Integrated modularized malodorous gas treatment device

Abstract

The invention discloses an integrated modular malodorous gas treatment device, and belongs to the technical field of environmental engineering. Comprising a gas inlet module, a pretreatment module, a physical adsorption module, a chemical absorption module and a biodegradation module which are respectively provided with an inlet and an outlet, and a control system communicated with each module, the gas inlet module, the pretreatment module and the physical adsorption module are sequentially communicated; the chemical absorption module is optional and is communicated behind the physical absorption module; and the biodegradation module is optional and is communicated behind the physical adsorption module or the chemical absorption module. According to the invention, each module has independent capability and can be flexibly configured and combined according to specific processing requirements and site conditions; by combining the three technologies of physical adsorption, chemical absorption and biodegradation, the malodorous gas discharged in industry and life is efficiently purified and treated, the configuration is flexible according to treatment requirements, and the treatment efficiency and effect of the malodorous gas are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of environmental engineering, and in particular to an integrated modular malodorous gas treatment device. Background Art

[0002] With the acceleration of industrialization and the improvement of urbanization, the odor problem caused by industrial production and urban life has become increasingly serious, causing significant negative impacts on human living environment and health. Although traditional odor gas treatment technologies, such as chemical washing, activated carbon adsorption, and biological filters, can reduce odor pollution to a certain extent, they usually have problems such as low treatment efficiency, high equipment investment and operating costs, large land occupation, and complex maintenance. In addition, due to the complex and changeable composition of odorous gases from different sources, a single treatment technology is often difficult to meet the needs of efficient treatment.

[0003] In addition, existing malodorous gas treatment devices are usually designed as large fixed equipment; this not only increases the difficulty of installation and maintenance, but also greatly reduces the adaptability and flexibility of the equipment; especially in situations where rapid deployment is required or space constraints are faced, the limitations of existing technologies are more obvious. For example, the patent with application number "2017107196416" discloses a device for automatically treating odor-polluted gas, including: a working controller, an air intake fan, a primary treatment tower, a secondary treatment tower, and a tertiary treatment tower. The air intake fan is connected to the primary treatment tower, the primary treatment tower is connected to the secondary treatment tower, and the secondary treatment tower is connected to the tertiary treatment tower. When the present invention is working, the collection port will collect the surrounding gas, collect the collected gas into the collection plate, and then the component detection plate will monitor and analyze the gas. After the computer information processing plate determines that the gas is odor-polluted gas, the execution plate controls the fan actuator, the primary actuator, the secondary actuator, the oxidation actuator and the reduction actuator to work, and the odor-polluted gas is first sucked into the air duct through the air intake fan, and then the treated gas is purified through the primary treatment tower, the secondary treatment tower, and the tertiary treatment tower.

[0004] The above-mentioned public technologies and conventional equipment on the market are all large-scale fixed equipment; they are high in cost, inconvenient to maintain, and have relatively low processing efficiency. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art that malodorous gas treatment equipment is large in size, inconvenient to maintain, high in treatment cost and low in efficiency, and to propose an integrated modular malodorous gas treatment device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: An integrated modular malodorous gas treatment device, comprising an air intake module, a pretreatment module, a physical adsorption module, a chemical absorption module, a biodegradation module, each of which is provided with an inlet and outlet, and a control system communicating with each module; The air intake module, the pretreatment module, and the physical adsorption module are connected in sequence; The chemical absorption module is an optional configuration and is connected after the physical adsorption module; The biodegradation module is an optional configuration and is connected after the physical adsorption module or the chemical absorption module.

[0007] In some embodiments, the air intake module includes: an air intake pipe, a uniform cavity; The air inlet pipe is provided with a primary filter assembly, which is a coarse particle filter screen and is made of a stainless steel woven screen; The air inlet pipe is also provided with an air flow regulating component; it is an adjustable air valve installed after the primary filter component to accurately control the gas flow and pressure according to real-time processing requirements; An induced draft fan is also provided in the air inlet pipe; The uniform distribution chamber is provided with an air flow uniform distribution component and a pressure equalization chamber; The airflow distribution component is a multi-layer guide plate, which is arranged at the inlet end of the distribution chamber; a pressure equalization chamber is arranged behind the airflow distribution component to make the gas reach a stable pressure and velocity distribution.

[0008] In some embodiments, the air intake module is further provided with: a monitoring component; The monitoring components include: a gas composition monitor, a temperature and humidity sensor; The gas composition monitor is installed in the air inlet pipe to detect the concentration of major pollutants and provide data support for the control system; the temperature and humidity sensor monitors the temperature and humidity of the gas.

[0009] In some embodiments, the pre-processing module includes: a pre-processing housing, and a multi-stage filtering assembly disposed inside the pre-processing housing; The multi-stage filtration assembly comprises: Primary coarse filter layer: non-woven fabric material is used to remove large particles; Secondary medium-efficiency filtration layer: melt-blown polypropylene filter material is used to remove medium-sized particles; Three-stage fine filtration layer: uses high-efficiency particulate air filter to filter out tiny particles.

[0010] In some embodiments, the pre-processing module is designed according to the flow rate to ensure that the filtration wind speed is between 0.5 and 1.5 m / s.

[0011] In some embodiments, the physical adsorption module includes: a physical adsorption shell, and a multi-layer adsorption bed disposed therein; The adsorption bed layer adopts porous activated carbon with high specific surface area; Porous activated carbon is activated carbon with acidic or alkaline surface modification; Porous activated carbon is mixed with activated alumina.

[0012] In some embodiments, a pressure difference sensor is installed at the front and rear ends of the adsorption bed to monitor the pressure difference between the front and rear ends of the adsorption bed in real time to determine the resistance change and saturation of the adsorption material; when it is close to saturation or an abnormal situation occurs, it is prompted that the adsorption material needs to be regenerated or replaced; The physical adsorption module is also provided with an online regeneration system; the service life of the adsorption material is extended by hot air regeneration.

[0013] In some embodiments, the chemical absorption module is a horizontal spray absorption tower structure provided with multiple layers of fillers; The horizontal spray absorption tower structure is provided with a spray system and an absorption liquid system; The spray system comprises: a spray pipe and a spray pump; The absorption liquid system comprises: an absorption liquid storage tank and a pH value control component; The pH value control component includes an online pH value monitor and an automatic dosing device to adjust the pH value of the absorption liquid in real time; The gas outlet of the chemical absorption module is also provided with a demister to remove entrained liquid droplets.

