Photocatalytic microchannel organic wastewater treatment device

Abstract

The application relates to the technical field of organic wastewater treatment, in particular to a photocatalytic micro-channel organic wastewater treatment device which comprises an outer cylinder, a micro-channel structure, a blockage self-cleaning structure and a light source, the micro-channel structure is provided with a core rod and a transparent reaction tube, the blockage self-cleaning structure is provided with a suspension part, an elastic element and an inner cylinder, a plurality of micro-channels are formed between the core rod with a plurality of spiral surfaces on the outer periphery and the inner peripheral wall of the reaction tube, organic wastewater enters the micro-channels from the bottom to the top to carry out photocatalytic reaction, the core rod can be movably installed in the reaction tube, therefore, along with the change of the flow of the organic wastewater entering the micro-channels, the core rod automatically moves up and down to loosen the particulate matters in the micro-channels or cut the particulate matters to be small, so that the particulate matters fall out of the micro-channels; meanwhile, once the micro-channels are blocked, the water level in the suspension cavity is lowered, the blockage self-cleaning structure is automatically triggered, and thus the particulate matters blocked in the micro-channels are self-cleaned.

Description

Technical Field

[0001] This invention relates to the field of organic wastewater treatment technology, and in particular to a photocatalytic microchannel organic wastewater treatment device. Background Technology

[0002] In recent years, the combination of photochemical reactions and continuous flow technology has attracted increasing attention from researchers in scientific research institutions and industry. This combination can significantly shorten reaction time, improve reaction selectivity and safety, and offers advantages in many aspects that traditional flask (reactor) reactions cannot match.

[0003] The design of microchannel continuous flow reactors, resulting from the combination of photochemical reactions and continuous flow technology, is crucial for photocatalytic applications. These devices have already seen some use in homogeneous organic synthesis. Irradiation can significantly improve yields and reduce reaction risks. However, the micrometer-scale channel size and highly complex internal structure of microchannel reactors make them extremely prone to clogging, and cleaning them is also very difficult. Currently, clogging in microreactors is the biggest obstacle to their replacement of batch reactors.

[0004] In the field of wastewater treatment within the environmental protection industry, photocatalysis technology has not yet been widely applied, and microchannel reactors combining photocatalysis and microchannel technology are even rarer. The main reason is that the photocatalytic process in environmental wastewater treatment requires the participation of a corresponding photocatalyst, and photocatalyst particles are more likely to cause clogging in microchannel reactors. Furthermore, wastewater in the treatment process inevitably contains particulate matter, which can also easily clog the reactor, rendering it ineffective. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in order to solve the problem that photocatalytic microchannel reactors in the prior art are prone to clogging when treating organic wastewater, a photocatalytic microchannel organic wastewater treatment device is provided.

[0006] The technical solution adopted by this invention to solve its technical problem is: a photocatalytic microchannel organic wastewater treatment device, comprising:

[0007] The outer cylinder has an inner cavity, in which an upper partition and a lower partition are fixed. The upper partition is located above the lower partition, and a liquid inlet cavity is formed between the lower partition and the bottom inner wall of the inner cavity. The liquid inlet is connected to the liquid inlet cavity.

[0008] The microchannel structure has a core rod and a transparent reaction tube. The core rod has at least three sidewalls in its circumferential direction, and each sidewall is a helical surface extending along the axial direction of the core rod. One end of the reaction tube is fixedly connected to an upper partition plate, and the other end is fixedly connected to a lower partition plate. The core rod is movably installed inside the reaction tube, and each helical surface forms a helical microchannel with the inner circumferential wall of the reaction tube.

[0009] The self-cleaning structure includes a suspending element, an elastic element, and an inner cylinder. The inner cylinder is fixedly connected to an upper partition, forming a suspension cavity between the inner wall of the inner cylinder and the upper partition. The liquid inlet cavity is connected to the suspension cavity through microchannels. The upper end of the outer peripheral wall of the inner cylinder has an upper liquid outlet with a cross-sectional area of ​​A, and the lower end of the outer peripheral wall of the inner cylinder has a lower liquid outlet with a cross-sectional area of ​​B. Both the upper and lower liquid outlets are connected to the suspension cavity. The suspending element is disposed in the suspension cavity and located below the upper liquid outlet. When the suspending element is completely submerged in organic wastewater, the buoyancy it experiences is greater than its weight. The sum of the cross-sectional areas of all microchannels between a single core rod and its outer reaction tube is C, where B < C and C < A + B. The top end of the core rod extends upward to a hanging rod inserted into the suspension cavity. The upper end of the elastic element is fixedly connected to the hanging rod, and the lower end of the elastic element is fixedly connected to the suspending element.

