KR100636706B1 - The Fluidized BioFilm Medias and Assembling Method thereof with Thermal Expansion and Cooling Contraction - Google Patents

Abstract

The present invention relates to a fluidized bed biofilm carrier filled in a microbial culture tank and a method for manufacturing the same. Particularly, the present invention relates to a specific surface area of an insertion portion provided in an outer carrier having a plurality of through holes or tubular pores through which a reaction solution can pass. Filling the microbial contact material having a large porosity, and inserting the interpolation carrier formed with a plurality of through-holes or tubular pores into the inlet of the insert filled with the microbial contact material to combine so as not to be separated to assemble the fluidized biofilm carrier, the outer At least one or more of the carrier and the intercalation carrier or microbial contact material is composed of a material having a relatively high specific gravity, and the remaining components are composed of a material having a relatively low specific gravity to adjust the specific gravity. The outer carrier is injection molded into a synthetic resin material melted at a high temperature, or the ceramic material is sintered at a high temperature to charge a microbial contact material in the insert in a thermal expansion state before cooling, and at room temperature at the inlet of the insert filled with the contact material. Provides a method for assembling a fluidized biofilm carrier in which an outer carrier is cooled and contracted to room temperature by inserting an interpolated carrier that is cooled and completed to shrink, thereby being tightly coupled to the intercalating carrier and preventing leakage of microbial contact materials. .

Fluidized bed, biofilm carrier, microbial contact material, cooling contraction

Description

The Fluidized BioFilm Medias and Assembling Method Equipped with Thermal Expansion and Cooling Contraction

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

2 is a perspective view of the fluidized bed biofilm carrier according to the first embodiment of the present invention;

3 is a flowchart of a method of assembling a fluidized bed biofilm carrier according to a first embodiment of the present invention;

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

5 is a partially cutaway perspective view of a biofilm carrier according to a second embodiment of the present invention;

6 is a flowchart of a method of assembling a biofilm carrier according to a second embodiment of the present invention;

7 is a perspective view of a spherical fluidized bed biofilm carrier according to the present invention;

8 is a schematic view of a fluidized bed biofilm carrier equipped with a blade according to the present invention.

※ Explanation of code for main part of drawing

1,1a: outer carrier 2,2a: interpolation carrier

3: microorganism contact material 4, 4a: coronal cavity

5 insertion part 6 through hole

7, 7a, 7b: wings

The present invention relates to a fluidized bed biofilm carrier and an assembly method for filling a microbial culture tank, and sequentially filling and inserting the microbial contact material and the interpolation carrier of fibrous, ceramic or activated carbon material into the outer carrier. The present invention relates to a fluidized bed biofilm carrier and a method for assembling the carrier and the interpolation carrier firmly bonded by thermal expansion and cooling contraction.

Biomembrane carriers are used in the multiplication process to decompose organic contaminants in sewage water by attaching and multiplying microorganisms. Compared to the single propagation process by flotation, sludge generation and site requirements are small, and they can respond flexibly to load fluctuations. It has many advantages such as stable treatment water quality and 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 aeration tank, and it is easy to add or remove as needed, the amount of filling 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 floating on the water surface, and synthetic resin and ceramic materials such as PVC, PVDC, ABS, and urethane have a high specific gravity. Because of poor fluidity due to deposition, 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 the microbial contact member filled in the inner space of the spherical case assembled with two hemispherical cases by fastening the assembly pin and the receiving opening. The microorganism is attached to the case and propagated, the specific gravity control object is inserted so that the flow smoothly.

However, since the fluidized bed biofilm carrier is assembled by fastening the assembling pin and the receiving port formed in the hemispherical case, a collision with the wall surface of the reactor occurs while the assembly pin is separated and disassembled from the receiving port.

Patent No. 350049 is for solving the problem of disassembly of the binding site of the fluidized bed biofilm carrier according to Patent No. 108262. The two hemispherical cases of the upper and lower parts of the synthetic resin material are heat-sealed against each other to be firmly assembled into a spherical case. It is a constitution. 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, the conventional biofilm carrier combining the assembly pin and the receiving port can be dismantled or solve the problem.

