A combined structure of bacteria-algae symbiosis filler

Abstract

The utility model discloses a kind of bacteria-algae symbiosis filler combination structure, the combination structure includes multistage wet curtain type filler body, suspension mounting structure and multistage reaction filter tank;Through micro-porous and passage distributed in multistage wet curtain type filler body, and every level wet curtain type filler body is the wet curtain cloth of multiple pieces interval arrangement, every piece wet curtain cloth is the three-dimensional net structure of multiple layers staggered weaving;Suspension mounting structure includes metal support and hook, metal support is fixed in the pool wall top of multistage reaction filter tank, and wet curtain type filler body is hung on metal support by hook;The top of every level reaction filter tank is set to open structure, and reaction filter tank is filled with biological filter material;The width of wet curtain type filler body is equal to the pool width of corresponding reaction filter tank, and the height of wet curtain type filler body is more than half of the pool height of multistage reaction filter tank.The combination structure can efficiently enrich bacteria-algae, realize carbon source internal circulation, and does not need additional carbon source, and realizes efficient nitrogen and phosphorus removal.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a combined structure of bacteria and algae symbiotic packing material. Background Technology

[0002] The core water quality characteristics of aquaculture wastewater are high levels of ammonia nitrogen and nitrate, but a low carbon-to-nitrogen ratio (C / N). Traditional biological treatment processes require the addition of external carbon sources such as methanol and sodium acetate to achieve deep denitrification, which not only significantly increases operating costs but also poses a risk of secondary pollution caused by excessive carbon source addition.

[0003] While existing technologies have developed solutions for treating aquaculture wastewater using algae or microorganisms, they generally suffer from the following drawbacks: algae and microorganisms mostly grow in a dispersed manner, lacking a stable symbiotic environment and failing to achieve an efficient "oxygen-carbon" cycle; in algae suspension culture systems, algae are difficult to attach and fix, and are lost with the effluent, leading to a decrease in treatment efficiency; suspended algae-bacterial mixtures require additional sedimentation and filtration units, increasing equipment footprint and treatment costs; immobilized microbial packing materials can only provide attachment sites for microorganisms, failing to meet the photosynthetic needs of algae and thus failing to construct a self-circulating micro-ecology. Utility Model Content

[0004] In view of this, the primary objective of this utility model is to overcome the aforementioned defects of the prior art and provide a combined structure of bacteria and algae symbiotic packing material to solve the technical problems of high cost of nitrogen and phosphorus removal, secondary pollution, and inability to construct a self-circulating micro-ecology in the existing aquaculture wastewater treatment process.

[0005] To solve the above problems, the primary objective of this utility model is to provide a combined structure of algae-bacterial symbiotic packing material, including a multi-stage wet curtain packing body, a suspension installation structure, and a multi-stage reaction filter. The multi-stage wet curtain packing body has through-holes and channels distributed inside, and each stage of the wet curtain packing body is a multi-part spaced wet curtain cloth, each of which is a multi-layered interwoven three-dimensional mesh structure. The suspension installation structure includes a metal bracket and hooks. The metal bracket is fixed to the top of the multi-stage reaction filter wall, and the wet curtain packing body is suspended on the metal bracket through the hooks. The top of each stage of the reaction filter is set as an open structure, and the reaction filter is filled with biological filter media; The width of the wet curtain packing body is equal to the width of the corresponding reaction filter, and the height of the wet curtain packing body is more than half the height of the multi-stage reaction filter.

[0006] Preferably, the spacing between adjacent wet curtains is 10cm, the number of weaving layers of the three-dimensional mesh structure is 5-8 layers, and the weaving patterns of adjacent layers intersect at 45°.

[0007] Preferably, the pore size of the micropore is 0.1-0.5 mm, the diameter of the channel is 2-5 mm, and the ratio of the number of micropores to the number of channels is 10:1-15:1.

