Microbial packing module for wastewater treatment

Abstract

The utility model discloses a kind of microbial packing modules for wastewater treatment, and its technical scheme main points include several center support columns, center support column is arranged and mutually parallel along up-down direction, and each center support column is installed with several packing components along up-down direction, and packing component includes several annular packing disc and outer ring, annular packing disc is fixedly installed in center support column, outer ring is located at the outer periphery of annular packing disc, and several functional packing fibers are arranged between the outer periphery of annular packing disc and outer ring, one end of functional packing fiber is connected to annular packing disc, and the other end is connected to outer ring. The utility model has the effect of preventing packing fiber winding knot, actively cutting large bubble, improving oxygen transfer efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater biological treatment technology, and more specifically, to a microbial packing module for wastewater treatment. Background Technology

[0002] Currently, in the field of biological wastewater treatment, flexible packing materials are a common and widely used form of biofilm carrier. Their typical structure usually includes one or more central support columns, on which several annular packing discs or similar radial supports are installed. The core of the purification function relies on a large number of flexible packing fibers (such as filaments, bundles, or meshes made of polyethylene, polypropylene, etc.) suspended or bundled on these supports. During operation, these high specific surface area fibers are immersed in wastewater, providing a vast space for the attachment and growth of microorganisms (such as bacteria and protozoa), thus forming a stable biofilm on their surface. Organic pollutants, ammonia nitrogen, and other substances in the wastewater come into full contact with the biofilm, are adsorbed, oxidized, and decomposed by the microorganisms, and are ultimately transformed into harmless substances, thereby achieving effective wastewater purification.

[0003] However, the structural stability and performance maintenance of soft filler fibers face severe challenges under long-term, continuous hydraulic and biological action. Specifically, under continuous water flow shearing and bubble agitation, filler units (such as elastic filaments, combined supports, or bio-tethers) are prone to entanglement and knotting, leading to disruption of their intended spatial arrangement and a significant reduction in effective specific surface area. Therefore, a new solution is needed to address this problem. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a microbial packing module for wastewater treatment, which has the effects of preventing packing fiber entanglement and knotting, actively cutting large air bubbles, and improving oxygen transfer efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a microbial packing module for wastewater treatment, comprising several central support columns arranged in a vertical direction and parallel to each other, each central support column having several packing assemblies installed in a vertical direction, each packing assembly comprising several annular packing discs and an outer ring, the annular packing discs being fixedly installed on the central support columns, the outer ring being located on the outer periphery of the annular packing discs, and several functional packing fibers being arranged between the outer periphery of the annular packing discs and the outer ring, one end of each functional packing fiber being connected to the annular packing disc and the other end being connected to the outer ring.

[0006] By adopting the above scheme, a stable three-dimensional frame is constructed using several parallel central support columns. Multiple packing assemblies, consisting of annular packing discs and outer rings, are installed on each support column along the vertical direction. This structure achieves radially uniform tension and fixation of the functional packing fibers between the outer periphery of the annular packing discs and the outer ring, forming regularly arranged biofilm attachment units. This arrangement not only increases the effective specific surface area of ​​the modules, providing ample and stable attachment space for microbial growth, but also effectively prevents fiber entanglement and collapse through rigid support and radial arrangement, ensuring structural stability and hydraulic channel unobstructed flow during long-term operation. This ensures efficient and stable contact between wastewater and the biofilm, improving overall treatment efficiency.

[0007] The present invention is further configured such that the annular packing disc includes a central connecting part and an elastic skeleton, the annular packing discs are distributed at intervals along the axial direction of the central support column, and the annular packing discs are all detachably fitted onto the central support column through the central connecting part.

[0008] By adopting the above scheme, the modular assembly and flexible adjustment of the annular packing disc are realized through the detachable central connection part, which makes it easy to adjust the distribution density and interlayer spacing of the packing according to actual treatment needs; the structural design of the elastic skeleton enables the packing disc to maintain support rigidity while having a moderate deformation capacity, which can effectively buffer the impact of water flow and adapt to the dynamic load brought about by biofilm growth.

