downward, and during the irradiation of the water sample, oxygen-free gas is continuously delivered to the air inlet of the reaction chamber.

[0045] When the vacuum ultraviolet collimated parallel light reactor is used to process a water sample, the water sample can be first placed in the second chamber of the reaction chamber, and then an anaerobic gas is injected into the air inlet of the reaction chamber, so that the air in the first chamber of the irradiation chamber and the second chamber of the reaction chamber is discharged from the air outlet of the irradiation chamber, and when the anaerobic gas fills the first chamber and the second chamber, the air in the first chamber and the second chamber is emptied. In this way, since there is no air in the first chamber and the second chamber, the vacuum ultraviolet light emitted by the light source will not be absorbed by oxygen and rapidly attenuated when propagating in the anaerobic gas, so that the vacuum ultraviolet light can be irradiated onto the water sample in the reaction chamber through the irradiation window, so that the water sample can undergo a light irradiation reaction, thereby improving the utilization rate of the vacuum ultraviolet light.

[0046] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0048] Figure 1 It is a front view of the vacuum ultraviolet collimated parallel light reactor in the embodiment of the present application;

[0049] Figure 2 It is a left view of the vacuum ultraviolet collimated parallel light reactor in the embodiment of the present application;

[0050] Figure 3 A top view of a vacuum ultraviolet collimated parallel light reactor in an embodiment of the present application;

[0051] Figure 4 It is a stereoscopic diagram of the vacuum ultraviolet collimated parallel light reactor in the embodiment of the present application. DETAILED DESCRIPTION

[0052] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. Although many possible feature combinations are shown in the drawings and discussed in the specific embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0053] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed in the present application may also be combined with any conventional features or elements to form a unique invention scheme. Any features or elements of any embodiment may also be combined with features or elements from other invention schemes to form another unique invention scheme. Therefore, it should be understood that any feature shown and / or discussed in the present application may be implemented individually or in any appropriate combination. Therefore, except for the limitations made according to the attached claims and their equivalents, the embodiments are not subject to other restrictions. In addition, various modifications and changes may be made within the scope of protection of the attached claims.

[0054] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not rely on the specific order of the steps described herein, the method or process should not be limited to the steps of the specific order described. As will be understood by those of ordinary skill in the art, other sequences of steps are also possible. Therefore, the specific sequence of the steps set forth in the specification should not be interpreted as a limitation to the claims. In addition, the claims for the method and / or process should not be limited to the steps of performing them in the order written, and those skilled in the art can easily understand that these sequences can be changed and still remain within the spirit and scope of the embodiments of the present application.

[0055] like Figures 1 to 4 As shown, Figures 1 to 4 The structure of a vacuum ultraviolet collimated parallel light reactor 100 in an embodiment of the present application is shown. The vacuum ultraviolet collimated parallel light reactor 100 comprises an irradiation chamber 3, a support 8, a base 1, a light source 2, a reaction chamber 4 and an oxygen-free gas supply device.

[0056] The base 1 is arranged on the ground. The base 1 can be constructed as a flat plate and laid flat on the ground. One end of the support 8 is connected to the base 1. The other end of the support 8 is connected to the irradiation cavity 3. The support 8 supports the irradiation cavity 3.

[0057] The irradiation cavity 3 is provided with a first chamber 30, an irradiation window 321 and an air outlet 311. The irradiation window 321 and the air outlet 311 are both connected to the first chamber 30. The irradiation window 321 is arranged at the bottom of the first chamber 30. The irradiation window 321 can be a through hole with a rectangular cross section. The air outlet 311 can be arranged at the top of the first chamber 30.

[0058] The reaction chamber 4 is connected to the bottom of the irradiation chamber 3 and is arranged below the irradiation window 321 of the irradiation chamber 3. The reaction chamber 4 is provided with a second chamber 40 and an air inlet 411. The top of the second chamber 40 is connected to the irradiation window 321. The air inlet 411 can be arranged on the side wall of the second chamber 40 and connected to the air inlet 411.