[0014] In some embodiments, the biodegradation module includes: a bioreactor shell, and a multilayer biofilm reactor disposed therein; The packing layer of the biofilm reactor uses biological packing with a high specific surface area; the packing layer is multi-layered and staggered to increase the contact time and area between gas and microorganisms; The biodegradation module is also provided with: a nutrient solution circulation system; The nutrient solution circulation system comprises: a spray pipe, a nutrient solution storage tank, and a circulation pump; A spray pipe and a nozzle are installed on the top of the packing layer to evenly spray the nutrient solution on the surface of the packing to maintain the growth environment of the microorganisms; the nutrient solution storage tank stores and supplies the nutrients required by the microorganisms; the circulation pump transports the nutrient solution from the nutrient solution storage tank to the spray pipe to form a cycle.

[0015] In some embodiments, the biodegradation module is further provided with: an internal environment control component; The internal environment control components include: a pH sensor and a dosing device, which monitor and adjust the pH value of the nutrient solution to a suitable range for microorganisms in real time; The biodegradation module is also provided with: a gas exhaust component; The gas exhaust component includes: a demister and an air outlet pipe; the demister is arranged at the air outlet position of the biodegradation module to remove water droplets carried in the gas; the clean gas after passing through the demister is discharged into the atmosphere through the air outlet pipe.

[0016] Compared with the prior art, the present invention provides an integrated modular malodorous gas treatment device having the following beneficial effects.

[0017] 1. In the present invention, each module has independent capabilities and can be flexibly configured and combined according to specific processing requirements and site conditions.

[0018] 2. In the present invention, the air intake module intercepts large particles and impurities to reduce wear on subsequent equipment; it has a self-cleaning function to maintain filtering efficiency; it accurately adjusts the gas flow rate and pressure to ensure processing efficiency and avoid impact on subsequent modules; and it ensures the uniformity of gas velocity through the pressure equalization chamber.

[0019] 3. In the present invention, the pretreatment module has advanced multi-stage filtration technology, which not only effectively improves the filtration efficiency, but also provides a purer gas environment for the subsequent physical adsorption, chemical absorption and biodegradation modules, significantly improving the overall treatment effect.

[0020] 4. In the present invention, the physical adsorption module adopts porous activated carbon with high specific surface area to provide sufficient adsorption sites, taking into account both adsorption efficiency and gas resistance; mixed activated alumina is used to enhance the adsorption of polar pollutants such as aldehydes and ketones; the optimal gas residence time is calculated based on the adsorption isotherm and kinetic characteristics; the adsorption material is monitored and judged in real time, and the regeneration or replacement of the adsorption material is prompted.

[0021] 5. In the present invention, the chemical absorption module sprays the absorption liquid evenly from the top of the tower, and the liquid flows downward to the bottom of the tower for collection; the gas-liquid contact area is increased to improve the absorption efficiency, and the multi-layer high-efficiency filler enhances the gas-liquid contact efficiency; the horizontal spray absorption tower has a modular structure design, and the tower length can be flexibly adjusted according to the needs, which is convenient for transportation and installation and meets the needs of different processing volumes.

[0022] 6. In the present invention, the biodegradation module adopts biological fillers with high specific surface area, which effectively increases the contact time and area between microorganisms and malodorous gases and improves the degradation efficiency; the internal environmental control component monitors and adjusts the pH value of the nutrient solution in real time to a suitable range for microorganisms.

[0023] 7. The present invention combines the three technologies of physical adsorption, chemical absorption and biodegradation to efficiently purify the malodorous gases discharged from industry and life. It can be flexibly configured according to the treatment requirements, which significantly improves the treatment efficiency and effect of the malodorous gases.

[0024] Other advantages, objectives and features of the present invention will be described in part in the following description; and in part, will be apparent to those skilled in the art based on an examination of the following; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of the air intake module.

[0026] Figure 2 This is a schematic diagram of the structure of the preprocessing module.

[0027] Figure 3 Schematic diagram of the structure of the physical adsorption module.

[0028] Figure 4 Schematic diagram of the structure of the chemical absorption module.

[0029] Figure 5 Schematic diagram of the structure of the biodegradable module.

[0030] Figure 6 It is a flow chart of the present invention.

[0031] In the figure: 11. Air inlet pipe; 12. Uniform distribution chamber; 13. Conical guide cover; 14. Primary filter assembly; 15. Air flow adjustment assembly; 16. induced draft fan; 121. Air flow uniform distribution assembly; 122. Pressure equalization chamber; 21. Primary coarse filtration layer; 22. Secondary medium efficiency filtration layer; 23. Third level fine filtration layer; 24. Condenser; 31. Adsorption bed; 32. Flow equalizing plate; 33. Support grid; 34. Air flow uniformizer; 41. Absorption liquid storage tank; 51. Biofilm reactor; 52. Nutrient solution storage tank; 53. Air outlet pipe; 6. Self-cleaning mechanism; 7. Pressure difference sensor; 8. Defogger. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figures 1 to 6 The integrated modular malodorous gas treatment device includes an air intake module with inlets and outlets respectively, a pretreatment module, a physical adsorption module, a chemical absorption module, a biodegradation module, and a control system communicating with each module; accordingly, each module has independent capabilities and can be flexibly configured and combined according to specific treatment requirements and site conditions.

[0034] in: The air intake module, the pretreatment module, and the physical adsorption module are connected in sequence; The chemical absorption module is an optional device and is connected after the physical adsorption module; The biodegradation module is an optional configuration and is connected after the physical adsorption module or the chemical absorption module.

[0035] That is, at least the following four module combinations can be formed: 1) Air intake module + pretreatment module + physical adsorption module; 2) Air intake module + pretreatment module + physical adsorption module + chemical absorption module; 3) Air intake module + pretreatment module + physical adsorption module + biodegradation module; 4) Air intake module + pretreatment module + physical adsorption module + chemical absorption module + biodegradation module.

[0036] The air inlet module adopts efficient airflow dynamics design to ensure that the malodorous gas is evenly distributed and fully pre-treated before entering the treatment device; Specifically, the air intake module includes: an air intake pipe 11 and a uniformly distributed cavity 12 .

