Ballast water sterilization reactor based on photocatalytic production of hydrogen peroxide and method of use

Abstract

The application discloses a ballast water sterilization reactor based on photocatalytic production of hydrogen peroxide and a use method thereof. Hydrogen peroxide water solution is obtained through a hydrogen peroxide production module and is transmitted to a mixing module to be mixed with untreated ballast water to obtain a mixed solution. Ocean microorganisms in the mixed solution are killed through a sterilization module to realize treatment of the ballast water. The ballast water sterilization reactor has simple structure and convenient operation. Only light source, water and oxygen are needed to safely and greenly produce hydrogen peroxide and apply the hydrogen peroxide to ship ballast water sterilization. The ballast water sterilization reactor solves the defects of high energy consumption, high transportation cost and unsuitability for use on ships of the traditional anthraquinone method.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photocatalytic hydrogen peroxide production and sterilization technology, and in particular to a ballast water sterilization reactor based on photocatalytic hydrogen peroxide production and a use method thereof. BACKGROUND

[0002] With the rapid development of marine transportation, the indiscriminate discharge of ballast water has made the problem of marine pollution increasingly serious. The untreated ballast water directly discharged into the sea can cause the extinction of native marine organisms and other risks. Therefore, how to effectively treat ballast water has attracted widespread attention. Common ballast water treatment methods include electrochemistry, ultraviolet radiation, ozone, etc. However, these methods have obvious shortcomings. Compared with these traditional treatment methods, hydrogen peroxide (H2O2) sterilization provides a more green and environmentally friendly way to treat ballast water. H2O2 has high sterilization efficiency, and long-term use of H2O2 will not cause bacteria to develop resistance. The decomposition products of H2O2 are only water and oxygen, and no toxic by-products are produced during disinfection.

[0003] However, the current industrial method for large-scale production of H2O2 is anthraquinone method, but it has the disadvantages of consuming a large amount of energy, complex process, producing toxic waste liquid and relying on noble metal catalysts. At the same time, in order to save costs, H2O2 is usually concentrated before transportation. However, high-concentration H2O2 needs to be transported in special containers, and also has the risk of explosion. In actual use, high-concentration H2O2 also needs to be diluted to an appropriate concentration for use. Such a complicated and complex process obviously cannot be applied to ship ballast water sterilization. Therefore, there is an urgent need to find a green and safe in-situ production technology for H2O2. SUMMARY

[0004] The present application provides a ballast water sterilization reactor based on photocatalytic hydrogen peroxide production and a use method thereof to overcome the above technical problems.

[0005] In order to achieve the above purpose, the technical solution of the present application is:

[0006] A ballast water sterilization reactor based on photocatalytic hydrogen peroxide production, comprising a hydrogen peroxide production module based on photocatalytic production to obtain a hydrogen peroxide aqueous solution containing hydrogen peroxide;

[0007] a mixing module for mixing the hydrogen peroxide-containing aqueous solution with untreated ballast water;

[0008] and a sterilization module for killing marine microorganisms in the mixed ballast water;

[0009] and the hydrogen peroxide production module, the mixing module and the sterilization module are connected in sequence.

[0010] Further, the hydrogen peroxide production module comprises a first xenon lamp, a module body structure, a first liquid peristaltic pump, an oxygen cylinder and a gas flow meter;

[0011] The oxygen cylinder, the gas flow meter and the module body structure are sequentially connected;

[0012] The module body structure comprises a first upper cover plate, a silica gel sealing ring, a hydrophobic carbon paper loaded with a photocatalyst, a PTFE film and a first lower bottom plate;

[0013] The first upper cover plate and the first lower bottom plate are respectively provided with a liquid containing groove structure and a gas flow channel structure;

[0014] The first liquid peristaltic pump is communicated with one side of the liquid containing groove structure through a pipeline;

[0015] The oxygen cylinder, the gas flow meter and one side of the gas flow channel structure are communicated;

[0016] The silica gel sealing ring is arranged at the bottom end of the first upper cover plate, the PTFE film is arranged at the top end of the first lower bottom plate, and the hydrophobic carbon paper is arranged between the silica gel sealing ring and the PTFE film;

[0017] The first xenon lamp is arranged at the top end of the module body structure.