[0059] The light source 2 can emit vacuum ultraviolet light. The wavelength of the vacuum ultraviolet light is 100nm to 200nm. The light source 2 can be a low-pressure mercury vapor lamp (LPUV), and the wavelength of the vacuum ultraviolet light emitted by it is 185nm. The light source 2 can be provided with one or more light sources, which are arranged in the first chamber 30 of the irradiation cavity 3 and connected to the inner wall of the irradiation cavity 3. The light source 2 emits vacuum ultraviolet light to the irradiation window 321. The light source 2 can be arranged directly above the irradiation window 321.

[0060] The oxygen-free gas supply device is connected to the air inlet 411 of the irradiation chamber 3 through a pipeline. The oxygen-free gas supply device is used to deliver oxygen-free gas to the air inlet 411. The oxygen-free gas supply device can be a gas storage tank for containing oxygen-free gas. The oxygen-free gas is a gas that does not contain oxygen elements. The oxygen-free gas can be nitrogen, hydrogen or an inert gas. The inert gas can be helium, neon, argon, krypton or xenon.

[0061] When the vacuum ultraviolet collimated parallel light reactor 100 is used to treat the water sample 1j, the water sample 1j can be placed in the second chamber 40 of the reaction chamber 4 first, and then the oxygen-free gas is injected into the air inlet 411 of the reaction chamber 4, so that the air in the first chamber 30 of the irradiation chamber 3 and the second chamber 40 of the reaction chamber 4 is discharged from the air outlet 311 of the irradiation chamber 3, and the air in the first chamber 30 and the second chamber 40 is emptied when the oxygen-free gas fills the first chamber 30 and the second chamber 40. In this way, since there is no air in the first chamber 30 and the second chamber 40, the vacuum ultraviolet light emitted by the light source 2 will not be absorbed by oxygen and will be rapidly attenuated when propagating in the oxygen-free gas, so that the vacuum ultraviolet light can be irradiated to the water sample 1j in the reaction chamber 4 through the irradiation window 321, so that the water sample 1j can undergo a light irradiation reaction, thereby improving the utilization rate of the vacuum ultraviolet light.

[0062] In an illustrative embodiment, the reaction chamber 4 includes a plurality of cylinders 41 and a tray 42. The cross section of the cylinder 41 may be rectangular. The plurality of cylinders 41 are arranged in sequence downward from the reaction chamber 4. The central axes of the plurality of cylinders 41 extend vertically. The plurality of cylinders 41 are connected in sequence. The top of the cylinder 41 located at the top is connected to the reaction chamber 4 and is connected to the irradiation window 321. The cylinder 41 may be connected to the reaction chamber 4 by flux or screws. Of the two adjacent cylinders 41, the bottom end of the cylinder 41 located at the top is detachably connected to the top end of the cylinder 41 located at the bottom. A magnetic connection and / or a snap connection may be used between the two adjacent cylinders 41 to facilitate quick disassembly and assembly between the cylinders 41. The air inlet 411 is provided on the side wall of the cylinder 41 located at the top. There may be two air inlets 411, and the two air inlets 411 are spaced apart from each other.

[0063] The tray 42 is constructed as a roughly plate-like structure. The tray 42 covers the bottom end of the cylinder 41 located at the bottom. The tray 42 is detachably connected to the cylinder 41 located at the bottom. The tray 42 can be assembled to the bottom end of any cylinder 41 and detachably connected to the bottom end of the cylinder 41. The tray 42 is used to hold the water sample 1j.

[0064] In this way, the tray 42 and the plurality of cylinders 41 enclose the first chamber 30. Since the cylinders 41 and the cylinders 41 and the tray 42 are all detachably connected, the number of cylinders 41 constituting the reaction chamber 4 can be flexibly adjusted to control the vertical size of the first chamber 30, and then the distance between the light source 2 and the water sample 1j can be adjusted to achieve the purpose of adjusting the optical path of the vacuum ultraviolet light. For example, if the optical path required for this experiment is shorter, the number of cylinders 41 constituting the reaction chamber 4 can be reduced to 2 or 1, and then the tray 42 can be installed on the bottom cylinder 41; on the contrary, if the optical path required for this experiment is longer, the number of cylinders 41 constituting the reaction chamber 4 can be controlled to 3 or 4, and then the tray 42 can be installed on the bottom cylinder 41.

