Spiral hollow filler, composite ecological active biological filler as well as preparation method and application of spiral hollow filler and composite ecological active biological filler

Abstract

The invention belongs to the technical field of sewage or waste gas treatment, and particularly relates to a spiral hollow filler, a composite ecological active biological filler and a preparation method and application thereof. The spiral hollow filler has a large specific surface area, the spiral hollow filler is used for loading adsorption particles, the loading capacity of the adsorption particles can be further improved, and then the adsorption performance and the biodegradability of the composite filler are improved. When the biological filler is applied to a moving bed (or fixed bed) bio-membrane reactor, the surface roughness of the biological filler can be further improved, the biological adhesion capacity is enhanced, the loading capacity of microorganisms is further improved, and the treatment capacity of the moving bed (or fixed bed) bio-membrane reactor is improved.

Description

Technical Field

[0001] This invention belongs to the field of wastewater or waste gas treatment technology, specifically relating to a spiral hollow packing material, a composite ecological active biological packing material, its preparation method and application. Background Technology

[0002] Moving bed (or fixed bed) biofilm reactor technology increases the biomass and biodiversity of the reactor by adding a certain amount of biological packing material, thereby improving the reactor's treatment efficiency. Microorganisms grow on the surface of the biological carrier in the form of a biofilm, avoiding the influence of hydraulic retention time, thus providing a better living environment for microorganisms with longer sludge ages. This also improves the diversity and richness of microorganisms within the reactor.

[0003] Biological packing materials serve as sites for the enrichment of microorganisms. Traditional biological packing materials are made from plastics such as polyethylene and polypropylene, and are processed through extrusion / injection molding. They are characterized by low cost, high output, good fluidization effect, high mechanical strength, and good mass transfer effect, and are therefore more widely used in actual wastewater treatment.

[0004] However, due to the inherent limitations of polymer materials such as polyethylene and polypropylene (e.g., hydrophobicity and negative charge), the amount of biofilm attached is relatively small, which affects the processing performance of moving bed (or fixed bed) biofilm reactors and restricts their application in practical engineering. Summary of the Invention

[0005] The purpose of this invention is to provide a spiral hollow packing material, a composite eco-active biological packing material, its preparation method and application. The spiral hollow packing material provided by this invention can further increase the loading of adsorbent particles, thereby improving the adsorption performance and biodegradation capacity of the composite eco-active biological packing material.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a spiral hollow packing material, comprising a first hollow column 1 and a second hollow column 2 sleeved outside the first hollow column 1; The first hollow column 1 and the second hollow column 2 are connected by a plurality of connecting plates 3 distributed along the axial direction; the plurality of connecting plates 3 penetrate the first hollow column 1; and a plurality of partitions 7 are respectively provided on both sides of each connecting plate 3. The inner wall of the second hollow column 2 is provided with a first partition 4 extending toward the first hollow column 1, and the first partition 4 is located between two adjacent connecting plates 3. The outer wall of the first hollow column 1 is provided with a through partition 6 extending toward the second hollow column 2, and the through partition 6 is located between two adjacent connecting plates 3; The second hollow column 2 has a spiral hollow groove on its cylindrical surface.

[0007] Preferably, the first hollow column 1 has a length of 30±0.1mm, an outer diameter of 8±0.1mm, and a wall thickness of 0.2±0.05mm; The length of the through partition 6 is 30±0.1mm, the width is 3±0.05mm, and the thickness is 0.2±0.05mm; the through partitions 6 are evenly distributed between two adjacent connecting plates 3.

[0008] Preferably, the second hollow column 2 has a length of 30±0.1mm, an outer diameter of 30±0.1mm, and a wall thickness of 0.2±0.05mm; The first partition 4 has a length of 30±0.1mm, a width of 4.0±0.1mm, and a thickness of 0.2±0.05mm; The inner wall of the second hollow column 2 is also provided with a second partition 5 extending toward the first hollow column 1; the first partition 4 and the second partition 5 between two adjacent connecting plates 3 are alternately distributed at equal intervals; The second partition 5 has a length of 30±0.1mm, a width of 1.0±0.1mm, and a thickness of 0.2±0.1mm.

