Biofilter deodorization device with improved structure

Abstract

The utility model discloses a structure-improved biological filter deodorization device which comprises a filter body, a grating plate I arranged in the filter body, a baffle plate I arranged at the lower end of the grating plate I, a biological section filter cavity arranged on one side of the filter body, a deodorization unit arranged in the biological section filter cavity and a spraying unit arranged in the filter body, the deodorization unit comprises a partition plate I fixedly mounted in the filter tank body, a plurality of deodorization layers which are mounted between the partition plate I and the inner wall of the right side of the filter tank body and are distributed at equal intervals, and steel plates mounted on the two sides of the deodorization layers. The filler is fully contacted and reacted with microorganisms in the filler layer, the deodorization efficiency is enhanced, the possibility of local drying and hardening of the filler can be reduced by adopting the modes of sectional filler, middle interlayer and spraying, the whole filler and the microorganisms are easily wetted, and the growth requirements of the microorganisms are met.

Description

Technical Field

[0001] This utility model relates to the field of waste deodorization technology, specifically to a structurally improved biological filter deodorization device. Background Technology

[0002] In the field of waste gas deodorization technology, from the initial physical adsorption and ultraviolet photolysis to the chemical washing and absorption of reagents, these processes have more or less exposed shortcomings such as incomplete decomposition of odors, high cost, and unstable effects. However, the most widely used process nowadays is biological deodorization. Biological deodorization is suitable for various occasions such as sewage treatment plants, sewage pumping stations, and kitchen waste treatment because it does not produce secondary pollutants, is environmentally friendly, and can sustainably degrade. Biological deodorization processes mainly include biological soil filters, biological filters, and biological trickling filters. Among them, biological filters have become a commonly used process equipment because of their short residence time, generally around 20 seconds, convenient and controllable operating parameters, and the ability to maintain suitable pH and redox potential values ​​for microorganisms during operation, with minimal impact on the environment for microbial growth and reproduction.

[0003] Biological filters consist of a pre-wash section and a biological section. The pre-wash section is relatively small and achieves good gas humidification and pre-washing effects. However, the biological section of a biological filter typically has a larger packing material volume, and the coverage area of ​​the top circulating spray is easily affected by various factors. Often, due to the rectangular spray structure design at the top of the filter, the spray area of ​​the spiral nozzles is prone to blind spots, failing to fully wet the packing material. This can lead to some packing material hardening and reducing the area effect for microbial growth and biofilm formation. Furthermore, in projects with large gas volumes and increased filter volumes, resulting in a significant increase in the length of the biological section tank, the gas flow... After pre-washing, when the gas reaches the biological section packing layer of the filter bed through the corridor, there is a problem that the gas is not evenly distributed and does not pass through the entire packing layer at a uniform speed. Under the condition of the blower being placed behind and the box being under negative pressure, the gas will directly pass through the local packing layer and reach the top of the filter bed. As a result, the microorganisms in the packing cannot fully utilize and degrade the odor components, which locally increases the treatment load of the microorganisms and the surface flow rate, thus reducing the treatment effect. In addition, after the packing material in the biological section of a typical biological filter bed dries and hardens on both sides, it will form a gas channel, and the exhaust gas will easily form a "wall flow" phenomenon on both sides of the tank wall, which will greatly affect the quality of the effluent. Utility Model Content

[0004] The purpose of this invention is to provide a structurally improved biological filter deodorization device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an improved biological filter deodorization device, comprising a filter body, a grid plate installed inside the filter body, a baffle plate installed at the lower end of the grid plate, a biological section filter chamber located on one side of the filter body, a deodorization unit located inside the biological section filter chamber, and a spray unit located inside the filter body. The deodorization unit includes a partition plate fixedly installed inside the filter body, multiple deodorization layers equally distributed between the partition plate and the inner wall of the right side of the filter body, and steel plates installed on both sides of the multiple deodorization layers. One of the steel plates is fixedly connected to the partition plate, and the other steel plate is fixedly connected to the inner wall of the filter body.