[0065] In an illustrative embodiment, the reaction chamber 4 further includes a seal. One or more seals may be provided. In the present embodiment, a seal is provided between each two adjacent cylinders 41, and the seal can block the gap between the two adjacent cylinders 41. The seal may be configured in an annular shape. Both ends of the seal may be provided with an annular groove, and the ends of the two adjacent cylinders 41 close to each other are respectively inserted into the two annular grooves. The seal is made of UV-resistant rubber.

[0066] In this way, a seal is provided between each two adjacent cylinders 41, which can improve the airtightness of the reaction chamber 4 and prevent the anaerobic gas from escaping from the gap between the two adjacent cylinders 41. The seal is made of UV-resistant rubber, which can slow down the rapid aging of the seal caused by strong ultraviolet radiation. In some examples, a seal is also provided between the tray 42 and the cylinder 41 located at the bottom to further enhance the airtightness of the reaction chamber 4.

[0067] In an illustrative embodiment, the vacuum ultraviolet collimated parallel light reactor 100 further includes a lifting platform 5 , a culture dish 1 h and a magnetic stirrer 6 .

[0068] The culture dish 1h is placed on the tray 42. The culture dish 1h is used to contain the water sample 1j. The culture dish 1h can be made of a transparent material, such as transparent glass.

[0069] The lifting platform 5 is arranged below the pallet 42. The lifting platform 5 can be a scissor lift. The scissor lift includes a scissor mechanism 51, a table 52, a base 53 and a hydraulic cylinder 54. The base 53 is arranged on the base 1. The table 52 is arranged above the base 53. The table 52 can be a flat plate structure and is arranged horizontally. The table 52 is located directly below the pallet 42. The table 52 is spaced apart from the base 53. The scissor mechanism 51 is arranged between the table 52 and the base 53. One end of the hydraulic cylinder 54 is connected to the base 53, and the other end is connected to the scissor mechanism 51. The hydraulic cylinder 54 can drive the scissor mechanism 51 to extend and shorten, thereby raising and lowering the height of the table 52.

[0070] The magnetic stirrer 6 includes a body 61 and a magnetic stirrer 62. The magnetic stirrer 62 is a magnet, which can be a permanent magnet. The magnetic stirrer 62 is arranged in the culture dish 1h. The body 61 is arranged on the table 52 of the lifting platform 5. The lifting platform 5 can drive the body 61 to rise and fall. The body 61 can generate a magnetic field with a change in polarity to drive the magnetic stirrer 62 to rotate, and the rotating magnetic stirrer 62 can stir the water sample 1j in the culture dish 1h.

[0071] In this way, the water sample 1j in the culture dish 1h can be stirred by driving the magnetic stirrer 62, so that the water sample 1j can be uniformly irradiated by the vacuum ultraviolet rays. At the same time, since the lifting platform 5 can adjust the height of the fuselage 61, after adjusting the number of cylinders 41, even if the height of the tray 42 and the culture dish 1h changes, the height of the fuselage 61 can be adjusted so that the magnetic stirrer 62 is always within the coverage of the magnetic field generated by the fuselage 61, and the fuselage 61 can effectively drive the magnetic stirrer 62 to rotate. In addition, when the tray 42 and the cylinder 41 are disassembled, the fuselage 61 is lowered, which can also make it more convenient to disassemble the tray 42 and the cylinder 41.

[0072] In an illustrative embodiment, a plurality of light sources 2 are provided, for example, 5 light sources 2. The plurality of light sources 2 can be detachably connected to the inner wall of the irradiation cavity 3. Lamp holders are provided on opposite sides of the first chamber 30 of the irradiation cavity 3. The light source 2 is configured as a lamp tube extending in the horizontal direction, and both ends of the light source 2 are detachably connected to the lamp holders on opposite sides of the first chamber 30. The plurality of light sources 2 are arranged on the same horizontal plane and are parallel to each other, and there is a gap between two adjacent light sources 2. The plurality of light sources 2 emit vacuum ultraviolet rays toward the irradiation window 321.

[0073] In this way, the number of light sources 2 can be adjusted by disassembling and assembling the light sources 2, thereby achieving the purpose of adjusting the intensity of the vacuum ultraviolet rays.