[0018] Further, the mixing module comprises a second liquid peristaltic pump, a third liquid peristaltic pump, a first one-way valve, a second one-way valve, a three-way joint and an untreated ballast water tank;

[0019] One end of the second liquid peristaltic pump is communicated with the other side of the liquid containing groove structure through a pipeline, and the other end of the second liquid peristaltic pump is connected with the input end of the three-way joint through a pipeline in sequence;

[0020] One end of the third liquid peristaltic pump is connected with the untreated ballast water tank through a pipeline, and the other end of the third liquid peristaltic pump is connected with the input end of the three-way joint through a pipeline in sequence;

[0021] The output end of the three-way joint is connected to the sterilization module.

[0022] Further, the sterilization module comprises a second xenon lamp, a second upper cover plate, a glass sheet loaded with a photocatalyst and a second lower bottom plate;

[0023] The glass sheet is installed in the mounting groove structure of the second lower bottom plate and forms an integrated structure with the second upper cover plate, and the second upper cover plate is provided with a sterilization groove structure, and the sterilization groove structure and the glass sheet form a flow channel;

[0024] The second xenon lamp is arranged at the top end of the integrated structure.

[0025] A method for using a ballast water sterilization reactor based on photocatalytic production of hydrogen peroxide, comprising the following steps:

[0026] S1: turn on the first xenon lamp, the oxygen cylinder and the gas flow meter;

[0027] and transport the deionized water to the liquid containing groove structure of the upper cover plate by turning on the first liquid peristaltic pump;

[0028] The oxygen output by the oxygen cylinder is transmitted to the gas flow groove structure of the first lower bottom plate through the gas flow meter, and is transmitted to the liquid containing groove structure through the PTFE membrane;

[0029] The first xenon lamp excites the photocatalyst loaded on the hydrophobic carbon paper to obtain first photo-generated electrons and first photo-generated holes;

[0030] The first photo-generated electrons are used to reduce oxygen to generate hydrogen peroxide;

[0031] The first photo-generated holes are used to oxidize water to generate hydrogen peroxide;

[0032] And the method for loading the photocatalyst on the hydrophobic carbon paper is

[0033] First, disperse C3N5 uniformly in anhydrous ethanol, then add 5% Nafion solution to obtain a C3N5 dispersion liquid, and finally uniformly spray the C3N5 dispersion liquid on the hydrophobic surface of the hydrophobic carbon paper, and the loading amount of the photocatalyst is 5 mg / cm2;

[0034] S2: mix the hydrogen peroxide aqueous solution obtained by the hydrogen peroxide production module with the untreated ballast water in the untreated ballast water tank by turning on the mixing module to obtain a mixed solution;

[0035] S3: turn on the second xenon lamp and transmit the mixed solution to the sterilization module through the three-way joint;

[0036] The second xenon lamp excites the photocatalyst loaded on the glass sheet to obtain second photo-generated electrons and second photo-generated holes for killing marine microorganisms in the untreated ballast water;

[0037] And the method for loading the photocatalyst on the glass sheet is

[0038] First, disperse BiCrO / Fe-MOF uniformly in anhydrous ethanol, then add 5% Nafion solution to obtain a BiCrO / Fe-MOF dispersion liquid, and finally uniformly spray the BiCrO / Fe-MOF dispersion liquid on the glass sheet, and the loading amount of the photocatalyst is 10 mg / cm2;

[0039] The second photo-generated electrons are used to oxidize the Fe in the photocatalyst to generate hydrogen peroxide2+ Chemical reaction occurs to obtain Fe 3+ with hydroxyl radicals, and the hydroxyl radicals are used to kill marine microorganisms in untreated ballast water, and the second photo-generated electrons are used to reduce Fe 3+ to Fe 2+ ;

[0040] The ballast water treated by the sterilization module is transmitted to a treated ballast water tank through a pipeline.

[0041] Beneficial effects: The application provides a ballast water sterilization reactor based on photocatalytic production of hydrogen peroxide and a use method. Hydrogen peroxide solution is obtained through a hydrogen peroxide production module and is transmitted to a mixing module to mix the hydrogen peroxide-containing aqueous solution with untreated ballast water to obtain a mixed solution. Marine microorganisms in the mixed solution are killed through a sterilization module to realize treatment of the ballast water. The structure is simple and convenient to operate. Only light source, water and oxygen are needed to safely and greenly produce hydrogen peroxide and apply it to ship ballast water sterilization. The defects of high energy consumption, high transportation cost and unsuitability for use on ships of the traditional anthraquinone method are solved. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0043] Figure 1 It is a schematic diagram of the ballast water sterilization reactor based on photocatalytic production of hydrogen peroxide of the application.

