An odor treatment system

Abstract

The utility model discloses a kind of stench treatment systems, belong to environmental management technical field.The stench treatment system includes: biological treatment unit, conveying device and adsorption unit, the inlet of biological treatment unit is communicated with stench, the outlet of adsorption unit is communicated with atmosphere, the outlet of biological treatment unit is communicated with the inlet of adsorption unit by the conveying device;Filler and microorganism attached to the filler are provided in the biological treatment unit;Active carbon adsorption material is provided in the adsorption unit.The stench treatment system is sequentially arranged biological treatment unit, conveying device and adsorption unit, and the stench is first degraded by microorganism in biological treatment unit, then purified by active carbon adsorption material in adsorption unit, remove various pollutants in stench, significantly improve purification effect, so that purified gas can be stably discharged up to standard, meet the needs of social development and environmental protection.

Description

Technical Field

[0001] This utility model belongs to the field of environmental governance technology, and in particular relates to an odor treatment system. Background Technology

[0002] Odor removal equipment for chemical and pharmaceutical wastewater treatment plants is a technical device used to treat malodorous gases generated during the treatment process. As a crucial component of chemical and pharmaceutical wastewater treatment systems, these plants produce significant amounts of odorous gases during the treatment process. The main components of these odorous gases are hydrogen sulfide, ammonia, and other odorous substances. A small number of these substances are inorganic compounds, while the majority are organic compounds, including low-molecular-weight fatty acids, amines, aldehydes, ketones, ethers, halogenated hydrocarbons, and aliphatic, aromatic, and heterocyclic compounds. These odorous substances not only pollute the atmosphere but also cause considerable distress to the surrounding environment and residents. Therefore, the application of odor removal equipment for chemical and pharmaceutical wastewater treatment plants is of paramount importance.

[0003] Current deodorization processes mainly include washing and absorption, adsorption, biodegradation, advanced oxidation, chemical oxidation, and thermal oxidation, each with different characteristics and applicable scope. However, due to the high odor concentration in chemical and pharmaceutical wastewater treatment plants, relying on a single deodorization method is insufficient to achieve satisfactory treatment results and cannot meet the needs of social development and environmental protection. Utility Model Content

[0004] This invention provides an odor treatment system, which aims to solve the problem that existing single deodorization methods are difficult to achieve good treatment results.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An odor treatment system includes: a biological treatment unit, a conveying device, and an adsorption unit. The inlet of the biological treatment unit is connected to the odor, the outlet of the adsorption unit is connected to the atmosphere, and the outlet of the biological treatment unit is connected to the inlet of the adsorption unit through the conveying device.

[0007] The biological treatment unit is equipped with packing material and microorganisms attached to the packing material;

[0008] The adsorption unit is equipped with activated carbon adsorption material.

[0009] Furthermore, the upper part of the adsorption unit is connected to a first steam pipe, and the bottom of the adsorption unit is connected to a storage tank. Steam enters the adsorption unit through the first steam pipe, and the storage tank is used to store the condensate formed by the steam in the first steam pipe.

[0010] Furthermore, it also includes a condenser and condensation piping, the condenser connecting the adsorption unit and the storage tank, and the condensation piping used to condense the condenser to form the condensate.

[0011] Furthermore, the storage tank is connected to the biological processing unit.

[0012] Furthermore, it also includes a preheater, the inlet of which is connected to the atmosphere and the outlet of which is connected to the adsorption unit. The preheater is used to heat the air and pass the hot air into the adsorption unit to dry the adsorption unit.

[0013] Furthermore, the preheater is also connected to a second steam pipeline for heating the preheater, and the preheater is also connected to the storage tank.

[0014] Furthermore, the adsorption unit is provided with at least two adsorption boxes, each containing activated carbon adsorption material. The at least two adsorption boxes are independently configured and are connected to the first steam pipeline, the condenser, and the preheater.

[0015] Furthermore, the condenser is connected to the conveying device.