[0074] In an illustrative embodiment, the vacuum ultraviolet collimated parallel light reactor 100 also includes an opening and closing mechanism 9. The opening and closing mechanism 9 is arranged in the first chamber 30 and is located at the bottom of the first chamber 30. The opening and closing mechanism 9 includes a baffle 91 and a driving mechanism 92. The baffle 91 can be constructed as a rectangular flat plate. The area of ​​the baffle 91 is larger than the area of ​​the irradiation window 321. The baffle 91 can completely cover the irradiation window 321. The baffle 91 is slidably connected to the bottom wall of the first chamber 30, with one plate surface of the baffle 91 facing upward and the other plate surface facing downward. The baffle 91 can slide in the horizontal direction.

[0075] The driving mechanism 92 is connected to the baffle 91 and the irradiation chamber 3. The driving mechanism 92 is configured to drive the baffle 91 to slide between a first position and a second position. When the baffle 91 is in the first position, the baffle 91 covers the top of the irradiation window 321 to block the irradiation window 321. When the baffle 91 is in the second position, the baffle 91 is located at one side of the irradiation window 321 without blocking the irradiation window 321.

[0076] In this way, the user can control the opening and closing of the irradiation window 321 through the opening and closing mechanism 9. For example, when the light source 2 is a low-pressure mercury vapor lamp (LPUV), it takes a certain amount of time for the oxygen-free gas to replace the air in the first chamber 30 and the second chamber 40 during the initial startup. At this time, the vacuum ultraviolet rays with a wavelength of 185nm emitted by the low-pressure mercury vapor lamp will be strongly absorbed by the oxygen in the air to produce ozone. During this period of time, in order to avoid the attenuation of the vacuum ultraviolet rays in the air, the baffle 91 can be controlled to move to the first position to close the irradiation window 321. After this period of time, when the oxygen-free gas fills the first chamber 30 and the second chamber 40, the baffle 91 is controlled to move to the second position to open the irradiation window 321, so that the vacuum ultraviolet rays of 185nm can be irradiated onto the water sample 1j, thereby ensuring that the water sample 1j effectively absorbs and transmits the vacuum ultraviolet rays with a wavelength of 185nm. In addition, during the process of irradiating the water sample 1j, there is a need to intermittently sample the water sample 1j. During sampling, the baffle 91 can be controlled to move to the first position to close the irradiation window 321 to stop irradiating the second chamber 40. After sampling, the baffle 91 can be controlled to move to the second position to open the irradiation window 321 to reduce the damage of vacuum ultraviolet rays to the operator. In particular, when replacing the water sample 1j, the irradiation window 321 can be closed by the baffle 91 to block the irradiation of vacuum ultraviolet rays. The water sample 1j can be replaced without turning off the light source 2, which solves the problems of unstable light intensity caused by repeatedly turning on and off the light source 2 and too long preheating time of the light source 2.

[0077] In an exemplary embodiment, a slideway is provided on the irradiation cavity 3, and the slideway may be provided on the bottom wall of the first chamber 30. Two slideways may be provided, and the two slideways may be provided at intervals, and the two slideways may be provided near opposite sides of the first chamber 30. The two slideways extend in the same direction. A track is provided in each slideway.

[0078] A plurality of pulleys are provided on the baffle 91. The pulleys can rotate freely. A part of the pulleys rolls along one track, and another part of the pulleys rolls along another track.

[0079] The driving mechanism 92 may be an electric push rod, a hydraulic cylinder or a pneumatic cylinder. The driving mechanism 92 drives the baffle 91 to slide by extending and contracting. One end of the driving mechanism 92 is connected to the baffle 91, and the other end of the driving mechanism 92 is connected to the irradiation chamber 3.

[0080] The plurality of pulleys rolling along the two tracks respectively can reduce the friction between the baffle 91 and the irradiation chamber 3 , so that the baffle 91 slides more smoothly.

