KR20180023395A - Method of making pore filter media having iron oxide nano particles, and making apparatus thereof - Google Patents

Abstract

The present invention relates to an apparatus for producing a porous filter medium to which a positive charge is applied, and a method therefor. More specifically, provided is a method for producing a porous filter medium to which a positive charge is applied by using nano-sized glass fibers to remove contaminants present in water, and an apparatus for producing the same. The porous filter media produced by the production method and the production apparatus of the present invention ensure excellent filtration efficiency of filters owing to positive charge applied thereto, and also enable production of filter media continuously.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a porous filter medium manufacturing apparatus and a method for manufacturing a porous filter media having iron oxide nanoparticles added thereto,

The present invention relates to an apparatus and a method for manufacturing a porous filter media to which positive charge is added, and more particularly, to a porous filter media manufacturing apparatus and method for removing positively charged contaminants, A method for manufacturing a medium and an apparatus for manufacturing the same.

The porous filter media manufactured by the manufacturing method and the manufacturing apparatus of the present invention are advantageous in that the filtration efficiency of the filter is excellent because positive charge is added and that the filter media can be continuously produced.

The present invention relates to an apparatus and a method for manufacturing a porous filter media to which positive charge is added, and more particularly, to a porous filter media manufacturing method and apparatus for removing positively charged contaminants from a porous filter media having positive charges of iron oxide nanoparticles A method for manufacturing a medium and an apparatus for manufacturing the same.

Generally, there are many ionic substances and chemicals, including natural organic materials (NOM) in water, and they are not removed in the process of water treatment but act as a cause of generating new pollutants. In addition, the presence of pathogenic microorganisms, which have not been removed by chlorine disinfection, has recently been controversial. Pathogenic microorganisms, such as viruses, crytosphoridium, and Giardia, are released into the environment through human and animal feces and are present in surface water and groundwater as well as in sewage. Viruses are 0.02-0.09 ㎛ in size, bacteria are 0.4-14 ㎛ in width and 0.2-1.2 ㎛ in width. Protozoa such as cryptosporidium and xylydia are relatively large compared to viruses and bacteria. Because viruses are very small in size, they are hardly treated by general filtration. They form stable cysts and survive for several months in water. At present, in order to remove trace contaminants in water, advanced coagulation treatment, activated carbon adsorption and membrane filtration are proposed in the water treatment process. Recently, a large-scale study on the water treatment process using membranes is underway. Particularly, membrane filtration has been recently studied and commercialized in advanced water treatment process. However, it is still not widely used due to economical cost and technical problems. Existing filters including membranes classified as reverse osmosis membrane (RO), nanofiltration membrane (NF), ultrafiltration membrane (UF), and microfiltration membrane (MF), use conventional pore size to measure contaminants in water It is a system to remove.

The microfibre filter widely used for conventional water treatment has a disadvantage in that the efficiency is low because the filtration area is small and there is no electrostatic force. The membrane filter has a disadvantage in that the filtration efficiency is high but the pressure loss is large. Accordingly, studies have been made to increase the filtration efficiency of the fiber filter and decrease the pressure loss by applying an electrostatic force to the nano-size pore-sized fiber filter to compensate for the disadvantages of the microfiber filter and the membrane filter.

1 is a conceptual diagram for comparing the filtering principle of a conventional filter and a porous filter to which a positive charge is added. In general, dissolved and non-dissolved contaminants are ionized and distributed in water, and microorganisms such as viruses are negatively charged in water. Research is being conducted on filters that adsorb pollutants using the electrostatic properties of these pollutants. The study of the filter with the positive charge has not been done in Korea and it has been developed mainly in foreign countries. In the case of foreign countries, studies have been carried out mainly to increase the filtration efficiency by adding a positive charge to the membrane membrane, and the study of adding a positive charge to the fiber filter is considered to be by hand. As a foreign study to add a positive charge to a fiber filter, Paul Co. in USA produced a porous filter by mixing carbon particles (200 to 2000 μm) and a low-density polyethylene binder at ambient temperature for 1 to 2 minutes, Ltd. manufactured a porous filter by mixing carbon particles (30 to 840 μm) and ultra-high molecular weight polyethylene binder, and Katie, USA produced a porous filter by pressurizing a polyethylene-vinyl copolymer at high temperature and high pressure.

