Catalytic oxidation reactor and complete equipment

Abstract

The application discloses a catalytic oxidation reactor and complete equipment, which are used for water purification. The catalytic oxidation reactor comprises a container, a medicament storage and delivery assembly and an ultraviolet lamp sleeve. The ultraviolet lamp sleeve is arranged in the container. An annular gap cavity is formed between the inner wall of the container and the outer wall of the ultraviolet lamp sleeve. The outlet of the medicament storage and delivery assembly is arranged in the annular gap cavity. The medicament storage and delivery assembly is used for delivering the stored oxidant to the annular gap cavity and exciting active free radicals under the catalysis of ultraviolet light. The oxidant and the active free radicals flow out of a plurality of small holes arranged on the side wall of the container into a water body, so as to purify and disinfect the water body. By jointly injecting the water body and the oxidant into the annular gap cavity between the ultraviolet lamp sleeve and the container, the active free radicals can be continuously and efficiently generated in the annular gap cavity, efficient water purification and intensified disinfection effect are realized, and the ultraviolet lamp sleeve and the container can be well cleaned.

Description

Technical Field

[0001] This invention relates to the field of water treatment in environmental engineering, and in particular to a catalytic oxidation reactor and a complete set of equipment. Background Technology

[0002] Ultraviolet lamps are environmentally friendly, pollution-free, and highly efficient water purification and disinfection devices. They come in various forms and categories, among which the most common is the ultraviolet lamp sleeve commonly used in ultraviolet disinfection equipment in water purification facilities. Due to its advantages such as ease of implementation, simple operation, and significant effects, it has a very wide range of applications.

[0003] The aforementioned ultraviolet lamp sleeve can emit ultraviolet light with a short wavelength (λ < 400 nm). Ultraviolet light can not only rapidly denature proteins, thereby effectively killing almost all bacteria and pathogens in the water, but also, when the wavelength is short and the dose is large, it can directly photolyze organic matter in the water (reactions 1-4).

[0004] R + hν(λ < 185nm) → R * (1)

[0005] R * →·R1+·CH2CH3 (2)

[0006] ·R1+hν(λ<185nm)→·I i (i = 1, 2, ..., n) (3)

[0007] ·I i +·I i →P (4)

[0008] Building upon conventional UV lamp disinfection and water purification technology, a highly efficient water purification technology synergistic with ultraviolet light and semiconductor photocatalytic materials has been developed by combining UV light with photocatalytic oxidation. This technology effectively stimulates the generation of reactive free radicals such as hydroxyl radicals (·OH) in water. Through the addition, substitution, electron transfer, and bond breaking interactions between these reactive free radicals and organic compounds, large organic molecules are degraded into smaller molecules, or even directly into carbon dioxide (CO2) and water (H2O), thus achieving water purification. These reactive free radicals also include excited-state oxygen atoms (O...). 1 D) Superoxide radicals (HO2) ·- / O2 ·- ), singlet oxygen ( 1 O2 and other similar substances also have strong oxidizing properties and can undergo mineralization reactions similar to ·OH to achieve water purification (reactions 5-8).

[0009] H₂O + hν → ·OH + ·H (5)

[0010] R+·OH→ROH (6)

[0011] R+·OH→·R+H2O (7)

[0012] R n +·OH→R n-1 +OH - (8)

[0013] Related studies have shown that the combined use of multiple oxidants and ultraviolet photocatalysis technology can further improve the disinfection and purification efficiency of water bodies, achieving significant improvements compared to using a single oxidant or ultraviolet photocatalysis alone. For example, the reaction of ozone with organic matter is selective and cannot completely decompose organic matter into CO2 and H2O; however, the combined use of ozone and ultraviolet photocatalysis technology can effectively improve water purification and disinfection efficiency. The working principle of the combined use of ozone and ultraviolet photocatalysis technology for water purification and deodorization is shown in reaction formula 9-11, where O3 represents ozone, UV represents ultraviolet radiation, hv represents photolysis, and O 1 D represents an excited-state oxygen atom, ·OH represents a hydroxyl radical, and H2O2 represents hydrogen peroxide.

[0014] O3+UV(or hν, λ<310nm)→O2+O( 1 D) (9)

[0015] O( 1 D) + H₂O → ·OH + ·OH → H₂O₂ (in water) (10)

[0016] O( 1 D) + H₂O → ·OH + ·OH (humid air) (11)

[0017] For example, the combined use of ozone and hydrogen peroxide can also produce a coupling enhancement effect, and its reaction principle is shown in reaction formula (12).

[0018] 2O3 + H2O2 → ·OH + ·OH + 3O2 (12)

[0019] Chlorine dioxide and hydrogen peroxide react to produce hypochlorous acid, a strong oxidizing agent.

