A spiral high-efficiency ozone reactor

Abstract

The utility model discloses a spiral high -efficient ozone reactor belongs to water treatment technical field, including spiral reactor main part, water inlet pump, inlet tube, cavitation jet device, jet pump, total outlet tube, gas -water separator, ozone generator, tail gas breaker, the water inlet pump is installed on the inlet tube, the water inlet pump is connected with the water inlet of spiral reactor main part through the inlet tube, the spiral reactor main part is by a plurality of circular tubes and is connected in proper order and is formed multilayer structure through the arc elbow, be provided with cavitation jet device on the spiral reactor main part, the inlet tube of cavitation jet device is connected with the export of jet pump, and the import of jet pump is connected with the water outlet of gas -water separation device bottom, the gas inlet pipeline of cavitation jet device is connected with one end of ozone pipeline. Can realize the efficient removal of smell material in drinking water, refractory organic matter, strictly control bromate generation amount, reduce operating energy consumption, adapt the scale treatment demand of tap water.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, specifically relating to a spiral high-efficiency ozone reactor. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] Drinking water safety is a core issue in the field of public health. With the increasing pollution of water sources and the growing health needs of the public, the traditional "coagulation-sedimentation-filtration-disinfection" process is no longer sufficient to deal with problems such as trace pollutants and persistent odors. Ozone oxidation technology has become one of the core technologies for advanced drinking water treatment because it does not require the addition of chemical agents, has high sterilization efficiency, and can effectively decompose algal toxins. However, drinking water treatment scenarios place special requirements on ozone reactors: they need to achieve efficient removal at low pollutant concentrations, while strictly controlling the ozone dosage to avoid excessive generation of byproducts such as bromate, and they need to be compatible with the continuous and stable operation of water plants.

[0004] Currently used ozone reactors have significant shortcomings in drinking water treatment: (1) Insufficient mass transfer efficiency and incomplete removal of trace pollutants: The height of traditional tank reactors is between 6-8 m. In the case of low concentration pollution in drinking water, the gas-liquid contact time is only 8-10 min, the ozone utilization rate is ≤65%, and the removal efficiency of trace pollutants is low. (2) Low dosing accuracy and high risk of byproducts: The single-stage aeration method cannot dynamically adjust the dosing point according to the fluctuation of water quality in the source water, which is prone to problems such as "local ozone excess" (bromate generation exceeds the limit of 0.01 mg / L) or "local ozone deficiency" (odor removal does not meet the standard). (3) Poor adaptability: Existing reactors occupy a large area and have high energy consumption, which increases the operating cost of water plants. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a spiral high-efficiency ozone reactor, which can efficiently remove odor substances and recalcitrant organic matter from drinking water, strictly control bromate formation, reduce operating energy consumption, and meet the needs of large-scale tap water treatment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A spiral high-efficiency ozone reactor includes a spiral reactor body, an inlet pump, an inlet pipe, a cavitation jet injector, a jet pump, a main outlet pipe, a gas-liquid separator, an ozone generator, and an exhaust gas destroyer. The water inlet pump is installed on the water inlet pipe, and the water inlet pump is connected to the water inlet of the spiral reactor body through the water inlet pipe. The spiral reactor body is composed of multiple sets of circular pipes connected end to end in an arc-shaped bend to form a multi-layer structure. A cavitation jet is installed on the spiral reactor body. The water inlet pipe of the cavitation jet is connected to the outlet of the jet pump, and the inlet of the jet pump is connected to the water outlet at the bottom of the gas-water separator. The air inlet pipe of the cavitation jet is connected to one end of the ozone pipe, and the water inlet of the gas-water separator is connected to the water outlet of the spiral reactor body. An exhaust port is installed on the gas-water separator, and the exhaust port is connected to the exhaust gas destroyer.

[0007] As a further technical solution, the inlet of the exhaust gas breaker is connected to the exhaust port of the water inlet pipe and the exhaust port of the water outlet pipe of the spiral reactor body, and the inlet of the exhaust gas breaker is also connected to the exhaust port of the gas-water separator.

[0008] As a further technical solution, the jet pump is installed on the jet pipe, and one end of the jet pump is connected to the outlet of the gas-water separator through the jet pipe; the inlet of the jet pump is connected to the bottom of the gas-water separator.

[0009] As a further technical solution, the other end of the jet pump is connected to the inlet pipe of the cavitation jet generator through a jet pipe.

[0010] As a further technical solution, each layer of the spiral reactor body is equipped with a cavitation jet.

[0011] As a further technical solution, a cavitation jet valve is provided at the end of the cavitation jet, and the cavitation jet valve is connected to the cavitation jet.

[0012] As a further technical solution, each layer of the cavitation jet is provided with an ozone injection port, and the valve of the cavitation jet is installed at the ozone injection port.

[0013] As a further technical solution, the other end of the ozone pipe is connected to an ozone generator.

[0014] As a further technical solution, a main water outlet pipe is provided at one end of the gas-water separation device, and the main water outlet pipe is connected to the gas-water separation device.