[0037] A conical guide cover 13 is installed at the air inlet of the air inlet pipe 11, so that the external malodorous gas can be guided and the turbulence can be reduced when entering, so that the gas can enter the interior evenly.

[0038] At the same time, a rainproof and dustproof component is provided at the air inlet; specifically, in order to adapt to the outdoor environment, a rainproof cap and a dustproof net are provided at the air inlet to prevent rainwater and large particles from entering and protect internal components.

[0039] It is understandable that the dustproof net can be set at the front end or rear end of the conical air guide cover; for example, it can be sleeved on the front end of the conical air guide cover and pressed and installed at the connection position between the conical air guide cover and the air inlet pipe 11.

[0040] A primary filter assembly 14 is disposed in the air inlet pipe 11 .

[0041] The primary filter assembly 14 is a coarse particle filter, which is disposed close to the air inlet in the air inlet pipe 11 .

[0042] Preferably, the coarse particle filter adopts a stainless steel woven mesh with a pore size of 40 to 60 microns; it can effectively intercept large particles and suspended matter, and reduce wear on subsequent fine filtration and equipment.

[0043] Preferably, the coarse particle filter screen is a stainless steel woven screen with a pore size of 50 microns.

[0044] In some embodiments, the primary filter assembly 14 is further provided with a self-cleaning mechanism 6 .

[0045] The self-cleaning mechanism 6 is a back-blowing device or a vibrator; the back-blowing effect of the airflow or mechanical vibration is used to regularly remove the accumulated particles to maintain the filtering efficiency.

[0046] Furthermore, an air flow adjustment component 15 is also provided in the air inlet pipe 11 .

[0047] The airflow regulating component 15 is an adjustable air valve installed after the primary filter component 14; it adopts an electric or pneumatic actuator and can accurately control the gas flow and pressure according to real-time processing requirements.

[0048] At the same time, the airflow regulating component 15 is provided with a high-precision flow sensor; the incoming gas flow data is monitored in real time and fed back to the control system to achieve closed-loop control.

[0049] In some embodiments, an induced draft fan 16 is further disposed in the air inlet pipe 11 .

[0050] The induced draft fan 16 adopts a corrosion-resistant and explosion-proof centrifugal fan to provide stable power and introduce malodorous gases into the treatment device; the induced draft fan 16 with the characteristics of high efficiency, low noise and long life should be selected; at the same time, the induced draft fan 16 is equipped with a frequency conversion controller to automatically adjust the fan speed according to the real-time flow demand to achieve the purpose of energy saving and consumption reduction.

[0051] In some embodiments, an airflow distribution component 121 and a pressure distribution chamber 122 are disposed in the distribution chamber 12 .

[0052] Among them, the air flow distribution component 121 is a multi-layer guide plate, which is arranged at the inlet end of the distribution chamber 12 and arranged at a suitable angle and spacing to eliminate the turbulence of the air flow and ensure the uniformity of the gas velocity on the cross section; a pressure equalization chamber 122 is arranged behind the air flow distribution component 121 to enable the gas to achieve a stable pressure and velocity distribution before entering the pretreatment module.

[0053] In some embodiments, the air intake module is further provided with: a safety protection component.

[0054] Among them, the safety protection components include: explosion-proof membrane, pressure relief valve, and fire damper.

[0055] The explosion-proof membrane and the pressure relief valve are installed on the pressure equalizing chamber 122; when the internal pressure rises abnormally, the pressure is released quickly to prevent equipment damage and safety accidents; the fire damper is installed in the air inlet pipe 11; it automatically closes in the event of fire or high temperature to prevent flames and high-temperature gases from entering the device.

[0056] In some embodiments, the air intake module is further provided with: a monitoring component.

[0057] The monitoring component includes: a gas composition online monitor and a temperature and humidity sensor.

[0058] Among them, the gas composition monitor is installed in the air inlet pipe 11; the concentration of major pollutants in the malodorous gas (such as hydrogen sulfide, ammonia, volatile organic compounds, etc.) is detected in real time to provide data support for the control system; the temperature and humidity sensor is installed in the air inlet pipe 11 to monitor the temperature and humidity of the gas to ensure that the system operates under the best working conditions.

[0059] It should be noted that material selection and anti-corrosion design are also required.

[0060] All parts of the air intake module are made of corrosion-resistant materials, such as 316L stainless steel, PVC, PP or PTFE, to resist the corrosive components in the malodorous gas; each connection part of the air intake module is connected with corrosion-resistant sealing rings and flanges to prevent gas leakage and ensure the safety and sealing of the system.

[0061] For example, flanges are provided at the front and rear ends of the air inlet pipe 11 to assemble the conical air guide cover and the uniformly distributed cavity 12 .

[0062] It can be understood that the air intake module is connected to the control system in communication to achieve overall unified control.

[0063] Specifically, the air intake device communicates with the control system to achieve unified control and data processing of the adjustable air valve, the induced draft fan 16, and the monitoring components; it can be understood that the control system is equipped with a PLC and an industrial computer, and provides a human-machine interface; by setting up a friendly human-machine interface, the operator can view the system status, adjust parameters, view alarm information, etc. in real time.

[0064] When using: The conical air guide cover and rain and dustproof components installed at the air inlet guide the airflow and effectively prevent rainwater and large particles from entering the interior; the stainless steel woven mesh of the primary filter component 14 intercepts large particles and impurities, reduces the wear on subsequent equipment, and has a self-cleaning function to maintain the filtration efficiency; after filtration, the gas flows through the adjustable air valve, and the flow sensor monitors the gas flow in real time. The control system accurately adjusts the gas flow rate and pressure according to the processing requirements to ensure the processing efficiency and avoid impact on subsequent modules; after that, the gas pressurized by the induced draft fan 16 passes through the airflow distribution component 121 and the pressure equalization chamber 122 to eliminate airflow turbulence and ensure the uniformity of the gas velocity on the cross section.

[0065] The gas processed by the air inlet module enters the pre-processing module.

[0066] The pre-treatment module adopts advanced multi-stage filtering technology; it includes: a pre-treatment shell, and a multi-stage filtering component arranged inside the shell.

[0067] The pretreatment shell is a closed shell (with an inlet and outlet) made of corrosion-resistant materials (such as corrosion-resistant glass fiber reinforced plastics (FRP) or polypropylene (PP), etc.), and the internal space is designed as a graded filtration channel, with good air tightness and structural strength; The multi-stage filtration components include: Primary coarse filter layer 21: Made of non-woven fabric material, it removes large particles and suspended matter.

