A device for degrading odor in a biofilter

Abstract

The utility model discloses a biological filter peculiar smell degradation device relates to biological degradation technical field. Its structure includes the biological filter closed degradation box of cuboid structure, and the biological filter closed degradation box both ends install a pipeline respectively, and the pipeline is installed with the ball valve, and the biological filter closed degradation box inner top wall and the front and back inner wall are fixed with twelve partition plates and divide the biological filter closed degradation box inner part into thirteen degradation spaces. The utility model discloses through multistage degradation and airflow optimization design, and the processing efficiency is improved significantly: thirteen degradation spaces cooperate seven times aeration transmission, realize the stench gas multiple adsorption decomposition, and the absorption rate is more than 98%, and the untreated gas escape is prevented absolutely, and the gas pipe group is forced to distribute airflow, avoids local overload, and guarantees the treatment stability, and the compact integrated structure reduces the land occupation, and cooperates the observation window and the manhole and is convenient for operation and maintenance, is applicable to the high concentration complex stench gas treatment, effectively solves traditional device efficiency low, and the problem such as discharge substandard, and has the economic and environmental benefits.

Description

Technical Field

[0001] This utility model belongs to the field of biodegradation technology, and in particular relates to a biological filter odor degradation device. Background Technology

[0002] Biological filters are a common method for treating industrial or municipal odors. The principle involves dispersing odors as microbubbles into a packing layer using aeration components. Microorganisms attached to the packing surface then nitrify or aerobically decompose odor components (such as hydrogen sulfide and ammonia). However, traditional biological filters have several significant drawbacks: Traditional devices typically employ a single-stage aeration design, where odors are directly introduced to the bottom of the filter and rise all at once. Some odors escape with the airflow before fully contacting the microorganisms, resulting in incomplete degradation and residual pollutants in the emitted gas. Furthermore, the aeration component layout is simplistic, leading to localized accumulation or short-circuiting of odors within the packing layer, resulting in low space utilization. This necessitates compensating by extending the filter length or increasing the packing thickness, increasing equipment size and cost. Finally, for high-concentration or complex odors, single-stage treatment is insufficient for efficient degradation, and unadsorbed gases are directly released into the atmosphere, causing secondary pollution and failing to meet stringent environmental emission standards.

[0003] To address the aforementioned problems, this invention proposes a biofilter device for multi-stage degradation and airflow redistribution.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a biological filter odor degradation device that significantly improves odor treatment efficiency and stability through spatial division, optimization of air duct assembly and bidirectional aeration design, resulting in significant economic and environmental benefits.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a biological filter odor degradation device, comprising a rectangular closed biological filter degradation box; a pipe is installed at each end of the closed biological filter degradation box; ball valves are installed on the pipes; twelve partition plates are fixed between the top wall and the front and rear inner walls of the closed biological filter degradation box, dividing the interior of the closed biological filter degradation box into thirteen degradation spaces; an aeration component is installed at the bottom of the closed biological filter degradation box, directly below each of the thirteen degradation spaces; a three-way pipe is fixedly installed through the top wall of the closed biological filter degradation box. The three-way pipe has two output ends directly connected to the aeration components below the left and right degradation spaces, respectively; an exhaust pipe is fixed through the top wall of the closed degradation tank of the biological filter; the exhaust pipe is connected to the upper end of the central degradation space; the thirteen degradation spaces are connected by symmetrically arranged first and second air guide pipe groups, and the first and second air guide pipe groups are connected to the aeration components except for the two ends; the packing material and liquid level in the closed degradation tank of the biological filter are both higher than the lower end of the partition plate.

[0007] As a preferred embodiment of this utility model, the six degradation spaces on the left side and the central degradation space are sequentially connected to the seven degradation spaces through the first air guide pipe group, and the first air guide pipe group is connected to these seven aeration components.

[0008] As a preferred embodiment of this utility model, the six degradation spaces on the right side and the central degradation space are sequentially connected to the seven degradation spaces through the second air guide pipe group, and the second air guide pipe group is connected to these seven aeration components.