[0010] The light source is located in the inner cavity, between the upper and lower partitions.

[0011] Furthermore, the upper surface of the inner cylinder has a window hole through which the lifting rod passes, and the upper end of the lifting rod is fixed with a top plate. The height of the window hole is greater than the height of the upper liquid outlet.

[0012] Furthermore, the microchannel structure and the self-cleaning blockage structure are both multiple, each core rod corresponds to a reaction tube, the hanger rod corresponds one-to-one with the suspension chamber, the core rod is movably installed in the corresponding reaction tube, and the hanger rod is inserted into the corresponding suspension chamber;

[0013] A drain sleeve is fixed on the outer cylinder. The drain sleeve is located above the upper partition. A liquid outlet cavity is formed between the drain sleeve, the upper partition, and the outer cylinder. The upper liquid outlet and the lower liquid outlet are both connected to the liquid outlet cavity. A main liquid outlet communicating with the liquid outlet cavity is opened on the outer wall of the outer cylinder. The main liquid outlet is located below the lower liquid outlet.

[0014] Furthermore, the elastic element is a spring, the suspension component is annular, and both the suspension component and the spring are sleeved on the outside of the boom.

[0015] Furthermore, the reaction tube is a quartz tube.

[0016] Furthermore, the core rod is made of metal.

[0017] Furthermore, the outer peripheral wall of the core rod is in contact with the inner wall of the reaction tube.

[0018] Furthermore, the cross-section of the core rod is square, regular pentagon, or regular hexagon.

[0019] Furthermore, the light source is a lamp tube, which is fixed between the upper partition and the lower partition.

[0020] Furthermore, the bottom of the outer cylinder has a drain port that communicates with the liquid inlet chamber, and a valve is provided on the drain port.

[0021] The beneficial effects of this invention are as follows: The photocatalytic microchannel organic wastewater treatment device of this invention utilizes a core rod with multiple helical surfaces on its outer periphery to form multiple microchannels between the core rod and the inner wall of the reaction tube, allowing organic wastewater to enter the microchannels from bottom to top for photocatalytic reaction. During this process, since the core rod is installed inside the reaction tube and can move up and down, it automatically moves up and down as the flow rate of organic wastewater entering the microchannel changes, loosening or shearing the particles in the microchannel to make them fall out of the microchannel. At the same time, once the microchannel becomes blocked, the water level in the suspension chamber drops, and the self-cleaning structure is automatically triggered, thereby realizing the self-cleaning of the blocked particles in the microchannel and ensuring stable operation of the equipment. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the photocatalytic microchannel organic wastewater treatment device of the present invention;

[0024] Figure 2 yes Figure 1 A magnified view of part A in the diagram;

[0025] Figure 3 This is a front view schematic diagram of the core rod;

[0026] Figure 4 yes Figure 3 Schematic diagram of the BB-direction section;

[0027] Figure 5 This is a three-dimensional schematic diagram of one side of the core rod;

[0028] Figure 6 This is a three-dimensional schematic diagram of the other side of the core rod.

[0029] In the diagram: 1. Outer cylinder; 101. Liquid inlet chamber; 102. Liquid inlet; 103. Drain outlet;

[0030] 2. Upper partition, 3. Lower partition, 4. Core rod, 401. Helical surface, 402. Hanging rod, 403. Top plate, 5. Reaction tube, 6. Suspension component, 7. Elastic element;

[0031] 8. Inner cylinder; 801. Suspension chamber; 802. Upper liquid outlet; 803. Lower liquid outlet; 804. Window;

[0032] 9. Drainage sleeve; 901. Liquid outlet chamber; 902. Main liquid outlet; 10. Microchannel; 11. Light source; 12. Dirt screen. Detailed Implementation

[0033] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention, and the orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be limiting, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0034] Example 1

[0035] like Figure 1-6 As shown, a photocatalytic microchannel organic wastewater treatment device includes an outer cylinder 1, a microchannel structure, a self-cleaning clogging structure, and a light source 11.