[0009] Preferably, the connecting plate 3 has a length of 30±0.1mm, a width of 11±0.1mm, and a thickness of 0.3±0.05mm; The length of the partition 7 is 30±0.1mm, the width is 1.0±0.1mm, and the thickness is 0.2±0.05mm; on each connecting plate 3, the partitions 7 on the same side are evenly distributed, and the partitions 7 on opposite sides are staggered. The partition 7 is located between the first hollow column 1 and the second hollow column 2; The second hollow column 2 is also provided with a plurality of axially arranged protrusions 8 on its cylindrical surface; the protrusions 8 are arranged at equal intervals and the height of the protrusions 8 is 0.5mm; The spiral groove has a depth of 1.5±0.1mm and a width of 2.5±0.1mm.

[0010] Preferably, the spiral perforated filler is made of polypropylene or polyethylene; The specific surface area of ​​the spiral perforated packing is 1350 m². 2 / m 3 The specific gravity of the pile is 110 kg / m³. 3 The packing porosity is 90.62%, and the number of packing particles is 42,000 / m³. 3 .

[0011] The present invention also provides a composite eco-active biological filler, comprising a matrix and adsorbent particles, wherein the adsorbent particles are adhered to the outer and inner surfaces of the matrix by a water-soluble binder; The substrate is the spiral hollow filler described in the above technical solution; The adsorbent particles include at least one of zeolite and activated carbon.

[0012] Preferably, the zeolite has an adsorption capacity of ≥8% and a bulk density of 1.80 / cm³. 3 Specific surface area is 600m² 2 / g, particle size is 200 mesh; The activated carbon has an adsorption capacity of ≥15% and a bulk density of 0.45 g / cm³. 3 Specific surface area is 1500 m² 2 / g, particle size is 200 mesh; The adsorbent particles in the composite eco-active biological filler have a mass percentage of 6-8%; The water-soluble binder includes a polyurethane water-soluble binder; the water-soluble binder has a mass percentage content of 5-10% in the composite eco-active biological filler.

[0013] This invention also provides a method for preparing the composite eco-active biological filler described in the above technical solution, comprising the following steps: A water-soluble adhesive is mixed with water to obtain a water-soluble adhesive solution; The water-soluble adhesive solution is atomized and then sprayed onto the surface of a substrate in a stirred state to obtain a substrate coated with the water-soluble adhesive. The adsorbent particles are sprayed a second time onto the surface of the substrate coated with the water-soluble binder while it is in a stirred state, and after curing, the composite ecological active biological filler is obtained.

[0014] Preferably, the stirring speed of the substrate in the stirring state is 20~30 rpm, and the first spraying time is 1~2 min; The stirring speed of the substrate coated with water-soluble adhesive in the stirring state is 20~30 rpm, and the second spraying time is 1~2 min; The curing process is natural curing, and the natural curing time is 8-10 minutes.

[0015] The present invention also provides the application of the composite ecological active biological filler described in the above technical solution or the composite ecological active biological filler prepared by the preparation method described in the above technical solution in wastewater or waste gas treatment.

[0016] This invention provides a spiral perforated packing. The spiral perforated packing provided by this invention has a large specific surface area, which ensures a large contact area between the gas and liquid phases during actual use, increasing the chances of contact and the transfer of pollutants from the gas phase to the liquid phase, thereby improving the packing's decomposition ability.

[0017] This invention also provides a composite ecological active biological packing material, comprising a matrix and adsorbent particles. The adsorbent particles are adhered to the outer and inner surfaces of the matrix by a water-soluble binder. The matrix is ​​the spiral perforated packing material described in the above-mentioned technical solution. The adsorbent particles are selected according to the composition of the gas being treated, including at least one of zeolite and activated carbon. This invention, by loading adsorbent particles onto the surface of a porous matrix, can further increase the specific surface area of ​​the composite packing material, providing sufficient conditions for adequate contact between the gas-liquid and gas-solid phases. It enhances the surface roughness of the biological packing material, which is beneficial for biofilm formation and good growth, and greatly increases and endows the biological packing material with adsorption capacity, facilitating the adsorption of organic components in the gas phase, thereby improving the adsorption performance and biodegradation capacity of the composite packing material. When applied to moving bed (or fixed bed) biofilm reactors, it can further increase the microbial loading and improve the treatment capacity of the moving bed (or fixed bed) biofilm reactor. Attached Figure Description

