Organic waste gas purification device based on biological filter

Abstract

The utility model relates to the technical field of organic waste gas purification, in particular to an organic waste gas purification device based on a biological filter, which comprises a tank body, a gas inlet distribution layer, a filler layer, a spraying layer and a gas outlet layer are sequentially arranged inside the tank body from bottom to top, and a perforated plate is fixedly connected inside the gas inlet distribution layer. A plurality of sensor systems are uniformly and fixedly connected to the surface of the inner wall of the filler layer, a spraying pipe is fixedly connected to the interior of the spraying layer, and a demister is fixedly connected to the interior of the gas outlet layer. Therefore, the effect that the organic waste gas is distributed more uniformly when entering the filler layer is achieved, the contact area of microorganisms and the waste gas is increased, the contact time of the microorganisms and the waste gas is prolonged, and the specially-made biological filler and the specific microbial flora have good degradation capacity on pollutants in the organic waste gas, so that the purification efficiency of the organic waste gas is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of organic waste gas purification technology, specifically to an organic waste gas purification device based on a biological filter. Background Technology

[0002] With the rapid development of industry, the emission of organic waste gas is increasing day by day. Organic waste gas contains a variety of volatile organic compounds, such as benzene, toluene, xylene and formaldehyde. These substances not only pollute the atmospheric environment and cause harm such as photochemical smog and acid rain, but also have a serious impact on human health.

[0003] Existing technologies typically employ adsorption or combustion methods to treat organic waste gas. Activated carbon adsorbents adsorb pollutants from organic waste gas; however, the adsorption capacity of adsorbents is limited, requiring frequent replacement, and the adsorbents after adsorption are difficult to treat, potentially causing secondary pollution if not handled properly. High-temperature combustion converts organic matter in organic waste gas into carbon dioxide and water, but this method is energy-intensive, and for low-concentration organic waste gas, the combustion process is difficult to maintain, requiring additional fuel and increasing treatment costs.

[0004] Traditional biofilters have an unreasonable structural design and uneven gas distribution, resulting in insufficient contact between microorganisms and organic waste gas, leading to low purification efficiency. At the same time, the growth environment of microorganisms in biofilters is difficult to control precisely, such as temperature, humidity, and nutrient concentration, which affects microbial activity and thus the purification effect. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an organic waste gas purification device based on a biological filter, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an organic waste gas purification device based on a biological filter, comprising: a tank, wherein the interior of the tank is provided with an air inlet distribution layer, a packing layer, a spray layer and an air outlet layer arranged sequentially from bottom to top; a perforated plate is fixedly connected inside the air inlet distribution layer, a cooling water pipe is fixedly connected to the top of the perforated plate, and a heating wire is fixedly connected inside the perforated plate; the packing layer is filled with biological filler, and a plurality of sensor systems are uniformly fixedly connected to the inner wall surface of the packing layer; a spray pipe is fixedly connected inside the spray layer; and a demister is fixedly connected inside the air outlet layer.

[0008] Furthermore, an air inlet is fixedly connected to the bottom of the tank, an air outlet is fixedly connected to the top of the tank, and an observation window is fixedly connected to one end of the tank.

[0009] Furthermore, several ventilation holes are evenly distributed on the top surface of the perforated plate, and an air inlet pipe is fixedly connected to the bottom end of the perforated plate, with the air inlet pipe and the air inlet being connected in a continuous manner.

[0010] Furthermore, the biological filler is made of volcanic rock, and its surface is covered with specific microbial communities that target pollutants in organic waste gas.

[0011] Furthermore, the sensor system includes a temperature sensor, a humidity sensor, and a nutrient concentration sensor.

[0012] Furthermore, a water inlet pipe is fixedly connected to one side of the spray pipe, and the water inlet pipe is fixedly connected to the tank body. Several spray nozzles are evenly fixedly connected to the bottom end of the spray pipe.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0014] 1. By setting up an air intake distribution layer, a perforated plate is installed inside the air intake distribution layer during use. Organic waste gas enters the packing layer through the air vents on the surface of the perforated plate, thereby achieving a more uniform distribution of organic waste gas in the packing layer. This increases the contact area and time between microorganisms and waste gas. The specially designed biological packing and specific microbial flora have a good degradation ability for pollutants in organic waste gas, thereby effectively improving the purification efficiency of organic waste gas.

