KR20090034595A - Filter which have a effective filtration and sterilization of suspended solid and super fine particle in the water and air - Google Patents

Abstract

A filter structure is provided to gain excellent bactericidal action at the same time while effectively removing ultra-fine dust particles contained in contaminated air and suspended solids in water. A purification filter separates ultra-fine dust particles contained in contaminated air and suspended solids in water. A method for manufacturing the purification filter comprises the following steps of: attaching a positive charge material and a silver system material on a surface of a filter medium by using a binder; filtering and sterilizing the ultra-fine dust particles or suspended solids; and supplying a material one or more selected from polyethylene, polypropylene, polyvinylchloride, ethylene vinyl acetate, polyethylene terephthalate, polycarbonate, PBT, polyacetal and polyamide etc.

Description

Filter which have a effective filtration and sterilization of suspended solid and super fine particle in the water and air.}

The present invention relates to a filter structure for effectively removing fine dust of suspended particles in water or contaminated in air while at the same time obtaining excellent sterilization effect.

More specifically, when the surface of the filter medium for filtering the suspended solids in the air or the fine particles in the air is coated with a positively charged substance and a silver-based substance, the pretreatment is carried out by the magnetic force so that the magnetic powder easily adheres to the magnet. Fine particles of suspended matter or ultrafine particles in air easily adhere to the surface of the filter medium by the potentiometric method, and suspended matter in the air attached to the surface of the filter medium or fine dust in the air is caused by the silver-based material contained in the surface of the filter medium. As the bacteria are eliminated, the conventional filter medium is intended to provide a filter structure capable of simultaneously eradicating the bacteria contained in the suspended solids or ultra-fine particles while overcoming the disadvantage that the fine suspended solids in the air or the ultra-fine particles in the air cannot be filtered. will be.

A filter is defined as a thin film that filters foreign matter such as suspended solids contained in liquids or foreign matter from fine dust in gas.

The filter media for removing suspended solids in water mainly uses metal screens, sand, and fibers.The metal screen has excellent durability against fluid flow and impact of impurity particles. Filtration efficiency may be deteriorated due to damage due to collision or abrasion, and fiber has the advantage of being able to be conveniently used for filtration work because of its flexibility in fiber, but it has the disadvantage of being very weak in strength. In order to remove the material, it is important to select the appropriate type according to the type of fluid and the size, shape and concentration of the solid particles.

In addition, depending on the requirements of the filtration process, that is, the minimum allowable particle size, filtration efficiency, continuous operation, etc., the type of filter medium, filtration area, and back-wash method should be selected appropriately according to the treatment object for optimum operation performance. Economics can be secured.

In general, the method for removing the dust of ultra-fine particles contaminated in the air can be roughly divided into electrostatic precipitating and dry and wet filter method.

The electrostatic precipitating method gives the dust in the air a polarity so that it attracts the dust to the dust collecting plate as if the magnet pulls the different poles, so the inside is simple and the noise is low. There is a large amount, and there is an advantage that the filter does not need to be replaced, but proper maintenance conditions that need to periodically clean the dust collecting plate to collect the dust, there is a disadvantage that there is a dust collection effect must be supplied with power.

Dry hepa filter is a method of filtering dust in the air like filter paper using cloth or paper with small holes. The filter type can be classified in the order of Pre-Filter → Medium Filter → HEPA → ULPA according to how small the dust can be filtered out. ULPA is used as the type of filter that filters even the smallest dust. This filter type is mainly used in semiconductor manufacturing factories, hospitals and laboratories in clean rooms, and has recently been used in air cleaners.

Filters such as HEPA and ULPA are often used in places where clean air is required because they filter out very fine dust.However, as with most air cleaners, if the filter is not replaced or cleaned in a timely manner, bacteria or mold may grow in the filter and clean air. There is also a possibility that the filter to be made to discharge contaminated air into the room rather than occur.

In addition, the HEPA or ULPA filter has a problem that the air through the air is very small, so that the force for passing the large air needs to be large, and a large amount of power is required for this, and the noise may be increased.