However, the fiber filter manufactured in such a foreign country has a disadvantage in that the filtration efficiency is low due to the low electrostatic force because the Zeta potential is low. In addition, even in the case of a fiber filter material, it is possible to manufacture nano-sized fibers, and there is almost no research that imposes electrostatic force on glass fibers having excellent physical properties.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a method and a manufacturing method of a water treatment nanofilter media having characteristics of high efficiency and low pressure loss in which static electricity is applied using nano- Device.

In order to achieve the above object, a method of producing an additional porous filter media positive charge of this invention ⅰ) Fe ₂ (SO ₄₎ the _aqueous solution FeOOH colloidal solution and FeSO ₄ aqueous solution was prepared by adding a NaOH aqueous solution of triethanolamine (II) TEA complex solution prepared by adding an amine-based solvent such as tetraethylorthosilicate (TEA) to a precursor of FeOOH and Fe (II) TEA, heating the precursor to 100 ° C for 1 to 20 hours Separating using Nd-Fe-B magnets, washing with distilled water, and drying in air at 75 DEG C for 12 hours to obtain iron oxide nanoparticles having amine functional devices; Ii) preparing a slurry by mixing and stirring 50 to 70% by weight of glass fiber having a diameter of 0.05 to 0.75 탆, 20 to 45% by weight of cellulose having a diameter of 10 to 20 탆 and 5 to 10% Iii) laminating the slurry prepared in step ii) to a hydrophilic microfine mesh; iv) drying to remove moisture from the slurry laminated to the mesh; v) maintaining the moldability of the filter media and maintaining a uniform thickness To form a filter media and pressurize said slurry through a roller pressuring device to produce a filter media to regulate the pore size through strengthening of bonds between the fibers, vi) to remove residual moisture in the filter media past said roller pressurizing device Removing the filter media from the belt, and winding the filter media. On the other hand, the celluloid is selected from the group consisting of Wood Pulp, cotton, wool, jute, hemp, and mixtures thereof.

The apparatus for producing a porous filter media to which a positive charge is added according to the present invention comprises an agitator for mixing and agitating glass fiber, cellulose, and iron oxide nanoparticles as a filter media material in a slurry state, a slurry supply device for uniformly laminating the agitated slurry A hopper, a slurry feed hopper for feeding the slurry to homogenously stack the agitated slurry, a belt on which a slurry is deposited from the slurry feed hopper to form a filter medium, a vacuum for removing moisture in the filter media stacked on the belt A suction device, a roller presser device for maintaining the moldability of the filter media and forming filter media of uniform thickness and for controlling the pore size through strengthening of bonds between the fibers, removing residual moisture in the filter media passed through the roller presser device A drying device for passing the drying device And a filter formed over the take-up device to take the media volume was separated and the belt, and the filter media control unit for controlling the whole production apparatus.

According to a preferred embodiment of the present invention, a tension adjusting device is additionally provided to adjust the tension of the belt, the microfiber hydrophilic mesh is used for the belt, and the hot air drying device is used for the drying device. The vacuum suction apparatus can use one or more vacuum pumps, and the suction force of the vacuum pump is enhanced as the suction force is further away from the slurry supply hopper. This is because as the distance from the slurry feed hopper is increased, the suction force is required to be strengthened because the moisture content of the filter medium is small. According to a preferred embodiment of the present invention, the slurry supply hopper includes an overflow pipe for uniformly depositing slurry on a belt, and the control unit controls the driving speed of the belt, the vacuum suction force of the vacuum suction apparatus, The slurry feed rate of the slurry feed hopper, the pushing force of the pressurizing roller, and the gap between the belt and the slurry feed hopper.

As described above, the porous filter media manufactured by the manufacturing method and the manufacturing apparatus of the present invention have an advantage that the filtration efficiency of the filter is excellent because positive charge is added, and that the filter media can be continuously manufactured.

It is advantageous to reduce the cost of the virus detection test by localizing the virus detection filter which depends on the foreign acid filter to a porous water treatment filter with positive charge. When the developed filter is applied to a large-scale treatment facility, It is possible to implement a certain virus removal effect without being influenced by the external environment, and is also effective in removing pathogenic microorganisms.

In addition, by reducing the pollutant load of the water entering into the disinfection process, it is possible to reduce the possibility of THM and to maintain an appropriate level of residual chlorine, thereby having a direct effect on the water pollution caused by the pipe network failure.

Fig. 1 is a conceptual diagram for comparing the filtering principle of a conventional filter and a porous filter to which a positive charge is added. Fig. 1a shows a case where the pore size is smaller than the size of a virus as a conventional filter, The size of the pore is larger than the size of the virus.
2 is a schematic view of a porous filter media production apparatus with a positive charge according to a preferred embodiment of the present invention.
Figure 3 shows a SEM photograph of a porous filter media with a positive charge, according to a preferred embodiment of the present invention.