[0008] Preferably, it also includes a lighting integrated structure, which includes a lamp board bracket and an LED lamp board; the lamp board bracket is a U-shaped metal frame fixed to the top of the metal bracket, and the length of the lamp board bracket is the same as the width of the wet curtain packing body; the LED lamp board is fixed to the inner side of the lamp board bracket by bolts.

[0009] Preferably, the distance between the LED light panel and the wet curtain packing body is 30-50cm.

[0010] Preferably, the LED light panel is elongated, with a length of 1-1.2m and a width of 10-15cm for a single LED light panel; the LED beads on the LED light panel are arranged in a matrix, with a spacing of 2-3cm between the LED beads.

[0011] Preferably, the multi-stage reaction filter includes a primary reaction filter, a secondary reaction filter, and a tertiary reaction filter connected in sequence. The primary reaction filter contains an organic filter media layer located on the upper surface of the biological filter media, and the secondary reaction filter contains an inorganic filter media layer located on the upper surface of the biological filter media.

[0012] Preferably, the suspension installation structure further includes an adjusting bolt, and the metal bracket has an adjusting hole along the vertical direction, with a spacing of 5-10cm between adjacent adjusting holes; the hook is fixed in the adjusting hole by the adjusting bolt to adjust the suspension height of the wet curtain packing body.

[0013] Preferably, it also includes a spray structure, which is an arc-shaped guide plate fixed to the top edge of the wet curtain packing body, and the bending direction of the arc-shaped guide plate is towards the inside of the wet curtain packing body.

[0014] Preferably, the length of the arc-shaped guide plate is the same as the width of the wet curtain packing body, so as to guide the spray water to the central area of ​​the wet curtain packing body.

[0015] Compared with the prior art, this utility model has at least the following beneficial effects: The symbiotic packing structure of this invention includes a multi-stage wet curtain packing body, a suspension installation structure, and a multi-stage reaction filter. The multi-stage reaction filter serves as the core supporting unit, its open top design providing space for the installation of the wet curtain packing body. The biological filter media filled within the filter forms the primary treatment carrier. A metal support is connected to the top of the reaction filter wall via a fixed structure, forming a stable upper support system. Hooks allow for detachable connection between the wet curtain packing body and the metal support. Multiple wet curtains are spaced apart to form each stage of the wet curtain packing body. The multi-layered, interwoven three-dimensional mesh structure of each wet curtain constitutes the core site for symbiotic growth, and the micropores and channels penetrating the three-dimensional mesh structure provide pathways for material exchange. The width of the wet curtain packing body is consistent with the width of the filter, ensuring uniform water flow distribution across the entire surface and preventing short-circuiting. When aquaculture wastewater enters this combined structure, it first comes into contact with the biological filter media in the reaction filter tank for preliminary physical interception and microbial degradation. The pre-treated wastewater then comes into contact with the wet curtain packing body through spraying or natural flow. The wastewater diffuses in the three-dimensional mesh structure of the wet curtain cloth, achieving uniform distribution through micropores and channels. Since the height of the wet curtain cloth is more than half the height of the tank, it ensures that the wastewater and the packing have sufficient contact time. The spacing of multiple wet curtain cloths allows water and air to circulate freely between the curtains, forming a virtuous cycle. Through this multi-stage filtration, the wastewater is treated step by step, reducing the concentration gradient of pollutants. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the bacterial-algae symbiotic packing material combination in the embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the primary reaction filter in an embodiment of this utility model; Figure 3 This is a schematic diagram of the suspension mounting structure in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structural frame of the integrated light-emitting structure mounted on a metal bracket in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1-Wet curtain packing body; 11-Wet curtain cloth; 2-Suspension mounting structure; 21-Metal bracket; 211-Adjustment hole; 22-Hook; 23-Adjustment bolt; 3-Reaction filter; 31-Primary reaction filter; 32-Secondary reaction filter; 33-Tertiary reaction filter; 4-Integrated lighting structure; 41-Lamp panel bracket; 42-LED lamp panel; 5-Spray structure; 6-Biological filter media; 7-Organic filter media layer; 8-Inorganic filter media layer. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The terms “upper,” “lower,” “left,” “right,” and similar expressions used in this document are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Please see Figure 1-4 As shown, this utility model embodiment provides a bacterial-algae symbiotic packing material combination structure, which includes a multi-stage wet curtain packing material body 1, a suspension installation structure 2, and a multi-stage reaction filter 3, wherein: The multi-stage wet curtain packing body 1 has through-holes and channels distributed inside, and each stage of the wet curtain packing body 1 consists of multiple spaced wet curtain cloths 11, each of which is a multi-layered interwoven three-dimensional mesh structure; the suspension installation structure 2 includes a metal bracket 21 and a hook 22, the metal bracket 21 is fixed to the top of the tank wall of the multi-stage reaction filter 3, and the wet curtain packing body 1 is suspended on the metal bracket 21 by the hook 22; the top of each stage of the reaction filter 3 is set as an open structure, and the reaction filter 3 is filled with biological filter media 6; the width of the wet curtain packing body 1 is equal to the width of the corresponding reaction filter 3, and the height of the wet curtain packing body 1 is more than half of the height of the reaction filter 3.

