Method and structure for efficiently treating sewage using ozone

Abstract

The present invention belongs to the technical field of sewage treatment, and specifically relates to a method and structure for efficiently utilizing ozone to treat sewage, which can enable aeration bubbles containing ozone to be pre-mixed with sewage in a mixing chamber of an ozone reaction tank and then be sucked into a pressurization chamber of the ozone reaction tank. During the process of the internal pressure of the liquid in the pressurization chamber of the sewage mixed with bubbles continuously increasing, part of the bubbles will be compressed and ruptured, so that the specific surface area of ​​the bubbles becomes larger, the oxidation decomposition ability is enhanced, and the mass transfer efficiency of the mixed reaction with the sewage is significantly improved, the residence contact time of the generated microbubbles, ozone, etc. with the sewage is increased, and the charge density of the double electric layer on the surface of the microbubbles is increased. When ruptured, the positive and negative charges can be discharged with extremely high concentrations to destroy water molecules to generate hydroxyl free radicals, thereby improving the degradation efficiency of ozone on sewage, helping to improve the utilization rate of ozone and reduce the treatment cost.

Description

Technical Field

[0001] The present invention relates to the technical field of treating sewage by using ozone, and in particular to a sewage treatment method and structure capable of efficiently using ozone to purify sewage. Background Art

[0002] Industrial wastewater is of various types and complex in composition. The composition and composition ratio of discharged wastewater vary greatly in different process cycles. It is not suitable for simple biological purification treatment. Most of them need to be treated with chemical methods. Chemical oxidation is generally used to treat organic pollutants in the industry. Ozone oxidation is a common and effective chemical oxidation degradation method.

[0003] In sewage treatment plants, ozone is widely used due to its strong oxidizing properties, fast self-decomposition speed, and the fact that the reaction product is oxygen. Most of the existing treatment processes in sewage treatment plants use ozone in aeration tanks / aeration chambers to pre-oxidize and disinfect sewage. In order to balance the contact area between ozone and sewage and the oxidation treatment efficiency, the aeration tank is usually made to have a wider plane area as much as possible, and the depth of the sewage will be relatively shallow. In this way, the contact time between ozone and sewage (solution) will be relatively short during the aeration oxidation process, and the dissolution rate of ozone will also be relatively low, which restricts the utilization rate of ozone, there is a certain degree of ozone waste, and the treatment cost is relatively high. Summary of the invention

[0004] In view of the problem of low ozone utilization rate in the current process of using ozone to treat sewage, the present invention provides a method and structure that can efficiently utilize ozone to treat sewage. The detailed structural technical scheme and method technical scheme are described as follows.

[0005] A structure for efficiently utilizing ozone to treat sewage comprises an ozone generator and an ozone reaction tank. The ozone generator is connected to the outer end of an air inlet pipe arranged at the lower part of the ozone reaction tank through a pipeline, and at least a gas flow valve and a booster pump are provided on the connecting pipeline between the ozone generator and the air inlet pipe. A water distribution ring is provided at the lower part of the ozone reaction tank, and the water inlet end of the water distribution ring is connected to a sewage pool through a pipeline, and at least a booster pump is provided on the connecting pipeline between the water distribution ring and the sewage pool. The water outlet end of the water distribution ring is connected to a plurality of water inlet pipes arranged around the circumference at the lower part of the ozone reaction tank. The jet directions of the multiple jets sent into the ozone reaction tank by the water inlet pipe are all inclined downward and are directed toward the axial direction of the inner cavity of the ozone reaction tank.

[0006] The ozone reaction tank is provided with a stirring assembly which includes a stirring paddle. The stirring assembly can drive the stirring paddle to rotate around a vertical axis.

[0007] The inner cavity of the ozone reaction tank is divided into a mixing chamber, a boosting chamber and a top chamber from bottom to top. An aeration plate connected to the inner end of the air inlet pipe is provided on the inner bottom of the mixing chamber. The stirring paddle is provided in the boosting chamber, and when the stirring paddle rotates, the sewage and ozone gathered in the mixing chamber can be sucked upward into the boosting chamber. A floating cover is provided at the position where the boosting chamber and the top chamber are connected, and the floating cover can move up and down in the inner cavity of the ozone reaction tank relative to the tank body of the ozone reaction tank.

[0008] An annular flange and a conical cavity wall are formed on the inner wall of the tank body at a height position corresponding to the floating cover, and the annular flange is located below the conical cavity wall. The conical cavity wall has a narrowed end close to the annular flange, and the inner diameter of the conical end port is not greater than the inner diameter of the annular flange. At the same time, the inner diameter of the lower part of the conical cavity wall is greater than the inner diameter of the annular flange. The side wall of the floating cover can contact the inner wall of the annular flange, so that the opposing surfaces of the two are in a face-to-face matching relationship.

[0009] As the floating cover moves up and down / floats relative to the tank body, the floating cover can switchably correspond in the inner cavity of the annular flange and in the inner cavity of the conical cavity wall, and switchably form a closed matching structure and an open matching structure between the side wall of the floating cover and the inner wall of the tank body.

[0010] Because a sufficient pressure difference needs to be formed between the upper and lower surfaces of the floating cover in order to make the floating cover float up and down, the provision of the floating cover can increase the internal pressure of the solution in the pressurizing chamber.

[0011] A drainage pipe is provided at the upper part of the ozone reaction tank and communicated with the upper part of the top cavity, so as to discharge the oxidized sewage solution out of the ozone reaction tank, and can be discharged directly or indirectly into the sedimentation tank.

[0012] Optionally, a gas-liquid mixing pump is also included. The liquid inlet end of the gas-liquid mixing pump is connected to the sewage tank and the connection position is on the upstream side of the booster pump 2. The gas inlet end of the gas-liquid mixing pump is connected to the ozone generator and the connection position is on the downstream side of the gas flow valve. The gas-liquid output end of the gas-liquid mixing pump is connected to the input end of the booster pump 1 through a pipeline.

[0013] A flow regulating valve is provided on the connecting pipeline between the gas-liquid mixing pump and the sewage pool, by means of which the amount of sewage fed into the gas-liquid mixing pump can be controlled, thereby controlling the gas-liquid mixing ratio of the sewage and the ozone-containing gas.

[0014] Optionally, a radial edge arm is formed on the inner wall of the tank body at the position where the mixing chamber and the boosting chamber are connected, and a barrel portion extending upward is fixedly provided on the radial edge arm. The lower end of the barrel body of the barrel portion is in an open form, the upper end is in a closed form, and a cylindrical flange extending upward into the top cavity is formed on the top wall of the barrel body. The axial hole formed in the middle of the floating cover matches the cylindrical flange, and the cylindrical flange can guide the up and down movement of the floating cover.

[0015] The barrel body of the barrel part is arranged in the boosting chamber and a radial distance is formed between the side wall of the barrel body and the inner wall of the boosting chamber. A plurality of strip slots are arranged on the barrel body of the barrel part at intervals around the circumference and extend in the vertical direction.

[0016] A cylinder with openings at both the upper and lower ends is fixedly arranged in the barrel cavity of the barrel portion, and a radial distance is formed between the side wall of the cylinder and the inner wall of the barrel cavity of the barrel portion.