[0009] As a preferred embodiment of this utility model, the first air guide pipe assembly includes an inverted first air guide pipe, a second air guide pipe, a third air guide pipe, a fourth air guide pipe, a fifth air guide pipe, and a sixth air guide pipe; the first air guide pipe connects the degradation space on the left-first and the degradation space on the left-sixth; the second air guide pipe connects the degradation space on the left-sixth and the degradation space on the left-second; the third air guide pipe connects the degradation space on the left-second and the degradation space on the left-fifth; the fourth air guide pipe connects the degradation space on the left-fifth and the degradation space on the left-third; the fifth air guide pipe connects the degradation space on the left-third and the degradation space on the left-fourth; the sixth air guide pipe connects the degradation space on the left-fourth and the central degradation space; an axial flow fan is installed at the upper end of each of the first, second, third, fourth, fifth, and sixth air guide pipes; the lower ends of each of the first, second, third, fourth, fifth, and sixth air guide pipes are connected to the aeration assembly below them. The second air duct assembly is symmetrically arranged with the first air duct assembly.

[0010] As a preferred technical solution of this utility model, the side wall of the closed degradation tank of the biological filter is provided with several observation windows and several manholes.

[0011] This utility model has the following beneficial effects: This invention employs a design with thirteen degradation spaces and seven aeration cycles, allowing odors to undergo multiple "adsorption-decomposition" cycles within a limited space. This significantly increases the contact frequency between odors and bacteria, raising the absorption rate to over 98% and solving the problem of inadequate treatment with traditional single aeration.

[0012] This invention uses a first / second air guide pipe assembly in conjunction with an axial flow fan to force airflow, ensuring that odors are evenly distributed to each degradation space along a preset path, avoiding local bacterial overload or gas short circuit, and improving overall treatment stability.

[0013] This utility model features a bidirectional venting tube assembly design combined with a central exhaust structure, which allows residual odor that was not initially adsorbed to be intercepted multiple times in subsequent spaces, eliminating the defect of direct odor emission in traditional devices.

[0014] This utility model integrates the partition plate and the air duct assembly, enabling multi-stage processing within a single enclosed enclosure and reducing floor space. The observation window and manhole facilitate operation monitoring and maintenance, thereby reducing operating costs.

[0015] This invention can handle odors with high concentrations and complex components, and is suitable for scenarios with severe odor pollution such as sewage treatment plants and garbage disposal stations. It has strong technical extensibility.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 odor degradation device for biological filters of this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the present invention after removing the cover of the closed degradation tank of the biological filter, the aeration components, the three-way pipe and the exhaust pipe.

[0021] The attached diagram lists the components represented by each number as follows: 1-Closed degradation chamber of biological filter, 11-Pipe, 12-Ball valve, 13-Baffle plate, 14-Degradation space, 2-Aeration component, 5-T-connector, 6-Exhaust pipe, 3-First air guide pipe group, 4-Second air guide pipe group, 7-Packing material, 31-First air guide pipe, 32-Second air guide pipe, 33-Third air guide pipe, 34-Fourth air guide pipe, 35-Fifth air guide pipe, 36-Sixth air guide pipe, 37-Axial flow fan, 15-Observation window, 16-Manhole. Detailed Implementation

[0022] 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 scope of protection of the present utility model. Specific Implementation Example 1: Please see Figure 1-3 As shown, this utility model is a biological filter odor degradation device, including a rectangular closed biological filter degradation box 1. A pipe 11 is installed at each end of the closed biological filter degradation box 1. Ball valves 12 are installed on the pipes 11. Twelve partition plates 13 are fixed between the top wall and the front and rear inner walls of the closed biological filter degradation box 1, dividing the interior of the closed biological filter degradation box 1 into thirteen degradation spaces 14. An aeration component 2 is installed at the bottom of the closed biological filter degradation box 1, directly below each of the thirteen degradation spaces 14. A three-way pipe 5 is fixedly installed through the top wall of the closed biological filter degradation box 1. Two output ends of the three-way pipe 5 are directly connected to the aeration components 2 below the left and right degradation spaces 14, respectively. An exhaust pipe 6 is fixedly installed through the top wall of the closed biological filter degradation box 1. The exhaust pipe 6 is connected to the upper end of the central degradation space 14. Thirteen degradation spaces 14 are interconnected by symmetrically arranged first air guide pipe groups 3 and second air guide pipe groups 4, and the first air guide pipe groups 3 and second air guide pipe groups 4 are connected to the aeration components 2 except for the two ends. The packing material 7 and the liquid level in the closed degradation tank 1 of the biological filter are both higher than the lower end of the partition plate 13.