[0015] As a further technical solution, a reactor support and a reactor base are provided at the lower end of the spiral reactor body. One end of the reactor support is fixedly connected to the spiral reactor body, and the other end of the reactor support is fixedly connected to the reactor base.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are: This invention delivers the water to be treated to the inlet pipe via an inlet pump, and then guides it through the inlet pipe into the spiral reactor body fixed on the reactor support and base. This body is composed of multiple sets of circular pipes connected end-to-end via arc-shaped bends, forming a multi-layered structure. This spiral structure creates a compact and dense flow channel, resulting in high-intensity spiral turbulence within the reactor. As the water flows through the spiral flow channel, ozone generated by the ozone generator is delivered via an ozone pipe to the ozone injection port of the cavitation jet injector. The cavitation jet injector then thoroughly mixes the ozone with the water before injecting it into the spiral flow channel. This mixing process breaks down the liquid film boundary layer on the surface of the ozone bubbles, preventing the formation of dead water zones in traditional reactors and allowing the ozone bubbles to disperse evenly in the water, increasing the gas-liquid contact frequency and contact area.

[0017] Meanwhile, the spiral structure extends the residence time of water in the reactor. Unreacted ozone enters the gas-liquid separator along with the water flow. After gas-liquid separation, the exhaust gas is discharged from the exhaust port at the top of the gas-liquid separator and transported to the exhaust gas destroyer for treatment. The separated water can be returned to the main body of the spiral reactor for further treatment through the jet pump and jet pipe, further ensuring the full reaction of ozone with trace pollutants, thereby solving the problem of insufficient mass transfer efficiency and achieving the complete removal of trace pollutants. This invention features a spiral reactor with cavitation jets installed on each layer. Each cavitation jet is equipped with a valve and connected to an ozone generator via an ozone pipeline. The ozone generated by the ozone generator is then transported to the ozone dosing ports of each cavitation jet via the ozone pipeline. In actual operation, ozone can be added in multiple stages by adjusting the number and position of the cavitation jet valves according to changes in the pollutant concentration in the water supplied by the inlet pipe. This disperses the ozone across different layers of the spiral reactor. This multi-stage dispersion method avoids the localized ozone over- or under-aeration issues caused by traditional single-stage aeration, ensuring uniform ozone distribution in the water. Simultaneously, unreacted ozone flows with the water into a gas-liquid separator, where it is separated and discharged through the exhaust port to the tail gas destroyer for treatment. This prevents excess ozone from accumulating within the system, ensuring the required amount of ozone for pollutant removal while avoiding the generation of byproducts such as bromate due to localized ozone over-absorption, effectively reducing the risk of byproducts. In addition, the inlet pump can stably control the water flow in the inlet pipe, and further coordinate with the adjustment of ozone dosing precision to ensure the stability of the entire treatment process. The main body of this spiral reactor is fixed on the reactor support and reactor base. Different diameter circular pipes can be selected to assemble the spiral structure according to actual treatment needs. Combined with the inlet pump to adjust the water flow rate in the inlet pipe, it meets the treatment requirements of water plants of different sizes and has good scalability. At the same time, compared with traditional tank-type reactors, the spiral structure significantly reduces the footprint for the same treatment capacity. The modular design of the reactor support and reactor base also facilitates the installation and disassembly of the equipment, reducing the space occupation cost of the water plant. Furthermore, some of the water separated by the gas-liquid separator can be returned to the main body of the spiral reactor through a jet pump and jet pipe, forming a circulation system. This circulation process, combined with the optimized water flow state of the spiral flow channel, reduces the flow resistance within the equipment and reduces the operating energy consumption of the inlet pump and jet pump. Finally, the treated water is discharged through the main outlet pipe. The entire system has a compact structure and flexible connection methods for each component, allowing the installation position to be adjusted according to the existing site conditions of the water plant, further improving the overall adaptability of the equipment. Attached Figure Description The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of the spiral high-efficiency ozone reactor of this utility model; Figure 2 This is a top view of the spiral high-efficiency ozone reactor of this utility model; In the diagram: 1. Inlet pump; 2. Inlet pipe; 3. Spiral reactor body; 4. Gas-liquid separator; 5. Jet pump; 6. Jet pipe; 7. Ozone generator; 8. Ozone pipe; 9. Main outlet pipe; 10. Cavitation jet injector; 11. Ozone injection port; 12. Cavitation jet injector valve; 13. Exhaust port; 14. Exhaust gas destroyer; 15. Reactor base; 16. Reactor support. Detailed Implementation

[0019] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0020] Currently used ozone reactors have significant shortcomings in drinking water treatment: (1) Insufficient mass transfer efficiency and incomplete removal of trace pollutants: The height of traditional tank reactors is between 6-8 m. In the case of low concentration pollution in drinking water, the gas-liquid contact time is only 8-10 min, the ozone utilization rate is ≤65%, and the removal efficiency of trace pollutants is low; (2) Low dosing precision and high risk of by-products: The single-stage aeration method cannot dynamically adjust the dosing point according to the fluctuation of water source quality, which is prone to problems such as "local ozone excess" (bromate generation exceeds the limit of 0.01 mg / L) or "local ozone deficiency" (odor removal does not meet the standard); (3) Poor adaptability: Existing reactors occupy a large area and have high operating energy consumption, which increases the operating cost of water plants.

[0021] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a spiral-type high-efficiency ozone reactor, such as... Figure 1 and Figure 2 As shown, it includes a spiral reactor body 3, an inlet pump 1, an inlet pipe 2, a cavitation jet generator 10, a jet pump 5, a main outlet pipe 9, a gas-water separator 4, an ozone generator 7, and an exhaust gas destroyer 14. The water inlet pump 1 is installed on the water inlet pipe 2. The water inlet pump 1 is connected to the water inlet of the spiral reactor body 3 through the water inlet pipe 2. The spiral reactor body 3 is a multi-layer structure formed by connecting multiple sets of circular pipes end to end through arc bends. A cavitation jet 10 is installed on the spiral reactor body 3. The water inlet pipe of the cavitation jet 10 is connected to the outlet of the jet pump 5. The inlet of the jet pump 5 is connected to the outlet at the bottom of the gas-water separator 4. The air inlet pipe of the cavitation jet 10 is connected to one end of the ozone pipe 8. The water inlet of the gas-water separator 4 is connected to the outlet of the spiral reactor body 3. An exhaust port 13 is installed on the gas-water separator 4. The exhaust port 13 is connected to the exhaust gas destroyer 14.

