JP2000042569A - Method for working recombination type antibacterial cartridge filter applying antibacterial ceramic, and antibacterial filter and method for inhibition chlorination of antibacterial filter medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make impurities removable by using a resin filter in combination with silver or copper as an antibacterial metal. SOLUTION: An antibacterial filter medium is mixed with a chlorine removing agent (calcium sulfite or magnesium oxide) so as to remove chlorine which is contained in water and deteriorates the antibacterial effect of silver as an antibacterial metal. The filter is obtd. by imparting antibacterial property to a strong ceramic based on alumina or silicon carbide for removing inclusions such as chips of metals and dust. When the filter is applied to diluting water, a magnetic field region having 800-1,000 G magnetic force is ensured in the tubes of a filter layer to attract fine particulate metals and the synergistic effect of far UV and the antibacterial metal (silver or copper) is produced by magnetism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the transfer of silver chloride, which is a problem of an antibacterial metal (silver-based antibacterial material) which is often used in water filters, filters and the like used for filtering water. Water treatment method that suppresses odors, enables long-term use, and maintains stable antibacterial activity.

[0002]

2. Description of the Related Art Hollow fiber filters, resin filters, metallic filters (made of stainless steel), and ceramic filters are used as filters. For the same purpose, a metallic mesh # 70-120 is used to remove contaminants. Removal has taken place.

[0003] A cartridge type in which various types of activated carbon are processed into fibrous shapes and put into a container or container, and a filter such as cellulose or melamine fiber is combined.

[0004] As small water bottles, hollow fiber membranes, multi-layer hollow fibers, and fibers are often used.

[0005] In many cases, calcium sulfite or magnesium oxide used for removing chlorine is used, or various activated carbons (particularly in the form of fine powder) are used by adsorption. Are commercially available.

Various composite materials such as barley stone, silicon, alumina, silicon carbide, natural stone, and activated carbon have been used as filter media.

As the antibacterial material, there are many substances used alone or in combination of silver, copper, magnesium and the like, and most of these antibacterial materials function by being eluted.

[0008] In some cases, a filtration machine (sand, ceramic, filter) is installed in an elevated water tank, and a treatment by circulation filtration or a sterilization treatment by a chlorine injection machine is performed.

Research has been conducted on the use of rainwater and pond water made possible by a combination of filters and the use of titanium oxide for drinking in the event of a disaster.

[0010] There are many types of commercially available water purifiers and equipment described in the above 0001 to 0009, from those attached to taps to those installed for drawing water taps.

The use of magnetism as a filter for diluting water (hereinafter referred to as diluting water) to be used by mixing and using water-soluble cutting oil, coolant, additives, etc., which is used by diluting 90% of the main component into water. Various filters are applied and used in containers.

The dilution water described in 0011 has been subjected to an antibacterial treatment using an ion generator (silver, copper, simple substance or composite).

[0013]

It is mixed with water as a medium,
The cause of the deterioration of the medium itself (water) including the solution used by addition and mixing is the microorganisms contained in the water (mucor, altanaria, Escherichia coli, Staphylococcus aureus,
Pseudomonas, Bacillus, Lactobacillus, Actinomycetes, Legionella, Salmonella, Black mold, Blue mold, Cladoporium, Fusarium, White habit fungi, Candida, Ecchiara, Saccharomyces, Acanthanem, Nichea, Cladomonas, Hetomacox, Euiratoria, The common bacteria such as phordium, ring beer, and cloocox) and fungi proliferate, generating an off-flavor and decomposing water.

[0014] Tap water, which is a tap water, has a significant difference in concentration between flocculants (eg, aluminum sulfate and polyaluminum chloride) and disinfectants (chlorine) mixed by water authorities in various locations depending on the water supply route to each household. It cannot be said that stable sterilization treatment is generally performed, and contaminants are mixed in tap water due to the construction of piping.For example, flocculated floc, activated carbon, synthetic resin products (polyacetal), polypropylene, PVC lining seal for steel pipe, adhesive for hard PVC pipe, seal coat, polyethylene (coating of lining steel pipe), lead plastane, asbestos (asbestos), rock wool (rock wool), hemp fiber, pipe rust, scale, And the like to suppress or eliminate these.