[0068] Secondary medium-efficiency filtration layer 22: uses melt-blown polypropylene (PP) filter material to remove medium-sized particles.

[0069] Three-stage fine filtration layer 23: High efficiency particulate air filter (HEPA) is used to filter out tiny particles.

[0070] in: The nonwoven material is required to be moisture-resistant and corrosion-resistant, with a thickness of 5~10mm; The fiber diameter of melt-blown polypropylene filter material is 1~5 microns, and the filtration efficiency is ≥85%; The HEPA filter uses glass fiber or PTFE membrane with a filtration efficiency of ≥99.97%.

[0071] Furthermore, the multi-stage filter assembly is also provided with: a self-cleaning mechanism 6 and a pressure difference monitoring device.

[0072] The self-cleaning mechanism 6 is a vibrator or a back-blowing device installed between each filter layer; the back-blowing effect of the airflow or mechanical vibration is used to regularly remove the accumulated dust and extend the service life of the filter layer.

[0073] The pressure difference monitoring device is: a pressure difference sensor 7 installed before and after each filter layer; it monitors the resistance change in real time and prompts cleaning or replacement of the filter layer.

[0074] In some embodiments, the pre-treatment module is further provided with: a condensation and dehumidification device, a liquid collection tank and a liquid drainage system.

[0075] The condensation and dehumidification device is: a condenser 24 arranged after the multi-stage filter assembly; to reduce the gas temperature, condense and remove part of the moisture and condensable substances.

[0076] The sump collects the liquid produced during the filtration and condensation process and discharges or treats it through the drainage system.

[0077] An inspection door is also provided to facilitate the inspection and replacement of multi-stage filter components and daily maintenance of the equipment.

[0078] It should be noted that the key components and technical parameters of the preprocessing module are as follows: The multi-stage filter components are designed with appropriate size according to the flow rate of the processed gas to ensure that the filtration wind speed is between 0.5 and 1.5 m / s, which not only ensures the filtration efficiency but also reduces the pressure loss. The measurement range of the differential pressure sensor 7 is 0~1000Pa, with an accuracy of ±1%FS; The cooling medium temperature of the condenser 24 is 5~15℃, and the heat exchange area is designed according to the gas flow rate and temperature, generally 10~50 square meters; The vibrator of the self-cleaning mechanism 6 is an electromagnetic or pneumatic vibrator with a vibration frequency of 20 to 50 Hz; The back-blowing device of the self-cleaning mechanism 6 uses compressed air, the back-blowing pressure is 0.2~0.5MPa, and it is started periodically.

[0079] When using: The pre-treatment module adopts advanced multi-stage filtration technology, which includes a primary coarse filtration layer 21, a secondary medium-efficiency filtration layer 22 and a tertiary fine filtration layer 23; the primary coarse filtration layer 21 uses non-woven fabric material with a larger pore size, which is mainly used to intercept large particles and suspended matter, reducing the load on subsequent filtration layers; the secondary medium-efficiency filtration layer 22 uses melt-blown polypropylene PP filter material, which can effectively remove medium-sized particles and some oil mist; the tertiary fine filtration layer 23 uses high-efficiency HEPA filter material with a filtration efficiency of up to 99.97%, which can remove particles of 0.3 microns and above.

[0080] Through the optimized combination of multi-stage filtration, the pretreatment module not only effectively improves the filtration efficiency, but also provides a purer gas environment for subsequent physical adsorption, chemical absorption and biodegradation modules, significantly improving the overall treatment effect.

[0081] The gas treated by the pretreatment module enters the physical adsorption module.

[0082] The physical adsorption module is a key processing unit in the malodorous gas treatment device, which is mainly responsible for removing harmful components such as volatile organic compounds (VOCs), hydrogen sulfide, and ammonia. The core adopts customized porous activated carbon adsorption material with high specific surface area (1000~1500m2 / g), and the particle size is controlled between 4~8 mesh (2.38~4.76mm), taking into account both adsorption efficiency and gas resistance. The activated carbon undergoes acidic or alkaline surface modification to improve the adsorption capacity for specific pollutants such as hydrogen sulfide and ammonia. At the same time, activated alumina is mixed in the activated carbon layer to enhance the adsorption of polar pollutants such as aldehydes and ketones.

[0083] Specific: The physical adsorption module comprises: a physical adsorption shell and a multi-layer adsorption bed layer (31) arranged inside the physical adsorption shell.

[0084] The physical adsorption shell is made of 316L stainless steel or high-strength corrosion-resistant plastic (such as PP, PVC, etc.) to ensure corrosion resistance and structural strength; the size specifications are calculated based on the flow rate and residence time of the treated gas; it is designed as a cylindrical or rectangular structure to facilitate filling of adsorption materials and airflow distribution.

[0085] Preferably, a flow equalizing plate 32 is provided between each layer of the adsorption bed 31, and a support grid 33 is provided in the adsorption bed 31 to ensure that the gas passes through the adsorption material evenly; a packing pressing device is provided in the adsorption bed 31 to prevent the adsorption material from moving or losing under the impact of the airflow, thereby ensuring a stable adsorption effect.

[0086] In some embodiments, the physical adsorption module is further provided with a pressure difference monitoring device.

[0087] Specifically, a pressure difference sensor 7 is installed at the front and rear ends of each adsorption bed 31 to monitor the front and rear pressure difference of the adsorption bed 31 in real time to determine the resistance change and saturation of the adsorption material; when the adsorption material is close to saturation or an abnormal situation occurs, an alarm signal is issued to indicate the need to regenerate or replace the adsorption material.

[0088] In some embodiments, the adsorption bed 31 uses porous activated carbon with a high specific surface area.

[0089] Preferably, the adsorption bed 31 has a specific surface area of ​​1000-1500m 2 / g porous activated carbon provides sufficient adsorption sites. At the same time, the particle size of porous activated carbon is between 4 and 8 meshes (2.38-4.76 mm), taking into account both adsorption efficiency and gas resistance.

[0090] Furthermore, the porous activated carbon is: activated carbon with acidic or alkaline surface modification to enhance the adsorption of polar pollutants, such as aldehydes and ketone compounds.

[0091] Furthermore, activated alumina is mixed in the porous activated carbon to enhance the adsorption of polar pollutants such as aldehydes and ketones.

