A high-concentration refractory organic waste gas efficient treatment device

Abstract

The present application belongs to the field of efficient treatment of organic waste gas, and discloses a kind of high concentration of refractory organic waste gas efficient treatment device, the present application device adopts the process combination mode of ozone catalytic oxidation+ozone decomposition oxygen+biological treatment, overcomes the defect of low organic matter concentration, low organic matter degradation efficiency and poor treatment effect of single biological treatment mode. At the same time, it also improves the defects of high energy consumption, strong selectivity to organic matter and harmfulness of residual ozone to atmospheric environment of single ozone oxidation. The ozone treated by the device is all converted into oxygen, and the emission gas indicators can meet the requirements of national standard specifications, especially suitable for industrial organic waste gas treatment with large gas volume and high concentration. The present application has no selectivity to organic matter, high treatment efficiency and stable treatment effect.

Description

Technical Field

[0001] This invention belongs to the field of high-efficiency treatment technology of organic waste gas, and particularly relates to a high-efficiency treatment device for high-concentration, recalcitrant organic waste gas. Background Technology

[0002] Currently, with the development and progress of society and the economy, people are paying increasing attention to their health and the importance attached to atmospheric environmental protection. The types of organic waste gases are constantly increasing, and most of these gaseous organic compounds are toxic to the human body, such as benzene compounds, polycyclic aromatic hydrocarbons, formaldehyde, thiols, amides, indole, and organic acids. The complex gaseous composition increases the difficulty of treating organic waste gases. While single organic waste gas treatment technologies can achieve good results, their limited application methods and practical conditions hinder the continuous improvement of treatment effectiveness. Therefore, it is necessary to combine multiple organic waste gas treatment technologies to achieve complementary advantages and further enhance the treatment effect.

[0003] Currently, commonly used combined treatment technologies mainly include adsorption + catalytic oxidation, condensation + adsorption, adsorption + photocatalysis, adsorption concentration + combustion, and biological treatment technologies. Adsorption + catalytic oxidation technology primarily uses activated carbon as the adsorbent. Activated carbon has high requirements for pretreatment of organic waste gas, and after adsorption saturation, it needs regeneration. The regeneration process and equipment are complex, energy consumption is high, and waste activated carbon needs to be managed and disposed of as hazardous waste, resulting in high operating costs. Condensation + adsorption technology is suitable for treating small volumes of high-concentration organic waste gas. However, the initial investment cost of treatment equipment is high, the condensation and activated carbon regeneration stages are energy-intensive, and the system equipment is complex, leading to high operating and maintenance costs. Adsorption + photocatalysis technology has low light source utilization, small treatment volume, unstable treatment effect, low purification efficiency, and difficulty in meeting stringent environmental emission standards. Adsorption concentration + combustion technology has complex system equipment, high equipment investment, high operating and maintenance costs, poses safety hazards, and the combustion products can easily recombine into new organic matter after the temperature decreases, thus generating secondary pollution. Biological treatment technology is characterized by simple operation, low operating and maintenance costs, and minimal secondary pollution to the environment. However, it has high requirements for the composition, concentration, temperature, and humidity of complex industrial organic waste gases, and is not suitable for the treatment of high-concentration, recalcitrant, toxic, and harmful waste gases.

[0004] The technical problem to be solved by this invention is to address the shortcomings of the prior art by providing an organic waste gas treatment device that features large processing volume, low energy consumption, strong technical applicability, good economy, and high treatment efficiency, especially suitable for complex and recalcitrant gaseous organic compounds. The waste gas treated by this device meets the requirements of current national waste gas emission standards.

[0005] Based on the above analysis, the problems and shortcomings of the existing technology are as follows:

[0006] (1) The light source utilization rate of adsorption + photocatalysis technology is low, the treatment volume is small, the treatment effect is unstable, the purification efficiency is low, and it is not easy to meet the requirements of stringent environmental emission standards. The adsorption concentration + combustion technology system is complex, has high equipment investment and high operation and maintenance costs, poses safety hazards, and the combustion products are easy to resynthesize into new organic matter after the temperature drops, thus generating secondary pollution.