[0017] The lower port of the barrel extends into the upper part of the mixing chamber, and the upper port extends into the barrel cavity of the barrel portion and forms a vertical spacing relative to the inner end surface of the top wall of the barrel. Preferably, a flared portion is formed at the upper end of the barrel and the large end of the flared portion faces upward. The inner diameter of the small end of the flared portion is consistent with the inner diameter of the barrel.

[0018] The stirring paddle is correspondingly arranged in the middle or upper part of the cylinder, and the specific need is determined according to the vertical distance between the upper end of the cylinder and the top wall of the barrel. If the vertical distance is relatively large, the stirring paddle is correspondingly arranged in the upper part of the cylinder, otherwise it is correspondingly arranged near the middle part of the cylinder.

[0019] When the agitating paddle rotates, it can suck a large amount of sewage mixed with ozone microbubbles from the lower port of the cylinder into the cylinder and be discharged from the upper port of the cylinder into the barrel body of the barrel part, and then be discharged from the barrel part through the strip groove holes on the barrel body and flow into the radial gap space formed between the boosting chamber and the barrel part. Part of the liquid flow may even flow back from the lower part of the strip groove holes into the barrel cavity of the barrel part and flow back to the upper part of the mixing chamber.

[0020] By setting up the mutually nested cylinder and barrel, on the one hand, the flow time of the sewage solution in the boosting chamber can be significantly prolonged, and the mixing and reaction degree between the sewage and the ozone microbubbles can be improved; on the other hand, the internal pressure of the liquid formed in the boosting chamber can be increased, so that more ozone bubbles can be compressed and ruptured, forming smaller microbubbles, and improving the reaction utilization rate of ozone. In addition, the mixing effect of sewage and gas can be improved inside the boosting chamber and between the boosting chamber and the mixing chamber, forming a local mixed flow, so that the sewage is sheared and the convection impact is stronger and more intense, which helps to improve the sewage purification reaction effect.

[0021] Optionally, the slot width of the strip slots gradually increases from top to bottom or increases in steps. Such a design can increase the internal pressure of the liquid in the barrel and increase the degree of bubble splitting under pressure; on the other hand, it can increase the reflux of sewage between the booster chamber and the barrel chamber and mixing chamber of the barrel, increase the turbulence of the liquid at the periphery of the lower port of the cylinder, and enhance the shearing effect and impact degree of the liquid.

[0022] Optionally, an impact part is fixedly provided at the lower part of the cylinder and the impact part is relatively directly below the stirring paddle. The impact part includes a connecting frame fixedly connected to the cylinder and a plurality of silk threads arranged on the connecting frame. The plurality of silk threads are arranged in multiple layers in an alternating manner up and down, and the silk threads in two adjacent layers are in an interlaced state of overlapping and crossing. By interlacing the silk threads, the silk threads are arranged in an interlaced net shape in an overlapping manner up and down, and the bubbles can be cut during the rising process of the bubbles, so that the bubbles are split into multiple ones. Preferably, the two ends of the plurality of silk threads are fixed on a pair of oscillation springs at the same time, and the other ends of the two oscillation springs are respectively connected to spherical hinge blocks, so that the spherical hinge blocks are hinged to the groove portion on the connecting frame. Under this scheme, when impacted by the liquid flow, the silk threads can generate oscillations, which helps to improve the cutting effect of the silk threads on the bubbles.

[0023] Optionally, a pressing assembly is also included, which includes a plurality of guide rods formed on the top wall of the barrel body of the barrel part and distributed alternately around the circumference, springs sleeved on the guide rods, and limiting blocks arranged on the guide rods and capable of adjusting the pre-compression state of the springs.

[0024] The floating cover is provided with a plurality of through holes corresponding to the guide rods. The upper end of the guide rod extends upwards for a certain length after passing through the through holes. The lower end of the spring contacts the upper end surface of the floating cover, and the upper end matches the limiting block.

[0025] By adjusting the pre-compression degree of the spring, the initial elastic force of the spring can be controlled, and downward pressure can be applied to the floating cover. At this time, if the floating cover is moved upward from the annular flange to the conical cavity wall, a pressure difference sufficient to overcome the weight of the floating cover and the spring pressure needs to be formed between the upper and lower surfaces of the floating cover, so that the internal pressure of the liquid formed in the boosting cavity can be increased.

[0026] The inner diameter of the through hole can be consistent with the outer diameter of the guide rod, or it can be an implementation situation in which the inner diameter of the through hole is larger than the outer diameter of the guide rod and the pre-compression degree of each spring can be basically consistent at this time, or it can be a state in which the pre-compression degree of the left and right opposite sides and / or the front and rear opposite sides is different.

[0027] Optionally, in order to facilitate flexible adjustment of the pre-compression degree of the spring, adjustment at any time, and adjustment in the running state, a transmission connecting rod can be matched on the limiting block, and the transmission connecting rod can be matched with a sleeve fixedly installed on the top wall of the tank body.

[0028] A cavity is formed at the lower part of the transmission connecting rod, and the upper end of the guide rod passes through the axial hole on the limiting block and then extends into the cavity. The vertical extension length of the cavity should be sufficient to meet the vertical movement travel requirement of the transmission connecting rod relative to the guide rod. A sealing ring is provided between the inner wall of the lower end of the sleeve and the outer wall of the transmission connecting rod, and the upper end of the transmission connecting rod passes through to the top plate of the sleeve and matches the handle. An external thread section is formed on the upper part of the outer wall of the transmission connecting rod to match the threaded hole formed on the top plate of the sleeve. Screwing the handle can make the transmission connecting rod move upward and downward relative to the sleeve, and move the limiting block up and down relative to the guide rod to adjust the pre-compression degree of the spring, that is, to adjust the downward elastic pressure applied to the floating cover.

[0029] Optionally, an annular body portion extending upward is formed on the upper end surface of the floating cover at a position close to the edge of the floating cover, and an annular body is provided on the outer side of the annular body portion, that is, the annular body sleeves the annular body portion in its inner circle. An elastic body is embedded on the side wall of the annular body portion. A plurality of fin plates are alternately distributed around the circumference on the annular body. The lower part of one end of the fin plate is hingedly matched with the annular body, and the upper part of the end of the fin plate is kept in contact with the elastic body.

[0030] The other end of the fin plate is formed with a first surface and a second surface, and the first surface is close to the free end of the fin plate relative to the second surface. The first surface and the second surface are both inclined surfaces that are inclined downward from the outside to the inside along the radial direction, and the angle formed by the first surface relative to the vertical surface is smaller than the angle formed by the second surface relative to the vertical surface. The first surface can contact the upper part of the conical cavity wall.

[0031] When the floating cover moves downward relative to the tank body, the second surface can contact the lower part of the conical cavity wall or the upper part of the annular flange, so as to force the fin plate to rotate relative to the annular body toward the side close to the central axis of the floating cover. At this time, the upper part of the hinged end of the fin plate and the annular body can compress the elastic body to elastically deform. On the contrary, when the floating cover moves upward relative to the tank body, the second surface can gradually separate from the upper part of the annular flange or the lower part of the conical cavity wall, during which the resilience of the elastic body will cause the fin plate to rotate relative to the annular body toward the side away from the central axis of the floating cover. Preferably, needle-shaped protrusions are distributed on the vertical wall of the fin plate.

