Energy-saving device for treating low-concentration malodorous waste gas

Abstract

The utility model discloses an energy-saving device for treating low-concentration foul waste gas, which belongs to the technical field of waste gas treatment and comprises a control system and a waste gas inlet, a gas chromatography-mass spectrometry instrument is arranged at the waste gas inlet, and a pipeline diverter valve is arranged behind the gas chromatography-mass spectrometry instrument. The pipeline diverter valve is connected with a first pipeline and a second pipeline, the first pipeline is connected with a biological filter tank, the second pipeline is connected with an activated carbon adsorption tank, a connecting pipeline is arranged between the biological filter tank and the activated carbon adsorption tank, and a switch valve is arranged on the connecting pipeline. A photocatalytic oxidation pond is connected behind the activated carbon adsorption pond and is connected with a discharge outlet. Through the arrangement of the gas chromatography-mass spectrometry instrument and the pipeline diverter valve, accurate analysis and directional treatment of waste gas components are realized, and the waste gas components monitored in real time can be diverted to the most suitable treatment unit, so that the treatment efficiency and the energy-saving effect are improved to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and in particular relates to an energy-saving device for treating low-concentration malodorous waste gas. Background Art

[0002] In traditional waste gas treatment devices, most of them use high-energy consumption treatment devices for high-concentration waste gas. These treatment devices cause great energy waste for treating low-concentration malodorous waste gas. Traditional waste gas treatment systems often lack the ability to monitor and accurately analyze the composition of waste gas in real time, resulting in the inability to carry out targeted treatment of waste gas pollutants with different components. Secondly, traditional systems often use a single waste gas treatment technology, such as simple adsorption or chemical oxidation methods, which have limited treatment efficiency and are not comprehensive enough. Traditional systems also have a certain degree of waste and high consumption in energy utilization and operating costs, and have failed to fully achieve the goal of energy conservation and emission reduction. In short, traditional waste gas treatment technology has many problems such as low waste gas treatment efficiency, high energy consumption, and inconvenient operation and management, and new technical solutions are urgently needed to solve them. Summary of the invention

[0003] In order to solve the above-mentioned problems, the utility model discloses an energy-saving device for treating low-concentration malodorous waste gas. By arranging a gas chromatography-mass spectrometry instrument and a pipeline diverter valve at the waste gas inlet, accurate analysis and directional treatment of the waste gas components can be achieved. This means that the system can divert the waste gas to the most suitable treatment unit according to the waste gas components monitored in real time, thereby maximizing the treatment efficiency and energy-saving effect.

[0004] In order to achieve the above purpose, the specific technical solution of this application is as follows:

[0005] An energy-saving device for treating low-concentration malodorous waste gas, comprising a control system, a waste gas inlet, the waste gas inlet is provided with a gas chromatography-mass spectrometry instrument, a pipeline diverter valve is provided behind the gas chromatography-mass spectrometry instrument, the pipeline diverter valve is connected to a first pipeline and a second pipeline, the first pipeline is connected to a biological filtration tank, the second pipeline is connected to an activated carbon adsorption tank, a connecting pipeline is provided between the biological filtration tank and the activated carbon adsorption tank, a switch valve is provided on the connecting pipeline, a photocatalytic oxidation tank is connected behind the activated carbon adsorption tank, and the photocatalytic oxidation tank is connected to a discharge port.

[0006] Based on the above technical features, further, a gas chromatography-mass spectrometry instrument is provided before the discharge port.

[0007] Based on the above technical features, further, the biological filtration tank includes a filler layer, a biofilm is attached to the filler layer, and the biofilm is used to degrade organic pollutants in the exhaust gas.

[0008] Based on the above technical features, further, the activated carbon adsorption tank includes an activated carbon filler with a large pore size, and the activated carbon filler can effectively adsorb organic matter and odorous substances in the exhaust gas.

[0009] Based on the above technical features, preferably, the photocatalytic oxidation tank is provided with an ultraviolet light source, which can excite the photocatalyst to produce active oxygen, thereby oxidizing the pollutants in the exhaust gas.