[0007] (2) Biological treatment technology has the advantages of simple operation, low operation and maintenance cost and little secondary pollution to the environment. However, for industrial organic waste gas with complex components, it has high requirements for waste gas composition, concentration and temperature and humidity, and is not suitable for the treatment of high-concentration, difficult-to-degrade toxic and harmful waste gas. Summary of the Invention

[0008] To address the problems existing in the prior art, this invention provides a high-efficiency treatment device for high-concentration, recalcitrant organic waste gas.

[0009] This invention is achieved as follows: a high-efficiency treatment device for high-concentration, recalcitrant organic waste gas includes:

[0010] Gas inlet, ozone dispersion device, catalytic oxidation module, guide plate, airflow distribution plate, ozone decomposition catalytic mesh, liquid collection tank, biological packing, perforated plate, rotary water distributor, circulating pump, collection pipe, circulation pipe, gas outlet, liquid storage tank, baffle plate, packing support layer, support layer perforated plate;

[0011] The ozone dispersion device consists of several branch pipes vertically inserted into the inlet section of the organic waste gas;

[0012] The branch pipe has equally spaced holes and is connected to a short pipe of 80mm length.

[0013] Furthermore, the catalytic oxidation module is equipped with an ozone catalyst.

[0014] Furthermore, the ozone decomposition catalytic mesh is equipped with ozone catalytic decomposition material.

[0015] Furthermore, the biological packing zone consists of packing material and microorganisms, with the packing material providing an attachment surface for the microorganisms.

[0016] Furthermore, the circulating pump, circulating pipe, and rotating water distributor extract the nutrient solution from the storage tank and spray it evenly onto the packing material in the biological packing area.

[0017] Furthermore, the packing support layer is a high-density polypropylene porous support plate located at the bottom of the biological packing area.

[0018] Furthermore, the collection tank is arranged in a ring around the circumference of the device, and the nutrient solution is returned to the storage tank through a collection pipe.

[0019] Furthermore, the rotating water distributor is installed at the top of the biological filler area, enabling automatic rotating spraying without external power.

[0020] Furthermore, the ozone dispersion device consists of several branch pipes vertically inserted into the cross-section of the organic waste gas inlet;

[0021] The catalytic oxidation module is located after the ozone dispersion device and is used to carry out the catalytic oxidation reaction;

[0022] The biological packing zone is located after the ozone decomposition catalytic network and is used for further treatment of organic matter in the waste gas;

[0023] A rotating water distributor is installed at the top of the biological packing area to evenly spray the nutrient solution onto the packing material.

[0024] Furthermore, the collection tank is located at the bottom of the biological packing area and is used to collect the nutrient solution that flows through the packing.

[0025] Based on the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solution to be protected by this invention are as follows:

[0026] First, regarding the technical problems existing in the above-mentioned prior art, the creative technical effects resulting from solving these problems are described in detail below:

[0027] 1. This device employs a combined process of ozone catalytic oxidation, ozone decomposition for oxygen production, and biological treatment, overcoming the shortcomings of single biological treatment methods, such as low organic matter concentration, low organic matter degradation efficiency, and poor treatment effect. It also improves upon the drawbacks of using ozone oxidation alone, such as high energy consumption, strong selectivity for organic matter, and the harmful effects of residual ozone on the atmospheric environment. After treatment by this device, all ozone is converted into oxygen, and all indicators of the emitted exhaust gas meet national standards and regulations. It is particularly suitable for treating large volumes and high concentrations of industrial organic waste gas. This device has no selectivity for organic matter, high treatment efficiency, and stable, compliant treatment results.

[0028] 2. This device has a high degree of integration, a small footprint, and flexible operation. It can treat both high-concentration, recalcitrant organic waste gas and low-concentration, easily degradable organic waste gas. It is highly adaptable to operating conditions and is simple to operate and maintain.

[0029] 3. The residual ozone in this device is completely converted into oxygen, and the microbial treatment process does not produce secondary pollution. It has significant environmental benefits in terms of gas purification, reducing energy consumption and operating costs, and achieving sustainable development.