[0032] The present invention also relates to a method for efficiently utilizing ozone to treat sewage, and relates to the use of the above-mentioned structure for efficiently utilizing ozone to treat sewage. The method for efficiently utilizing ozone to treat sewage includes the following process:

[0033] (I) The ozone-mixed gas discharged from the ozone generator is pressurized and sent into the mixing chamber of the ozone reaction tank and aerated to form a majority of ordinary bubbles and a majority of microbubbles, and then mixed with the high-pressure sewage jet directly introduced into the mixing chamber from the sewage tank;

[0034] (II) After the sewage mixed with aeration bubbles is sucked into the boosting chamber by the suction force generated by the rotation of the stirring paddle, the sewage is blocked by the floating cover and continuously accumulated in the boosting chamber until the internal pressure of the sewage can push the floating cover to float upward for a certain distance. Then, the sewage continues to flow into the top chamber and continues to flow upward. During this period, the ordinary bubbles generated by aeration can be crushed and divided into multiple microbubbles during the process of increasing internal pressure of the sewage. The microbubbles generated by aeration couple with ozone as the sewage rises, and the pollutants in the sewage are removed by the hydroxyl free radicals and ozone generated during the bubble rupture process.

[0035] The present invention also relates to a method for efficiently utilizing ozone to treat sewage, and relates to the use of the above-mentioned structure for efficiently utilizing ozone to treat sewage. The method for efficiently utilizing ozone to treat sewage includes the following process:

[0036] (I) The ozone-mixed gas discharged from the ozone generator and part of the sewage introduced from the sewage pool are mixed into a gas-water mixed liquid in a gas-liquid mixing pump and then pressurized and sent into the mixing chamber of the ozone reaction tank for aeration to form ordinary bubbles and microbubbles, which are then mixed with the high-pressure sewage jet directly introduced from the sewage pool into the mixing chamber;

[0037] (II) After the sewage mixed with aeration bubbles is sucked into the boosting chamber by the suction force generated by the rotation of the stirring paddle, the sewage is blocked by the floating cover and continuously accumulated in the boosting chamber until the internal pressure of the sewage can push the floating cover to float upward for a certain distance. Then, the sewage continues to flow into the top chamber and continues to flow upward. During this period, the ordinary bubbles generated by aeration can be crushed and divided into multiple microbubbles during the process of increasing internal pressure of the sewage. The microbubbles generated by aeration couple with ozone during the process of rising with the sewage, and the pollutants in the sewage are removed by the hydroxyl free radicals and ozone generated during the bubble rupture process.

[0038] The beneficial effects of the present invention are as follows: the method and structure for efficiently utilizing ozone to treat sewage disclosed by the present invention effectively solves the problem of low ozone utilization rate in the current process of using ozone to treat sewage, helps to improve the utilization rate of ozone in the process of using ozone to treat sewage, and reduces the cost of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1It is a structural diagram of embodiment 1 of the present invention.

[0040] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0041] Figure 3 This is a schematic diagram of the structure of the ozone reaction tank under the scheme of the present invention.

[0042] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle.

[0043] Figure 5 The figure is a schematic top view of the structure of the floating cover involved in the solution of the present invention.

[0044] Figure 6 It is a schematic diagram of the top view of the cylinder involved in the solution of the present invention.

[0045] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure at BB in the middle.

[0046] Figure 8 The figure is a schematic diagram of the partial structure of the ozone reaction tank after improvement under the scheme of the present invention.

[0047] Fig. 9 for Figure 8 A schematic top view of the structure of the floating cover corresponding to the illustrated embodiment.

[0048] Fig.10 To be applicable to Figure 8 A schematic top view of the structure of the annular body of the illustrated embodiment.

[0049] Fig.11 for Fig.10 Schematic diagram of the local enlarged structure at point I in the middle.

[0050] Fig.12 This is a schematic diagram of the structure after the guide rod associated structure is optimized under the solution of the present invention.

[0051] Fig.13 It is a schematic diagram of the local structure after the impact part is optimized under the solution of the present invention.

[0052] Fig.14 for Figure 3 Schematic diagram of the operating status of the ozone reaction tank shown.

[0053] In the figure: 100 ozone generator, 101 gas flow valve, 102 booster pump 1, 103 pressure gauge; 200 sewage tank, 201 drainage pump, 202 booster pump 2, 203 water ring, 204 liquid flow valve; 300 ozone reaction tank, 301 mixing chamber, 302 booster chamber, 303 top chamber; 400 sedimentation tank; 500 gas-liquid mixing pump;

[0054] 10 tank body, 11 water inlet pipe, 12 air inlet pipe, 121 aeration plate, 13 drainage pipe, 14 radial edge arm, 15 annular flange, 16 conical cavity wall, 161 first-order conical cavity wall, 162 second-order conical cavity wall; 20 barrel part, 21 strip slot hole, 22 columnar flange; 30 cylinder body, 31 flaring part, 32 impact part, 321 connecting frame, 322 wire, 323 oscillation spring, 324 spherical hinge block, 33 connecting plate; 4 0 stirring assembly, 41 transmission rod, 42 motor, 43 stirring paddle; 50 floating cover, 51 shaft hole, 52 boss, 53 through hole, 54 annular body, 541 elastic body, 55 annular body, 551 main body, 552 hinge surface, 553 weld, 56 fin plate, 561 surface one, 562 surface two; 60 clamping assembly, 61 guide rod, 62 spring, 63 limiting block, 631 transmission connecting rod, 632 cavity, 633 handle, 634 sleeve. DETAILED DESCRIPTION

[0055] The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the terms such as "upper", "lower", "front", "back", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical contents.

[0056] Embodiment 1: Figure 1 , Figure 3The structure for efficiently treating sewage with ozone shown in the figure includes an ozone generator 100, a sewage tank 200, an ozone reaction tank 300 and a sedimentation tank 400. The ozone generator 100 is connected to an air inlet pipe 12 arranged at the lower part of the ozone reaction tank 300 through a pipeline. At the same time, a gas flow valve 101 (or gas flow regulating valve), a booster pump 1 102, a pressure gauge 103 and a solenoid valve are also provided on the connecting pipeline between the ozone generator 100 and the air inlet pipe 12. A water distribution ring 203 is provided at the lower part of the ozone reaction tank 300, and the water inlet end of the water distribution ring 203 is connected to the sewage tank 200 through a pipeline. At the same time, a drainage pump 201, a booster pump 202 and a solenoid valve are provided on the connecting pipeline between the water distribution ring 203 and the sewage tank 200. The water outlet end of the water distribution ring 203 is connected to a plurality of water inlet pipes 11 arranged around the circumference at the lower part of the ozone reaction tank 300. The jet directions of the multiple jets sent into the ozone reaction tank 300 by the water inlet pipe 11 are all inclined downward and directed toward the axial center of the inner cavity of the ozone reaction tank 300. A drain pipe 13 is provided at the upper part of the ozone reaction tank 300, and the drain pipe 13 is connected to the sedimentation tank 400 through a pipeline to recover the wastewater after oxidation treatment and unreacted ozone.

[0057] Embodiment 2: Figure 2 The structure of efficiently utilizing ozone to treat sewage shown in the embodiment further includes a gas-liquid mixing pump 500 compared to the first embodiment. The liquid inlet end of the gas-liquid mixing pump 500 is connected to the pipeline between the sewage pool 200 and the water distribution ring 203 through a pipeline, and the connection position is located on the upstream side of the booster pump 202. A flow regulating valve 204 is provided on a section of the pipeline between the gas-liquid mixing pump 500 and the sewage pool 200, and the amount of liquid delivered to the gas-liquid mixing pump 500 can be controlled by the flow regulating valve 204. The gas inlet end of the gas-liquid mixing pump 500 is connected to the pipeline between the ozone generator 100 and the air inlet pipe 12 through a pipeline, and the connection position is located on the upstream side of the booster pump 1 102. The output end of the gas-liquid mixing pump 500 is connected to the booster pump 1 102 through a pipeline.

