Odor treatment system for garbage transfer station

Abstract

The invention discloses a garbage transfer station odor treatment system which comprises S1, a fresh air ionization module for performing high-energy ionization treatment on fresh air introduced from the outside to generate high-energy oxidation ion wind; s2, the odor collection module collects odor generated in the process of the garbage transfer station and conveys the odor to the primary reaction module; s3, the primary reaction module is used for carrying out primary reaction on the high-energy oxidation ion wind and the odor of the odor collection module to generate partially decomposed mixed gas; s4, a narrow pulse plasma deep treatment module is used for generating high-energy active particles and performing deep decomposition on the high-energy active particles and residual odor molecules in the mixed gas to generate decomposition product gas; s5, an auxiliary purification module is used for carrying out particulate matter filtration and harmful gas separation on decomposition product gas; and S6, discharging the purified gas of the auxiliary purification module into the atmospheric environment through an exhaust pipeline. The method has the advantages of high treatment efficiency, low energy consumption, high operation stability and high dynamic adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of odor treatment, and in particular to an odor treatment system for a garbage transfer station. Background Art

[0002] With the acceleration of urbanization and the continuous improvement of residents' living standards, garbage transfer stations have become an important part of the urban garbage disposal system. However, during the collection, storage and transportation of garbage, a large amount of odorous gases are generated, which poses a serious threat to the surrounding environment and human health. These odors are mainly composed of volatile organic compounds, sulfides, ammonia and amine compounds. Their complexity and high pollution put forward extremely high requirements for odor treatment technology.

[0003] In the prior art, the methods for treating odor in garbage transfer stations mainly include biological filtration, chemical spraying and traditional plasma treatment. However, these methods still have many technical defects in practical applications, which are as follows: 1. Low treatment efficiency: Traditional biological filtration and chemical spraying technologies are inefficient in treating complex odor components, especially for high-concentration and multi-component odors, and have limited purification effects, making it difficult to meet strict emission standards.

[0004] 2. High energy consumption or heavy environmental burden: Existing plasma processing technologies usually require high energy consumption to maintain stable operation, and are prone to secondary pollution, such as ozone or toxic byproducts, increasing the environmental burden.

[0005] 3. Low system integration: Most odor treatment systems lack modular design, and the collaboration between units is poor, making it difficult to achieve efficient hierarchical treatment of odor, affecting overall operating efficiency.

[0006] 4. Lack of dynamic response capability: Existing technologies are mostly based on a single treatment mode and are unable to adjust treatment parameters according to dynamic changes in odor concentration and composition, resulting in increased operating costs and unstable treatment effects.

[0007] Therefore, how to provide a garbage transfer station odor treatment system is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0008] One purpose of the present invention is to propose an odor treatment system for a garbage transfer station. The present invention combines the efficient pretreatment capability of the ion fresh air system and the deep decomposition performance of the narrow pulse plasma technology, and describes in detail the multi-level collaborative module design in the odor treatment process. It has the advantages of high processing efficiency, low energy consumption, strong operating stability and strong dynamic adaptability.

[0009] According to an embodiment of the present invention, a garbage transfer station odor treatment system includes: S1, a fresh air ionization module, which performs high-energy ionization treatment on fresh air introduced from the outside through a high-energy oxidizing ion generator to generate high-energy oxidizing ion wind; S2, odor collection module, used to collect odor generated in the garbage transfer station during garbage processing and transportation, and transport it to the primary reaction module; S3, a primary reaction module, which uses an oxidation reaction device to make the high-energy oxidizing ion wind and the odor from the odor collection module undergo a preliminary reaction to generate a partially decomposed mixed gas; S4, narrow pulse plasma deep processing module, generates high-energy active particles and deeply decomposes residual odor molecules in the mixed gas to generate decomposition product gas; S5, auxiliary purification module, used to filter particulate matter and separate harmful gases from the decomposition product gas to obtain purified gas that meets emission standards; S6, an emission module, used to discharge the purified gas of the auxiliary purification module into the atmosphere through an exhaust pipe.

[0010] Optionally, the S1 specifically includes: S11, a high-energy oxidation ion generating unit, which drives a high-voltage electrode group through a high-voltage pulse power supply, wherein the high-voltage electrode group includes a symmetrically arranged anode and cathode, and a strong electric field region is formed between the anode and the cathode, wherein the strong electric field region is used to excite fresh air molecules to generate high-energy oxidation ions, and the high-energy oxidation ions are output through a guide path; S12, an air introduction unit, including a flow control valve and a flow equalizing device, to introduce external fresh air into the high-energy oxidation ion generating unit at a stable flow rate; S13, an ion wind generating unit, through the synergistic effect of the high-energy oxidation ion generating unit and the air introducing unit, mixes the high-energy oxidation ions with the air to form a high-energy oxidation ion wind; S14, an ion wind concentration control unit, which is arranged at the outlet of the ion wind generating unit and is used to control the oxidizing ion concentration of the high-energy oxidizing ion wind. To make dynamic adjustments: ;in, is the concentration of oxidizing ions, is the time-varying function of the electric field strength, which comes from the electric field between the anode and cathode in the high-voltage electrode group. Represents the effective discharge area of ​​the high voltage electrode group, is the air flow rate passing through the ion wind generating unit per unit time, and is the start and end time of air passing through the ion wind generating unit, Indicates the aerodynamic correction coefficient, which is related to the instantaneous air velocity and air density Related, specifically expressed as: ; in, is the instantaneous air velocity, is the air density, is the viscosity coefficient of air; S15, an ion wind output unit, connected to the outlet end of the ion wind generating unit, used to transport the generated high-energy oxidizing ion wind to the primary reaction module through a pipeline, and the ion wind output unit is equipped with a pressure regulating device to maintain a stable flow of the high-energy oxidizing ion wind.