[0022] The water to be treated is pumped to the inlet pipe 2 by the inlet pump 1, and then introduced into the spiral reactor body 3, which is fixed on the reactor support 16 and the reactor base 15. The body is composed of multiple sets of circular pipes connected end to end by arc bends to form a multi-layer structure. This spiral structure creates a compact and dense flow channel, causing the water to form a high-intensity spiral disturbance within the reactor. As the water flows through the spiral flow channel, ozone generated by the ozone generator 7 is transported to the ozone injection port 11 of the cavitation jet 10 via the ozone pipe 8. The cavitation jet 10 then fully mixes the ozone with the water and injects it into the spiral flow channel. During the mixing process, the liquid film boundary layer on the surface of the ozone bubbles is broken, avoiding the occurrence of dead water zones in traditional reactors, allowing the ozone bubbles to disperse evenly in the water, and increasing the gas-liquid contact frequency and contact area.

[0023] Meanwhile, the spiral structure extends the residence time of water in the reactor. Unreacted ozone enters the gas-water separator 4 with the water flow. After gas-water separation, the exhaust gas is discharged from the exhaust port 13 at the top of the gas-water separator 4 and transported to the exhaust gas destroyer 14 for treatment. The separated water can be returned to the spiral reactor body 3 for further treatment through the jet pump 5 and jet pipe 6, further ensuring the full reaction of ozone and trace pollutants, thereby solving the problem of insufficient mass transfer efficiency and achieving the complete removal of trace pollutants.

[0024] Each layer of the spiral reactor body 3 is equipped with a cavitation jet injector 10, and each cavitation jet injector 10 is equipped with a cavitation jet injector valve 12. The cavitation jet injector 10 is connected to the ozone generator 7 through an ozone pipe 8. The ozone generated by the ozone generator 7 can be transported through the ozone pipe 8 to the ozone injection port 11 of each layer of cavitation jet injector 10. In actual operation, ozone can be added in multiple stages by adjusting the number and position of the cavitation jet injector valves 12 according to the changes in the pollutant concentration in the water body transported by the inlet pipe 2, thus dispersing the ozone to different layers of the spiral reactor body 3. This multi-stage decentralized dosing method avoids the localized ozone over- or under-dosing issues that occur with traditional single-stage aeration, ensuring a uniform ozone distribution in the water. Simultaneously, unreacted ozone flows with the water into the gas-liquid separator 4, where it is separated and discharged through the exhaust port 13 to the exhaust gas destroyer 14 for treatment. This prevents excess ozone from accumulating within the system, ensuring the required amount of ozone for pollutant removal while avoiding the generation of byproducts such as bromate due to localized ozone over-dosing, effectively reducing the risk of byproducts. Furthermore, the inlet pump 1 stably controls the water flow rate through the inlet pipe 2, further coordinating with the adjustment of ozone dosing precision to ensure the stability of the entire treatment process.

[0025] The spiral reactor body 3 is fixed on the reactor support 16 and reactor base 15. Different diameter circular pipes can be selected to assemble the spiral structure according to actual treatment needs. Combined with the adjustment of the water flow rate through the inlet pump 1, it meets the treatment requirements of water plants of different sizes, demonstrating excellent scalability. Furthermore, compared to traditional tank-type reactors, the spiral structure significantly reduces the floor space required for the same treatment capacity. The modular design of the reactor support 16 and reactor base 15 also facilitates equipment installation and disassembly, reducing the space occupation cost of the water plant. In addition, a portion of the water separated by the gas-liquid separator 4 can be returned to the spiral reactor body 3 via the jet pump 5 and jet pipe 6, forming a circulation system. This circulation process, combined with the optimized water flow state of the spiral flow channel, reduces the flow resistance within the equipment and reduces the operating energy consumption of the inlet pump 1 and jet pump 5. Finally, the treated water is discharged through the main outlet pipe 9. The entire system has a compact structure and flexible connection methods for each component, allowing for adjustments to the installation position based on the existing site conditions of the water plant, further enhancing the overall adaptability of the equipment.