The disinfectant (chlorine) contained in tap water constitutes trihalomethane (chloroform, dibromochloromethane, bromodichloromethane, bromoform) which is considered to have an effect on the human body.

There are microorganisms, protozoa (such as Cryptosporidium), spores and the like that cannot be treated with the current fungicide (chlorine).

Many of high water tanks used for water supply facilities including middle- and high-rise apartments are made of FRP (glass fiber reinforced plastic), and many of which have good conditions for the propagation of microorganisms. These include the incorporation of foreign matter such as dust and the propagation of microorganisms due to an increase in water temperature. Examples of such cases include the occurrence of microbial coatings and protozoa that form a film, granule, or bun on the inner wall surface.

Many of these microorganisms are chlorine-resistant, and include cyanobacteria such as oshiratoria, formimidium, ring beer, cloocox, diatoms Acantantes, nittaia, green algae urosurix, gloeocystis, bacteria, fungi and protozoa. And so on.

A device that eliminates dust and foreign matters and performs antibacterial treatment other than chlorine by using a structure that makes it possible to use rainwater or the like as drinking water when a disaster occurs.

Selection of the most preferable combination of antibacterial metals among copper, silver, zinc, tin, lead, manganese, magnesium, aluminum, titanium and the like.

In recent years, antibacterial metal titanium, which has attracted attention, is a component (nitric acid) generated by a mechanism of decomposing oxygen dioxide in water, which has a high solvent property and impairs ionic metal components contained in other moisture. .

Silver nitrate, which is often used as a method for processing antibacterial metals, dissolves easily and at the same time heat treatment (about 80 ° C. to 600 ° C.) of activated carbon, an inorganic substance used as a medium, causes the residue deposited on the substance to remain. Others are spilled and contribute to water pollution.

Silver, which is an antibacterial metal used in many antibacterial filter materials, elutes silver and has an antibacterial action, but its antibacterial properties are deteriorated by salts and ultraviolet rays contained in water.

Steel pipes (made of iron) often used for water pipes are:
The nitric acid promotes the corrosion of the metal and turns into bivalent and trivalent iron, which is a source of iron bacteria and one of the causes of settlement.

[0025] The filter media, such as barley stone, silicon carbide, silica stone, and activated carbon, which are often used for water filtration, disperse the propagated microorganisms in a wide area when the microorganisms proliferate and flow in dead water or in a stopped state.

Measures to suppress or prevent deterioration, offensive odor, and decay due to propagation of microorganisms generated in dilution water.

The use of the dilution water for a long period of time and cost reduction are intended to reduce and eliminate impurities (metals, dust, foreign matter, and falling bacteria after polishing, which fall off during polishing and cutting work) which are mixed in during the work.

Many of the impurities in the dilution water are removed by the sedimentation layer and magnetic force, and fine particles are suspended and exist. These are discharged to the polishing work site and contribute to causing a scar on the product.

[0029]

The antibacterial ceramic includes:
Use a combination of antibacterial metals silver and copper as the best essential metals. These antibacterial ceramics
Patent No. 8-330154 (publication) is used to improve the antibacterial activity, durability and abrasion resistance, and to further reduce the filling amount.

Many of the antibacterial materials are due to elution of a large amount of metal ions, and when diluting water is used for a long period of time, it binds to other ions present in the diluting water and loses antibacterial activity. Published), Patent Application No. 9-243318
The antibacterial material described in No. (not disclosed) can be used for a long period of time because it has little elution and maintains stable antibacterial activity.

