KR100780194B1 - The Fluidized BioFilm Medias - Google Patents

Abstract

According to the present invention, a plurality of through holes 6 or tubular pores 4 and 4a of various shapes are formed to increase the specific surface area and flow of water and bubbles well. The two or more outer carriers 1 and 2 forming each other are bonded to each other, and the microbial contact material 3 having a large specific surface area and porosity is filled in the space formed in the outer carriers 1 and 2. And, at least one of the three or more components consisting of the plurality of outer carriers (1, 2) and the microbial contact material (3) is formed of at least one material of a synthetic resin material or ceramic material having a relatively high specific gravity The other component is molded from a synthetic resin material with a relatively low specific gravity, and a weighted flat so as to flow smoothly in the reactor by adjusting the volume composition ratio of materials having different specific gravity. By adjusting the specific gravity, by assembling the assembly 7 and the assembly rod 8 to the outer carrier (1, 2) by inserting the assembly rod (8) into the assembly (7) simply and firmly assembled Related to fluidized bed biofilm carriers.

Fluidized bed, biofilm carrier, specific gravity, fixed bed biofilm carrier

Description

Fluidized BioFilm Medias

1 is an exploded perspective view of a fluidized bed biofilm carrier according to the present invention;

Figure 2 is a perspective view of the combined fluidized bed biofilm carrier according to the present invention,

3 is a cross-sectional view of a first embodiment of a fluidized bed biofilm carrier according to the present invention;

4 is a cross-sectional view of a second embodiment of a fluidized bed biofilm carrier according to the present invention;

5 is a perspective view of a module for contacting microorganisms according to the present invention.

※ Explanation of code for main part of drawing

1: first outer carrier 2: second outer carrier

3: microorganism contact material 4,4a: tubular pores

5: space part 6: through hole

7 Assembling Part 7a: Slope

8: assembly rod 8a: release prevention jaw

9,9a: protection jaw 10: wing feather

11: module

The present invention relates to a fluidized bed biofilm carrier filled in a microbial culture tank, which is easy to control specific gravity, has increased durability, and has optimal conditions for the growth and flow of microorganisms, while being conveniently economically assembled into a fluidized bed biofilm carrier. It is about.

Biofilm carriers with microorganisms attached and used are used in biological reaction processes in the pharmaceutical and food industries, and in multiproliferation processes that decompose organic pollutants in sewage water.Sludge generation and site compared to single growth by flotation. It has many advantages, such as small requirements, flexible response to load fluctuations, and stable treatment water quality. It is divided into fixed bed and fluidized bed.

Stationary phase biofilm carriers require large facility costs, prolonged sludge age of the biofilm, and difficult installation or removal. On the other hand, the fluidized bed biofilm carrier is easy to install because the installation is completed by putting in the reaction tank, the additional amount or easy to remove as needed, the amount of charge can be arbitrarily adjusted, there is an advantage that the sludge age of the biofilm is controlled by itself.

In order to secure the fluidity of the fluidized bed biofilm carrier having such many advantages, the specific gravity of the material for forming the carrier is most preferably around 1.0 relative to the specific gravity of the reaction solution. In addition, in terms of properties such as strength, wear resistance, chemical resistance, biocompatibility and moldability, and economical properties such as price and processing cost of materials, ceramic or synthetic resin materials are suitable for the preparation of fluidized bed biofilm carriers. However, synthetic resin materials such as PE, PP, and nylon have a specific gravity of less than 1.0, resulting in poor fluidity due to the surface floating and lamination.The synthetic resin and ceramic materials such as PVC, PVDC, ABS, and urethane have a high specific gravity and are deposited on the bottom of the reactor. Since the fluidity is poor, it is difficult to realize a biofilm carrier having smooth fluidity with one kind of synthetic resin material or ceramic.

In order to improve the above problem, the present applicant continuously studies the fluidized bed biofilm carrier, and Korea Patent No. 108262 "Microbial contact unit for wastewater treatment with weight control", No. 274538 "Flow for nitrogen / phosphorus removal Phase biofilm carriers and wastewater treatment methods ", No. 3,50049" Fluid biofilm carriers and its manufacturing method ", and 453233" Biofilm carriers with improved specific surface area, biocompatibility, and fluidity "were developed and patented.