[0018] Figure 1 This is a top view of the spiral perforated packing structure. Figure 2 This is a front view schematic diagram of the spiral perforated packing material; Figure 3 This is a picture of a real spiral perforated packing material; Figure 4 This is a photograph of the composite eco-active biological packing material obtained in Example 1; Wherein, 1-the outside of the first hollow column, 2-the second hollow column, 3-the connecting plate, 4-the first partition, 5-the second partition, 6-the through partition, 7-the partition piece, 8-the protrusion. Detailed Implementation

[0019] This invention provides a spiral hollow packing material, comprising a first hollow column 1 and a second hollow column 2 sleeved outside the first hollow column 1; The first hollow column 1 and the second hollow column 2 are connected by a plurality of connecting plates 3 distributed along the axial direction; the plurality of connecting plates 3 penetrate the first hollow column 1; and a plurality of partitions 7 are respectively provided on both sides of each connecting plate 3. The inner wall of the second hollow column 2 is provided with a first partition 4 extending toward the first hollow column 1, and the first partition 4 is located between two adjacent connecting plates 3. The outer wall of the first hollow column 1 is provided with a through partition 6 extending toward the second hollow column 2, and the through partition 6 is located between two adjacent connecting plates 3; The second hollow column 2 has a spiral hollow groove on its cylindrical surface.

[0020] In this invention, the length of the first hollow column 1 is preferably 30±0.1mm, the outer diameter is preferably 8±0.1mm, and the wall thickness is preferably 0.2±0.05mm. In this invention, the length of the through-plate 6 is preferably 30±0.1mm, the width is preferably 3±0.05mm, and the thickness is preferably 0.2±0.05mm; the through-plates 6 between adjacent connecting plates 3 are preferably evenly distributed.

[0021] In this invention, the length of the second hollow column 2 is preferably 30±0.1mm, the outer diameter is preferably 30±0.1mm, and the wall thickness is preferably 0.2±0.05mm.

[0022] In this invention, the length of the first partition 4 is preferably 30±0.1mm, the width is preferably 4.0±0.1mm, and the thickness is preferably 0.2±0.05mm. In this invention, the inner wall of the second hollow column 2 is also preferably provided with a second partition 5 extending toward the first hollow column 1; the length of the first partition 4 is greater than the length of the second partition 5; the first partition 4 and the second partition 5 between two adjacent connecting plates 3 are preferably alternately distributed at equal intervals; the length of the second partition 5 is preferably 30±0.1mm, the width is preferably 1.0±0.1mm, and the thickness is preferably 0.2±0.1mm.

[0023] In this invention, the length of the connecting plate 3 is preferably 30±0.1 mm, the width is preferably 11±0.1 mm, and the thickness is preferably 0.3±0.05 mm. In this invention, the length of the partition 7 is preferably 30±0.1 mm, the width is preferably 1.0±0.1 mm, and the thickness is preferably 0.2±0.05 mm; the partitions 7 on the same side of each connecting plate 3 are preferably evenly spaced, and the partitions 7 on opposite sides are preferably staggered; the partitions 7 are located between the first hollow column 1 and the second hollow column 2.

[0024] In this invention, the second hollow column 2 is preferably provided with a plurality of axially arranged protrusions 8 on its cylindrical surface; the protrusions 8 are preferably arranged at equal intervals, and the height of the protrusions 8 is preferably 0.5 mm.

[0025] In this invention, the depth of the spiral groove is preferably 1.5±0.1mm and the width is preferably 2.5±0.1mm.

[0026] In this invention, the spiral perforated packing is preferably made of polypropylene or polyethylene; the specific surface area of ​​the spiral perforated packing is preferably 1350 m². 2 / m 3 The preferred bulk density is 110 kg / m³. 3 The preferred packing porosity is 90.62%, and the preferred packing number is 42,000 per m³. 3 .

[0027] The present invention also provides a composite eco-active biological filler, comprising a matrix and adsorbent particles, wherein the adsorbent particles are adhered to the outer and inner surfaces of the matrix by a water-soluble binder; The substrate is the spiral hollow filler described in the above technical solution; The adsorbent particles include at least one of zeolite and activated carbon.