However, the heat fusion method is heated by frictional heat generated by fastening the coupling portions of the two hemispherical cases against each other and high speed in the opposite direction, or directly heating the coupling portions of the upper and lower hemispherical cases with a heat transfer plate, and crimping the heated parts with a press. Since the assembly is made by a heating device such as a rotary heating device or a heating device and a compression machine, there is a big problem of energy and manpower requirements for rotation and heating.

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 controlled by injection molding by mixing ceramic powder with 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 ceramics and metal pieces inserted and bound require additional materials and processes, but have little function as a carrier for microorganisms to attach and grow in addition to the specific gravity control function. In addition, injection molding after melting the ceramic powder by mixing the synthetic resin has a problem that the injection of the melted mixture is not smooth, injection molding is not smooth, the tensile strength of the finished carrier is reduced and the pancreaticity is increased.

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. However, the fluidized bed biofilm carrier should be the first to secure the fluidity in the reactor. Therefore, in the conventional fluidized bed carrier, it is necessary to fill the microbial contact material that is completely different from the case and to combine the specific gravity difference to meet the optimum flow conditions. Therefore, as the volume composition ratio of the case and the microbial contact material is focused on specific gravity control, It was difficult to optimize the biological conditions as a biofilm carrier in consideration of the growth of microorganisms such as securing pores and transferring substrates into the microbial 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. The sponge-like microbial contact material, which is inflated with many voids inside, has a very small specific gravity, so the volume of the foamed sponge is greatly increased even when foamed with a weight or volume such as a case. A large sponge-like 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 substrate may not be properly transferred to the internal pores and microorganisms may not proliferate, thereby not functioning properly as a carrier. The failure occurs, and the same problem occurs in the case of fibrous microbial contact materials.

Accordingly, the present invention is designed to solve the above-mentioned problems, the specific gravity control is easy, durability is increased, while the optimum conditions for the growth of microorganisms, while the assembly method is simple and economical fluidized bed biofilm carrier and its assembly To provide a way.

In order to achieve the above object, the fluidized bed biofilm carrier according to the present invention has a large specific surface area and a large specific surface area of the outer carrier and the insertion part provided in the plurality of various types of tubular pores or through holes. Insert a carrier for inserting a plurality of through-holes to be firmly bonded so as not to be separated from each other to form a fluidized biofilm carrier, any one of the outer carrier or the carrier for interpolation has a relatively high specific gravity polyurethane, PVC , Molded of synthetic resin material such as PVDC, ABS, HDPP, HDPE, or any one of ceramics, and the other is formed of any one material of synthetic resin materials, such as PE, PP, Nylon, etc. By adjusting the specific gravity and composition ratio of other materials, the weighted average specific gravity of the assembled biofilm carrier is Adjusted to flow smoothly.

In particular, since the shape of the outer carrier and the interpolation carrier are similar to each other, the weighted average specific gravity that is favorable for flow can be easily adjusted, and the specific surface area and the size of the pores, the volume and the size of the carrier, etc. to the inside pores of the biofilm carrier Carriers with optimum conditions can be realized in terms of biological functions such as substrate transfer, microbial growth, phase change, and maintenance.

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 while rotating in a spiral, 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 solution were separated from each other to cause an eccentricity. In addition, the contact efficiency is improved by providing a blade, a flat plate, a screw, a rotor blade shape so that the rotational force is generated and the contact efficiency is increased by the stirring water flow in the reaction tank.

In addition, the present invention is a method for assembling a fluidized bed biofilm carrier using thermal expansion and cooling shrinkage, before the outer carrier of the synthetic resin material injection molded at a high temperature or the ceramic material sintered at a high temperature after molding is cooled to room temperature to complete the shrinkage The intercalation carrier is formed in the outer carrier in the thermally expanded state and the insertion portion is inserted into the insertion portion in which the inlet and the inner space are widely expanded. The interpolation carrier is left to cool for a certain time after injection or sintering and cooled to room temperature. And the one in which the contraction is completed. When the outer carrier in a state of thermal expansion at high temperature is cooled and contracted to room temperature, the insertion part is also reduced accordingly, so that the interpolation carrier and the outer carrier inserted into the insertion part may be tightly coupled to each other. Thus, by utilizing the heat energy applied for the molding of the outer carrier in the assembly of the carrier, the energy for heating the fusion site is omitted, manpower is reduced, it is economical because the welding equipment is unnecessary.