The fluidized bed biofilm carrier according to the patent No. 108262 is composed of a synthetic resin case of a network structure, and a microbial contact member filled in the space part of a spherical case in which two hemispherical cases are assembled by a fastening assembly pin and a receiving opening. The microorganism is attached to the case and propagated, and the non-regulatory object is inserted so as to flow smoothly.

However, the fluidized bed biofilm carrier is assembled by fastening the assembling pin and the receiving port formed in the hemispherical case, and there is no buffer part that prevents the separation due to impact and abrasion at the coupling part where the assembly pin and the receiving port are fastened. Collision with the wall surface and the assembly pin is separated and dismantled from the receiving opening occurs, in particular, since the casing is composed of a simple mesh and the specific surface area is not large, the adhesion function of the biofilm is weak and simply to protect the microbial contact material. There is a limited problem.

Patent No. 350049 is for solving the problem of disassembling the binding site of the fluidized bed biofilm carrier according to Patent No. 108262. The two hemispherical cases of a synthetic resin material are heat-sealed against each other to be firmly assembled into a spherical case. Configuration. Since the method of thermally fusion of the upper and lower hemisphere cases is heated by friction heat generated by rotating the two hemispherical cases against each other or by using a heat fusion method of pressing and heating the fusion portions of the upper and lower hemisphere cases with a heat transfer plate. Since the joint is wide and firmly fused, it is possible to solve the problem of disassembling the conventional biofilm carrier combining the assembly pin and the receiving port.

However, the heat fusion method is heated by frictional heat generated by fastening the joints of the two hemispherical cases against each other and rotating at high speed in the opposite direction, or directly heating the joints of the hemispherical cases with a heat transfer plate, and heating the heated portions of the two hemispherical cases with each other. Since it is assembled by compressing with a compactor, a heating device such as a rotary heating device or a heating device and a compactor are required, and energy and manpower requirements for rotation and heating are large.

The fluidized bed biofilm carrier according to the patent No. 274539 is provided with a plurality of tubular pores, the biofilm is attached to the inner surface of the tubular pores, the reaction liquid passing through the tubular pores in an aerobic reactor is under anoxic conditions or anaerobic conditions The phases can be switched and organic decomposition and denitrification and phosphorus-release reactions are carried out inside the carrier, thus eliminating anoxic to anaerobic reaction tanks and removing nitrogen and phosphorus in an aerobic single reaction tank. In addition, in order to secure the fluidity of the carrier, a film formed of a ceramic material having a relatively high specific gravity is formed on the inner and outer surfaces of the carrier formed of a synthetic resin having a low specific gravity, or a material having a high specific gravity such as stone, ceramic, or metal is inserted or bound; Alternatively, the specific gravity of the carrier was adjusted by injection molding by mixing ceramic powder having a large specific gravity in the synthetic resin.

However, forming a ceramic film with a thickness suitable for controlling specific gravity on the surface of a synthetic resin material requires a complicated process and a high cost, and the ceramic film may be detached and deposited in a reaction tank. Specific gravity control objects such as ceramic and metal pieces inserted or bound require additional materials and insertion processes, but do not function as carriers for microorganisms to attach and grow in addition to the specific gravity control function. In addition, the injection molding after melting by mixing ceramic powder with synthetic resin decreases the fluidity of the melted mixture, so that the injection molding is not smooth, the tensile strength of the finished carrier is decreased, and the pancreaticity is increased. Physical properties as inadequate.

The fibrous or sponge-like microbial contact material in the fluidized biofilm carrier according to the Patent No. 453233 foams by adhering ceramics on the surface thereof or by mixing ceramics and synthetic resins. The tensile strength was lowered and the pancreas increased.

In addition, either one of the fibrous or sponge-like microbial contact material and the mesh-like synthetic resin case was composed of a material having a relatively high specific gravity and the other was composed of a material having a relatively low specific gravity to adjust the weighted average specific gravity. The fluidized bed biofilm carrier should be the first to secure the fluidity in the reactor and the adhesion growth function of the biofilm.