[0026] 1. Main body of the spiral reactor 3 Material and corrosion protection: The main pipe is made of 316L stainless steel or 2205 duplex stainless steel, and the inner wall is polished (roughness Ra≤0.8μm) to avoid the adsorption of pollutants; Pipe diameter: The diameter should be selected based on the actual water volume to be treated. When the water volume is ≤500m³ / h, the appropriate pipe diameter should be selected to ensure a water flow velocity of 0.6-0.9m / s; when the water volume is 500-1000m³ / h, the appropriate pipe diameter should be selected to maintain a water flow velocity of 0.7-1.0m / s; when the water volume is >1000m³ / h, the appropriate pipe diameter should be selected to ensure a water flow velocity of 0.8-1.1m / s, taking into account both mass transfer efficiency and energy consumption, and avoiding excessively high flow velocities that could lead to pipe wear or excessively low flow velocities that could promote the growth of microorganisms. Spiral structure: height set at 6-9m, circular diameter 1.5-3.0m (height to diameter ratio 2-4:1), total flow channel length 25-40m, water residence time 30-45min (for trace pollutants at the ng / L level, the extended contact time ensures full reaction, and the residence time is increased by 2-3 times compared to traditional tank reactors of the same height). Interlayer spacing: 12-18cm (adjusted according to pipe diameter and height; the smaller the pipe diameter and the higher the height, the smaller the interlayer spacing should be to ensure the continuity and uniformity of the spiral flow channel and avoid excessive water flow disturbance that could cause pipe vibration). 2. Cavitation jet 10 Structural optimization: Adopting a venturi precision structure, the jet velocity is 12-18m / s, and the cavitation bubble diameter is 20-40μm; Precise control: Each jet injector is equipped with an electromagnetic flow meter and a proportional control valve, and multi-stage dosing is achieved through a PLC system. The dosing logic is as follows: When 2-MIB ≤ 50 ng / L, turn on the bottom jet injector (2-stage dosing), and the ozone dosage is 0.8-1.2 mg / L; When 50 ng / L < 2-MIB ≤ 100 ng / L, turn on the lower jet injector (4-stage dosing), and the ozone dosage is 1.2-2.0 mg / L; When 100ng / L < 2-MIB ≤ 300ng / L, turn on the middle and lower jet injector (6-stage dosing), and the ozone dosage is 2.0-4.0mg / L; When 300ng / L < 2-MIB ≤ 1000ng / L, turn on the middle and lower jet injectors (8-10 stages of dosing), and the ozone dosage is 4.0-8.0mg / L; 3. Circulating-Gas-Water Separation System Internal circulation optimization: Jet pump 5 with a head of 15-22m (adapted to reactor height of 6-9m; the higher the height, the higher the head should be to ensure the jet effect).

[0027] Gas-water separation system: Water from the spiral reactor 3 enters the gas-water separation system 4. Part of the separated water is used as water intake for the jet pump 5, while the gas enters the ozone exhaust gas destroyer 14 for treatment before being discharged.

[0028] This invention addresses the core needs of efficient removal of trace pollutants (especially 2-methylisoborneol, or 2-MIB) in drinking water treatment, precise utilization of ozone, and stable system operation. Based on three major technical logics—spiral flow field enhanced mass transfer, multi-stage jet precise pollutant control, and synergistic efficiency enhancement—it constructs a highly efficient ozone oxidation system. Its core technical mechanism is as follows: I. Flow field-mass transfer synergistic mechanism of spiral reactor body 3 The spiral reactor body 3, serving as the core carrier for the reaction of ozone with water, achieves a synergistic effect of "low-resistance flow field + high mass transfer efficiency" through material optimization, flow velocity adaptation, and spiral structure design, laying the foundation for the removal of trace pollutants. 1. Mechanism for mass transfer efficiency optimization based on flow rate adaptation The pipe diameter is matched according to the treatment capacity (flow velocity 0.6-0.9 m / s when the treatment capacity is ≤500 m³ / h, 0.7-1.0 m / s when the treatment capacity is 500-1000 m³ / h, and 0.8-1.1 m / s when the treatment capacity is >1000 m³ / h). The design of this flow velocity range has a triple function: To avoid inefficient mass transfer: When the flow rate is below 0.6 m / s, the water body is not disturbed enough, and ozone bubbles are easy to deposit and aggregate in the pipe (bubble diameter ≥ 50 μm), which leads to a reduction in the gas-liquid contact area and the mass transfer coefficient KLa drops to below 0.6 min-1, making it difficult to remove 2-MIB at the μg / L level; To prevent energy waste: When the flow velocity is higher than 1.1 m / s, the frictional resistance between the water flow and the pipe wall increases significantly, the energy consumption per unit of water treatment increases by more than 20%, and it is easy to cause pipe vibration, which affects the stability of the system. Adaptable to different water volumes: The segmented flow rate design ensures that the treated water volume can maintain a stable turbulent state (Reynolds number Re=3000-6000) within the range of 100-5000m³ / h (covering the needs of small, medium and large water treatment plants), breaking the liquid film boundary layer on the surface of ozone bubbles (liquid film thickness ≤15μm), and keeping KLa stably at 0.9-1.2min⁻¹, providing a mass transfer basis for the full oxidation of trace pollutants such as 2-MIB.

[0029] 2. Residence time-perturbation strengthening mechanism of helical structures The spiral structure (height 6-9m, circular diameter 1.5-3.0m, total flow channel length 25-40m) achieves two core advantages through a "spatial folding" design: Increased residence time: Compared to traditional tank reactors of the same height (6-9m) (where the channel length is only equal to the tank height and the residence time is 8-15min), the spiral channel length reaches 25-40m, extending the water residence time to 30-45min. The reaction kinetics of 2-MIB and ozone show that the complete oxidation of this pollutant requires an effective contact time of 15-20min. The residence time design of the spiral structure can ensure that even when water quality fluctuates (such as a short-term increase in 2-MIB concentration), the reaction can still be fully achieved. Three-dimensional spiral disturbance: When water flows inside the spiral pipe, it forms a three-dimensional flow field of "axial propulsion + radial rotation" under the action of centrifugal force, with a rotation speed of 0.3-0.5 r / s. This disturbance can avoid the formation of "dead water zone" in traditional reactors, and at the same time make ozone bubbles uniformly dispersed in the water (bubble distribution uniformity ≥90%), which greatly improves the gas-liquid contact frequency. Especially for 2-MIB at the μg / L level, it can effectively solve the problem of "incomplete removal caused by insufficient local ozone concentration".