[0028] In this invention, the zeolite preferably has an adsorption capacity of ≥8% (specifically, the ability to adsorb organic gas molecules) and a bulk density preferably of 1.80 / cm³. 3 The preferred specific surface area is 600 m². 2 / g, with a particle size preferably of 200 mesh. In this invention, the adsorption capacity of the activated carbon is preferably ≥15% (specifically referring to the ability to adsorb organic gas molecules), and the bulk density is preferably 0.45 g / cm³. 3 The preferred specific surface area is 1500 m². 2 / g, with a preferred particle size of 200 mesh.

[0029] In this invention, the mass percentage of the adsorbent particles in the composite ecological active biological filler is preferably 6-8%.

[0030] In this invention, the water-soluble binder preferably includes a polyurethane water-soluble binder; the water-soluble binder preferably has a mass percentage content of 5-10% in the composite eco-active biological filler.

[0031] This invention also provides a method for preparing the composite eco-active biological filler described in the above technical solution, comprising the following steps: A water-soluble adhesive is mixed with water to obtain a water-soluble adhesive solution; The water-soluble adhesive solution is atomized and then sprayed onto the surface of a substrate in a stirred state to obtain a substrate coated with the water-soluble adhesive. The adsorbent particles are sprayed a second time onto the surface of the substrate coated with the water-soluble binder while it is in a stirred state, and after curing, the composite ecological active biological filler is obtained.

[0032] This invention involves mixing a water-soluble binder with water to obtain a water-soluble binder solution. In this invention, the preferred mass ratio of the water-soluble binder to the diluent water is 1:1 to 3.

[0033] After obtaining the water-soluble adhesive solution, the present invention atomizes the water-soluble adhesive solution and performs a first spray coating on the surface of a substrate in a stirred state to obtain a substrate coated with water-soluble adhesive.

[0034] In this invention, the stirring speed of the substrate in a stirred state is preferably 20-30 rpm, and the first spraying time is 1-2 min. In this invention, the thickness of the water-soluble adhesive layer in the substrate coated with the water-soluble adhesive is preferably 20 μm.

[0035] After obtaining the substrate coated with the water-soluble binder, the present invention performs a second spraying of adsorbent particles onto the surface of the substrate coated with the water-soluble binder while it is in a stirred state, and obtains the composite ecologically active biological filler after curing. In the present invention, the stirring speed of the substrate coated with the water-soluble binder while it is in a stirred state is preferably 20~30 rpm, and the second spraying time is preferably 1~2 min.

[0036] In this invention, the curing is preferably natural curing, and the natural curing time is preferably 8 to 10 minutes.

[0037] In this invention, the thickness of the adsorption particle layer in the composite ecological active biological filler is preferably 75 μm.

[0038] This invention also provides the application of the composite ecologically active biological packing material described in the above-described technical solutions, or the composite ecologically active biological packing material prepared by the preparation method described in the above-described technical solutions, in wastewater or waste gas treatment. This invention does not impose any special limitations on the specific implementation methods of the described applications; any method well-known to those skilled in the art can be used.

[0039] Unless otherwise specified, the materials and equipment used in this invention are all commercially available products in the field.

[0040] The technical solutions of this invention will be clearly and completely described below with reference to the embodiments thereof. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0041] The parameters of each raw material in the following examples are shown below: A spiral hollow filler is provided, comprising a first hollow column 1 and a second hollow column 2 sleeved outside the first hollow column 1; the first hollow column 1 has a length of 30mm, an outer diameter of 8mm, and a wall thickness of 0.2mm; the second hollow column 2 has a length of 30mm, an outer diameter of 30mm, and a wall thickness of 0.2mm. The first hollow column 1 and the second hollow column 2 are connected by six axially distributed connecting plates 3; the connecting plates 3 penetrate the first hollow column 1; each connecting plate 3 has three partitions 7 on one side and two partitions 7 on the other side; the connecting plate 3 is 30mm long, 11mm wide, and 0.3mm thick; each partition 7 is 30mm long, 1mm wide, and 0.2mm thick; the partitions 7 on the same side of each connecting plate 3 are evenly spaced, and the partitions 7 on opposite sides are staggered; the partitions 7 are located between the first hollow column 1 and the second hollow column 2. The outer wall of the first hollow column 1 is provided with a through partition 6 extending toward the second hollow column 2, and there are two through partitions 6 between two adjacent connecting plates 3; the length of a single through partition 6 is 30mm, the width is 3mm, and the thickness is 0.2mm; the through partitions 6 between two adjacent connecting plates 3 are evenly distributed. The inner wall of the second hollow column 2 is provided with a first partition 4 and a second partition 5 extending toward the first hollow column 1. There are 3 first partitions and 4 second partitions 5 between two adjacent connecting plates 3, and they are staggered. The length of a single first partition 4 is 30 mm, the width is 4.0 mm, and the thickness is 0.2 mm. The length of a single second partition 5 is 30 mm, the width is 1.0 mm, and the thickness is 0.2 mm. The second hollow column 2 is also provided with 80 protrusions 8 arranged along the axial direction on its cylindrical surface; the protrusions 8 are arranged at equal intervals, and the height of a single protrusion 8 is 0.5mm; The second hollow column 2 has a spiral groove on its surface; the spiral groove has a depth of 1.5 mm and a width of 2.5 mm.