[0030] 4. By setting up different types of airflow distribution devices such as guide plates, distributors, and uniform distribution plates inside the device, the gas flow field distribution inside the device is made more uniform, preventing the formation of processing dead zones and short-circuit channels, thus improving the overall processing efficiency of the device.

[0031] 5. After the organic waste gas is treated by the ozone catalytic oxidation module, some unreacted ozone remains in the waste gas. This unreacted ozone can be toxic to the growth of microorganisms and affect the treatment effect of subsequent biological reactions. A two-stage ozone decomposition catalytic network is installed to decompose the residual ozone into non-toxic and harmless oxygen, thus providing favorable conditions for the downstream biological reaction. This eliminates the need for forced aeration in the biological packing area, significantly saving energy consumption. Because ozone decomposes into oxygen, the oxygen concentration is greatly increased, significantly improving the oxygen transfer rate, thereby enhancing the concentration and activity of aerobic microorganisms and ensuring the efficient conduct of the biological reaction.

[0032] 6. When the exhaust gas passes through the biological packing area, it adopts a side-in, top-out type. The nutrient solution that seeps out from the bottom of the packing support layer is collected through the external liquid collection tank of the device, which avoids the ozone decomposition catalyst being washed by the nutrient solution and thus causing the ozone decomposition material to fail.

[0033] The packing support layer adopts a rectangular cross-section high-density polypropylene porous support plate. Compared with the commonly used structure of pebbles and gravel of different particle sizes, this support structure has the advantages of light weight, good seepage effect and no liquid accumulation. Due to its light weight, it greatly saves the engineering cost of the equipment.

[0034] Secondly, the high-concentration, recalcitrant organic waste gas treatment device of the present invention achieves significant technological progress through a series of innovative designs and effectively solves some technical problems existing in the prior art. The following are the significant technological advancements of the present invention and the prior art problems it solves:

[0035] 1. High-efficiency ozone dispersion: The unique design of the ozone dispersion device enables ozone to be dispersed efficiently and uniformly in organic waste gas, thereby enhancing the efficiency of catalytic oxidation reaction.

[0036] 2. Combination of catalytic oxidation and decomposition: The catalytic oxidation module is equipped with an ozone catalyst, which is combined with the ozone catalytic decomposition material on the ozone decomposition catalytic network to achieve effective utilization and catalytic decomposition of ozone, thereby improving the treatment efficiency of organic waste gas.

[0037] 3. Application of biological treatment technology: Introduce a biological packing zone, using the packing to provide a large number of attachment surfaces for microorganisms, and combine the degradation capabilities of microorganisms to achieve the biodegradation of recalcitrant components in organic waste gas.

[0038] 4. Nutrient solution recycling: The nutrient solution in the storage tank is recycled through components such as circulation pumps, circulation pipes and rotating water distributors, which ensures the growth needs of microorganisms in the biological packing area and saves nutrient solution resources.

[0039] Technical problems solved by existing technologies:

[0040] 1. Improved treatment efficiency for recalcitrant organic waste gas: Existing technologies have low efficiency when treating high-concentration recalcitrant organic waste gas. This invention significantly improves treatment efficiency by combining ozone catalytic oxidation and biodegradation technologies.

[0041] 2. Reduced operating costs: Traditional methods for treating organic waste gas often require large amounts of chemical reagents, increasing treatment costs. This invention reduces operating costs through the recycling of nutrient solution and the natural degradation capabilities of biological packing material.

[0042] 3. Improve the stability and reliability of the treatment system: By optimizing the equipment structure and process flow, such as the design of the packing support layer, the long-term stable operation of the system is ensured, and the problems of easy clogging and difficult maintenance in the existing technology are solved.

[0043] 4. Environmental friendliness: The treatment method adopted in this invention reduces the use of chemical reagents and utilizes microbial degradation technology to reduce the impact on the environment, achieving more environmentally friendly treatment of organic waste gas.