[0030] In addition, the 12-18cm interlayer spacing design (appropriately reduced as the pipe diameter decreases and the height increases) can ensure that there is no water flow interference between adjacent spiral layers, avoid flow field turbulence caused by too small interlayer spacing, or space waste caused by too large interlayer spacing, and further optimize the stability and mass transfer efficiency of the spiral flow field.

[0031] II. Multi-stage precision control of the jet injector The dosing logic is based on four levels of 2-MIB concentration, with the core mechanism being "to allocate ozone dosage as needed, avoiding local overdose or underdose": Energy-saving control of low-concentration 2-MIB (≤50ng / L): At this time, only the bottom jet nozzle (2-stage dosing) is turned on, and the ozone dosage is 0.8-1.2mg / L. Bottom dosing can take advantage of the rising process of water flow in the spiral pipe to make ozone fully contact with the water. At the same time, low dosage can avoid excessive ozone reacting with bromide ions in the water to form bromate (when the ozone dosage is ≤1.2mg / L, the bromate formation is ≤0.005mg / L, which is far below the limit of 0.01mg / L in GB5749-2022). Highly efficient balancing of low to medium concentrations of 2-MIB (50-100 ng / L): Activate the lower jet injector (4-stage dosing), with an ozone dosage of 1.2-2.0 mg / L. By increasing the number of dosing stages, the ozone distribution range within the flow channel is expanded, avoiding the problem of "ozone depletion at the front end and no ozone available at the back end" caused by a single dosing point. At the same time, the dosage of 2.0 mg / L remains within the safe bromate formation range (≤0.008 mg / L). Enhanced removal of medium-to-high concentrations of 2-MIB (100-300 ng / L): Activate the middle and lower layer jet injector (6-stage dosing), with an ozone dosage of 2.0-4.0 mg / L. The middle and lower layer dosing utilizes the strong disturbance characteristics of the spiral flow field to rapidly mix high doses of ozone with the water. Simultaneously, through multi-stage dispersed dosing, excessively high local ozone concentrations are avoided (single-stage dosing ≤ 0.8 mg / L), and bromate formation is controlled to ≤ 0.01 mg / L. Deep oxidation with high concentrations of 2-MIB (300-1000 ng / L): The middle and lower jet injectors are activated (8-10 stages of dosing), with an ozone dosage of 4.0-8.0 mg / L. Uniform ozone distribution within the flow channel is achieved through control of the dosing stages, combined with the cavitation effect. This forms "direct ozone oxidation + The synergistic effect of "deep oxidation" ensures a removal rate of ≥99% for high-concentration 2-MIB, while the local ozone concentration is still controlled within 1.0 mg / L due to the dispersion of the dosage, thus avoiding bromate exceeding the standard.

[0032] In summary, through the synergistic effect of "flow field enhanced mass transfer - precise dosing and pollution control", a highly efficient ozone oxidation system adapted to drinking water treatment scenarios is constructed, achieving stable removal of trace pollutants such as 2-MIB, efficient utilization of ozone, and low-energy operation of the system.

[0033] By optimizing the spiral flow field, implementing multi-stage precise dosing and circulation, a highly efficient ozone oxidation system adapted to drinking water treatment scenarios is constructed. This system can specifically address the core pain points of incomplete removal of trace pollutants, ozone waste, excessive byproducts, and high costs. The core beneficial effects are summarized as follows: I. Overall improvement in pollutant removal efficiency, ensuring drinking water safety and sensory quality. This system effectively removes various pollutants from drinking water by utilizing a spiral flow field to extend contact time and a jet effect to enhance oxidation. It not only reliably handles pollutant concentration fluctuations under extreme conditions such as high algae blooms, ensuring that the effluent quality consistently meets the "Standards for Drinking Water Quality" (GB5749-2022), but also completely eliminates sensory issues such as "earthy odor," while simultaneously improving the biological safety of the water body.

[0034] II. Ozone utilization efficiency has been significantly optimized, and the risks of byproducts are strictly controllable. The efficient mass transfer characteristics of the spiral flow field significantly improve ozone utilization and reduce ozone consumption compared to traditional reactors. At the same time, the multi-stage decentralized dosing design avoids excessively high local ozone concentrations and effectively controls the generation of byproducts such as bromate, ensuring that the levels are far below the national standard limits.

[0035] III. Significantly reduced operation and maintenance costs, improving the economic efficiency of water plants. Through optimized flow field design, the power and chemical consumption of the equipment are reduced from the source, resulting in a significant decrease in energy consumption per unit of water treatment compared to traditional equipment. The polished inner wall of 316L stainless steel reduces the adhesion of pollutants, extends the equipment cleaning cycle, and the quick-connect design shortens the operation and maintenance time, reducing labor costs. At the same time, the equipment is highly corrosion resistant, easy to maintain, and has a significantly longer service life than traditional reactors, reducing investment in water plant equipment upgrades and demonstrating outstanding long-term operating cost advantages.

[0036] IV. The system is highly adaptable and can flexibly meet the diverse needs of water plants. It can adapt to different water treatment volumes and flow rates, covering the full range of treatment needs from small to large water plants, without the need for separate custom design; the space-optimized design of the spiral structure greatly reduces the footprint, adapting to the space constraints in water plant renovation scenarios; and it can be seamlessly integrated with existing water plant processes, with a short renovation cycle, avoiding disruption to normal water supply, providing a convenient and efficient technical solution for the construction and upgrading of water plants.