[0042] in, Figure 1 This is a top view schematic diagram of the spiral perforated packing. Figure 2 This is a front view schematic diagram of the spiral perforated packing material; Figure 3 This is a picture of a real spiral perforated packing material; The specific surface area of ​​the spiral perforated packing is 1350 m². 2 / m 3 The specific gravity of the pile is 110 kg / m³. 3 The packing porosity is 90.62%, and the number of packing particles is 42,000 / m³. 3 The material is PP; The zeolite has an adsorption capacity of ≥8% and a bulk density of 1.80 / cm³. 3 Specific surface area is 600m² 2 / g, particle size is 200 mesh; The activated carbon has an adsorption capacity of ≥15% and a bulk density of 0.45 g / cm³. 3 Specific surface area is 1500 m² 2 / g, with a particle size of 200 mesh.

[0043] Example 1 Spiral perforated filler is used to adhere activated carbon particles: A water-soluble adhesive solution is obtained by mixing polyurethane adhesive and water in a mass ratio of 1:1. A certain mass of spiral hollow filler was placed in a uniformly rotating mixer with a certain space at the top. The water-soluble binder solution was atomized and sprayed onto the surface of the spiral hollow filler which was in a stirring state (the rotation speed was 20 rpm and the time was 1 min). The spiral hollow filler coated with water-soluble binder was obtained. The parameter changes of the spiral hollow filler before and after spraying are shown in Table 1. Table 1. Parameter changes before and after spiral perforated filler spraying

[0044] The obtained spiral perforated filler coated with water-soluble binder was placed in another uniformly rotating mixer with a certain space left at the top. Activated carbon particles were sprayed onto the surface of the spiral perforated filler coated with water-soluble binder in a stirring state (the rotation speed was 20 rpm and the time was 1 min). After natural curing, a composite ecological active biological filler with spiral perforated filler and activated carbon particles was obtained. The parameter changes of the spiral perforated filler before and after the activated carbon particles were adhered are shown in Table 2. Table 2. Parameter changes before and after the adhesion of activated carbon to the spiral perforated packing.

[0045] in Figure 4 This is a photograph of the composite ecologically active biological packing material obtained in this embodiment; As can be seen from Example 1, the weight of activated carbon particles adhering to each cubic meter of spiral perforated packing in the obtained composite ecological active biological packing is approximately 9.43 kg, which is equivalent to an increase in the specific surface area of ​​the composite ecological active biological packing by 1.415 × 10⁻⁶. 7 m 2 Based on the adsorption capacity of activated carbon particles being ≥15%, theoretically, the adsorption capacity of each cubic meter of composite ecological activated biological filler is 9.43 × 15% = 1.415 kg / m³. 3 .

[0046] Example 2 Spiral perforated packing material is used to adhere zeolite particles: A water-soluble adhesive solution is obtained by mixing polyurethane adhesive and water in a mass ratio of 1:1. A certain mass of spiral hollow filler was placed in a uniformly rotating mixer with a certain space at the top. The water-soluble binder solution was atomized and sprayed onto the surface of the spiral hollow filler which was in a stirring state (the rotation speed was 20 rpm and the time was 1 min). The spiral hollow filler coated with water-soluble binder was obtained. The parameter changes of the spiral hollow filler before and after spraying are shown in Table 3. Table 3. Parameter changes before and after spiral perforated filler spraying

[0047] The obtained spiral perforated filler coated with water-soluble binder was placed in another uniformly rotating mixer with a certain space left at the top. Zeolite particles were sprayed onto the surface of the spiral perforated filler coated with water-soluble binder in a stirring state (the rotation speed was 20 rpm and the time was 1 min). After natural curing, a spiral perforated filler with zeolite particles and composite ecological active biological filler was obtained. The parameter changes of the spiral perforated filler before and after the zeolite particles were adhered are shown in Table 4. Table 4. Parameter changes before and after zeolite adhesion to the spiral perforated packing.

