Waste gas treatment system

Abstract

The utility model relates to the technical field of sewage treatment, and provides a waste gas treatment system which comprises a gas inlet device, a degradation device and a water source supply device, the degradation device is provided with a cavity, and the water source supply device is communicated with the cavity; the cavity is provided with a first degradation layer, the gas inlet device is communicated with the cavity so as to introduce waste gas into the first degradation layer, and the first degradation layer is used for degrading hydrophilic pollutants in the waste gas; the cavity is provided with a second degradation layer, the second degradation layer and the first degradation layer are arranged in a spaced mode in the vertical direction, and the second degradation layer is located on the upper side of the first degradation layer; the second degradation layer is used for degrading hydrophobic pollutants in the gas penetrating out of the first degradation layer. According to the waste gas deodorization device, hydrophilic pollutants and hydrophobic pollutants in waste gas can be degraded, and the deodorization effect of the waste gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an exhaust gas treatment system. Background Art

[0002] Sewage treatment is a mandatory requirement of the state and an inevitable requirement with the improvement of people's living standards. In the treatment of wastewater from enterprises such as food and grain processing and people's daily life, the role of microorganisms is indispensable. As bacteria decompose sewage, a large amount of gases with strong odors such as biogas, hydrogen sulfide, and mercaptan will be generated in the sewage system. If these gases, especially harmful gases such as hydrogen sulfide, are directly discharged into the external environment, it will seriously affect people's physical health and mental well-being. Therefore, during the sewage treatment process, it is also necessary to further treat the sewage exhaust gas.

[0003] Most of the existing exhaust gas treatment systems use a microbial deodorant solution to react with the exhaust gas to degrade harmful and odorous substances in the sewage exhaust gas. However, this method can only degrade water-soluble harmful substances in the exhaust gas, and cannot effectively degrade water-insoluble harmful substances, or the degradation effect is poor, resulting in the discharged gas not meeting the standards; or, an additional device for deodorizing hydrophobic harmful substances needs to be added to the sewage exhaust gas treatment system, increasing the number of processes and the complexity of the pipelines, and reducing the efficiency of exhaust gas treatment. Summary of the Utility Model

[0004] This application aims to provide an exhaust gas treatment system, which at least solves the problems that the current exhaust gas treatment system has a poor deodorization effect on exhaust gas and is difficult to ensure the deodorization efficiency of exhaust gas.

[0005] The utility model provides an exhaust gas treatment system, including: an intake device, a degradation device, and a water source supply device;

[0006] The degradation device has a cavity, and the water source supply device is communicated with the cavity;

[0007] The cavity is provided with a first degradation layer, and the intake device is communicated with the cavity to introduce exhaust gas into the first degradation layer, and the first degradation layer is used for degrading hydrophilic pollutants in the exhaust gas;

[0008] The cavity is provided with a second degradation layer, the second degradation layer is arranged at an interval with the first degradation layer in the vertical direction, and the second degradation layer is located above the first degradation layer; the second degradation layer is used for degrading hydrophobic pollutants in the gas passing through the first degradation layer.

[0009] An exhaust gas treatment system provided by the present utility model, the first degradation layer includes a filter material layer and a first microbial film, the filter material layer is used for the exhaust gas to pass through, the first microbial film is arranged on the surface of the filter material layer, and the first microbial film is used for degrading reaction with hydrophilic pollutants in the exhaust gas.

[0010] An exhaust gas treatment system provided by the present utility model, the water source supply device includes a circulating water supply component, the filter material layer is provided with a microbial slurry layer, and the circulating water supply component is communicated with the cavity; the circulating water supply component is used for spraying circulating water on the microbial slurry layer to form the first microbial film on the surface of the filter material layer.

[0011] An exhaust gas treatment system provided by the present utility model, the second degradation layer includes an adsorption layer and a second microbial film, the adsorption layer is used for adsorbing hydrophobic pollutants in the exhaust gas, the second microbial film is arranged on the surface of the adsorption layer, and the second microbial film is used for degrading reaction with hydrophobic pollutants in the exhaust gas.