[0023] In this specific embodiment, the multi-stage reaction filter 3 serves as the core supporting unit. Its open top design provides a spatial basis for the installation of the wet curtain packing body 1. The biological filter media 6 filled in the tank forms the primary treatment carrier. The metal support 21 is connected to the top of the tank wall of the reaction filter 3 through a fixed structure, forming a stable upper support system. The hook 22 is used to realize the detachable connection between the wet curtain packing body 1 and the metal support 21. Multiple wet curtain cloths 11 are arranged at intervals to form each stage of the wet curtain packing body 1. The multi-layered interwoven three-dimensional mesh structure of each wet curtain cloth 11 constitutes the core site for bacterial and algal symbiosis, and the micropores and channels penetrating the three-dimensional mesh structure provide pathways for material exchange. The width of the wet curtain packing body 1 is consistent with the width of the tank, which can ensure uniform water flow distribution across the entire tank surface and avoid short-circuiting.

[0024] When aquaculture wastewater enters this combined structure, it first comes into contact with the biological filter media 6 in the reaction filter tank 3 for preliminary physical interception and microbial degradation. The pre-treated wastewater then comes into contact with the wet curtain packing body 1 through spraying or natural flow. The wastewater diffuses in the three-dimensional mesh structure of the wet curtain cloth 11 and achieves uniform distribution through micropores and channels. Since the height of the wet curtain cloth 11 is more than half the height of the tank, it ensures that the wastewater and the packing have sufficient contact time. The spacing of multiple wet curtain cloths 11 allows water and air to circulate freely between the curtains, forming a virtuous cycle. In this way, through multi-stage filtration, the wastewater is treated step by step, and the concentration gradient of pollutants is reduced.

[0025] It should be noted that the complex mesh structure formed by the multi-layered interlacing provides diverse attachment sites for bacteria and algae. The micropores are suitable for bacterial colonization, while the channels are suitable for algal growth, thus meeting the survival needs of different microorganisms and significantly improving the attachment efficiency of bacteria and algae.

[0026] In addition, the spaced arrangement of the wet curtain 11 eliminates the shielding effect of water flow and air flow, improves the transfer efficiency of dissolved oxygen, and solves the problem of local oxygen deficiency in traditional dense packing materials.

[0027] Each stage of the reaction filter 3 forms an independent treatment unit with the corresponding wet curtain packing. Through the gradient distribution of pollutant concentration, it achieves step-by-step degradation, and the total nitrogen removal rate is significantly improved compared with the single-stage structure.

[0028] Specifically, please refer to Figure 1 As shown, in some embodiments of this utility model, the spacing between adjacent wet curtains 11 is 10cm, the number of weaving layers of the three-dimensional mesh structure is 5-8 layers, and the weaving patterns of adjacent two layers intersect at 45°.

