CN117209047A - Immobilized filler for bionic hyperboloid bacteria-promoting algae film hanging - Google Patents
Immobilized filler for bionic hyperboloid bacteria-promoting algae film hanging Download PDFInfo
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- CN117209047A CN117209047A CN202311405200.0A CN202311405200A CN117209047A CN 117209047 A CN117209047 A CN 117209047A CN 202311405200 A CN202311405200 A CN 202311405200A CN 117209047 A CN117209047 A CN 117209047A
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- 239000000945 filler Substances 0.000 title claims abstract description 65
- 241000195493 Cryptophyta Species 0.000 title claims abstract description 48
- 239000011664 nicotinic acid Substances 0.000 title abstract description 10
- 241000894006 Bacteria Species 0.000 claims abstract description 21
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 244000005700 microbiome Species 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 241000233866 Fungi Species 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 230000003592 biomimetic effect Effects 0.000 claims 9
- 239000011248 coating agent Substances 0.000 claims 3
- 238000000576 coating method Methods 0.000 claims 3
- 239000010865 sewage Substances 0.000 abstract description 8
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 235000015097 nutrients Nutrition 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 16
- 229930002868 chlorophyll a Natural products 0.000 description 12
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 12
- 230000012010 growth Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 235000014653 Carica parviflora Nutrition 0.000 description 3
- 241000243321 Cnidaria Species 0.000 description 3
- 238000000149 argon plasma sintering Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000029553 photosynthesis Effects 0.000 description 2
- 238000010672 photosynthesis Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- -1 typically Gyroid Substances 0.000 description 2
- 241000195649 Chlorella <Chlorellales> Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000032770 biofilm formation Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000010261 cell growth Effects 0.000 description 1
- 230000006727 cell loss Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to a bionic hyperboloid immobilized filler for promoting bacteria and algae to form a film, which comprises a filler body and a bacteria and algae symbiotic biological film, wherein the filler body is spherical in shape and has a hyperboloid topological structure and plays a role of supporting as a framework; the hyperboloid topological structure is formed by arranging unit cells, so that highly communicated internal gaps are formed; the surface of the hyperboloid is a concave-convex surface; each point of the hyperboloid has different Gaussian curvatures; the microorganism composed of microalgae and bacteria is adhered on the concave-convex surface of the hyperboloid, and the extracellular polymer is secreted to further adhere the bacteria and algae so as to form the bacteria and algae symbiotic biological membrane. The immobilized filler for the bionic hyperboloid bacteria-promoting algae film adopts a hyperboloid topological structure to ensure that the filler has larger surface area, increases the contact frequency of microorganisms and the filler, and obviously improves the performance of adsorbing and net capturing pollutants. The high porosity and excellent interconnectivity of the filler are beneficial to the permeation of fluid and the exchange of nutrient substances, and the sewage treatment efficiency is improved.
Description
Technical Field
The invention belongs to the field of water treatment materials, and particularly relates to a bionic hyperboloid immobilized filler for promoting bacteria and algae to form a membrane.
Background
Water resource pollution has been a problem of widespread concern in recent years worldwide, and advanced sewage treatment techniques are required to achieve sustainable use of water resources. Algae is of great interest as a low cost organism that can effectively remove contaminants from water. The algae-bacteria symbiotic (ABS) system is the main way of self-purification of natural water bodies. Under illumination, algae capture carbon dioxide dissolved in water or released by respiration of bacteria, producing oxygen through photosynthesis. The oxygen produced by the algae can be used by bacteria to biodegrade the contaminants. In this way, aeration energy costs and carbon dioxide production are reduced.
In order to avoid bacterial cell loss, immobilization technology is commonly used at present to culture microalgae, and living cells of microalgae and bacteria are combined with a solid support or limited in a specific spatial range by using a physical or chemical method to form a bacterial symbiotic system. However, most porous gel of the embedding and fixing method is spherical, has small specific surface area, has no obvious adsorption, net capturing and other properties, has poor treatment effect on suspended pollutants in sewage, and causes suspended pollutant pollution due to the conditions of cracking, microorganism escaping and the like of microorganism carrier particles in the wastewater treatment process; in addition, the diffusion of nutrients in the polymer is additionally resisted, and light penetration caused by dense growth of cells on the inner surface of the porous gel is blocked, so that photosynthesis activity is reduced. Although the adsorption fixing method can increase the contact area between bacteria and algae cells and pollutants, activated sludge can absorb most of light in a bacteria-algae symbiotic system, so that the absorption of algae to light is influenced, meanwhile, the filler cannot regulate and control a light field, and the light shielding benefit of the sludge still can prevent the growth of algae. Therefore, the difficulty in realizing the efficient and stable treatment of domestic sewage by the algae symbiota is to develop a novel carrier suitable for the attached growth of algae.