[0037] In summary, by leveraging the combined advantages of "high-efficiency purification, energy saving and consumption reduction, safety and controllability, and flexible adaptation," this solution provides waterworks with a practical and feasible solution for advanced drinking water treatment, comprehensively improving technical levels and economic benefits, and has extremely high application value.

[0038] Raw water is pumped by inlet pump 1 and enters the spiral reactor body 3 through inlet pipe 2. Inlet pump 1 is connected to the inlet of spiral reactor body 3 via inlet pipe 2. Spiral reactor body 3 is composed of multiple sets of circular stainless steel tubes connected end-to-end to form a spiral structure. In one embodiment, the inner diameter of the stainless steel tubes is 32mm, and the material of the circular stainless steel tubes is 316L stainless steel. In another embodiment, the ratio of the height of spiral reactor body 3 to the diameter of the circular stainless steel tubes is 3:1. The height of spiral reactor body 3 is 3m, the diameter of the circular stainless steel tubes is 1m, and the vertical distance between each layer of circular stainless steel tubes in spiral reactor body 3 is preferably 12cm to ensure the continuity and uniformity of the spiral flow channel. The circular stainless steel tubes are connected to adjacent sets of stainless steel tubes through arc-shaped bends to form a continuous spiral structure. In one embodiment, the spiral structure has 21 layers.

[0039] Water enters from the top inlet of the spiral reactor body 3, and ozone is added through the cavitation jet 10. The cavitation jet 10 is installed on the circular stainless steel tubes of each spiral structure to ensure sufficient contact between ozone and water. In one embodiment, valves 12 are installed at the ends of the cavitation jet 10. Valves 12 are opened from bottom to top for four stages of ozone addition. The outlet of the jet pump 5 is connected to the inlet pipe of the cavitation jet 10 to provide sufficient flow velocity for the jet to achieve the cavitation effect. Furthermore, the inlet of the jet pump 5 is connected to the bottom circulation outlet of the gas-water separator 4. In one embodiment, the jet pump 5 is a centrifugal pump, ensuring continuous water circulation within the spiral reactor 3. The ozone generator 7 generates ozone and is connected to the air inlet pipe of the jet pump 10 through the ozone pipe 8. The gas and water are mixed through the jet pump 10 to provide ozone to the reactor. The gas-water separation device 4 is an integrated gas-water separator. Residual ozone is discharged through the exhaust port 13 of the gas-water separator 4 to prevent gas from entering the jet pump 5 and forming cavitation, thus avoiding damage to the equipment. The treated water is then internally circulated and discharged externally.

[0040] The water inlet of the gas-liquid separator 4 is connected to the water outlet pipe of the spiral reactor body 3, and the residual ozone is connected to the tail gas destroyer 14 through the exhaust port 13. The tail gas destroyer 14 is an integrated device, and its inlet is connected to the exhaust port 13 of the water inlet pipe 2 of the spiral reactor body 3, the exhaust port 13 of the water outlet pipe, and the exhaust port 13 of the gas-liquid separator 4. After the reaction is completed, the water is discharged through the main water outlet pipe 9, which is connected to the gas-liquid separator 4.

[0041] The working process is as follows: Slightly polluted raw water (taking a certain surface water as an example, with 2-MIB detected at 130 ng / L and GSM at 50 ng / L) is pumped into the spiral ozone reactor through the raw water inlet. Testing shows that the concentrations of odor-causing substances (2-MIB, GSM) in the effluent are both below 5 ng / L, and bromate was not detected, fully meeting the requirements of the "Standards for Drinking Water Quality" (GB5749-2022).

[0042] The circular stainless steel tubes are made of stainless steel, preferably 316L or 2205 duplex stainless steel. The ratio of the height of the spiral reactor body 3 to the diameter of the circular stainless steel tubes is preferably 2~4:1. The vertical distance between each layer of circular stainless steel tubes in the spiral reactor body 3 is preferably 12~18cm to ensure the continuity and uniformity of the spiral flow channel.

[0043] The inlet of the exhaust gas destroyer 14 is connected to the exhaust port 13 of the water inlet pipe 2 and the exhaust port 13 of the water outlet pipe of the spiral reactor body 3. The inlet of the exhaust gas destroyer 14 is also connected to the exhaust port 13 of the gas-water separator 4.

[0044] Specifically, during the actual assembly and operation of the spiral high-efficiency ozone reactor, the exhaust gas destroyer 14 needs to centrally treat residual ozone from various parts of the system. Specifically, the inlet of the exhaust gas destroyer 14 is connected to two key components: firstly, it connects to the exhaust ports 13 of the inlet and outlet pipes of the spiral reactor body 3, allowing residual ozone escaping from the water in the inlet and outlet pipes to be discharged; secondly, the inlet of the exhaust gas destroyer 14 is also connected to the exhaust port 13 of the gas-liquid separator 4. After separating the gas-liquid mixture flowing out of the spiral reactor body 3, the residual ozone gas generated by the gas-liquid separator 4 is also discharged through this exhaust port 13. Through this connection method, all residual ozone generated within the system can be collected and transported to the exhaust gas destroyer 14. After treatment by the exhaust gas destroyer 14, the direct emission of residual ozone, which could cause environmental impact or safety hazards, is avoided, ensuring that the exhaust gas emissions during the entire reactor operation process meet environmental protection requirements.

[0045] The jet pump 5 is installed on the jet pipe 6, and one end of the jet pump 5 is connected to the outlet of the gas-water separator 4 through the jet pipe 6; the inlet of the jet pump 5 is connected to the bottom of the gas-water separator 4.