In addition, the wet filter type sprays liquid such as water into a small vapor as if sprayed with a sprayer, and the water droplets combine with the dust to remove the dust, or absorb the liquid such as water through the filter to contact the air and water. As a way to remove the problem, there is a problem that the efficiency is lowered when used in a place where the air speed is fast, but such a wet filter removes soluble (water-soluble) harmful gas well and at the same time the effect of humidification It can be given.

Until now, the filter structure for general water treatment or air quality treatment has been evaluated as a result of simply passing through the ultra-fine particles smaller than the pore formed in the filter body without filtering, resulting in lowering the effectiveness of the filter. In the case of the HEPA or ULPA filter of the air filter, fine particles may be filtered, but a vacuum device must be added, a relatively large amount of power is required, and the noise is large.

In the case of removing suspended solids in water, in order to sterilize water while removing fine suspended solids contaminated in water, the filter and sterilizer must be configured independently, thereby increasing the manufacturing cost required and increasing the manufacturing cost. Small suspended solids could not be filtered and the filter and sterilizer were configured independently, resulting in a bulky device and increased logistics costs.

In the spring or early winter of Korea, yellow dust of ultra fine particles occurs, causing many people to suffer and damage. A filter (mask) is needed to protect the respiratory system of the human body. And they are struggling to find a special method for removing the yellow dust composed of contaminants such as heavy metals, and the situation is causing an uproar among people who visit an otolaryngology hospital in spring and patients who are infected with bacteria due to the impact of the yellow dust.

In order to solve the above problems, the prior art disclosed in order to provide a filter that is beneficial to the human body by treating microparticles floating in the water or in the air, or removing bacteria, the technique disclosed in Korea Patent Publication No. 2007-068070 Composition having antimicrobial performance simultaneously containing nanosilver zeolite adsorbed on zeolite powder, fishery herb extract and 2,4,4-crechloro-2-hydroxy diphenyl ether, filter for air purification using the same, and method for producing same The present invention also discloses an antimicrobial coating agent for HEPA filter and the coating agent which can prevent odor and secondary pollution caused by microorganisms by killing bacteria and fungi that can be filtered out of HEPA filter. It is proposed a hepa filter coated with a, and in Korea Patent Publication No. 2005-0072283 technology prefill The present invention provides a pre-filter and a method of manufacturing the same, which prevents nano silver from falling off from a polypropylene yarn by mixing polypropylene raw materials and a nano silver colloidal solution at a predetermined ratio during the preparation of the present invention, and Korean Patent Publication No. 2005-0119439 Presents a filter filter with excellent sterilization and antimicrobial function against coronaviruses. Hepa filter utilizes acidification and antibacterial function of polarized aqueous solution by adding lactic acid and organic acid component.

Analyzing the patented technology, Korean Patent Publication No. 2007-0068070 discloses antimicrobial or antiviral synergistic against various microbial species, such as human flu virus and avian influenza virus, as well as bacteria and fungi by a composition having antimicrobial performance. Although it may be effective, ultrafine particles or viruses smaller than the pore size of the filter medium can escape the filter pore, and thus have the disadvantage that they cannot exhibit the effect of perfect antibacterial and filtration.

The Korean Patent Publication No. 2006-0102590 technology proposed in the above patent is simply coated with an antimicrobial agent on the hepa filter to kill microorganisms remaining on the filter surface like the existing hepa filter, thereby preventing the smell caused by the propagation of microorganisms. Since the suction force of the process must exert the driving force in the same manner as the conventional method, it can be explained that the technical progress with the conventional HEPA filter is not so large.

Korean Patent Publication No. 2005-0072283 proposed in the above patent does not have good affinity for preparing a prefilter because the affinity of polypropylene raw material, which is a polymer, and a nanosilver colloidal solution in an aqueous solution state is poor during the mixing process. However, since the colloidal nanosilvers are mixed inside the polypropylene prefilter, the antimicrobial effect of silver nanoparticles, which exhibits substantially antimicrobial effect, is not likely to exist on the surface of the prefilter. The disadvantage is that small suspended solids and fine dust are not filtered.