[0048] As can be seen from Example 2, the weight of the obtained composite ecologically active biological filler after zeolite particles adhere to each cubic meter of spiral perforated filler is approximately 149.50 kg, with an increase of 33.8 kg being the weight of zeolite powder. That is, 33.8 kg of zeolite particles adhere to the original surface area of ​​each of the 42,000 spiral perforated fillers per cubic meter. In other words, the specific surface area of ​​the composite ecologically active biological filler increased by 33.8 × 600 × 1000 = 2.028 × 10⁻⁶. 7 m 2 Based on the adsorption capacity of zeolite particles being ≥8%, the theoretically calculated adsorption capacity of each cubic meter of composite ecological active biological filler is 33.8 × 8% = 2.704 kg / m³. 3 .

[0049] Performance testing Test Example 1 The composite eco-active biological filler obtained in Example 2 was tested; the test results are shown in Figure 5. Table 5 Performance test results of the composite eco-active biological packing material obtained in Example 2

[0050] Note: 22gCOD / (m 2 ·d) indicates that 22 grams of COD are decomposed and removed per square meter per day.

[0051] Test Example 2 The adsorption performance of the composite eco-active biological packing material obtained in Example 1 was tested, and the specific test results are shown below: Equipment composition: fan, small scrubbing tower (with built-in composite ecological active biological filler), circulating water pump, connecting pipes; Testing equipment and methods: Gas is extracted through sampling ports reserved in the inlet and outlet pipelines of a small scrubbing tower and tested using a VOC meter; Gas treatment process: Closed test space → Collection pipeline (inlet concentration sampling point) → Small scrubbing tower (built-in composite biological packing) → Discharge pipeline (outlet concentration sampling point) → Fan → Closed test space; Pollutant composition (mass ratio): xylene: 50%, ethylbenzene: 20%, ethyl acetate: 15%, and n-butanol: 15%; packing volume: 0.072 m³. 3 The effective dwell time is 25.92 seconds; Two consecutive days of testing were conducted, and the specific test results are shown in Tables 6 and 7. Table 6 Test results for Day 1

[0052] 1 ppm is equivalent to 4.4 mg / m³ 3 The pollutant removal rate was 152.33 ppm, the calculated pollutant concentration was 6.96 g / h, and the packing removal load was 96.73 g / m³. 3 ·h; Table 7 Test results for the second day

[0053] 1 ppm is equivalent to 4.4 mg / m³ 3 The pollutant removal rate was 174.60 ppm, the calculated pollutant concentration was 7.98 g / h, and the packing removal load was 110.87 g / m³. 3 ·h.

[0054] The test results above show that the degradation capacity of the composite eco-active biological filler provided by this invention is 96.73~110.87 g / m³. 3 •h, while the domestic standard for the degradation capacity of commonly used biodegradable packing materials is 40g / m³. 3 The degradation capacity of the composite ecological active biological filler provided by this invention is far higher than the standard requirements.

[0055] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, and not all embodiments. Other embodiments can be obtained based on these embodiments without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A spiral perforated packing material, characterized in that, It includes a first hollow column (1) and a second hollow column (2) sleeved outside the first hollow column (1); The first hollow column (1) and the second hollow column (2) are connected by a plurality of connecting plates (3) distributed along the axial direction; the plurality of connecting plates (3) penetrate the first hollow column (1); a plurality of partitions (7) are respectively provided on both sides of each connecting plate (3); The inner wall of the second hollow column (2) is provided with a first partition (4) extending toward the first hollow column (1), and the first partition (4) is located between two adjacent connecting plates (3); The outer wall of the first hollow column (1) is provided with a through partition (6) extending toward the second hollow column (2), and the through partition (6) is located between two adjacent connecting plates (3); The second hollow column (2) has a spiral hollow groove on its column surface.