In order to achieve the above object, the triethanolamine to the production process of the invention an additional porous filter media positive charge of the) Fe ₂ (SO _{4) 3} aqueous solution FeOOH colloidal solution and FeSO ₄ aqueous solution was prepared by adding a NaOH aqueous solution ( (II) TEA complex solution prepared by adding an amine-based solvent such as TEA to a precursor of FeOOH and Fe (II) TEA, heating the precursor at 100 ° C for 1 to 20 hours, -Fe-B magnet, washed with distilled water, and dried in air at 75 ° C. for 12 hours to obtain iron oxide nanoparticles having an amine functional device; ) Mixing 50 to 70% by weight of glass fibers having a diameter of 0.05 to 0.75 탆, 20 to 45% by weight of cellulose having a diameter of 10 to 20 탆 and 5 to 10% by weight of the iron oxide nanoparticles to prepare a slurry, Laminating the slurry prepared in the step ii) to a hydrophilic microfine mesh; and drying the slurry to remove the moisture of the slurry laminated on the mesh), maintaining the moldability of the filter media, Forming a filter media by pressing the slurry through a roller pressing device to form a filter media to control the pore size through strengthening of bonds between the fibers, removing residual water in the filter media that has passed through the roller pressing device, and ) Separating the filter media from the belt and winding the filter media. On the other hand, the celluloid is selected from the group consisting of Wood Pulp, cotton, wool, jute, hemp, and mixtures thereof.

The apparatus for producing a porous filter media to which a positive charge is added according to the present invention comprises an agitator for mixing and agitating glass fiber, cellulose, and iron oxide nanoparticles as a filter media material in a slurry state, a slurry supply device for uniformly laminating the agitated slurry A hopper, a slurry feed hopper for feeding the slurry to homogenously stack the agitated slurry, a belt on which a slurry is deposited from the slurry feed hopper to form a filter medium, a vacuum for removing moisture in the filter media stacked on the belt A suction device, a roller presser device for maintaining the moldability of the filter media and forming filter media of uniform thickness and for controlling the pore size through strengthening of bonds between the fibers, removing residual moisture in the filter media passed through the roller presser device A drying device for passing the drying device And a filter formed over the take-up device to take the media volume was separated and the belt, and the filter media control unit for controlling the whole production apparatus.

According to a preferred embodiment of the present invention, a tension adjusting device is additionally provided to adjust the tension of the belt, the microfiber hydrophilic mesh is used for the belt, and the hot air dryer is used for the drying device. The vacuum suction apparatus can use one or more vacuum pumps, and the suction force of the vacuum pump is enhanced as the suction force is further away from the slurry supply hopper. This is because as the distance from the slurry feed hopper is increased, the suction force is required to be strengthened because the moisture content of the filter medium is small. According to a preferred embodiment of the present invention, the slurry supply hopper includes an overflow pipe for uniformly depositing slurry on a belt, and the control unit controls the driving speed of the belt, the vacuum suction force of the vacuum suction apparatus, The slurry feed rate of the slurry feed hopper, the pushing force of the pressurizing roller, and the gap between the belt and the slurry feed hopper.

Hereinafter, a manufacturing method and a manufacturing apparatus of a porous filter medium to which a positive charge is added will be described in more detail.

The porous filter media positive charge is added in accordance with the present invention, first, Fe ₂ (SO ₄₎ addition of triethanolamine (TEA) amine series solvents such as the _aqueous solution FeOOH colloidal solution and FeSO ₄ aqueous solution was prepared by adding a NaOH solution in FeOOH and Fe (II) TEA precursors were prepared by mixing the Fe (II) TEA complex aqueous solution prepared as described above with vigorous stirring. The precursor was heated to 100 ° C for 1 to 20 hours and then separated using Nd-Fe-B magnets After washing with distilled water, it is dried in air at 75 ° C for 12 hours to prepare iron oxide nanoparticles having an amine functional device.

After preparing the iron oxide nanoparticles, 50 to 70 wt% of glass fiber having a diameter of 0.05 to 0.75 탆, 20 to 45 wt% of cellulose having a diameter of 10 to 20 탆, and 5 to 10 wt% of the iron oxide nanoparticles were mixed and stirred To prepare a slurry. Here, since the glass fiber is in the form of a nano-sized powder, glass fibers in which sufficient water is added and dispersed through stirring are used before adding the iron oxide nanoparticles. Cellulose, which is also added to water and dispersed by stirring, is used. Celluloids are Wood Pulp, cotton, wool, jute, hemp or mixtures thereof.