[0009] The present invention is further configured such that the elastic skeleton includes an inner ring one, an inner ring two, and radial spokes, the inner ring one and the inner ring two are arranged coaxially, and a plurality of the radial spokes are evenly distributed along the radial direction of the central connecting part and extend outward, the inner ring one is fixedly connected to the middle end of the radial spokes, and the inner ring two is fixedly connected to the end of the radial spokes.

[0010] By adopting the above scheme, an elastic skeleton composed of coaxial double inner rings and uniformly distributed radial spokes is formed, creating a multi-layered, highly stable fan-shaped support unit. This not only enhances the overall structural rigidity of the packing disc and effectively resists deformation caused by water flow impact, but also ensures that the functional packing fibers can obtain uniform tension support and spatial distribution through the uniform radial distribution of the spokes, thereby forming a stable and highly permeable biofilm growth interface in the entire annular area.

[0011] The present invention is further configured such that the outer ring is a rigid ring structure, the outer ring is coaxially arranged with inner ring one and inner ring two, and is integrally formed with a buckle, the outer edge of the buckle is provided with an outward snap-fit ​​part, the snap-fit ​​part snaps into an adjacent central support column, and is used to support the functional filler.

[0012] By adopting the above scheme, a stable and uniform radial support system is formed by using a rigid outer ring and a coaxially arranged inner ring structure, ensuring that the functional packing maintains its spatial shape under tension for a long time. The outward snap-fit ​​part of the one-piece molded snap-fit ​​structure can form a reliable and quick connection with the adjacent central support column, realizing the stable assembly and overall stress distribution between multiple modules, effectively distributing the water flow impact load, preventing the packing from sagging or shifting, thereby maintaining a high specific surface area and stable fluid channels under complex hydraulic conditions, and improving the long-term operational reliability of the system.

[0013] The present invention is further configured such that the buckle has a C-shaped structure and the buckle opening is oriented toward the central support column.

[0014] By adopting the above scheme, the C-shaped structure gives the buckle good elastic deformation ability, which allows it to smoothly fit into the adjacent central support column through the elastic expansion of the opening during installation. After being in place, it relies on the rebound force of the material itself to achieve self-locking and clamping, forming a stable mechanical connection. This design not only simplifies the assembly and disassembly operations between modules, but also enhances the shear and torsional resistance of the connection node through the clamping effect of surface contact, maintaining the structural integrity and stable processing performance of the entire packing module.

[0015] The present invention is further configured such that the elastic skeleton is elastic along the water flow direction, and is used to cut large air bubbles that are floated up by air.

[0016] By adopting the above scheme, by giving the elastic skeleton a specific elasticity along the direction of water flow, it can generate controlled micro-amplitude vibration or deformation under the action of fluid; when the large bubbles generated by the air flotation process rise and pass through the skeleton, this dynamic elastic structure can actively collide, stretch and cut the bubbles, thereby breaking the large bubbles into microbubbles with smaller particle size and more uniform distribution.

[0017] The present invention is further configured such that the functional filler fiber is a hydrophilic composite fiber, and the diameter of a single fiber of the composite fiber is 0.1 mm.

[0018] By adopting the above scheme, the hydrophilic surface improves the initial attachment and biofilm formation ability of microorganisms, and enhances the biofilm attachment speed and stability; the 0.1 mm ultrafine fiber diameter increases the specific surface area of ​​the filler in a limited space, providing a sufficient attachment interface for microbial growth. At the same time, its moderate diameter ensures the mechanical strength and durability of the fiber, while maintaining good permeability and mass transfer channels, effectively balancing the relationship between high bioburden and low clogging risk.

[0019] The present invention is further configured such that the spacing between two adjacent layers of the annular packing disc is 100mm, and the functional packing fibers of the upper and lower adjacent layers of the annular packing disc are staggered.

[0020] By adopting the above scheme, the 100mm interlayer spacing provides sufficient and uniform vertical channels for the passage of water and air, effectively avoiding local clogging. At the same time, the staggered distribution of functional filler fibers in the upper and lower layers forms a three-dimensional network structure, which not only significantly increases the total effective area for biological attachment, but also forces the fluid to undergo continuous turning and redistribution between layers, enhancing the degree of turbulence and mixing effect, ensuring that wastewater and biofilm are in full contact in three-dimensional space, and improving the module's treatment capacity and operational stability.