[0092] In some embodiments, an air flow distributor 34 is provided at the air inlet end of the physical adsorption module.

[0093] The gas flow distributor 34 is in the form of a perforated plate or a guide vane to ensure that the gas is evenly distributed on the cross section of the adsorption bed 31 .

[0094] In addition, it should be noted that the gas flow rate of the physical adsorption module is controlled.

[0095] Specifically, the optimal gas residence time is calculated based on the adsorption isotherm and kinetic characteristics, which is generally 0.5 to 2 seconds.

[0096] In some embodiments, the physical adsorption module is further provided with: an online regeneration system.

[0097] Correspondingly, the online regeneration system prolongs the service life of the adsorption material and reduces the operating cost through hot air regeneration and other means; it should be noted that through the configuration of the regeneration pipeline and valve system of the online regeneration system, it is ensured that the regeneration operation is carried out without affecting the normal operation.

[0098] It is understandable that in order to ensure safe operation, the physical adsorption module adopts an explosion-proof design as a whole; all electrical components meet explosion-proof standards and are reliably electrostatically grounded to prevent static electricity accumulation; high-quality seals are used to ensure the airtightness of the module to prevent leakage of pollutants; and inspection ports are set to facilitate the replacement of adsorption materials and daily maintenance of equipment.

[0099] The gas treated by the physical adsorption module can be directly discharged according to the treatment requirements; or connected to the chemical absorption module or biodegradation module for further treatment.

[0100] The chemical absorption module is a horizontal spray absorption tower structure; the gas enters the tower from the left side, flows horizontally to the right side and is discharged; it efficiently removes specific components in the malodorous gas (such as sulfide, ammonia, etc.); the absorption tower is equipped with multiple layers of high-efficiency fillers, the gas and the absorption liquid are fully contacted through the optimized spray system, the absorption liquid is evenly sprayed from top to bottom, and is recycled through a corrosion-resistant centrifugal pump.

[0101] Specifically, the absorption liquid is evenly sprayed from the top of the tower and flows downward to the bottom of the tower for collection; this design increases the gas-liquid contact area and improves the absorption efficiency; the fillers are pall balls, mesh fillers, etc., made of PP or ceramic, which enhance the gas-liquid contact efficiency, and the two sides of the fillers are fixed by mesh plates.

[0102] At the same time, the absorption liquid system is equipped with an online pH value monitoring and automatic dosing device to ensure that the pH value and concentration of the absorption liquid are always within the optimal range of chemical absorption effect; to ensure safe operation, the tower body is equipped with a variety of monitoring devices such as liquid level sensors, pressure sensors, and safety valves; in addition, it is equipped with a waste liquid collection system, and the treated waste liquid can be safely discharged or recycled in accordance with environmental protection requirements.

[0103] In addition, the horizontal spray absorption tower has a modular structure design and multiple sections. The tower length can be flexibly adjusted according to the processing requirements, which is convenient for transportation and installation and meets the needs of different processing volumes. It uses corrosion-resistant glass fiber reinforced plastics (FRP) or polypropylene (PP) materials to resist the erosion of absorption liquid and corrosive gases, ensuring the durability and reliability of the equipment and extending the life of the equipment. It should be noted that considering the stress characteristics of the horizontal structure, the tower body must meet the strength and rigidity requirements to ensure safe operation.

[0104] The chemical absorption module is provided with a spraying system and an absorption liquid system.

[0105] The spray system includes: spray pipes and spray pumps. Specifically, spray pipes and nozzles are installed on the top of the horizontal spray absorption tower structure, and the absorption liquid is sprayed from top to bottom to cover the packing layer; the spray pump uses a corrosion-resistant centrifugal pump to transport the absorption liquid from the storage tank to the spray system to meet the flow and pressure requirements.

[0106] It should be noted that the spray pipes should be made of corrosion-resistant materials, and the pipes and nozzles should be arranged reasonably to ensure uniform distribution of the absorption liquid.

[0107] The absorption liquid system includes: an absorption liquid storage tank 41 and a pH value control component.

[0108] The capacity of the absorption liquid storage tank 41 is determined according to the circulation volume, and liquid level monitoring and automatic liquid replenishment function components are set; the pH value control component includes: an online pH value monitor and an automatic dosing device to adjust the pH value of the absorption liquid in real time.

[0109] It should be noted that appropriate absorption liquid should be selected according to the composition of the treated gas, such as alkaline solution (NaOH) or acidic solution (H2SO4).

[0110] During operation, the treated gas is discharged from the right side.

[0111] Furthermore, the gas outlet of the chemical absorption module is provided with a demister 8 to remove entrained droplets.

[0112] The gas treated by the chemical absorption module can be directly discharged according to the treatment requirements; or connected to the biodegradation module for further treatment.

[0113] The biodegradation module adopts advanced immobilized microbial technology, combined with high specific surface area biological fillers and multi-layer biofilm reactors 51, which effectively increase the contact time and area between microorganisms and malodorous gases, thereby significantly improving the degradation efficiency; the overall structural design is a vertical cylindrical or rectangular tower, which is divided into multiple processing units inside, and uses a gas distribution system to achieve uniform gas entry and distribution to avoid air flow short circuit or deviation; the filler layout adopts a multi-layer staggered arrangement to enhance the contact between microorganisms and gases.

[0114] At the same time, in order to ensure the persistence of microbial activity, a nutrient solution circulation system is equipped; the required nutrient solution is evenly sprayed on the surface of the filler through the spray system and the circulation pump; and the environmental parameters in the reactor (such as temperature, humidity, pH value, etc.) are adjusted and monitored in real time through the PH adjustment, temperature and humidity control system to ensure that the growth environment of the microorganisms is in the best state; at the same time, a demister 8 is equipped to prevent water droplets from entering subsequent equipment or affecting the environment, ensuring the cleanliness of the exhaust gas.

[0115] At the same time, the maintenance design of the module is also very complete. It is equipped with inspection ports for regular inspection and maintenance. Anti-corrosion measures ensure the long-term use of the equipment in harsh environments. The installation of safety valves effectively prevents accidents caused by excessive internal pressure.

[0116] In addition, through connection with the control system, automatic control and data collection are realized, and various key parameters of the internal environment are monitored in time; an abnormal alarm system is set up to ensure that an alarm is issued in time and corresponding measures are taken when the parameters exceed the set range to ensure safe and stable operation of the equipment.