[0046] Specifically, the jet pump 5, as a crucial component for water circulation within the reactor, must be installed and connected to meet the system's circulation requirements. During assembly, the jet pump 5 is fixedly mounted on the jet pipe 6, forming a stable fluid delivery channel. One end of the jet pump 5 is connected to the outlet of the gas-water separator 4 via the jet pipe 6, while the inlet of the jet pump 5 is directly connected to the bottom of the gas-water separator 4. After the gas-water separator 4 completes its gas-water separation operation, a portion of the separated water flows into the jet pipe 6 through its outlet and is then transported to the jet pump 5. The design of the jet pump 5's inlet connecting to the bottom of the gas-water separator 4 further ensures that the water within the gas-water separator 4 can fully enter the jet pump 5, providing a continuous and stable water source for the jet pump 5 to transport the water to subsequent structures, thus achieving water circulation within the reactor.

[0047] The other end of the jet pump 5 is connected to the inlet pipe of the cavitation jet injector 10 via the jet pipe 6. Each layer of the spiral reactor body 3 is equipped with a cavitation jet injector 10.

[0048] Specifically, the other end of the jet pump 5 is connected to the inlet pipe of the cavitation jet generator 10 via the jet pipe 6. The jet pump 5 pressurizes the water delivered from the gas-liquid separator 4 and sends it into the inlet pipe of the cavitation jet generator 10 through the jet pipe 6, providing the cavitation jet generator 10 with a water flow that meets its working requirements. The cavitation jet generators 10 are distributed along the multi-layered structure of the spiral reactor body 3, with one cavitation jet generator 10 installed in each layer. This ensures that the water in each layer of the spiral flow channel can come into contact with the ozone delivered by the cavitation jet generator 10, guaranteeing that the ozone is evenly dispersed in the water of each layer of the spiral reactor body 3, improving the gas-liquid mixing efficiency, and creating favorable conditions for the subsequent reaction between ozone and pollutants.

[0049] A cavitation ejector valve 12 is provided at the end of the cavitation ejector 10, and the cavitation ejector valve 12 is connected to the cavitation ejector 10. Each layer of the cavitation ejector 10 is provided with an ozone injection port 11, and the cavitation ejector valve 12 is installed at the ozone injection port 11.

[0050] Specifically, the ozone output of the cavitation jet 10 can be adjusted by controlling the opening and closing of the cavitation jet valve 12. Simultaneously, each layer of the cavitation jet 10 is equipped with an ozone injection port 11, and the cavitation jet valve 12 is correspondingly installed at the ozone injection port 11. This design allows operators to control the ozone injection at the corresponding ozone injection port 11 by adjusting the opening state of the valves 12 of different cavitation jet layers according to changes in the concentration of pollutants in the water, thus achieving precise ozone injection at different levels of the water body and avoiding the problem of localized excessive or insufficient ozone.

[0051] The other end of the ozone pipe 8 is connected to the ozone generator 7.

[0052] Specifically, once the ozone generator 7 starts and produces ozone, the ozone is directly transported through the ozone pipe 8 to the air inlet pipe of the cavitation jet injector 10. The cavitation jet injector 10 then mixes the ozone with the water, allowing the ozone to smoothly enter the flow channel of the spiral reactor body 3. This direct connection method reduces ozone leakage and loss during the transportation process, ensuring that the ozone can be efficiently delivered to the required location and guaranteeing the smooth progress of the ozone oxidation reaction.

[0053] One end of the gas-water separator 4 is provided with a main water outlet pipe 9, which is connected to the gas-water separator 4.

[0054] Specifically, a main outlet pipe 9 is installed at one end of the gas-liquid separator 4, and the main outlet pipe 9 is fixedly connected to the corresponding interface of the gas-liquid separator 4 to ensure the sealing performance between the two and prevent water leakage. After the gas-liquid separator 4 completes gas-liquid separation, the treated water that meets the standards will be collected through the internal flow channel of the gas-liquid separator 4 to the interface connected to the main outlet pipe 9, and then transported through the main outlet pipe 9 to the water storage facility or subsequent treatment system outside the reactor, realizing the orderly discharge of the treated water and completing the effluent stage of the entire water treatment process.

[0055] The lower end of the spiral reactor body 3 is provided with a reactor support 16 and a reactor base 15. One end of the reactor support 16 is fixedly connected to the spiral reactor body 3, and the other end of the reactor support 16 is fixedly connected to the reactor base 15.

[0056] Specifically, one end of the reactor support 16 is fixedly connected to the outer wall of the spiral reactor body 3 using bolts or other connectors to ensure a tight connection and prevent relative displacement between the spiral reactor body 3 and the reactor support 16 during operation. Simultaneously, the other end of the reactor support 16 is fixedly connected to the reactor base 15, which is placed on a flat surface or foundation platform, providing stable support for the entire support and the spiral reactor body 3. This structural design, where the reactor base 15 and reactor support 16 jointly support the spiral reactor body 3, effectively distributes the weight of the spiral reactor body 3, preventing it from tilting or being damaged due to its own weight or the impact of water flow during operation, thus ensuring the structural stability and operational safety of the entire reactor.

[0057] Working principle of spiral high-efficiency ozone reactor First, after the water to be treated enters the system, it is transported to the spiral reactor body 3 through the inlet pipe 2. At the same time, the inlet pump 1 provides power for the water flow, ensuring that the water stably enters the multi-layer spiral flow channel of the spiral reactor body 3. During this process, residual ozone escaping from the inlet pipe 2 and the outlet pipe of the spiral reactor body 3 will be discharged through their respective exhaust ports 13, preparing for subsequent exhaust gas treatment.