[0020] 2ClO2 + H2O2 → 2HClO2 + O2 (13)

[0021] The combined use of hydrogen peroxide and ultraviolet photocatalysis also has a coupling enhancement effect:

[0022] H2O2+UV (or hν, λ≈200~280nm)→·OH+·OH (14)

[0023] Another example is the combination of chlorine dioxide solution and ultraviolet light (R represents organic reactant, R* represents organic reaction product):

[0024] R + ClO2 → R * +ClO2 - (15)

[0025] ClO2 - +hν(λ<300nm)→2O( 1 D)+Cl - (16)

[0026] However, on the one hand, the ultraviolet lamps in water purification facilities only perform ultraviolet disinfection, failing to fully utilize the inherent energy of the ultraviolet lamps to achieve the water purification effect of ultraviolet photocatalysis. On the other hand, ultraviolet lamps used for disinfection are usually encapsulated with a quartz tube for protection. The water comes into direct contact with the outer wall of the outer tube, and the ultraviolet lamps generate high temperatures during long-term operation, causing the outer wall of the outer tube to easily form scale, making cleaning very difficult. Summary of the Invention

[0027] The technical problem to be solved by this invention is to overcome the defects of conventional ultraviolet lamps, such as difficulty in effectively generating active free radicals, poor water purification effect, and easy scaling and cleaning of the outer tube. The invention proposes to make appropriate modifications to the ultraviolet lamp and to provide a catalytic oxidation reactor and complete set of equipment.

[0028] The present invention solves the above-mentioned technical problems through the following technical solution:

[0029] A catalytic oxidation reactor for water purification includes a container, a reagent storage and delivery assembly, and an ultraviolet lamp sleeve. The ultraviolet lamp sleeve is disposed inside the container, and an annular gap cavity is formed between the inner wall of the container and the ultraviolet lamp sleeve.

[0030] The outlet of the drug storage and delivery assembly is located in the annular gap cavity. The drug storage and delivery assembly is used to deliver the stored oxidant to the annular gap cavity. The sidewall of the container includes micropores, which are configured to allow liquid to flow unidirectionally from the inside of the annular gap cavity to the outside of the container.

[0031] The UV lamp sleeve and container are coaxially arranged.

[0032] In this solution, the combined action of the UV lamp sleeve and the oxidant effectively stimulates the generation of reactive free radicals such as hydroxyl radicals in the water. These reactive free radicals then interact with organic compounds in the water through addition, substitution, electron transfer, and bond breaking, causing large organic molecules to degrade into smaller molecules, or even directly into carbon dioxide and water, thus achieving water purification. This is particularly effective against persistent organic pollutants, antibiotics, endocrine disruptors, and other emerging pollutants. By placing the UV lamp sleeve inside the container, a ring-shaped cavity is formed between the two, concentrating the generated reactive free radicals within this cavity. This increases the contact between the high concentration of reactive free radicals and pollutants such as organic compounds in the water, preventing excessive loss or dilution of the reactive free radicals and improving oxidation efficiency and disinfection effectiveness. By injecting at least one oxidant into the annular gap cavity between the UV lamp sleeve and the container, the UV lamp sleeve and the water are isolated, avoiding direct contact between the UV lamp sleeve and the water being treated. This makes it difficult for the outer wall of the container to heat up, fundamentally preventing pollutants in the water from forming high-temperature scale on the UV lamp sleeve. Furthermore, the injected oxidant and the activated high-concentration active free radicals have a good cleaning effect on both the UV lamp sleeve and the side wall of the container.

[0033] Furthermore, by coaxially arranging the UV lamp sleeve and container, the volume of the annular gap cavity between the UV lamp sleeve and the inner wall of the container is consistent, forming a narrow space that continuously generates active free radicals. This also facilitates the uniform output of oxidant in the annular gap cavity, resulting in a more uniform concentration of oxidant and active free radicals in the water.

[0034] Preferably, the agent delivery assembly includes a plurality of agent dispensers, which are spaced apart on the container along the flow direction of the water, and the outlet of the agent dispenser is located in the annular gap cavity.

[0035] In this scheme, multiple reagent dispensers are arranged at axial intervals in the container to continuously output oxidant into the annular gap space, which improves the input stability and distribution uniformity of the oxidant. This allows the active free radicals at various positions in the flow direction within the container to maintain a high concentration, which is conducive to the efficient and continuous generation of active free radicals and improves the purification effect on the water.

[0036] Preferably, the reagent dispenser includes an annular body disposed in the annular gap cavity, and an oxidant outlet is provided on the annular body, with a plurality of outlets spaced apart circumferentially along the annular body.

[0037] In this scheme, by setting up an annular main body, the oxidant is uniformly output in the annular gap cavity between the ultraviolet lamp sleeve and the container. This is conducive to a more uniform concentration of oxidant in the annular gap cavity, which is beneficial to the continuous and efficient generation of active free radicals in the annular gap cavity, thereby improving the purification effect on the water.

