CN109081405B - High-efficient antibacterial purifier - Google Patents
High-efficient antibacterial purifier Download PDFInfo
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- CN109081405B CN109081405B CN201811088474.0A CN201811088474A CN109081405B CN 109081405 B CN109081405 B CN 109081405B CN 201811088474 A CN201811088474 A CN 201811088474A CN 109081405 B CN109081405 B CN 109081405B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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Abstract
The invention discloses a high-efficiency bacteriostatic water purifying device which comprises a shell made of a plastic material, wherein a partition plate is formed in the shell by injection molding, the interior of the shell is divided into a water inlet cavity and a water outlet cavity by the partition plate, a water inlet pipe corresponding to the water inlet cavity and a water outlet pipe corresponding to the water outlet cavity are formed in the shell by injection molding, a filter element protecting pipe is formed at the upper end of the shell by injection molding, a boss is formed between the outer side of the filter element protecting pipe and the shell, a bacteriostatic filter element is downwards inserted at the outer side position of the boss, a first cavity is formed between the bacteriostatic filter element and the filter element protecting pipe, a detachable first shell is connected with the upper end of the shell in a threaded manner, and a second cavity is formed between the first shell and the bacteriostatic filter element; this device can effectively realize quality of water purification to it is comparatively convenient to dock, can not make mistakes.
Description
Technical Field
The invention belongs to a separation device, and particularly relates to a high-efficiency bacteriostatic water purification device.
Background
With the development of economy, the living standard of people is continuously improved, the requirement of people on domestic water is higher and higher, and how to safely use water and healthy water becomes a problem concerned by the masses.
However, most of the conventional water purification filter elements only adsorb residual chlorine and heavy metals in water to reduce odor, but do not necessarily adsorb organic impurities and microorganisms in water. The most common filter element in the market is activated carbon, but the adsorption capacity of the activated carbon to organic matters is limited, once the content of the organic matters in water is higher, the adsorption effect is greatly reduced, the activated carbon is more helpless to microorganisms, and bacteria harmful to human bodies are difficult to kill in the water purification process.
Research has shown that the most common organic pollutants in water are volatile organic compounds, mostly released into the air during production from chemical plants and power plants, and then re-deposited in domestic water, which are very difficult to prevent and remove. In view of this class of contaminants, scientists have studied a series of approaches, such as Photolytical degradation of nonylphenol by immobilized TiO2in dual layer hollow fibre membranes.(Chem.Eng.J.2015,269,255-261.) a photocatalytic method was used to remove volatile organic compounds, but this method is not suitable for use in water purification cartridges because light is required to catalytically decompose organic contaminants.
Meanwhile, Silver Nanoparticles are mostly used as bactericide in The prior art for killing bacteria in water, however, according to The Neglilble Particle-Specific susceptibility Mechanism of Silver nanoparticies, The roll of Ag+Ion Release in the Cytosol (biomedicine Nanotechnology, biol. Med.2015,11(3), 731-739.) reports that silver nanoparticles are aggregated in practical application, thereby causing the antibacterial efficiency to be reduced, and silver ions have potential biological toxicity.
In order to overcome the problems, the high-efficiency bacteriostatic water purification filter element provided by the invention adopts silicon carbide material as a main filter element, the material has larger surface area and high adsorption capacity, and after the surface of the filter element is attached with metal material with catalytic action, the filter element has the capacity of decomposing organic matters in water. The sponge attached with silver ions is used as a bacteriostatic material in order to improve bacteriostatic effect, the bacteriostatic material is used for effectively solving the problem of silver ion aggregation, and the silver ions in the bacteriostatic material are firmly adsorbed, so that the silver ions are prevented from entering water to cause harm to human bodies.
Disclosure of Invention
The invention relates to a high-efficiency bacteriostatic water purification filter element, belonging to the field of separation devices. The filter element consists of a circular tube-shaped shell, an antibacterial filter element, a filter element protection tube, a water inlet and a water outlet. The filter element provided by the invention not only can adsorb conventional pollutants, but also can catalyze and decompose organic pollutants, and has a bacteriostatic effect.