[0015] 2. Through the setting of the sensor system, the sensor system is evenly distributed inside the packing layer during use. The sensor system includes temperature sensor, humidity sensor and nutrient concentration sensor. By real-time monitoring and automatic adjustment of environmental parameters such as temperature, humidity and nutrient concentration in the biological filter, a stable and suitable growth environment is provided for microorganisms, ensuring that microorganisms always maintain high activity, thereby ensuring the stable operation of the purification device.

[0016] 3. Through reasonable structural design and precise control of operating parameters, this device reduces the additional costs of adsorbent replacement and fuel addition, further reducing the treatment cost of organic waste gas. Moreover, the treatment of organic waste gas by biological filter will not generate secondary pollution, and the purified gas meets emission standards, which is environmentally friendly and friendly to the environment and human health. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the tank of this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the perforated plate structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the spray pipe structure of this utility model.

[0023] The labels in the diagram represent:

[0024] 1. Tank body; 101. Air inlet; 102. Air outlet; 103. Observation window; 2. Air distribution layer; 201. Perforated plate; 202. Ventilation hole; 203. Air inlet pipe; 204. Cooling water pipe; 205. Heating wire; 3. Packing layer; 301. Biological filler; 302. Sensor system; 4. Spray layer; 401. Spray pipe; 402. Water inlet pipe; 403. Nozzle; 5. Air outlet layer; 501. Demister. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example 1:

[0028] Reference Figure 1-5This is the first embodiment of the present invention, which discloses an organic waste gas purification device based on a biological filter, comprising: a tank 1, wherein the interior of the tank 1 is provided with an air inlet distribution layer 2, a packing layer 3, a spray layer 4 and an air outlet layer 5 arranged sequentially from bottom to top; a perforated plate 201 is fixedly connected inside the air inlet distribution layer 2; a cooling water pipe 204 is fixedly connected to the top of the perforated plate 201; a heating wire 205 is fixedly connected inside the perforated plate 201; the packing layer 3 is filled with biological filler 301; a plurality of sensor systems 302 are uniformly fixedly connected to the inner wall surface of the packing layer 3; a spray pipe 401 is fixedly connected inside the spray layer 4; and a demister 501 is fixedly connected inside the air outlet layer 5.

[0029] By setting up the air inlet distribution layer 2, a perforated plate 201 is installed inside the air inlet distribution layer 2 during use. Organic waste gas enters the packing layer 3 through the air vents 202 on the surface of the perforated plate 201, thereby achieving a more uniform distribution of organic waste gas in the packing layer 3. This increases the contact area and time between microorganisms and waste gas. The specially made biological packing material and specific microbial flora have a good degradation ability for pollutants in organic waste gas, thereby effectively improving the purification efficiency of organic waste gas.

[0030] Example 2:

[0031] Reference Figure 1-5 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0032] An air inlet 101 is fixedly connected to the bottom of the tank 1, an air outlet 102 is fixedly connected to the top of the tank 1, and an observation window 103 is fixedly connected to one end of the tank 1. Several ventilation holes 202 are evenly opened on the surface of the top of the perforated plate 201. An air inlet pipe 203 is fixedly connected to the bottom of the perforated plate 201, and the air inlet pipe 203 is connected to the air inlet 101. The biological filler 301 is made of volcanic rock, and the surface of the biological filler 301 is covered with specific microbial flora targeting pollutants in organic waste gas. The sensor system 302 includes a temperature sensor, a humidity sensor, and a nutrient concentration sensor.

[0033] With the sensor system 302 set up, the sensor system 302 is evenly distributed inside the packing layer 3 during use. The sensor system 302 includes a temperature sensor, a humidity sensor and a nutrient concentration sensor. By monitoring and automatically adjusting the environmental parameters of temperature, humidity and nutrient concentration in the biological filter in real time, a stable and suitable growth environment is provided for microorganisms, ensuring that the microorganisms always maintain a high activity level, thereby ensuring the stable operation of the purification device.

[0034] A water inlet pipe 402 is fixedly connected to one side of the spray pipe 401. The water inlet pipe 402 is fixedly connected to the tank body 1. Several spray nozzles 403 are evenly fixedly connected to the bottom end of the spray pipe 401.

[0035] By rationally designing the structure and precisely controlling the operating parameters, the additional costs of adsorbent replacement and fuel addition are reduced, further lowering the treatment cost of organic waste gas. Moreover, the treatment of organic waste gas through the biological filter method does not generate secondary pollution, and the purified gas meets emission standards, complies with environmental protection requirements, and is relatively friendly to the environment and human health.