[0058] Therefore, in the present invention, the medium introduced into the inner cavity of the ozone reaction tank 300 through the air inlet pipe 12 may be a gas medium containing ozone, or may be a gas-liquid mixture of ozone-containing gas and sewage.

[0059] The principle of the scheme of the present invention is: ozone aeration and sewage are mixed successively from bottom to top in the ozone reaction tank 300, pressurized and reacted, flowing upward and continuing to react (occurring in the top chamber 303, see Figure 3 , Fig.14) process to improve the utilization rate of ozone. Given that ozone itself can generate hydroxyl radicals at the gas-liquid interface, combined with its oxidation ability, the larger the specific surface area of ​​ozone bubbles, the higher the hydroxyl radical yield, the higher the ozone mass transfer efficiency, and the greater the ability to oxidize and decompose organic matter. After the gas mixed with ozone enters the inner cavity of the ozone reaction tank 300 from the bottom of the ozone reaction tank 300 through aeration, the ozone bubbles flow upward with the sewage, and the internal pressure of the sewage increases, causing the ozone bubbles generated by aeration to rupture and form more microbubbles; the obstruction of the upward flow of sewage can increase the hydraulic retention time. The microbubbles have a large specific surface area and a large internal pressure in the solution (sewage), which increases the charge density of the double electric layer on the surface. When the microbubbles rupture, the extremely high concentration of positive and negative charges discharge, which can destroy water molecules to produce hydroxyl radicals, improve the degradation efficiency of ozone on pollutants, and improve the degree of reaction between ozone and organic matter in sewage. Premixing ozone and sewage before aerating them into the ozone reaction tank 300 can make the aeration bubbles form microbubbles of smaller size, further improving the utilization rate of ozone.

[0060] Compared with the solution of the first embodiment, the solution of the second embodiment is more helpful to improve the microbubble degree of ozone, and the solution of the second embodiment is better than the solution of the first embodiment in improving the utilization rate of ozone.

[0061] The ozone reaction tank 300 involved in the above two embodiments can be designed as follows.

[0062] like Figures 1 to 3 As shown, a stirring assembly 40 is provided on the ozone reaction tank 300, and the stirring assembly 40 includes a transmission rod 41, a motor 42 and a stirring paddle 43. The transmission rod 41 is arranged in the vertical direction, and the upper end extends to the outside of the top surface of the tank body 10 of the ozone reaction tank 300 and matches the motor 42, so that the motor 42 can drive the transmission rod 41 to rotate around the vertical axis. The lower end of the transmission rod 41 extends into the inner cavity of the tank body 10. The stirring paddle 43 is fixed to the lower end of the transmission rod 41, and can rotate synchronously with the transmission rod 41 around the vertical axis.

[0063] The inner cavity of the ozone reaction tank 300 is divided into a mixing chamber 301, a booster chamber 302 and a top chamber 303 from bottom to top. On the tank body 10, four water inlet pipes 11 are arranged alternately around the circumference corresponding to the lower position of the mixing chamber 301, and the air inlet pipe 12 is arranged on the bottom wall of the tank body 10. The water distribution ring 203 is connected to the four water inlet pipes 11 respectively, so that sewage can be injected into the mixing chamber 301 evenly and simultaneously from four directions. The injected sewage water flow (see Fig.14 ) is tilted downward and rushes toward the aeration plate 121 (i.e., the sprayed liquid flow converges toward the axis direction close to the tank body 10).

[0064] An aeration plate 121 connected to the inner end of the air inlet pipe 12 is provided on the inner bottom of the mixing chamber 301. The stirring paddle 43 is provided in the boosting chamber 302 and can suck the sewage and ozone (bubbles) gathered in the mixing chamber 301 upward into the boosting chamber 302 when the stirring paddle 43 rotates. A floating cover 50 is provided at the position where the boosting chamber 302 and the top chamber 303 are connected. The floating cover 50 can move up and down in the inner cavity of the ozone reaction tank 300 relative to the tank body 10 of the ozone reaction tank 300. At the same time, an annular flange 15 and a conical cavity wall 16 are formed on the inner wall of the tank body 10 at a height position corresponding to the floating cover 50, and the annular flange 15 is located directly below the conical cavity wall 16.

[0065] The conical cavity wall 16 has a narrowed end close to the annular flange 15 and the inner diameter of the narrowed end port is consistent with the inner diameter of the annular flange 15. Therefore, the inner diameter of the conical cavity wall 16 is larger than the inner diameter of the annular flange 15 except for the lower end port (the narrowed end port).

[0066] The side wall of the floating cover 50 can contact the inner wall of the annular flange 15 , and the opposing surfaces thereof form a surface-to-surface matching relationship, that is, the outer diameter of the floating cover 50 is consistent with the inner diameter of the annular flange 15 .

[0067] As the floating cover 50 moves up and down relative to the tank body 10, the floating cover 50 can switchably correspond to the inner cavity of the annular flange 15 and the inner cavity of the conical cavity wall 16, and a closed matching structure is formed between the side wall of the floating cover 50 and the inner wall of the tank body 10 (see FIG. Fig.14 ) and open matching structures (see e.g. Figure 3 , Figure 8 ).

[0068] By setting the floating cover 50, the mixed solution of sewage and ozone (bubbles) can be hindered from flowing from the boosting chamber 302 to the top chamber 303. At least after a pressure difference sufficient to overcome the weight of the floating cover 50 is formed on the upper and lower sides of the floating cover 50, the floating cover 50 can be gradually pushed upward relative to the tank body 10, and the side wall of the floating cover 50 corresponds to the conical chamber wall 16 and forms a radial spacing of sufficient size, so that the sewage (after oxidation treatment) gradually flows from the boosting chamber 302 to the top chamber 303 at a certain flow rate. Therefore, the setting of the floating cover 50 helps to increase the internal pressure of the solution in the boosting chamber 302. On the one hand, it can force the ozone bubbles to burst to form smaller bubbles (microbubbles) to increase the contact surface ratio of ozone and sewage, and improve the oxidation treatment capacity of ozone for organic pollutants in sewage; on the other hand, since the flow rate of the solution from the boosting chamber 302 to the top chamber 303 is limited, the contact reaction time of ozone and sewage can be increased. Therefore, the present invention helps to improve the utilization rate of ozone and reduce the cost of sewage treatment.

[0069] The drain pipe 13 is connected to the upper part of the top cavity 303, and is used to discharge the wastewater solution after oxidation to the outside of the ozone reaction tank 300. After flowing through the sedimentation tank 400, the sediment and liquid in the wastewater are initially separated, and the unreacted ozone is recovered to avoid air pollution caused by ozone.

[0070] like Figures 3 to 7 As shown, a barrel portion 20 , a cylinder body 30 and a pressing assembly 60 are provided inside the tank body 10 of the ozone reaction tank 300 .