[0006] In a preferred embodiment: each of the multiple deodorization layers is provided with a second grid plate at its lower end, the multiple second grid plates are installed in the filter body, and the upper end of each of the multiple second grid plates is covered with a PP mesh.

[0007] In a preferred embodiment: the deodorizing layer material is a composite filler, the first grating plate is fiberglass, the first baffle is L-shaped, the second grating plate is organic fiberglass, and the second grating plate is provided with square holes.

[0008] In a preferred embodiment: the steel plate material is glass, and the two steel plates are wavy at the ends that are close to each other. The lower end of the first baffle is fixedly connected to the first support frame, and the upper right end of the first baffle is fixedly connected to the second baffle. The upper end of the second baffle is connected to one of the second grid plates, and the lower end of the first support frame is fixedly connected to the inner wall of the filter body.

[0009] In a preferred embodiment: a second partition is fixedly connected to the filter body, the second partition and the left inner wall of the filter body respectively form a pre-washing chamber and an air duct, the upper end of the filter body is provided with an air outlet, and the left side wall of the filter body is provided with an air inlet.

[0010] In a preferred embodiment: the spray unit includes a first spray component located at the upper end of the filter body and a second spray component located at the upper end of two of the deodorization layers. The first spray component includes a first spray pipe, a second spray pipe, a third spray pipe, and a water inlet. The lower end of the first spray pipe is provided with a second support frame, which is fixedly connected to the inner wall of the filter body. The first, second, and third spray pipes are elliptical frame structures. The first and second spray pipes are connected by a three-way valve, and the second and third spray pipes are connected by a three-way valve. The spray pipes are connected by a three-way valve. The spray pipe 1 is connected to a water inlet by a three-way valve. The spray pipes 1, 2, and 3 are all polytetrafluoroethylene (PTFE) flexible hoses. The spray component 2 includes a spray pipe 4 and a spray pipe 5. The spray pipes 4 and 5 are respectively connected to the lower ends of two of the grid plates 2. The spray pipes 4 and 5 are rectangular frame structures and are made of PVC rigid pipes. The lower ends of the spray pipes 1, 2, 3, 4, and 5 are all connected to multiple equally spaced nozzles.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0012] 1. This utility model utilizes a grid plate, a baffle plate, a biological filter chamber, a partition plate, a deodorizing layer, a steel plate, and a spray unit. By installing a baffle plate at the bottom of the filter body's air duct and the biological filter chamber, and adding a corrugated grid plate on both sides of the deodorizing layer, gas can be uniformly degraded by microorganisms within the filter body from bottom to top. By treating the biological filter chamber with a segmented deodorizing layer and adding a packing layer and spray component, the probability of microorganisms contacting and forming a biofilm in the deodorizing layer is increased, and the deodorizing layer is fully wetted, maximizing the deodorizing effect of microbial biofilm formation. By changing the rectangular frame spray structure at the top of the filter body to an elliptical frame spray structure, the spray area of ​​the nozzles at the top of the filter body is improved and increased, reducing the phenomenon of drying and caking of the deodorizing layer, improving the spraying effect and the growth area of ​​deodorizing microorganisms.

[0013] 2. This utility model, through the setting of baffle one and grid plate one, allows the exhaust gas to pass through the deodorization layer in a segmented manner evenly, and the grid plate two, with its fiberglass surface in a "wavy" shape, increases the frictional resistance between the rising airflow and the packing, increases the contact area, and maximizes the adsorption effect and microbial degradation characteristics of the packing.

[0014] 3. This utility model changes the overall packing method of the deodorization layer to a segmented packing method and adds a second spray component in the packing layer, making the deodorization layer easier to be sprayed and wetted by the circulating liquid containing bacteria, giving full play to the combination effect of packing and microorganisms, and the upward airflow and circulating liquid come into more direct and sufficient contact.