[0010] Based on the above technical features, preferably, the photocatalytic oxidation tank also includes a photocatalyst, and the photocatalyst is titanium dioxide to improve the efficiency of the photocatalytic reaction and reduce energy consumption.

[0011] Compared with the prior art, the beneficial effects of this application are:

[0012] The present application can realize accurate analysis and directional treatment of the exhaust gas components by arranging a gas chromatography-mass spectrometry instrument and a pipeline diverter valve at the exhaust gas inlet, and can divert the exhaust gas to the most suitable treatment unit according to the exhaust gas components monitored in real time, thereby maximizing the treatment efficiency and energy saving effect;

[0013] Combining multiple waste gas treatment technologies such as biological filtration pools, activated carbon adsorption pools and photocatalytic oxidation pools, it is possible to carry out multi-level and comprehensive treatment of waste gas pollutants of different components. This multi-technical combined treatment method effectively improves the comprehensiveness and thoroughness of waste gas treatment;

[0014] The biological filtration pool uses filler layers and biofilms to degrade organic pollutants, the activated carbon adsorption pool uses large-pore activated carbon fillers to adsorb organic matter and odorous substances, and the photocatalytic oxidation pool uses ultraviolet light sources to excite photocatalysts to produce active oxygen to oxidize pollutants in the exhaust gas. The synergistic effect of these treatment units can effectively remove organic pollutants and odorous substances in the exhaust gas, ensuring the environmental friendliness of exhaust gas emissions;

[0015] A gas chromatography-mass spectrometry instrument is installed at the exhaust gas inlet, and the same instrument is also installed before the exhaust port, which realizes real-time monitoring of the exhaust gas composition throughout the entire process. This helps to adjust the treatment parameters in time, ensure the stability and effectiveness of the exhaust gas treatment, and provide reliable data support for subsequent environmental supervision. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an energy-saving device for treating low-concentration malodorous waste gas according to the utility model;

[0017] List of Figure Symbols:

[0018] 1. Gas chromatography-mass spectrometry instrument; 2. Waste gas inlet; 3. Pipeline diverter valve; 4. First pipeline; 5. Biological filtration tank; 6. Second pipeline; 7. Activated carbon adsorption tank; 8. Connecting pipeline; 9. Switch valve; 10. Photocatalytic oxidation tank; 11. Discharge port. DETAILED DESCRIPTION

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0020] It should be noted that the words "up", "down", "left", "right", "front" and "rear" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] like Figure 1 As shown, an energy-saving device for treating low-concentration malodorous waste gas includes a control system, a waste gas inlet 2, a gas chromatography-mass spectrometry instrument 1 is provided at the waste gas inlet, a pipeline diverter valve 3 is provided behind the gas chromatography-mass spectrometry instrument 1, the pipeline diverter valve 3 is connected with a first pipeline 4 and a second pipeline 6, the first pipeline 4 is connected to a biological filtration tank 5, the second pipeline 6 is connected to an activated carbon adsorption tank 7, a connecting pipeline 8 is provided between the biological filtration tank 5 and the activated carbon adsorption tank 7, and a switch valve 9 is provided on the connecting pipeline 8. By providing the gas chromatography-mass spectrometry instrument 1 and the pipeline diverter valve 3 at the waste gas inlet 2, accurate analysis and directional treatment of waste gas components can be achieved, and waste gas can be diverted to the most suitable treatment unit according to the waste gas components monitored in real time by the gas chromatography-mass spectrometry instrument 1, thereby maximizing the treatment efficiency and energy-saving effect. When the exhaust gas emission is low or the pollutant concentration is low, the control system can adjust the pipeline diverter valve and the switch valve to reduce the air intake time of the biofilter or stop the air intake, so that the biofilter is in a dormant state and directly reaches the activated carbon adsorption tank, thereby saving energy; when the exhaust gas emission increases or the pollutant concentration is high, the air intake time of the biofilter can be increased or the air intake can be restored, so that the biofilter can be restarted and the organic pollutants can be efficiently degraded. The waste gas treated by the biofilter can then be processed for the next step of waste gas treatment. By reasonably adjusting the operation cycle of the biofilter, continuous energy consumption can be avoided, making the waste gas treatment system more energy-saving and efficient. At the same time, intermittent operation can also reduce the consumption of consumables for the biofilter, extend the service life of the filter material, and reduce operating costs.