Korean Patent Publication No. 2005-0119439 proposed by the above patent uses an electrostatically treated nonwoven fabric having excellent air permeability and low pressure loss to collect more than 99.97% of the messe dust contained in the outside air. The chitosan and silver antibacterial agent is included to explain that the bacteria or viruses attached during the filtration process can be killed, but the technical idea of the present invention is coated with chitosan or a polymer coagulant to provide a positive charge on the surface of the filter medium in water or It can be explained that the technical idea is completely different from having a mechanism for removing suspended solids having negative charges contaminated in air or fine particles of ultra-fine particles by a charge method.

Accordingly, the present inventors can not filter the suspended solids in the water or ultra fine particles in the air finer than the filter media pores, and do not have excellent filtration efficiency by passing the filter media pores. The invention started with the problem of recognizing the problem that can cause problems caused by bacterial infection by not killing the bacteria or viruses contaminated with the suspended matter or dust of ultra-fine particles at the same time.

Since the surface of the filter medium is coated with a positively charged material and a silver-based material, fine particles of suspended solids in the water or ultra-fine particles in the air, which are negatively charged as magnetic powder easily adheres to the magnet by magnetic force, are applied to the surface of the filter medium by the potential difference method. Easily attached, and confirmed the research results that can be eradicated by the silver-based material bacteria contained in the suspended solids or fine dust attached to the surface of the filter medium, and completed the present invention.

Therefore, the present invention allows the fine particles of the fine particles contaminated in the air or suspended matter contained in the water to easily adhere to the surface of the filter medium by the potentiometric method, and to remove bacteria contained in the suspended matter or fine dust attached to the surface of the filter medium. It is an object of the present invention to provide a purifying filter for water or air that can be eradicated by silver-based materials.

In addition, another object of the present invention is to increase the air gap between the filter medium or the air purifier in the mouse mask or gas mask for preventing respiratory diseases in places contaminated with dust or harmful gases while solving the inconvenience of breathing uncomfortable It has the purpose to use in the filter industry by providing a filter structure having a better filter effect and antibacterial effect by the potential difference method.

According to the present invention, when a positively charged material and a silver-based material are coated on the surface of a filter medium for filtering suspended solids or airborne particles, the suspended solids or air in the water are negatively charged as magnetic powder easily adheres to the magnet by magnetic force. The fine dust of the ultrafine particles in the surface easily adheres to the surface of the filter medium by the potentiometric method, and the suspended solids or bacteria contained in the fine dust adhered to the surface of the filter medium are removed by the silver-based material, and thus the fine particles in the water finer than the conventional filter medium voids. There is a feature of the invention to provide a filter structure capable of simultaneously eradicating the bacteria contained in the suspended solids or ultra-fine particles while overcoming the disadvantage that can not filter the suspended solids or ultra-fine particles in the air.

Hereinafter, the present invention will be described in detail.

The filter medium serves to remove airborne particles or fine dust or dust in the air by providing voids in the filter medium, and serves as a carrier for coating positively charged materials, silver-based materials and adsorbents. . In the case of the purpose of antibacterial while removing suspended solids or ultra-fine particles contaminated in water or air, the surface of the filter medium may contain a positive charge material and a silver-based material, and when removing the harmful substances in water or air together with the positive charge material and Adsorbents may be included in addition to the silver-based material, and filter media of various materials may be used, and filter media of various shapes such as woven or non-woven fabrics may be applied thereto, and water filters, masks, and the like may be applied using the mechanism of the present invention. It has a technical idea that can be applied to various applications of gas mask, air purification system, air conditioner, insect screen and filter net.