In the present invention, the microbial contact member having a large specific surface area and a large porosity is filled with an insertion portion formed in a tubular cavity having a large specific surface area or a plurality of through holes or an outer carrier having a plurality of through holes, and the microorganism contact member is filled. The inlet of the insertion part also has a large specific surface area and inserts an interpolation carrier having a plurality of through holes and firmly couples the outer carrier and the interpolation carrier to each other so that the microbial contact material does not leak to the outside. Devised.

Here, any one or more of the outer carrier, the interpolation carrier or the microbial contact material may be made of at least one of a synthetic resin material or ceramic material such as polyurethane, PVC, PVDC, ABS, HDPP, HDPE, etc. having a relatively high specific gravity. Molding, and the other one or more is molded by at least one of materials such as PE, PP, and nylon having a relatively low specific gravity, and then assembled by adjusting the specific gravity and volume of the three components constituting the fluidized bed biofilm carrier. The weighted average specific gravity of the completed fluidized bed biofilm carrier was adjusted to allow smooth flow in the reactor.

Here, the microbial contact material filled in the insert portion is a ceramic or activated carbon material formed in a porous form to increase the specific surface area and porosity relatively, or a sponge-shaped microbial contact material foamed so that the specific surface area and the porous pores communicate with each other, Or at least one of various shapes of fibrous microbial contact materials such as woven fabric, nonwoven fabric, cilia raised melt, or loofah by weaving or superimposing the specific surface area and the porosity into a large shape.

Consists of sponge or scrubber-shaped microbial contact material and mesh contact material case made of synthetic resin to increase specific surface area and porosity. In order to solve the problems of the conventional type fluidized bed biofilm carrier, which is difficult to secure optimum conditions in terms of biological function related to microbial growth, in the present invention, the outer carrier as a third element in addition to the outer carrier and the microbial contact material The fluidity is complemented by the combination of interpolation carriers having the same shape and different specific gravity.

That is, the size and shape of the outer carrier, and the amount 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 change and maintenance, Fluidity is optimized by simultaneously adjusting the specific gravity and volume of the intercalation carrier inserted into the insertion hole of the outer carrier to precisely control the overall weighted average specific gravity of the fluidized bed biofilm carrier to the specific gravity suitable for the flow. Fluidized bed biofilm carrier was realized.

A method of assembling a fluidized bed biofilm carrier filled with a microbial contact material, wherein the synthetic resin material is melted at a high temperature and injected into the outer carrier which is thermally expanded at a high temperature before being cooled to room temperature. When the microbial contact material is filled in the inner space of the insert, and left to cool for a predetermined time in the air or cooled to room temperature, the outer carrier and the inlet and the inner space of the insert are subjected to cooling contraction, while cooling contraction is no longer performed. The outer carrier is in close contact with the insert carrier in a room temperature state, which is not made, and a solid bond is made, and the microbial contact material filled in the inner space of the insert is not leaked to the outside, but the fluidized biofilm carrier trapped in the inner space can be assembled. Can be. In addition, the outer support is assembled in the same manner in the case of a ceramic material sintered at a high temperature after molding.

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

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

As shown in Figure 1a, the outer carrier 1 according to the first embodiment of the present invention is formed with a plurality of through-holes or tubular voids (4) of various forms and the insertion portion 5 in the central portion or one side thereof Is provided, the tubular pores (4) can be formed into a cross section, such as a circle, a polygon. In addition, the outer carrier may be formed in a cylindrical shape, a spherical shape, an oval shape, and a through hole (not shown) communicating with the tubular cavity 4 may be formed on the side surface.