However, in the conventional fluidized bed biofilm carrier, the fluidity can be ensured by filling the microbial contact material having a completely different shape from the case and combining specific gravity differences, so that fluidity can be ensured, while the volume ratio of the case and the microbial contact material is increased. Due to the specific gravity control, it is difficult to optimize the biological conditions as a biofilm carrier in consideration of the growth of microorganisms, such as securing specific surface area and voids, and transfer of substrate into the microorganism contact material.

For example, in order to adjust the weighted average specific gravity to 1.0 that is most suitable for flow by filling a sponge-like microbial contact material of PVDC material with a specific gravity of 1.1 with a specific gravity of 0.9 PE material, the case and the sponge-like microbial contacting material are The same volume should be combined based on the material. Sponge-like microbial contact materials, which are inflated with many voids inside, have a very small specific gravity. Therefore, when foaming a weight or volume of material such as a case, the volume of the foamed sponge is greatly increased. The microbial contact must be filled inside the case.

However, when the sponge-like microbial contact material with a large unit volume is filled, microorganisms may adhere to and propagate in the pores from the surface to a certain thickness, but the substrates may not be properly transferred to the internal pores and microorganisms may not proliferate, thereby not functioning as a carrier. There is a dead part, the same problem occurs in the case of fibrous microbial contact material.

Accordingly, the present invention is designed to solve the above-mentioned problems, it is easy to control the specific gravity, increased durability, and equipped with optimum conditions for the growth of microorganisms and flow in the reaction vessel, while the fluidized bed biofilm carrier assembled easily and economically To provide.

In order to achieve the above object, in the present invention, a microbial contact material having a large specific surface area and a large porosity is filled in a space formed in a container having a large specific surface area and a plurality of tubular pores or through holes formed in a network shape. In addition, an outer carrier having a large specific surface area and a plurality of tubular pores or through holes formed therein is assembled on the side of the space filled with the microbial contact material, wherein the outer carrier is provided with an assembly tool and an assembly rod, By inserting the assembly rod assembly, a fluidized bed biofilm carrier having a structure in which the microbial contact material does not leak to the outside was provided.

Here, any one or more of the three or more components consisting of two or more of the outer carrier and one or more kinds of microbial contact materials are synthetic resin materials such as polyurethane, PVC, PVDC, ABS, HDPP, HDPE, etc. having a relatively high specific gravity or 3 to form at least any one or more of the ceramic material, and the other one or more components are formed from at least one or more of materials such as PE, PP, Nylon, etc. having a relatively low specific gravity, thereby constituting the fluidized bed biofilm carrier By adjusting the specific gravity and volume of more than two components, the weighted average specific gravity of the assembled fluidized bed biofilm carrier was adjusted to allow smooth flow in the reactor.

Conventional method that is difficult to secure optimum condition in terms of microbial growth function by focusing on securing weighted average specific gravity suitable for flow by combining two elements of completely different shape such as sponge or loofah type microbial contact material and mesh contact material case In order to solve the problem of the present invention, the specific gravity and volume of the outer carrier and the microbial contact material are different from each other, and as a third means, the shape or specific gravity of the two or more outer carriers are assembled differently. The weighted average specific gravity of the completed fluidized bed biofilm carrier can be more precisely controlled.

That is, the size of the outer carrier, the amount of filling and porosity of the microbial contact material filled therein, the optimum conditions are first secured in terms of biological functions such as substrate transfer, microbial adhesion growth, phase inversion and maintenance, and fluidity is first. By adjusting the specific gravity and volume of the second outer carrier bound to the outer carrier, the total weighted average specific gravity of the finally assembled fluidized bed biofilm carrier is finely adjusted to the specific gravity which is most suitable for the flow, thereby optimizing fluidity and biological function simultaneously. Fluidized bed biofilm carriers can be realized.