The filter media may be made of polyethylene naphthalate, polyester, polypropylene, polystyrene, polyethylene, polypropylene, polyvinyl chloride, ethylene vinyl acetate, polyethylene terephthalate, polycarbonate, polybutylene terephthalate, polyacetal, polyamide, and the like. One or more materials selected from the group consisting of may be used, and when used in a high temperature region, at least one selected from the group consisting of high temperature ceramic fibers, specifically glass fibers, ceramic fibers and silica glass fibers Can be used.

The positive charge material may be provided consisting of chitosan or a polymer coagulant.

Chitosan used in the present invention may be a material obtained by deacetylating chitin contained in crab, crayfish and shrimp shells in a range of 60% or more, preferably 65 to 98%. At this time, the molecular weight of the chitosan is preferably in the range of 10,000 to 250,000, preferably in the range of 10,000 to 100,000, more preferably in the range of 30,000 to 70,000. When the molecular weight is less than 10,000, not only the adhesion is insufficient when coating the filter media, but also the potential of positive charge is lowered, so that fine dust of negatively charged suspended matter or ultra-fine particles can provide a low adhesion rate by the potentiometric method. When the molecular weight is exceeded, it is advantageous to maintain the above range because a problem arises in that the efficiency of workability decreases due to viscosity swelling during dissolution with a solvent.

The chitosan coating having a positive charge on the filter medium according to the present invention dissolves the chitosan in a solvent, deposits the filter medium to coat the surface, and then filters the filter having a positive charge property on the surface of the filter medium by drying the solvent. Manufacture.

The solvent may be an acid such as an organic acid or an inorganic acid. Specifically, lactic acid, citric acid, acetic acid, sulfuric acid, hydrochloric acid, phosphoric acid and nitric acid may be used. At this time, it is advantageous to use sulfuric acid, lactic acid and citric acid to prevent odor discomfort or respiratory disease when depositing the filter medium for the positive charge, and acetic acid is used to prevent environmental pollution by by-products after coating It is more preferable.

Chitosan dissolved in the solvent is dissolved to a saturated solution in order to minimize economical and environmental pollution, it is advantageous to use diluted with water as needed.

The filter coated with chitosan on the filter media can be used both for the purpose of purifying air or for purifying water because chitosan is insoluble in water. The chitosan used in the present invention is 0.1 to 100% by weight of the filter media. 12% by weight, preferably 0.5 to 10% by weight, more preferably 1.0 to 5.0% by weight. When the amount is less than 0.1% by weight, the amount of positive charges on the surface of the filter medium is small, so that negative charges in water or in air are reduced. It is difficult to easily adsorb and filter the suspended solids or ultra-fine particles, and if it exceeds 12% by weight, it is difficult to provide a positive charge anymore, and fills the air gap of the filter media, which requires more suction power during the filter process. As a result, the chitosan coating process needs to be further increased, resulting in a problem of losing competitiveness.

The polymer coagulant may be used by selecting one or more of polyacrylamide or polyamide, and the polymer coagulant is water-soluble when the filter media is coated to remove suspended substances in water. It is advantageous to remove dust in the air as much as possible because the polymer coagulant is melted and lost at the same time during the suction process to provide a positive charge.

The polymer coagulant used in the present invention can be used except for the anionic one among cationic, nonionic and anionic, and the amount of the polymer coagulant used in the present invention is 0.01 to 2.5 wt% based on 100 wt% of the filter media. It can be used, preferably 0.025 to 1.5% by weight, more preferably 0.05 to 1.0% by weight can be used, most preferably 0.1 to 0.5% by weight can be used, the polymer in the filter media When the flocculant is used at 0.01% by weight or less, the potential of positive charge is low, so ultrafine particles or fine dust in the negatively charged air cannot be easily adsorbed by the potentiometric method, and when used at 2.5% by weight or more, when the coagulant is dissolved in water As the viscosity is greatly increased and formed into a jelly type, it is not only difficult to coat the polymer coagulant on the nonwoven media. The polymer coagulant coated on the filter media reacts with the water contained in the air to swell during the process of filtering ultra fine particles or fine dust in the air (swelling), thereby narrowing the pores of the filter media and thus reducing the air resistance during the suction process. Since it has a disadvantage of receiving a lot of it should be coated with the appropriate concentration of the polymer coagulant.