[0117] Specific: The biodegradation module comprises: a bioreactor shell and a multilayer biofilm reactor 51 arranged inside the bioreactor shell.

[0118] The bioreactor shell is made of corrosion-resistant materials such as fiberglass reinforced plastics (FRP) or polypropylene (PP) to ensure long-term use of the equipment in harsh environments.

[0119] The packing layer of the biofilm reactor 51 uses biological packing with high specific surface area, such as honeycomb ceramic packing, combined packing or elastic packing, to provide a carrier for microorganisms to attach and grow; the packing layer is multi-layered and staggered to increase the contact time and area between gas and microorganisms.

[0120] In addition, the packing layer is provided with a support structure; the support structure is a packing support grid, which prevents the packing from sinking or moving and keeps the internal structure of the reactor stable.

[0121] In addition, the types of microorganisms selected are specific strains with strong adaptability and high degradation ability (such as sulfide oxidizing bacteria, ammonia oxidizing bacteria and organic matter degrading bacteria, etc.); organic pollutants and inorganic matter in malodorous gases are used as carbon sources or energy sources, and converted into carbon dioxide, water and other harmless substances through metabolic activities.

[0122] In some embodiments, the biodegradation module is further provided with: a nutrient solution circulation system.

[0123] The nutrient solution circulation system includes: a spray pipe, a nutrient solution storage tank 52, and a circulation pump.

[0124] A spray pipe and a nozzle are installed on the top of the packing layer to evenly spray the nutrient solution on the surface of the packing to maintain the growth environment of the microorganisms; the nutrient solution storage tank 52 stores and supplies nutrients (such as nitrogen, phosphorus, etc.) required by the microorganisms; and the circulation pump transports the nutrient solution from the nutrient solution storage tank 52 to the spray system to form a cycle.

[0125] In some embodiments, the biodegradation module is further provided with: an internal environment control component.

[0126] Among them, the internal environmental control components include: pH sensor and dosing device, which monitor and adjust the pH value of the nutrient solution to the suitable range for microorganisms (6.5~8.5) in real time.

[0127] It can be understood that the dosing device is arranged corresponding to the nutrient solution storage tank 52, and multiple pH sensors can be arranged in the nutrient solution storage tank 52 and in the packing layer to obtain information at multiple points.

[0128] At the same time, the biodegradation module is also provided with a gas exhaust component.

[0129] Specifically, the gas exhaust assembly includes: a demister 8, an air outlet pipe 53; The demister 8 is arranged at the gas outlet of the biodegradation module to remove water droplets carried in the gas to prevent the subsequent equipment or environment from being affected. The clean gas after passing through the demister 8 is discharged into the atmosphere through the gas outlet pipe 53 .

[0130] In addition, the biodegradable module is also provided with inspection ports; specifically, inspection ports are provided on the side and the top to facilitate regular inspection, maintenance and replacement of fillers.

[0131] The control system is the core of the malodorous gas treatment device, integrating the central control unit, sensor modules, actuators and communication networks, etc. The central control unit (including PLC and industrial computers) is responsible for data processing, automatic control and fault diagnosis, and cooperates with the human-machine interface (HMI) to achieve real-time monitoring and operation; the sensor module collects key data such as flow, pressure, temperature, humidity and gas composition in real time, and the actuator adjusts the operating status of valves, fans, pumps and other equipment according to instructions.

[0132] The control system realizes data transmission between devices through industrial Ethernet and fieldbus, and stores and manages historical data on the database server to ensure data security and system traceability; at the same time, a remote monitoring module is set up to support remote operation through Ethernet, 4G / 5G, etc., which facilitates management and maintenance and enhances the operability and flexibility of the system.

[0133] In addition, the control system has a highly modular design and redundancy mechanism to ensure high reliability and scalability; by optimizing control strategies and energy-saving measures, it can achieve efficient operation in harsh environments, and supports remote access, alarm notifications and security authority management to ensure operational safety and data protection.

[0134] The following describes the workflow of the present invention.

[0135] , Air intake device: Malodorous gases enter from the external environment through the air inlet.

[0136] First, it passes through a rain and dust protection device and a coarse particle filter to remove large particles and impurities; The gas flows through the adjustable air valve, and the flow rate is monitored by the flow sensor; the control system adjusts the air valve opening and fan speed according to the set parameters to ensure that the gas enters the system at an appropriate speed and pressure; The gas pressurized by the fan passes through the guide plate and the pressure equalizing chamber 122 to achieve uniform distribution of the airflow; The safety protection component monitors the system status in real time during the entire process to ensure the safety of equipment and personnel; The gas composition online monitor and temperature and humidity sensor continuously provide gas parameter information, and the control system optimizes the system based on the data; Finally, the gas enters the pretreatment module and subsequent physical adsorption, chemical absorption, and biodegradation modules.

[0137] ), preprocessing module: The malodorous gas pretreated by the air inlet device enters the pretreatment module at a uniform speed.

[0138] Primary coarse filtration: First, it passes through the primary coarse filter layer 21. The nonwoven material has a relatively large pore size (about 10 to 50 microns), which mainly intercepts large particles, dust and impurities, reducing the load on the subsequent filter layers; The filter medium can adopt a folded structure to increase the filter area and reduce the air flow resistance; Secondary medium efficiency filtration: The gas after the primary filtration enters the secondary medium efficiency filtration layer 22; The pore size of melt-blown PP filter material is about 1 to 10 microns, which further removes medium particles and some oil mist; The filter layer adopts modular design, which is easy to replace and clean; Three-level fine filtration: It uses a HEPA filter with a filtration efficiency of 99.97%, which can remove particles of 0.3 microns and above; Ensure the cleanliness of the gas entering the subsequent processing module to avoid affecting the adsorption materials and microorganisms.

[0139] Automatic cleaning and differential pressure monitoring: The self-cleaning mechanism 6 regularly vibrates or back-blows the filter layer to clean it according to the data of the pressure difference monitoring system to prevent the filter layer from being blocked; At the same time, when the pressure difference exceeds the set value, an alarm will be issued to prompt that the filter needs to be replaced.

[0140] Condensation dehumidification: The gas after multi-stage filtration may still contain some water vapor and condensable substances. The gas temperature is reduced to below the dew point through a condensation dehumidification device, so that the water vapor and condensable substances are condensed into droplets.