[0011] Optionally, the S3 specifically includes: S31, the shell of the oxidation reaction device forms a closed reaction chamber, the closed reaction chamber is provided with a high-energy oxidation ion wind inlet and an odor inlet, the high-energy oxidation ion wind inlet is connected to the ion wind output unit, and the odor inlet is connected to the odor collection module; S32, a mixing flow unit, which is arranged inside the closed reaction chamber and includes a spiral guide structure and a diversion baffle, and is used to fully mix the high-energy oxidizing ion wind and the odor after they enter the closed reaction chamber; S33, a reaction catalytic unit, located in the central position of the closed reaction chamber, comprising a porous catalytic mesh and an active coating, wherein the porous catalytic mesh is used to increase the reaction surface area, and the active coating is composed of metal oxides and active ion materials to promote the oxidation decomposition reaction between high-energy oxidizing ion wind and odor molecules; S34, a reaction parameter control unit, which is arranged on the outer shell of the oxidation reaction device and includes a temperature control device and a pressure regulating valve, and is used to control the temperature and pressure in the reaction chamber; S35, a reaction product output unit is arranged at the outlet end of the oxidation reaction device shell, and transports the partially decomposed mixed gas generated by the oxidation reaction to the narrow pulse plasma deep processing module through a pipeline.

[0012] Optionally, the S32 specifically includes: S321, spiral guide structure, arranged at the inlet area inside the closed reaction chamber, including a number of guide vanes, which are arranged in a spiral direction at a fixed guide angle to guide the high-energy oxidizing ion wind and the odor to mix along the spiral path: ; in, To fix the diversion angle, is the initial flow rate of gas mixing, is the mixed gas density of high-energy oxidizing ion wind and odor, is the dynamic viscosity coefficient of the mixed gas of high-energy oxidizing ion wind and odor; S322, a flow dividing plate, arranged in the middle area of ​​the closed reaction chamber, including multiple layers of evenly distributed flow dividing nets and separation channels, wherein the pore size of the flow dividing net is for: ; in, is the aperture of the diversion network, is the proportionality coefficient related to the mixing efficiency, is the volume flow of gas entering the diversion network per unit time, is the effective flow area of ​​the diversion network; S323, a gas flow balancing unit is arranged in the outlet area of ​​the closed reaction chamber. The gas flow balancing unit includes a plurality of flow balancing plates arranged in parallel. After the mixed gas passes through the diversion baffle, the flow velocity distribution is further balanced so that the mixed gas enters the reaction catalytic unit at a uniform flow velocity.

[0013] Optionally, the S33 specifically includes: S331, a porous catalytic net is arranged in the center of the closed reaction chamber, and has a plurality of holes with a diameter of via: ; in, is the through hole diameter, is the number of through holes per unit area, is the catalytic surface area of ​​the porous catalytic mesh, is the effective cross-sectional area of ​​the porous catalytic mesh; S332, the active coating is composed of metal oxides and active ion materials, with a thickness of Coated on the inner wall surface of the porous catalytic mesh: ; in, is the thickness of the active coating, is the coating mass on the unit catalytic net, is the density of the active coating material, is the catalytic surface area of ​​the porous catalytic mesh; S333, catalytic net support structure, arranged at the periphery of the porous catalytic net, used to fix the position of the catalytic net, including an inner ring support frame and radial reinforcement ribs: ; in, is the number of reinforcement ribs, is the total pressure of the mixed gas flow, is the reinforcement bearing coefficient, is the length of the reinforcement, is the compressive strength of the reinforcement material; S334, gas channel units are distributed around the porous catalytic net to guide the mixed gas of high-energy oxidizing ion wind and odor molecules. Optionally, the S4 specifically includes: S41, high-voltage pulse power supply module, including a capacitor energy storage unit and a fast discharge unit, used to generate a nanosecond pulse high-voltage electric field, the fast discharge unit adjusts the pulse frequency , pulse width Realize dynamic generation of high energy electric field, pulse electric field intensity for: ;in, is the pulse electric field strength, is the time variation function of the pulse peak voltage, is the pulse duration, is the pulse voltage attenuation coefficient, is the distance between discharge electrodes; S42, a discharge electrode group, comprising a plurality of symmetrically arranged anodes and cathodes, wherein the anodes and cathodes are made of conductive materials, and a high temperature resistant insulating layer is provided on the surface of the discharge electrode group, and a non-uniform high energy electric field is formed between the electrodes to stimulate the dissociation and ionization reaction of molecules in the mixed gas; S43, a high-energy active particle generation module, which is arranged in the reaction area of ​​the discharge electrode assembly and is used to generate high-energy active particles through pulse discharge. The high-energy active particles include free radicals, ions and excited state molecules, and their concentration is: ; in, is the concentration of high-energy active particles, is the time-varying function of energy conversion efficiency, is the instantaneous value of pulse discharge power, is the attenuation coefficient of high-energy active particles, is the time-varying function of the high-energy active particle loss coefficient, It is the instantaneous value of the spatial range where high-energy active particles actually react with odor molecules. and is the start and end time of the reaction; S44, a gas flow control assembly is arranged at both ends of the high-energy active particle generation module to regulate the flow characteristics of the mixed gas in the reaction zone. The gas flow control assembly includes a flow regulating valve and a flow guide pipe, which are used to adjust the flow rate of the mixed gas so that the total residence time of the mixed gas in the reaction zone is for: ; in, is the total residence time of the mixed gas in the reaction zone, is the effective length of the reaction zone, is the flow rate adjustment factor, is the gas velocity attenuation coefficient, is the coordinate along the length of the reaction zone, is the lengthwise distribution of the mixed gas velocity; S45, a decomposition product collection module is arranged at the outlet end of the reaction zone to guide the decomposition product gas after being acted upon by the high-energy active particles to the auxiliary purification module.