The purpose of the invention is realized by the following technical scheme:
a high-efficiency bacteriostatic water purifying device comprises a shell made of a plastic material, wherein a partition plate is formed in the shell by injection molding, the inside of the shell is divided into a water inlet cavity and a water outlet cavity by the partition plate, a water inlet pipe corresponding to the water inlet cavity and a water outlet pipe corresponding to the water outlet cavity are formed in the shell by injection molding, a filter element protecting pipe is formed in the upper end of the shell by injection molding, a boss is formed between the outer side of the filter element protecting pipe and the shell, a bacteriostatic filter element is downwards inserted in the outer side position of the boss, a first cavity is formed between the bacteriostatic filter element and the filter element protecting pipe, a first shell which is detachable is in threaded connection with the upper end of the shell, a second cavity is formed between the first shell and the bacteriostatic filter element, and a first through hole communicated with the second cavity and the water outlet cavity is formed in the top of the shell, the top of casing is provided with the intercommunication the filter core protection tube with the second through-hole of intake antrum, water enters into to the intracavity of intaking from the inlet tube, then passes behind the second through-hole and enters into in the filter core protection tube, the outer wall department equipartition of filter core protection tube has the hole of permeating water of outside play water usefulness, the aperture of the hole of permeating water is 1mm ~ 2mm first cavity intussuseption is filled with silver ion sponge the second cavity intussuseption is filled with the active carbon granule.
Preferably, a rubber sealing ring is arranged at the position where the boss contacts with the bacteriostatic filter element.
Preferably, a pressing rubber sleeve is fixed on the inner top of the first shell by supporting and gluing, and the lower end face of the pressing rubber sleeve acts on the top of the bacteriostatic filter element.
Preferably, the outer wall of the pressing rubber sleeve is provided with an annular groove for facilitating the compression of the pressing rubber sleeve.
Preferably, the first shell is made of transparent acrylic materials.
Preferably, the bacteriostatic filter element is a metal oxide/silicon carbide filter element or a platinum/metal oxide/silicon carbide filter element.
Preferably, the preparation steps of the metal oxide/silicon carbide filter element are as follows:
(1) soaking the silicon carbide filter element in ethanol for 30-60 minutes, taking out and drying, immersing in a metal colloid solution for 0.5-4 hours, taking out and drying, and calcining at 400-600 ℃ for 0.5-3 hours to obtain the metal oxide/silicon carbide filter element.
Preferably, the platinum/metal oxide/silicon carbide filter element is prepared by the following steps:
(1) soaking the silicon carbide filter element in ethanol for 30-60 minutes, taking out and drying, immersing the silicon carbide filter element in a metal salt colloidal solution for 0.5-4 hours, taking out and drying, and calcining at the temperature of 400-;
(2) placing the metal oxide/silicon carbide filter element into a suction flask, adding a platinum chloride aqueous solution to ensure that the metal oxide/silicon carbide filter element is completely immersed, degassing for 0.5-3 hours, taking out and drying, and calcining for 0.5-3 hours at the temperature of 400-600 ℃ to obtain the platinum/metal oxide/silicon carbide filter element;
the preparation method of the platinum chloride aqueous solution comprises the following steps:
preparing a chloroplatinic acid hexahydrate aqueous solution with the concentration of 1.0-1.5g/L, and adjusting the pH value of the solution to 7.0-8.0 by using 0.5-1.0mol/L ammonia water to obtain the chloroplatinic acid hexahydrate aqueous solution.
Preferably, the preparation method of the metal colloid solution is as follows:
preparing a 2-methoxy ethanol solution of 1.0-2.0mol/L metal acetate, adding ethanolamine with the same molar weight as the metal acetate, and stirring at 50-80 ℃ for 0.5-3 hours to obtain the compound;
the metal acetate is any one of cobalt acetate, calcium acetate, zirconium acetate and cerium acetate.
Preferably, the filter element protection pipe is a support coated with metal oxide on the surface;
the metal oxide is any one or a mixture of any more of titanium dioxide, copper oxide and manganese dioxide in any proportion;
the support is hydrotalcite or sepiolite.