As an antibacterial material (antibacterial filter material) for tap water, those produced by a production method described in Japanese Patent Application No. 9-243318 (not disclosed) are preferable, and these have far-infrared emissivity. 95%, especially 3μ, 6μ, 9
A material having an OH group which has a high generation of electromagnetic waves and a good hydrophilic property is used.

The shape of the antibacterial material is preferably a pellet (column) or a circular shape, preferably 2 mm to 15 mm, more preferably 3 mm to 8 mm.

As an application method of an antibacterial ceramic for processing a filter, abrasive particles used in an antibacterial whetstone described in Japanese Patent Application No. 9-59752 (not disclosed) are # 26 to # 220. Use carefully selected and processed into a cylindrical shape.

As a countermeasure against chlorine contained in water that degrades the antibacterial action of silver, which is an antibacterial metal used in many antibacterial filter media, a chlorine remover (calcium sulfite, magnesium oxide) is used in combination.

The above-mentioned filter is preferably a filter which has a high strength in order to discharge contaminants such as metal pieces and dust, and which has antibacterial properties to a ceramic mainly composed of alumina and silicon carbide.

The activated carbon filters were carefully selected based on the test results described in the practical examples, based on the flow rate, the durability, and the difference in the antibacterial material.

When used as dilution water, a magnetic material having a magnetic force of 800 to 1000 Gauss is secured to a magnetic field region on the outer periphery of the inside of the tube of the filtration layer to adsorb fine metal particles, thereby far-infrared effect and antibacterial effect by magnetism. Metals (silver, copper)
A layer effect occurs.

[0038]

BEST MODE FOR CARRYING OUT THE INVENTION

[Practical example 1] The structure of FIG. 1 was processed using a SUS304 nominal 90 tube having a thickness of 2 mm. Resin filter (cellulose fiber) pore size 5μ for primary filter layer 3kg of antibacterial ceramic 5mm ball for antibacterial filter layer Patent Application No. 9-243318 (not disclosed) Activated carbon filter type fine powder 350g for secondary filter layer Installed in Result Deleted trivalent iron granules etc. in water supply pipes. Waterworks Law Water Quality Inspection Methods 11 items Below standard value

[0039]

[Practical example 2] The structure shown in Fig. 1 was processed using a SUS304 nominal 90 tube having a thickness of 2 mm. Resin filter (made of cellulose fiber) pore size 5μ for primary filtration layer Antibacterial ceramic 5mm ball 3kg for antibacterial filtration layer Patent application No. 9-243318 (not disclosed) Activated carbon filter type one for secondary filter layer Install. Target Water supply law Water quality inspection method 11 items Above standard value Beverage incompatibility Result Deleted trivalent iron granules etc. in water supply pipes Water supply law Water quality inspection method 11 items Below standard value

[0040]

[Practical Example 3] The structure shown in FIG. 1 was processed using a SUS304 nominal 90 tube having a thickness of 2 mm. Resin filter (made of cellulose fiber) for primary filtration layer 5μ pore size 100g calcium sulfite 100g for antibacterial filtration layer 3kg of antibacterial ceramic 5mm ball Patent application No. 9-243318 (unpublished) One for fibrous activated carbon filter type for secondary filter layer And place it in the well water. Target Water supply law Water quality inspection method 11 items Above standard value Drinking nonconformity Result Water supply law Water quality inspection method 11 items Below standard value

[0041]

[Practical example 4] Antibacterial filtration material (antibacterial ceramic) A pump with a circulation rate of 30 L / min is connected and filled with antibacterial ceramic. Antibacterial ceramic 1000g Target Water General bacteria 10 ⁶ Escherichia coli 10 ³ Determination method General bacteria (BHI medium) Escherichia coli (DHL medium) Water Water is pumped from 30L container 1 to container 2 Result No general bacteria detected. E. coli Not detected.