[0015] 4. This utility model improves the rectangular frame spray structure at the top of the filter body into an elliptical frame spray structure, so that the spray design can cover most of the packing surface, reduce the existence of spray blind spots, and allow the circulating spray liquid to penetrate evenly from the packing surface to the lower packing layer layer by layer. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of the biological filter deodorization device of this utility model;

[0018] Figure 2 This is a top view schematic diagram of the biological filter deodorization device of this utility model;

[0019] Figure 3 This is a schematic diagram of the exhaust gas flow direction structure of the biological filter deodorization device of this utility model;

[0020] In the diagram: 1. Filter body; 2. Grille plate one; 3. Baffle plate one; 4. Biological section filter chamber; 5. Partition plate one; 6. Deodorization layer; 7. Steel plate; 8. Grille plate two; 9. Support frame one; 10. Baffle plate two; 11. Partition plate two; 12. Pre-wash chamber; 13. Air duct; 14. Air outlet; 15. Air inlet; 16. Spray pipe one; 17. Spray pipe two; 18. Spray pipe three; 19. Water inlet; 20. Support frame two; 21. Three-way valve one; 22. Three-way valve two; 23. Three-way valve three; 24. Spray pipe four; 25. Spray pipe five; 26. Nozzle head. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-3This utility model provides a technical solution: an improved biological filter deodorization device, comprising a filter body 1, a grid plate 2 installed inside the filter body 1, and a baffle plate 3 installed at the lower end of the grid plate 2, which improves air distribution, allowing exhaust gas to enter the deodorization layer 6 evenly and gently, and fully contact and react with the microorganisms in the deodorization layer 6, thereby enhancing deodorization efficiency. It also includes a biological section filter chamber 4 located on one side of the filter body 1, a deodorization unit located within the biological section filter chamber 4, and a spray unit located within the filter body 1. The deodorization unit includes a partition 5 fixedly installed inside the filter body 1, multiple deodorization layers 6 evenly distributed between the partition 5 and the inner wall of the right side of the filter body 1, and a segmented packing material with intermediate partitions and spraying to reduce the possibility of local drying and caking of the packing material. The packing material as a whole and microorganisms are easily wetted to meet the growth requirements of microorganisms. The unit also includes steel plates 7 installed on both sides of the multiple deodorization layers 6, one of which is fixedly connected to the partition 5 and the other is fixedly connected to the inner wall of the filter body 1.

[0023] Each of the deodorization layers 6 has a second grid plate 8 at its lower end, and the second grid plate 8 is installed inside the filter body 1. The upper end of each of the second grid plate 8 is covered with a PP mesh.

[0024] The deodorizing layer 6 is made of composite filler, the first grid plate 2 is made of fiberglass, the first baffle 3 is L-shaped, the second grid plate 8 is made of organic fiberglass, and the second grid plate 8 is provided with square holes.

[0025] The steel plate 7 is made of glass, and the ends of the two steel plates 7 that are close to each other are wavy. The two side walls of the biological section filter chamber 4 are improved to be "wavy" fiberglass panels to reduce the occurrence of gas-liquid wall flow, enhance gas-liquid contact, and ensure that the overall packing of the device is compact and the gas output meets the standards. The lower end of the baffle 1 3 is fixedly connected to the support frame 1 9, and the upper right side of the baffle 1 3 is fixedly connected to the baffle 2 10. The upper end of the baffle 2 10 is connected to one of the grid plates 2 8, and the lower end of the support frame 1 9 is fixedly connected to the inner wall of the filter body 1.

[0026] The filter body 1 is also fixedly connected to a partition 2 11. The partition 2 11 and the left inner wall of the filter body 1 respectively form a pre-washing chamber 12 and an air duct 13. The upper end of the filter body 1 is provided with an air outlet 14, and the left side wall of the filter body 1 is provided with an air inlet 15.