[0038] Preferably, the container is a transparent tube with a plurality of micropores on its sidewall, and the inner and / or outer wall surfaces of the transparent tube are coated with an ultraviolet photocatalyst.

[0039] In this design, the container is constructed as a transparent tube, allowing ultraviolet light to be refracted or transmitted through it. Multiple micropores are formed on the sidewall of the transparent tube, enabling the high concentration of active free radicals generated within the annular gap cavity to flow out through these micropores into the water outside the transparent tube, thereby purifying the water outside the tube. Furthermore, coating the inner and / or outer walls of the transparent tube with an ultraviolet photocatalyst promotes ultraviolet catalysis under ultraviolet irradiation, increasing the efficiency of active free radical generation and enhancing the water purification effect of the catalytic oxidation reactor.

[0040] Preferably, the ultraviolet lamp sleeve is used in the disinfection process of the water purification facility, and a quartz outer sleeve is nested inside it.

[0041] In this solution, by modifying the ultraviolet lamps used for disinfection in water purification facilities and their quartz outer sleeves, it is possible to achieve the continuous and large-scale generation and diffusion of active free radicals, thereby significantly improving the water purification and disinfection performance, and making it easier to clean the ultraviolet lamp sleeves.

[0042] Preferably, the reagent storage and delivery assembly further includes a pressurization device connected to the reagent storage and delivery assembly for pressurizing and outputting the oxidant, and / or the reagent storage and delivery assembly further includes a flow control device for adjusting the output flow rate of the oxidant.

[0043] In this scheme, by setting up a pressurization device and a flow control device to adjust the output flow rate of the oxidant, it is beneficial to increase the concentration of oxidant and active free radicals in the water, thereby improving the purification effect of the complete set of equipment on the water.

[0044] Preferably, the catalytic oxidation reactor further includes a monitoring probe; the monitoring probe is used to detect the concentration of pollutants and / or the intensity of ultraviolet radiation in the water, and to provide feedback on the concentration of pollutants and / or the intensity of ultraviolet radiation in the water.

[0045] In this scheme, by setting up monitoring probes, the concentration of pollutants and / or the intensity of ultraviolet radiation in the water body can be monitored in real time. When the concentration of pollutants in the water body is too high or the intensity of ultraviolet radiation is insufficient, timely feedback can be provided. This also helps to adjust the output flow rate of the oxidant and the irradiation intensity of the ultraviolet lamp sleeve in a timely manner, which is conducive to the optimal allocation of resources.

[0046] Preferably, the catalytic oxidation reactor further includes an electrical control component, which is electrically connected to the ultraviolet lamp sleeve. The electrical control component is used to adjust the irradiation intensity of the ultraviolet lamp sleeve according to the pollutant concentration and ultraviolet irradiation intensity fed back by the monitoring probe.

[0047] In this scheme, when the concentration of pollutants in the water is too high or the intensity of ultraviolet irradiation is insufficient, the monitoring probe sends feedback to the electronic control component. The electronic control component then adjusts the output flow rate of the oxidant and the irradiation intensity of the ultraviolet lamp sleeve in a timely manner. This makes the adjustment of the oxidant concentration and / or the irradiation intensity of the ultraviolet lamp sleeve more convenient and more precise, which is beneficial to the purification effect of the catalytic oxidation reactor.

[0048] Preferably, the catalytic oxidation reactor includes a plurality of monitoring probes, which are disposed at least in the water body on the inner wall of the container and on the outer sidewall of the container.

[0049] In this scheme, the above-described setup enables monitoring of pollutant concentrations and ultraviolet radiation intensity at different locations within the catalytic oxidation reactor. When the monitoring probe is positioned on the inner wall of the container, it can monitor the ultraviolet radiation intensity inside the container, helping to determine the condition of the ultraviolet lamp sleeve, such as whether a malfunction has occurred, or to adjust the radiation intensity according to the electronic control components. When the monitoring probe is positioned in the water outside the container's sidewall, it can monitor both the ultraviolet radiation intensity and the pollutant concentration in the water, ensuring effective water purification.

[0050] A complete set of equipment, comprising multiple catalytic oxidation reactors arranged in parallel to each other, wherein the irradiation intensity at the midpoint between two adjacent catalytic oxidation reactors is sufficient to meet the disinfection requirements of the water body.

[0051] The positive and progressive effects of this invention are as follows:

[0052] (1) To achieve high-efficiency continuous excitation and diffusion of active free radicals, and to give full play to the water purification function of active free radicals, so as to maximize the value of the UV lamp equipment and significantly improve the water purification efficiency of the UV lamp equipment.