[0021] The present invention is further provided that the central connecting part has an inner hole, and the inner hole has anti-slip texture to increase the friction with the central connecting post.

[0022] By adopting the above solution, the anti-slip texture in the inner hole increases the roughness and micro-interlocking of the contact surface, thereby improving the static friction resistance between the annular packing disc and the central support column. This enables a reliable connection without relying on additional fasteners and effectively prevents the packing disc from sliding axially or rotating circumferentially under the impact or vibration of water flow.

[0023] The present invention is further configured such that the annular packing discs on the two adjacent central support columns are arranged in a spatially staggered manner in the radial and circumferential directions.

[0024] By adopting the above scheme, the projections of multiple packing units overlap and interweave on the horizontal plane through a three-dimensional staggered arrangement in the radial and circumferential directions, breaking the regular flow channels formed by the traditional parallel layout and constructing a complex and varied three-dimensional fluid network. This structure forces the water flow and gas-liquid mixture to undergo continuous segmentation, turning and remixing as it flows through the module, effectively extending the hydraulic residence time and enhancing the turbulence of the fluid, thereby improving the mass transfer efficiency and reaction uniformity between pollutants, dissolved oxygen and biofilm, and optimizing the overall treatment efficiency and space utilization of the module.

[0025] In summary, this utility model has the following beneficial effects:

[0026] 1. A three-dimensional rigid frame consisting of a parallel central support column, a detachable annular packing disc, and a rigid outer ring was constructed, and reliable interconnection between modules was achieved through C-shaped buckles, thereby solving the structural problems of traditional soft packing materials being prone to entanglement, balling, and specific surface area reduction under hydraulic impact.

[0027] 2. Through the radial and circumferential three-dimensional staggered arrangement of packing discs on adjacent support columns, and the staggered distribution of functional packing fibers in the upper and lower layers, a complex, dead-zone-free three-dimensional flow channel network is formed. This design forces the fluids (water and air) to continuously change direction, divide, and remix, enhancing turbulence and contact time, ensuring efficient mass transfer of pollutants, dissolved oxygen, and biofilm. Simultaneously, the embedded elastic framework can actively cut large air bubbles, improving oxygen transfer efficiency. Attached Figure Description

[0028] Figure 1 This is a first perspective view of a microbial packing module for wastewater treatment in this embodiment;

[0029] Figure 2 This is a second perspective view of a microbial packing module for wastewater treatment in this embodiment;

[0030] Figure 3 This is a cross-sectional view of the packing assembly in this embodiment.

[0031] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0032] Reference numerals: 1. Central support column; 2. Annular packing disc; 21. Central connection part; 211. Inner hole; 22. Radial spokes; 23. Inner ring one; 24. Inner ring two; 3. Outer ring; 31. Buckle; 311. Functional packing fiber; 5. Functional packing area. Detailed Implementation

[0033] 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.

[0034] This embodiment discloses a microbial packing module for wastewater treatment, referring to... Figures 1-4 As shown, the structure includes several central support columns 1, which are arranged parallel to each other in the vertical direction. Each central support column 1 is equipped with several packing assemblies in the vertical direction. The packing assemblies include several annular packing discs 2 and an outer ring 3, with the annular packing discs 2 fixedly installed on the central support column 1. This structure forms a multi-layered spatial support system with the central support column 1 as the vertical main axis and the annular packing discs 2 as the horizontal expansion units, providing a solid structural foundation for the uniform distribution and stable attachment of subsequent functional packing materials.

[0035] Reference Figure 3As shown, the annular packing disc 2 includes a central connecting portion 21 and an elastic frame surrounding it. Multiple annular packing discs 2 are distributed at certain intervals along the axial direction of the central support column 1. Each annular packing disc 2 is detachably fitted onto the central support column 1 via the central connecting portion 21. To achieve a more stable connection, the central connecting portion 21 has an inner hole 211 with anti-slip texture. This design effectively increases the friction between the annular packing disc 2 and the surface of the central support column 1, preventing axial slippage or circumferential rotation of the annular packing disc 2 due to water flow impact or vibration during operation, thereby ensuring the long-term spatial stability of the multi-layer packing assembly.