Preferably, the preparation method of the filter element protection tube is as follows:
soaking the support in acetone at room temperature for 3-10 min, drying with nitrogen for 5-10 min, loading onto pulsed laser deposition equipment, and depositing metal oxide on the support to obtain the filter element protection tube;
the deposition thickness was set to 5-20 nm.
Preferably, the preparation method of the silver ion sponge comprises the following steps:
(1) dissolving silver nitrate in a solvent to prepare a silver nitrate solution with the concentration of 0.05-2.00mg/mL, wherein the solvent is tetrahydrofuran: the volume ratio of the plant extract is 10 (0-5);
the plant extract is water extract of myrtle fruits or pomegranate fruits;
(2) cutting sponge into 1-5cm3Soaking in silver nitrate solution after size reduction, shaking for 1-7 days, taking out, washing with distilled water for 3-5 times, and drying at 30-50 deg.C for 12-24 hr to obtain silver ion sponge.
Preferably, the preparation method of the silver ion sponge comprises the following steps:
(1) dissolving silver nitrate in a solvent to prepare a silver nitrate solution with the concentration of 0.05-2.00mg/mL, wherein the solvent is tetrahydrofuran: the volume ratio of the plant extract is 10 (1-5);
the plant extract is water extract of myrtle fruits or pomegranate fruits;
(2) cutting sponge into 1-5cm3Soaking in silver nitrate solution after size reduction, shaking for 1-7 days, taking out, washing with distilled water for 3-5 times, and drying at 30-50 deg.C for 12-24 hr to obtain silver ion sponge.
Preferably, the sponge is melamine foam or polyurethane sponge.
The preparation method of the aqueous extract of the myrtle fruit or the pomegranate fruit comprises the following steps:
cleaning fresh mature fruits of myrtle or pomegranate, crushing for 20 minutes by using a crusher to obtain pulp, adding the pulp into water with the mass 2 times that of the pulp, heating to 40 ℃, preserving the heat at 40 ℃ for 50 minutes, and filtering by using 200-mesh gauze to obtain filtrate, namely the water extract of the myrtle fruits or the water extract of the pomegranate fruits.
The invention has the beneficial effects that: only have an inlet tube and an outlet pipe in this product, be difficult for makeing mistakes during the butt joint to this product can disinfect through the silver ion sponge when realizing water purification, can reduce breeding of bacterium through antibacterial filter core, utilizes the active carbon granule can improve quality of water, and antibacterial filter core's micropore aperture is minimum, and the particulate matter can't pass, in antibacterial, can also filter the particulate matter, the simple structure of this device, low cost is fit for using widely.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view of the interior of the sponge and activated carbon particles for removing silver ions in the present invention;
FIG. 3 is a cross-sectional view taken at A-A of the present invention;
fig. 4 is an enlarged view of the present invention at B.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Specifically, the raw materials or instrument sources used in the following examples and comparative examples are as follows:
silicon carbide filter elements, purchased from the institute of metals, department of sciences.
Chloroplatinic acid hexahydrate, CAS No.: 18497-13-7.
2-methoxyethanol, CAS No.: 109-86-4.
Calcium acetate, CAS No.: 5743-26-0.
Titanium dioxide, CAS No.: 13463-67-7.
Manganese dioxide, CAS No.: 1313-13-9.
Silver nitrate, CAS number: 7761-88-8.
The reagents were purchased from Shanghai Aladdin Biotechnology Ltd.
Ammonia, CAS No.: 1336-21-6, concentration 25%.
Acetone, CAS No.: 67-64-1.
Ethanol, CAS No.: 64-17-5.
Tetrahydrofuran, CAS No.: 109-99-9.
The above reagents are all available from the national pharmaceutical group chemical reagents, ltd.
Sepiolite was purchased from processing plants for Tianlong mineral products from Lingshou county.
Melamine foam, available from Shanghai Binxin, Inc.
The activated carbon was coconut shell activated carbon purchased from Liyang Sanniu activated carbon Co.
The pulsed laser deposition apparatus was a comp pro201 pulsed laser deposition apparatus manufactured by Coherent corporation of america.
The myrtle fruit is mature fruit of myrtle belonging to Myrtaceae and Myrtle genus, and Latin is named Rhodomyrtus tomentosa.