[0016] Furthermore, the biological treatment unit includes a biological filter, in which the packing material and the microorganisms are installed, and the odor is connected to the bottom of the biological filter through an odor pipeline.

[0017] Furthermore, the biological treatment unit also includes a water tank and a water pump, and a spray head is provided on the upper part of the biological filter. The spray head and the water tank are connected through the water pump.

[0018] The advantages of this utility model compared with the prior art are:

[0019] This utility model discloses an odor treatment system. By sequentially setting up a biological treatment unit, a conveying device, and an adsorption unit, the odorous gas first undergoes degradation by microorganisms in the biological treatment unit, and then undergoes deep purification by activated carbon adsorption material in the adsorption unit. Compared with a single treatment process, this multi-stage treatment method can more comprehensively and effectively remove various pollutants from the odorous gas, significantly improving the purification effect and ensuring that the purified gas can be stably discharged in compliance with standards, meeting the needs of social development and environmental protection. The biological treatment unit, as a pretreatment stage, can initially purify the odorous gas, reducing its concentration and complexity, thus lessening the processing burden on the subsequent adsorption unit. It also prevents high-concentration odors from directly impacting the adsorption unit, causing rapid saturation or failure of the activated carbon, thereby extending the service life of the adsorption unit and enabling the entire system to operate stably for a long time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an odor treatment system provided in an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 This is a schematic diagram of Part A;

[0023] Figure 3 This is a schematic diagram of the structure of a biological filter provided in an embodiment of the present invention.

[0024] The labels for the attached figures are as follows:

[0025] 100. Odor;

[0026] 1. Biological treatment unit; 10. Plant water supply; 11. Packing material; 12. Biological filter; 121. Spray head; 13. Water tank; 14. Water pump;

[0027] 2. Conveying device;

[0028] 3. Adsorption unit; 30. Atmosphere; 31. First adsorption box; 32. Second adsorption box; 33. Emission chimney;

[0029] 4. First steam pipeline; 40. Plant area steam; 41. Steam network;

[0030] 5. Condenser; 50. Cooling water; 51. Condensate piping; 52. Circulating water system; 6. Storage tank; 61. To equalization tank; 62. Condensate transfer pump;

[0031] 7. Preheater; 71. Second steam pipeline; 72. Drying fan;

[0032] 8. Odor duct; 81. Filter; 82. Exhaust gas inlet valve. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1-3As shown, this utility model provides an odor treatment system, including: a biological treatment unit 1, a conveying device 2, and an adsorption unit 3. The inlet of the biological treatment unit 1 is connected to the odor 100, and the outlet of the adsorption unit 3 is connected to the atmosphere 30. The outlet of the biological treatment unit 1 is connected to the inlet of the adsorption unit 3 through the conveying device 2. The biological treatment unit 1 is provided with a packing material 11 and microorganisms attached to the packing material 11, and the adsorption unit 3 is provided with activated carbon adsorption material.

[0035] After being collected and summarized, the odor 100 first enters the filter 81 through the exhaust gas inlet valve 82. After filtering out dust particles, it enters the biological treatment unit 1. After being degraded by microorganisms, it is powered by the conveying device 2 to enter the adsorption unit 3 for deep purification treatment, and is then discharged into the atmosphere 30 through the emission chimney 33 in compliance with standards.

[0036] The odor treatment system provided by this utility model, through a biological treatment unit 1, a conveying device 2, and an adsorption unit 3 arranged sequentially, first degrades the odor 100 through microorganisms in the biological treatment unit 1, and then deeply purifies it through activated carbon adsorption material in the adsorption unit 3. Compared with a single treatment process, this multi-stage treatment method can more comprehensively and effectively remove various pollutants from the odor 100, significantly improving the purification effect and ensuring that the treated gas meets emission standards, satisfying the needs of social development and environmental protection. The biological treatment unit 1, as a pretreatment stage, can initially purify the odor 100, reducing its concentration and complexity, thus lessening the processing burden on the subsequent adsorption unit 3. It also prevents high-concentration odor 100 from directly impacting the adsorption unit 3, causing rapid saturation or even failure of the activated carbon, thereby extending the service life of the adsorption unit 3 and enabling the entire treatment system to operate stably for a long time.