[0029] In this embodiment, when each wet curtain 11 is fixed on the metal support 21 at the top of the multi-stage reaction filter 3 by hooks 22, the horizontal spacing between adjacent wet curtains is strictly controlled to be 10cm. This spacing is based on the synergy of water flow, air flow and light, ensuring that the water flow can evenly cover the surface of each wet curtain 11 when it falls from the spray system, while avoiding water flow stagnation or short circuit between the curtains; at the same time, the longitudinal spacing needs to reserve a channel for the flow of air (including oxygen and carbon dioxide) to prevent the dense wet curtains 11 from causing local gas blockage.

[0030] When the aquaculture wastewater is pumped to the top of the wet curtain 11 by the spray pump, the water flows downward along the surface of the wet curtain 11 under the action of gravity. There will be no water flow overlap due to the close proximity of adjacent curtains, ensuring that each wet curtain 11 can independently and fully contact the wastewater. At the same time, outside air or airflow in the system can freely penetrate through the 10cm gap. On the one hand, it provides sufficient oxygen for the photosynthesis of algae on the surface of the wet curtain 11, and on the other hand, it carries away the carbon dioxide produced by the algae's respiration and transports it to the deeper layers of the wet curtain 11, providing a carbon source for heterotrophic denitrifying bacteria, forming a continuous process of airflow circulation and material exchange.

[0031] Preferably, when each wet curtain fabric 11 is woven with hydrophilic modified fibers (such as modified polyethylene or natural plant composite materials), the base layer is used as a reference, and the fiber patterns of each subsequent layer are arranged at a 45° angle to the previous layer, and a total of 5-8 layers are woven to form a three-dimensional mesh structure.

[0032] The cross-weave design creates non-parallel, non-perpendicular interlacing nodes between fibers. These nodes support each other to form a stable spatial skeleton, while naturally forming through-holes and channels within the skeleton.

[0033] It should be noted that if the number of weaving layers in the three-dimensional mesh structure is too small, the skeleton will be insufficient in strength and easily deformed by the impact of water flow; if the number of weaving layers in the three-dimensional mesh structure is too large, it will increase the penetration resistance of tailwater and airflow and reduce mass transfer efficiency.

[0034] Specifically, please refer to Figure 1 As shown, in some embodiments of this utility model, the pore diameter of the micropore is 0.1-0.5mm, the diameter of the channel is 2-5mm, and the ratio of the number of micropores to the number of channels is 10:1-15:1.

[0035] During the weaving process of the three-dimensional mesh structure of the wet curtain packing body 1, hydrophilic modified fibers are interwoven through 5-8 layers of 45° cross-weave patterns, naturally forming micropores with a pore size of 0.1-0.5 mm. This pore size range is highly compatible with the size of microorganisms (bacterial diameter 0.5-2 μm, algal spore diameter 5-10 μm). It avoids hindering microorganisms from entering and colonizing due to excessively small pore sizes (<0.1 mm) and prevents microorganisms from being unable to attach due to excessively large pore sizes (>0.5 mm). When the aquaculture wastewater first comes into contact with the packing, heterotrophic denitrifying bacteria, nitrifying bacteria, and algal spores in the water will enter the micropores with the water flow. The hydrophilic surface of the micropore inner wall can adsorb microorganisms through hydrogen bonding, forming an initial biofilm. As the operation time progresses, microorganisms multiply in the micropores, gradually forming a stable microbial community aggregation area. Furthermore, the closed nature of the micropores can provide a local anaerobic environment for anaerobic bacteria (such as denitrifying bacteria), meeting their metabolic needs.

[0036] NH4 in aquaculture wastewater + NO3 - PO4 3- Small molecule pollutants (diameter <0.01 mm) can diffuse into the micropores, come into contact with microorganisms inside, and be degraded. Aerobic nitrifying bacteria utilize the oxygen produced by algae to degrade NH4+. + Converted to NO3 - Anaerobic denitrifying bacteria utilize the CO2 produced by algal respiration to convert NO3 into nitrogen. - It is converted into N2; at the same time, small molecule products (such as H2O and CO2) produced by microbial metabolism can diffuse out of the micropores in the reverse direction, enter the channel and be discharged with the water flow or air flow.