2. The spiral perforated packing according to claim 1, characterized in that, The first hollow column (1) has a length of 30±0.1mm, an outer diameter of 8±0.1mm, and a wall thickness of 0.2±0.05mm; The length of the through partition (6) is 30±0.1mm, the width is 3±0.05mm, and the thickness is 0.2±0.05mm; the through partitions (6) between two adjacent connecting plates (3) are distributed at equal distances.

3. The spiral perforated packing according to claim 1, characterized in that, The second hollow column (2) has a length of 30±0.1mm, an outer diameter of 30±0.1mm, and a wall thickness of 0.2±0.05mm; The first partition (4) has a length of 30±0.1mm, a width of 4.0±0.1mm, and a thickness of 0.2±0.05mm; The inner wall of the second hollow column (2) is also provided with a second partition (5) extending toward the first hollow column (1); the first partition (4) and the second partition (5) between two adjacent connecting plates (3) are alternately distributed at equal intervals; The second partition (5) has a length of 30±0.1mm, a width of 1.0±0.1mm, and a thickness of 0.2±0.1mm.

4. The spiral perforated packing according to claim 1, characterized in that, The connecting plate (3) has a length of 30±0.1mm, a width of 11±0.1mm, and a thickness of 0.3±0.05mm; The length of the partition (7) is 30±0.1mm, the width is 1.0±0.1mm, and the thickness is 0.2±0.05mm; on each connecting plate (3), the partitions (7) on the same side are evenly distributed, and the partitions (7) on opposite sides are staggered. The partition (7) is located between the first hollow column (1) and the second hollow column (2); The second hollow column (2) is also provided with a plurality of protrusions (8) arranged along the axial direction on its cylindrical surface; the protrusions (8) are arranged at equal intervals and the height of the protrusions (8) is 0.5mm; The spiral groove has a depth of 1.5±0.1mm and a width of 2.5±0.1mm.

5. The spiral perforated packing according to claim 1, characterized in that, The spiral perforated filler is made of polypropylene or polyethylene; The specific surface area of ​​the spiral perforated packing is 1350 m². 2 / m 3 The specific gravity of the pile is 110 kg / m³. 3 The packing porosity is 90.62%, and the number of packing particles is 42,000 / m³. 3 .

6. A composite ecologically active biological filler, characterized in that, It includes a matrix and adsorbent particles, wherein the adsorbent particles are adhered to the outer and inner surfaces of the matrix by a water-soluble binder; The matrix is ​​the spiral perforated filler as described in any one of claims 1 to 5; The adsorbent particles include at least one of zeolite and activated carbon.

7. The composite ecologically active biological filler according to claim 6, characterized in that, The zeolite has an adsorption capacity of ≥8% and a bulk density of 1.80 / cm³. 3 Specific surface area is 600m² 2 / g, particle size is 200 mesh; The activated carbon has an adsorption capacity of ≥15% and a bulk density of 0.45 g / cm³. 3 Specific surface area is 1500 m² 2 / g, particle size is 200 mesh; The adsorbent particles in the composite eco-active biological filler have a mass percentage of 6-8%; The water-soluble binder includes a polyurethane water-soluble binder; the water-soluble binder has a mass percentage content of 5-10% in the composite eco-active biological filler.

8. The method for preparing the composite ecologically active biological filler according to claim 6 or 7, characterized in that, Includes the following steps: A water-soluble adhesive is mixed with water to obtain a water-soluble adhesive solution; The water-soluble adhesive solution is atomized and then sprayed onto the surface of a substrate in a stirred state to obtain a substrate coated with the water-soluble adhesive. The adsorbent particles are sprayed a second time onto the surface of the substrate coated with the water-soluble binder while it is in a stirred state, and after curing, the composite ecological active biological filler is obtained.

9. The preparation method according to claim 8, characterized in that, The stirring speed of the substrate in the stirring state is 20~30 rpm, and the first spraying time is 1~2 min; The stirring speed of the substrate coated with water-soluble adhesive in the stirring state is 20~30 rpm, and the second spraying time is 1~2 min; The curing process is natural curing, and the natural curing time is 8-10 minutes.

10. The application of the composite eco-active biological filler according to claim 6 or 7 or the composite eco-active biological filler prepared by the preparation method according to claim 8 or 9 in wastewater or waste gas treatment.

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