Hereinafter, description will be made with reference to the drawings shown in FIG. 2 is a schematic view of a porous filter media production apparatus with a positive charge according to a preferred embodiment of the present invention.

The stirrer 12 prevents the fibers from being entangled and disperses them uniformly in the solution, and serves to distribute the iron oxide nanoparticles in a solution at a concentration. In the production of the filter media, it is more important than evenly distributing the filter components, which will influence the performance of the filters produced. Therefore, the slurry should be sufficiently agitated through a stirrer. Preferably about 3 to about 10 hours. In addition to the stirrer 12, a dispersant may be added to the fiber type to disperse the fiber. The speed of the driving motor for driving the stirrer 12 is adjustable, and a left-right rotating motor is used. The rotating speed of the stirrer is preferably 1000 to 3000 RPM.

The slurry 22 of the agitator 12 is introduced into the slurry feeding hopper 18 by the pump 16 and then laminated on the hydrophilic micro-meshed mesh belt 20. [ In order to produce a uniform filter media, it is important to uniformly deposit the slurry 22 on the microfiber mesh belt 20 in order to deposit the slurry 22 on the belt 20 without clogging through the slurry jet nozzles It is necessary to design the slurry supply device so as to keep the shape of the supply nozzle uniformly sprayed, the gap with the belt, and the water pressure in the slurry nozzle constant. In this apparatus, an overflow pipe (18) is provided so that the slurry is constantly supplied to the injection nozzle so that the slurry injected from the injection nozzle can be uniformly deposited on the belt. The slurry 22 is supplied and laminated to the mesh belt 20 having an inclination angle of 5 to 30 ° through a control valve (not shown) in which the slurry supply is controlled to uniformly stack the slurry and adjust the thickness of the filter media . The mesh uses microfiber mesh of 70 ~ 80 mesh of hydrophilic PET material. The stacking height of the slurry is adjusted according to the thickness of the filter medium to be finally made, and can be appropriately adjusted according to the driving speed of the belt and the slurry supply flow rate of the slurry supply hopper 14. Preferably, the driving speed of the belt is 10 to 100 m / min.

The slurry laminated on the microfine mesh belt 20 is removed by the vacuum suction device 26. Vacuum pressure of 10 to 100 cmHg is applied through the vacuum pump of the vacuum suction apparatus to remove moisture in the filter medium (i.e., slurry). The moisture on the filter media is removed by 90% or more through the vacuum suction device 26. The number of vacuum pumps of the vacuum suction device 26 is preferably as large as 3 to 10 in consideration of the pore size, the thickness of the filter media, and the production speed. The water suction force of the vacuum pump is strengthened as it goes away from the slurry supply hopper 14. This is because as the distance from the slurry feeding hopper 14 is increased, the suction force is required to be strengthened because the filter medium is less water. The distilled water collected in the drain can be sent to the drainage reservoir through the drainage pump and reused.

The filter media 24 that has passed through the vacuum suction device is pressurized by the rollers 28 to maintain the moldability of the filter media and to form filter media of uniform thickness and to regulate the pore size through strengthening of the bonds between the fibers. It is preferable to provide two rollers and apply pressure at a pressure of 100 to 1,000 kgf / cm 2.

The filter media 24 is dried through the hot air dryer 30 to remove residual moisture in the filter media that has passed through the roller pressurizing device. The hot air having a temperature of 100 to 150 is preferably dried. The filter media having been subjected to the hot air drying is separated from the mesh belt 20 and wound by the coin-winding device 32.

Example

Example 1.

1) An amine-based solvent such as triethanolamine (TEA) was added to an aqueous solution of FeOOH colloid prepared by adding an aqueous NaOH solution to an aqueous solution of Fe ₂ (SO ₄ ) ₃ purchased from Aldrich and FeSO ₄ purchased from Aldrich FeOOH and Fe (II) TEA precursors were prepared by mixing the Fe (II) TEA complex aqueous solution prepared as described above with vigorous stirring. The precursor was heated to 100 ° C for 1 to 20 hours and then separated using Nd-Fe-B magnets After washing with distilled water, it was dried in air at 75 ° C for 12 hours to prepare iron oxide nanoparticles having amine functional devices. Stirring was carried out through a stirrer at a speed of 1500 RPM for about 1 hour.