[0012] An exhaust gas treatment system provided by the present utility model, the adsorption layer is a volcanic rock layer.

[0013] An exhaust gas treatment system provided by the present utility model, the water source supply device includes an irrigation water supply component, the irrigation water supply component is communicated with the top of the cavity, and the irrigation water supply component is used for intermittently irrigating the adsorption layer and the second microbial film to maintain the activity of the hydrophobic pollutants and the second microbial film.

[0014] An exhaust gas treatment system provided by the present utility model, the circulating water supply component includes a circulating pump, a water inlet pipe and a drain pipe, the degradation device is provided with a first water inlet and a first water outlet, the first water inlet is located on the upper side of the first degradation layer, the first water outlet is located on the lower side of the first degradation layer, the water inlet pipe is communicated with the first water inlet, the drain pipe is communicated with the first water outlet, and the circulating pump is arranged on the drain pipe to discharge the waste in the first degradation layer.

[0015] An exhaust gas treatment system provided by the present utility model, the degradation device is provided with a second water inlet and a second water outlet, the second water inlet is located on the upper side of the second degradation layer, and the second water outlet is located on the lower side of the second degradation layer;

[0016] The irrigation water supply component includes an irrigation valve, the water inlet end of the irrigation valve is used for introducing water source, the water outlet end of the irrigation valve is communicated with the second water inlet through a water inlet pipeline; the second water outlet is used for discharging the waste in the second degradation layer.

[0017] An exhaust gas treatment system provided by the present utility model, wherein the intake device includes a fan and an intake pipeline. The fan is arranged on the intake pipeline. One end of the intake pipeline communicates with the bottom of the cavity, and the other end of the intake pipeline is used for introducing the exhaust gas.

[0018] An exhaust gas treatment system provided by the present utility model further includes a control cabinet, which is communicatively connected to the intake device, the degradation device, and the water source supply device respectively;

[0019] The control cabinet is used to input configuration parameters to control the working states of the intake device, the degradation device, and the water source supply device respectively.

[0020] The present utility model provides an exhaust gas treatment system. The degradation device has a cavity, and the water source supply device is communicated with the cavity to introduce water source into the cavity, so as to provide a good living environment for the microbial colonies for degradation in the cavity; the cavity is provided with a first degradation layer, and the intake device is communicated with the cavity to introduce the exhaust gas into the first degradation layer. When the exhaust gas passes through the first degradation layer, the first degradation layer can degrade the hydrophilic pollutants in the exhaust gas; meanwhile, the cavity is provided with a second degradation layer, and the second degradation layer is arranged at an interval in the vertical direction from the first degradation layer, and the second degradation layer is located above the first degradation layer. After the exhaust gas is treated by the first degradation layer, it floats up to the second degradation layer, and the second degradation layer can further degrade the hydrophobic pollutants in the exhaust gas, thereby improving the deodorization effect of the exhaust gas. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the exhaust gas treatment system provided by the present utility model.

[0023] Reference Signs:

[0024] 1. Intake device; 11. Fan; 12. Intake pipeline;

[0025] 2. Degradation device; 21. First degradation layer; 22. Second degradation layer; 211. First filter support plate; 221. Second filter support plate; 201. Exhaust port;

[0026] 3. Water source supply device; 31. Circulating water supply component; 32. Irrigation water supply component; 311. Water inlet pipe; 312. Sprinkler head; 313. Circulation pump; 314. Drain pipe; 321. Irrigation valve; 322. Water inlet pipeline; 323. Spraying head. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] The following will be combined with Figure 1 to describe in detail the waste gas treatment system provided by the embodiments of the present utility model through specific embodiments and their application scenarios.

[0030] As Figure 1 shown, the present utility model provides a waste gas treatment system, including: an intake device 1, a degradation device 2 and a water source supply device 3.