[0042]

[Practical example 5] Antibacterial filter (antibacterial ceramic filter) An antibacterial ceramic filter is installed in a pump having a circulation rate of 30 L / _min . Antibacterial ceramic filter 750 g Target water General bacteria 10 ⁶ Escherichia coli 10 ³ Determination method General bacteria (BHI medium) Escherichia coli (DHL medium) Water Pumped water from container 1 of 30 L to container 2 Result No bacteria detected. E. coli Not detected.

[0043]

[Practical example 6] Target rainwater 30L Test method Primary filter (manufactured by F) PP 5μ Filter material Antibacterial ceramic 3kg Secondary filter One fibrous activated carbon Connect a pump with a circulation rate of 15L / min From water 30L container 1 to pump Water to container 2 Initial value General bacteria 10 ⁷ Escherichia coli 10 ⁵ Result No general bacteria detected. E. coli Not detected.

[0044]

[Practical example 7] Elevated water tank (FRP) Water holding capacity 1500L Circulation pump 75 / _min Test method Primary filter (manufactured by F) PP 5μ Filter material Antibacterial ceramic 3kg Secondary filter Fibrous activated carbon 1 piece Initial value General bacteria 10 ⁴ 1 Water test results after time No general bacteria detected.

[0045]

[Practical example 8] Combination of commercially available housing and filter Example Primary filter Housing made by Company F Housing made by Company F Filter PPC Antibacterial filtration layer Housing made by Company K Home made two kinds of Ixelmetal B and C Made by Company Y Housing Y company's fibrous activated carbon filter Chlorine remover Calcium sulfite, magnesium oxide Combination of primary filter + antibacterial filtration layer + secondary filter Combination of primary filter + dechlorinator + antibacterial filtration layer + secondary filter Water supply use Odor, taste, good General bacteria, Escherichia coli Not detected Residual chlorine 0.01 PPM or less Odor, taste, good General bacteria, Escherichia coli Not detected Residual chlorine 0.01 PPM or less When using rainwater Odor, taste, good General bacteria, E. coli Not detected Odor, taste, good General bacteria, E. coli Not detected When rainwater is used (injection of sodium hypochlorite 0.02PPM or less) Odor, taste, good General bacteria, Escherichia coli No detection Odor, taste, good General bacteria, Escherichia coli No detection Antibacterial test for the above water supply and rainwater Was done. Has better antibacterial properties and sustained antibacterial activity. Commercial products such as these housings (containers) and filters are produced by various manufacturers and can be applied.

[0046]

[Practical Example 9] The structure shown in FIG. 6 was processed using a SUS304 nominal 90 tube having a thickness of 2 mm. Antibacterial ceramic filter for primary filtration layer and antibacterial filtration layer
Abrasive # 26 Tests two types of Japanese Patent Application No. 8-330154 (published) Patent Application No. 9-243318 (unpublished) for secondary filter layer Water-soluble cutting oil Water 95% Water Cutting oil 5% 20L
Circulating amount 35 / _min Determination method General bacteria (BHI medium) Initial value General bacteria 10 ⁷ 5 minutes later General bacteria 10 ³ 60 minutes later General bacteria Not detected.

[0047]

[Practical Example 9] The structure shown in FIG. 6 was processed using a SUS304 nominal 90 tube having a thickness of 2 mm. Aichi (T Carbon Co.) Antibacterial ceramic filter for primary filtration layer
Abrasive # 26 Tests two types of Japanese Patent Application No. 8-330154 (public) No. 9-243318 (unpublished) for secondary filter layer Determination of 20 / L of lignin diluent Circulating volume 35 / _min Determination method General bacteria ( (BHI medium) Initial value General bacteria 10 ⁶ 5 minutes later General bacteria 10 ³ 60 minutes later General bacteria Not detected.

[0048]

The primary filter attached to the water inlet side of the water tank having the structure shown in FIG. 1 removes foreign substances and other impurities (described in 0014 and 0015). 1
The primary filter used in the secondary filtration layer has a pore size of up to 5 μm. As the chlorine removing agent, two types of calcium sulfite and magnesium oxide, which are widely used in the food industry, can be used.