A plurality of tubular pores 4a or through holes are formed in the carrier 2 for interpolation, and the tubular pores 2 or through holes may be formed in various shapes such as a circle or a polygon. The insertion carrier 2 in Fig. 1 is formed by removing the outer skin of the side surface and forming the inner space of the tubular cavity 4a so that the tubular cavity of the outer portion is exposed to the inside. Is inserted into the inner space of the insertion portion 5 provided in the outer carrier 1, the inner side of the insertion portion is in close contact with the open portions of the open tubular pores (4a) to form independent tubular pores respectively. Done. The interpolation carrier without the outer covering according to this embodiment is easy to insert and prevents the overlap of the coating of the interpolation carrier and the outer carrier, thus eliminating waste of material and economical.

Figure 2 is a perspective view showing a bonded perspective view of the first embodiment of the fluidized bed biofilm carrier assembled according to the present invention, inserting the interpolation carrier (2) in the insertion portion 5 provided in the outer carrier (1) and each other It is assembled into a fluidized bed biofilm carrier having a plurality of tubular pores (4, 4a) by combining so as not to separate.

Here, any one of the outer carrier (1) or the interpolation carrier (2) is made of any one of a synthetic resin material or ceramic material such as polyurethane, PVC, PVDC, ABS, HDPP, HDPE, etc. Molding, and the other is made of any one of materials such as PE, PP, Nylon, etc. whose specific gravity is relatively small, so that the total weighted average specific gravity flows smoothly in the reactor by adjusting specific gravity and volume ratio of different materials. It is.

Ceramic materials having a relatively high specific gravity are generally used for forming the interpolation carrier 2 that is protected inside the outer carrier 1 because the tensile strength is low and the pancreatic property is large. It is preferable to use materials such as PE and PP which are excellent and light. In addition, recycled synthetic resins having poor physical properties such as abrasion resistance and strength are also used for forming the interpolation carrier (2), and the outer carrier (1) can recycle waste resources by using materials having excellent physical properties. Phase biofilm carriers can be realized.

The insert portion 5 of the first embodiment was molded in the center portion of the outer carrier 1, but the insert portion was molded so as to be biased on one side of the outer carrier, and by inserting an interpolation carrier having different specific gravity, It is possible to realize a fluidized bed biofilm carrier in which buoyancy centers are spaced apart from each other.

Figure 3 is a flow chart of the fluid bed biofilm carrier assembly method of the first embodiment according to the present invention, the carrier for interpolation is a ceramic material and the outer carrier is an embodiment of assembling a synthetic resin material.

After inserting the outer support carrier melted at a high temperature into a synthetic resin material before being cooled to room temperature, the insert is inserted into the outer support expanded in a thermal expansion state, and then sintered after molding a ceramic material to form a sintered carrier which is cooled and cooled to room temperature. Inserting and cooling the outer carrier in a state of thermal expansion at a high temperature to room temperature, the inlet and the inner space of the insert also shrinks, so that the outer surface of the insert carrier is already cooled to room temperature and no further cooling contraction is achieved. The inner surface of the insert is in close contact with each other to show a process of firmly coupled. In addition, the interpolation carrier may be assembled in the same manner as the synthetic resin material melted at a high temperature after injection molding or the ceramic material sintered at a high temperature after molding.

The interpolation carrier can be easily inserted into the insertion portion expanded in the state in which the extrapolation carrier is thermally expanded at a high temperature, and the extrapolation carrier and the insertion portion are in close contact with each other at an appropriate pressure when cooled and contracted to room temperature, and are broken or separated from each other. The outer diameter of the interpolation carrier and the inner diameter of the insert should be determined so as not to.

The assembly method of the fluidized bed biofilm carrier according to this embodiment is composed of the following steps.

The first step (S21) is a step of forming an interpolation carrier for molding an interpolation carrier having a plurality of tubular pores or through holes by injection molding a synthetic resin material by sintering or melting a ceramic material.

The second step (S22) is a cooling contraction step of the interpolation carrier for cooling to room temperature at room temperature by cooling or leaving the interpolation carrier in the air for a predetermined time so that the interpolation carrier of the high temperature state formed in the molding step is contracted to be.

The third step (S23) is a molding step of the outer carrier for molding the outer carrier having a plurality of tubular pores and inserts by injection molding the ceramic material or injection molding the molten synthetic resin material.

The fourth step (S24) is an insertion step of the interpolation carrier for inserting the interpolation carrier, the cooling contraction is completed in the inner space of the insertion portion of the outer carrier is expanded and expanded at high temperature after molding.