The microbial contact material according to the present invention is mixed with a specific surface area and a biocompatible granular material and a synthetic resin material to form a large specific surface area, physics such as scratching the surface of the synthetic resin molding with a brush or chemical Through chemical surface treatment, the granular material was exposed to the surface of the synthetic resin molding to further increase specific surface area and biocompatibility.

The space part can be used as a microbial contact material by filling a plurality of small unit modules formed of a material such as synthetic resin, ceramic, and having a large specific surface area and porosity. It can be molded.

The plurality of small modules may be individually charged to allow the modules to flow in the space. In addition, the microbial contact material may be formed by adhering a plurality of modules to a non-toxic adhesive material or by putting a plurality of modules in a mesh so that the modules can be combined to form a certain type of microbial contact material.

In addition, the surface of any one or more components of the outer carrier or the microbial contact material by applying a non-toxic adhesive, or by adhering the granular material having a large specific surface area and biocompatibility, microbial contact further increased the specific surface area and biocompatibility Ash can be realized.

The microbial contact material to be filled in the space may be filled with a microbial contact material of a ceramic or activated carbon material formed in porous so that the specific surface area and porosity is relatively increased.

In addition, a sponge-like microbial contact material foamed so that a large specific surface area and porous pores communicate with each other, or a woven fabric, a nonwoven fabric, a cilia, and a loofah (Lock), which are woven or overlapped in a shape having a large specific surface area and a large porosity. Various types of fibrous microbial contact materials may be filled, and the sponge-like and fibrous microbial contact materials may be filled by rolling a plate shape into a cylindrical shape or a plurality of small pieces.

The fluidized bed biofilm carrier according to the present invention forms an assembling rod and an assembling rod in the outer carrier, and inserts the assembling rod into the assembling unit to bond two or more outer carriers to each other, but is firmly assembled without being separated from each other. Forming a jaw for preventing separation in the assembly rod to be formed, or to form a long so that the assembly rod is protruded to the outside in the state inserted into the assembly sphere, the assembly rod is inserted into the assembly rod protruding to the other side of the assembly sphere The end of the assembly rod is assembled by heating and compressing the protrusion to enlarge the larger than the inner diameter of the assembly.

In addition, the first outer carrier having an assembly tool is in a state of thermal expansion at a high temperature, the second outer carrier having an assembly rod is inserted into the assembly rod in the assembly sphere in a state of cooling contraction to room temperature, The outer carrier on the side where the assembly rod is provided with the assembly rod is also cooled or left in the air to be cooled to room temperature to realize a fluidized biofilm carrier in which the assembly sphere is shrunk and closely assembled with the assembly rod.

The assembly rod and the assembly sphere is formed in the interior of the tubular cavity, and the protective jaw is formed on the outer side of the first to second outer carrier for the assembly rod and the assembly sphere to protect the coupling portion of the assembly rod and the assembly sphere in the flow process The disengagement of the joint was prevented by collision and abrasion.

In addition, in order to solve the problem that the contact rate of the reaction solution and the biofilm is not high when the carrier is formed in a simple linear or curved trajectory and flows in the reaction tank, in the present invention, the carrier flows while shaking and shaking in the process of flowing. In order to flow in a spiral manner, the center of gravity of the fluidized bed biofilm carrier and the buoyancy center acting on the carrier in the state of being deposited in the reaction liquid are separated from each other, or an eccentricity is generated, or agitated in the reaction tank to the carrier. In order to increase the contact efficiency between the carrier and the substrate as the rotational force is generated and rotates in the reaction liquid during the flow, the contact efficiency is improved by providing a wing blade in the form of a flat plate, screw, and rotor blade.

In addition, the tubular pores or through-holes may be inclined to be inclined so that a rotational force may be generated when the reaction solution passes through the tubular pores.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a first embodiment of the fluidized bed biofilm carrier according to the present invention, and FIG. 2 is a perspective view of the first embodiment of the fluidized bed biofilm carrier according to the present invention.

As shown in Figures 1 and 2, the fluidized bed biofilm carrier according to the present invention each has a hemispherical shape and is combined with each other to form a spherical first outer carrier 1 and the second outer carrier (2) and And a microbial contact material 3 filled in the space formed by combining the first outer carrier 1 and the second outer carrier 2.