[0024] The six degradation spaces 14 on the left are connected to the central degradation space 14 in sequence through a first air guide tube group 3, and the first air guide tube group 3 is also connected to these seven aeration components 2. The six degradation spaces 14 on the right are connected to the central degradation space 14 in sequence through a second air guide tube group 4, and the second air guide tube group 4 is also connected to these seven aeration components 2.

[0025] The first air duct group 3 includes an inverted first air duct 31, a second air duct 32, a third air duct 33, a fourth air duct 34, a fifth air duct 35, and a sixth air duct 36. The first air duct 31 connects the left first degradation space 14 and the left sixth degradation space 14. The second air duct 32 connects the left sixth degradation space 14 and the left second degradation space 14. The third air duct 33 connects the left second degradation space 14 and the left fifth degradation space 14. The fourth air duct 34 connects the left fifth degradation space 14 and the left third degradation space 14. The fifth air duct 35 connects the left third degradation space 14 and the left fourth degradation space 14. The sixth air duct 36 connects the left fourth degradation space 14 and the central degradation space 14. An axial flow fan 37 is installed at the upper end of each of the following air ducts: 31, 32, 33, 34, 35, and 36. The lower ends of the first air guide pipe 31, the second air guide pipe 32, the third air guide pipe 33, the fourth air guide pipe 34, the fifth air guide pipe 35, and the sixth air guide pipe 36 are respectively connected to the aeration component 2 below them. The structure of the second air guide pipe group 4 is symmetrically arranged with the structure of the first air guide pipe group 3.

[0026] The main body of the device is a rectangular biofilter closed degradation tank 1, which is internally divided into thirteen independent but interconnected degradation spaces 14 by twelve partition plates 13. Each degradation space has an aeration component 2 at its bottom, a three-way pipe 5 and an exhaust pipe 6 at its top, and observation windows 15 and manholes 16 on its side walls. Packing material 7 fills each degradation space, with the liquid level higher than the lower end of the partition plates, creating a continuous liquid environment. Odors enter the system through the three-way pipe 5 and are efficiently treated through an innovative gas distribution system.

[0027] Primary distribution: Odor is directly transported through the three-way pipe 5 to the aeration components 2 below the first degradation space 14 at both ends, forming microbubble aeration.

[0028] Multi-stage transmission: Through the staggered connection design of the first air guide tube group 3 and the second air guide tube group 4, odor is transferred through seven aeration stages between the six spaces on the left, the six spaces on the right, and the central degradation space. The specific path is: left 1 → left 6 → left 2 → left 5 → left 3 → left 4 → center (first air guide tube group 3), and the same transmission logic is executed symmetrically on the right (second air guide tube group 4).

[0029] Final emission: The clean gas after multi-stage biodegradation is discharged through the exhaust pipe 6 at the top of the central degradation space 14.

[0030] Enhanced absorption through multiple aeration cycles: The seven-cycle aeration redistribution design significantly extends the contact time between odorous gases and the microbial community on the packing surface, allowing unreacted gases to be adsorbed and degraded multiple times in subsequent spaces, solving the problem of "gas short circuit" that is prone to occur in traditional single aeration.

[0031] Uniform distribution optimization: The first / second air guide pipe group adopts inverted air guide pipes (31-36) in conjunction with axial flow fan 37 to force the gas to flow along the preset path, ensuring the uniformity of gas distribution in each degradation space and avoiding local bacterial overload.

[0032] Two-way processing mechanism: The left and right symmetrical air duct design forms a two-way processing channel, which, combined with the centralized exhaust of the central degradation space, constructs a composite fluid processing system to improve processing capacity and stability.

[0033] As the microbubbles generated by the aeration components rise, they come into full contact with the nitrifying bacteria on the surface of the packing material 7, undergoing a nitrification reaction that converts odorous substances (such as H2S and NH3) into harmless substances. The residual odor that was not initially adsorbed enters the next degradation space with the airflow, where it comes into contact with fresh bacteria again during a new round of aeration. Through multi-stage relay treatment, a degradation efficiency of nearly 100% is achieved.

[0034] This design, through spatial segmentation and airflow reorganization, allows odors to undergo multiple "aeration-adsorption-decomposition" cycles within a limited space. Combined with a uniform gas distribution system, it significantly improves odor decomposition performance, increasing the odor absorption rate to over 98%, eliminating gas short-circuiting, preventing the direct emission of untreated gas, extending the contact time between bacteria and pollutants, enhancing the treatment capacity for recalcitrant substances, and enabling visual monitoring and convenient maintenance of the operating status through observation windows and manholes.