Disclosure of Invention
The invention provides a bionic hyperboloid immobilized filler for promoting bacteria algae to form a membrane, which aims to solve the problems that carriers are easy to crack, nutrient substances are prevented from diffusing and light penetrating, the surface area is small, pollutants cannot be adsorbed, the sewage treatment effect is not ideal and the like in the prior art.
The invention relates to a bionic hyperboloid immobilized filler for promoting bacteria and algae to form a film, which comprises a filler body and a bacteria and algae symbiotic biological film, wherein the filler body is spherical in shape and has a hyperboloid topological structure and plays a role of supporting as a framework; the hyperboloid topological structure is formed by arranging unit cells, so that highly communicated internal gaps are formed; the surface of the hyperboloid is a concave-convex surface; each point of the hyperboloid has different Gaussian curvatures; the microorganism composed of microalgae and bacteria is adhered on the concave-convex surface of the hyperboloid, and the extracellular polymer is secreted to further adhere the bacteria and algae so as to form the bacteria and algae symbiotic biological membrane.
Preferably, the internal voids of the hyperboloid topology are obtained by introducing voids in the solid material.
Preferably, the gaussian curvature of the hyperboloid is equal to or less than 0.
Preferably, the gaussian curvature of the hyperboloid is the product of the principal curvatures K of the points.
Preferably, the principal curvature K of a certain point of the hyperboloid is represented by K1 and K2, where K1 is the minimum value of the curvature and K2 is the maximum value of the curvature.
Preferably, the concave surface K2<0 and the convex surface K1>0 of the hyperboloid.
Preferably, the hyperboloid topology is Gyroid, diamond, IWP, neovlus, primitive, fischer-Koch S, F-RD, PMY.
Preferably, the porosity of the filler is 60% -80%.
Preferably, the filler body has a diameter of no more than 5cm.
Preferably, the filler body is made of a high polymer material photosensitive resin.
Advantageous effects
The immobilized filler of the bionic hyperboloid bacteria-promoting algae film adopts a hyperboloid topological structure to play a key role in regulating and controlling the internal diffuse light field, and multiple light scattering improves the light absorption efficiency of microalgae. The hyperboloid topological structure enables the filler to have larger surface area, increases the contact frequency of microorganisms and the filler, and obviously improves the performance of adsorbing and capturing pollutants. The high porosity and excellent interconnectivity of the filler are beneficial to the permeation of fluid and the exchange of nutrient substances, and the sewage treatment efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
FIG. 3a is a schematic representation of a coral mineralized microstructure and its corresponding hyperboloid IWP according to the present invention.
FIG. 3b is a schematic representation of the coral mineralized microstructure and its corresponding hyperboloid Gyroid.
FIG. 3c is a schematic representation of a coral mineralized microstructure and its corresponding hyperbolic Diamond according to the present invention.
FIG. 4 is a graph showing changes in chlorophyll a concentration in the reactor system of comparative example 1.
FIG. 5 is a graph showing changes in chlorophyll a concentration in the reactor system of comparative example 2.
FIG. 6 is a graph showing changes in chlorophyll-a concentration in the reactor system of example 1.
FIG. 7 is a graph showing changes in chlorophyll-a concentration in the reactor system of example 2.
FIG. 8 is a graph showing the comparison of chlorophyll-a concentration on the packing in the reactor systems of comparative example 2, example 1, and example 2.
Detailed Description
The present embodiment will be specifically described with reference to fig. 1 to 8.
In the test, the test conditions of comparative example 1, comparative example 2, example 1 and example 2 were the same. Comparative example 2, example 1, example 2 provide a filler to which a mycotic symbiotic biofilm can attach.
Comparative example 1
To verify whether the presence of filler has an accelerating effect on the growth of algae in the reactor, comparative example 1 is blank, i.e. no filler added.
Comparative example 2
Comparative example 2 is a commonly used commercial filler made of polymeric materials. The hollow filler structure is internally and externally provided with three layers of hollow circles, each circle is internally provided with 1 edge, and the outside is provided with 36 edges. Has higher specific surface area, is about 12mm long and has a diameter of about 25mm. Microbial films grown on the surfaces of the fillers are easily detached due to frictional collision between the fillers and water impact, so that the biological films can only grow on the inner surfaces.