[0014] Optionally, the S5 specifically includes: S51, a particle filter unit, arranged at the inlet end of the decomposition product gas, for filtering solid particles in the decomposition product gas, the particle filter unit comprising a multi-layer filter screen and a dynamic adjustment device, the pore size distribution of the multi-layer filter screen satisfies the following relationship: ; in, For the The pore size of the filter screen, is the minimum filter aperture, is the increment of the adjacent filter mesh apertures, is the number of the filter layer; S52, a harmful gas separation unit, including an adsorption module and a catalytic reaction module, is arranged downstream of the particle filter unit, and is used to separate harmful compounds in the decomposition product gas, wherein the adsorption module contains a multi-layer activated carbon adsorption material, and the specific surface area of ​​the activated carbon particles is Expressed as: ;in, is the specific surface area of ​​activated carbon, is the activated carbon mass, is the density of activated carbon, is the average diameter of activated carbon particles; The catalytic reaction module includes a metal oxide catalyst, the activity of which is measured by the catalytic efficiency express: ; in, is the catalytic efficiency, is the initial concentration of harmful gases entering the catalytic module, is the gas concentration after being treated by the catalytic module; S53, a gas uniform distribution unit is arranged at the outlet end of the harmful gas separation unit to balance the flow rate and distribution of the purified gas so that the purified gas enters the emission module at a stable flow rate.

[0015] The beneficial effects of the present invention are: (1) The present invention achieves efficient treatment of odor from garbage transfer stations by combining ion fresh air technology and narrow pulse plasma technology. The ion fresh air system provides high-energy oxidizing ion wind to initially decompose odor molecules and reduce their concentration, creating a good reaction environment for deep treatment by narrow pulse plasma technology; narrow pulse plasma technology uses nanosecond pulsed high-voltage electric fields to generate high-energy active particles to deeply decompose residual odor molecules, thereby effectively purifying complex odorous gas components.

[0016] (2) The present invention achieves real-time adaptability and high efficiency in the odor treatment process by dynamically adjusting the parameters of each treatment module. Specifically, a multi-level linkage is achieved between the primary reaction module, the narrow pulse plasma module and the auxiliary purification module, which can dynamically adjust the reaction conditions according to the changes in odor concentration and composition, thereby improving the system's treatment efficiency and operating stability, while reducing energy consumption and operating costs.

[0017] (3) The present invention adopts modular design, including fresh air ionization module, odor collection module, narrow pulse plasma deep treatment module and auxiliary purification module, to achieve the whole process of odor treatment from collection, pretreatment to deep purification, and provide a systematic solution for the efficient treatment of complex odor. At the same time, the multi-stage treatment methods such as particulate matter filtration, harmful gas separation and active catalysis are used to comprehensively improve the purification capacity of odor, ensuring that the final exhaust gas meets environmental protection standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of an odor treatment system for a garbage transfer station proposed by the present invention. DETAILED DESCRIPTION

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0020] refer to Figure 1 , a garbage transfer station odor treatment system, comprising: S1, fresh air ionization module, uses a high-energy oxidation ion generator to ionize the fresh air introduced from the outside to generate high-energy oxidation ion wind; In this implementation, S1 specifically includes: S11, a high-energy oxidation ion generating unit, which drives a high-voltage electrode group through a high-voltage pulse power supply, wherein the high-voltage electrode group includes a symmetrically arranged anode and cathode, and a strong electric field region is formed between the anode and the cathode, wherein the strong electric field region is used to excite fresh air molecules to generate high-energy oxidation ions, and the high-energy oxidation ions are output through a guide path; S12, an air introduction unit, including a flow control valve and a flow equalizing device, to introduce external fresh air into the high-energy oxidation ion generating unit at a stable flow rate; S13, an ion wind generating unit, through the synergistic effect of the high-energy oxidation ion generating unit and the air introducing unit, mixes the high-energy oxidation ions with the air to form a high-energy oxidation ion wind; S14, an ion wind concentration control unit, which is arranged at the outlet of the ion wind generating unit and is used to control the oxidizing ion concentration of the high-energy oxidizing ion wind. To make dynamic adjustments: ; in, is the concentration of oxidizing ions, is the time-varying function of the electric field strength, which comes from the electric field between the anode and cathode in the high-voltage electrode group. Represents the effective discharge area of ​​the high voltage electrode group, is the air flow rate passing through the ion wind generating unit per unit time, and is the start and end time of air passing through the ion wind generating unit, Indicates the aerodynamic correction coefficient, which is related to the instantaneous air velocity and air density Related, specifically expressed as: ; in, is the instantaneous air velocity, is the air density, is the viscosity coefficient of air; S15, an ion wind output unit, connected to the outlet end of the ion wind generating unit, used to transport the generated high-energy oxidizing ion wind to the primary reaction module through a pipeline, and the ion wind output unit is equipped with a pressure regulating device to maintain a stable flow of the high-energy oxidizing ion wind.

