Microchannel reactor for ozonolysis of organic compounds

Abstract

The present application relates to sewage treatment technical field, especially a kind of ozone degradation organic matter microchannel reaction device, including hollow cylinder, the middle part of cylinder is equipped with filler, filler is formed by the bundling of multiple iron wires with catalyst, filler divides the inner cavity of cylinder into upper cavity and lower cavity, lower cavity is sequentially equipped with sludge discharge port, water inlet, gas inlet and screen from bottom to top, upper cavity top is equipped with gas outlet and pressure controller, gas outlet is installed with gas valve, the middle part of upper cavity is equipped with water outlet, water outlet is equipped with baffle, pressure controller is electrically connected with water inlet valve, gas valve and sludge valve;The present application utilizes multiple iron wires to bundle and form microchannel for ozone and wastewater reaction, improves mass transfer efficiency, and simple to prepare, easy to clean, and when screen is blocked, unused gas is gathered in upper cavity, when gas pressure reaches a certain value, trigger pressure controller to backflush screen, the whole backflushing process can be automatically controlled, so that the degree of automation of the whole device is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, and particularly relates to an ozone degradation organic matter micro-channel reaction device. BACKGROUND

[0002] Ozone oxidation degradation of organic pollutants in wastewater is a typical gas-liquid two-phase reaction, and the mass transfer effect is crucial to the pollutant removal efficiency. The ozone mass transfer efficiency of the conventional gas-liquid contact equipment such as the bubble column gas-liquid contact reactor and the jet aerator is relatively low or the energy consumption is high, which reduces the utilization rate of ozone and greatly limits the large-scale popularization and application of ozone oxidation technology in wastewater treatment. Therefore, the application of high-efficiency gas-liquid mass transfer equipment will become the core of improving the ozone utilization rate and the treatment efficiency.

[0003] The micro-channel reactor is a new type of chemical process intensification equipment. The mass transfer and heat transfer processes required for chemical reactions in the micro-reactor are greatly intensified, and the transfer speed is greatly improved, so that the chemical reaction rate in the micro-channel is greatly improved. The speed control step of ozone catalytic oxidation reaction is the mass transfer process, and how to improve the mass transfer of ozone is the key problem to be solved in engineering application.

[0004] The free radicals generated by ozone catalytic oxidation can effectively degrade dissolved organic matter in water, but in the process of ozone participation, ozone cannot exert its effect just by dissolving, and premature dissolution will make the unstable free radicals generated by the reaction of ozone and water automatically decompose or mutually compound and be wasted. For example, CN 110668555A discloses a new ozone oxidation device, which forcibly makes the wastewater in a turbulent state by changing the water flow direction multiple times, so that the dissolved ozone in the wastewater fully contacts with the organic matter, but the dissolved ozone will soon self-consume, the undissolved ozone cannot be utilized, and finally escapes from the water outlet, greatly reducing the treatment efficiency. SUMMARY

[0005] The technical problem to be solved by the present application is that in the prior art, the mass transfer efficiency is relatively low or the energy consumption is high when ozone is used to oxidize and degrade wastewater, which reduces the utilization rate of ozone. To solve the above problem, the present application provides an ozone degradation organic matter micro-channel reaction device.

[0006] To solve the above technical problems, the present application adopts the following technical scheme: an ozone degradation organic matter micro-channel reaction device, comprising a hollow cylinder, a filler is arranged at the middle part of the cylinder, the filler is formed by bundling a plurality of iron wires with catalysts, micro-channels for water flow are formed between adjacent iron wires, the shape and size of the micro-channels can be adjusted by changing the shape of the surface of the iron wire and the thickness of the iron wire, for example, the iron wires with concave or convex surfaces are mixed and bundled, or the iron wires with circular cross sections are mixed with the iron wires with other shapes, different types of channels can be formed, the micro-channels formed by bundling the iron wires are simple to prepare, and when clogging occurs, the clogging can be cleaned by simply unbundling, which is convenient to clean. The ozone subjected to catalytic oxidation reacts with the wastewater in the micro-channels formed by the plurality of iron wires, and the micro-channels have high gas-liquid mass transfer performance that cannot be compared with conventional reactors. The filler divides the inner cavity of the cylinder into an upper cavity and a lower cavity which are connected to each other;