In the fifth step (S25), the outer carrier having the intercalated carrier inserted therein into the insert portion is left to stand in the air for a predetermined time or forcedly cooled to condense to room temperature. Joining step by the cooling contraction to be in close contact with each other.

4 is an exploded perspective view of a biofilm carrier according to a second embodiment of the present invention.

The outer carrier 1a of this embodiment is provided with a net body having a plurality of through-holes 6 formed at the bottom of the inserting portion 5a, and the inserting portion 5a is in the form of a container capable of accommodating microbial contact materials. The outer carrier can be molded to have a through-type insert having both sides open as in the first embodiment.

 The interpolation carrier 2a of this embodiment is in the form of a mesh with a plurality of through holes 6a and is inserted into the inlet side of the insertion portion 5a when the insertion portion is a container shape, and both sides of the insertion portion in the through insertion portion. The insertion of the microorganism contact material 3 filled in the inner space of the insertion portion can be prevented by inserting the respective inlets.

In addition, the interpolation carrier (2a) may be formed in the form of a screw or a rotor blade to generate a rotational force on the carrier.

FIG. 5 is a partially cutaway perspective view of the fluidized bed biofilm carrier according to the second embodiment of the present invention, which is inferior to the internal space of the inserting portion 5a provided in the outer carrier 1a of FIG. The microbial contact material 3 having a large surface area and a large porosity is filled, and an interpolation carrier 2a having a plurality of through holes is inserted into the inlet of the insertion hole 5a, and the outer carrier 1a and interpolation are inserted. An embodiment of a fluidized biofilm carrier in which the microbial contact material 3 does not leak to the outside by bonding the carrier 2a.

Wherein at least one of the outer carrier (1a), the intercalation carrier (2a) and the microbial contact material (3) is a synthetic resin material such as polyurethane, PVC, PVDC, ABS, HDPP, HDPE, etc. By molding at least one or more of the ceramic material and the other one or more by molding at least one or more of synthetic resin materials such as PE, PP, Nylon, etc., the specific gravity and volume composition ratio of different materials By adjusting the weighted average specific gravity of the fluidized bed biofilm carrier can be adjusted to smoothly flow in the reactor.

The microbial contact material (3) is a microbial contact material of a ceramic or activated carbon material formed to be porous so that the specific surface area and porosity is relatively increased, and a sponge-like microbial contact material that is porous and foamed so that the pores communicate with each other, or the specific surface area. By woven or superimposed in a large porosity shape, it is possible to use a fibrous microbial contact material composed of various forms.

The outer carriers 1 and 1a of the first embodiment and the second embodiment exemplify an embodiment in which two layers of tubular pores are provided, but the outer carrier according to the present invention is not limited to the tubular pores. It can be carried out in the form of a single layer of a through hole formed.

In addition, the insertion part is formed to be biased on one side of the outer carrier, and the center of gravity and buoyancy center of the fluidized biofilm carrier, which are assembled, are separated from each other by filling the microbial contact material having different specific gravity and the intercalation carrier therein, so that the center of gravity is separated from each other. Can be generated.

6 is a flowchart of a fluid bed biofilm carrier assembly method according to a second embodiment of the present invention.

The procedure other than the process of filling the insert with the microbial contact material is the same as that of the flowchart of FIG. In addition, when the outer carrier is molded so that both sides penetrate into the open portion, the insert carriers should be inserted into the inlets of the inserts filled with the microbial contact material, respectively. The assembling method of the fluidized bed biofilm carrier according to this embodiment is configured to include each of the following steps.

The first step (S41) is a step of forming an interpolation carrier for sintering a ceramic material or injection molding a molten synthetic resin material to mold an interpolation carrier having a plurality of tubular pores or through holes.

The second step (S42) is a cooling contraction step of the interpolation carrier which is cooled to room temperature at high temperature and contracted by allowing the interpolation carrier formed in the first step to stand in the air for a predetermined time or cooling. .

In the third step (S43), a plurality of tubular pores are formed by molding a ceramic material and sintering or by injection molding a molten synthetic resin material, and both sides are penetrated or a mesh is formed on one side to include an insert portion having a container shape. It is a molding step of the outer carrier for molding the outer carrier.