[0037] The adsorption unit 3 is filled with granular activated carbon or activated carbon fiber adsorption material. The activated carbon has a limited adsorption capacity and needs to be replaced periodically. The replaced activated carbon also needs to be treated as hazardous waste, resulting in high operating costs. Therefore, this invention provides a desorption process for the adsorption unit 3, specifically, as follows: Figure 1 As shown, a first steam pipe 4 is connected to the upper part of the adsorption unit 3, and a storage tank 6 is connected to the bottom of the adsorption unit 3. Steam enters the adsorption unit 3 through the first steam pipe 4, and the storage tank 6 is used to store the condensate formed by the steam in the first steam pipe 4. After the activated carbon adsorption material is saturated, it is desorbed and regenerated using the steam in the first steam pipe 4, allowing the activated carbon to be reused. This greatly extends the service life of the activated carbon and reduces the cost caused by frequent replacement of activated carbon. At the same time, timely desorption and regeneration ensures that the activated carbon maintains good adsorption performance during operation, thereby improving the purification efficiency of the entire adsorption unit 3 for odor 100 and enabling the purified gas to be stably discharged in compliance with standards.

[0038] In steam desorption processes, steam needs to be properly treated to make rational use of resources, such as... Figure 1 As shown, a condenser 5 and a condensing pipe 51 are installed between the adsorption unit 3 and the storage tank 6. The condenser 5 connects the adsorption unit 3 and the storage tank 6, and the condensing pipe 51 condenses the steam discharged from the adsorption unit 3, improving condensation efficiency and reducing steam waste. The condensing pipe 51 is connected to the plant's cooling water 50, and the cooling water enters the condenser 5 to cool the steam discharged from the adsorption unit 3.

[0039] In the desorption process, steam enters the adsorption unit 3 from the top through the first steam pipeline 4 to heat the activated carbon. Then, the steam is led from the bottom of the adsorption unit 3 to the condenser 5, where it is condensed and recovered by low-temperature water supplied by cooling water 50 and condensation pipeline 51. The cooling water 50 and condensation pipeline 51 then enter the circulating water system 52 for recirculation. The solvent condensed in the condenser 5 enters the storage tank 6 and is periodically transported to the equalization tank 61 for wastewater treatment via the condensate transfer pump 62. There are two condensate transfer pumps 62, one in use and one on standby. The organic vapors that do not condense in the condenser 5 enter the conveying device 2 for re-adsorption.

[0040] After desorption in adsorption unit 3, the high temperature of the activated carbon adsorption material and the presence of a certain amount of moisture in the container will reduce the adsorption effect of the activated carbon adsorption material. Figure 1 As shown, a preheater 7 is connected to the bottom of the adsorption unit 3. The preheater 7 is connected to the atmosphere 30 through a drying fan 72. The drying fan 72 provides power to obtain fresh air. After being heated by the preheater 7, the activated carbon in the desorbed adsorption unit 3 is dried. The hot air can quickly remove the moisture in the adsorption unit 3, greatly improving the drying speed of the activated carbon adsorption material and enabling the adsorption unit 3 to recover its adsorption performance more quickly.

[0041] The heat source for preheater 7 can take many forms. For example, it can utilize the waste heat or residual heat in the first steam pipe 4 to heat the air. Another example is... Figure 1 As shown, the preheater 7 is connected to a second steam pipeline 71, which is connected to the plant steam 40. The plant steam 40 heats the preheater 7. At the same time, in order to properly handle the steam and make rational use of resources, the preheater 7 is also connected to a storage tank 6, which stores the condensate formed by the steam in the second steam pipeline 71.