[0036] The modular assembly and flexible adjustment of the annular packing disc 2 are achieved through the detachable central connection part 21, which makes it easy to adjust the packing distribution density and interlayer spacing according to actual treatment needs. The structural design of the elastic skeleton enables the packing disc to maintain support rigidity while having a moderate deformation capacity, which can effectively buffer water flow impact and adapt to the dynamic load brought about by biofilm growth, thereby improving the fatigue resistance and operational adaptability of the system.

[0037] The anti-slip texture in the inner hole 211 increases the roughness and micro-interlocking of the contact surface, thereby improving the static friction resistance between the annular packing disc 2 and the central support column 1, thus achieving a reliable connection without relying on additional fasteners, and effectively preventing the packing disc from sliding axially or rotating circumferentially under the impact or vibration of water flow.

[0038] Reference Figure 2 As shown, the spacing between two adjacent annular packing discs 2 is 100mm. This size ensures a compact structure while providing reasonable vertical flow and diffusion space for water flow, air flow, and biofilm growth and renewal. The functional packing fibers 4 of the two adjacent annular packing discs 2 are staggered. This forms a continuous, non-overlapping three-dimensional biological attachment network in the vertical direction, effectively increasing the specific surface area and enhancing the turbulent mixing of the fluid.

[0039] Furthermore, the two annular packing discs 2 on the two adjacent central support columns 1 are arranged in a spatially staggered manner in the radial and circumferential directions. This three-dimensional staggered arrangement allows the packing units on different support columns to interweave and fill each other in the horizontal projection, jointly constructing a multi-layered, dead-zone-free composite flow channel system, which extends the actual fluid path and improves mass transfer efficiency and reactor space utilization.

[0040] The elastic skeleton is made of modified polypropylene (PP) material, which maintains sufficient structural strength while possessing good corrosion resistance and environmental stress resistance. The elastic skeleton includes an inner ring 23, an inner ring 24, and radial spokes 22. The inner ring 23 and the inner ring 24 are arranged coaxially. Several radial spokes 22 are evenly distributed circumferentially along the central connecting part 21 and extend outward along the radial direction of the central connecting part 3. The inner ring 23 is fixedly connected to the middle of the radial spokes 22, and the inner ring 23 is fixedly connected to the end of the radial spokes 22, thereby forming a fan-shaped functional filler area 5 with inner and outer double-layer ring support.

[0041] Most importantly, the modified PP material endows the elastic skeleton with moderate elastic deformation capability along the water flow direction. When large bubbles generated by the air flotation process rise and pass through, the skeleton can undergo slight vibration or deformation under the action of the water flow, thereby colliding, stretching, and cutting the bubbles, breaking them into smaller bubbles. This process not only significantly increases the gas-liquid contact area and improves oxygen mass transfer efficiency, but also helps to enhance local fluid turbulence and optimize reaction conditions.

[0042] Reference Figure 3 , Figure 4 As shown, the outer ring 3 is located on the outer periphery of the annular packing disc 2. The outer ring 3 is a rigid annular structure and is coaxially arranged with the inner ring 23 and the inner ring 24. The outer ring 3 is integrally formed with a buckle 31. The outer edge of the buckle 31 is provided with an outwardly facing snap-fit ​​part 311. The snap-fit ​​part 311 snaps into the adjacent central support column 1, thereby providing stable peripheral support for the functional packing 4 and preventing it from sagging and deforming due to its own weight or hydraulic action.

[0043] The snap-fit ​​31 has a C-shaped structure, with its opening facing the central support column 1. This C-shaped structure gives the snap-fit ​​31 good elastic deformation capability, allowing it to smoothly fit into the adjacent central support column 1 during installation through the elastic expansion of the opening. After being in place, it achieves self-locking clamping by relying on the material's own elasticity, forming a stable mechanical connection. This design not only simplifies the assembly and disassembly operations between modules, but also enhances the shear and torsional resistance of the connection node through the clamping effect of surface contact, maintaining the structural integrity and stable processing performance of the entire packing module.

[0044] Several functional filler fibers 4 are arranged between the outer periphery of the annular packing disc 2 and the outer ring 3. The functional filler fibers 4 are hydrophilic composite fibers with a single fiber diameter of 0.1 mm. While ensuring the mechanical strength of the fibers, the specific surface area is greatly increased, which is conducive to the attachment of microorganisms and the formation of biofilm.