[0031] The degradation device 2 has a cavity, and the water source supply device 3 is communicated with the cavity.

[0032] The cavity is provided with a first degradation layer 21. The intake device 1 is communicated with the cavity to introduce waste gas into the first degradation layer 21, and the first degradation layer 21 is used for degrading the hydrophilic pollutants in the waste gas.

[0033] The cavity is provided with a second degradation layer 22. The second degradation layer 22 is arranged at an interval with the first degradation layer 21 in the vertical direction, and the second degradation layer 22 is located above the first degradation layer 21. The second degradation layer 22 is used for degrading the hydrophobic pollutants in the gas passing through the first degradation layer 21.

[0034] It can be understood that as Figure 1As shown in the figure, the degradation device 2 is cylindrical to form a cavity inside. The material of the degradation device 2 can be a vinyl resin fiberglass inner liner. Optionally, the diameter of the degradation device 2 is 2.0 m and the height is 5.0 m. A biological trickling filter is formed at the bottom of the cavity. The biological trickling filter includes a first degradation layer 21. The first degradation layer 21 is a microbial degradation layer, which degrades and separates hydrophilic pollutants in the waste gas by utilizing the degradation effect of microorganisms. The water source supply device 3 is connected to the bottom of the cavity to introduce tap water into the first degradation layer 21 to maintain the activity of the microorganisms in the first degradation layer 21.

[0035] As Figure 1 shown, the present utility model further includes an air inlet device 1. An air inlet is provided at the bottom of the degradation device 2. The air inlet device 1 is connected to the bottom of the cavity through the air inlet to introduce the waste gas to be treated into the biological trickling filter.

[0036] After the waste gas to be treated enters the cavity, it passes through the first degradation layer 21 from bottom to top. When the waste gas passes through the first degradation layer 21, the hydrophilic pollutants in the waste gas are absorbed into the first degradation layer 21 and become the substances required for the metabolism of the microorganisms in the first degradation layer 21. Finally, the hydrophilic pollutants are degraded into harmless substances such as inorganic salts.

[0037] The microorganisms in the first degradation layer 21 can be Thiobacillus. Hydrophilic pollutants in the waste gas, such as hydrogen sulfide, can be degraded by Thiobacillus into harmless sulfates. The microorganisms in the first degradation layer 21 can also be nitrifying bacteria. Hydrophilic pollutants in ammonia can be degraded by nitrifying bacteria into harmless nitrates.

[0038] Further, a second degradation layer 22 is also provided in the cavity. The second degradation layer 22 is provided at the top of the cavity. The second degradation layer 22 is located above the first degradation layer 21. The second degradation layer 22 also utilizes the degradation effect of microorganisms to remove the odor-causing organic substances in the waste gas. The second degradation layer 22 mainly degrades the hydrophobic pollutants in the waste gas. Optionally, the microorganisms used for degradation in the second degradation layer 22 can be anaerobic bacteria and sulfur-oxidizing bacteria, etc.

[0039] The gas treated by the first degradation layer 21 floats up to the second degradation layer 22. The second degradation layer 22 can adsorb and degrade the hydrophobic pollutants in the gas to perform secondary degradation treatment on the waste gas.

[0040] Similarly, the water source supply device 3 is also connected to the top of the cavity to introduce water source into the second degradation layer 22. Sufficient water source can provide a good living environment for the colonies used for degradation in the second degradation layer 22, thereby ensuring the deodorization effect of the waste gas.

[0041] The degradation of exhaust gas is the result of the synergistic action of multiple microorganisms. After the microorganisms form stable colonies, they not only have a good treatment effect on exhaust gas with complex components, but also have strong shock load resistance.

[0042] It should be noted that the present utility model does not limit the types of microbial colonies for degradation in the first degradation layer 21 and the second degradation layer 22.