[0044] Figure 2 It is an exploded view of the hydrogen peroxide production module in the embodiment.

[0045] Figure 3 It is a whole schematic diagram of the hydrogen peroxide production module in the embodiment.

[0046] Figure 4 It is Figure 3 a sectional view along the direction of A-A.

[0047] Figure 5 It is a whole schematic diagram of the sterilization module in the embodiment.

[0048] Figure 6 It is an exploded view of the sterilization module in the embodiment.

[0049] Figure 7 It is Figure 5A cross-sectional view in the B-B direction;

[0050] Figure 8 An E. coli colony map for untreated ballast water and treated ballast water in this embodiment;

[0051] Figure 9 A flowchart for the method of using the ballast water sterilization reactor based on photocatalytic production of hydrogen peroxide in this embodiment.

[0052] In the figure: 110, hydrogen peroxide production module; 111, xenon lamp; 112, first liquid peristaltic pump; 113, first upper cover plate; 1130, liquid containing groove structure; 114, silica gel sealing ring; 115, hydrophobic carbon paper; 116, PTFE film; 117, oxygen cylinder; 118, gas flow meter; 119, first lower bottom plate; 1190, gas flow groove structure; 120, mixing module; 121, second liquid peristaltic pump; 122, first one-way valve; 123, three-way joint; 124, untreated ballast water tank; 125, third liquid peristaltic pump; 126, second one-way valve; 130, sterilization module; 131, second xenon lamp; 132, second upper cover plate; 1320, sterilization groove structure; 133, glass sheet; 134, second lower bottom plate; 135, treated ballast water tank. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0054] The present embodiment provides a ballast water sterilization reactor based on photocatalytic production of hydrogen peroxide, as shown in Figure 1 which includes a hydrogen peroxide production module 110 based on photocatalytic production to obtain a hydrogen peroxide aqueous solution, a mixing module 120 for mixing the hydrogen peroxide-containing aqueous solution with untreated ballast water, and a sterilization module 130 for killing marine microorganisms in the mixed ballast water; and the hydrogen peroxide production module 110 and the sterilization module 130 are transparent structures made of acrylic material, and the hydrogen peroxide production module 110, the mixing module 120, and the sterilization module 130 are connected in sequence.

[0055] In specific embodiments, as shown in Figures 2 to 4 the hydrogen peroxide production module 110 includes a first xenon lamp 111, a module body structure, a first liquid peristaltic pump 112, an oxygen cylinder 117, and a gas flow meter 118;

[0056] The oxygen cylinder 117, the gas flow meter 118 and the module body structure are sequentially connected;

[0057] The module body structure comprises a first upper cover plate 113, a silica gel sealing ring 114, a hydrophobic carbon paper 115 loaded with a photocatalyst, a PTFE film 116 and a first lower bottom plate 119; the hydrophobic carbon paper 115 loaded with a photocatalyst is used to provide a photocatalyst, and the PTFE film is used to isolate liquid and gas, preventing liquid from flowing into the first lower bottom plate 119;

[0058] The first upper cover plate 113 and the first lower bottom plate 119 are respectively provided with a liquid containing groove structure 1130 and a gas flow channel structure 1190, and liquid flow holes are formed on both sides of the liquid containing groove structure 1130; specifically, the length, width and height of the first upper cover plate 113 are (45-90mm) x (45-90mm) x (20-40mm), the length and width of the through groove structure are (20-40mm) x (18-39mm), and the diameter of the liquid flow pipeline is 1-3mm;

[0059] The length, width and height of the first lower bottom plate 115 are (45-90mm) x (45-90mm) x (10-20mm), the area of the gas flow channel structure 1190 is (20-40mm) x (20-40mm) x (9-18mm), and the diameter of the gas flow pipeline is 1-3mm;

[0060] The first liquid peristaltic pump 112 is communicated with one side of the liquid containing groove structure 1130 through a pipeline;

[0061] The oxygen cylinder 117, the gas flow meter 118 and the gas flow channel structure 1190 are communicated on one side;

[0062] The silica gel sealing ring 114 is arranged at the bottom end of the first upper cover plate 113, the PTFE film 116 is arranged at the top end of the first lower bottom plate 119, and the hydrophobic carbon paper 115 is arranged between the silica gel sealing ring 114 and the PTFE film 116, and the size of the carbon paper 115 is (20-40mm) x (20-40mm);

[0063] The first xenon lamp 111 is arranged at the top end of the module body structure.