Each of the first outer carrier 1 and the second outer carrier 2 forms a space portion 5 therein, and a plurality of through-holes have a specific surface area on the sidewalls so that water flow and air bubbles can be easily distributed. The sphere 6 and the tubular void 4 are formed. The space part formed by combining the first outer support 1 and the second outer support 2 is filled with a microbial contact material 3 having a large specific surface area and a large porosity.

The first outer carrier 1 is provided with a plurality of assembly holes 7 and the assembly rods 8 alternately at regular intervals along the circumferential direction on the engaging surface with the second outer carrier (2). .

The assembling tool (not shown) and the assembling rod 8 of the first outer carrier 1 are respectively assembled with the assembly rod 8 and the assembling tool provided on the mating surface of the corresponding second outer carrier 2. 7) the first outer carrier 1 and the second outer carrier 2 are bonded to each other by being inserted into and coupled to each other.

The assembly rod 8 and the assembly sphere 7 are formed on the bottom side of the inside of the tubular cavity 4, and the first coupling portions of the assembly rod 8 and the assembly spheres 7 are located. Protective jaws 9 and 9a are formed on the outer side surfaces of the outer carrier 1 and the second outer carrier 2 to protect the joint from being disassembled from impact and abrasion due to flow.

At least one of the first outer carrier 1 and the second outer carrier 2 or the microbial contact material 3 is formed of at least one material of a synthetic resin material or ceramic material having a relatively high specific gravity. And, the other one or more can be precisely adjusted to suit the flow weighted average specific gravity of the biofilm carrier is completed by forming a relatively small specific gravity resin material.

The assembly rod 8 is formed long so as to protrude to the outside in the state of being inserted into the corresponding assembly opening (7), and the outer diameter of the assembly rod 8 is heated by pressing the protrusion of the assembly rod (8) The first outer carrier 1 and the second outer carrier 2 may be firmly assembled without being separated by being enlarged larger than the inner diameter of the assembly opening 7. As such, since only the assembly rod 8 is heat-compressed, power costs and efforts can be reduced.

In addition, the first outer supporter (1) and the second outer supporter (2), respectively, the assembling holes (7) and the assembling rod (8) are molded, but the separation bar (8a) in the separation prevention jaw (8a) Further molding, it can be firmly assembled by inserting and fastening the assembling rod (8) provided with the separation prevention jaw in the assembly opening (7).

In addition, the outer carrier provided with the assembly tool 7 is in a state of thermal expansion at high temperatures, the outer carrier provided with the assembly rod 8 is in the state of cooling assembly shrinkage to room temperature to the assembly 7 When the assembly rod 8 is inserted and the assembled outer carrier is cooled or left in the air to be cooled to room temperature, the assembly opening 7 is reduced by cooling contraction and is firmly attached to the assembly rod 8. It can be economical without the extra energy and effort for heating and compression.

The microbial contact material (3) is a physical and chemical surface of the synthetic resin molding formed into a shape having a large specific surface area by mixing a specific surface area of activated materials such as activated carbon, zeolite, ceramic, stone powder, and granular material having high biocompatibility and synthetic resin material. When the granular material is exposed to the surface by roughening the surface, the surface becomes rough due to the protrusion of the granular material, so that the specific surface area is increased, and the granular material having a high biocompatibility is exposed to the surface where the microorganisms adhere and proliferate to further increase the biocompatibility. Can be.

In addition, the surface of any one or more of the outer carrier (1, 2) or the microorganism contact material (3) is coated with a non-toxic adhesive such as latex bond, such as a natural material, or a specific surface area such as activated carbon, zeolite, ceramic, stone powder, etc. It is possible to increase the specific surface area and biocompatibility by adhering the granular material with high biocompatibility with a non-toxic adhesive and can be used as an auxiliary means for specific gravity control.