[0022] The activated carbon adsorption pool 7 is connected to a photocatalytic oxidation pool 10 , and the photocatalytic oxidation pool 10 is connected to a discharge port 11 .

[0023] Furthermore, a gas chromatography-mass spectrometry instrument 1 is provided before the discharge port 11. The exhaust gas inlet is provided with a gas chromatography-mass spectrometry instrument, and the same instrument is also provided before the discharge port, so as to realize the real-time monitoring of the exhaust gas composition in the whole process. This helps to adjust the treatment parameters in time, ensure the stability and effect of the exhaust gas treatment, and provide reliable data support for subsequent environmental supervision.

[0024] Furthermore, the biological filtration pool 5 includes a packing layer, on which a biofilm is attached, and the biofilm is used to degrade organic pollutants in the exhaust gas.

[0025] Furthermore, the activated carbon adsorption tank 7 includes an activated carbon filler with a large pore size, which can effectively adsorb organic matter and odorous substances in the exhaust gas. Preferably, the activated carbon adsorption tank can adopt a regeneration technology, including regenerating the adsorbent by heating, steam or blowing, so as to extend the service life of the adsorbent and reduce the operating cost.

[0026] Preferably, the photocatalytic oxidation pool 10 is provided with an ultraviolet light source, which can excite the photocatalyst to produce active oxygen, thereby oxidizing the pollutants in the exhaust gas. Preferably, the ultraviolet light source can adjust the illumination time and light source intensity through a control system to reduce energy consumption. In the case of high pollutant concentration, the light source intensity can be increased or the working time of the photocatalytic reactor can be extended to ensure the treatment effect.

[0027] Preferably, the photocatalytic oxidation pool further comprises a photocatalyst, and the photocatalyst is titanium dioxide, so that the efficiency of the photocatalytic reaction is improved and the energy consumption is reduced. This ensures that when treating low-concentration exhaust gas, the effect of efficient treatment can still be achieved, saving energy and operating costs.

[0028] It should be noted that the drawings only illustrate the technical ideas of the present invention, and the protection scope of the present invention cannot be limited by this shape. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims

1. An energy-saving device for treating low-concentration malodorous waste gas, characterized in that: It includes a control system and an exhaust gas inlet, wherein the exhaust gas inlet is provided with a gas chromatography-mass spectrometry instrument, a pipeline diverter valve is provided behind the gas chromatography-mass spectrometry instrument, the pipeline diverter valve is connected with a first pipeline and a second pipeline, the first pipeline is connected with a biological filtration tank, the second pipeline is connected with an activated carbon adsorption tank, a connecting pipeline is provided between the biological filtration tank and the activated carbon adsorption tank, a switch valve is provided on the connecting pipeline, a photocatalytic oxidation tank is connected behind the activated carbon adsorption tank, and the photocatalytic oxidation tank is connected with a discharge port.

2. The energy-saving device for treating low-concentration malodorous waste gas according to claim 1, characterized in that: A gas chromatography-mass spectrometry instrument is arranged before the discharge port.

3. The energy-saving device for treating low-concentration malodorous waste gas according to claim 1, characterized in that: The biological filtration pool comprises a filler layer, on which a biofilm is attached.

4. The energy-saving device for treating low-concentration malodorous waste gas according to claim 1, characterized in that: The activated carbon adsorption cell includes an activated carbon filler having a large pore size.

5. The energy-saving device for treating low-concentration malodorous waste gas according to claim 1, characterized in that: The photocatalytic oxidation pool is provided with an ultraviolet light source.

6. The energy-saving device for treating low-concentration malodorous waste gas according to claim 5, characterized in that: The photocatalytic oxidation pool also includes a photocatalyst, and the photocatalyst is titanium dioxide.

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