[0081] In an illustrative embodiment, the irradiation chamber 3 includes a bottom plate 32 and a top shell 31. The bottom plate 32 is configured as a flat plate. The top shell 31 is configured as a hemispherical shape. The top shell 31 is covered on the bottom plate 32. The air outlet 311 is arranged on the top shell 31. The irradiation window 321 is arranged in the middle of the bottom plate 32. The bottom plate 32 and the top shell 31 enclose a first chamber 30. The bottom plate 32 is the bottom wall of the first chamber 30, and the top shell 31 is the top wall of the first chamber 30. The inner wall of the top shell 31 is configured as a spherical mirror surface, and the surface of the bottom plate 32 facing the top shell 31 is configured as a plane mirror surface, so that the top shell 31 and the bottom wall can both reflect vacuum ultraviolet rays. In one embodiment, the irradiation chamber 3 is made of stainless steel, and the inner and outer walls of the irradiation chamber 3 are electrolytically polished to form a smooth mirror surface. In another embodiment, the inner wall of the irradiation chamber 3 is coated with a mirror coating, and the mirror coating can reflect vacuum ultraviolet rays. In one solution, the inner wall of the top shell 31 meets the mirror 2Raya requirement, ensuring a high Petri coefficient and ensuring that the vacuum ultraviolet rays can be fully reflected.

[0082] In this way, the inner wall of the top shell 31 is constructed as a spherical mirror surface, and the inner wall of the top shell 31 can evenly reflect the vacuum ultraviolet rays downward, ensuring that the vacuum ultraviolet rays are evenly and vertically irradiated downward.

[0083] In an illustrative embodiment, the vacuum ultraviolet collimated parallel light reactor 100 further includes a temperature sensor 1a. The temperature sensor 1a is disposed in the first chamber 30 and is used to detect the temperature in the first chamber 30. The temperature sensor 1a may be disposed on the bottom plate 32. The temperature sensor 1a can detect the temperature change in the first chamber 30 in real time.

[0084] In an illustrative embodiment, the vacuum ultraviolet collimated parallel light reactor 100 further includes an ultraviolet detector 1b. The ultraviolet detector 1b is disposed in the first chamber 30 and is used to detect the intensity of the vacuum ultraviolet light. The ultraviolet detector 1b may be disposed on the bottom plate 32.

[0085] In an illustrative embodiment, the vacuum ultraviolet collimated parallel light reactor 100 further includes a camera device 1g. The camera device 1g is disposed in the second chamber 40. The camera device 1g may be disposed on the inner wall of the cylinder 41 located at the top. The camera device 1g may be a miniature panoramic camera. The lens of the camera device 1g faces the bottom of the second chamber 40, that is, toward the tray 42 and the culture dish 1h.

[0086] The camera device 1g can capture the image of the water sample 1j in the culture dish 1h, so as to record and monitor the process status of the light reaction of the water sample 1j.

[0087] In an illustrative embodiment, the vacuum ultraviolet collimated parallel light reactor 100 further includes a fan 1c. The fan 1c is disposed in the first chamber 30 and is connected to the top shell 31 of the reaction chamber 4. The fan 1c blows air toward the light source 2. The fan 1c may be disposed at the center of the top of the first chamber 30, and the fan 1c blows air downward.

[0088] In this way, the fan 1c sends air to the light source 2, which can cool the light source 2 and prevent the light source 2 from being damaged due to excessive temperature.

[0089] In an illustrative embodiment, the vacuum ultraviolet collimated parallel light reactor 100 also includes a control box 7 and a cable 1f. The control box 7 is electrically connected to the camera 1g, the fan 1c, the ultraviolet detector 1b, the temperature sensor 1a, the lifting platform 5, the opening and closing mechanism 9, and the light source 2 through the cable 1f. The control box 7 is provided with a PLC controller, an operation panel, a display screen, a fault alarm light, a power indicator light, an emergency stop switch, and an operation indicator light. The PLC controller is a logic control unit of the vacuum ultraviolet collimated parallel light reactor 100, and the operation panel, the display screen, the fault alarm light, the power indicator light, the emergency stop switch, and the operation indicator light are all electrically connected to the PLC controller. A plurality of buttons are provided on the operation panel. The operator can interact with the vacuum ultraviolet collimated parallel light reactor 100 through the operation panel and send instructions to the vacuum ultraviolet collimated parallel light reactor 100. For example, the operator can control the opening and closing of the light source 2, the power of the light source 2, the opening and closing of the camera device 1g, the opening and closing of the magnetic stirrer 6, the opening and closing of the irradiation window 321, the height of the lifting platform 5, the start and stop of the fan 1c, etc. through the operation panel. The display screen can display the temperature in the first chamber 30 measured by the temperature sensor 1a, the light intensity of the vacuum ultraviolet light measured by the ultraviolet detector 1b, the image taken by the camera device 1g, etc. The fault alarm light is used to send an alarm signal when the temperature in the first chamber 30 measured by the temperature sensor 1a is greater than a preset threshold value, and the preset threshold value can be 55°C. The operator can intervene immediately when the temperature of the first chamber 30 is too high to prevent the light source 2 from being damaged due to excessive temperature, and can also avoid the problem of too fast evaporation of the water sample 1j. The power indicator light is used to indicate whether the vacuum ultraviolet collimated parallel light reactor 100 is powered on. The emergency stop switch is used to urgently cut off the power supply of the vacuum ultraviolet collimated parallel light reactor 100. The operation indicator light is used to indicate the operating status of the vacuum ultraviolet collimated parallel light reactor 100.