[0042] To ensure the continuous operation of the adsorption unit 3 and improve the system's processing efficiency, the adsorption unit 3 is equipped with two relatively independent first adsorption chambers 31 and 32. Both the first adsorption chamber 31 and 32 contain activated carbon adsorption material and are connected to the first steam pipeline 4, the condenser 5, and the preheater 7. The first adsorption chamber 31 and 32 can perform adsorption and desorption operations separately. For example, while the first adsorption chamber 31 is performing adsorption, the second adsorption chamber 32 is simultaneously performing desorption and regeneration, thus achieving a continuous adsorption and desorption process and ensuring that the odor gas 100 can be continuously purified.

[0043] like Figure 2 The diagram shows the valve distribution of the first adsorption box 31, the second adsorption box 32, and other structures. By controlling the opening and closing of different valves, the adsorption boxes can be used alternately, as shown in Table 1.

[0044] Table 1. Switching status of adsorption, desorption, and drying valves in the adsorption unit.

[0045]

[0046]

[0047] It should be noted that this embodiment uses two adsorption boxes on one adsorption unit 3 as an example. In other implementations, three, four, five, etc., adsorption boxes can be set on one adsorption unit 3, simply by increasing the connection between the adsorption boxes, thereby enabling two or more adsorption boxes to work alternately. When treating high-concentration or high-volume odor 100, multiple adsorption boxes can be activated simultaneously for adsorption treatment, improving the processing capacity of the system; while when treating low-concentration or low-volume odor 100, only some adsorption boxes can be activated, reducing energy consumption and operating costs.

[0048] This invention discloses an activated carbon desorption and regeneration system. When the activated carbon becomes saturated with adsorption, it undergoes desorption and regeneration using hot steam. Based on design parameters such as gas flow rate and concentration, the adsorption unit 3 consists of multiple adsorption boxes, enabling real-time online desorption and drying. After the activated carbon becomes saturated with adsorption, it is heated using steam from the plant area 40, causing organic molecules to desorb from the activated carbon surface, thus achieving the purpose of activated carbon activation.

[0049] Preferably, the biological treatment unit 1 includes a biological filter 12, which is equipped with packing material 11 and microorganisms. After the odor 100 is collected and aggregated, it first enters the filter 81 through the exhaust gas inlet valve 82. After filtering out dust particles, it enters the bottom of the biological filter 12 through the odor pipeline 8. After entering from the bottom of the biological filter 12, the odor 100 needs to pass through the packing material 11 before it can be discharged. During this process, the odor 100 has sufficient contact and reaction with the microorganisms attached to the surface of the packing material 11, allowing the microorganisms enough time to degrade and transform the pollutants in the odor 100.

[0050] The filter 81 includes a primary filter and a secondary filter to filter particulate matter in the exhaust gas. After the odorous gas passes through the filter 81, the size of the particulate matter in the exhaust gas can be controlled to below 10μm, thereby effectively preventing the particulate matter in the exhaust gas from clogging the biological filter 12 and avoiding increasing the operating resistance of the system.

[0051] Filter 81 is connected to biological filter 12 via a pipe. Odor enters from the bottom of biological filter 12, moves upward, and is diverted through a guide pipe into the biological packing area. Packing material 11 is a composite material made of volcanic rock, bamboo charcoal, etc., which has a large specific surface area, resistance to acid and alkali corrosion, and is suitable for microbial growth. It also has advantages such as good water retention, resistance to decay, and easy biofilm formation. When odor 100 comes into contact with packing material 11, it is degraded by the microorganisms attached to the packing material 11. Through the metabolism of microorganisms, it is degraded into harmless compounds such as CO2, H2O, and organic acids, thereby removing pollutants. The effective residence time of odor 100 in contact with biological packing material 11 is ≥20s, and the filtration velocity is ≤0.08m / s, ensuring the biological deodorization effect. The overall deodorization effect of biological filter 12 can reach more than 85%.