[0071] On the inner wall of the tank body 10, a plurality of radial edge arms 14 are formed at the position where the mixing chamber 301 and the boost chamber 302 are connected. The lower end of the barrel portion 20 is fixed above the radial edge arms 14 and extends upward into the boost chamber 302. Figure 3 , Figure 8 , Fig.14 In the embodiment, the upper end of the barrel portion 20 extends to a height equivalent to the height of the annular flange 15, but in other specific embodiments, the upper end of the barrel portion 20 may also extend to a height upward or downward relative to the height of the annular flange 15. The lower end of the barrel body of the barrel portion 20 is open, the upper end is closed, and a cylindrical flange 22 extending upward into the top cavity 303 is formed on the top wall of the barrel body.

[0072] The shaft hole 51 formed in the middle of the floating cover 50 matches the cylindrical flange 22, so that the cylindrical flange 22 can guide the up and down movement / floating of the floating cover 50. The inner diameter of the shaft hole 51 is not less than the outer diameter of the cylindrical flange 22.

[0073] The barrel body of the barrel portion 20 is disposed in the pressurizing chamber 302 and a radial distance is formed between the side wall of the barrel body and the inner wall of the pressurizing chamber 302. A plurality of strip-shaped slots 21 are arranged alternately around the circumference of the barrel body of the barrel portion 20 and extend in the vertical direction. Figure 3 , Figure 7 As shown, the width of the slot of the strip slot 21 gradually increases from top to bottom. The strip slot 21 basically runs through the entire height of the barrel side wall of the barrel portion 20. Figure 3 Except for the two strip slots 21 on the left and right sides, the other strip slots are not shown one by one. Figure 7 There are indications.

[0074] The cylinder 30 establishes a fixed connection relationship with the inner wall of the barrel cavity of the barrel portion 20 through the connecting plate 33 arranged on its side wall, so that the cylinder 30 is coaxially arranged with the barrel body of the barrel portion 20 and placed in the inner cavity of the barrel body, and a radial distance is formed between the outer wall of the cylinder 30 and the inner wall of the barrel cavity of the barrel portion 20.

[0075] The upper and lower ends of the barrel 30 are both open, and the lower end of the barrel 30 extends into the upper part of the mixing chamber 301, and the upper end of the barrel 30 extends into the barrel cavity of the barrel part 20 and forms a vertical distance relative to the inner end surface of the top wall of the barrel.

[0076] The stirring paddle 43 is correspondingly arranged at the middle and upper height position of the barrel cavity of the barrel 30. When the stirring paddle 43 rotates, it can suck the sewage mixed with ozone bubbles into the barrel 30 from the lower port of the barrel 30 in large quantities, and discharge it from the upper port of the barrel 30 into the barrel body of the barrel part 20, and discharge it from the barrel part 20 through the strip slots 21 on the barrel body and flow into the radial spacing space formed between the boosting chamber 302 and the barrel part 20. Part of the liquid flow may even flow back from the lower part of the strip slots 21 into the barrel cavity of the barrel part 20, and flow downward back to the upper part of the mixing chamber 301.

[0077] Preferably, a flared portion 31 is formed at the upper end of the cylinder 30 and the large end of the flared portion 31 faces upwards, so as to facilitate the sewage to diffuse radially outwards. The inner diameter of the small end of the flared portion 31 is consistent with the inner diameter of the cylinder 30 .

[0078] By setting the mutually nested cylinder 30 and barrel 20, on the one hand, the flow time of the sewage solution in the boosting chamber 302 can be significantly prolonged, and the mixing degree and reaction time between the sewage and the ozone microbubbles can be improved; on the other hand, the internal pressure of the liquid in the boosting chamber 302 can be increased, so that more ozone bubbles are compressed and burst, forming smaller microbubbles, and improving the reaction utilization rate of ozone. In addition, the mixing effect of sewage and gas can be improved inside the boosting chamber 302 and between the boosting chamber 302 and the mixing chamber 301, forming local mixed flow / turbulence, making the internal shear of the sewage more intense and the convection impact more intense, which helps to improve the sewage purification reaction effect.

[0079] When sewage flows from the barrel portion 20 into the pressurizing chamber 302 through the strip grooves 21, the sewage will be sheared by the edges of the strip grooves 2. This shearing effect can not only promote further mixing of the sewage and the ozone bubbles, but also further shear the bubbles to break them (especially those microbubbles that cannot be easily broken as the internal pressure of the sewage increases) and divide them into multiple bubbles or smaller microbubbles.

[0080] Can be as Figure 3 , Figure 7 As shown, the slot width of the strip slot 21 is gradually increased from top to bottom, or the slot width of the strip slot 21 is discretely increased from top to bottom. Making the lower slot width of the strip slot 21 larger than the upper slot width can increase the internal pressure of the liquid in the barrel 20 and improve the degree of bubble splitting under pressure; on the other hand, it can increase the reflux of sewage between the boosting chamber 302 and the barrel chamber and mixing chamber 301 of the barrel 20, improve the turbulence of the liquid at the periphery of the lower port of the cylinder 30, enhance the shearing effect and collision degree of the liquid inside the liquid, and promote the mixing effect of the sewage and the floating bubbles generated by the new aeration.

[0081] The impact part 32 is fixedly provided at the lower part of the cylinder 3030, and the impact part 32 is relatively located directly below the stirring paddle 43. The impact part 32 includes a connecting frame 321 fixedly connected to the cylinder 30 and a plurality of silk threads 322 arranged on the connecting frame 321. The plurality of silk threads 322 are arranged in multiple layers (in Figure 6 , Figure 7 Only one layer is shown in the figure, and the wires 322 in two adjacent layers are in an overlapping and interlaced state. By interlacing the wires 322, the wires 322 are stacked up and down to present an interlaced net form (i.e., a net-like shape when viewed from above), and the bubbles can be cut during their rise, so that the bubbles are split into multiple pieces, and are fully mixed with the sewage in advance.

[0082] like Fig.13As shown, the two ends of the multiple threads 322 can be fixed on a pair of oscillation springs 323 at the same time, and the other ends of the two oscillation springs 323 are respectively connected to spherical hinge blocks 324, so that the spherical hinge blocks 324 are hinged to the grooves on the connecting frame 321. Under this scheme, when impacted by the liquid flow, the threads 322 can vibrate, which helps to improve the cutting effect / ability of the threads 322 on bubbles.

[0083] The clamping assembly 60 includes twelve guide rods 61 formed on the top wall of the barrel body of the barrel portion 20 and distributed alternately around the circumference, a spring 62 mounted on each guide rod 61, and a limiting block 63 arranged on each guide rod 61 and capable of adjusting the pre-compression state / degree of the spring 62.

[0084] Twelve through holes 53 are formed on the floating cover 50, which are matched with the guide rods 61 one by one. The upper end of the guide rod 61 passes through the through hole 53 and extends upward for a certain length. The lower end of the spring 62 contacts the upper end surface of the floating cover 50, and the upper end of the spring 62 contacts the lower end surface of the limiting block 63. Figure 3 , Figure 5 , Figures 8 to 9 As shown, the outer periphery of the floating cover 50 is umbrella-shaped, an annular boss 52 is formed in the middle of the upper end surface, the shaft hole 51 is located in the middle of the boss 52, and the through holes 53 are distributed on the outer periphery of the boss 52.