[0021] This embodiment provides efficient pretreatment of odor molecules through the high-energy oxidizing ion wind generated by the fresh air ionization module, which not only significantly reduces the concentration of odor, but also creates a more efficient reaction environment for subsequent deep processing. The module combines the electric field excitation capability of the high-voltage electrode group and the guiding mechanism of fresh air, so that high-energy oxidizing ions are fully in contact with odor molecules and accurately decompose the complex odor molecular structure.

[0022] S2, odor collection module, used to collect odor generated in the garbage transfer station during garbage processing and transportation, and transport it to the primary reaction module; This embodiment combines the odor collection module with the closed pipe system to provide efficient capture of odorous gases in the garbage transfer station. It not only ensures the comprehensive collection of odors, but also reduces the risk of leakage and diffusion through precise negative pressure control and diversion design, and can more effectively transport the complex odorous gases generated in garbage disposal to subsequent processing modules.

[0023] S3, a primary reaction module, which uses an oxidation reaction device to make the high-energy oxidizing ion wind and the odor from the odor collection module undergo a preliminary reaction to generate a partially decomposed mixed gas; In this embodiment, S3 specifically includes: S31, an oxidation reaction device housing, forming a closed reaction chamber, wherein the closed reaction chamber is provided with a high-energy oxidation ion wind inlet and an odor inlet, the high-energy oxidation ion wind inlet is connected to the ion wind output unit, and the odor inlet is connected to the odor collection module; S32, a mixing flow unit, which is arranged inside the closed reaction chamber and includes a spiral guide structure and a diversion baffle, and is used to fully mix the high-energy oxidizing ion wind and the odor after they enter the closed reaction chamber; S33, a reaction catalytic unit, located in the central position of the closed reaction chamber, comprising a porous catalytic mesh and an active coating, wherein the porous catalytic mesh is used to increase the reaction surface area, and the active coating is composed of metal oxides and active ion materials to promote the oxidation decomposition reaction between high-energy oxidizing ion wind and odor molecules; S34, a reaction parameter control unit, which is arranged on the outer shell of the oxidation reaction device and includes a temperature control device and a pressure regulating valve, and is used to control the temperature and pressure in the reaction chamber; S35, a reaction product output unit is arranged at the outlet end of the oxidation reaction device shell, and transports the partially decomposed mixed gas generated by the oxidation reaction to the narrow pulse plasma deep processing module through a pipeline.

[0024] S321, spiral guide structure, arranged at the inlet area of ​​the closed reaction chamber, including a plurality of guide plates, the guide plates are arranged at a fixed guide angle Arranged in a spiral direction, high-energy oxidizing ion wind is guided to mix with odor along the spiral path: ; in, To fix the diversion angle, is the initial flow rate of gas mixing, is the mixed gas density of high-energy oxidizing ion wind and odor, is the dynamic viscosity coefficient of the mixed gas of high-energy oxidizing ion wind and odor; S322, a flow dividing plate, arranged in the middle area of ​​the closed reaction chamber, including multiple layers of evenly distributed flow dividing nets and separation channels, wherein the pore size of the flow dividing net is for: ; in, is the aperture of the diversion network, is the proportionality coefficient related to the mixing efficiency, is the volume flow of gas entering the diversion network per unit time, is the effective flow area of ​​the diversion network; S323, a gas flow balancing unit is arranged in the outlet area of ​​the closed reaction chamber. The gas flow balancing unit includes a plurality of flow balancing plates arranged in parallel. After the mixed gas passes through the diversion baffle, the flow velocity distribution is further balanced so that the mixed gas enters the reaction catalytic unit at a uniform flow velocity.

[0025] S331, a porous catalytic net is arranged in the center of the closed reaction chamber, and has a plurality of holes with a diameter of via: ; in, is the through hole diameter, is the number of through holes per unit area, is the catalytic surface area of ​​the porous catalytic mesh, is the effective cross-sectional area of ​​the porous catalytic mesh; S332, the active coating is composed of metal oxides and active ion materials, with a thickness of Coated on the inner wall surface of the porous catalytic mesh: ; in, is the thickness of the active coating, is the coating mass on the unit catalytic net, is the density of the active coating material, is the catalytic surface area of ​​the porous catalytic mesh; S333, catalytic net support structure, arranged at the periphery of the porous catalytic net, used to fix the position of the catalytic net, including an inner ring support frame and radial reinforcement ribs: ; ;in, is the number of reinforcement ribs, is the total pressure of the mixed gas flow, is the reinforcement bearing coefficient, is the length of the reinforcement, is the compressive strength of the reinforcement material; S334, gas channel unit, distributed around the porous catalytic net, guides the mixed gas of high-energy oxidizing ion wind and odor molecules.