[0064] In specific embodiments, the mixing module 120 comprises a second liquid peristaltic pump 121, a third liquid peristaltic pump 125, a first one-way valve 122, a second one-way valve 126, a three-way joint 123 and an untreated ballast water tank 124; the liquid peristaltic pump is used to deliver an aqueous solution containing hydrogen peroxide to the three-way joint 113, the one-way valve is used for liquid or gas to flow in only one direction, preventing reverse flow;

[0065] One end of the second liquid peristaltic pump 121 is connected to the other side of the liquid containing groove structure 1130 through a pipeline, and the other end of the second liquid peristaltic pump 121 is connected to the input end of the three-way joint 123 through a pipeline in sequence;

[0066] One end of the third liquid peristaltic pump 125 is connected to the untreated ballast water tank 124 through a pipeline, and the other end of the third liquid peristaltic pump 125 is connected to the input end of the three-way joint 123 through a pipeline in sequence;

[0067] The output end of the three-way joint 123 is connected to the sterilization module 130.

[0068] In a specific embodiment, as shown in Figures 5 to 7 The sterilization module 130 includes a second xenon lamp 131, a second upper cover plate 132, a glass sheet loaded with a photocatalyst 133, and a second lower bottom plate 134, and the second lower bottom plate 134 is provided with a recess structure at the top end which is matched with the glass sheet 133;

[0069] The glass sheet (133) is installed in the mounting groove structure (1340) of the second lower bottom plate (134) and forms an integrated structure with the second upper cover plate (132), and the second upper cover plate (132) is provided with a sterilization groove structure (1320), and the sterilization groove structure (1320) forms a flow-through channel with the glass sheet (133), and the two sides of the sterilization groove structure (1320) are provided with connecting hole structures which are connected to the two ends of the flow-through channel;

[0070] The second xenon lamp 131 is arranged at the top end of the integrated structure.

[0071] Specifically, the length, width and height of the second upper cover plate 132 are (117-234mm) x (56-112mm) x (15-30mm), and the width of the liquid flow pipeline connected to the connecting hole structure is 1-2mm;

[0072] The size of the glass sheet 133 is (26-52mm) x (77-154mm) x (2-4mm);

[0073] The length, width and height of the second lower bottom plate 134 are (117-234mm) x (56-112mm) x (10-20mm);

[0074] A use method of a ballast water sterilization reactor based on photocatalytic production of hydrogen peroxide, as shown in Figure 9 The use method comprises the following steps:

[0075] S1: Turn on the first xenon lamp 111, the oxygen cylinder 117 and the gas flow meter 118, and set the flow rate of the gas flow meter 118 to 100 sccm;

[0076] And by turning on the first liquid peristaltic pump 112 to transport the deionized water to the liquid containing groove structure 1130 of the upper cover plate 113, and set the flow rate of the first peristaltic pump 112 to 5 mL / min;

[0077] The oxygen output by the oxygen cylinder 117 is transmitted to the gas flow channel structure 1190 of the first lower bottom plate 119 through the gas flow meter 118, and is transmitted to the liquid containing groove structure 1130 through the PTFE film 116;

[0078] The first xenon lamp 111 excites the photocatalyst loaded on the hydrophobic carbon paper 115 to obtain the first photo-generated electron and the first photo-generated hole;

[0079] The first photo-generated electron is used to reduce oxygen to generate hydrogen peroxide;

[0080] The first photo-generated hole is used to oxidize water to generate hydrogen peroxide;

[0081] And the method for loading the photocatalyst on the hydrophobic carbon paper 115 is

[0082] First, disperse C3N5 uniformly in anhydrous ethanol, then add 5% Nafion solution to obtain a C3N5 dispersion liquid, and finally uniformly spray the C3N5 dispersion liquid on the hydrophobic surface of the hydrophobic carbon paper 115, and the loading amount of the photocatalyst is 5 mg / cm2;

[0083] S2: By turning on the mixing module 120, the hydrogen peroxide aqueous solution obtained by the hydrogen peroxide production module 110 is mixed with the untreated ballast water in the untreated ballast water tank 124 to obtain a mixed solution;