[0043] The present utility model provides an exhaust gas treatment system. The degradation device 2 has a cavity, and the water source supply device 3 is communicated with the cavity to introduce water source into the cavity, so as to provide a good living environment for the microbial colonies for degradation in the cavity; the cavity is provided with a first degradation layer 21, and the air inlet device 1 is communicated with the cavity to introduce exhaust gas into the first degradation layer 21. When the exhaust gas passes through the first degradation layer 21, the first degradation layer 21 can degrade the hydrophilic pollutants in the exhaust gas; at the same time, the cavity is provided with a second degradation layer 22, and the second degradation layer 22 is arranged at an interval with the first degradation layer 21 in the vertical direction, and the second degradation layer 22 is located above the first degradation layer 21. After the exhaust gas is treated by the first degradation layer 21, it floats up to the second degradation layer 22, and the second degradation layer 22 can further degrade the hydrophobic pollutants in the exhaust gas, thereby improving the deodorization effect of the exhaust gas.

[0044] Specifically, as Figure 1 shown, the first degradation layer 21 includes a filter material layer and a first microbial film. The filter material layer is used for the exhaust gas to pass through, and the first microbial film is arranged on the surface of the filter material layer, and the first microbial film is used for degrading reaction with the hydrophilic pollutants in the exhaust gas.

[0045] It can be understood that the filter material layer is made of materials with small pores. The material of the filter material layer can be a PP material filter screen or gravel filler, etc. The first microbial film adheres to the surface of the filter material layer. The filter material layer can provide a support for the microbial colonies for degradation in the first microbial film. The filter material layer has the characteristics of being light and porous, and is a good carrier for the growth and reproduction of the microbial colonies for degradation.

[0046] After the exhaust gas enters the cavity, it passes through the filter material layer from bottom to top. The hydrophilic pollutants in the exhaust gas are absorbed by the first microbial film and degraded into harmless substances by the first microbial film.

[0047] Furthermore, as Figure 1 shown, the water source supply device 3 includes a circulating water supply component 31. The filter material layer is provided with a microbial slurry layer, and the circulating water supply component 31 is communicated with the cavity. The circulating water supply component 31 is used for performing circulating water spraying on the microbial slurry layer to form a first microbial film on the surface of the filter material layer.

[0048] It can be understood that, as Figure 1As shown, the water outlet end of the circulating water supply component 31 is in communication with the cavity, and the water outlet end of the circulating water supply component 31 is located above the first degradation layer 21. The circulating water supply component 31 is used to perform circulating water spraying on the first degradation layer 21 to provide an ideal humidity environment for the microbial slurry layer. Specifically, the microbial slurry layer can be a slurry of degradation strains cultured in an oxidation pond. The microbial slurry layer is placed on the filter material layer. After the microbial slurry layer is sprayed with circulating water, a first microbial film is formed on the surface of the filter material layer.

[0049] After the waste gas enters the cavity, it passes through the filter material layer and the first microbial film from bottom to top. The first microbial film reacts with the hydrophilic pollutants in the waste gas, so that most of the harmful substances in the waste gas can be degraded.

[0050] Furthermore, as Figure 1 shown, the second degradation layer 22 includes an adsorption layer and a second microbial film. The adsorption layer is used to adsorb the hydrophobic pollutants in the waste gas, and the second microbial film is arranged on the surface of the adsorption layer and is used to react with the hydrophobic pollutants in the waste gas for degradation.

[0051] It can be understood that when the degradation of the hydrophilic pollutants in the waste gas is completed, the waste gas floats from the first degradation layer 21 to the second degradation layer 22. A first filter screen support plate 211 and a second filter screen support plate 221 are provided in the degradation device 2. The first filter screen support plate 211 is used to support the first degradation layer 21. The second filter screen support plate 221 is used to support the second degradation layer 22.

[0052] The second degradation layer 22 includes an adsorption layer and a second microbial film. The adsorption layer is made of a porous material, such as activated carbon and molecular sieve. When the waste gas passes through the adsorption layer, an adsorption phenomenon will occur, and the hydrophobic pollutants in the waste gas can be adsorbed in the pores of the adsorption layer.