[0026] This embodiment realizes efficient preliminary decomposition of high-energy oxidizing ion wind and odor molecules in the primary reaction module by utilizing the synergistic effect of the porous catalytic mesh and the active coating. The porous catalytic mesh provides a large reaction surface area to ensure full contact between the gas molecules and the catalyst; the active coating significantly improves the decomposition efficiency of odor molecules through the reaction characteristics of metal oxides and active ion materials. This design can not only quickly decompose the main pollutants in complex odor, but also provide a better reaction environment for the subsequent deep processing module.

[0027] S4, narrow pulse plasma deep processing module, generates high-energy active particles and deeply decomposes residual odor molecules in the mixed gas to generate decomposition product gas; In this implementation, S4 specifically includes: S41, high-voltage pulse power supply module, including a capacitor energy storage unit and a fast discharge unit, used to generate a nanosecond pulse high-voltage electric field, the fast discharge unit adjusts the pulse frequency , pulse width Realize dynamic generation of high energy electric field, pulse electric field intensity for: ; in, is the pulse electric field strength, is the time variation function of the pulse peak voltage, is the pulse duration, is the pulse voltage attenuation coefficient, is the distance between discharge electrodes; S42, a discharge electrode group, comprising a plurality of symmetrically arranged anodes and cathodes, wherein the anodes and cathodes are made of conductive materials, and a high temperature resistant insulating layer is provided on the surface of the discharge electrode group, and a non-uniform high energy electric field is formed between the electrodes to stimulate the dissociation and ionization reaction of molecules in the mixed gas; S43, a high-energy active particle generation module, which is arranged in the reaction area of ​​the discharge electrode assembly and is used to generate high-energy active particles through pulse discharge. The high-energy active particles include free radicals, ions and excited state molecules, and their concentration is: ; in, is the concentration of high-energy active particles, is the time-varying function of energy conversion efficiency, is the instantaneous value of pulse discharge power, is the attenuation coefficient of high-energy active particles, is the time-varying function of the high-energy active particle loss coefficient, It is the instantaneous value of the spatial range where high-energy active particles actually react with odor molecules. and is the start and end time of the reaction; S44, a gas flow control assembly is arranged at both ends of the high-energy active particle generation module to regulate the flow characteristics of the mixed gas in the reaction zone. The gas flow control assembly includes a flow regulating valve and a flow guide pipe, which are used to adjust the flow rate of the mixed gas so that the total residence time of the mixed gas in the reaction zone is for: ; in, is the total residence time of the mixed gas in the reaction zone, is the effective length of the reaction zone, is the flow rate adjustment factor, is the gas velocity attenuation coefficient, is the coordinate along the length of the reaction zone, is the lengthwise distribution of the mixed gas velocity; S45, a decomposition product collection module is arranged at the outlet end of the reaction zone to guide the decomposition product gas after being acted upon by the high-energy active particles to the auxiliary purification module.

[0028] In this embodiment, the high-voltage pulse power module generates a nanosecond pulse high-voltage electric field, which is combined with the discharge electrode group to generate a high-energy non-uniform electric field to stimulate the molecules in the mixed gas to dissociate and ionize. At the same time, the high-energy active particle generation module generates high-energy active particles to achieve deep decomposition of odor molecules. By dynamically adjusting the residence time and flow rate distribution in the gas flow control component, the treatment effect of the mixed gas in the reaction zone is ensured to reach the optimal state.

[0029] S5, auxiliary purification module, used to filter particulate matter and separate harmful gases from the decomposition product gas to obtain purified gas that meets emission standards; In this implementation, S5 specifically includes: S51, a particle filter unit, arranged at the inlet end of the decomposition product gas, for filtering solid particles in the decomposition product gas, the particle filter unit comprising a multi-layer filter screen and a dynamic adjustment device, the pore size distribution of the multi-layer filter screen satisfies the following relationship: ;in, For the The pore size of the filter screen, is the minimum filter aperture, is the increment of the adjacent filter mesh apertures, is the number of the filter layer; S52, a harmful gas separation unit, including an adsorption module and a catalytic reaction module, is arranged downstream of the particle filter unit, and is used to separate harmful compounds in the decomposition product gas, wherein the adsorption module contains a multi-layer activated carbon adsorption material, and the specific surface area of ​​the activated carbon particles is Expressed as: ; in, is the specific surface area of ​​activated carbon, is the activated carbon mass, is the density of activated carbon, is the average diameter of activated carbon particles; The catalytic reaction module includes a metal oxide catalyst, the activity of which is measured by the catalytic efficiency express: ; in, is the catalytic efficiency, is the initial concentration of harmful gases entering the catalytic module, is the gas concentration after being treated by the catalytic module; S53, a gas uniform distribution unit is arranged at the outlet end of the harmful gas separation unit to balance the flow rate and distribution of the purified gas so that the purified gas enters the emission module at a stable flow rate.