[0044] Through technological innovation, this invention not only effectively improves the treatment efficiency and quality of recalcitrant organic waste gas, but also reduces operating costs, enhances system stability, and minimizes environmental impact, providing a new, efficient, economical, and environmentally friendly solution for the field of organic waste gas treatment. Attached Figure Description

[0045] Figure 1 This is a structural diagram of the high-efficiency treatment device for high-concentration, recalcitrant organic waste gas provided in an embodiment of the present invention.

[0046] Figure 2 This is a top view of the high-efficiency treatment device for high-concentration, recalcitrant organic waste gas provided in this embodiment of the invention.

[0047] Figure 3 This is a side view of the high-efficiency treatment device for high-concentration, recalcitrant organic waste gas provided in an embodiment of the present invention.

[0048] Figure 4 This is a structural diagram of the ozone dispersion device provided in an embodiment of the present invention.

[0049] Figure 5 This is a side view of a single module provided in an embodiment of the present invention.

[0050] Figure 6This is a top view of a single module provided in an embodiment of the present invention.

[0051] Figure 7 This is a structural diagram of the airflow distribution plate provided in an embodiment of the present invention.

[0052] Figure 1 In the middle section: 1. Gas inlet; 2. Ozone dispersion device; 3. Catalytic oxidation module; 4. Baffle plate; 5. Airflow distribution plate; 6. Ozone decomposition catalytic mesh; 7. Liquid collection tank; 8. Biological packing material; 9. Perforated plate; 10. Rotary water distributor; 11. Circulation pump; 12. Collection pipe; 13. Circulation pipe; 14. Gas outlet; 15. Liquid storage tank; 16. Baffle plate; 17. Packing material support layer; 18. Perforated plate of support layer. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0054] The detailed connection or location relationships of the high-efficiency treatment device for high-concentration, recalcitrant organic waste gas are described below:

[0055] Gas inlet: The starting point of the waste gas treatment device, used to receive high-concentration, recalcitrant organic waste gas.

[0056] Ozone dispersion device: Located after the gas inlet, it consists of several branch pipes. These branch pipes are vertically inserted into the cross-section of the exhaust gas inlet, and small holes are evenly spaced on the branch pipes to uniformly disperse ozone into the exhaust gas flow. These branch pipes are connected to the ozone supply system through connecting pipes.

[0057] Catalytic oxidation module: Located after the ozone dispersion device, this module is equipped with an ozone catalyst to accelerate the oxidation reaction of organic matter in the exhaust gas.

[0058] Guide vanes and airflow distribution plates: These are installed after the catalytic oxidation module to guide airflow, ensure uniform distribution of exhaust gas within the device, and improve treatment efficiency.

[0059] Ozone decomposition catalytic mesh: Located after the airflow distribution plate, it is used to further decompose the remaining ozone and prevent it from being emitted into the atmosphere.

[0060] Liquid collection tank: Arranged in a ring around the circumference of the device, it is used to collect the liquid generated during the waste gas treatment process.

[0061] Biological packing zone: Located after the ozone decomposition catalytic network, this zone consists of biological packing material and microorganisms. The biological packing material provides an attachment surface for the microorganisms to carry out biodegradation.

[0062] The circulating pump, circulating pipe, and rotating water distributor constitute the nutrient solution circulation system. The circulating pump draws nutrient solution from the storage tank and sprays it evenly onto the biological packing material through the circulating pipe and rotating water distributor, providing the microorganisms with the necessary nutrients and water.

[0063] Collection pipe: Connected to the liquid collection tank, the collected liquid is returned to the storage tank through the collection pipe to realize the recycling of nutrient solution.

[0064] Gas outlet: The treated waste gas is discharged through the gas outlet device, meeting environmental emission standards.

[0065] Storage tank: Used to store nutrient solution, connected to the circulation pump, to provide the necessary nutrients to the biological packing area.

[0066] Baffles: These are installed in certain critical parts of the device to prevent liquid from splashing or flowing back.