[0090] In an exemplary embodiment, a through hole for the cable 1f to pass through is provided on the irradiation cavity 3, and the cable 1f passes through the through hole. A sealing member is also provided at the through hole of the irradiation cavity 3, and the sealing member is used to block the gap between the cable 1f and the through hole.

[0091] In an exemplary embodiment, a first one-way valve is provided at the gas outlet 311 of the irradiation cavity 3, and the first one-way valve can only pass the gas flowing back to the first chamber 30. There are two gas outlets 311 of the irradiation cavity 3, and both gas outlets 311 are provided with a first one-way valve.

[0092] In this way, the gas in the first chamber 30 of the irradiation chamber 3 can only flow out from the gas outlet 311 of the irradiation chamber 3 , and the external air cannot enter into the first chamber 30 of the irradiation chamber 3 through the gas outlet 311 .

[0093] In an exemplary embodiment, a second one-way valve is provided at the gas inlet 411 of the reaction chamber 4, and the second one-way valve can only pass the gas flowing toward the second chamber 40. The reaction chamber 4 has two gas inlets 411, and both gas inlets 411 are provided with a second one-way valve.

[0094] In this way, the oxygen-free gas can only flow into the second chamber 40 of the reaction chamber 4 through the gas inlet 411 , but cannot flow out of the second chamber 40 of the reaction chamber 4 .

[0095] In an illustrative embodiment, the vacuum ultraviolet collimated parallel light reactor 100 further includes a safety valve 1d. The safety valve 1d is disposed on the top shell 31 of the reaction chamber 4. One end of the safety valve 1d is connected to the first chamber 30, and the other end of the safety valve 1d is connected to the external environment. Two safety valves 1d may be provided. The safety valve 1d is configured to open when the air pressure in the first chamber 30 is greater than or equal to an air pressure threshold, and the air pressure threshold may be slightly greater than the standard atmospheric pressure.

[0096] In this way, when the air pressure in the first chamber 30 is greater than the air pressure threshold, the safety valve 1d is opened to keep the air pressure in the first chamber 30 at a positive pressure.

[0097] In an illustrative embodiment, this embodiment also proposes a water treatment method, which includes the following steps:

[0098] Step S1: placing the water sample 1j to be processed in a culture dish 1h, and placing the culture dish 1h in the second chamber 40 of the reaction chamber 4;

[0099] The water sample 1j to be treated is an experimental sample for vacuum ultraviolet light reaction. The water sample 1j to be treated contains some impurities, which may be trace amounts that need to be eliminated in the water, organic matter that needs to be degraded, quasi-organic matter that needs to be degraded, or trace amounts of total organic carbon (TOC), or bacteria or viruses that need to be killed.

[0100] Step S2: using an oxygen-free gas supply device to deliver oxygen-free gas to the gas inlet 411 of the reaction chamber 4, so that the oxygen-free gas completely fills the first chamber 30 and the second chamber 40;

[0101] The oxygen-free gas supply device delivers oxygen-free gas to the gas inlet 411 of the reaction chamber 4 for 5 to 10 minutes, so that the air in the reaction chamber 4 and the irradiation chamber 3 can be evacuated, and the oxygen-free gas can fill the first chamber 30 and the second chamber 40 .