[0030] This embodiment uses the synergistic effect of the particle filtration unit and the harmful gas separation unit to perform multi-level purification treatment on the decomposition product gas. The particle filtration unit achieves efficient filtration of solid particles of different particle sizes by dynamically adjusting the pore size distribution of the filter; the harmful gas separation unit combines the adsorption module with the catalytic reaction module, and uses the high specific surface area of ​​the activated carbon material to achieve rapid adsorption of various gaseous pollutants, while deeply decomposing the residual harmful gas molecules through the metal oxide catalyst.

[0031] S6, an emission module, used to discharge the purified gas of the auxiliary purification module into the atmosphere through an exhaust pipe.

[0032] Example: In order to verify the feasibility and superiority of the present invention, the garbage transfer station odor treatment system of the present invention is applied to a garbage transfer station in the city center. The garbage transfer station is located near a residential area, and the average daily garbage processing volume is about 120 tons. The emission of malodorous gases has seriously affected the living environment of surrounding residents. In the past, the transfer station mainly used traditional biological filtration and chemical spraying technology to treat odor, but the effect was not good, the treatment efficiency was low, and the equipment operation and maintenance costs were high, making it difficult to meet environmental protection requirements and economic benefits. For this reason, the transfer station uses the system of the present invention to comprehensively transform the existing treatment device.

[0033] The odor treatment system of the garbage transfer station of the present invention is composed of six modules, including a fresh air ionization module, an odor collection module, a primary reaction module, a narrow pulse plasma deep treatment module, an auxiliary purification module and an emission module. The system forms an efficient and collaborative multi-stage odor treatment process through modular design. In practical applications, the odorous gas is first extracted from the closed treatment space of the garbage transfer station through the odor collection module and enters the system. Subsequently, the gas enters the fresh air ionization module, and the odor molecules are preliminarily decomposed by the action of high-energy oxidizing ions to reduce the concentration and weaken the odor. Next, the gas is transported to the primary reaction module, and the complex gas components are further decomposed by the synergistic effect of the porous catalytic mesh and the active coating. The deep decomposition is completed in the narrow pulse plasma module, which generates high-energy active particles through nanosecond pulse electric fields to thoroughly decompose the residual odor molecules. Finally, after passing through the auxiliary purification module, the particulate matter and harmful components in the gas are separated, and the emission module discharges the purified gas that meets the standards into the atmosphere.

[0034] During the three-month continuous operation of the system, the system was tested and recorded the odor component concentration, treatment efficiency, energy consumption and operating cost data before and after the system treatment through online monitoring and offline analysis, and compared with the traditional technology before the transformation. The specific data is shown in the following table:

[0035] Data Category describe Data before transformation After transformation Odor components (mg / m³) Total concentration of major pollutants 1050 150 Odor index (OU / m³) Sensory concentration of odor in garbage disposal areas 30 5 Operating energy consumption (kWh / t) Energy consumption of equipment during waste treatment per ton 2.3 1.5 System stability Monthly equipment downtime 5 hours 0.5 hours Emission compliance rate Emission rate of purified gas meeting the standard 80% 99.5% Comprehensive operating cost (yuan / day) Including comprehensive operating costs such as energy consumption, maintenance, and materials 1200 850 The data in the above table show that after the system transformation of the present invention, the odor treatment effect has been significantly improved. The total concentration of odor has dropped from 1050 mg / m³ before the transformation to 150 mg / m³, the emission rate that meets the standard has increased from 80% to 99.5%, and the odor index has been significantly reduced from 30 OU / m³ to 5 OU / m³. In addition, the operating energy consumption of the system has been reduced from 2.3 kWh / t to 1.5 kWh / t, and the comprehensive operating cost has been reduced by 29.2%.

[0036] In a specific scenario, the odor concentration of the transfer station instantly rose to 1500mg / m³ due to the peak of garbage transportation. The system automatically increased the ion wind intensity of the primary reaction module and the pulse frequency of the narrow pulse plasma module through real-time monitoring and dynamic adjustment functions. In just 5 minutes, the system stably controlled the odor concentration below the emission standard, while ensuring that the odor index of the exhaust gas was maintained within the specified range without affecting the surrounding environment.

[0037] In order to further verify the economy and adaptability of the present invention, another suburban garbage transfer station with an average daily garbage processing capacity of 200 tons was selected for comparative testing. Compared with the traditional chemical spraying technology, the system of the present invention reduces the operating energy consumption by 38%, improves the exhaust gas treatment efficiency by 25%, and reduces the odor index from 35 OU / m³ before the transformation to 4 OU / m³. In addition, the monthly maintenance cost during the operation of the equipment is reduced by 22%.

[0038] Through this implementation verification, the garbage transfer station odor treatment system of the present invention effectively solves the problems of low treatment efficiency, high energy consumption and poor adaptability of traditional technologies, significantly improves the odor treatment efficiency, reduces operating costs and energy consumption, and has strong practicality and economic benefits. At the same time, the modular design is easy to expand and maintain, providing a reliable technical solution for the treatment of odorous gases.