[0035] This embodiment effectively solves the technical defects of traditional biological filters through structural innovation and flow optimization, and is particularly suitable for odor treatment scenarios with high concentrations and complex components.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A biological filter odor degradation device, characterized in that: Including a rectangular biofilter closed degradation box (1); The biological filter closed degradation tank (1) is equipped with a pipe (11) at each end; a ball valve (12) is installed on the pipe (11); The biofilter closed degradation box (1) has twelve partition plates (13) fixed between the top wall and the front and rear inner walls to divide the inside of the biofilter closed degradation box (1) into thirteen degradation spaces (14); an aeration component (2) is set at the bottom of the biofilter closed degradation box (1) directly below the thirteen degradation spaces (14). The top wall of the closed degradation tank (1) of the biological filter is fixed with a three-way pipe (5); two of the output ends of the three-way pipe (5) are directly connected to the aeration components (2) below the degradation space (14) on the left and the degradation space (14) on the right, respectively. The top wall of the closed degradation tank (1) of the biological filter is fixed with an exhaust pipe (6); the exhaust pipe (6) is connected to the upper end of the central degradation space (14); The thirteen degradation spaces (14) are interconnected by a first air guide tube group (3) and a second air guide tube group (4) arranged symmetrically, and the first air guide tube group (3) and the second air guide tube group (4) are connected to the aeration components (2) except for the two ends. The packing material (7) and liquid level in the closed degradation tank (1) of the biofilter are both higher than the lower end of the partition plate (13).

2. The odor degradation device for biological filters according to claim 1, characterized in that, The six degradation spaces (14) on the left side are connected to the seven degradation spaces (14) in sequence through the first air guide tube group (3), and the first air guide tube group (3) is connected to these seven aeration components (2).

3. The odor degradation device for a biological filter according to claim 2, characterized in that, The six degradation spaces (14) on the right side are connected to the seven degradation spaces (14) in sequence through the second air guide tube group (4), and the second air guide tube group (4) is connected to these seven aeration components (2).

4. The odor degradation device for biological filters according to claim 3, characterized in that, The first air guide tube group (3) includes an inverted first air guide tube (31), a second air guide tube (32), a third air guide tube (33), a fourth air guide tube (34), a fifth air guide tube (35), and a sixth air guide tube (36); the first air guide tube (31) connects the degradation space (14) on the left and the degradation space (14) on the left-sixth; the second air guide tube (32) connects the degradation space (14) on the left-sixth and the degradation space (14) on the left-second; the third air guide tube (33) connects the degradation space (14) on the left-second and the degradation space (14) on the left-fifth; the fourth air guide tube (34) connects the degradation space (14) on the left-fifth and the degradation space (14) on the left-third; the fifth air guide tube (36) connects the degradation space (14) on the left-fifth and the degradation space (14) on the left-third; the fifth air guide tube (36) connects the degradation space (14) on the left-sixth and the degradation space (14) on the left-third; the sixth air guide tube (36) connects the degradation space (14) on the left-sixth and the degradation space (14) on the left-third; the sixth air guide tube (36) connects the degradation space (14) on the left-sixth and the degradation space (14) on the left-sixth ... The air duct (35) connects the degradation space (14) on the left third and the degradation space (14) on the left fourth; the sixth air duct (36) connects the degradation space (14) on the left fourth and the degradation space (14) in the center; an axial flow fan (37) is installed at the upper end of the first air duct (31), the second air duct (32), the third air duct (33), the fourth air duct (34), the fifth air duct (35) and the sixth air duct (36); the lower ends of the first air duct (31), the second air duct (32), the third air duct (33), the fourth air duct (34), the fifth air duct (35) and the sixth air duct (36) are respectively connected to the aeration component (2) below them.

5. The odor degradation device for a biological filter according to claim 1, characterized in that, The side wall of the closed degradation chamber (1) of the biofilter is provided with several observation windows (15) and several manholes (16).

6. The odor degradation device for a biological filter according to claim 1, characterized in that, The structure of the second air guide tube group (4) is symmetrically arranged with the structure of the first air guide tube group (3).

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