[0053] The second microbial film is arranged on the surface of the adsorption layer and reacts with the hydrophobic pollutants biologically, so that the hydrophobic pollutants in the waste gas are degraded.

[0054] As Figure 1 shown, an exhaust port 201 is provided at the top of the degradation device 2. When the second microbial film degrades the hydrophobic pollutants in the waste gas, the waste gas becomes harmless gas meeting the emission standards. The harmless gas is discharged to the outside from the exhaust port 201.

[0055] Preferably, the adsorption layer is a volcanic rock layer.

[0056] It can be understood that volcanic rock is often used as a filter material in water treatment and air purification, and can also be used as an adsorbent in industry. Volcanic rock is a porous rock, and its porous structure gives it a large specific surface area and porosity, enabling it to adsorb chemical substances and particulate matter.

[0057] In this embodiment, the volcanic rock layer can adsorb hydrophobic pollutants in the waste gas. Moreover, when the water supply device 3 supplies sufficient water, the volcanic rock layer can provide a good reproduction temperature and humidity for the indigenous microorganisms in the waste gas, so that the indigenous microorganisms remain active, facilitating the full degradation reaction between the second microbial film and the hydrophobic pollutants in the waste gas.

[0058] As Figure 1 shown, the water supply device 3 includes an irrigation water supply component 32. The irrigation water supply component 32 communicates with the top of the cavity, and the irrigation water supply component 32 is used to intermittently irrigate the adsorption layer and the second microbial film to maintain the activity of the hydrophobic pollutants and the second microbial film.

[0059] It can be understood that the irrigation water supply component 32 communicates with the top of the cavity. The water outlet end of the irrigation water supply component 32 is located above the second degradation layer 22 to introduce water source into the second degradation layer 22.

[0060] Thus, the hydrophobic pollutants adsorbed in the adsorption layer can remain active in the adsorption layer. In addition, the microbial slurry on the surface of the adsorption layer generates a second microbial film on the surface of the adsorption layer when encountering water.

[0061] Specifically, as Figure 1 shown, the circulating water supply component 31 includes a circulating pump 313, a water inlet pipe 311, and a drain pipe 314. The degradation device 2 is provided with a first water inlet and a first water outlet. The first water inlet is located above the first degradation layer 21, and the first water outlet is located below the first degradation layer 21. The water inlet pipe 311 communicates with the first water inlet, and the drain pipe 314 communicates with the first water outlet. The circulating pump 313 is arranged on the drain pipe 314 to discharge the waste in the first degradation layer 21.

[0062] It can be understood that the water inlet pipe 311 is used to communicate with the municipal water supply pipeline. The first water inlet is located above the first degradation layer 21. The water inlet pipe 311 communicates with the first water inlet. As Figure 1 shown, a plurality of spray heads 312 are provided at the end of the water inlet pipe 311. Each spray head 312 communicates with the water inlet pipe 311, and the spraying end of each spray head 312 faces the first degradation layer 21. The plurality of spray heads 312 are arranged at intervals in the horizontal direction to uniformly spray the first degradation layer 21.

[0063] Further, the degradation device 2 is further provided with a first water outlet. The first water outlet is located on the lower side of the first degradation layer 21. One end of the drain pipe 314 is communicated with the first water outlet, and the other end is communicated with the waste water tank. The circulation pump 313 is arranged on the drain pipe 314. After the spray head 312 sprays the first degradation layer 21, the tap water can wash out the degradation waste and dead microorganisms in the first degradation layer 21. The waste water with degradation waste and dead microorganisms flows downwards to the first water outlet. The circulation pump 313 is used to quantitatively and continuously transport the waste gas water from the drain pipe 314 to the waste water tank, so as to ensure the balance state of the microorganisms in the first degradation layer 21.