[0141] The condenser 24 may be a surface heat exchanger using cooling water or refrigerant as a refrigerant.

[0142] Liquid collection and drainage: The condensed liquid and the liquid retained during the filtration process are collected in the sump and discharged regularly through the drainage system; the discharged liquid can be treated or recycled as needed.

[0143] Gas output: The pre-treated clean gas enters the subsequent physical adsorption module from the outlet, providing good gas conditions for subsequent treatment.

[0144] , physical adsorption module: The gas passing through the pretreatment module enters the air inlet end of the physical adsorption module.

[0145] Uniform distribution of air flow: The gas passes through the air flow uniformizer 34 and is evenly distributed on the cross section of the adsorption bed 31 .

[0146] Pollutant adsorption: When the gas passes through the multi-layer adsorption bed 31, pollutants such as volatile organic compounds, hydrogen sulfide, and ammonia are intercepted by the adsorption material.

[0147] Gas discharge: The purified gas is discharged from the gas outlet of the module and enters the subsequent chemical absorption or biodegradation module.

[0148] Online regeneration: Extend the service life of the adsorption material and reduce operating costs through hot air regeneration and other methods.

[0149] , Chemical adsorption module: The gas enters from the air inlet on the left side of the tower body, flows horizontally from left to right in the packing layer, and fully contacts with the absorption liquid sprayed from top to bottom; the harmful components in the gas are absorbed by the absorption liquid, and the purified gas is discharged from the right side.

[0150] Liquid circulation process: The absorption liquid is pumped out from the absorption liquid storage tank 41 by a circulation pump, and is sprayed on the packing layer from top to bottom through a spray pipe and a nozzle; the absorption liquid flows downward in the packing layer, gathers at the bottom of the tower, and then returns to the storage tank for recycling.

[0151] , Biodegradable module: After being processed by the front-end module, it enters the biodegradation module.

[0152] Microbial degradation: Types of microorganisms: Select specific strains with strong adaptability and high degradation ability, such as sulfide oxidizing bacteria, ammonia oxidizing bacteria and organic matter degrading bacteria.

[0153] Degradation process: Microorganisms use organic pollutants and inorganic matter in malodorous gases as carbon sources or energy sources, and convert them into carbon dioxide, water and other harmless substances through metabolic activities.

[0154] Nutrient solution supply: Spray the nutrient solution evenly on the surface of the filler to provide the necessary nutrients and moisture for the microorganisms to maintain their activity; the nutrient solution flows downward through the filler layer to form a moist biofilm environment.

[0155] Environmental Control: Environmental parameters such as temperature, humidity and pH are adjusted in real time by internal environmental control components to ensure that microorganisms are in optimal growth conditions.

[0156] Gas emissions: The clean gas after microbial degradation passes through the demister 8 to remove moisture and is safely discharged through the gas outlet pipe 53.

[0157] Wastewater treatment: The nutrient solution will accumulate metabolic products during the circulation process and needs to be replaced or treated regularly; the waste liquid is sent to the sewage treatment system for treatment to avoid secondary pollution.

[0158] Implementation case 1: Industrial waste gas treatment.

[0159] Scenario description: A chemical plant produces odorous gases containing hydrogen sulfide, ammonia and various organic volatile compounds, which need to be effectively treated to meet environmental protection requirements.

[0160] Implementation plan: 1. Air intake system: The malodorous gas from the chemical plant first passes through the air intake device, using a microporous filter to remove large particles, while adjusting the gas flow rate to ensure that it enters the subsequent treatment mode evenly; 2. Pretreatment module: The gas undergoes multi-stage filtration, with non-woven fabrics removing larger particles and HEPA filter materials removing fine particles, providing a clean gas foundation for chemical and physical treatment; 3. Physical adsorption module: Use customized activated carbon adsorption materials to efficiently adsorb VOCS and hydrogen sulfide in the gas; 4. Chemical absorption mode: The gas passes through the spray tower, which is filled with high-efficiency chemical absorption liquid specifically for removing sulfides, ammonia, etc. in the malodorous gas; 5. Biodegradation mode: The treated gas enters the biodegradation module and further degrades the remaining organic matter through immobilized microbial technology; 6. Energy recovery and control system: During the whole process, heat energy is recovered through the energy recovery system, and the intelligent control system monitors and adjusts the operation of each module to ensure processing efficiency and stability.

[0161] Effect: Through this implementation plan, the malodorous gases from the chemical plant are effectively treated, the exhaust gases meet environmental protection standards, and at the same time, energy recycling is achieved, reducing operating costs.

[0162] Implementation case 2: Treatment of malodorous gases in urban sewage treatment plants.

[0163] Scenario description: A city sewage treatment plant produces a large amount of malodorous gases during the treatment process, including hydrogen sulfide, ammonia, etc., and the emission of these gases needs to be effectively controlled.

[0164] Implementation plan: 1. Air inlet device: After preliminary large particle filtration and flow rate adjustment, the odorous gas from the sewage treatment plant is evenly distributed to the subsequent treatment modules; 2. Pretreatment module: remove suspended particles in the gas through a high-efficiency filtration system to ensure the purity of the gas; 3. Physical adsorption module and chemical absorption module: Combine physical adsorption and chemical absorption technologies to remove harmful components such as sulfide and ammonia in the gas in a targeted manner; 4. Biodegradation module: Use specially selected microbial strains to biodegrade the treated gas to further reduce odor components; 5. Energy recovery and control system: The working status of each processing module is adjusted through the intelligent control system, and energy consumption is reduced through the energy recovery system.

[0165] Effect: This implementation scheme effectively treats the malodorous gases generated by the sewage treatment plant, significantly reduces the odor intensity, improves the quality of the surrounding environment, and achieves efficient use of energy.

[0166] Compared with the prior art, the present invention has at least the following benefits: the device adopts a method combining physical adsorption, chemical absorption and biodegradation to efficiently purify malodorous gases emitted from industry and life; the modular design enables the device to be flexibly configured according to treatment requirements; the use of an efficient gas distribution system and multi-stage treatment technology significantly improves the treatment efficiency and effect of malodorous gases.

[0167] Modular design: It consists of several processing modules, each designed for a specific gas composition or processing stage; this design allows the device to be flexibly combined according to actual processing needs and site conditions, and is easy to expand and maintain.