The fluidized bed biofilm carrier is provided with one or more wing feathers 10 or two microbial contact materials having different specific gravity or different specific gravity of the first outer carrier 1 and the second outer carrier 2. While filling the asymmetrical structure, the center of gravity of the assembled fluidized bed biofilm carrier and the center of buoyancy acting in the state of being deposited in the reaction liquid are separated from each other. Contact was increased.

3 is a cross-sectional view of a first embodiment of a fluidized bed biofilm carrier according to the present invention.

One side is blocked by the tubular air gap 4 and the assembly hole 7 and the assembly rod 8 having various types of through holes 6 and open sides, so that the specific surface area is increased and the flow of water and bubbles can be easily flowed. The microbial contact material having a large specific surface area and porosity is formed in the space portion formed by combining the first outer carrier 1 and the second outer carrier 2, which are in the form of a reticulated container having a plurality of voids 4a. ) And the protective jaws 9 and 9a are formed on the outer side surfaces of the first to second outer carriers 2 on which the assembly rods 8 and the assembly holes 7 are located.

In this embodiment, the assembly rod (8) is formed long so that it can protrude to the outside in the state inserted into the assembly opening (7), and after the assembly by heating and pressing the protrusion of the assembly rod (8) The outer diameter of 8) is larger than the inner diameter of the assembly 7 so that the assembly rod 8 is not separated from the assembly 7 and the first outer carrier 1 and the second outer carrier 2 ) Shows a configuration that can be firmly assembled.

4 is a cross-sectional view of a second embodiment of a fluidized bed biofilm carrier according to the present invention.

The first outer carrier 1 and the second outer carrier 2 are formed with an assembling hole 7 having an inclined surface 7a at the inlet edge and an assembling rod 8 having a departure preventing jaw 8a. When the assembly rod 8 is inserted into the assembly opening 7, when the separation prevention jaw 8a of the assembly rod 8 is inserted, the assembly rod 8 is smoothly inserted along the assembly opening 7a. (8a) is in contact with the edge of the assembly opening 7 is fastened and shows a configuration that can be prevented disassembly and can be firmly assembled, the remaining configuration is the same as the first embodiment.

5 is a perspective view of a module for contacting microorganisms according to the present invention.

The space portion 5 has a circular spherical shape 11a, a cylindrical shape 11b, a spiral shape 11c, a small module 11a, 11b, and 11c formed of a material such as synthetic resin, ceramic, or the like with a large specific surface area and porosity. It can be used as a microbial contact material by filling a plurality.

The plurality of modules may be adhered with a non-toxic adhesive material to form a microbial contact material having a predetermined shape, or may be used as a microbial contact material by placing a plurality of modules in a network of a predetermined shape, and filling a plurality of spaces in the space.

On the other hand, in the above described the case where the other biofilm carrier is used as the fluidized bed in the present invention, the biofilm carrier according to the present invention is not limited to the fluidized bed, but increases the specific gravity to be deposited in water lakes and rivers It may be used as a fixed bed carrier in a clarification, deposition, or trickling filter.

The biofilm carrier according to the present invention can meet the optimum microbial growth conditions and at the same time finely control the specific gravity to meet the optimum flow conditions, increase the frequency of contact of the reaction solution and the biofilm to improve the reaction efficiency, manufacturing The process is simple, economical, durable and semi-permanent, mainly used for biological wastewater treatment, and can be used as a filler for deodorization towers and scrubber towers. In addition, the biofilm carrier of the present invention can be used as a fixed-phase biofilm carrier in the purification of the contaminated water, the deposition filter, or the water spray filter by increasing the specific gravity to be deposited.

Claims (14)