[0067] Packing support layer and support layer perforated plate: Located at the bottom of the biological packing zone, these support layers support the biological packing and allow liquid and gas passage. The support layer perforated plate has multiple small holes to ensure smooth flow of gas and liquid.

[0068] These components are arranged in a specific order and position within the device to ensure that the exhaust gas passes through each treatment stage sequentially, achieving efficient treatment results. Simultaneously, the connections between the components should ensure smooth airflow and airtightness to prevent exhaust gas leakage.

[0069] like Figure 1-7 As shown, the present invention provides a high-efficiency treatment device for high-concentration, recalcitrant organic waste gas, comprising:

[0070] 1. Gas inlet; 2. Ozone dispersion device; 3. Catalytic oxidation module; 4. Guide plate; 5. Airflow distribution plate; 6. Ozone decomposition catalytic mesh; 7. Liquid collection tank; 8. Biological packing; 9. Perforated plate; 10. Rotary water distributor; 11. Circulation pump; 12. Collection pipe; 13. Circulation pipe; 14. Gas outlet; 15. Liquid storage tank; 16. Liquid baffle; 17. Packing support layer; 18. Perforated plate of support layer.

[0071] The ozone dispersion device 2 consists of several branch pipes vertically inserted into the organic waste gas inlet section.

[0072] The branch pipe has equally spaced holes and is connected to a short pipe of 80mm length.

[0073] The catalytic oxidation module 3 provided by this invention is equipped with an ozone catalyst.

[0074] The ozone decomposition catalytic mesh 6 provided by this invention is equipped with ozone catalytic decomposition material.

[0075] The biological packing material provided by the present invention consists of packing material and microorganisms in zone 8, with the packing material providing an attachment surface for the microorganisms.

[0076] The circulating pump 11, circulating pipe 13, and rotating water distributor 10 provided by the present invention extract the nutrient solution from the storage tank 15 and spray it evenly onto the packing material in the biological packing material 8 area.

[0077] The packing support layer 17 provided by the present invention is a high-density polypropylene porous support plate, located at the bottom of the biological packing 8 zone.

[0078] The liquid collection tank provided by the present invention is arranged in a ring around the circumference of the device, and the nutrient solution is returned to the storage tank 15 through a collection pipe.

[0079] The rotating water distributor 10 provided by this invention is installed at the top of the biological packing material 8 zone to realize the automatic rotating spraying function without external power.

[0080] The ozone dispersion device 2 provided by the present invention consists of several branch pipes vertically inserted into the inlet section of organic waste gas;

[0081] The catalytic oxidation module 3 is located after the ozone dispersion device 2 and is used to carry out the catalytic oxidation reaction;

[0082] The biological packing material in zone 8 is located after the ozone decomposition catalytic network 6 and is used for further treatment of organic matter in the waste gas;

[0083] The rotating water distributor 10 is located at the top of the biological packing material 8 zone and is used to spray the nutrient solution evenly onto the packing material.

[0084] The liquid collection tank provided by this invention is located at the bottom of zone 8 of the biological packing material and is used to collect the nutrient solution that flows through the packing material.

[0085] The working principle of the device of the present invention is as follows:

[0086] Organic waste gas generated during industrial production is treated by a dust collector and then enters this device. The prepared ozone gas is evenly sprayed into the organic waste gas through the ozone dispersion device 2. The ozone dispersion device 2 consists of several branch pipes vertically inserted into the inlet section of the organic waste gas. The branch pipes have holes at equal intervals and are connected to a short pipe of 80mm in length. Ozone is sprayed out from the evenly distributed short pipes, which can ensure that the ozone is evenly distributed in the inlet section of the organic waste gas and ensure the removal efficiency of the ozone catalytic reaction.