[0027] The spray unit includes a first spray component located at the upper part of the filter body 1 and a second spray component located at the upper part of two of the deodorization layers 6. The first spray component includes a first spray pipe 16, a second spray pipe 17, a third spray pipe 18, and an inlet 19. The lower end of the first spray pipe 16 is provided with a second support frame 20, which is fixedly connected to the inner wall of the filter body 1. The first spray pipe 16, the second spray pipe 17, and the third spray pipe 18 have an elliptical frame structure. The first spray pipe 16 and the second spray pipe 17 are connected by a three-way valve 21, and the second spray pipe 17 and the third spray pipe 18 are connected by a three-way valve 22. The first spray pipe 16 is connected to the inlet 19 through a three-way valve 23. Spray pipe 16, spray pipe 27, and spray pipe 38 are all polytetrafluoroethylene (PTFE) flexible tubes. The second spray component includes spray pipe 424 and spray pipe 525. Spray pipe 424 and spray pipe 525 are respectively connected to the lower ends of two grid plates 28. Spray pipe 424 and spray pipe 525 have a rectangular frame structure, which improves the top frame spray structure of the filter body 1. The large-area spraying makes the growth and reproduction of microorganisms and biofilm formation more rapid, enhances the deodorization effect, and reduces the initial microbial biofilm formation start-up time. The materials are all PVC rigid pipes. The lower ends of spray pipe 16, spray pipe 27, spray pipe 318, spray pipe 424, and spray pipe 525 are all connected to multiple equally spaced nozzle heads 26.

[0028] The working principle of this utility model is as follows: First, an air grid plate 2, made of fiberglass, is fixedly installed at the bottom of the air duct 13 of the filter body 1. A vertical airflow separation baffle 3 is installed below the grid plate 2, while the horizontal baffle 3 is located in the middle of the original main airflow direction until half the length of the packing material. The airflow separation baffle 3 is then supported by the lower fiberglass support frame 9 to prevent the airflow entering the biological section from becoming unstable. Thus, about half of the airflow can pass through one side of the baffle 3 and flow upwards, while the remaining airflow passes through the other side of the airflow separation baffle 3, facilitating its entry into the other half of the deodorization layer 6 area. This adjustment can enhance the interaction between microorganisms and odor components, improve the overall airflow direction, and make the exhaust gas flow more evenly when passing through the deodorization layer 6. It also reduces the microbial treatment load per unit packing material, and the deodorization effect will be improved, especially under the negative pressure condition after the blower.

[0029] Next, the material and structure of the walls on both sides of the biological section filter chamber 4 were changed to "wave-shaped" fiberglass plates 7. The surface of the steel plate 7 is uneven, which enhances the contact friction between the rising airflow and the packing and the wave plate. At the same time, it also improves the problems of pores and gas wall flow and short flow caused by the packing and the walls of the steel plates 7 on both sides due to the long-term drying and hardening of the packing. This ensures that the gas is treated by deodorizing microorganisms and the gas quality meets the standards.

[0030] Then, by using segmented packing, after filling a certain height of filter media, a gap is left between each segment, and then the packing is repeated until the top layer of packing is completed. In the partition between every two deodorization layers 6, spray pipes and nozzles 26 are added to enhance the coverage of the packing by the circulating spray and expand the growth and reproduction area of ​​microorganisms inside the packing. The support layer of the segmented packing is composed of fiberglass grating 2 8. The spray pipes 4 24 and 5 25 are rectangular in structure and are made of PVC rigid pipes, which are fixed to the upper support grating. In this way, even if there is local packing hardening and drying, the spray angle of each section of packing can be adjusted or the packing can be replaced locally, which enhances the operability of subsequent device operation and adjustment.