[0036] The outer cylinder 1 has an inner cavity, in which an upper partition 2 and a lower partition 3 are fixed. The upper partition 2 is located above the lower partition 3. The lower partition 3 and the bottom inner wall of the inner cavity form a liquid inlet chamber 101. The liquid inlet 102 is connected to the liquid inlet chamber 101.

[0037] The microchannel structure has a core rod 4 and a transparent reaction tube 5. The core rod 4 has at least three sidewalls in its circumferential direction. Each sidewall is a helical surface 401 extending along the axial direction of the core rod 4. One end of the reaction tube 5 is fixedly connected to the upper partition 2 and the other end is fixedly connected to the lower partition 3. The core rod 4 is movably installed in the reaction tube 5, and each helical surface 401 forms a helical microchannel 10 with the inner circumferential wall of the reaction tube 5.

[0038] The self-cleaning structure for clogging includes a suspension element 6, an elastic element 7, and an inner cylinder 8. The inner cylinder 8 is fixedly connected to the upper partition 2, forming a suspension cavity 801 between the inner wall of the inner cylinder 8 and the upper partition 2. The liquid inlet cavity 101 is connected to the suspension cavity 801 through microchannels 10. The upper end of the outer peripheral wall of the inner cylinder 8 has an upper liquid outlet 802 with a cross-sectional area of ​​A, and the lower end of the outer peripheral wall of the inner cylinder 8 has a lower liquid outlet 803 with a cross-sectional area of ​​B. Both the upper liquid outlet 802 and the lower liquid outlet 803 are connected to the suspension cavity 801. The suspension element 6 is disposed in the suspension cavity 801 and located below the upper liquid outlet 802. When the suspension element 6 is completely submerged in the organic wastewater, the buoyancy it experiences is greater than the weight of the suspension element 6. The sum of the cross-sectional areas of all microchannels 10 between a single core rod 4 and its outer reaction tube 5 is C, where B < C and C < A + B, i.e., the cross-sectional area of ​​the lower liquid outlet 803 is... The cross-sectional area of ​​the microchannels 10 between the single core rod 4 and its outer reaction tube 5 is less than the sum of the cross-sectional areas of the upper outlet 802 and the lower outlet 803. The cross-sectional area of ​​the microchannels 10 between the single core rod 4 and its outer reaction tube 5 is greater than the sum of the cross-sectional areas of the microchannels 10. When the microchannels 10 between the core rod 4 and the reaction tube 5 are blocked, the amount of organic wastewater entering the suspension chamber 801 in the microchannels 10 is reduced or even stopped. The water in the suspension chamber 801 is gradually discharged from the lower outlet 803, and the water level in the suspension chamber 801 drops. When completely blocked, the organic wastewater in the suspension chamber 801 will drop to the position of the lower outlet 803. The top of the core rod 4 extends upward with a hanging rod 402 inserted into the suspension chamber 801. The upper end of the elastic element 7 is fixedly connected to the hanging rod 402, and the lower end of the elastic element 7 is fixedly connected to the suspension component 6.

[0039] The light source 11 is disposed in the inner cavity and is located between the upper partition 2 and the lower partition 3.

[0040] This photocatalytic microchannel organic wastewater treatment device utilizes a core rod 4 with multiple spiral surfaces 401 on its outer periphery to form multiple microchannels 10 between the core rod 4 and the inner wall of the reaction tube 5. Organic wastewater enters the microchannels 10 from bottom to top for photocatalytic reaction. During this process, because the core rod 4 is vertically movable within the reaction tube 5, it automatically moves up and down as the flow rate of organic wastewater into the microchannels 10 changes. This loosens or shears the particles within the microchannels 10, causing them to fall out of the microchannels 10. Meanwhile, once the microchannel 10 becomes blocked, the water level in the suspension chamber 801 drops, and the volume of the suspended component 6 submerged in the organic wastewater decreases accordingly. The buoyancy of the suspended component 6 also decreases or even disappears. Without buoyancy as support, both the suspended component 6 and the core rod 4 will descend. When the suspended component 6 descends and hits the upper partition 2, the presence of the elastic element 7 will cause the core rod 4 to vibrate. Combined with the displacement and vibration of the core rod 4, the particles blocking the microchannel 10 will loosen and fall downward, thereby achieving self-cleaning of the blockage in the microchannel 10.