Example 1
The immobilized filler for the bionic hyperboloid bacteria-promoting algae film comprises a filler body and a bacteria-algae symbiotic biological film, wherein the filler body is spherical in shape and has a hyperboloid topological structure and plays a supporting role as a framework; the hyperboloid topological structure is formed by arranging unit cells, so that highly communicated internal gaps are formed for fluid permeation and nutrient exchange; the surface of the hyperboloid is a concave-convex surface; each point of the hyperboloid has different Gaussian curvatures; the microorganisms consisting of microalgae and bacteria are adhered on the concave-convex surface of the hyperboloid, and the extracellular polymer is secreted to further adhere the microalgae so as to form a microalgae symbiotic biological membrane; the hyperboloid topological structure can also realize multiple light scattering, improves the light absorption efficiency of the fungus and algae symbiotic biological membrane, and is beneficial to the growth of microalgae and the biochemical treatment of sewage.
And the Gaussian curvature of the hyperboloid is less than or equal to 0.
The gaussian curvature of the hyperboloid is the product of the principal curvatures K of the points.
The principal curvature K of a certain point of the hyperboloid is represented by K1 and K2, K1 is the minimum value of the curvature, and K2 is the maximum value of the curvature.
The concave surface K2<0 and the convex surface K1>0 of the hyperboloid.
In this embodiment, the topology of the unit cell is IWP; in other embodiments, the topology of the sphere filler may be other values that are compatible with the product, typically Gyroid, diamond, IWP, neovlus, primitive, fischer-Koch S, F-RD, PMY.
In this example, the unit cell size was 70%. In other embodiments, the filler has a porosity of 60% to 80%.
In this example, the filler body had a diameter of 2.4cm. In other embodiments, the filler body generally does not exceed 5cm in diameter.
The filler body is made of high polymer material photosensitive resin.
Example 2
The immobilized filler for the bionic hyperboloid bacteria-promoting algae film comprises a filler body and a bacteria-algae symbiotic biological film, wherein the filler body is spherical in shape and has a hyperboloid topological structure and plays a supporting role as a framework; the hyperboloid topological structure is formed by arranging unit cells, so that highly communicated internal gaps are formed for fluid permeation and nutrient exchange; the surface of the hyperboloid is a concave-convex surface; each point of the hyperboloid has different Gaussian curvatures; the microorganisms consisting of microalgae and bacteria are adhered on the concave-convex surface of the hyperboloid, and the extracellular polymer is secreted to further adhere the microalgae so as to form a microalgae symbiotic biological membrane; the hyperboloid topological structure can also realize multiple light scattering, improves the light absorption efficiency of the fungus and algae symbiotic biological membrane, and is beneficial to the growth of microalgae and the biochemical treatment of sewage.
The internal voids of the hyperboloid topology are obtained by introducing voids in the solid material.
And the Gaussian curvature K of the hyperboloid is smaller than or equal to 0.
The gaussian curvature of the hyperboloid is the product of the principal curvatures K of the points.
The principal curvature K of a certain point of the hyperboloid is represented by K1 and K2, K1 is the minimum value of the curvature, and K2 is the maximum value of the curvature.
The concave surface K2<0 and the convex surface K1>0 of the hyperboloid.
In this embodiment, the topology of the unit cell is Diamond; in other embodiments, the topology of the filler may be other values for the compliant product, typically Gyroid, diamond, IWP, neovlus, primitive, fischer-Koch S, F-RD, PMY.
In this example, the unit cell size is 70%; in other embodiments, the filler has a porosity of 60% to 80%.
In this example, the filler body diameter is 2.4cm; in other embodiments, the filler body generally does not exceed 5cm in diameter.
The filler body is made of high polymer material photosensitive resin.
Performance testing and analysis
Comparative example 2, example 1 and example 2 were each put into a 500ml reactor, and the same amount of sludge and algae were inoculated under the same conditions without adding filler in comparative example 1, and chlorella was selected as the algae species. The reactor was placed entirely on a magnetic stirrer and was always under low-speed uniform stirring, the water-changing biofilm formation phase was not performed during the entire test, and the light intensity on the water surface in the beaker was about 6000lux by irradiation with a lamp belt wound around the beaker for 12 hours (from 9:00 to 21:00). Aeration is carried out, and the dissolved oxygen is controlled to be 4-5 mg/L.
Sampling supernatant and suspension of the reactor, detecting chlorophyll a concentration in the supernatant and suspension, and judging the growth condition of microalgae.