[0102] Step S3: driving the light source 2 to emit vacuum ultraviolet rays to irradiate the water sample 1 j vertically downward, and continuously supplying oxygen-free gas to the gas inlet 411 of the reaction chamber 4 during the irradiation of the water sample 1 j.

[0103] After the first chamber 30 and the second chamber 40 are filled with the oxygen-free gas, the light source 2 emits vacuum ultraviolet rays to vertically irradiate the water sample 1j downward, and the water sample 1j undergoes a photoreaction. At the same time, during the irradiation of the water sample 1j, the oxygen-free gas supply device continuously delivers oxygen-free gas to the air inlet 411 of the reaction chamber 4, so that the air pressure in the first chamber 30 and the second chamber 40 is greater than the external atmospheric pressure, and air cannot enter the first chamber 30 and the second chamber 40, thereby preventing the vacuum ultraviolet rays from being absorbed by the air.

[0104] In an illustrative embodiment, the water treatment method further includes step S2A after step S2 and before step S3.

[0105] Step S2A: Control the driving mechanism 92 to drive the baffle 91 to move to the first position to block the illumination window 321, turn on the light source 2, and after the light source 2 is turned on for a preset time, control the driving mechanism 92 to drive the baffle 91 to move to the second position so that the baffle 91 no longer blocks the illumination window 321.

[0106] The preset time is the time required for the anaerobic gas to replace the air in the first chamber 30 and the second chamber 40, and the preset time may be 10 to 15 minutes. In step S2A, within the preset time just after the light source 2 is turned on, the anaerobic gas is filled into the air inlet 411 to replace the air in the first chamber 30 and the second chamber 40. During this period, in order to prevent the vacuum ultraviolet rays from irradiating the water sample 1j, the baffle 91 can be controlled to move to the first position to close the irradiation window 321. After the preset time has passed, the baffle 91 is controlled to move to the second position to open the irradiation window 321, so that the 185nm vacuum ultraviolet rays can irradiate the water sample 1j, thereby ensuring the effective absorption and transmission of the vacuum ultraviolet rays by the water sample 1j.

[0107] At the same time, during this period, the oxygen-free gas supply device continuously delivers oxygen-free gas to the air inlet 411 of the reaction chamber 4, so that the air pressure in the first chamber 30 and the second chamber 40 is greater than the external atmospheric pressure, and the air cannot enter the first chamber 30 and the second chamber 40, thereby preventing the vacuum ultraviolet rays from being absorbed by the air. At the same time, the oxygen-free gas can continuously take away the heat in the irradiation chamber 3 and the reaction chamber 4, so that the temperature in the first chamber 30 and the second chamber 40 will not be too high.

[0108] In an illustrative embodiment, in step S3, the culture dish 1h is taken out from the second chamber 40 at preset intervals to sample the water sample 1j in the culture dish 1h, and the culture dish 1h is placed in the second chamber 40 after sampling the water sample 1j in the culture dish 1h. Before taking the culture dish 1h out of the second chamber 40, the driving mechanism 92 is controlled to drive the baffle 91 to move to the first position to close the irradiation window 321, and after placing the culture dish 1h into the second chamber 40, the driving mechanism 92 is controlled to drive the baffle 91 to move to the second position to open the irradiation window 321.

[0109] The operator controls the driving mechanism 92 to drive the baffle 91 to move to the first position to close the irradiation window 321 at preset time intervals, and then removes the tray 42 so that the culture dish 1h can be taken out from the second chamber 40. The operator can use a dropper to absorb some water samples 1j from the culture dish 1h, and test these water samples 1j to understand the light reaction process of the water samples 1j; after sampling, the culture dish 1h is placed on the tray 42, and then the tray 42 is reinstalled to the bottom end of the lowest cylinder 41, and then the driving mechanism 92 is controlled to drive the baffle 91 to move to the second position to open the irradiation window 321, so that the vacuum ultraviolet rays continue to irradiate the water samples 1j in the culture dish 1h.

[0110] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0111] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include at least one of the features.