[0085] By adjusting the pre-compression degree of the spring 62, the elastic force of the spring 62 in the initial state can be controlled, and downward pressure can be applied to the floating cover 50. At this time, if the floating cover 50 is moved upward from the annular flange 15 to the conical cavity wall 16, a pressure difference sufficient to overcome the weight of the floating cover 50 and the spring pressure needs to be formed between the upper and lower surfaces of the floating cover 50. Therefore, the setting of the pressing assembly 60 can increase the resistance of the sewage to flow upward into the top cavity 303, increase the internal pressure of the liquid in the boosting cavity 302, inhibit the speed of the sewage flowing upward, and prolong the contact reaction time with the sewage.

[0086] The inner diameter of the through hole 53 may be consistent with the outer diameter of the guide rod 61; or the inner diameter of the through hole 53 may be greater than the outer diameter of the guide rod 61, and at this time, the pre-compression degree of each spring 62 may be basically consistent, or the pre-compression degree of the left and right opposite sides and / or the front and rear opposite sides may be different.

[0087] In order to facilitate the flexible adjustment of the pre-compression degree of the spring 62, the pre-compression degree can be adjusted at any time, and the pre-compression degree of the spring 62 can also be adjusted during operation. Fig.12As shown, a transmission connecting rod 631 can be matched with the limiting block 63, and the transmission connecting rod 631 can be matched with a sleeve 634 fixedly installed on the top wall of the tank body 10. A cavity 632 is formed at the lower part of the transmission connecting rod 631, and the upper end of the guide rod 61 passes through the axial hole on the limiting block 63 and then extends into the cavity 632. The vertical extension length of the cavity 632 should be sufficient to meet the vertical movement travel requirement of the transmission connecting rod 631 relative to the guide rod 61 (upper end). A sealing ring is provided between the lower end inner wall of the sleeve 634 and the outer wall of the transmission connecting rod 631, and the upper end of the transmission connecting rod 631 passes through the top plate of the sleeve 634 and matches the handle 633. An external thread section is formed on the upper part of the outer wall of the transmission connecting rod 631 to match the threaded hole formed on the top plate of the sleeve 634. Twisting the handle 633 can cause the transmission connecting rod 631 to move upward and downward relative to the sleeve 634, and move the limiting block 63 up and down relative to the guide rod 61 to adjust the pre-compression degree of the spring 62, that is, to adjust the downward elastic pressure applied to the floating cover 50.

[0088] The transmission structure for adjusting the upward and downward movement of the limiting block 63 relative to the guide rod 61 has the function of protecting the threaded matching part of the transmission connecting rod 631 and the sleeve 634, which can prevent sewage from damaging the threaded matching structure between the two and ensure the reliability of regulating the pre-compression degree of the spring 62.

[0089] In the scheme of the present invention, the floating cover 50 will float up and down and change its height position as the internal pressure of the liquid in the boost chamber 302 changes. It can adapt to the change of the stirring paddle 43 in a certain speed range. The up and down floating action of the floating cover 50 will form a fluctuating internal pressure in the boost chamber 302, which helps to cause the bubbles to be further broken by the internal pressure. In addition, the turbulent state of the liquid flow at the outer edge of the floating cover 50 will also be affected by the up and down floating action of the floating cover 50, so that the turbulent state is constantly changing, which improves the disturbance of the sewage.

[0090] like Figures 8 to 11 As shown, on the upper end surface of the floating cover 50, an upwardly extending ring body portion 54 is formed at a position close to the edge of the floating cover 50 (side wall), and an annular body 55 is provided on the outer side of the annular body portion 54, that is, the annular body 55 fits the annular body portion 54 in its inner circle.

[0091] An elastic body 541 is embedded on the side wall of the annular body 54. A plurality of fin plates 56 are alternately distributed around the circumference of the annular body 55. The lower part of one end of the fin plate 56 is hingedly matched with the annular body 55, and the upper part of the end of the fin plate 56 can maintain contact with the elastic body 541. The other end of the fin plate 56 is formed with a surface 1 561 and a surface 2 562, and the surface 1 561 is closer to the free end of the fin plate 56 than the surface 2 562. The surface 1 561 and the surface 2 562 are both inclined surfaces that are inclined downward from the outside to the inside in the radial direction, and the angle formed by the surface 1 561 relative to the vertical plane is smaller than the angle formed by the surface 2 562 relative to the vertical plane.

[0092] The first surface 561 can contact the upper part of the conical cavity wall 16. The second surface 562 can contact the lower part of the conical cavity wall 16 or the upper part of the annular flange 15 when the floating cover 50 moves downward relative to the tank body 10, so as to force the fin plate 56 to rotate relative to the annular body 55 toward the side close to the central axis of the floating cover 50 (corresponding to the rotation of the fin plate 56 at the center of the floating cover 50). Figure 8 The fin plate 56 shown on the left side, that is, the fin plate 56 rotates in a clockwise direction), at this time, the upper part of the hinged end of the fin plate 56 and the annular body 55 can compress the elastic body 541 to elastically deform. On the contrary, when the floating cover 50 moves upward relative to the tank body 10, the second surface 562 can gradually separate / disengage from the upper part of the annular flange 15 or the lower part of the conical cavity wall 16. During this period, the resilience of the elastic body 541 will cause the fin plate 56 to rotate relative to the annular body 55 toward the side away from the central axis of the floating cover 50 (corresponding to Figure 8 As shown, the fin plate 56 is located on the left side, that is, the fin plate 56 rotates in a counterclockwise direction).

[0093] After the fin plates 56 are arranged on the periphery of the edge of the floating cover 50, when the sewage flows through the radial gap formed between the side wall of the floating cover 50 and the conical cavity wall 16, a large amount of sewage needs to pass through the gap between two adjacent fin plates 56 and the gap between the edge of the free end of the fin plate 56 and the conical cavity wall 16. During this period, the obstruction of the fin plates 56 can not only enhance the turbulence of the sewage, but also further shear the microbubbles mixed in the sewage (the microbubbles are not easily broken by the increase of the internal pressure of the sewage due to their small volume), so that the microbubbles are further divided into smaller microbubbles to fully react with the sewage, which helps to improve the utilization efficiency of ozone.

[0094] Needle-shaped protrusions may be distributed on the vertical wall surface of the fin plate 56 , so that when air bubbles mixed in sewage flow through the gap between two adjacent fin plates 56 , the needle-shaped protrusions can pierce the air bubbles.

[0095] like Fig.10 , Fig.11 As shown, a plurality of hinged surfaces 552 are alternately arranged around the circumference on the main body 551 of the annular body 55. A circular hole is arranged at the lower part of one end of the fin plate 56, and the fin plate 56 matches the hinged surface 552 through the circular hole. There is a disconnection on the annular body 55, and the fin plates 56 are mounted on the main body 551 of the annular body 55 one by one from the disconnection, and then the disconnection is welded to form a weld 553. Each fin plate 56 corresponds to a hinged surface 552. A plurality of clamping arms are arranged on the main body 551 of the annular body 55 to connect with the upper end surface of the floating cover 50 and / or the lower end (root) of the ring body 54, so that a fixed connection relationship is established between the annular body 55 and the floating cover 50.

[0096] The overall thickness of the fin plate 56 can be uniform, or the thickness of the fin plate 56 close to the free end can be gradually thinner from the inside to the outside.