[0007] The lower cavity is sequentially provided with a sludge discharge port, a water inlet, an air inlet and a screen from bottom to top, the water inlet is provided with a water inlet valve, the sludge discharge port is provided with a sludge discharge valve, the air inlet is connected with a plurality of aeration heads, and the filtration of the screen can prevent the micro-channels from being clogged.

[0008] The upper cavity is provided with an air outlet and a pressure controller for detecting the pressure of the gas at the top of the upper cavity, the air outlet is provided with an air outlet valve, the middle part of the upper cavity is provided with a water outlet, the water outlet is provided with a baffle for blocking the gas to make the gas gather to the top of the upper cavity, the baffle is obliquely arranged and the height of the baffle is greater than the height of the water outlet, an opening for water flow is formed between the oblique baffle and the inner wall of the cylinder, the opening connects the upper cavity and the water outlet, and the pressure controller is electrically connected with the water inlet valve, the air outlet valve and the sludge discharge valve.

[0009] The wastewater enters the cylinder from the water inlet, the ozone enters from the air inlet and is blown into the wastewater by the aeration heads to fully contact with the wastewater, and then the ozone and the wastewater flow upward into the filler after being filtered by the screen, the catalyst on the filler catalytically oxidizes the ozone to generate free radicals, the free radicals degrade the organic matter in the wastewater, and the degraded water flows out through the water outlet; when the screen is clogged, the amount of the wastewater entering the filler for degradation is reduced, the blown ozone cannot be fully utilized, the unused gas is blocked by the baffle and gathered to the top of the upper cavity, when the pressure reaches a certain value, the pressure controller is triggered, at this time, the water inlet valve is closed, the sludge discharge valve and the air outlet valve are started, the water remaining in the cylinder moves downward under the action of gravity, and the particles intercepted below the screen are automatically flushed, the flushed water can be collected again, the particles are separated after concentration treatment, and the water can re-enter the treatment system for oxidative degradation; when the pressure decreases, at this time, the water inlet valve is opened, and the sludge discharge valve and the air outlet valve are closed, and the wastewater continues to enter the cylinder for degradation.

[0010] The technical scheme utilizes multiple iron wires to bundle to form micro-channels for ozone and wastewater reaction, improves mass transfer efficiency, and is simple to prepare and convenient to clean; when the screen is blocked, unused gas is gathered in the upper cavity; when the gas pressure reaches a certain value, a pressure controller is triggered to backwash the screen; the whole backwashing process is automatically controlled, so that the whole device has a high degree of automation.

[0011] Further, the screen includes multiple parallel arranged filaments, both ends of the filaments are fixed on two roller shafts, and at least one roller shaft is provided with a driving mechanism capable of driving the rotation of the roller shaft to realize the tensioning or loosening of the filaments; when the rotation of the roller shaft makes the filaments on the two roller shafts in a tensioning state, the screen formed by the multiple tensioning filaments is in a working state to filter the particulate matters in the wastewater, avoiding the blockage of the micro-channels; when the rotation of the roller shaft makes the filaments change from the tensioning state to the loosening state, the filaments vibrate to shake off the particulate matters adhered thereto, and in combination with the backwashing, the screen can achieve better cleaning effect. The outer peripheral wall of the roller shaft is provided with a plurality of grooves for accommodating the filaments, the grooves can position the filaments to avoid the displacement of the filaments during the tensioning and loosening process, thereby affecting the filtering effect.

[0012] Further, the driving mechanism includes a first gear sleeved on the end of the roller shaft, a first rack engaged with the first gear, and a linear reciprocating motion mechanism connected with the end of the first rack; the linear reciprocating motion mechanism drives the first rack to move linearly, the first rack drives the first gear to rotate, thereby driving the roller shaft to rotate.