[0037] The pore size design of 0.1-0.5mm ensures efficient material exchange for the entry of pollutants and the discharge of products, avoiding the situation where pollutants are not fully degraded and flow out due to excessively large pore size, or where material exchange is blocked and metabolic products accumulate and inhibit microbial activity due to excessively small pore size.

[0038] The channels are formed by a multi-layered, cross-woven fiber skeleton, with a diameter of 2-5mm, much larger than micropores, serving as the main transmission channel for aquaculture wastewater and airflow. When wastewater is sprayed down from the top of the wet curtain, most of the water flows downwards along the channels. The larger diameter of the channels prevents water flow from stagnating due to excessive resistance, ensuring that the wastewater is evenly distributed throughout the entire packing body; simultaneously, external air or airflow within the system (containing O2) is also transported. 2、 CO2 can quickly penetrate the packing material along the channel, providing sufficient O2 for the photosynthesis of algae on the surface of the wet curtain, and transporting the CO2 produced by the algae to the vicinity of the micropores in the deep layer of the packing material, thus supplementing the carbon source for the denitrifying bacteria in the micropores.

[0039] The 2-5mm diameter design balances mass transfer efficiency and structural strength. If the diameter is <2mm, the channel is easily blocked by tiny impurities carried by the water flow (such as uneaten feed and fecal particles in aquaculture wastewater). If the diameter is >5mm, it will reduce the supporting strength of the fiber skeleton and cause the filler structure to deform.

[0040] Specifically, please refer to Figure 4 As shown, in some embodiments of this utility model, the bacterial-algae symbiotic packing structure further includes a light-integrated structure 4, which includes a lamp board bracket 41 and an LED lamp board 42. The lamp board bracket 41 is a U-shaped metal frame fixed to the top of the metal bracket 21, and the length of the lamp board bracket 41 is consistent with the width of the wet curtain packing body 1. The LED lamp board 42 is fixed to the inner side of the lamp board bracket 41 by bolts.

[0041] In this embodiment, when the system is running (especially in scenarios with no natural light indoors or insufficient outdoor light), the LED light panel 42 is activated and outputs a specific spectrum (e.g., a combination of red and blue light, with red light at 620-660nm and blue light at 450-470nm). This spectrum highly matches the absorption peaks of chlorophyll a and chlorophyll b in algae, which can efficiently activate the photosynthesis of algae. After absorbing light energy, the algae will absorb NH4 in the aquaculture wastewater. + NO3 - PO4 3- It is converted into its own biomass and produces O2 at the same time. The U-shaped support's enclosed design allows light to shine from the top and both sides of the wet curtain 11 simultaneously, avoiding the blind spots on the back of the wet curtain caused by traditional unilateral lighting. This ensures that algae from the surface of the wet curtain 11 to a depth of 5-10mm can receive sufficient light, thus improving photosynthetic efficiency.

[0042] Specifically, please refer to Figure 4 As shown, in some embodiments of this utility model, the distance between the LED light panel 42 and the wet curtain packing body 1 is 30-50cm.

[0043] Therefore, this spacing allows the light emitted by the LED light panel 42 to cover the surface of the wet curtain filler in a fan-shaped diffusion manner, with a light diffusion angle of 60°-80°. The illumination areas of adjacent light panels can effectively overlap, avoiding the occurrence of blind spots in illumination.

[0044] Specifically, please refer to Figure 4 As shown, in some embodiments of this utility model, the LED light board 42 is long and narrow, with a length of 1-1.2m and a width of 10-15cm for a single LED light board 42; the LED beads on the LED light board 42 are arranged in a matrix, with a spacing of 2-3cm between the LED beads.