[0045] One end of the functional packing fiber 4 is connected to the annular packing disc 2, and the other end is connected to the outer ring 3. It is wound in a continuous wavy pattern around the radial spokes 22, inner ring 1 23, inner ring 24, and outer ring 3. This wavy winding method not only increases the effective length and distribution density of the fiber in a limited space, but also forms undulating fluid channels, which is conducive to enhancing local turbulence, prolonging hydraulic residence time, and promoting full contact and mass transfer of the gas, liquid, and solid phases, thereby improving the overall biological treatment efficiency.

[0046] The functional filler fiber 4 can be supported by the outer ring 3, which can roughly maintain the distribution state of the functional filler fiber 4; in addition, the outer ring 3 can be connected to the adjacent central support column 1 through the buckle 31, thereby maintaining the height position of the outer ring 3 in a roughly stable state, thus maintaining the overall stability of the functional filler fiber 4 and avoiding the risk of entanglement.

[0047] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A microbial packing module for wastewater treatment, characterized in that, It includes several central support columns (1), which are arranged in the vertical direction and are parallel to each other. Each central support column (1) is equipped with several packing components in the vertical direction. The packing assembly includes several annular packing discs (2) and an outer ring (3). The annular packing discs (2) are fixedly installed on the central support column (1). The outer ring (3) is located on the outer periphery of the annular packing discs (2). Several functional packing fibers (4) are arranged between the outer periphery of the annular packing discs (2) and the outer ring (3). One end of the functional packing fiber (4) is connected to the annular packing discs (2), and the other end is connected to the outer ring (3).

2. The microbial packing module for wastewater treatment according to claim 1, characterized in that, The annular packing disc (2) includes a central connecting part (21) and an elastic skeleton. The annular packing discs (2) are distributed at intervals along the axial direction of the central support column (1). The annular packing discs (2) are all detachably fitted onto the central support column (1) through the central connecting part (21).

3. The microbial packing module for wastewater treatment according to claim 2, characterized in that, The elastic frame includes an inner ring one (23), an inner ring two (24) and radial spokes (22). The inner ring one (23) and the inner ring two (24) are arranged coaxially. A number of radial spokes (22) are evenly distributed circumferentially along the central connecting part (21) and extend outward. The inner ring one (23) is fixedly connected to the middle end of the radial spokes (22), and the inner ring two (24) is fixedly connected to the end of the radial spokes (22).

4. The microbial packing module for wastewater treatment according to claim 1, characterized in that, The outer ring (3) is a rigid ring structure. The outer ring (3) is coaxially arranged with the inner ring one (23) and the inner ring two (24) and is integrally formed with a buckle (31). The outer edge of the buckle (31) is provided with an outward snap-fit ​​part (311). The snap-fit ​​part (311) snaps onto the adjacent central support column (1) to support the functional filler fiber (4).

5. A microbial packing module for wastewater treatment according to claim 4, characterized in that, The buckle (31) has a C-shaped structure, and the opening of the buckle (31) is set towards the central support column (1).

6. A microbial packing module for wastewater treatment according to claim 3, characterized in that, The elastic skeleton is elastic along the water flow direction and is used to cut large air bubbles that are floated up by air.

7. A microbial packing module for wastewater treatment according to claim 1, characterized in that, The functional filler fiber (4) is a hydrophilic composite fiber, and the diameter of a single fiber of the composite fiber is 0.1 mm.

8. A microbial packing module for wastewater treatment according to claim 1, characterized in that, The spacing between two adjacent annular packing discs (2) is 100 mm, and the functional packing fibers (4) of the two adjacent annular packing discs (2) are staggered.

9. A microbial packing module for wastewater treatment according to claim 1, characterized in that, The central connecting part (21) has an inner hole (211) inside, and the inner hole (211) has anti-slip texture to increase the friction with the central support column (1).

10. A microbial packing module for wastewater treatment according to claim 1, characterized in that, The annular packing discs (2) on the two adjacent central support columns (1) are arranged in a spatially staggered manner in the radial and circumferential directions.

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