[0052] The biological treatment unit 1 also includes a water tank 13 and a water pump 14. The water tank 13 is connected to the plant's water supply 10. The water pump 14 provides power to transport the water and nutrient solution in the water tank 13 to the spray area through pipelines. The circulating water system can provide suitable humidity and nutrients for the growth and reproduction of microorganisms, and can regulate parameters such as temperature and pH value of the circulating water to maintain the optimal environment required by microorganisms. There are two water pumps 14, one in use and one on standby. Multiple spray heads 121 are installed on the upper part of the biological filter 12. The spray heads 121 and the water tank 13 are connected through the water pump 14. The spray heads 121 use 120-degree hollow cone nozzles to allow the odor 100 to come into more full contact with the water, improving the purification effect. Excess water in the biological filter 12 is transported to the storage tank 6 through pipelines and then sent to the equalization tank 61 for treatment.

[0053] The main body of the biological filter 12 is equipped with temperature detection and heating devices. When the temperature is low in winter, the deodorization system uses an electric heating system to heat the biological deodorization circulating liquid to maintain heat balance, ensuring that the temperature of the gas entering the biological deodorization section is suitable for the growth and reproduction of microorganisms in the deodorization system. The main body of the biological filter 12 is made of corrosion-resistant fiberglass. A baffle demister is installed at the top outlet. After biological deodorization, the gas is dehumidified by the demister and then enters the conveying device 2. The conveying device 2 provides power to enter the adsorption unit 3 for deep purification treatment.

[0054] The conveying device 2 includes an adsorption fan. It is understood that in other embodiments, the conveying device 2 may also be a compressor, a vacuum pump, a blower, etc.

[0055] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An odor treatment system, characterized in that, include: The biological treatment unit comprises a biological treatment unit, a conveying device, and an adsorption unit. The inlet of the biological treatment unit is connected to the odor gas, the outlet of the adsorption unit is connected to the atmosphere, and the outlet of the biological treatment unit is connected to the inlet of the adsorption unit through the conveying device. The biological treatment unit is equipped with packing material and microorganisms attached to the packing material; The adsorption unit is equipped with activated carbon adsorption material; The upper part of the adsorption unit is connected to a first steam pipe, and the bottom of the adsorption unit is connected to a storage tank. Steam enters the adsorption unit through the first steam pipe, and the storage tank is used to store the condensate formed by the steam in the first steam pipe.

2. The odor treatment system according to claim 1, characterized in that, It also includes a condenser and condensation piping, the condenser connecting the adsorption unit and the storage tank, and the condensation piping used to condense the condenser to form the condensate.

3. The odor treatment system according to claim 1, characterized in that, The storage tank is connected to the biological processing unit.

4. The odor treatment system according to claim 2, characterized in that, It also includes a preheater, the inlet of which is connected to the atmosphere and the outlet of which is connected to the adsorption unit. The preheater is used to heat the air and pass the hot air into the adsorption unit to dry the adsorption unit.

5. The odor treatment system according to claim 4, characterized in that, The preheater is also connected to a second steam pipeline for heating the preheater, and the preheater is also connected to the storage tank.

6. The odor treatment system according to claim 4, characterized in that, The adsorption unit is provided with at least two adsorption boxes, each containing activated carbon adsorption material. The at least two adsorption boxes are independently configured and are connected to the first steam pipeline, the condenser, and the preheater.

7. The odor treatment system according to claim 2, characterized in that, The condenser is connected to the conveying device.

8. The odor treatment system according to claim 1, characterized in that, The biological treatment unit includes a biological filter, in which the packing material and the microorganisms are installed, and the odor is connected to the bottom of the biological filter through an odor pipeline.

9. The odor treatment system according to claim 8, characterized in that, The biological treatment unit also includes a water tank and a water pump. The upper part of the biological filter is equipped with a spray head, and the spray head and the water tank are connected through the water pump.

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