[0045] Therefore, by precisely matching the length of the LED light panel with the width of the evaporative cooling pad, the light intensity at the edge of the evaporative cooling pad reaches more than 90% of that at the center, thus reducing the algae biomass density at the edge from 10 g / m³. 2 Increased to 16g / m 2 This reduces the difference from the central area. The width design improves the heat dissipation efficiency of the lamp board, stabilizes the operating temperature of the lamp beads at around 55℃, extends the lifespan of the lamp beads, and reduces the frequency of replacement.

[0046] Specifically, please refer to Figure 1 As shown, in some embodiments of this utility model, the multi-stage reaction filter 3 includes a primary reaction filter 31, a secondary reaction filter 32 and a tertiary reaction filter 33 connected in sequence. The primary reaction filter 31 is provided with an organic filter media layer 7 located on the upper surface of the biological filter media 6, and the secondary reaction filter 32 is provided with an inorganic filter media layer 8 located on the upper surface of the biological filter media 6.

[0047] In this embodiment, the primary reaction filter 31, the secondary reaction filter 32, and the tertiary reaction filter 33 are connected sequentially by pipelines to form a series treatment structure. Aquaculture effluent first enters the primary reaction filter 31, is treated by the organic filter media layer 7 and the underlying biological filter media 6, and then is pumped to the secondary reaction filter 32. There, it is further treated by the inorganic filter media layer 8 and the biological filter media 6, and finally enters the tertiary reaction filter 33 (usually filled with composite biological filter media) for deep purification. This series structure ensures that the concentration of pollutants in the effluent decreases gradually along the water flow direction, preventing incomplete treatment due to excessive load on a single-stage filter. Simultaneously, each filter has an independent drainage and backwashing system, allowing adjustment of operating parameters (such as backwashing cycle and intensity) according to the characteristics of different filter media, ensuring that the filter media maintains high-efficiency treatment capacity over a long period.

[0048] Specifically, please refer to Figure 3 As shown, in some embodiments of this utility model, the suspension installation structure 2 also includes an adjusting bolt 23. An adjusting hole 211 is provided on the metal bracket 21 along the vertical direction, and the distance between adjacent adjusting holes 211 is 5-10cm. The hook 22 is fixed in the adjusting hole 211 by the adjusting bolt 23 to adjust the suspension height of the wet curtain packing body 1.

[0049] In this embodiment, the metal bracket 21 has adjustment holes 211 vertically arranged, and the spacing between adjacent holes is strictly controlled at 5-10cm. This spacing not only meets the adjustment accuracy for different water depth scenarios (the water level fluctuation of aquaculture tailwater is usually 5-15cm), but the minimum spacing also ensures fine-tuning needs. Secondly, it avoids the decrease in strength of the metal bracket 21 due to excessively small hole spacing (e.g., <5cm), while excessively large spacing (e.g., >10cm) will not be able to accurately match water level changes. The diameter of the adjustment hole 211 is adapted to the outer diameter of the adjustment bolt 23, ensuring that there is no obvious gap when the bolt passes through (avoiding shaking) and that it can be flexibly disassembled.

[0050] Specifically, please refer to Figure 1 , 2 As shown, in some embodiments of this utility model, the bacterial-algae symbiotic packing combination structure further includes a spray structure 5, which is an arc-shaped guide plate fixed to the top edge of the wet curtain packing body 1, and the bending direction of the arc-shaped guide plate is towards the inner side of the wet curtain packing body 1.

[0051] Therefore, the curved surface can change the flow trajectory of the spray water, changing the water flow from "vertical falling" to "slanted spraying along the tangent of the curved surface". The spray angle is 30°-45° with the surface of the wet curtain. This angle can ensure that the water flow evenly covers the surface of the wet curtain, and can also avoid the water flow directly washing the wet curtain and causing the biofilm to fall off due to the angle being too large, or the water flow concentrating in the top area of ​​the wet curtain due to the angle being too small.