[0013] Further, the inner wall of the cylinder is provided with a baffle, the baffle and the inner wall of the cylinder form a containing cavity containing the roller shaft, and the baffle forms an intermediate flow channel for the wastewater; the cross section of the cylinder can be square or circular; when the cross section of the cylinder is circular, after the rectangular screen formed by the two roller shafts and the multiple filaments is installed inside the cylinder, a large gap is left between the screen and the inner wall of the cylinder, and the wastewater directly enters the filler without being filtered through this part, which causes the filler to be blocked; when the cross section of the cylinder is square, at least one roller shaft is rotatable, a gap is left between the roller shaft and the inner wall of the cylinder, and based on the installation requirement, the two filaments on the outside also leave a gap with the inner wall of the cylinder, which also causes the wastewater entering the filler from the gap without being filtered. After the baffle is arranged, all the wastewater passes through the intermediate flow channel formed by the baffle to the screen for filtration, so that the filler is not easy to be blocked.

[0014] The baffle includes an angular baffle and an upper baffle installed on the inner wall of the cylinder, a gap is left between the two for the filaments to pass through, and a sealing ring is arranged between the angular baffle, the upper baffle and the filaments, which can achieve good sealing effect on one hand to avoid the wastewater entering the containing cavity from the intermediate flow channel, and on the other hand to avoid the damage to the filaments caused by the pressure of the rigid angular baffle and the upper baffle.

[0015] Further, the end of the roller shaft on which the driving mechanism is installed is coaxially sleeved with a second gear, the second gear is engaged with a second rack, and the top end of the second rack is fixed with the upper baffle corresponding to the roller shaft; when one of the roller shafts is rotatable, the upper baffle corresponding to the roller shaft is in a split structure with the upper baffles of the remaining parts, and after the linear reciprocating mechanism drives the roller shaft to rotate, the second gear on the roller shaft rotates, the second gear drives the second rack to move up and down, thereby driving the corresponding upper baffle to move up and down, so that when the filaments are loose, the upper baffle rises synchronously without pressing the filaments to cause obstruction; when both of the roller shafts are rotatable, the upper baffle is in an integral structure, and the second gears on the two roller shafts rotate synchronously to drive the second rack to move up and down synchronously, thereby realizing the up and down movement of the integral upper baffle.

[0016] Further, the preparation method of the filler is as follows: after the iron wires are pickled and rinsed clean, the iron wires are immersed in a proper amount of metal mixed solution containing 10-40 g / L of manganese chloride and 2-10 g / L of bismuth chloride; under the protection of nitrogen or argon, direct current deposition is carried out at a constant electrolysis temperature of 20-80 DEG C and a current density of 10-600 A / m 2 After 20-40 min, the iron wires are taken out, then placed in a furnace at 300-600 DEG C for calcination for 30-60 min, and an oxidation layer is formed on the surface to be a catalyst layer.

[0017] Further, the baffle is located at one end of the water outlet close to the cylinder, and the other end of the water outlet away from the cylinder is bent to block the gas, so that the gas is gathered in the upper cavity to trigger the pressure controller and improve the sensitivity.

[0018] Further, the gas outlet is connected with a gas outlet pipe, and the gas outlet pipe is filled with activated carbon.

[0019] Further, a perforated plate is arranged between the water inlet and the sludge discharge port, a plurality of tapered holes with large upper diameter and small lower diameter are formed in the perforated plate, and the particulate matters intercepted by the screen are introduced into the sludge discharge port through the tapered holes.

[0020] Further, the cross-sectional area of the upper half of the upper cavity gradually decreases from bottom to top in a tapered structure, which is conducive to the gathering of the gas to the top of the upper cavity.