[0168] Multi-stage treatment technology: physical adsorption, chemical absorption and biodegradation are used to form a multi-stage treatment process; the physical adsorption layer first removes most of the particulate matter and some organic matter; the chemical absorption layer further removes specific harmful gas components; finally, the biodegradation layer uses specially selected microorganisms to degrade the remaining organic pollutants, thereby achieving efficient odor gas purification.

[0169] Efficient gas distribution system: The device is designed with an efficient gas distribution system to ensure that the malodorous gas is evenly distributed to each treatment module, thereby improving the treatment efficiency and effect.

[0170] Environmental friendliness and energy recovery: During the treatment process, a specially designed energy recovery system is used to recover the heat energy generated during the treatment process and use it for heating or other energy needs of the device, thereby improving energy utilization efficiency and reducing environmental impact.

[0171] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0172] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0173] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. Integrated modular malodorous gas treatment device, characterized in that: It includes an air intake module, a pretreatment module, a physical adsorption module, a chemical absorption module, a biodegradation module, and a control system communicating with each module. The air intake module, the pretreatment module, and the physical adsorption module are connected in sequence; The chemical absorption module is an optional configuration and is connected after the physical adsorption module; The biodegradation module is an optional configuration and is connected after the physical adsorption module or the chemical absorption module.

2. The integrated modular malodorous gas treatment device according to claim 1, characterized in that: The air intake module comprises: an air intake pipe (11) and a uniformly distributed cavity (12); The air inlet pipe (11) is provided with a primary filter assembly (14); the primary filter assembly (14) is a coarse particle filter mesh, and is made of a stainless steel woven mesh; The air inlet pipe (11) is also provided with an air flow regulating component (15); the component is an adjustable air valve, which is installed after the primary filter component (14) and accurately controls the gas flow and pressure according to real-time processing requirements; An induced draft fan (16) is also provided in the air inlet pipe (11); An airflow distribution component (121) and a pressure distribution chamber (122) are provided in the distribution chamber (12); The airflow distribution component (121) is a multi-layer guide plate, which is arranged at the inlet end of the distribution chamber (12); a pressure equalization chamber (122) is arranged behind the airflow distribution component (121) so that the gas can achieve a stable pressure and velocity distribution.

3. The integrated modular malodorous gas treatment device according to claim 2, characterized in that: The air intake module is also provided with: a monitoring component; The monitoring components include: a gas composition monitor, a temperature and humidity sensor; The gas composition monitor is installed in the air inlet pipe (11) to detect the concentration of major pollutants and provide data support for the control system; the temperature and humidity sensor monitors the temperature and humidity of the gas.

4. The integrated modular malodorous gas treatment device according to claim 1, characterized in that: The pre-processing module comprises: a pre-processing housing, and a multi-stage filtering component arranged inside the pre-processing housing; The multi-stage filtration assembly comprises: Primary coarse filter layer (21): made of non-woven fabric material to remove large particles; Secondary medium-efficiency filter layer (22): using melt-blown polypropylene filter material to remove medium-sized particles; The third-level fine filter layer (23) uses a high-efficiency particulate air filter to filter out tiny particles.

5. The integrated modular malodorous gas treatment device according to claim 1 or 4, characterized in that: The pre-treatment module is designed according to the flow rate to ensure that the filtration wind speed is between 0.5 and 1.5 m / s.

6. The integrated modular malodorous gas treatment device according to claim 1, characterized in that: The physical adsorption module comprises: a physical adsorption shell, and a multi-layer adsorption bed (31) arranged inside the physical adsorption shell; The adsorption bed (31) uses porous activated carbon with a high specific surface area; Porous activated carbon is activated carbon with acidic or alkaline surface modification; Porous activated carbon is mixed with activated alumina.

7. The integrated modular malodorous gas treatment device according to claim 6, characterized in that: A pressure difference sensor (7) is installed at the front and rear ends of the adsorption bed (31) to monitor the pressure difference between the front and rear ends of the adsorption bed (31) in real time, and to judge the resistance change and saturation of the adsorption material; when it is close to saturation or an abnormal situation occurs, it is prompted that the adsorption material needs to be regenerated or replaced; The physical adsorption module is also provided with an online regeneration system; the service life of the adsorption material is extended by hot air regeneration.

8. The integrated modular malodorous gas treatment device according to claim 1, characterized in that: The chemical absorption module is a horizontal spray absorption tower structure, provided with multiple layers of fillers; The horizontal spray absorption tower structure is provided with a spray system and an absorption liquid system; The spray system comprises: a spray pipe and a spray pump; The absorption liquid system comprises: an absorption liquid storage tank (41), a pH value control component; The pH value control component includes an online pH value monitor and an automatic dosing device to adjust the pH value of the absorption liquid in real time; The gas outlet of the chemical absorption module is also provided with a demister (8) to remove entrained liquid droplets.

9. The integrated modular malodorous gas treatment device according to claim 1, characterized in that: The biodegradation module comprises: a bioreactor shell, and a multilayer biofilm reactor (51) arranged inside the bioreactor shell; The packing layer of the biofilm reactor (51) uses biological packing with a high specific surface area; the packing layer is multi-layered and staggered, thereby increasing the contact time and area between the gas and the microorganisms; The biodegradation module is also provided with: a nutrient solution circulation system; The nutrient solution circulation system comprises: a spray pipe, a nutrient solution storage tank (52), and a circulation pump; A spray pipe and a nozzle are installed on the top of the filler layer to evenly spray the nutrient solution on the filler surface to maintain the growth environment of the microorganisms; the nutrient solution storage tank (52) stores and supplies nutrients required by the microorganisms; and the circulation pump transports the nutrient solution from the nutrient solution storage tank (52) to the spray pipe to form a circulation.

10. The integrated modular malodorous gas treatment device according to claim 9, characterized in that: The biodegradation module is also provided with: an internal environment control component; The internal environment control components include: a pH sensor and a dosing device, which monitor and adjust the pH value of the nutrient solution to a suitable range for microorganisms in real time; The biodegradation module is also provided with: a gas exhaust component; The gas exhaust component comprises: a demister (8) and an air outlet pipe (53); the demister (8) is arranged on the top of the biodegradation module to remove water droplets carried in the gas; the clean gas after passing through the demister (8) is discharged into the atmosphere through the air outlet pipe (53).

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