2) 100 g of nano-sized glass fiber (Grade 704 of Evanite Co., USA) was put into 20 L of water, and stirred at a speed of 1500RPM for 2 hours through a stirrer.

3) 100 g of cellulose (Koho-Kraft) was added to 40 L of water and dispersed for 1 hour and 30 minutes. At this time, the rotation speed of the stirrer was set at 1500 RPM.

4) The glass fiber prepared in 2) was mixed with the iron oxide nanoparticles prepared in 1) and stirred for about 2 hours.

5) The cellulose resin prepared in 3) was mixed with the solution prepared in 4) and stirred for about 1 hour to prepare a slurry.

6) After the slurry in the agitator was fed to the slurry feed hopper by means of a pump, the slurry was deposited on the microfiber mesh belt of the filter media production apparatus from the slurry feed hopper. At this time, the feed rate of the mesh belt was set at 0.5 m / min, the supplied flow rate was adjusted to 15 L / min, and the gap between the feed nozzle and the microfiber mesh belt was made as close as possible to the belt conveyance.

7) The filter media raw material slurry supplied through the feed nozzle was subjected to the first vacuum as soon as it was laminated to the microfiber mesh belt. At this time, the applied vacuum was 60 cmHg. The filter media was transferred while forming by dewatering by vacuum and bonding between the fibers. In addition, a secondary vacuum of 20 cmHg was applied so that the dewatering of the filter media and the bonding between the fibers were made more compact.

8) The filter media produced by vacuum was pressurized to 6kgf / cm2 through a pressure roller. The filter media having passed through the pressure roller was subjected to hot air drying at a temperature of 130 ° C. After hot air drying, the filter media was wound up through a winding device. The thickness of the filter media was adjusted by controlling the feed rate and feed rate of the microfiber mesh belt.

Example 2.

In the same manner as in Example 1, a filter medium was prepared while varying the amount of iron oxide nanoparticles. The zeta potential values were then measured to analyze the electrical properties of the fabricated filter media. The zeta potential value was measured using an Anton-paar SurPASS 3 zeta potential meter.

Table 1 shows the values of the glass fiber, cellulose, iron oxide nodule particles used in each example and the zeta potential value of the filter media produced by each example.

Table 1. Fabrication of Filter Media by Iron Oxide Nanoparticle Content

Glass Fiber (g) Cellulose
(g) Iron oxide nanoparticles (g) Zeta Potential
(mV) Example 1 100 100 10 1.79 Example 2 100 100 20 15.9 Example 3 100 100 30 15.31 Example 4 100 100 40 22.00 Example 5 100 100 70 19.77

As can be seen from the above table, in the case of Examples 1 to 5, that is, the zeta potential value of the filter media prepared by changing the amount of the iron oxide nanoparticles increased in proportion to the amount of the iron oxide nanoparticles, . And it was found that it shows an excellent effect in terms of stability.

In the case of Example 4 where the zeta potential value is the highest, the filter media prepared by using 100 g of glass fiber, 100 g of cellulose and 40 g of iron oxide nanoparticles and the filter media prepared by using only 100 g of glass fiber The filtration efficiency was compared and analyzed. To test the filtration performance of the porous filter media, a single pass type performance evaluation device according to ISO 4572 international standard was constructed. The filtration efficiency, differential pressure, and flow rate of the porous filter media were measured using this device. The filtration efficiency was measured by measuring the turbidity and particle concentration before and after the porous filter media using a turbidimeter and a particle counter under 10 lpm flow rate. Table 2 shows the filtration efficiency of the filter media manufactured by Example 4 and the filter media produced using only glass fibers.

Table 2. Efficiency Change with Charge Modification

division Filtration Efficiency,% 0.109 탆 0.234 탆 0.357 m 0.481 탆 0.794 탆 Treated (Example 4) 13.9 95.0 99.4 99.5 99.5 Untreated 1.0 5.0 28.0 68.0 98.5

As can be seen from the above table, the change of the filtration efficiency according to the particle size tends to increase as the particle size increases, and when the charge is added, the filtration efficiency of 99% or more for particles of 0.357 탆 or more As shown in Fig. It can be seen that the efficiency when the charge is not added sharply decreases.

The differential pressure was measured at 0 ~ 30 lpm and the differential pressure was 0 ~ 17.5 psi. The maximum differential pressure was measured at 80 psi.

In order to analyze the pore characteristics of the filter media produced in Example 9, SEM photographs were analyzed using Image Processing Technique (Bastec, IMT). 3 shows an SEM photograph of the porous filter media, and Table 3 below shows the results of analysis by SEM photographs.