[0021] The beneficial effects of the present application are: the present application uses a plurality of iron wires to form a microchannel for ozone and wastewater reaction, improves the mass transfer efficiency, and is simple to prepare and convenient to clean; when the screen is blocked, the unused gas is gathered in the upper cavity, and when the gas pressure reaches a certain value, the pressure controller is triggered to backwash the screen, and the whole backwashing process can be automatically controlled, so that the whole device has a high degree of automation. 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 structure of the present invention;

[0024] Figure 2 This is a top view of the sieve.

[0025] Figure 3 This is the front view of the sieve;

[0026] Figure 4 This is a cross-sectional view of the packing material;

[0027] In the picture:

[0028] 1. Cylinder; 101. Upper cavity; 102. Lower cavity; 1021. Receptacle; 1022. Intermediate flow channel; 2. Packing material; 201. Iron wire; 202. Microchannel; 3. Sludge discharge port; 4. Water inlet; 5. Air inlet; 6. Screen; 601. Fine wire; 7. Water inlet valve; 8. Sludge discharge valve; 9. Aeration head; 10. Air outlet; 11. Pressure controller; 12. Air outlet valve; 13. Water outlet; 14. Baffle; 15. Roller; 16. Air outlet pipe; 17. Activated carbon; 18. Perforated plate; 1801. Conical hole; 19. Filter plate; 20. Linear reciprocating motion mechanism; 21. First gear; 22. First rack; 23. Angular baffle; 24. Upper baffle; 25. Second gear; 26. Second rack. Detailed Implementation

[0029] 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 directions and references, such as 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 restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0030] Example 1:

[0031] like Figures 1-4As shown, the present application is a kind of ozone degradation organic matter microchannel reaction device, including hollow cylinder 1, the middle part of the cylinder 1 is equipped with filler 2, the filler 2 is formed by a plurality of iron wires 201 with catalyst, the adjacent iron wire 201 is formed with the microchannel 202 for water flow, by changing the shape of iron wire 201 surface and the thickness of iron wire 201, the shape and size of microchannel 202 can be adjusted, such as mixed bundle of iron wire 201 with concave or convex surface, or mixed bundle of iron wire 201 with circular cross section and iron wire 201 with other shape cross section, different types of channels can be formed, the microchannel 202 formed by iron wire 201 is simple in preparation process, and when clogging occurs, it can be cleaned by simply disassembling the bundle, convenient to clean, ozone and wastewater catalytically oxidized in the microchannel 202 formed by a plurality of iron wires 201, which has incomparable high efficiency gas-liquid mass transfer performance compared with conventional reactors.

[0032] The preparation method of the filler is: after the iron wire 201 is pickled and washed clean, it is immersed in a proper amount of metal mixed solution, the metal mixed solution contains components: 10-40 g / L of manganese chloride and 2-10 g / L of bismuth chloride, under the protection of nitrogen or argon, the constant electrolysis temperature is 20-80 DEG C, under the condition of current density of 10-600 A / m 2 2, after 20-40 min of direct current deposition, take out, then put in the furnace at 300-600 DEG C and calcine for 30-60 min, form an oxide layer on the surface, and finally bundle a plurality of iron wires 201 into shape.

[0033] The filler 2 divides the inner cavity of the cylinder 1 into upper cavity 101 and lower cavity 102 which are connected to each other. The lower cavity 102 is sequentially provided with a sludge discharge port 3, a perforated plate 18, a water inlet 4, a filter plate 19, an air inlet 5 and a screen 6 from bottom to top. The water inlet 4 is used for introducing wastewater and is provided with a water inlet valve 7. The sludge discharge port 3 is provided with a sludge discharge valve 8. The air inlet 5 is used for introducing ozone and is connected with a plurality of aeration heads 9. The filter plate 19 and the screen 6 can avoid clogging of the microchannel. A plurality of tapered holes 1801 with large upper part and small lower part are formed in the perforated plate 18. The particles intercepted by the screen 6 and the filter plate 19 enter the sludge discharge port 3 through the tapered holes 1801.