[0064] Further, the degradation device 2 is provided with a second water inlet and a second water outlet. The second water inlet is located on the upper side of the second degradation layer 22, and the second water outlet is located on the lower side of the second degradation layer 22.

[0065] The irrigation water supply component 32 includes an irrigation valve 321. The water inlet end of the irrigation valve 321 is used to introduce water source, and the water outlet end of the irrigation valve 321 is communicated with the second water inlet through a water inlet pipeline 322. The second water outlet is used to discharge the waste in the second degradation layer 22.

[0066] It can be understood that the water inlet end of the irrigation valve 321 is used to communicate with the municipal water supply pipeline. The second water inlet is located on the upper side of the second degradation layer 22. The water outlet end of the irrigation valve 321 is communicated with the second water inlet through a water inlet pipeline 322. As Figure 1 shown, a plurality of spray heads 323 are provided at the end of the water inlet pipeline 322. Each spray head 323 is communicated with the water inlet pipeline 322, and the spraying end of each spray head 323 faces the second degradation layer 22. The plurality of spray heads 323 are arranged at intervals in the horizontal direction in turn to uniformly irrigate the second degradation layer 22.

[0067] By arranging the irrigation valve 321 in the irrigation water supply component 32, it can ensure that the plurality of spray heads 323 intermittently irrigate the second degradation layer 22, so as to maintain the activity of the second microbial film and hydrophobic pollutants in the second degradation layer 22 and ensure sufficient degradation reaction.

[0068] Further, the degradation device 2 is further provided with a second water outlet. The second water outlet is located on the lower side of the second degradation layer 22. After the spray head 323 sprays the second degradation layer 22, the tap water can wash out the waste in the second degradation layer 22. The waste water with waste flows out of the degradation device 2 from the second water outlet from top to bottom.

[0069] In some embodiments, the air inlet device 1 includes a fan 11 and an air inlet pipeline 12. The fan 11 is arranged on the air inlet pipeline 12. One end of the air inlet pipeline 12 is communicated with the bottom of the cavity, and the other end of the air inlet pipeline 12 is used to introduce waste gas.

[0070] It is understandable that, as Figure 1 shown, one end of the intake pipeline 12 is connected to the cavity and is located below the first degradation layer 21. The other end of the intake pipeline 12 is used to introduce the waste gas to be treated. A fan 11 is provided in the intake pipeline 12. Under the action of the fan 11, the waste gas to be treated is discharged from the intake pipeline 12 into the cavity. Optionally, the material of the intake pipeline 12 can be fiberglass.

[0071] Furthermore, the present utility model further includes a control cabinet. The control cabinet is respectively communicatively connected to the intake device 1, the degradation device 2, and the water source supply device 3.

[0072] The control cabinet is used to input configuration parameters to respectively control the working states of the intake device 1, the degradation device 2, and the water source supply device 3.

[0073] It is understandable that there is an important internal relationship between the activity states of the microorganisms in the first microbial membrane and the second microbial membrane and factors such as temperature, pH value, and nutrients. The control cabinet controls each condition within an appropriate range through reasonable parameter design to ensure the activity in the first microbial membrane and the second microbial membrane.

[0074] Meanwhile, the control cabinet is respectively electrically connected to the intake device 1, the degradation device 2, and the water source supply device 3, so that the user can directly operate the control cabinet to realize the control of the working states of each sub-component in the intake device 1, the degradation device 2, and the water source supply device 3.

[0075] In some embodiments, to ensure the liquid level of the biological trickling filter, a liquid level gauge is provided in the cavity. A water replenishing valve is provided on the water inlet pipe 311. The liquid level gauge is electrically connected to the control cabinet, and the control cabinet is connected to the water replenishing valve. The control cabinet can control the opening and closing of the water replenishing valve according to the liquid level information detected by the liquid level gauge, so as to timely control the circulating water supply assembly 31 to introduce sufficient water source into the biological trickling filter when the liquid level of the biological trickling filter is too low, to ensure the activity of the first microbial membrane.