[0097] like Figure 3 , Figure 8 , Fig.14 As shown, the conical cavity wall 16 is a multi-step conical cavity wall, specifically including a first-step conical cavity wall 161 and a second-step conical cavity wall 162, and the second-step conical cavity wall 162 is located above the first-step conical cavity wall 161. The extension surface of the second-step conical cavity wall 162 is longer than the extension surface of the first-step conical cavity wall 161. The angle formed by the second-step conical cavity wall 162 relative to the vertical surface is smaller than the angle formed by the first-step conical cavity wall 161 relative to the vertical surface. The second surface 562 on the fin plate 56 can contact with the first-step conical cavity wall 161 (and be pushed to rotate), and the first surface 561 can contact with the second-step conical cavity wall 162.

[0098] In the implementation scheme of the present invention, the height of the ozone reaction tank 300 involved is moderate. Compared with the current design of increasing the height of the tank body to increase the pressure and prolong the reaction time of ozone and sewage, not only the overall shape of the whole structure is significantly reduced, making the whole reaction device more compact, but also the reaction efficiency is relatively higher. The present invention increases the internal pressure of the solution in the boosting chamber 302, squeezes a part of the ozone bubbles by the pressure in the solution, and gradually breaks the ozone bubbles generated by aeration or mixing by a gas-liquid mixing pump. When the ozone bubbles are compressed or sheared due to pressure, the particle size of the generated microbubbles is mostly less than 80 microns, and can even be less than 45 microns, which can increase the specific surface area of ​​the microbubbles, improve the solubility of ozone, and make the microbubbles produce a large number of free radicals on their surface after coupling with ozone gas in the solution (water) to react with organic matter in sewage. At the same time, the flow resistance of the upward flow is sufficient to prolong the time for the bubbles to rise, and increase the contact reaction time of the ozone microbubbles with sewage, so as to significantly improve the utilization efficiency of ozone. Under the scheme of the present invention, the concentration of ozone and free radicals formed in the sewage in the ozone reaction tank 300 is significantly improved compared with the ordinary aeration method, which helps to significantly improve the removal rate of pollutants such as COD, BOD, and micropollutants in the sewage.

[0099] The method for efficiently utilizing ozone to treat sewage, which the present invention relates to, involves the use of the above-mentioned structure for efficiently utilizing ozone to treat sewage, and the method for efficiently utilizing ozone to treat sewage, which involves the following process:

[0100] (I) The gas mixed with ozone discharged from the ozone generator 100 is pressurized and sent into the mixing chamber 301 of the ozone reaction tank 300 and aerated to form a majority of ordinary bubbles and a majority of microbubbles, and then pre-mixed with the high-pressure sewage jet directly introduced into the mixing chamber 301 from the sewage tank 200;

[0101] (II) After the sewage mixed with aeration bubbles is sucked into the pressurizing chamber 302 by the suction force generated by the rotation of the stirring paddle 43, the sewage will be blocked by the floating cover 50 when it flows upward. After the sewage internal pressure accumulates in the pressurizing chamber 302 and can push the floating cover 50 to float upward for a certain distance, the sewage can continue to flow into the top chamber 303 and continue to flow upward; during this period, the ordinary bubbles generated by aeration can be crushed and divided into multiple microbubbles during the process of increasing sewage internal pressure. The microbubbles generated by aeration couple with ozone as the sewage rises, and the pollutants in the sewage are removed by the hydroxyl free radicals and ozone generated during the bubble rupture process.

[0102] The present invention also relates to another method for efficiently utilizing ozone to treat sewage, and relates to the use of the above-mentioned structure for efficiently utilizing ozone to treat sewage. The method for efficiently utilizing ozone to treat sewage includes the following process:

[0103] (I) The ozone-mixed gas discharged from the ozone generator 300 and part of the sewage introduced from the sewage pool 200 are mixed into a gas-water mixed liquid in the gas-liquid mixing pump 500 and pressurized and then sent into the mixing chamber 301 of the ozone reaction tank 300 for aeration to form ordinary bubbles and microbubbles, which are then pre-mixed with the high-pressure sewage jet directly introduced from the sewage pool 200 into the mixing chamber 301;

[0104] (II) After the sewage mixed with aeration bubbles is sucked into the pressurizing chamber 302 by the suction force generated by the rotation of the stirring paddle 43, the sewage is blocked by the floating cover 50 during the upward flow and can be continuously accumulated in the pressurizing chamber 302 until the internal pressure of the sewage can push the floating cover 50 to float upward for a certain distance. Only then can the sewage continue to flow into the top chamber 303 and continue to flow upward; during this period, the ordinary bubbles generated by aeration can be crushed and divided into multiple microbubbles in the process of increasing the internal pressure of the sewage. The microbubbles generated by aeration couple with ozone in the process of rising with the sewage, and the pollutants in the sewage are removed by the hydroxyl free radicals and ozone generated in the process of bubble rupture.

[0105] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be improved in many aspects without violating the overall concept, and those familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A structure for efficiently utilizing ozone to treat sewage, comprising an ozone generator (100), characterized in that: It also comprises an ozone reaction tank (300); the ozone generator (100) is connected to the outer end of an air inlet pipe (12) provided at the bottom of the ozone reaction tank (300) through a pipeline, and at least a gas flow valve (101) and a booster pump (102) are provided on the connecting pipeline between the ozone generator (100) and the air inlet pipe (12); a water distribution ring (203) is provided at the bottom of the ozone reaction tank (300), and the water inlet end of the water distribution ring (203) is connected to a sewage pool (200) through a pipeline, and at least a booster pump (202) is provided on the connecting pipeline between the water distribution ring (203) and the sewage pool (200); The water outlet end of the water distribution ring (203) is connected to a plurality of water inlet pipes (11) arranged around the circumference at the lower part of the ozone reaction tank (300); the flow directions of the plurality of jets sent into the ozone reaction tank (300) by the water inlet pipes (11) are all inclined downward and directed toward the axial direction of the inner cavity of the ozone reaction tank (300); An agitation assembly (40) is provided on the ozone reaction tank (300), and an agitation paddle (43) on the agitation assembly (40) is capable of rotating about a vertical axis; the inner cavity of the ozone reaction tank (300) is divided into a mixing chamber (301), a boosting chamber (302), and a top chamber (303) from bottom to top; an aeration plate (121) connected to the inner end of an air inlet pipe (12) is provided on the inner bottom of the mixing chamber (301); the agitation paddle (43) is provided in the boosting chamber (302), and when it rotates, it can draw sewage and ozone gathered in the mixing chamber (301) upwards into the boosting chamber (302); a floating cover (50) is provided at a position where the boosting chamber (302) and the top chamber (303) are connected, and the floating cover (50) can move up and down in the inner cavity of the ozone reaction tank (300) relative to the tank body (10) of the ozone reaction tank (300); An annular flange (15) and a conical cavity wall (16) are formed on the inner wall of the tank body (10) at a height position corresponding to the floating cover (50), and the annular flange (15) is located directly below the conical cavity wall (16); The conical cavity wall (16) has a concave end close to the annular flange (15), and the inner diameter of the concave end is not greater than the inner diameter of the annular flange (15); at the same time, the inner diameter of the lower part of the conical cavity wall (16) is greater than the inner diameter of the annular flange (15); The side wall of the floating cover (50) contacts the inner wall of the annular flange (15); as the floating cover (50) moves up and down relative to the tank body (10), the floating cover (50) can switchably correspond to the inside of the annular flange (15) and to the inside of the conical cavity wall (16), and the side wall of the floating cover (50) and the inner wall of the tank body (10) switchably form a closed matching structure and an open matching structure; A radial edge arm (14) is formed on the inner wall of the tank body (10) at a position where the mixing chamber (301) and the boost chamber (302) are connected, and a barrel portion (20) extending upward is fixedly provided on the radial edge arm (14); the barrel portion (20) has an open lower end and a closed upper end, and a columnar flange (22) extending upward into the top chamber (303) is formed on the top wall of the barrel body; The axial hole formed in the middle of the floating cover (50) matches the cylindrical flange (22), and the cylindrical flange (22) can guide the floating cover (50) to move up and down; The barrel body of the barrel portion (20) is correspondingly arranged in the boost chamber (302), and a radial spacing is formed between the side wall of the barrel body and the inner wall of the boost chamber (302); a plurality of strip-shaped slots (21) are alternately arranged around the circumference of the barrel body of the barrel portion (20), and the strip-shaped slots (21) extend in the vertical direction; A cylinder (30) having openings at both ends is fixedly disposed in the barrel cavity of the barrel portion (20), and a radial spacing is formed between the side wall of the cylinder (30) and the inner wall of the barrel cavity; the lower port of the cylinder (30) extends into the upper part of the mixing chamber (301), and the upper port extends into the barrel cavity of the barrel portion (20) and forms a vertical spacing with respect to the inner end surface of the top wall of the cylinder; the stirring paddle (43) is correspondingly disposed in the middle part or the upper part of the cylinder (30), so that when the stirring paddle (43) rotates, it can suck a large amount of sewage from the lower port of the cylinder (30) into the cylinder (30).