[0034] The cross-sectional area of the upper half of the upper cavity 101 is gradually reduced from bottom to top in a conical structure, which is conducive to the gas gathering at the top of the upper cavity 101, and the top is provided with a gas outlet 10 and a pressure controller 11 for detecting the gas pressure, the gas outlet 10 is internally provided with a filter screen and is mounted with a gas outlet valve 12, and the gas outlet 10 is connected with a gas outlet pipe 16, and the gas outlet pipe 16 is internally filled with activated carbon 17; the middle part of the upper cavity 101 is provided with a water outlet 13, and the water outlet 13 is provided with a baffle 14 for blocking the gas to gather at the top of the upper cavity 101, the baffle 14 is inclinedly arranged and the height of the baffle 14 is greater than the height of the water outlet 13, and the inclined baffle 14 and the inner wall of the cylinder 1 form a gap for water flow, which communicates the upper cavity 101 and the water outlet 13; the baffle 14 is located at one end of the water outlet 13 close to the cylinder 1, and the other end of the water outlet 13 away from the cylinder 1 is bent upward to block the gas, so that the gas is gathered in the upper cavity 101 as much as possible to trigger the pressure controller 11 and improve the sensitivity. The pressure controller 11 is electrically connected with the water inlet valve 7, the gas outlet valve 12 and the sludge discharge valve 8.

[0035] The screen 6 includes a plurality of parallel arranged filaments 601, both ends of the filaments 601 are fixed on two roller shafts 15 respectively, and at least one roller shaft 15 is provided with a driving mechanism capable of driving the rotation thereof, so as to realize the tensioning or loosening of the filaments 601, a plurality of grooves for accommodating the filaments 601 are formed on the outer peripheral wall of the roller shaft 15, the grooves can position the filaments 601, avoiding the displacement of the filaments 601 during the tensioning and loosening process to affect the filtering effect; when the roller shaft 15 is rotated to make the filaments 601 on the two roller shafts 15 in a tensioning state, the screen 6 formed by the plurality of tensioned filaments 601 is in a working state to filter the particulate matters in the wastewater, avoiding the blockage of the micro-channels 202; when the roller shaft 15 is rotated to make the filaments 601 change from the tensioning state to the loosening state, the filaments 601 vibrate, which can shake off the particulate matters adhered thereto, and in combination with the backwashing, the screen 6 can achieve better cleaning effect.

[0036] The inner wall of the barrel 1 is provided with a surrounding barrier, which forms a containing cavity 1021 containing the roller shaft 15 together with the inner wall of the barrel 1, and an intermediate flow channel 1022 formed by the surrounding barrier for the wastewater to pass through; the cross section of the barrel 1 can be square or circular. When the cross section of the barrel 1 is circular, after the rectangular screen 6 composed of two roller shafts 15 and a plurality of filaments 601 is installed inside the barrel 1, a large gap is left between the screen 6 and the inner wall of the barrel 1, and the wastewater directly entering the filler 2 from this part without filtration will easily cause the filler 2 to be blocked; when the cross section of the barrel 1 is square, since at least one roller shaft 15 can rotate, a gap is left between it and the inner wall of the barrel 1, and based on the installation requirements, two filaments located on the outside will also leave a gap with the inner wall of the barrel 1, which also causes the wastewater entering the filler 2 from the gap to not be filtered. After the surrounding barrier is provided, all wastewater passes through the intermediate flow channel 1022 formed by the surrounding barrier to the screen 6 for filtration, which can prevent the filler 2 from being easily blocked.

[0037] The surrounding barrier includes an angular baffle 23 and an upper baffle 24 installed on the inner wall of the barrel 1, the angular baffle 23 includes a horizontal section and a vertical section, and the cross section thereof is in an angular structure, a gap is left between the angular baffle 23 and the upper baffle 24 for the filaments 601 to pass through, and a sealing ring is arranged between the angular baffle 23 and the upper baffle 24 and the filaments 601, which can not only achieve good sealing effect to prevent the wastewater from entering the containing cavity 1021 from the intermediate flow channel 1022, but also avoid damaging the filaments 601 when the rigid angular baffle 23 and the upper baffle 24 press the filaments 601.