[0053] (2) By injecting water and oxides together into the annular gap cavity between the UV lamp sleeve and the newly added container, active free radicals are generated efficiently and continuously in this annular gap cavity. After the high concentration of active free radicals flows out from the small holes opened on the side wall of the container, they will produce a highly efficient purification and enhanced disinfection effect on the water outside the container, which can completely offset the slight loss that occurs when the ultraviolet light is transmitted or refracted out of the container (active free radicals and various oxidants have a further killing effect on microorganisms in the water). Overall, it can significantly improve the water purification and disinfection efficiency.

[0054] (3) By injecting at least one oxidant into the annular gap cavity between the UV lamp sleeve and the container, the UV lamp sleeve and the water are isolated, avoiding direct contact between the UV lamp sleeve and the treated water. This makes it difficult for the outer wall of the container to heat up, fundamentally preventing pollutants in the water from forming high-temperature scale on the UV lamp sleeve. In addition, the injected oxidant and the excited high-concentration active free radicals have a good cleaning effect on both the UV lamp sleeve and the side wall of the container. Attached Figure Description

[0055] Figure 1 This is a three-dimensional structural schematic diagram of a catalytic oxidation reactor according to an embodiment of the present invention.

[0056] Figure 2 This is a schematic diagram of the outer structure of the container of a catalytic oxidation reactor according to an embodiment of the present invention.

[0057] Figure 3 This is a schematic diagram of the internal structure of the container of a catalytic oxidation reactor according to an embodiment of the present invention.

[0058] Figure 4 This is a schematic diagram of the reagent dispenser of a catalytic oxidation reactor according to an embodiment of the present invention.

[0059] Figure 5 This is an isometric sectional view of a catalytic oxidation reactor according to an embodiment of the present invention.

[0060] Figure 6 for Figure 5 Enlarged 3D view at point A

[0061] Figure 7 for Figure 5 Enlarged 3D view at point B

[0062] Figure 8 The irradiation intensity at the outer wall of the ultraviolet lamp sleeve for the catalytic oxidation reactor proposed in this invention is 25000 W / m. 2 Distribution of UV irradiance intensity at different spacings on the outer side of the UV lamp sleeve under certain conditions

[0063] Figure 9This is a side view of the complete set of equipment proposed in this invention, which uses four sets of catalytic oxidation reactors in synergistic operation.

[0064] Figure 10 This is a schematic diagram illustrating the water purification principle of the complete set of equipment proposed in this invention, which uses four sets of catalytic oxidation reactors in synergistic operation.

[0065] Figure 11 The irradiation intensity at the outer wall of the ultraviolet lamp sleeve of the catalytic oxidation reactor described in this invention is 25000 W / m. 2 Simulation of UV irradiance distribution at different spacings on the outer side of the UV lamp sleeve under certain conditions (Phthon code)

[0066] Explanation of reference numerals in the attached figures:

[0067] Catalytic oxidation reactor 1

[0068] Container 11

[0069] Connector 101

[0070] Transparent tube body 102

[0071] Micropore 103

[0072] Catalyst 104

[0073] Drug connection tube 105

[0074] UV lamp sleeve 106

[0075] 107 ring-shaped main body

[0076] Outlet 108

[0077] Connecting rod 109

[0078] Fixed clamp 110

[0079] Positioning crank 111

[0080] Control point 112

[0081] Pharmaceutical storage and delivery component 2

[0082] Drug pumping assembly 3

[0083] Control Component 4

[0084] Operating Platform 5 Detailed Implementation

[0085] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0086] This embodiment provides a catalytic oxidation reactor 1, which is externally mounted on an ultraviolet lamp sleeve 106, such as Figures 1-3As shown, for water purification, the catalytic oxidation reactor 1 includes a container 11, a reagent storage and delivery assembly 2, and an ultraviolet lamp sleeve 106. The ultraviolet lamp sleeve 106 is disposed inside the container 11, and an annular gap cavity is formed between the inner wall of the container 11 and the ultraviolet lamp sleeve 106. The inlet of the container 11 is connected to the external water body, and the outlet of the reagent storage and delivery assembly 2 is disposed in the annular gap cavity. The side wall of the container 11 includes micropores 103, which are configured to allow liquid to flow unidirectionally from the inside of the annular gap cavity to the outside of the container 11. The reagent storage and delivery assembly 2 is used to transport the stored oxidant to the annular gap cavity.