[0087] The organic waste gas mixed with ozone then undergoes a catalytic oxidation reaction in catalytic oxidation module 3. Module 3 is equipped with an ozone catalyst. Under the action of the ozone catalyst, ozone can decompose complex high-molecular-weight organic compounds into carbon dioxide and water, or into simple, low-molecular-weight, easily degradable organic compounds, at room temperature and pressure, thus achieving the decomposition and transformation of gaseous organic matter. Due to its high reactivity and oxidizing power, it can rapidly oxidize gaseous organic matter. For easily degradable organic compounds with simple molecular structures, it can achieve complete decomposition, generating non-toxic and harmless carbon dioxide and water; for complex and difficult-to-degrade organic compounds, it can degrade them into simple, low-molecular-weight organic compounds, improving their biodegradability and facilitating subsequent biological treatment. After the catalytic oxidation reaction, the concentration of organic matter in the organic waste gas is significantly reduced.

[0088] After catalytic oxidation, the organic waste gas enters the airflow distribution plate through a guide plate inside the device, where it undergoes secondary rectification to ensure even distribution across the device's cross-section. The waste gas then enters the ozone decomposition catalytic mesh 6. Because some unreacted ozone remains in the waste gas after treatment by the aforementioned ozone catalytic oxidation module 3, this residual ozone can be toxic to microorganisms, reducing their activity or causing mass death and affecting the effectiveness of subsequent biological reactions. Therefore, a two-stage ozone decomposition catalytic mesh 6 is used to decompose the residual ozone into non-toxic oxygen. The ozone decomposition catalytic mesh 6 is equipped with ozone catalytic decomposition material. At room temperature, ozone enters the nano-active sites on the inner and outer surfaces of the high specific surface area ozone decomposition material and is instantly decomposed into non-toxic oxygen. This process consumes zero energy (excluding fan power consumption) and requires no reagents, resulting in rapid and thorough decomposition. Oxygen is essential for the survival of aerobic microorganisms. After passing through the ozone decomposition catalytic network 6, all residual ozone is decomposed into oxygen, thus providing excellent conditions for the biological reaction. This eliminates the need for forced-air ventilation, significantly saving energy consumption. Furthermore, traditional biological reaction methods use air for ventilation, which has an oxygen concentration of only 21%. However, after passing through the ozone decomposition catalytic network 6, the oxygen concentration is greatly increased, significantly improving the oxygen transfer rate. This, in turn, enhances the concentration and activity of aerobic microorganisms, clearly overcoming the shortcomings of forced-air ventilation.

[0089] After passing through the ozone decomposition catalytic mesh 6, the organic waste gas enters the biological packing zone 8. Following the aforementioned catalytic oxidation reaction, the concentration of organic matter in the waste gas is significantly reduced. The remaining organic matter consists of simple, low-molecular-weight, easily degradable organic compounds formed after degradation. These simple organic compounds meet the concentration and metabolic requirements of microbial reactions. The oxygen-rich environment enhances the metabolic reaction rate of microorganisms, enabling them to quickly adapt to changing organic loads and rapidly metabolize organic matter, resulting in high treatment efficiency. The biological packing zone 8 consists of packing material and microorganisms. The packing material has a large specific surface area and is lightweight, and can be polypropylene spherical packing. The packing material provides an attachment surface for microorganisms, allowing a large number of microorganisms to adhere to the surface and form a biofilm. The biofilm degrades the organic matter in the passing waste gas, ultimately leading to complete metabolism of the organic matter by the microorganisms, producing non-toxic and harmless carbon dioxide and water. This process does not produce secondary pollution and exhibits good energy-saving and environmental protection effects.

[0090] During microbial growth, nutrient solution needs to be replenished regularly. The substances in the nutrient solution, such as nitrogen sources, phosphorus sources, trace elements, and water, can meet the nutritional needs of microbial growth and provide the water required for microbial metabolism. The nutrient solution is prepared externally to the device and then piped into the storage tank 15. A circulation pump 11, circulation pipe 13, and rotating water distributor 10 extract the nutrient solution from the storage tank 15 and spray it evenly onto the packing material in the biological packing zone 8. Under gravity, the nutrient solution flows through the packing material and enters the collection tank through the perforated plate of the packing support layer 17 at the bottom side wall of the biological packing zone 8. The packing support layer 17 is a high-density polypropylene porous support plate. The collection tank is arranged in a ring around the circumference of the device. A collection pipe returns the nutrient solution to the storage tank 15, achieving nutrient solution recycling. A rotating water distributor 10 is installed at the top of the biological packing zone 8, utilizing its own hydraulic conditions to achieve automatic rotating spraying without external power, continuously and evenly distributing water within the circumference of the biological packing zone 8.