The fourth step (S44) is a microbial contact material for filling the microorganism contact material having a large specific surface area and porosity in the inner space of the insertion portion of the outer carrier expanded and expanded at high temperature after the molding of the first step (S41) The charging phase.

The fifth step (S45) is for the interpolation for filling the microbial contact material in the fourth step (S44) and inserting the interpolation carrier, the cooling contraction is completed in the second step, to one or both inlets of the insertion portion of the thermally expanded outer carrier Insertion of the carrier.

In the sixth step S46, the interpolation carrier is allowed to stand at room temperature for a predetermined time or cooled by allowing the outer carrier into which the interpolation carrier is inserted through the fifth step S45 to be cooled to room temperature and to undergo a cooling contraction. And the outer carrier to be in close contact with each other, and the coupling step by cooling shrinkage to prevent the separation of the microbial contact material filled in the inner space of the insertion portion.

7 is a perspective view of a spherical fluidized bed biofilm carrier according to the present invention.

As in this embodiment, the fluidized biofilm carrier having a spherical outer shape can alleviate the breakage and abrasion of the corner portion than the cylindrical shape in the first or second embodiment, and combines various lengths of tubular pores 4b. There is an advantage to this.

8 is a conceptual diagram of a fluidized bed biofilm carrier equipped with a feather according to the present invention.

As shown in (a) of FIG. 8, a screw-type wing feather 7 is attached to the outer surface of the biofilm carrier, and a flat wing feather 7a can be attached to one side or both sides of the biofilm carrier as shown in FIG. 8 (b). Can be. In addition, as shown in (c) of FIG. 8, the fluidized biofilm carrier rotates or spirals in the reaction liquid by forming the interpolation carrier itself inserted into the insertion portion of the outer carrier into a screw or rotor blade type blade 7b. Since the trajectory is formed, the contact efficiency between the substrate and the biofilm can be increased.

In addition, the tubular cavity (4, 4a, 4b) or the through-hole may be inclined so as to be inclined so that a rotational force is generated when the reaction solution passes through the tubular cavity.

On the other hand, while the biofilm carrier of the present invention has been described in the case of using the fluidized bed, the biofilm carrier of the present invention is not limited to the fluidized bed as described above, but increases the specific gravity to be deposited in water streams It may also be used as a fixed bed carrier for purification, trickling filters, and the like.

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 Simple process, economical, durable semi-permanent, mainly used for biological wastewater treatment, and can be used as a filler for deodorization tower and washing tower. In addition, the biofilm carrier of the present invention can be used as a stationary biofilm carrier in river purification or watering phases by increasing the specific gravity to be deposited.

Claims (11)