Table 3. Porosity Filter media  Pore property

Analysis item Pore Density Pore Size Fiber Thickness Analysis 15 to 41% 0.07 to 0.81 탆 0.74 to 0.86 탆

As can be seen from the above table, the pore size of the porous filter media is in the range of 0.07 to 0.81 μm and the pore density is in the range of 15 to 41%.

The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the claims of the invention to be described below may be better understood. Additional features and advantages that constitute the claims of the present invention will be described in detail below. It should be appreciated by those skilled in the art that the disclosed concepts and specific embodiments of the invention can be used immediately as a basis for designing or modifying other structures to accomplish the invention and similar purposes.

In addition, the inventive concepts and embodiments disclosed herein may be used by those skilled in the art as a basis for modifying or designing other structures to accomplish the same purpose of the present invention. It will be apparent to those skilled in the art that various modifications, substitutions and alterations can be made hereto without departing from the spirit or scope of the invention as defined in the appended claims.

100: Device for producing filter media of the present invention 12:
14: Slurry supply hopper 16: Pump
18: overflow tube 20: microfiber mesh belt
22: Slurry 24: Filter media
26: Vacuum suction device 28: Roller pressing device
30: drying device 32: winding device
34: tension adjusting device

Claims (9)

1. A method of fabricating a porous filter media with positive charge,
Ⅰ) Fe ₂ (SO ₄₎ vigorously for ₃ solution FeOOH colloidal solution prepared by adding an aqueous NaOH solution to and triethanolamine (TEA), such as the amine-based solvent is a Fe (II) TEA complex solution prepared by addition of the FeSO ₄ aqueous solution FeOOH and Fe (II) TEA precursors were prepared. The precursors were heated to 100 ° C for 1 to 20 hours, separated using Nd-Fe-B magnets, washed with distilled water, Time-drying to prepare an iron oxide nanoparticle having an amine-based functional device,
Ii) preparing a slurry by mixing and stirring 50 to 70% by weight of glass fiber having a diameter of 0.05 to 0.75 탆, 20 to 45% by weight of cellulose having a diameter of 10 to 20 탆 and 5 to 10%
Iii) laminating the slurry prepared in step ii) on a hydrophilic microfine mesh,
Iv) drying to remove moisture from the slurry laminated to the mesh,
V) pressurizing the slurry through a roller pressuring device to maintain the moldability of the filter media and to form a filter media of uniform thickness and to adjust the pore size through reinforcing the bond between the fibers,
Vi) removing residual water in the filter media through the roller pressurizing device, and
(Iii) separating the filter media from the belt to take up the filter media. The method according to claim 1,
Wherein the celluloid is a celluloid selected from the group consisting of Wood Pulp, cotton, wool, jute, hemp, and mixtures thereof. An apparatus for producing a positive-charged porous filter media,
A stirrer for mixing and stirring glass fiber, cellulose, and iron oxide nanoparticles as a filter media material in a slurry state,
A slurry feed hopper for feeding the slurry to uniformly stack the stirred slurry,
A belt on which a slurry is deposited from the slurry feed hopper to form a filter medium,
A vacuum suction device for removing moisture in the filter media stacked on the belt,
A roller pressurizing device for maintaining the moldability of the filter media, forming filter media having a uniform thickness, and adjusting the pore size through reinforcing the bond between the fibers,
A drying device for removing residual moisture in the filter media that has passed through the roller pressurizing device,
A winding device for winding the filter media formed through the drying device by separating the filter media from the belt, and
And a control unit for controlling the filter media manufacturing apparatus as a whole. The method of claim 3,
Further comprising a tension adjusting device for adjusting the tension of the belt. The method of claim 3,
Wherein the belt is a microfiber hydrophilic mesh. The method of claim 3,
Wherein the vacuum suction device includes at least one vacuum pump, wherein the suction force of the vacuum pump is enhanced as the suction force of the vacuum pump is further away from the slurry supply hopper. The method of claim 3,
Wherein the drying device is a hot air drying device. The method of claim 3,
Wherein the slurry feed hopper comprises an overflow tube to evenly deposit the slurry on the belt. The method of claim 3,
Wherein the control unit adjusts the driving speed of the belt, the vacuum suction force of the vacuum suction apparatus, the stirring speed of the agitator, the slurry supply flow rate of the slurry supply hopper, the pressing force of the pressure roller, and the gap between the belt and the slurry supply hopper Media manufacturing apparatus.

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