[0091] After being treated in Zone 8 of the biological packing, the concentration of organic matter in the exhaust gas meets the emission standards and flows out from the top of the device.

[0092] Ozone has a standard oxidation-reduction potential of 2.07V and is widely used for the oxidation of organic matter. However, the reaction between ozone and organic matter is selective, resulting in low oxidation efficiency. To overcome this selective reaction, the novel ozone catalyst used in the catalytic oxidation module 3 of this device can increase the generation of hydroxyl radicals by up to 300%, significantly enhancing the oxidation capacity of ozone. Hydroxyl radicals have a higher oxidation-reduction potential (2.80V) and exhibit non-selective reaction with organic matter, resulting in a faster reaction rate and more efficient removal of organic matter from wastewater.

[0093] This patented device can efficiently treat high-concentration, recalcitrant organic waste gas, with a total organic matter removal efficiency greater than 98% (ozone catalytic oxidation module 3 achieves a removal efficiency of over 90%, and biological packing zone 8 achieves a removal efficiency of over 80%). The device's operation mode can be adjusted according to the actual organic waste gas generation, offering flexibility. When the organic matter concentration in the waste gas is low or the organic matter molecular structure is simple and easily degradable, the device can treat the waste gas without introducing ozone, using only the subsequent biological packing zone 8, further reducing operating costs and improving economic efficiency. The biological packing zone 8 allows for the selection of appropriate bacterial strains and nutrient solutions based on the concentration and type of organic waste gas to achieve optimal treatment results.

[0094] The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas provided by this invention mainly operates based on the principles of catalytic oxidation and biodegradation.

[0095] First, high-concentration organic waste gas enters the device through gas inlet 1. Under the action of ozone dispersion device 2, ozone is evenly dispersed into the waste gas, where it undergoes a preliminary oxidation reaction with the organic matter in the waste gas.

[0096] Next, the exhaust gas enters the catalytic oxidation module 3. The ozone catalyst installed on this module can accelerate the oxidation and decomposition process of organic matter in the exhaust gas, converting it into low-toxicity or non-toxic substances.

[0097] The exhaust gas treated by catalytic oxidation then passes through the guide plate 4 and the airflow distribution plate 5, so that the airflow is evenly distributed in the device to improve the efficiency of subsequent treatment.

[0098] Afterwards, the exhaust gas passes through the ozone decomposition catalytic mesh 6, where the ozone catalytic decomposition material can further decompose the remaining ozone, preventing it from causing secondary pollution to the environment.

[0099] Next, the exhaust gas enters zone 8 of the biological packing material. This zone consists of packing material and microorganisms. The microorganisms attach to the surface of the packing material and further decompose the organic matter in the exhaust gas through biodegradation.

[0100] In order to maintain the microbial activity in the biological packing zone 8, the circulation pump 11 extracts the nutrient solution from the storage tank 15 through the circulation pipe 13 and the rotating water distributor 10, and sprays it evenly onto the biological packing to provide the microorganisms with the necessary nutrients and water.

[0101] The liquid components in the exhaust gas are collected by the liquid collection tank 7 when passing through the device, and returned to the liquid storage tank 15 through the collection pipe 12, so as to realize the recycling of nutrient solution.

[0102] Finally, the exhaust gas, after undergoing multiple treatments, is discharged through gas outlet 14, meeting emission standards. Specific implementation examples:

[0104] In practical applications, this device can be installed in factories or industrial facilities that generate high concentrations of recalcitrant organic waste gas. Before starting the device, an appropriate amount of nutrient solution needs to be added to the storage tank 15, and the circulation pump 11 needs to be started to ensure that the microorganisms in the biological packing zone 8 receive sufficient nutrition.