[0038] The driving mechanism comprises a first gear 21 sleeved on the end of the roller shaft 15, a first rack 22 engaged with the first gear 21, and a linear reciprocating mechanism 20 connected with the end of the first rack 22, which can be but is not limited to an electric push rod; the end of the roller shaft 15, on which the driving mechanism is installed, is coaxially sleeved with a second gear 25, which is engaged with a second rack 26, the top end of which is fixed with the upper baffle 24 corresponding to the roller shaft 15; when one of the roller shafts 15 is rotatable, the upper baffle 24 corresponding to the roller shaft 15 is in a split structure with the upper baffles 24 of the rest parts, the upper baffle 24 corresponding to the roller shaft 15 can move up and down, and the upper baffles 24 of the rest parts are fixedly connected with the inner wall of the cylinder 1; the linear reciprocating mechanism 20 drives the first rack 22 to move linearly, the first rack 22 drives the first gear 21 to rotate, thereby driving the roller shaft 15 to rotate, the second gear 25 on the roller shaft 15 rotates accordingly, the second gear 25 drives the second rack 26 to move up and down, thereby driving the corresponding upper baffle 24 to move up and down, so as to realize that when the filament 601 is loose, the upper baffle 24 rises synchronously without pressing the filament 601 to hinder it, and when the filament 601 is tight, the upper baffle 24 descends synchronously to press it; when both of the roller shafts 15 are rotatable, the upper baffles 24 are in an integral structure, the second gears 25 on the two roller shafts 15 rotate synchronously to drive the second rack 26 to move up and down synchronously, thereby realizing the up and down movement of the integral upper baffles 24.

[0039] Working principle:

[0040] Wastewater enters the cylinder 1 from the water inlet 4, ozone enters from the gas inlet 5 and is blown into the wastewater by the aerator 9 to fully contact with the wastewater, both of which flow upward into the filler 2 after being filtered by the screen 6 and the filter plate 19, the catalyst on the filler 2 catalyzes the ozone to produce free radicals, the free radicals degrade the organic matter in the wastewater, and the degraded water flows out through the water outlet 13; when the screen 6 is blocked, the amount of wastewater entering the filler 2 for degradation is reduced, and the blown-in ozone cannot be fully utilized, the unused gas is blocked by the baffle 14 and gathered at the top of the upper chamber 101, when the pressure reaches a certain value, the pressure controller 11 is triggered, at this time the water inlet valve 7 is closed, the sludge discharge valve 8 and the gas outlet valve 12 are started, and the water in the cylinder 1 moves downward under the action of gravity, automatically flushing the intercepted particulate matter below the screen 6 and the filter plate 19, the flushed water can be collected again, separated from the particulate matter after concentration treatment, and the water can re-enter the treatment system for oxidative degradation; when the pressure decreases, at this time the water inlet valve 7 is opened, the sludge discharge valve 8 and the gas outlet valve 12 are closed, and the wastewater continues to enter the cylinder 1 for degradation.