[0039] 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.

Claims

1. A garbage transfer station odor treatment system, characterized in that: include: S1, fresh air ionization module, uses a high-energy oxidation ion generator to ionize the fresh air introduced from the outside to generate high-energy oxidation ion wind; S2, odor collection module, used to collect odor generated in the garbage transfer station during garbage processing and transportation, and transport it to the primary reaction module; S3, a primary reaction module, which uses an oxidation reaction device to make the high-energy oxidizing ion wind and the odor from the odor collection module undergo a preliminary reaction to generate a partially decomposed mixed gas; S4, narrow pulse plasma deep processing module, generates high-energy active particles and deeply decomposes residual odor molecules in the mixed gas to generate decomposition product gas; S5, auxiliary purification module, used to filter particulate matter and separate harmful gases from the decomposition product gas to obtain purified gas that meets emission standards; S6, an emission module, used to discharge the purified gas of the auxiliary purification module into the atmosphere through an exhaust pipe.

2. The odor treatment system of a garbage transfer station according to claim 1, characterized in that: The S1 specifically includes: S11, a high-energy oxidation ion generating unit, which drives a high-voltage electrode group through a high-voltage pulse power supply, wherein the high-voltage electrode group includes a symmetrically arranged anode and cathode, and a strong electric field region is formed between the anode and the cathode, wherein the strong electric field region is used to excite fresh air molecules to generate high-energy oxidation ions, and the high-energy oxidation ions are output through a guide path; S12, an air introduction unit, including a flow control valve and a flow equalizing device, to introduce external fresh air into the high-energy oxidation ion generating unit at a stable flow rate; S13, an ion wind generating unit, through the synergistic effect of the high-energy oxidation ion generating unit and the air introducing unit, mixes the high-energy oxidation ions with the air to form a high-energy oxidation ion wind; S14, an ion wind concentration control unit, which is arranged at the outlet of the ion wind generating unit and is used to control the oxidizing ion concentration of the high-energy oxidizing ion wind. To make dynamic adjustments: ； in, is the concentration of oxidizing ions, is the time-varying function of the electric field strength, which comes from the electric field between the anode and cathode in the high-voltage electrode group. Represents the effective discharge area of ​​the high voltage electrode group, is the air flow rate passing through the ion wind generating unit per unit time, and is the start and end time of air passing through the ion wind generating unit, Indicates the aerodynamic correction coefficient, which is related to the instantaneous air velocity and air density Related, specifically expressed as: ； in, is the instantaneous air velocity, is the air density, is the viscosity coefficient of air; S15, an ion wind output unit, connected to the outlet end of the ion wind generating unit, used to transport the generated high-energy oxidizing ion wind to the primary reaction module through a pipeline, and the ion wind output unit is equipped with a pressure regulating device to maintain a stable flow of the high-energy oxidizing ion wind.

3. The odor treatment system of a garbage transfer station according to claim 2 is characterized in that: The S3 specifically includes: S31, the shell of the oxidation reaction device forms a closed reaction chamber, the closed reaction chamber is provided with a high-energy oxidation ion wind inlet and an odor inlet, the high-energy oxidation ion wind inlet is connected to the ion wind output unit, and the odor inlet is connected to the odor collection module; S32, a mixing flow unit, which is arranged inside the closed reaction chamber and includes a spiral guide structure and a diversion baffle, and is used to fully mix the high-energy oxidizing ion wind and the odor after they enter the closed reaction chamber; S33, a reaction catalytic unit, located in the central position of the closed reaction chamber, comprising a porous catalytic mesh and an active coating, wherein the porous catalytic mesh is used to increase the reaction surface area, and the active coating is composed of metal oxides and active ion materials to promote the oxidation decomposition reaction between high-energy oxidizing ion wind and odor molecules; S34, a reaction parameter control unit, which is arranged on the outer shell of the oxidation reaction device and includes a temperature control device and a pressure regulating valve, and is used to control the temperature and pressure in the reaction chamber; S35, a reaction product output unit is arranged at the outlet end of the oxidation reaction device shell, and transports the partially decomposed mixed gas generated by the oxidation reaction to the narrow pulse plasma deep processing module through a pipeline.

4. The odor treatment system of a garbage transfer station according to claim 3 is characterized in that: The S32 specifically includes: S321, spiral guide structure, arranged at the inlet area of ​​the closed reaction chamber, including a plurality of guide plates, the guide plates are arranged at a fixed guide angle Arranged in a spiral direction, high-energy oxidizing ion wind is guided to mix with odor along the spiral path: ； in, To fix the diversion angle, is the initial flow rate of gas mixing, is the mixed gas density of high-energy oxidizing ion wind and odor, is the dynamic viscosity coefficient of the mixed gas of high-energy oxidizing ion wind and odor; S322, a flow dividing plate, arranged in the middle area of ​​the closed reaction chamber, including multiple layers of evenly distributed flow dividing nets and separation channels, wherein the pore size of the flow dividing net is for: ； in, is the aperture of the diversion network, is the proportionality coefficient related to the mixing efficiency, is the volume flow of gas entering the diversion network per unit time, is the effective flow area of ​​the diversion network; S323, a gas flow balancing unit is arranged in the outlet area of ​​the closed reaction chamber. The gas flow balancing unit includes a plurality of flow balancing plates arranged in parallel. After the mixed gas passes through the diversion baffle, the flow velocity distribution is further balanced so that the mixed gas enters the reaction catalytic unit at a uniform flow velocity.