2. The structure for efficiently utilizing ozone to treat sewage according to claim 1 is characterized in that: The slot width of the strip slot hole (21) increases gradually or in a stepwise manner from top to bottom.

3. The structure for efficiently utilizing ozone to treat sewage according to claim 1 is characterized in that: An impact part (32) is fixedly provided at the lower part of the cylinder (30) and is relatively located below the stirring paddle (43); the impact part (32) comprises a connecting frame (321) connected to the cylinder (30) and a plurality of silk threads (322) arranged on the connecting frame (321); the silk threads (322) are arranged in multiple layers in an alternating manner up and down, and the silk threads (322) in two adjacent layers are in a state of overlapping and crossing.

4. The structure for efficiently treating sewage using ozone according to claim 1 is characterized in that: The device also includes a pressing assembly (60), the pressing assembly (60) including a plurality of guide rods (61) formed on the top wall of the barrel body of the barrel portion (20) and distributed alternately around the circumference, a spring (62) sleeved on the guide rods (61), and a limiting block (63) provided on the guide rods (61) and capable of adjusting the pre-compression degree of the spring (62); A plurality of through holes (53) corresponding to the guide rods (61) are formed on the floating cover (50); the upper end of the guide rod (61) passes through the through hole (53) and extends upward; the lower end of the spring (62) contacts the upper end surface of the floating cover (50).

5. The structure for efficiently treating sewage with ozone according to claim 1 is characterized in that: An annular body (54) extending upward is formed on the upper end surface of the floating cover (50) at a position close to the edge of the floating cover (50), and an annular body (55) is provided on the outer side of the annular body (54); An elastic body (541) is embedded on the side wall of the annular body (54); a plurality of fin plates (56) are alternately arranged around the circumference of the annular body (55); a lower portion of one end of the fin plate (56) is hingedly matched with the annular body (55), and an upper portion of the end of the fin plate (56) can maintain contact with the elastic body (541); a first surface (561) and a second surface (562) are formed on the other end of the fin plate (56), and the first surface (561) is opposite to the second surface (562) and is close to the free end of the fin plate (56); The first surface (561) can contact the upper part of the conical cavity wall (16); the second surface (562) can contact the lower part of the conical cavity wall (16) or the upper part of the annular flange (15) when the floating cover (50) moves downward relative to the tank body (10), so that the fin plate (56) rotates relative to the annular body (55) toward the side close to the central axis of the floating cover (50), and the upper part of the hinged end of the fin plate (56) and the annular body (55) presses the elastic body (541) to elastically deform; when the floating cover (50) moves upward relative to the tank body (10), the second surface (562) can gradually separate from the upper part of the annular flange (15) or the lower part of the conical cavity wall (16), and the rebound force of the elastic body (541) can cause the fin plate (56) to rotate relative to the annular body (55) toward the side away from the central axis of the floating cover (50).

6. The structure for efficiently utilizing ozone to treat sewage according to claim 1 is characterized in that: It also includes a gas-liquid mixing pump (500); the liquid inlet end of the gas-liquid mixing pump (500) is connected to the sewage pool (200) and the connection position is located on the upstream side of the second booster pump (202); a flow regulating valve (204) is provided on the pipeline between the gas-liquid mixing pump (500) and the sewage pool (200); the gas inlet end of the gas-liquid mixing pump (500) is connected to the ozone generator (100) and the gas-liquid output end of the gas-liquid mixing pump (500) is connected to the input end of the first booster pump (102) through a pipeline.

7. A method for treating sewage using the structure for treating sewage using ozone efficiently as claimed in any one of claims 1 to 5, characterized in that the treatment method comprises the following steps: (I) the gas mixed with ozone discharged from the ozone generator (100) is pressurized and sent into the mixing chamber (301) of the ozone reaction tank (300) and aerated to form ordinary bubbles and microbubbles, which are then mixed with the high-pressure sewage jet introduced from the sewage tank (200); (II) After the sewage mixed with aeration bubbles is sucked into the pressurizing chamber (302) by the suction force generated by the rotation of the stirring paddle (43), the sewage is blocked by the floating cover (50) and continuously accumulated in the pressurizing chamber (302) until the internal pressure of the sewage can push the floating cover (50) to float upward for a certain distance, and then the sewage continuously flows into the top chamber (303) and continues to flow upward; during this period, the ordinary bubbles generated by aeration can be crushed and divided into a plurality of microbubbles in the process of increasing the internal pressure of the sewage, and the microbubbles generated by aeration are coupled with ozone in the process of rising with the sewage, and the pollutants in the sewage are removed by the hydroxyl radicals and ozone generated in the process of bubble rupture.

8. A method for treating sewage using the structure for treating sewage using ozone efficiently as claimed in claim 6, wherein the method comprises the following steps: (I) mixing the ozone-mixed gas discharged from the ozone generator (100) and part of the sewage introduced from the sewage pool (200) into a gas-water mixed liquid in a gas-liquid mixing pump (500), pressurizing the mixed liquid and sending it into the mixing chamber (301) of the ozone reaction tank (300) for aeration to form ordinary bubbles and microbubbles, and then mixing them with the high-pressure sewage jet directly introduced from the sewage pool (200) into the mixing chamber (301); (II) After the sewage mixed with aeration bubbles is sucked into the pressurizing chamber (302) by the suction force generated by the rotation of the stirring paddle (43), the sewage is blocked by the floating cover (50) and continuously accumulated in the pressurizing chamber (302) until the internal pressure of the sewage can push the floating cover (50) to float upward for a certain distance, and then the sewage continuously flows into the top chamber (303) and continues to flow upward; during this period, the ordinary bubbles generated by aeration can be crushed and divided into a plurality of microbubbles in the process of increasing the internal pressure of the sewage, and the microbubbles generated by aeration are coupled with ozone in the process of rising with the sewage, and the pollutants in the sewage are removed by the hydroxyl radicals and ozone generated in the process of bubble rupture.

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