The change curves of chlorophyll a in the four groups of reactors are shown in fig. 4-7. As can be seen from the graph, the concentration of chlorophyll a in the suspension in the reactor of comparative example 1 was finally 300ug/L, and the concentration of chlorophyll a in the supernatant was close to that, indicating that the settling performance of the algae was poor when no filler was added. The final chlorophyll a concentrations of the reactors of comparative example 2, example 1 and example 2 were 372ug/L, 380ug/L and 396ug/L, which indicated that the addition of the filler had an effect of promoting the growth of algae in the reactor. In the reactors of comparative example 2, example 1 and example 2, the percentage of chlorophyll a in the supernatant liquid is 64%,39% and 45% respectively, which indicates that the filler of the invention can fix more algae, and is beneficial to improving the settling property of algae, thereby avoiding the loss of algae in a algae symbiotic system.
In combination with fig. 8, the concentrations of chlorophyll a on the fillers in the reactor systems of comparative example 2, example 1 and example 2 are 45.44ug/L,112.66ug/L and 146.11ug/L, respectively, so that the examples of the present invention are more advantageous for the attachment of algae.
The foregoing is merely illustrative of the present invention and is not intended to limit the embodiments of the present invention, and those skilled in the art can easily make corresponding variations or modifications according to the main concept and spirit of the present invention, so that the protection scope of the present invention shall be defined by the claims.
Claims (10)
1. The immobilized filler is characterized by comprising a filler body and a fungus and algae symbiotic biomembrane, wherein the filler body is spherical in shape and has a hyperboloid topological structure and plays a supporting role as a framework; the hyperboloid topological structure is formed by arranging unit cells, so that highly communicated internal gaps are formed; the surface of the hyperboloid is a concave-convex surface; each point of the hyperboloid has different Gaussian curvatures; the microorganism composed of microalgae and bacteria is adhered on the concave-convex surface of the hyperboloid, and the extracellular polymer is secreted to further adhere the bacteria and algae so as to form the bacteria and algae symbiotic biological membrane.
2. The immobilized filler of the biomimetic hyperbolic bacteriostasis algae hanging film according to claim 1, wherein the internal gap of the hyperbolic topological structure is obtained by introducing a gap into a solid material.
3. The immobilized filler of the biomimetic hyperbolic bacteriostasis algae hanging film according to claim 1, wherein the gaussian curvature of the hyperboloid is less than or equal to 0.
4. The immobilized filler of the biomimetic hyperbolic bacteriostasis algae coating according to claim 3, wherein the gaussian curvature of the hyperbolic surface is the product of the principal curvatures K of the points.
5. The immobilized filler of the biomimetic hyperbolic bacteriostasis algae coating according to claim 4, wherein the principal curvature K of a certain point of the hyperbolic surface is represented by K1 and K2, K1 is the minimum value of the curvature, and K2 is the maximum value of the curvature.
6. The immobilized filler of the biomimetic hyperbolic bacteriostasis algae coating according to claim 5, wherein the concave surface K2<0 and the convex surface K1>0 of the hyperboloid.
7. The immobilized filler of the biomimetic hyperbolic bacteriostasis algae hanging film according to claim 1, wherein the hyperboloid topological structure is Gyroid, diamond, IWP, neovlus, primitive, fischer-Koch S, F-RD, PMY.
8. The immobilized filler of the biomimetic hyperbolic bacteriostasis algae hanging film according to claim 1, wherein the porosity of the filler is 60% -80%.
9. The immobilized filler of the biomimetic hyperbolic bacteriostasis algae hanging film according to claim 1, wherein the diameter of the filler body is not more than 5cm.
10. The immobilized filler of the biomimetic hyperboloid bacteriostasis algae hanging film according to claim 1, wherein the filler body is made of high molecular material photosensitive resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311405200.0A CN117209047A (en) | 2023-10-26 | 2023-10-26 | Immobilized filler for bionic hyperboloid bacteria-promoting algae film hanging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311405200.0A CN117209047A (en) | 2023-10-26 | 2023-10-26 | Immobilized filler for bionic hyperboloid bacteria-promoting algae film hanging |
Publications (1)
| Publication Number | Publication Date |
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| CN117209047A true CN117209047A (en) | 2023-12-12 |
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|---|---|---|---|
| CN202311405200.0A Pending CN117209047A (en) | 2023-10-26 | 2023-10-26 | Immobilized filler for bionic hyperboloid bacteria-promoting algae film hanging |
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| Country | Link |
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| CN (1) | CN117209047A (en) |
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2023
- 2023-10-26 CN CN202311405200.0A patent/CN117209047A/en active Pending
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