Each of them has a plurality of through holes 6 or tubular voids 4 and 4a formed on the sidewalls so that the specific surface area is increased and the flow of water and air bubbles can flow smoothly, and they are connected to each other to communicate with the through holes 6 therein. The first outer carrier 1 and the second outer carrier 2 and the first outer carrier 1 and the second outer carrier 2, which form a space part 5, are combined with each other. A microbial contact material 3 having a large specific surface area and a large porosity filled in the space 5 to be formed, At least one of the first outer carrier (1), the second outer carrier (2) and the microbial contact material (3) is formed of a synthetic resin material or a ceramic material having a relatively high specific gravity, the other one or more The weighted average specific gravity of biofilm carriers molded and assembled from synthetic resin materials with relatively low specific gravity is adjustable. The first outer carrier (1) is provided with a plurality of assembly holes (7) on the inner bottom side of the first outer carrier (1), the second outer carrier (2) for the first outer An assembly rod 8 inserted into the assembly opening 7 of the carrier 1 is provided on the inner bottom side of the second outer carrier 2 so that the assembly rod 8 is inserted into the assembly opening 7. To be fixed together, to be joined together, The protective jaws 9 and 9a which protect the respective coupling parts of the assembly tool 7 and the assembly rod 8 from external shocks are provided at the respective coupling parts of the assembly rod 8 and the assembly holes 7. Fluidized biofilm carrier, characterized in that formed on the outer side of the first outer carrier (1) and the second outer carrier (2) located. delete The assembly rod (8) of claim 1, wherein the assembly rod (8) penetrates the assembly opening (7) and protrudes outwardly from the assembly opening (7) so that the tip is fixed to the assembly opening (7) by hot pressing. Fluidized bed biofilm carrier, characterized in that. According to claim 1, wherein the assembly rod (8) is provided with a departure prevention jaw (8a) at the tip so that the front end is fixed to the assembly opening (7), the assembly opening (7) of the assembly rod (8) Fluidized biofilm carrier, characterized in that the inclined surface (7a) is provided at the inlet so that the departure prevention jaw (8a) is inserted smoothly. According to claim 1, wherein the outer carrier (1) having the assembly opening (7) is thermally expanded at a high temperature, the outer carrier (2) provided with the assembly rod (8) is assembled in the cold shrinkage state Inserting the assembly rod 8 into the sphere (7) by cooling the shrinkage of the outer carrier (2) equipped with the assembly sphere (7) characterized in that the assembly sphere (7) tightly fixed to the assembly rod (8) Fluidized bed biofilm carrier. The method of claim 1, wherein the microbial contact material 3 is formed by mixing a specific surface area, a granular material having a high biocompatibility, and a synthetic resin material into a shape having a large specific surface area, and physically and chemically treating the surface of the synthetic resin molded product. The particulate matter film is exposed to the surface of the synthetic resin molded body, characterized in that the specific surface area and biocompatibility is further increased. The fluidized bed biofilm carrier according to claim 1, wherein the microbial contact material (3) comprises at least one of ceramics or activated carbon which are formed to be porous so that the specific surface area and porosity are relatively increased. The fluidized bed biofilm carrier according to claim 1, wherein the microbial contact material (3) is a foamed foam so that a plurality of pores communicate with each other so that the specific surface area and the porosity are relatively increased. The fluidized bed biofilm carrier according to claim 1, wherein the microbial contact material (3) is a fibrous structure formed by weaving or superposing fibers in a shape having a relatively large specific surface area and having a large porosity. 2. The fluidized bed biofilm carrier according to claim 1, wherein the microbial contact material (3) has a plurality of modules (11a, 11b, 11c) having a large specific surface area and a large porosity. The method of claim 1, wherein at least one of the outer carrier (1, 2) or the microbial contact material (3) is non-toxic adhesive is applied to the surface or the specific surface area and biocompatible material is adhered to the non-adhesive Fluidized bed biofilm carrier, characterized in that the surface area and biocompatibility are further increased. The fluidized bed biofilm carrier according to claim 1, wherein the outer carrier (1,2) is provided with at least one wing feather on the outer wall to generate rotational force while flowing in a state of being deposited in the reaction solution. The fluidized bed according to claim 1, wherein the outer carrier (1, 2) is characterized in that the specific gravity is controlled so that an eccentricity is generated by being separated from each other by the center of gravity and the center of buoyancy acting in the state of being deposited in the reaction solution. Biofilm carrier. The method of claim 10, wherein the microbial contact material 3 is characterized in that the plurality of modules (11a, 11b, 11c) is filled in the network, or the plurality of modules (11a, 11b, 11c) are bonded. Fluidized bed biofilm carrier.

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