[0052] Specifically, in some embodiments of this utility model, the length of the arc-shaped guide plate is consistent with the width of the wet curtain packing body 1, so as to guide the spray water to the middle area of ​​the wet curtain packing body 1.

[0053] Therefore, the length of the arc-shaped guide plate is exactly the same as the width of the wet curtain packing body 1, ensuring that the top of each section of the wet curtain cloth can receive a uniform water flow supply, and avoiding gaps in the edge water flow due to insufficient length of the guide plate.

[0054] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A symbiotic packing structure for bacteria and algae, characterized in that, Includes a multi-stage wet curtain packing body, a suspended installation structure, and a multi-stage reaction filter; The multi-stage wet curtain packing body has through-holes and channels distributed inside, and each stage of the wet curtain packing body is a multi-part spaced wet curtain cloth, each of which is a multi-layered interwoven three-dimensional mesh structure. The suspension installation structure includes a metal bracket and hooks. The metal bracket is fixed to the top of the multi-stage reaction filter wall, and the wet curtain packing body is suspended on the metal bracket through the hooks. The top of each stage of the reaction filter is set as an open structure, and the reaction filter is filled with biological filter media; The width of the wet curtain packing body is equal to the width of the corresponding reaction filter, and the height of the wet curtain packing body is more than half the height of the multi-stage reaction filter.

2. The bacterial-algae symbiotic packing material combination structure according to claim 1, characterized in that, The spacing between adjacent wet curtains is 10cm, and the three-dimensional mesh structure has 5-8 woven layers, with the weaving patterns of adjacent layers intersecting at 45°.

3. The bacterial-algae symbiotic packing material combination structure according to claim 1, characterized in that, The pore size of the micropore is 0.1-0.5 mm, the diameter of the channel is 2-5 mm, and the ratio of the number of micropores to the number of channels is 10:1-15:

1.

4. The bacterial-algae symbiotic packing material combination structure according to claim 1, characterized in that, It also includes a lighting integrated structure, which includes a lamp board bracket and an LED lamp board; the lamp board bracket is a U-shaped metal frame fixed to the top of the metal bracket, and the length of the lamp board bracket is the same as the width of the wet curtain packing body; the LED lamp board is fixed to the inner side of the lamp board bracket by bolts.

5. The bacterial-algae symbiotic packing material combination structure according to claim 4, characterized in that, The distance between the LED light panel and the wet curtain packing body is 30-50cm.

6. The bacterial-algae symbiotic packing material combination structure according to claim 4, characterized in that, The LED light panel is long and narrow, with a length of 1-1.2m and a width of 10-15cm for a single panel; the LED beads on the LED light panel are arranged in a matrix, with a spacing of 2-3cm between the beads.

7. The bacterial-algae symbiotic packing material combination structure according to claim 1, characterized in that, The multi-stage reaction filter includes a primary reaction filter, a secondary reaction filter, and a tertiary reaction filter connected in sequence. The primary reaction filter contains an organic filter media layer on the upper surface of the biological filter media, and the secondary reaction filter contains an inorganic filter media layer on the upper surface of the biological filter media.

8. The bacterial-algae symbiotic packing material combination structure according to claim 1, characterized in that, The suspension installation structure also includes adjusting bolts. The metal bracket has adjusting holes along the vertical direction, and the spacing between adjacent adjusting holes is 5-10cm. The hook is fixed in the adjusting hole by the adjusting bolts to adjust the suspension height of the wet curtain packing body.

9. The bacterial-algae symbiotic packing material combination structure according to claim 1, characterized in that, It also includes a spray structure, which is an arc-shaped guide plate fixed to the top edge of the wet curtain packing body, and the bending direction of the arc-shaped guide plate is towards the inside of the wet curtain packing body.

10. The bacterial-algae symbiotic packing material combination structure according to claim 9, characterized in that, The length of the arc-shaped guide plate is the same as the width of the wet curtain packing body, so as to guide the spray water to the central area of ​​the wet curtain packing body.

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