[0112] In the description of the present application, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0113] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0114] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0115] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0116] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vacuum ultraviolet collimated parallel light reactor, characterized in that: include: An irradiation cavity body is provided with a first cavity, an irradiation window arranged at the bottom of the first cavity, and an air outlet connected to the first cavity; A support column, supporting the irradiation cavity; a light source, disposed in the first chamber and connected to the irradiation chamber, configured to emit vacuum ultraviolet rays toward the irradiation window; and A reaction chamber connected to the bottom of the irradiation chamber, provided with a second chamber whose top is connected to the irradiation window and an air inlet connected to the second chamber; The gas inlet is used to receive the oxygen-free gas so that the oxygen-free gas fills the first chamber and the second chamber, and the gas outlet is used to discharge the gas in the first chamber; The reaction chamber comprises: A plurality of cylinders are sequentially arranged downward from the reaction chamber and are sequentially connected; a tray, detachably connected to the bottom end of the lowermost cylinder and covering the bottom end; and, A sealing member, sealing the gap between each two adjacent cylinders; The uppermost cylinder is connected to the reaction chamber, the air inlet is arranged on the uppermost cylinder, two adjacent cylinders are detachably connected, and the tray can be detachably connected to the bottom end of any one of the cylinders; The vacuum ultraviolet collimated parallel light reactor further comprises an opening and closing mechanism arranged in the first chamber; The opening and closing mechanism comprises: a baffle, slidably connected to the irradiation cavity; and The driving mechanism is connected to the baffle plate and is used to drive the baffle plate to slide between a first position for shielding the irradiation window and a second position for not shielding the irradiation window.

2. The vacuum ultraviolet collimated parallel light reactor according to claim 1, characterized in that: Also includes: a first one-way valve, disposed at the gas outlet, and only allowing gas to flow toward and away from the first chamber; a second one-way valve, disposed at the gas inlet, and only allowing gas flowing toward the second chamber to pass through; as well as The safety valve is disposed in the irradiation chamber and communicated with the first chamber, and is configured to open when the air pressure in the first chamber is greater than or equal to an air pressure threshold.

3. The vacuum ultraviolet collimated parallel light reactor according to claim 1, characterized in that: Two adjacent cylinders are connected by magnetic attraction and / or snap-fit ​​connection.

4. The vacuum ultraviolet collimated parallel light reactor according to claim 1, characterized in that: Also includes: A lifting platform is arranged below the tray; a culture dish, placed on the tray; as well as, A magnetic stirrer, comprising a body arranged on the lifting platform and a magnetic stirrer arranged in the culture dish; The body is configured to generate a changing magnetic field to drive the magnetic stirrer to rotate.

5. The vacuum ultraviolet collimated parallel light reactor according to claim 1, characterized in that: A plurality of light sources are provided, and the plurality of light sources are detachably connected to the reaction chamber.

6. The vacuum ultraviolet collimated parallel light reactor according to claim 1, characterized in that: The irradiation cavity is provided with a slideway, and a track is provided in the slideway; The baffle is provided with a pulley rolling along the track; The driving mechanism is an electric push rod, a hydraulic cylinder or a pneumatic cylinder.

7. The vacuum ultraviolet collimated parallel light reactor according to any one of claims 1 to 6, characterized in that: The irradiation cavity comprises a bottom plate and a top shell covering the bottom plate, and the inner wall of the top shell is configured as a spherical mirror surface; The vacuum ultraviolet collimated parallel light reactor also includes: A temperature sensor, disposed in the first chamber, for detecting the temperature in the first chamber; An ultraviolet detector, disposed in the first chamber, for detecting the intensity of the vacuum ultraviolet light; a camera device, disposed in the second chamber, with a lens facing the bottom of the second chamber; and The fan is disposed in the first chamber and configured to blow air toward the light source.

8. A water treatment method, characterized in that: Based on the vacuum ultraviolet collimated parallel light reactor according to any one of claims 1 to 7, the water treatment method comprises the following steps: Placing the water sample to be processed in a culture dish, and placing the culture dish in the second chamber of the reaction chamber; Delivering oxygen-free gas to the gas inlet of the reaction chamber so that the oxygen-free gas completely fills the first chamber and the second chamber; The light source is driven to emit vacuum ultraviolet rays to vertically irradiate the water sample downward, and during the irradiation of the water sample, oxygen-free gas is continuously delivered to the air inlet of the reaction chamber.

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