The adsorbent is not particularly limited except that the adsorption power of environmentally harmful substances contaminated in water or air is not limited, and activated carbon or activated carbon fiber, zeolite, cyclodextrin, silicate, activated alumina, apatite hydroxide, apatite carbonate, il One or more powders or granules selected from calcium phosphate and calcium triphosphate may be used. Water-soluble substances such as cyclodextrin or silicate are not suitable for use as an underwater filter, and are suitable for use as an air filter.

For example, activated carbon or activated carbon fibers may be advantageously used for solvent recovery, odor removal, and gas purification, and zeolite may be advantageously used for humidity control, antibacterial, resin addition, deodorization, and catalyst. In the case of cyclodextrin, it is advantageous to use it as a deodorant to remove odor, silicate is advantageous for removing contaminated impurities and water in the air, and activated alumina is a volatile organic compound using high specific surface activity. Calcium phosphate-based apatite, apatite, calcium monophosphate, and calcium triphosphate are beneficial for the removal of proteins and various infectious diseases such as viruses and automobiles. It is advantageous for adsorption applications such as nitrogen oxide contained in the gas.

The adsorbent has a size of 20 μm to 5 mm, more preferably 50 μm to 2 mm, and most preferably 200 μm to 1 mm, so that the particle size of the adsorbent is 20 If the thickness is less than or equal to a thin filter media like a mask, it is a convenient method for the coating field, and is generally distributed uniformly in the filter media to increase the adsorption power of environmentally harmful substances polluted in the air, but it blocks the pores of the filter media. Due to the large suction load during the suction process, the power consumption is large and shortens the life of the filter equipment such as the air cleaner.When the particle size is 5 mm or more, air permeability during the suction process for the filter is increased. The size of the proposed adsorbent is increased because it has the disadvantage of increasing the filtering and adsorption effect. It is ground is preferred.

The adsorbent may be applied to the filter medium 100% by weight in the range of 0.5 to 40% by weight, preferably 2.5 to 35% by weight, more preferably 5.0 to 25% by weight, most preferably 7.5 to 20% by weight. When used as a%, the coating amount is less than 0.5% by weight has the disadvantage that it can not be used for a long time because the physical adsorption amount of the adsorbent is small, and if the coating amount of the adsorbent is 40% by weight or more has the advantage that can be used for a long time, When applied to a filter medium that requires the same fluidity has the disadvantage of falling off from the filter medium in a short time it is preferable to coat the adsorbent in the amount suggested above.

The silver-based material is not particularly limited except that the killing effect of bacteria or viruses attached to the filter medium in the water or air filter process does not provide environmental pollution and harmfulness to the human body, nano silver, silver nitrate, sulfuric acid Silver, silver hydrofluoric acid, silver chloride, silver oxide, silver azate, silver carrageenan, silver casein, silver-polyacrylic acid complex, silver-polyethylenimine complex, silver-polyhexethylene methylene biguanide complex, silver-polyvinylamine complex, silver- At least one selected from triethanolamine complexes is selected and used, and it is preferable to include 0.001 to 0.2% by weight on the surface of the filter medium, more preferably 0.01 to 0.1% by weight based on 100% by weight of the filter medium. Most preferably, 0.02∼0.05% by weight is included. When the silver-based material is included in the surface of the filter medium at 0.001% by weight (10 ppm) or less, the antibacterial activity is low. When included from the invention as beoteonamyeo, at least 0.1% by weight of silver-based antimicrobial agent that it has a disadvantage of poor cost-competitive because it is very expensive than other antimicrobial agents, it is preferred to coat the antibacterial agent of the proposed silver-based material.