[0041] The upper surface of the inner cylinder 8 has a window hole 804 through which the hanger 402 passes. The upper end of the hanger 402 is fixed with a top plate 403. The height of the window hole 804 is greater than the height of the upper liquid outlet 802. The design of the window hole 804 allows the hanger 402 to be manually held from the window hole 804 when the blockage is severe, so as to drive the core rod 4 to move up and down quickly over a long distance, which can better remove the blockage particles in the microchannel 10.

[0042] Multiple microchannel structures and self-cleaning structures are provided to improve the treatment efficiency of organic wastewater. Each core rod 4 corresponds to a reaction tube 5, and the hanging rod 402 corresponds one-to-one with the suspension chamber 801. The core rod 4 is movably installed in the corresponding reaction tube 5, and the hanging rod 402 is inserted into the corresponding suspension chamber 801.

[0043] A drainage sleeve 9 is fixed on the outer cylinder 1. The drainage sleeve 9 is located above the upper partition 2. A liquid outlet chamber 901 is formed between the drainage sleeve 9, the upper partition 2 and the outer cylinder 1. The upper liquid outlet 802 and the lower liquid outlet 803 are both connected to the liquid outlet chamber 901. A total liquid outlet 902 connected to the liquid outlet chamber 901 is opened on the outer wall of the outer cylinder 1. The total liquid outlet 902 is located below the lower liquid outlet 803. This allows the organic wastewater discharged from each suspension chamber 801 to converge into the liquid outlet chamber 901 for centralized discharge.

[0044] The elastic element 7 can be a spring, and the suspension element 6 is annular. Both the suspension element 6 and the spring are sleeved on the outside of the boom 402. The boom 402 can be used to constrain the suspension element 6 so that it moves up and down approximately along the axis of the boom 402. The suspension element 6 can be made of plastic, and a hollow structure can also be set inside it to increase buoyancy.

[0045] The reaction tube 5 is a quartz tube so that the light emitted by the light source 11 can pass through the reaction tube 5 to irradiate the microchannel 10; both the upper partition 2 and the lower partition 3 can be provided with through holes, and the two ends of the reaction tube 5 are respectively inserted into the through holes of the upper partition 2 and the lower partition 3. The two ends of the reaction tube 5 can be glued to the through holes to achieve a sealed and fixed connection with the through holes of the upper partition 2 and the lower partition 3.

[0046] The core rod 4 is made of a transition metal or a superalloy containing one or more transition metals. This embodiment does not make any special limitation on this. In this embodiment, the core rod 4 can be made of metals such as titanium, iron, and manganese. The processing involves twisting a metal rod with a square, pentagonal, or hexagonal cross-section into a twist shape to form the core rod 4. For example, after twisting a metal rod with a quadrilateral cross-section into the core rod 4, the cross-section of the core rod 4 remains quadrilateral. The core rod 4 can be tangent to the inner wall of the reaction tube 5. After twisting into a twist shape, the core rod 4 is calcined to 400-600°C and placed in air to be blown with water vapor at a temperature greater than 100°C to form an oxide layer on the surface. The oxide layer on the surface of the core rod 4 can act as a photocatalyst, which is equivalent to the core rod 4 having a corresponding photocatalyst loaded on its surface.

[0047] It is worth noting that the surface of the core rod 4 can also be coated or electroplated using existing technologies to form a photocatalyst layer; or even, the surface of the core rod 4 does not contain a photocatalyst, but the organic wastewater is first mixed with the photocatalyst particles and then enters the liquid inlet 101 from the liquid inlet 102, and then flows upward into the microchannel 10. With the light irradiated by the light source 11, a photocatalytic reaction occurs in the microchannel 10 to degrade the organic pollutants in the organic wastewater.

[0048] The outer peripheral wall of the core rod 4 is attached to the inner wall of the reaction tube 5, so that multiple unconnected spiral microchannels 10 are formed between a single core rod 4 and the reaction tube 5, and one spiral surface 401 of the core rod 4 corresponds to one microchannel 10; the more sides the core rod 4 has in its cross-section, the more spiral surfaces 401 there are in its circumferential direction, and the more microchannels 10 are formed between the core rod 4 and the reaction tube 5, but the cross-sectional area of ​​a single microchannel 10 will become smaller.