[0041] The above-mentioned ideal embodiments according to the present application are for illustration, through the above-mentioned description, relevant personnel can certainly make various changes and modifications without departing from the scope of the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A microchannel reaction device for ozone degradation of organic matter, characterized in that: The device includes a hollow cylinder (1), and a filler (2) is provided in the middle part of the cylinder (1). The filler (2) is formed by binding multiple iron wires (201) with catalyst attached. A microchannel (202) for water to flow through is formed between adjacent iron wires (201). The filler (2) divides the inner cavity of the cylinder (1) into an upper cavity (101) and a lower cavity (102) that are interconnected. The lower chamber (102) is provided with a sludge discharge port (3), a water inlet (4), an air inlet (5) and a screen (6) from bottom to top. A water inlet valve (7) is installed on the water inlet (4), a sludge discharge valve (8) is installed on the sludge discharge port (3), and multiple aeration heads (9) are connected to the air inlet (5). The upper cavity (101) is provided with an air outlet (10) and a pressure controller (11) for detecting gas pressure at the top. An air outlet valve (12) is installed on the air outlet (10). A water outlet (13) is provided in the middle part of the upper cavity (101). A baffle (14) is provided on the water outlet (13) to block the gas so that it gathers at the top of the upper cavity (101). The pressure controller (11) is electrically connected to the water inlet valve (7), the air outlet valve (12) and the mud discharge valve (8). The screen (6) includes multiple parallel filaments (601). The filaments (601) can be tightened or loosened to shake off the impurities attached to them during the state transition process. When the screen (6) is blocked, the ozone introduced from the air inlet (5) is not fully utilized and is blocked by the baffle (14), thus accumulating in the upper chamber (101). When the gas pressure in the upper chamber (101) increases to a certain value, the pressure controller (11) is triggered. At this time, the water inlet valve (7) is closed, the mud discharge valve (8) and the air outlet valve (12) are opened, and the water moves downward under the action of gravity to wash the screen (6).

2. The microchannel reaction device for ozone degradation of organic matter according to claim 1, characterized in that: The two ends of the filament (601) are respectively fixed on two rollers (15), and at least one roller (15) is equipped with a drive mechanism that can drive it to rotate, so as to tighten or loosen the filament (601).

3. The microchannel reaction device for ozone degradation of organic matter according to claim 2, characterized in that: The drive mechanism includes a first gear (21) sleeved on the end of the roller (15), a first rack (22) meshing with the first gear (21), and a linear reciprocating motion mechanism (20) connected to the end of the first rack (22).

4. The microchannel reaction device for ozone degradation of organic matter according to claim 2, characterized in that: The inner wall of the cylinder (1) is equipped with a baffle, which together with the inner wall of the cylinder (1) forms a cavity for accommodating the roller shaft (15). The baffle includes an angled baffle (23) and an upper baffle (24) installed on the inner wall of the cylinder (1), with a gap between them for the fine filament (601) to pass through.

5. The microchannel reaction device for ozone degradation of organic matter according to claim 4, characterized in that: The end of the roller shaft (15) on which the drive mechanism is installed is coaxially fitted with a second gear (25), and the second gear (25) is meshed with a second rack (26). The top end of the second rack (26) is fixed to the upper baffle (24) corresponding to the roller shaft (15).

6. The microchannel reaction device for ozone degradation of organic matter according to claim 1, characterized in that: The preparation method of the filler (2) is as follows: after acid washing and rinsing the iron wire (201) clean, it is immersed in an appropriate amount of metal mixed solution. The metal mixed solution contains the following components: 10~40g / L manganese chloride and 2~10g / L bismuth chloride. Under nitrogen or argon protection, the electrolysis temperature is constant at 20℃~80℃, and the current density is 10~600A / m 2 Under the conditions of DC electrodeposition for 20-40 min, the iron wire is removed and then placed in a furnace at 300-600℃ for calcination for 30-60 min to form an oxide layer on the surface. Finally, multiple iron wires (201) are bundled together to form a shape.

7. The microchannel reaction device for ozone degradation of organic matter according to claim 1, characterized in that: The baffle (14) is located at the end of the outlet (13) near the cylinder (1), and the end of the outlet (13) away from the cylinder (1) has a bend to block the gas.

8. The microchannel reaction device for ozone degradation of organic matter according to claim 1, characterized in that: The air outlet (10) is connected to an air outlet pipe (16), and the air outlet pipe (16) is filled with activated carbon (17).

9. The microchannel reaction device for ozone degradation of organic matter according to claim 1, characterized in that: A perforated plate (18) is provided between the water inlet (4) and the sludge outlet (3), and the perforated plate (18) has multiple conical holes (1801) that are larger at the top and smaller at the bottom.

10. The microchannel reaction device for ozone degradation of organic matter according to claim 1, characterized in that: The cross-sectional area of ​​the upper half of the upper cavity (101) gradually decreases from bottom to top.

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