[0087] The combined action of the UV lamp sleeve 106 and the oxidant effectively stimulates the generation of reactive free radicals such as hydroxyl radicals in the water. Through addition, substitution, electron transfer, and bond breaking interactions between these reactive free radicals and organic compounds, large organic molecules are degraded into smaller molecules, or even directly into carbon dioxide and water, thus achieving water purification. This is particularly effective against persistent organic pollutants, antibiotics, endocrine disruptors, and other emerging pollutants. By placing the UV lamp sleeve 106 inside the container 11, a ring-shaped cavity is formed between them, concentrating the generated reactive free radicals within this cavity. This allows the high concentration of reactive free radicals to react with the water outside the container 11, preventing excessive dilution or loss of the reactive free radicals and achieving highly efficient removal of various pollutants, thus improving oxidation efficiency and disinfection effectiveness.

[0088] In this embodiment, the ultraviolet lamp sleeve 106 is specifically an ultraviolet lamp sleeve 106 with an irradiation wavelength range of 100-400nm and a rated irradiation intensity range of 5000-50000W / m at the outer wall of the quartz outer sleeve of the ultraviolet lamp sleeve 106. 2 The oxidant is one or more of ozone, hydrogen peroxide, and chlorine dioxide. When multiple oxidants are used, they can work synergistically to promote the generation of a higher concentration of active free radicals in the catalytic oxidation reactor 1. In other alternative embodiments, depending on the purification effect or structural requirements, the UV lamp sleeve 106 can also be a UV lamp of other shapes, such as a UV bulb.

[0089] As a preferred implementation method, such as Figure 3 and Figure 5 As shown, the drug delivery assembly 2 includes multiple drug dispensers, which are spaced apart axially in the container 11, and the outlet of each drug dispenser is located in an annular gap cavity.

[0090] The reagent storage and delivery component 2 continuously delivers oxidant to the container 11. Multiple reagent dispensers are arranged at axial intervals in the container to continuously output oxidant into the annular gap space, which improves the input stability and distribution uniformity of the oxidant. This allows the active free radicals at each position in the flow direction within the container 11 to maintain a high concentration, which is beneficial for the continuous and efficient generation of active free radicals and improves the purification effect on the water.

[0091] As a preferred implementation method, such as Figure 4 As shown, the drug dispenser includes an annular body 107, which is disposed in an annular gap cavity. An outlet 108 is provided on the annular body 107, and multiple outlets 108 are arranged at intervals along the circumference of the annular body 107.

[0092] By setting up an annular main body 107, the oxidant is evenly output in the annular gap cavity between the ultraviolet lamp sleeve 106 and the container 11, which is conducive to a more uniform concentration in the annular gap cavity, and to the continuous and efficient generation of active free radicals, thereby improving the purification effect on the water.

[0093] In this embodiment, the container 11 is a cylindrical transparent tube 102 with a length of 1m and a thickness of 0.1cm. The gap between the inner wall and the outer wall of the UV lamp sleeve 106 is 1.0cm. A connector 101 is provided at one end of the transparent tube 102. Three reagent dispensers are provided in the direction of water flow. Each reagent dispenser is provided with an annular body 107. The reagent input component is connected to the annular body 107 through a reagent connecting pipe 105. The annular body 107 has an annular channel inside, which is connected to the outlet. Each annular body 107 is provided with six outlets 108, which are equally spaced along the circumference of the annular body 107. In other alternative embodiments, the transparent tube 102 can also be a variable column made of a material with high temperature resistance, high light transmittance, and high strength. The number of reagent dispensers and outlets 108 is not specifically limited.

[0094] In specific implementation, such as Figures 3-7 As shown, an outlet 108 is threadedly connected to the outer wall of the annular body 107. The top of the outlet 108 is tightly fitted to the inner wall of the transparent tube 102 to fix the annular body 107. A connecting rod 109 is connected between the outlets 108 on the same axis. A positioning crank rod 111 is fixedly connected to the front and rear outlets 108 on the axial direction of the transparent tube 102. The inner wall of the positioning crank rod 111 is flat against the front end of the outer wall of the UV lamp sleeve 106. A fixing clamp 110 is installed at the front end of the outer wall. The materials of the annular body 107, outlet 108, connecting rod 109, positioning crank rod 111, and fixing clamp 110 are all SS316L.

[0095] As a preferred implementation method, such as Figure 2 As shown, container 11 is a transparent tube 102, and a number of micropores 103 are provided on the side wall of the transparent tube 102. The inner or outer wall surface of the transparent tube 102 is coated with an ultraviolet photocatalyst 104.

[0096] The container 11 is designed as a transparent tube 102, allowing ultraviolet light to be refracted or transmitted outside the tube, thus purifying the water outside the tube. A continuous oxidation reaction zone is formed within the tube, improving the overall purification and disinfection effect. Multiple micropores 103 are provided on the sidewall of the transparent tube 102, allowing high-concentration active free radicals generated within the annular gap cavity to slowly flow out, purifying the water outside the tube. Coating the inner or outer wall of the transparent tube 102 with an ultraviolet photocatalyst 104 enables ultraviolet catalysis under ultraviolet irradiation, increasing the efficiency of active free radical generation and enhancing the water purification effect of the catalytic oxidation reactor 1.