[0049] The cross-section of the core rod 4 is specifically a square, a regular pentagon, or a regular hexagon, which can make the cross-sectional size of each microchannel 10 consistent.

[0050] The light source 11 is a lamp tube, which is fixed between the upper partition 2 and the lower partition 3. The lamp tube can be an ultraviolet lamp tube.

[0051] The bottom of the outer cylinder 1 has a drain port 103 that communicates with the liquid inlet chamber 101. A dirt-blocking screen 12 can also be installed in the liquid inlet chamber 101. The dirt-blocking screen 12 is located below the liquid inlet 102 and above the drain port 103. A valve is installed on the drain port 103. Particles can settle into the space below the dirt-blocking screen 12 in the liquid inlet chamber 101. After accumulating a large amount, the valve is opened, so that the particles gathered under the dirt-blocking screen 12 are discharged from the drain port 103. After discharge, the valve is closed to block the drain port 103.

[0052] The working principle of the above-mentioned photocatalytic microchannel organic wastewater treatment device is as follows:

[0053] When the ultraviolet lamp (light source 11) is turned on, the organic wastewater enters the inlet chamber 101 from the inlet 102, and then flows upward into the space between the core rod 4 and the reaction tube 5, that is, flows upward into the microchannel 10 and spirals along the microchannel 10. Under the irradiation of the ultraviolet lamp, a photocatalytic reaction occurs, and the organic pollutants in the organic wastewater are degraded. The degraded organic wastewater enters the suspension chamber 801.

[0054] When the microchannel 10 is not blocked, since the sum of the cross-sectional areas of all the microchannels 10 between a single core rod 4 and its outer reaction tube 5 is greater than the cross-sectional area of ​​the lower outlet 803, the water level in the suspension chamber 801 will gradually rise to the upper outlet 802. The suspension chamber 801 simultaneously discharges organic wastewater into the outlet chamber 901 through the upper outlet 802 and the lower outlet 803. Finally, the organic wastewater that converges in the outlet chamber 901 is discharged outward through the main outlet 902. Therefore, when the microchannel 10 is not blocked, the suspension element 6 is completely submerged in the organic wastewater in the suspension chamber 801. Under the buoyancy of the suspension element 6 itself, the suspension element 6 drives the suspension rod 402 and the core rod 4 on it to rise a certain distance through the spring (elastic element 7) and then maintains the corresponding height. It also helps the core rod 4 to move up and down with the change in the flow rate of organic wastewater entering the microchannel 10, so as to loosen the particles in the microchannel 10 or shear the particles to make them fall down out of the microchannel 10.

[0055] When the microchannel 10 is blocked, the water level in the suspension chamber 801 drops, and the volume of the suspended component 6 submerged in the organic wastewater decreases accordingly. The buoyancy of the suspended component 6 also decreases or even disappears. Without buoyancy as support, both the suspended component 6 and the core rod 4 will descend. When the suspended component 6 descends and hits the upper partition 2, the presence of the elastic element 7 will cause the core rod 4 to vibrate. Combined with the displacement and vibration of the core rod 4, the particles blocking the microchannel 10 will loosen and fall downward, thereby achieving self-cleaning of the blockage in the microchannel 10.

[0056] When the microchannel 10 is severely clogged, the rod 402 can be manually held from the window 804 to move the core rod 4 up and down quickly over a long distance, which can better remove the clogged particles in the microchannel 10.