A plurality of through-holes or tubular pores of various shapes are formed to increase a specific surface area, and a plurality of through-holes or tubular pores of various forms are formed to increase a specific surface area and an outer carrier having an insertion portion in a central axis direction or one side, and the insertion An interpolation carrier inserted into the unit and coupled to each other so as not to be separated from each other, wherein one of the outer carrier or the interpolation carrier is formed of any one material having a relatively high specific gravity of synthetic resin material or ceramic material, and One is a fluidized bed biofilm, which is formed of a synthetic resin material having a relatively low specific gravity, thereby improving the fluidity in the reaction tank by adjusting the weighted average specific gravity of the biofilm carriers which have been assembled by controlling the volume composition ratio of the materials having different specific gravity. carrier. The fluidized bed biofilm carrier according to claim 1, wherein the center of gravity of the fluidized bed biofilm carrier and the buoyancy center point acting in the state of being deposited in the reaction solution are spaced apart from each other. The fluidized bed biofilm carrier according to claim 1, wherein the fluidized bed biofilm carrier is provided with at least one wing feather. Forming an interpolation carrier for molding an interpolation carrier having a plurality of tubular pores or through holes by injection molding a ceramic material by sintering or sintering a molten synthetic resin material; A step of cooling contraction of the interpolation carrier which is cooled or cooled to room temperature at high temperature and contracted by allowing the molded interpolation carrier to stand in the air for a predetermined time or cooling; Molding the outer carrier by molding the ceramic material by sintering or by injection molding the molten synthetic resin material to form an outer carrier having a plurality of tubular voids and an insert; An insertion step of inserting the interpolation carrier, which is provided in the outer support in a state of thermal expansion at a high temperature after molding and inserts the interpolation carrier having completed the cooling contraction into an inner space of the insertion part in an expanded state; The interpolation carrier is inserted into the outer carrier in a thermal expansion state at a high temperature, or allowed to stand in the air for a predetermined time or cooled to allow room temperature to be cooled and shrinkage. A method of assembling a biofilm carrier using thermal expansion and cooling contraction, comprising: a coupling step of cooling contraction to be coupled. An outer carrier having a plurality of through holes or tubular pores formed in various shapes so that the specific surface area is formed, and a net body having a plurality of through holes formed at a lower portion thereof in a central axis direction or one side thereof, and having an insert portion having a container shape or a penetrating shape at both sides thereof. And a microbial contact material filled in the inner space of the insert portion and having a large specific surface area and a large porosity, and a plurality of through holes or tubular pores formed in various shapes so that the specific surface area is increased, and a microbial contact material filled in the internal space. And an interpolation carrier which is inserted into each of the inlet of the insertion portion or both sides of the insertion portion of the insertion portion of the insertion portion so as to prevent the microbial contact material from leaking to the outside. At least one of the carrier or the microorganism contact material has a relatively high specific gravity The weighted average specific gravity of the biofilm carrier, which is formed of at least one material or ceramic material, and the other one or more is formed of a synthetic resin material having a relatively low specific gravity, and is controlled by adjusting the volume composition ratio of materials having different specific gravity. Fluidized bed biofilm carrier, characterized in that to improve the fluidity in the reaction tank by controlling the. 6. The fluidized bed biofilm carrier according to claim 5, wherein the microbial contact material comprises at least one of ceramic or activated carbon that is formed to be porous so that the specific surface area and porosity are relatively increased. 6. The fluidized bed biofilm carrier according to claim 5, wherein the microbial contact material has a sponge shape in which a plurality of pores are in communication with each other so that the specific surface area and the porosity are increased. The fluidized biofilm carrier according to claim 5, wherein the microbial contact material is a fibrous microbial contact material formed by weaving or superposing a fiber in a shape having a relatively large specific surface area and having a large porosity. The fluidized bed biofilm carrier according to claim 5, wherein the fluidized bed biofilm carrier is provided with at least one wing feather. The fluidized bed biofilm carrier according to claim 5, wherein the center of gravity of the fluidized bed biofilm carrier and the center of buoyancy acting in the state of being deposited in the reaction solution are spaced apart from each other. Forming an interpolation carrier for molding an interpolation carrier having a plurality of tubular pores or through holes by injection molding a ceramic material by sintering or sintering a molten synthetic resin material; A step of cooling contraction of the interpolation carrier which is cooled or cooled to room temperature at high temperature and contracted by allowing the molded interpolation carrier to stand in the air for a predetermined time or cooling; A plurality of tubular pores are formed by injection molding a molten synthetic resin material by sintering or sintering a ceramic material, and a perforated form is formed on both sides, or a net is formed on one side to form an outer carrier provided with a container-shaped insert. Forming the outer carrier; A step of filling the microbial contact material, which is provided in the outer carrier in a state of thermal expansion at a high temperature after molding and fills the microbial contact material having a large specific surface area and porosity in the inner space of the insertion part in an expanded state; For interpolation for inserting the interpolation carrier having completed the cooling contraction in one or both inlet of the insertion portion is provided in the outer carrier in the state of thermal expansion at a high temperature after molding and filled with the microbial contact material in the state that the inner space is expanded Inserting the carrier; By allowing the outer carrier to be inserted into the intermittent carrier at a high temperature for a certain time, the outer carrier is cooled or cooled to room temperature by cooling or shrinking, so that the inner carrier and the outer carrier are brought into close contact with each other. And a coupling step by cooling contraction to prevent separation of the microbial contact material filled in the inner space of the insertion unit; Assembly method of the biofilm carrier using thermal expansion and cooling shrinkage comprising a.

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