[0097] Preferably, the transparent tube 102 is made of a material with high temperature resistance, high light transmittance and high strength. The micropores 103 are uniformly distributed in a mesh on the axially extending sidewall of the transparent tube 102, with a pore diameter of 0.5 cm and a spacing of 2 cm between two adjacent micropores 103. The catalyst 104 is one or more of black titanium, titanium dioxide, zinc oxide, tin oxide or zirconium dioxide.

[0098] As a preferred implementation method, such as Figure 1 and Figure 3 As shown, the ultraviolet lamp sleeve 106 is used for the disinfection process of the water purification facility, and it is nested with a quartz outer sleeve.

[0099] By modifying the ultraviolet lamps used for disinfection in water purification facilities and their quartz outer sleeves, it is possible to achieve the continuous and large-scale generation and diffusion of active free radicals, thereby significantly improving the water purification and disinfection performance, and making it easier to clean the ultraviolet lamp sleeves 106.

[0100] In a preferred embodiment, the reagent storage and delivery assembly 2 further includes a pressurizing device connected to the reagent storage and delivery assembly 2 for pressurizing and outputting the oxidant; and / or, the reagent storage and delivery assembly further includes a flow control device for adjusting the output flow rate of the oxidant.

[0101] In this scheme, the output flow rate of the oxidant is adjusted by setting up a pressurization device and a flow control device, which is beneficial to increasing the concentration of oxidant and active free radicals in the water, and thus improving the purification effect of the complete set of equipment on the water.

[0102] In this embodiment, as Figure 1 As shown, the pressurization device is a pressure pump. The reagent storage and delivery assembly 2 includes a reagent pumping assembly 3, which includes a pressure pump and a reagent storage tank. The pressure pump is located inside the reagent storage tank and pressurizes and pumps the oxidant from the tank into the annular gap cavity of the catalytic oxidation reactor 1. The reagent pumping assembly 3 is placed on the operating platform 5 outside the water purification structure.

[0103] In a preferred embodiment, the catalytic oxidation reactor 1 also includes a monitoring probe; the monitoring probe is used to detect the concentration of pollutants and / or the intensity of ultraviolet radiation in the water, and to provide feedback on the concentration of pollutants and / or the intensity of ultraviolet radiation in the water.

[0104] By setting up monitoring probes, the concentration of pollutants and the intensity of ultraviolet radiation at different locations in the catalytic oxidation reactor 1 can be monitored. When the monitoring probe is placed on the inner wall of the container 11, it can monitor the intensity of ultraviolet radiation inside the container 11, helping to determine the condition of the ultraviolet lamp sleeve, such as whether a malfunction has occurred, or to increase or decrease the radiation intensity based on adjustments to the electronic control components. When the monitoring probe is placed in the water outside the side wall of the container 11, it can monitor the intensity of ultraviolet radiation and the concentration of pollutants in the water, ensuring the water purification effect.

[0105] In a preferred embodiment, the catalytic oxidation reactor 1 also includes an electrical control component, which is electrically connected to the ultraviolet lamp sleeve 106. The electrical control component is used to adjust the irradiation intensity of the ultraviolet lamp sleeve 106 according to the pollutant concentration and ultraviolet irradiation intensity fed back by the monitoring probe.

[0106] When the concentration of pollutants in the water is too high or the intensity of ultraviolet irradiation is insufficient, the monitoring probe sends feedback to the electronic control component. The electronic control component then adjusts the output flow rate of the oxidant and the irradiation intensity of the ultraviolet lamp sleeve 106 in a timely manner. This makes it more convenient and precise to adjust the concentration of the oxidant or the irradiation intensity of the ultraviolet lamp sleeve 106, which is beneficial to the purification effect of the catalytic oxidation reactor 1.

[0107] In a preferred embodiment, the catalytic oxidation reactor 1 includes multiple monitoring probes, which are disposed at least on the inner wall of the container 11 and at the outlet of the container 11.

[0108] With the above setup, the pollutant concentration and / or ultraviolet irradiance intensity at different locations in the catalytic oxidation reactor 1 can be monitored. When the monitoring probe is installed on the inner wall of the container 11, it can monitor the ultraviolet irradiance intensity inside the container 11, helping to determine the condition of the ultraviolet lamp sleeve 106, such as whether a malfunction has occurred, or whether the irradiance intensity has been increased or decreased according to adjustments of the electronic control components. When the monitoring probe is installed on the outside of the container 11, it can monitor the ultraviolet irradiance intensity and pollutant concentration in the water flowing out of the container 11, ensuring the purification effect of the water flowing out of the container 11.