[0036] The remaining structure is the same as that in Example 1.

[0037] The workflow of this utility model is as follows:

[0038] First, organic waste gas enters the inlet pipe 203 through the inlet 101. The inlet 101 is equipped with a regulating valve, which can adjust the intake volume according to the actual waste gas flow rate and concentration. Then, the waste gas enters the perforated plate 201 and passes through the vent holes 202 into the packing layer 3. Through the setting of the air distribution layer 2, which is equipped with the perforated plate 201, the organic waste gas enters the packing layer 3 through the vent holes 202 on the surface of the perforated plate 201. This achieves the effect of more uniform distribution of organic waste gas in the packing layer 3, increases the contact area and time between microorganisms and waste gas, and the specially made biological packing and specific microbial flora have a good degradation ability for pollutants in organic waste gas, thereby effectively improving the purification efficiency of organic waste gas.

[0039] Secondly, the inlet pipe 402 is connected to an external nutrient solution supply system, the cooling water pipe 204 is connected to an external cooling fluid circulation system, the sensor system 302 monitors the environmental parameters inside the packing layer 3 in real time, the heating wire 205 and the cooling water pipe 204 are used to regulate the temperature inside the packing layer 3, and the spray pipe 401 is used to replenish the moisture and nutrients inside the packing layer 3. The sensor system 302, the heating wire 205, the cooling water pipe 204 and the spray pipe 401 are all connected to an external control system. Based on the data monitored by the sensor system 302, the temperature, humidity and nutrient concentration inside the packing layer 3 are automatically adjusted, providing a stable and suitable growth environment for microorganisms and ensuring that the microorganisms always maintain a high activity level, thereby ensuring the stable operation of the purification device.

[0040] Finally, the purified organic waste gas is discharged through the outlet 102 after passing through the outlet layer 5. When the gas passes through the demister 501, the gas changes its flow direction in the tortuous channel. After the droplets hit the plate wall, they gather and flow down, thereby achieving the effect of separating the droplets or particulate matter in the gas from the airflow. Through reasonable structural design and precise control of operating parameters, the additional costs of adsorbent replacement and fuel addition are reduced, further reducing the treatment cost of organic waste gas. Moreover, the treatment of organic waste gas by the biological filter method does not generate secondary pollution. The purified gas meets the emission standards, complies with environmental protection requirements, and is relatively friendly to the environment and human health.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for purifying organic exhaust gas based on a biofilter, characterized by Include: The tank body (1), the inside of the tank body (1) is sequentially provided with air distribution layer (2), filler layer (3), spray layer (4) and air outlet layer (5) from bottom to top, the inside of the air distribution layer (2) is fixedly connected with perforated plate (201), the top end of the perforated plate (201) is fixedly connected with cooling water pipe (204), the inside of the perforated plate (201) is fixedly connected with heating wire (205), the inside of the filler layer (3) is filled with biological filler (301), the inner wall surface of the filler layer (3) is uniformly fixedly connected with several sensor systems (302), the inside of the spray layer (4) is fixedly connected with spray pipe (401), the inside of the air outlet layer (5) is fixedly connected with demister (501).

2. The organic waste gas purification device based on a biofilter according to claim 1, characterized by The bottom end of the tank body (1) is fixedly connected with air inlet (101), the top end of the tank body (1) is fixedly connected with air outlet (102), one end of the tank body (1) is fixedly connected with observation window (103).

3. The device according to claim 2, wherein The surface of the top end of the perforated plate (201) is uniformly provided with several air holes (202), the bottom end of the perforated plate (201) is fixedly connected with air inlet pipe (203), the air inlet pipe (203) and the air inlet (101) are connected through.

4. The device according to claim 1, wherein The biological filler (301) adopts volcanic rock material, the surface of the biological filler (301) is attached with specific microbial flora for pollutants in organic waste gas.

5. The device according to claim 1, wherein The sensor system (302) includes temperature sensor, humidity sensor and nutrient concentration sensor.

6. The device according to claim 1, wherein One side of the spray pipe (401) is fixedly connected with water inlet pipe (402), the water inlet pipe (402) and the tank body (1) are fixedly connected, the bottom end of the spray pipe (401) is uniformly fixedly connected with several spray heads (403).

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