The purpose of use of this chlorine removing agent is to suppress the transfer of the antibacterial metal and silver used in the antibacterial filter material (antibacterial ceramic) filled in the rear part to silver chloride and obtain a stable antibacterial activity. Therefore, the antibacterial action by contact is maintained and the effect on microorganisms described in 0013, 0016, 0018 can be obtained for a long time.

By reducing the load on the adsorptivity of the activated carbon, long-term retention is enabled, and the treatment is carried out when trouble (elution) occurs in the antibacterial filter material for some reason.

Microbes (film, granules, buns) are generated when the filter material is barley stone, silicon carbide, silica stone, or activated carbon alone or in combination, and at the same time, microorganisms proliferate in the water-stop state. Is Japanese Patent Application No. 8-330154.
(Disclosed), Patent Application No. 9-243318 (not disclosed) An antibacterial filter material (antibacterial ceramic) is a porous surface member that performs an antibacterial treatment by contact.

When the container is filled and used in the method of filling activated carbon, a passage is generated at the time of flowing water so that water is passed without contacting the entire activated carbon, and the activated carbon is rubbed and flows out. Therefore, it is possible to obtain a stable effect of activated carbon by using a cartridge type from the viewpoint of surface area, pressure loss, and the like.

A primary filter is installed on the water inlet side, and a chlorine removing agent (calcium sulfite or magnesium oxide) is filled in the antibacterial filter layer.
54 (public) or Japanese Patent Application No. 9-243318)
Antibacterial filter media (antibacterial ceramic) is charged and activated carbon (fine powder, granules, etc. or filtered) is passed through in order to remove or suppress foreign substances, chlorine and microorganisms contained in waterworks. And stable drinking of water becomes possible.

The same applies to drinking water in an elevated water tank.
It is also possible to use the circulation method by taking measures described in 13, 0016, 0018.

Microorganisms generated in the water-soluble cutting oil in the dilution water are caused by decay and offensive odor and are caused by general bacteria, and mainly aerobic bacteria use oxygen.
The knitting anaerobic bacteria proliferate, produce organic acids, lower the hydrogen ion concentration (pH), and the organic acid is used to grow the hydrophobic reducing bacteria, so that the oil agent has a black color. The assembled apparatus shown in FIG. 6 was installed in the water-soluble cutting oil in the dilution water to suppress the occurrence of the above-described process, and the inspection results described in the practical examples were obtained.

The antibacterial activity of the antibacterial filter material is proportional to the filling amount and depends on the surface area. The filter shown in FIG. 6 is the antibacterial filter described in 0033. This antibacterial filter eliminates impurities and retains antibacterial activity.

This antibacterial activity is determined by the Kg of the antibacterial filter medium.
Larger than the middle surface area and small in space volume, it has improved contact with water supply, well water, rainwater, pond water, and dilution water, and maintains stable antibacterial activity.