[0084] S3: Turn on the second xenon lamp 131 and transmit the mixed solution to the sterilization module 130 through the three-way joint 123, and set the flow rates of the second liquid peristaltic pump 121 and the third liquid peristaltic pump 125 to 5 mL / min;

[0085] The second xenon lamp 131 excites the photocatalyst loaded on the glass sheet 133 to obtain the second photo-generated electron and the second photo-generated hole for killing the marine microorganisms in the untreated ballast water;

[0086] And the method for loading the photocatalyst on the glass sheet 133 is

[0087] First, BiCrO / Fe-MOF is uniformly dispersed in anhydrous ethanol, then 5% Nafion solution is added to obtain a BiCrO / Fe-MOF dispersion, and finally the BiCrO / Fe-MOF dispersion is uniformly sprayed on the glass sheet 133, and the loading amount of the photocatalyst is 10 mg / cm2;

[0088] The second photo-generated electron is used to react with hydrogen peroxide and Fe 2+ in the photocatalyst to generate Fe 3+ and hydroxyl radicals (·OH), wherein the second photo-generated electron, hydrogen peroxide, and Fe 2+ in the photocatalyst undergo a chemical reaction, and the reaction mechanism is known in the art and will not be described here.

[0089] The hydroxyl radicals (·OH) are used to kill marine microorganisms in untreated ballast water, and the second photo-generated electron is used to reduce Fe 3+ to Fe 2+ .

[0090] The ballast water treated by the sterilization module 130 is transmitted to the treated ballast water tank 135 through a pipeline, and finally the untreated ballast water and the treated ballast water are sampled respectively, and the two kinds of ballast water are coated on the culture dish, the culture dish is incubated at 28°C for 48 hours, and the bacterial colonies are observed as shown in Figure 8 .

[0091] The role of the hydrogen peroxide production module 110 in this embodiment is to photocatalytically generate hydrogen peroxide. The principle is that the photocatalyst generates photo-generated electrons and photo-generated holes under the irradiation of suitable simulated light (natural light). The photo-generated electrons and the photo-generated holes migrate to the surface of the photocatalyst, respectively. The photo-generated holes oxidize water to generate hydrogen peroxide, and the photo-generated electrons reduce oxygen to generate hydrogen peroxide. The role of the mixed module 120 is to mix the aqueous solution containing hydrogen peroxide and the untreated ballast water. The role of the sterilization module 130 is to kill marine microorganisms in the ballast water. The principle is that Fe2+ and hydrogen peroxide can generate Fe3+ and hydroxyl radicals (·OH), and the hydroxyl radicals have a strong killing effect on marine microorganisms. Subsequently, Fe3+ is reduced to Fe2+ under the action of photo-generated electrons, thereby forming a cycle, and the sterilization module 130 continuously generates hydroxyl radicals to kill marine microorganisms.