The silver-based material and the adsorbent are attached to the surface of the filter medium by the binder, and the binder does not place any particular limitation, and does not interfere with the filter efficiency and the antimicrobial effect with respect to the silver-based material and the adsorbent during the process of attaching to the filter medium. If not, it can be irrelevant. For example, water-soluble binders include starch, cellulose or derivatives thereof, alginic acid, gelatin, polyvinyl alcohol (PVA), and water-dispersible binders include water-dispersible acrylic resins or derivatives thereof and water-dispersible vinyl acetate resins. Chromman-Indene resin, terpene-based resin, terpene-phenolic resin, aromatic hydrocarbon-modified terpene-based resin, terpene-hydrogenated resin, terpene-phenol-based hydrogenated resin, rosin-based resin, hydrogenated rosin ester-based resin Binders having natural resin-based adhesive properties such as rosin-modified phenolic resins and alkylphenolic resins, alkylphenol-acetylene-based resins, alkylphenol-formaldehyde-based resins, styrene-based resins, aliphatic petroleum resins, and alicyclic petroleum oils. Tackiness of synthetic resins such as resins, copolymerized petroleum resins, aromatic petroleum resins, xylene resins, xylene and formaldehyde resins It is preferable to use it as a binder, such as oligomer-type tackifiers, such as a polybutene and liquid rubber | gum.

The binder is preferably 0.1 to 10% by weight to 100% by weight of the adsorbent, the 0.1% or less has a disadvantage in that the durability is insufficient due to insufficient bonding, if more than 10% by weight blocking phenomenon during the process of attaching to the filter medium Since this has the disadvantage that it occurs, it is preferable to include a binder in the range of the above proposed concentration.

In the conventional filter media structure, the fine particles of suspended matter or ultra-fine particles smaller than the pores of the filter media overcome the problem of not being able to filter at all. In the present invention, a positively charged material is coated on the surface of the filter media and the silver-based material is coated together. Due to the magnetic force, the magnetic powder easily adheres to the magnet, and suspended matter in the water, which is negatively charged, or fine dust particles in the air are easily attached to the positively charged material on the surface of the filter medium by the potentiometric method, and attached to the surface of the filter medium. The bacteria contained in the suspended solids or fine dust can be eradicated by the silver-based substance, thereby overcoming the problem of not being able to filter the suspended solids in the water or the ultra fine particles in the air, which is finer than the conventional filter media pores. A filter that can kill the bacteria contained at the same time To have a big advantage.

Hereinafter, the technical spirit of the present invention will be described in more detail with reference to the following examples, which are obviously not intended to limit the present invention.

Example 1

After measuring 1 g of chitosan purchased from Kumho Hwaseong, acetic acid was completely dissolved in a solvent and diluted to 100 ml to prepare a 1% chitosan solution. Wet the chitosan solution in the filter media and completely dry it in an oven at 100 ^o C, wet the silver nitrate with 1,000 ppm of silver nano prepared using a reducing agent of NaBH ₄ , and then dry it completely in an oven to provide a positive charge while An air filter coated with an antimicrobial agent was prepared while providing a filter having a weight of 100 ppm based on the weight of the filter medium.

A transparent acrylic chamber of 40 cm × 40 cm × 30 cm is installed, and 10 g of carbon black (particle size: 20-25 nm) purchased from Korea Carbon Co., Ltd. is accurately inserted into the chamber using a vibrator. The carbon black particles were scattered, and the antimicrobial-coated filter was suctioned to confirm the efficiency and antimicrobial effect of the air filter.

Example 2

0.1 g of the cationic polymer coagulant purchased from Yiyang Chemical Co., Ltd. was measured and dissolved and diluted with 100 ml of distilled water to prepare a 1% aqueous solution of cationic polymer flocculant. The polymer coagulant solution was soaked in the filter media and completely dried in an oven at 100 ^° C., the silver nitrate solution was soaked to 1,000 ppm as silver (Ag) and completely dried in the oven to provide a positive charge while the silver antibacterial agent was added to the filter media. An air filter having a concentration of 100 ppm was prepared.