[0105] As waste gas is continuously input, the device begins to operate continuously. The ozone dispersion unit 2, the catalytic oxidation module 3, and the ozone decomposition catalytic network 6 work synergistically to efficiently oxidize and decompose the organic matter in the waste gas. Simultaneously, microorganisms in the biological packing zone 8 are also carrying out biodegradation, further improving treatment efficiency.

[0106] During operation, the nutrient solution level in the storage tank 15 needs to be checked regularly and replenished or replaced as needed. Simultaneously, the emission quality of the exhaust gas at the gas outlet 14 must be monitored to ensure it meets emission standards.

[0107] This device effectively purifies high-concentration, recalcitrant organic waste gas, reducing environmental pollution and saving enterprises treatment costs, achieving a win-win situation for both economic and environmental benefits.

[0108] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency treatment device for high-concentration, recalcitrant organic waste gas, characterized in that, include: Gas inlet, used to receive organic waste gas to be treated; An ozone dispersion device, located after the gas inlet, is used to evenly disperse ozone into the exhaust gas. The catalytic oxidation module, equipped with an ozone catalyst, is used to catalytically oxidize organic matter in waste gas; The biological packing zone contains biological packing materials and microorganisms, used for the biodegradation of organic matter in waste gas; The nutrient solution circulation system, including a circulation pump, circulation pipe and a rotary water distributor, is used to evenly spray the nutrient solution in the storage tank onto the biological packing material. Gas outlet, used to discharge treated waste gas; The ozone dispersion device consists of several branch pipes vertically inserted into the exhaust gas inlet section, with small holes evenly spaced on the branch pipes and connected to the ozone supply system; the bottom of the biological packing area is provided with a packing support layer and a perforated plate for the support layer to support the biological packing and allow gas and liquid to pass through. It also includes a guide plate and an airflow distribution plate, which are set after the catalytic oxidation module to guide the airflow and ensure that the exhaust gas is evenly distributed in the device; The ozone decomposition catalytic mesh, located after the airflow distribution plate, is used to decompose the remaining ozone. The liquid collection tank is arranged in a ring around the circumference of the device to collect the liquid generated during the treatment process and return the liquid to the storage tank through the collection pipe to realize the recycling of nutrient solution. A baffle plate is installed in certain key parts of the device to prevent liquid from splashing or flowing back.

2. The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas as described in claim 1, characterized in that, The branch pipe has equally spaced holes and is connected to a short pipe of 80mm length; The catalytic oxidation module is equipped with an ozone catalyst.

3. The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas as described in claim 1, characterized in that, The ozone decomposition catalytic mesh is equipped with ozone catalytic decomposition material; the biological packing zone consists of packing material and microorganisms, with the packing material providing an attachment surface for the microorganisms.

4. The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas as described in claim 1, characterized in that, The circulating pump, circulating pipe, and rotating water distributor extract the nutrient solution from the storage tank and spray it evenly onto the packing material in the biological packing area.

5. The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas as described in claim 1, characterized in that, The packing support layer is a high-density polypropylene porous support plate, located at the bottom of the biological packing area.

6. The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas as described in claim 1, characterized in that, The collection tank is arranged in a ring around the circumference of the device, and the nutrient solution is returned to the storage tank through a collection pipe.

7. The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas as described in claim 1, characterized in that, The rotating water distributor is located at the top of the biological filler area, enabling automatic rotating spraying without external power.

8. The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas as described in claim 1, characterized in that, The ozone dispersion device consists of several branch pipes vertically inserted into the inlet section of the organic waste gas; The catalytic oxidation module is located after the ozone dispersion device and is used to carry out the catalytic oxidation reaction; The biological packing zone is located after the ozone decomposition catalytic network and is used for further treatment of organic matter in the waste gas; A rotating water distributor is installed at the top of the biological packing area to evenly spray the nutrient solution onto the packing material.

9. The high-efficiency treatment device for high-concentration, recalcitrant organic waste gas as described in claim 1, characterized in that, The collection tank is located at the bottom of the biological packing area and is used to collect the nutrient solution that flows through the packing.

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