[0092] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for using a ballast water sterilization reactor based on photocatalytic hydrogen peroxide production, characterized in that, Includes the following steps: S1: Turn on the first xenon lamp (111), oxygen cylinder (117) and gas flow meter (118); Deionized water is delivered to the liquid containment tank structure (1130) of the upper cover plate (113) by activating the first liquid peristaltic pump (112); The oxygen output from the oxygen cylinder (117) is transmitted to the gas flow channel structure (1190) of the first lower bottom plate (119) via the gas flow meter (118), and then transmitted to the liquid containment tank structure (1130) through the PTFE membrane (116). The first xenon lamp (111) excites the photocatalyst supported on the hydrophobic carbon paper (115) to obtain the first photogenerated electron and the first photogenerated hole; The first photogenerated electron is used to reduce oxygen and generate hydrogen peroxide; The first photogenerated hole is used to oxidize water and generate hydrogen peroxide; The method for loading a photocatalyst onto the hydrophobic carbon paper (115) is as follows: First, C3N5 was uniformly dispersed in anhydrous ethanol, then 5% Nafion solution was added to obtain a C3N5 dispersion. Finally, the C3N5 dispersion was uniformly sprayed onto the hydrophobic surface of hydrophobic carbon paper (115), with a photocatalyst loading of 5 mg / cm³. 2 ; S2: By turning on the mixing module (120), the hydrogen peroxide aqueous solution obtained by the hydrogen peroxide production module (110) is mixed with the untreated ballast water in the untreated ballast water tank (124) to obtain a mixed solution; S3: Turn on the second xenon lamp (131) and transfer the mixed solution to the sterilization module (130) through the three-way connector (123). The second xenon lamp (131) excites the photocatalyst supported on the glass plate (133) to obtain second photogenerated electrons and second photogenerated holes for the elimination of marine microorganisms in untreated ballast water; The method for loading the photocatalyst onto the glass slide (133) is as follows: First, BiCrO / Fe-MOF was uniformly dispersed in anhydrous ethanol, and then 5% Nafion solution was added to obtain a BiCrO / Fe-MOF dispersion. Finally, the BiCrO / Fe-MOF dispersion was uniformly sprayed onto a glass slide (133), with a photocatalyst loading of 10 mg / cm³. 2 ; The second photogenerated electron is used to react with Fe in the photocatalyst based on hydrogen peroxide. 2+ A chemical reaction occurs to obtain Fe. 3+ With hydroxyl radicals, and said hydroxyl radicals are used to disinfect marine microorganisms in untreated ballast water, the second photogenerated electrons are used to convert Fe... 3+ Reduced to Fe 2+ ; The ballast water treated by the sterilization module (130) is then transported to the ballast water treatment tank (135) via pipeline. The ballast water sterilization reactor for photocatalytic hydrogen peroxide production includes a hydrogen peroxide production module (110) for obtaining an aqueous solution containing hydrogen peroxide based on photocatalytic production; a mixing module (120) for mixing the aqueous solution containing hydrogen peroxide with untreated ballast water; and a sterilization module (130) for eliminating marine microorganisms in the mixed ballast water. The hydrogen peroxide production module (110), mixing module (120), and sterilization module (130) are connected in sequence. The mixing module (120) includes a second liquid peristaltic pump (121), a third liquid peristaltic pump (125), a first one-way valve (122), a second one-way valve (126), and a three-way connector. The head (123) and the untreated ballast water tank (124); one end of the second liquid peristaltic pump (121) is connected to the other side of the liquid container structure (1130) through a pipeline, and the other end of the second liquid peristaltic pump (121) is connected to the input end of the first one-way valve (122) and the three-way connector (123) in sequence through a pipeline; one end of the third liquid peristaltic pump (125) is connected to the untreated ballast water tank (124) through a pipeline, and the other end of the third liquid peristaltic pump (125) is connected to the input end of the second one-way valve (126) and the three-way connector (123) in sequence through a pipeline; the output end of the three-way connector (123) is connected to the sterilization module (130).

2. The method of using the ballast water sterilization reactor based on photocatalytic hydrogen peroxide production according to claim 1, characterized in that, The hydrogen peroxide production module (110) includes a first xenon lamp (111), a module body structure, a first liquid peristaltic pump (112), an oxygen cylinder (117), and a gas flow meter (118). The oxygen cylinder (117), gas flow meter (118), and module body structure are connected in sequence; The module body structure includes a first upper cover plate (113), a silicone sealing ring (114), a hydrophobic carbon paper loaded with a photocatalyst (115), a PTFE membrane (116), and a first lower base plate (119). Furthermore, the first upper cover plate (113) and the first lower bottom plate (119) are respectively provided with a liquid containment tank structure (1130) and a gas flow tank structure (1190). The first liquid peristaltic pump (112) is connected to one side of the liquid containment tank structure (1130) through a pipeline; The oxygen cylinder (117), the gas flow meter (118), and the gas flow channel structure (1190) are connected on one side; The silicone sealing ring (114) is disposed at the bottom end of the first upper cover plate (113), the PTFE membrane (116) is disposed at the top end of the first lower base plate (119), and the hydrophobic carbon paper (115) is disposed between the silicone sealing ring (114) and the PTFE membrane (116). The first xenon lamp (111) is located at the top of the module body structure.

3. The method of using the ballast water sterilization reactor based on photocatalytic hydrogen peroxide production according to claim 2, characterized in that, The sterilization module (130) includes a second xenon lamp (131), a second upper cover plate (132), a glass plate (133) loaded with a photocatalyst, and a second lower base plate (134). The glass plate (133) is installed in the mounting groove structure (1340) opened in the second lower base plate (134) and forms an integral structure with the second upper cover plate (132). The second upper cover plate (132) is provided with a sterilization tank structure (1320), and the sterilization tank structure (1320) and the glass plate (133) form a flow channel. The second xenon lamp (131) is located at the top of the integrated structure.

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