The installation method using the antibacterial filter is shown in FIG. 1 as a primary filtration layer on the water inlet side, and in FIG. It is also preferable to use well water, rainwater, pond water, and dilution water.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a primary filter installed on a primary filtration layer (F), in which a liquid entered from a socket (B) of a blind flange (C) showing the shape of an antibacterial filter tube is placed. According to (L) 5
Foreign matter having a size of 0 μm or more is removed, and water is fed to the antibacterial filtration layer (H) to prevent backflow of the antibacterial filtration material using a resin strainer (N). In the primary filter (L), a filter fixing partition (described in FIG. 2) is fixed between two Teflon packings at the joint (G). The inspection is performed by opening the blind plug of the socket of the inspection port (I) attached to the antibacterial filtration layer (H). It is divided by a partition plate (J) installed between the antibacterial filtration layer (H) and the secondary filter layer (K). The secondary filter layer (K) is fixed to the socket (B) of the blind flange (C) mounted opposite the water inlet side using an activated carbon filter (M). The flange (E) of this tube and the blind flange (C) are connected by bolts. FIG. 2 shows a shape divided into two. Joining part (G)
Are cut off and show the primary filter (L), the filter fixing plate (T), and the resin strainer (N). FIG. 3 is a shape and assembly drawing. Resin strainer (N) which shows the size of the basic type of blind flange (C) and is attached to blind flange (C) on the water inlet side, and activated carbon filter (N) attached to blind flange (C) on the water supply side M) is described. This mounting method is as follows: from the socket (B) of the blind flange (C) to the filter lower fixing plate (S), Teflon packing (R), activated carbon filter (M), Teflon packing (R), filter upper fixing plate (Q) , And fix it with the filter fixing nut (P) of the filter fixing bolt (O). FIG. 4 is a filter fixing partition plate (T) described in FIG.
It is a shape and assembly drawing of FIG. Filter fixed partition plate (T)
It describes the shape and mounting method. This mounting method is as follows: from the socket (B) of the blind flange (C), to the filter lower fixing plate (S), Teflon packing (R), filter (L), Teflon packing (R), filter upper fixing plate (Q), And fix it with the nut (P) of the fixing bolt (O). Also, filter fixing plate (T)
A resin strainer (N) is attached to the other side of the socket (B). FIG. 5 is an enlarged view of the part (J) attached between the antibacterial filtration layer (H) and the secondary filter described in FIGS. This is a fixed partition using a punching metal or a wire mesh (V) that does not impair water permeability with a metal fitting (W) requiring a width of 10 mm or more for the purpose of fixing and reinforcing in contact with the outside week. FIG. 6 shows an assembling method in the case of using diluting water other than tap water. Vertical installation 1
The next filter layer (F) is filled with an antibacterial filter, and the magnetic film described in 0038 is placed in a columnar shape. A filter is installed on the antibacterial filtration layer (H). The secondary filter layer (K) is used as an auxiliary layer, and the partition plate (J) is used for dust removal, and water enters from the K side.

[Description of Signs] B Socket C Blind Flange D
Bolt hole for fixing E Flange F Primary filtration layer G
Joint H Antibacterial filtration layer I Inspection port J
Partition plate K Secondary filter layer L Primary filter M
Activated carbon filter N Resin strainer O Filter fixing bolt P Filter fixing nut Q Filter upper fixing plate R Teflon packing S Filter lower fixing plate T Filter fixing partition plate U Antibacterial ceramic filter V Punching metal W Metal fitting

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/50 540 C02F 1/50 540E 550 550B 560 560C 1/58 1/58 L 1/70 1/70 Z F term (reference) 4D038 AA01 AA02 AA04 AA05 AA08 AB07 AB39 BA04 BB06 BB12 BB15 BB17 4D050 AA01 AA02 AA04 AA08 AA13 AB06 AB19 BA20 BD06 CA06 CA12 CA15

Claims (6)

[Claims] 1. An antibacterial metal such as silicon, silica sand, activated carbon, alumina, zirconia, titanium or the like, whose main component is silver or copper, coated or sintered and processed into a cylindrical or plate-shaped filter. How to use antibacterial filter. 2. An antibacterial filter obtained by coating or sintering silver or copper, which is an antibacterial metal, on a cylindrical or plate-shaped filter mainly composed of silicon, silica sand, activated carbon, alumina, zirconia, titanium or the like. How to use antibacterial filter reworked. 3. A method of manufacturing, processing and using a replaceable type, a replaceable type, and a cartridge type having the structure shown in FIGS. 4. A mixed use according to claim 0053. 5. A method for producing, processing and using a commercially available water purifier or filter as described in Practical Example 8. 6. Use of a simple substance of silver, which is an antibacterial metal, or a composite of an antibacterial substance forming a composite and calcium hypochlorite and magnesium oxide as chlorine removing agents (dechlorinating agents).