[0058] Next, after the ozone generator 7 is started, the generated ozone is transported through the ozone pipe 8 to the air inlet pipe of the cavitation jet 10. At the same time, the gas-water separator 4 transports the pre-treated water to the jet pipe 6, and the jet pump 5 pressurizes the water in the jet pipe 6 before sending the pressurized water into the water inlet pipe of the cavitation jet 10. At this time, the cavitation jet 10 thoroughly mixes the ozone with the pressurized water to form a gas-water mixture. The operator can control the ozone dosage of the cavitation jet 10 at different levels by adjusting the cavitation jet valve 12 at the end of the cavitation jet 10, which corresponds to the ozone injection port 11 installed at each layer, so that the gas-water mixture is evenly injected into the spiral flow channels of each layer of the spiral reactor body 3.

[0059] Subsequently, the gas-water mixture flows within the spiral channel of the spiral reactor body 3. The spiral structure prolongs the water residence time and further agitates the gas-water mixture, allowing ozone to fully contact and oxidize trace pollutants in the water, thus removing the pollutants. The reacted gas-water mixture flows into the gas-water separator 4, where it separates unreacted residual ozone from the treated water.

[0060] After separation, residual ozone is discharged through the exhaust port 13 of the gas-liquid separator 4, and together with the residual ozone discharged from the exhaust port 13 of the inlet pipe 2 and outlet pipe, it enters the exhaust gas destroyer 14. After being treated by the exhaust gas destroyer 14, the residual ozone is prevented from being directly emitted, thus avoiding safety hazards or environmental impacts. The treated water is divided into two parts. One part flows into the jet pipe 6 through the outlet of the gas-liquid separator 4, and is then transported again to the cavitation jet generator 10 by the jet pump 5, realizing the circulation treatment of the water within the system and further improving the pollutant removal effect. The other part is transported to the water storage facility or subsequent treatment system outside the reactor through the main outlet pipe 9 connected to one end of the gas-liquid separator 4, completing the entire water treatment process.

[0061] Throughout the process, the spiral reactor body 3 is fixedly supported by the reactor support 16 and the reactor base 15 to ensure the structural stability during operation. The coordinated cooperation of each structure not only achieves efficient utilization of ozone and full removal of pollutants, but also ensures the safety and continuity of system operation.

[0062] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A spiral-type high-efficiency ozone reactor, characterized in that, It includes the main body of the spiral reactor, the inlet pump, the inlet pipe, the cavitation jet, the jet pump, the main outlet pipe, the gas-liquid separator, the ozone generator, and the exhaust gas destroyer; The water inlet pump is installed on the water inlet pipe, and the water inlet pump is connected to the water inlet of the spiral reactor body through the water inlet pipe. The spiral reactor body is composed of multiple sets of circular pipes connected end to end in an arc-shaped bend to form a multi-layer structure. A cavitation jet is installed on the spiral reactor body. The water inlet pipe of the cavitation jet is connected to the outlet of the jet pump, and the inlet of the jet pump is connected to the water outlet at the bottom of the gas-water separator. The air inlet pipe of the cavitation jet is connected to one end of the ozone pipe, and the water inlet of the gas-water separator is connected to the water outlet of the spiral reactor body. An exhaust port is installed on the gas-water separator, and the exhaust port is connected to the exhaust gas destroyer.

2. The spiral-type high-efficiency ozone reactor as described in claim 1, characterized in that, The inlet of the exhaust gas destroyer is connected to the exhaust port of the water inlet pipe and the exhaust port of the water outlet pipe of the spiral reactor body. The inlet of the exhaust gas destroyer is also connected to the exhaust port of the gas-water separator.

3. The spiral high-efficiency ozone reactor as described in claim 1, characterized in that, The jet pump is installed on the jet pipe, and one end of the jet pump is connected to the outlet of the gas-water separator through the jet pipe; the inlet of the jet pump is connected to the bottom of the gas-water separator.

4. A spiral-type high-efficiency ozone reactor as described in claim 3, characterized in that, The other end of the jet pump is connected to the inlet pipe of the cavitation jet generator via a jet pipe.

5. A spiral-type high-efficiency ozone reactor as described in claim 1, characterized in that, Each layer of the spiral reactor body is equipped with a cavitation jet.

6. A spiral-type high-efficiency ozone reactor as described in claim 5, characterized in that, A cavitation jet valve is provided at the end of the cavitation jet, and the cavitation jet valve is connected to the cavitation jet.

7. A spiral-type high-efficiency ozone reactor as described in claim 6, characterized in that, Each layer of the cavitation jet is equipped with an ozone injection port, and the valve of the cavitation jet is installed at the ozone injection port.

8. A spiral-type high-efficiency ozone reactor as described in claim 1, characterized in that, The other end of the ozone pipe is connected to the ozone generator.

9. A spiral-type high-efficiency ozone reactor as described in claim 1, characterized in that, One end of the gas-water separator is provided with a main water outlet pipe, which is connected to the gas-water separator.

10. A spiral-type high-efficiency ozone reactor as described in claim 1, characterized in that, The lower end of the spiral reactor body is provided with a reactor support and a reactor base. One end of the reactor support is fixedly connected to the spiral reactor body, and the other end of the reactor support is fixedly connected to the reactor base.

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