A transparent acrylic chamber of 40 cm × 40 cm × 30 cm is installed, and 10 g of carbon black (particle size: 20-25 nm) purchased from Korea Carbon Co., Ltd. is accurately inserted into the chamber using a vibration device. The carbon black particles were scattered, and the antimicrobial-coated filter was suctioned to confirm the efficiency and antimicrobial effect of the air filter.

Example 3

After measuring 1 g of chitosan purchased from Kumho Hwaseong, completely dissolved acetic acid in a solvent and diluting it to 100 ml to prepare a 1% chitosan solution, wet the filter medium, and completely dry it in an oven at 100 ^o C. Coated filter media was prepared.

1 g of triethanolamine was completely dissolved in 100 ml of water, and the resulting filter media was slowly dissolved with stirring. After stirring, 0.37 g of silver nitrate, 1 g of sodium benzoate, and 0.1 g of sodium salicylate were slowly added, followed by stirring for 5 hours. A 1,000 ppm triethanol amine complex was prepared as the contained silver, and the solution was wetted and dried to provide a positive charge, while a silver complex antimicrobial agent prepared a filter that provided 100 ppm (as silver) to the weight of the filter medium. While providing the antimicrobial agent coated air filter was prepared.

A transparent acrylic chamber of 40 cm × 40 cm × 30 cm is installed, and 10 g of carbon black (particle size: 20-25 nm) purchased from Korea Carbon Co., Ltd. is accurately inserted into the chamber using a vibration device. The carbon black particles were scattered, and the antimicrobial-coated filter was suctioned to confirm the efficiency and antimicrobial effect of the air filter.

Example 4

After measuring 2 g of chitosan purchased from Kumho Hwaseong, the acetic acid was completely dissolved in a solvent and diluted to 100 ml to prepare a 2% chitosan solution. The chitosan solution was soaked in the filter media and completely dried in an oven at 100 ^o C, and the silver nitrate was wetted with 1,000 ppm of silver nanoprepared with a reducing agent of NaBH ₄ , followed by complete drying in the oven to provide a positive charge. After preparing a filter that is 250 ppm by weight of the filter medium to provide a positive charge, while producing a water filter coated with an antimicrobial agent, after passing exactly 1 liter of waste water, the efficiency and antimicrobial effect of the water filter was confirmed. The suspended solids in the wastewater carried out in 4 were 165 ppm as a result of the water pollution process test method.

Example 5

In a 250 ml beaker, 2 g of chitosan purchased from Kumho Hwaseong was measured, and acetic acid was completely dissolved in a solvent, and then diluted to 100 ml to prepare a 1% chitosan solution, where 100 ml of silver nano solution at 1,000 ppm concentration and an adsorbent were used. 15 g of activated carbon and 5 g of water-dispersible acrylic resin as a binder are mixed and uniformly mixed, and a mouse mask is deposited therein and dried to prepare a mouse mask coated with an antimicrobial agent while providing a positive charge. The efficiency and deodorization efficiency were confirmed. A total of 17 participants participated in the sensory methods, including 9 males and 8 females. The average age was 34.6 years old.

Comparative Examples 1 to 5

Except for coating a chitosan or polymer coagulant to provide a positive charge and an antimicrobial agent for killing bacteria and viruses was carried out in the same manner as in Examples 1 to 5, the antimicrobial evaluation test was E. coli ATCC 25922 and yellow staphylococcus It was performed according to the shake flask method (Dow corning test method 0923) using Staphylococcus aureus ATCC 6538, the time in which the sample was placed in the flask and cultured bacteria was 24 hours, Comparative Examples 1-4 and Examples 1-4 The results of Table 1 are shown in Table 1, and the results of Comparative Example 5 and Comparative Example 5 are shown in Table 2.