5. The odor treatment system of a garbage transfer station according to claim 3 is characterized in that: The S33 specifically includes: S331, a porous catalytic net is arranged in the center of the closed reaction chamber, and has a plurality of holes with a diameter of via: ； in, is the through hole diameter, is the number of through holes per unit area, is the catalytic surface area of ​​the porous catalytic mesh, is the effective cross-sectional area of ​​the porous catalytic mesh; S332, the active coating is composed of metal oxides and active ion materials, with a thickness of Coated on the inner wall surface of the porous catalytic mesh: ； in, is the thickness of the active coating, is the coating mass on the unit catalytic net, is the density of the active coating material, is the catalytic surface area of ​​the porous catalytic mesh; S333, catalytic net support structure, arranged at the periphery of the porous catalytic net, used to fix the position of the catalytic net, including an inner ring support frame and radial reinforcement ribs: ； in, is the number of reinforcement ribs, is the total pressure of the mixed gas flow, is the reinforcement bearing coefficient, is the length of the reinforcement, is the compressive strength of the reinforcement material; S334, gas channel unit, distributed around the porous catalytic net, guides the mixed gas of high-energy oxidizing ion wind and odor molecules.

6. The odor treatment system of a garbage transfer station according to claim 2, characterized in that: The S4 specifically includes: S41, high-voltage pulse power supply module, including a capacitor energy storage unit and a fast discharge unit, used to generate a nanosecond pulse high-voltage electric field, the fast discharge unit adjusts the pulse frequency , pulse width Realize dynamic generation of high energy electric field, pulse electric field intensity for: ； in, is the pulse electric field strength, is the time variation function of the pulse peak voltage, is the pulse duration, is the pulse voltage attenuation coefficient, is the distance between discharge electrodes; S42, a discharge electrode group, comprising a plurality of symmetrically arranged anodes and cathodes, wherein the anodes and cathodes are made of conductive materials, and a high temperature resistant insulating layer is provided on the surface of the discharge electrode group, and a non-uniform high energy electric field is formed between the electrodes to stimulate the dissociation and ionization reaction of molecules in the mixed gas; S43, a high-energy active particle generation module, which is arranged in the reaction area of ​​the discharge electrode assembly and is used to generate high-energy active particles through pulse discharge. The high-energy active particles include free radicals, ions and excited state molecules, and their concentration is: ； in, is the concentration of high-energy active particles, is the time-varying function of energy conversion efficiency, is the instantaneous value of pulse discharge power, is the attenuation coefficient of high-energy active particles, is the time-varying function of the high-energy active particle loss coefficient, It is the instantaneous value of the spatial range where high-energy active particles actually react with odor molecules. and is the start and end time of the reaction; S44, a gas flow control assembly is arranged at both ends of the high-energy active particle generation module to regulate the flow characteristics of the mixed gas in the reaction zone. The gas flow control assembly includes a flow regulating valve and a flow guide pipe, which are used to adjust the flow rate of the mixed gas so that the total residence time of the mixed gas in the reaction zone is for: ； in, is the total residence time of the mixed gas in the reaction zone, is the effective length of the reaction zone, is the flow rate adjustment factor, is the gas velocity attenuation coefficient, is the coordinate along the length of the reaction zone, is the lengthwise distribution of the mixed gas velocity; S45, a decomposition product collection module is arranged at the outlet end of the reaction zone to guide the decomposition product gas after being acted upon by the high-energy active particles to the auxiliary purification module.

7. The odor treatment system of a garbage transfer station according to claim 1, characterized in that: The S5 specifically includes: S51, a particle filter unit, arranged at the inlet end of the decomposition product gas, for filtering solid particles in the decomposition product gas, the particle filter unit comprising a multi-layer filter screen and a dynamic adjustment device, the pore size distribution of the multi-layer filter screen satisfies the following relationship: ； in, For the The pore size of the filter screen, is the minimum filter aperture, is the increment of the adjacent filter mesh apertures, is the number of the filter layer; S52, a harmful gas separation unit, including an adsorption module and a catalytic reaction module, is arranged downstream of the particle filter unit, and is used to separate harmful compounds in the decomposition product gas, wherein the adsorption module contains a multi-layer activated carbon adsorption material, and the specific surface area of ​​the activated carbon particles is Expressed as: ； in, is the specific surface area of ​​activated carbon, is the activated carbon mass, is the density of activated carbon, is the average diameter of activated carbon particles; The catalytic reaction module includes a metal oxide catalyst, the activity of which is measured by the catalytic efficiency express: ； in, is the catalytic efficiency, is the initial concentration of harmful gases entering the catalytic module, is the gas concentration after being treated by the catalytic module; S53, a gas uniform distribution unit is arranged at the outlet end of the harmful gas separation unit to balance the flow rate and distribution of the purified gas so that the purified gas enters the emission module at a stable flow rate.

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