[0109] In this embodiment, as Figure 1 As shown, the monitoring probes and electrical control components both belong to control component 4. Control component 4 also includes corrosion-resistant wires and an alarm; the ultraviolet lamp sleeve 106, several monitoring probes, and the alarm are all electrically connected to the electrical control component via corrosion-resistant wires; several monitoring probes are placed in the water body to be treated, with at least one located on the inner wall of the porous transparent tube and at least one located on the outer wall of the transparent tube 102, enabling real-time monitoring of pollutant concentration and ultraviolet irradiation intensity in the water body. When the pollutant concentration in the water body is too high or the ultraviolet irradiation intensity is insufficient, the monitoring probes send feedback to the electrical control component, which promptly issues an alarm signal through the alarm, facilitating timely adjustment of the irradiation intensity of the ultraviolet lamp sleeve 106 and the intensity of the pressurized pump supplying the oxidant by the pressurization pump, thereby ensuring the purification effect on the water body. Among them, the electrical control component of the control component 4 is set on the operating platform 5 outside the water purification structure. The chemical pumping component 3 and the control component 4 can be connected to one or more ultraviolet lamp sleeves 106 and chemical storage and delivery components 2. The chemical pumping component 3 includes a pressurizing pump and a chemical storage tank (not shown in the figure).

[0110] This embodiment also provides a complete set of equipment consisting of multiple catalytic oxidation reactors. For example... Figure 9 and Figure 10 As shown in this embodiment, the complete set of equipment includes four catalytic oxidation reactors 1 arranged in parallel with each other, and the irradiation intensity at the midpoint of the distance between two adjacent catalytic oxidation reactors 1 can meet the basic disinfection conditions of the water body.

[0111] The midpoint between two adjacent diagonally opposite catalytic oxidation reactors 1 in the complete set of equipment is called control point 112. In this embodiment, the distance between control point 112 and the ultraviolet lamp sleeve 106 in the adjacent catalytic oxidation reactor 1 is 128cm. By monitoring the ultraviolet irradiance intensity of control point 112 and adjusting the power of the corresponding ultraviolet lamp, the ultraviolet radiation intensity of control point 112 can meet the disinfection conditions of the water body.

[0112] By monitoring the ultraviolet radiation intensity at the inner wall of the catalytic oxidation reactor 1 container 11 and adjusting the power of the corresponding ultraviolet lamp, the ultraviolet radiation intensity at the inner wall of the container 11 can meet the conditions for the oxidant to generate a large number of active free radicals under ultraviolet photocatalysis.

[0113] In this embodiment, the factory-rated irradiance at the outer wall of the ultraviolet lamp sleeve 106 is 25000 W / m. 2 The formula for the attenuation of the irradiance of a linear ultraviolet lamp in water is as follows, and its linear attenuation coefficient in water is 1m. -1 .

[0114]

[0115] in:

[0116] I′ — Illuminance at the observation point (lx, or W / m2)

[0117] E0 / L — Luminous flux per unit length of the lamp (lm / m, or W / m)

[0118] μ—the linear attenuation coefficient of light in water, typically >1 (m⁻¹).

[0119] r — Distance from the outer wall of the lamp tube to the observation point (m)

[0120] l — the variable in the calculus, from 0 to L1, or from 0 to L2(m).

[0121] L — Total length of the lamp tube (m)

[0122] Based on the above formula, a curve showing the relationship between the ultraviolet irradiance monitored by the monitoring probe and the distance between the inner walls of the ultraviolet lamp sleeve was fitted using Python programming, as shown below. Figure 8 As shown (Python encoding as shown) Figure 11 (As shown).

[0123] like Figure 8 As shown, the irradiance monitored at the outer wall of the UV lamp sleeve 106 (wall thickness 0.1 cm) was 25000 W / m. 2 The irradiation intensity is high, which can directly photolyze the water, generating a large number of active free radicals; the irradiation intensity monitored at the inner wall of the container 11 (the gap between the inner wall of the container 11 and the outer wall of the ultraviolet lamp sleeve 106 is 1.0 cm) is 2617 W / m². 2 This irradiation intensity enables the oxidant to generate a large number of active free radicals under ultraviolet photocatalysis; the irradiation intensity monitored at control point 112 (128.0 cm away from the inner wall of the ultraviolet lamp sleeve) outside the container 11 is 569 W / m. 2This irradiation intensity is sufficient to inactivate viruses, bacteria, and other microorganisms in water under ultraviolet light irradiation.

[0124] The initial radiation intensity detected at the outer wall of the UV lamp sleeve 106 (wall thickness 0.1 cm) decreased to 20300 W / m. 2 The irradiation intensity remains high and can directly photolyze the water, generating a large number of reactive free radicals; the irradiation intensity monitored at the inner wall of container 11 (the gap between the inner wall of container 11 and the outer wall of the UV lamp sleeve 106 is 1.0 cm) is 1917 W / m². 2 The irradiation intensity is insufficient to cause the oxidant to generate a large number of active free radicals under ultraviolet photocatalysis.