[0057] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A photocatalytic microchannel organic wastewater treatment device, characterized in that: The application relates to a micro-channel reactor for treating organic wastewater, which comprises the following parts: an outer cylinder (1) with an inner cavity, wherein an upper partition plate (2) and a lower partition plate (3) are fixed in the inner cavity, the upper partition plate (2) is located above the lower partition plate (3), and a liquid inlet cavity (101) is formed between the lower partition plate (3) and the inner wall of the bottom end of the inner cavity, and a liquid inlet (102) is communicated with the liquid inlet cavity (101); a micro-channel structure, which comprises a core rod (4) and a transparent reaction tube (5), the core rod (4) has at least three side walls in the circumferential direction, and the side walls are all helical surfaces (401) extending along the axial direction of the core rod (4); one end of the reaction tube (5) is fixedly connected with the upper partition plate (2), the other end is fixedly connected with the lower partition plate (3), the core rod (4) is movably arranged in the reaction tube (5), and each helical surface (401) and the inner circumferential wall of the reaction tube (5) form a helical micro-channel (10); a blockage self-cleaning structure, which comprises a suspending element (6), an elastic element (7) and an inner cylinder (8), the inner cylinder (8) is fixedly connected with the upper partition plate (2), so that a suspending cavity (801) is formed between the inner wall of the inner cylinder (8) and the upper partition plate (2), the liquid inlet cavity (101) is communicated with the suspending cavity (801) through the micro-channel (10), the upper end of the outer circumferential wall of the inner cylinder (8) has an upper liquid outlet (802) with a cross-sectional area A, the lower end of the outer circumferential wall of the inner cylinder (8) has a lower liquid outlet (803) with a cross-sectional area B, the upper liquid outlet (802) and the lower liquid outlet (803) are both communicated with the suspending cavity (801), the suspending element (6) is arranged in the suspending cavity (801) and located below the upper liquid outlet (802), the buoyancy of the suspending element (6) when the suspending element (6) is completely immersed in the organic wastewater is greater than the gravity of the suspending element (6), the sum of the cross-sectional areas of all the micro-channels (10) between a single core rod (4) and the outer reaction tube (5) is C, B < C < A + B; the top end of the core rod (4) extends upwardly and has a hanger rod (402) inserted into the suspending cavity (801), the upper end of the elastic element (7) is fixedly connected with the hanger rod (402), and the lower end of the elastic element (7) is fixedly connected with the suspending element (6); and a light source (11) arranged in the inner cavity and located between the upper partition plate (2) and the lower partition plate (3).

2. The photocatalytic microchannel organic wastewater treatment device according to claim 1, characterized in that: The upper surface of the inner cylinder (8) is penetrated by a window hole (804) through which the hanger rod (402) passes, the upper end of the hanger rod (402) is fixedly connected with a top plate (403), and the height of the window hole (804) is greater than the height of the upper liquid outlet (802).

3. The photocatalytic microchannel organic wastewater treatment device according to claim 2, characterized in that: The micro-channel structure and the blockage self-cleaning structure both have multiple sets, each core rod (4) corresponds to a reaction tube (5), the hanger rod (402) corresponds to the suspending cavity (801) one by one, the core rod (4) is movably arranged in the corresponding reaction tube (5), and the hanger rod (402) is inserted into the corresponding suspending cavity (801). The outer cylinder (1) is fixed with a drain jacket (9), the drain jacket (9) is located above the upper baffle (2), a liquid outlet cavity (901) is formed among the drain jacket (9), the upper baffle (2) and the outer cylinder (1), the upper liquid outlet (802) and the lower liquid outlet (803) are communicated with the liquid outlet cavity (901), a total liquid outlet (902) communicated with the liquid outlet cavity (901) is arranged on the outer wall of the outer cylinder (1), and the total liquid outlet (902) is located below the lower liquid outlet (803).

4. The photocatalytic microchannel organic wastewater treatment device according to claim 1, characterized in that: The elastic element (7) is a spring, and the suspension element (6) is annular.

5. The photocatalytic microchannel organic wastewater treatment device according to claim 1, characterized in that: The reaction tube (5) is a quartz tube.

6. The photocatalytic microchannel organic wastewater treatment device according to claim 1, characterized in that: The material of the core rod (4) is metal.

7. The photocatalytic microchannel organic wastewater treatment device according to claim 1, characterized in that: The outer peripheral wall of the core rod (4) is attached to the inner wall of the reaction tube (5).

8. The photocatalytic microchannel organic wastewater treatment device according to claim 1, characterized in that: The cross section of the core rod (4) is square, regular pentagon or regular hexagon.

9. The photocatalytic microchannel organic wastewater treatment device according to claim 1, characterized in that: The light source (11) adopts a lamp tube, and the lamp tube is fixed between the upper baffle (2) and the lower baffle (3).

10. The photocatalytic microchannel organic wastewater treatment device according to claim 1, characterized in that: The bottom of the outer cylinder (1) is provided with a sewage outlet (103) communicated with the liquid inlet cavity (101), and a valve is arranged on the sewage outlet (103).

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