As shown in Table 1 below, by coating the chitosan and the polymer flocculant which can provide a positive charge to the filter medium according to the present invention, it was confirmed that the removal rate of fine dust and suspended solids of the negative charge contaminated in air and water was high. It was confirmed that the potentiometric method can effectively remove the fine particles of suspended matter and ultra-fine particles smaller than the pores of the filter medium, and the suspended matter and fine dust contaminated with bacteria and viruses filtered by the filter medium by the potentiometric method. By confirming that their sterilization efficiency is very good, it was found that they are very effective in providing clean water and air quality.

TABLE 1

division Germ removal rate (%) Floating material removal rate (%) Carbon black removal rate (%) Escherichia coli Staphylococcus Example 1 100 99.9 - 89.5 Example 2 99.8 99.8 - 89.8 Example 3 100 99.9 - 90.3 Example 4 99.9 99.8 94.6 - Comparative Example 1 0 0 - 32.2 Comparative Example 2 0 0 - 29.8 Comparative Example 3 0 0 - 31.7 Comparative Example 4 0 0 44.7 -

      Table 2

division Respiratory process main discomfort Deodorization degree Mask smell Example 5 usually Very good Does not smell Comparative Example 5 usually Low Smell

In addition, by providing positive charge, antimicrobial agent and adsorbent to filter media, it improves adsorption power of suspended solids and fine dust by potentiometric method and provides excellent antibacterial effect, and provides mouse mask with improved adsorption rate of harmful gas contaminated in air. It was confirmed that it can be done.

Figure 1 shows the transmission electron microscope (TEM) results of the nanosilver size and shape of less than 10 nm prepared by the silver nitrate and reducing agent NaBH ₄ in the embodiment.

Claims (6)

In the purification filter for separating fine particles of suspended solids contained in water or ultra-fine particles contaminated in the air, The positive filter material, the silver-based material and the adsorbent are attached to the surface of the filter medium by a binder to provide a purification filter. Thus, suspended matter in the water or fine particles in the air are filtered by contacting the positively charged material by the potentiometric method. Purification filter, characterized in that provided to be sterilized by contact. The method of claim 1, Filter media is one selected from polyethylene naphthalate, polyester, polypropylene, polystyrene, polyethylene, polypropylene, polyvinyl chloride, ethylene vinyl acetate, polyethylene terephthalate, polycarbonate, polybutylene terephthalate, polyacetal and polyamide Purification filter, characterized in that provided by the above material. The method of claim 1, The positive charge material is a purifying filter, characterized in that provided by being selected from chitosan or a polymer flocculant. The method of claim 1, The silver-based material is nano silver, silver nitrate, silver sulfate, silver hydrofluoric acid, silver chloride, silver oxide, silver azate, silver carrageenan, silver casein, silver-polyacrylic acid complex, silver-polyethyleneimine complex, silver-polyheximethylenebiguanidine complex, A purification filter, characterized in that at least one of the polyvinylamine complex and the silver-triethanolamine complex is provided. The method of claim 1, The adsorbent powder is granular or granular in activated carbon powder, activated carbon fiber, zeolite, cyclodextrin, silicate, activated alumina, apatite hydroxide, apatite carbonate, calcium monophosphate and calcium triphosphate, each composed of 20 µm to 5 mm. Purification filter, characterized in that provided is selected. The method of claim 1, The binder is a water-soluble binder of starch, cellulose or a derivative thereof, alginic acid, gelatin, polyvinyl alcohol, a water dispersible acrylic resin or a derivative thereof, a water dispersible vinyl acetate resin, a chromman indene resin, a terpene resin, a terpene phenol Counting paper, aromatic hydrocarbon-modified terpene-based resin, terpene-based hydrogenated resin, terpene-phenol-based hydrogenated resin, rosin-based resin, hydrogenated rosin ester-based resin, rosin-modified phenolic resin, alkylphenol-based resin, alkylphenol ㆍ Acetylene resin, alkylphenol-formaldehyde resin, styrene resin, aliphatic petroleum resin, alicyclic petroleum resin, copolymer petroleum resin, aromatic petroleum resin, xylene resin, xylene / formaldehyde resin, poly Purified filter, characterized in that at least one selected from butenes, liquid rubber.

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