[0125] Secondly, the amount of oxidant injected was increased, and the outer wall of the ultraviolet lamp sleeve 106 and the side wall of the container 11 were cleaned. After cleaning, the irradiance at the inner wall of the container 11 was monitored to reach 2059 W / m². 2 However, this is still insufficient to enable the oxidant to generate a large number of active free radicals under ultraviolet photocatalysis.

[0126] Next, the power of the ultraviolet lamp was increased so that the monitoring irradiance at the inner wall of container 11 reached 2500 W / m². 2 This irradiation intensity is just sufficient to cause the oxidant to generate a large number of active free radicals under ultraviolet photocatalysis. The irradiation intensity monitored at control point 112 (128.0 cm from the inner wall of the ultraviolet lamp sleeve) outside the container 11 is 406 W / m². 2 The intensity of this irradiation is insufficient to inactivate viruses, bacteria, and other microorganisms in the water under ultraviolet light irradiation.

[0127] Finally, the power of the ultraviolet lamp was increased so that the irradiance monitored at the control point 112 (128.0 cm away from the inner wall of the ultraviolet lamp sleeve) outside the container 11 was 500 W / m. 2 The intensity of this irradiation is just enough to inactivate viruses, bacteria, and other microorganisms in the water under ultraviolet light irradiation.

[0128] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A catalytic oxidation reactor for water purification, characterized in that, The catalytic oxidation reactor includes a container, a reagent storage and delivery assembly, and an ultraviolet lamp sleeve. The ultraviolet lamp sleeve is disposed inside the container, and an annular gap cavity is formed between the inner wall of the container and the outer wall of the ultraviolet lamp sleeve. The main body of the pharmaceutical storage and delivery assembly stores at least one oxidant, and its outlet is located in the annular gap cavity. The pharmaceutical storage and delivery assembly is used to deliver the stored oxidant to the annular gap cavity. The sidewall of the container includes micropores, which are configured to allow liquid to flow unidirectionally from the inside of the annular gap cavity to the outside of the container. The ultraviolet lamp sleeve and the container are both coaxially arranged. The drug storage and delivery assembly includes multiple drug dispensers, which are spaced apart on the container along the container axis, and the outlet of each drug dispenser is located in the annular gap cavity. The drug dispenser includes an annular body disposed in the annular gap cavity, and an outlet is provided on the annular body, with a plurality of outlets spaced apart along the circumference of the annular body; The outer wall of the annular body is threaded with an outlet, and the top of the outlet is tightly fitted to the inner wall of the container.

2. The catalytic oxidation reactor as described in claim 1, characterized in that, The container is a transparent tube with a number of micropores on its sidewalls, and the inner and / or outer walls of the transparent tube are coated with an ultraviolet photocatalyst.

3. The catalytic oxidation reactor as described in claim 1, characterized in that, The ultraviolet lamp sleeve is used for the disinfection process of the water purification facility, and it is nested with a quartz outer sleeve.

4. The catalytic oxidation reactor as described in claim 1, characterized in that, The reagent storage and delivery assembly further includes a pressurization device connected to the reagent storage and delivery assembly for pressurizing and outputting the oxidant, and / or the reagent storage and delivery assembly further includes a flow control device for adjusting the output flow rate of the oxidant.

5. The catalytic oxidation reactor as described in claim 1, characterized in that, The catalytic oxidation reactor also includes a monitoring probe; the monitoring probe is used to detect the concentration of pollutants and / or the intensity of ultraviolet radiation in the water, and to provide feedback on the concentration of pollutants and / or the intensity of ultraviolet radiation in the water.

6. The catalytic oxidation reactor as described in claim 5, characterized in that, The catalytic oxidation reactor also includes an electrical control component, which is electrically connected to the ultraviolet lamp sleeve. The electrical control component is used to adjust the irradiation intensity of the ultraviolet lamp sleeve according to the pollutant concentration and ultraviolet irradiation intensity fed back by the monitoring probe.

7. The catalytic oxidation reactor as described in claim 5, characterized in that, The catalytic oxidation reactor includes multiple monitoring probes for monitoring pollutant concentrations in the water and / or monitoring ultraviolet radiation intensity; the multiple monitoring probes are at least located in the water on the inner wall of the container and on the outer sidewall of the container.

8. A complete set of equipment, characterized in that, The complete set of equipment is composed of multiple catalytic oxidation reactors as described in any one of claims 1-7 working together, and the irradiation intensity at the midpoint of the distance between two adjacent catalytic oxidation reactors is sufficient to meet the disinfection requirements of the water body.

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