[0031] Finally, by changing the traditional rectangular frame structure of the top spray system to an elliptical frame structure, the entire frame is fixed to the top of the filter body 1 and its four corners. The spray pipes are made of polytetrafluoroethylene (PTFE) flexible tubing, which is resistant to acid and alkali corrosion, ensuring stable pressure in spray pipes 16, 17, and 18, preventing leakage and pressure drop caused by pipe corrosion. The elliptical spray pipes 16, 17, and 18 are connected using a T-joint, allowing spray pipe 16 to... Spray pipe 2 17 and spray pipe 3 18 are detachable, so that the microbial agent can be covered over a large area on the top of the filter body 1 and seep down evenly. With the help of the partition spray component 2, the agent can be distributed in the segmented packing without dead corners. In addition, in order to reasonably distribute the water pressure of the circulating spray in different parts, the top of the filter body 1 has a large number of spray nozzles 26 and the water pressure distribution is dominant. Therefore, the partition spray component 2 is designed as a rectangular frame structure to maintain sufficient pressure for the top spraying operation.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structural improved biological filter deodorizing device, characterized in that: The utility model provides a filter tank, including filter tank body (1), install the grid board one (2) in filter tank body (1), install the baffle one (3) in the lower end of grid board one (2), the biological section filter chamber (4) of being equipped with in one side of filter tank body (1), the deodorization unit of being equipped with in biological section filter chamber (4) and the spray unit of being equipped with in filter tank body (1), the deodorization unit includes fixed mounting in filter tank body (1) the baffle one (5), install a plurality of equidistance distribution deodorization layer (6) between baffle one (5) and the right side inner wall of filter tank body (1) and install the steel sheet (7) in both sides of a plurality of deodorization layer (6), one steel sheet (7) is fixedly connected with baffle one (5), and another steel sheet (7) is fixedly connected with the inner wall of filter tank body (1).

2. The improved biological filter deodorizing device according to claim 1, wherein: The lower end of a plurality of deodorization layer (6) is equipped with grid board two (8), a plurality of grid board two (8) are installed in filter tank body (1), and the upper end of a plurality of grid board two (8) is laid with PP net.

3. The improved biological filter deodorizing device according to claim 2, wherein: The material of deodorization layer (6) is composite filler, the grid board one (2) is glass steel, the baffle one (3) is L-shaped, the grid board two (8) is organic glass steel, and square hole is equipped on the grid board two (8).

4. The improved biological filter deodorizing device according to claim 3, wherein: The material of steel sheet (7) is glass, and the end of two steel sheets (7) close to each other is wave-shaped, the lower end of baffle one (3) is fixedly connected with support frame one (9), the right side upper end of baffle one (3) is fixedly connected with baffle two (10), the upper end of baffle two (10) is connected with one of grid board two (8), and the lower end of support frame one (9) is fixedly connected with the inner wall of filter tank body (1).

5. The improved biological filter deodorizing device according to claim 4, wherein: The filter tank body (1) is also fixedly connected with baffle two (11), the left side inner wall of filter tank body (1) forms pre-washing chamber (12) and air duct (13) respectively, the upper end of filter tank body (1) is equipped with air outlet (14), and the left side wall of filter tank body (1) is equipped with air inlet (15).

6. The improved biological filter deodorizing device according to claim 5, wherein: The spray unit comprises a spray member one arranged at the upper end of the filter tank body (1) and a spray member two arranged at the upper end of the two deodorizing layers (6), the spray member one comprises a spray pipe one (16), a spray pipe two (17), a spray pipe three (18) and a water inlet (19), the lower end of the spray pipe one (16) is provided with a support frame two (20), the support frame two (20) is fixedly connected with the inner wall of the filter tank body (1), the spray pipe one (16), the spray pipe two (17) and the spray pipe three (18) are elliptical frame structures, the spray pipe one (16) and the spray pipe two (17) are communicated through a three-way valve one (21), the spray pipe two (17) and the spray pipe three (18) are communicated through a three-way valve two (22), the spray pipe one (16) is communicated with the water inlet (19) through a three-way valve three (23), the spray pipe one (16), the spray pipe two (17) and the spray pipe three (18) are all polytetrafluoroethylene hoses, the spray member two comprises a spray pipe four (24) and a spray pipe five (25), the spray pipe four (24) and the spray pipe five (25) are respectively connected with the lower ends of the two grid plates two (8), the spray pipe four (24) and the spray pipe five (25) are rectangular frame structures and are made of PVC hard pipes, the lower ends of the spray pipe one (16), the spray pipe two (17), the spray pipe three (18), the spray pipe four (24) and the spray pipe five (25) are all communicated with a plurality of nozzle heads (26) which are equidistantly distributed.

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