[0076] In addition, a pressure pump, a thermometer, a barometer, a water meter, a solenoid valve, etc. are also provided in the waste gas treatment system and are used in cooperation with the above-mentioned devices. These belong to the prior art and will not be elaborated here.

[0077] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An exhaust gas treatment system, characterized in that, Comprising: An intake device, a degradation device, and a water source supply device; The degradation device has a cavity, and the water source supply device is communicated with the cavity; The cavity is provided with a first degradation layer, and the intake device is communicated with the cavity to introduce waste gas into the first degradation layer, and the first degradation layer is used for degrading hydrophilic pollutants in the waste gas; The cavity is provided with a second degradation layer, the second degradation layer is arranged at an interval with the first degradation layer in the vertical direction, and the second degradation layer is located above the first degradation layer; the second degradation layer is used for degrading hydrophobic pollutants in the gas passing through the first degradation layer.

2. The exhaust gas treatment system according to claim 1, wherein The first degradation layer includes a filter layer and a first microbial film, the filter layer is used for the waste gas to pass through, the first microbial film is arranged on the surface of the filter layer, and the first microbial film is used for degrading reaction with hydrophilic pollutants in the waste gas.

3. The exhaust gas treatment system according to claim 2, characterized in that, The water source supply device includes a circulating water supply component, the filter layer is provided with a microbial slurry layer, and the circulating water supply component is communicated with the cavity; the circulating water supply component is used for spraying circulating water on the microbial slurry layer to form the first microbial film on the surface of the filter layer.

4. The exhaust gas treatment system according to claim 1, characterized in that The second degradation layer includes an adsorption layer and a second microbial film, the adsorption layer is used for adsorbing hydrophobic pollutants in the waste gas, the second microbial film is arranged on the surface of the adsorption layer, and the second microbial film is used for degrading reaction with hydrophobic pollutants in the waste gas.

5. The exhaust gas treatment system according to claim 4, wherein The adsorption layer is a volcanic rock layer.

6. The exhaust gas treatment system according to claim 4, characterized in that, The water source supply device includes an irrigation water supply component, the irrigation water supply component is communicated with the top of the cavity, and the irrigation water supply component is used for intermittently irrigating the adsorption layer and the second microbial film to maintain the activity of the hydrophobic pollutants and the second microbial film.

7. The exhaust gas treatment system according to claim 3, characterized in that, The circulating water supply component includes a circulating pump, a water inlet pipe and a drain pipe, the degradation device is provided with a first water inlet and a first water outlet, the first water inlet is located above the first degradation layer, the first water outlet is located below the first degradation layer, the water inlet pipe is communicated with the first water inlet, the drain pipe is communicated with the first water outlet, and the circulating pump is arranged on the drain pipe to discharge the waste in the first degradation layer.

8. The exhaust gas treatment system according to claim 6, characterized in that, The degradation device is provided with a second water inlet and a second water outlet, the second water inlet is located above the second degradation layer, and the second water outlet is located below the second degradation layer; The irrigation water supply component includes an irrigation valve, the water inlet end of the irrigation valve is used for introducing water source, and the water outlet end of the irrigation valve is communicated with the second water inlet through a water inlet pipeline; the second water outlet is used for discharging the waste in the second degradation layer.

9. The exhaust gas treatment system according to claim 3, characterized in that, The intake device includes a fan and an intake pipeline, the fan is arranged on the intake pipeline, one end of the intake pipeline is communicated with the bottom of the cavity, and the other end of the intake pipeline is used for introducing the waste gas.

10. The exhaust gas treatment system according to any one of claims 1-9, characterized in that, It further includes a control cabinet, and the control cabinet is respectively communicatively connected with the intake device, the degradation device and the water source supply device; The control cabinet is used to input configuration parameters to respectively control the working states of the air intake device, the degradation device, and the water source supply device.

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