Example 1
As shown in fig. 1 to 4, a high-efficiency bacteriostatic water purifying device comprises a casing 1 made of plastic, a partition plate 2 is formed inside the casing 1 by injection molding, the inside of the casing 1 is divided into a water inlet cavity 201 and a water outlet cavity 202 by the partition plate 2, a water inlet pipe 111 corresponding to the water inlet cavity 201 and a water outlet pipe 112 corresponding to the water outlet cavity 202 are formed outside the casing 1 by injection molding, a filter element protecting pipe 3 is formed at the upper end of the casing 1 by injection molding, a boss 301 is formed between the outer side of the filter element protecting pipe 3 and the casing 1, a bacteriostatic filter element 4 is inserted downwards at the outer side position of the boss 301, a first cavity 5 is formed between the bacteriostatic filter element 4 and the filter element protecting pipe 3, a detachable first shell 6 is connected to the upper end of the bacteriostatic casing 1 by screw threads, a second cavity 7 is formed between the first shell 6 and the filter element 4, the top of casing 1 is provided with the intercommunication second chamber 7 and the first through-hole 8 that goes out water cavity 202 the top of casing 1 is provided with the intercommunication filter core protection tube 3 with the second through-hole 9 of intake antrum 201, water enters into to intake antrum 201 from inlet tube 111, then passes behind the second through-hole 9 and enters into to in the filter core protection tube 3, the outer wall department equipartition of filter core protection tube 3 has the hole 331 of permeating water of outside play water usefulness, the aperture of the hole 331 of permeating water is 2mm first chamber 5 intussuseption is filled with silver ion sponge 555 the intussuseption of second chamber 7 is filled with activated carbon particle 777.
And a sealing ring 333 made of rubber is arranged at the position where the boss 301 is contacted with the bacteriostatic filter element.
A pressing rubber sleeve 666 is fixed on the inner top of the first shell 6 for supporting gluing, and the lower end face of the pressing rubber sleeve 666 acts on the top of the bacteriostatic filter element 4.
The outer wall department of suppression gum cover 666 is provided with an annular groove 667 of being convenient for its compression, utilizes the annular groove 667 to be convenient for the compression of suppression gum cover, the bacteriostatic filter core of below can be better withstood after the compression.
The first shell 6 is made of transparent acrylic material.
Example 2
A high-efficiency bacteriostatic water purifying device has the same structure as that of embodiment 1, wherein 1g of silver ion sponge is arranged in a first chamber 5, and 3g of activated carbon particles are filled in a second chamber 7;
the bacteriostatic filter element 4 and the filter element protection tube 3 are both hollow cylinders, wherein the inner diameter of the filter element protection tube 3 is 16mm, the outer diameter is 40mm, and the height is 80 mm; the inner diameter of the bacteriostatic filter element 4 is 50mm, the outer diameter is 72mm, and the height is 100 mm;
100 water permeable holes are uniformly distributed on the outer wall of the filter element protection tube 3, and the aperture of each water permeable hole is 2 mm;
the inner diameter of the first shell 6 is 100mm, the outer diameter is 104mm, and the height is 120 mm;
the bacteriostatic filter element 4 is a calcium oxide/silicon carbide filter element;
the preparation steps of the calcium oxide/silicon carbide filter element are as follows:
(1) soaking the silicon carbide filter element in ethanol for 30 minutes, taking out, naturally drying to constant weight, immersing in a calcium acetate colloidal solution for 2 hours, taking out, drying at 60 ℃ for 48 hours, and calcining at 600 ℃ for 2 hours to obtain a calcium oxide/silicon carbide filter element;
the preparation method of the calcium acetate colloidal solution comprises the following steps:
preparing a 2-methoxy ethanol solution of 1.0mol/L calcium acetate, adding ethanolamine with the same molar weight as the calcium acetate, and stirring at 70 ℃ for 2 hours at 250r/min to obtain the calcium acetate-calcium acetate suspension;
the filter element protection pipe 3 is sepiolite the surface of which is coated with titanium dioxide;
the preparation method of the filter element protection tube 3 comprises the following steps:
soaking sepiolite in acetone at room temperature for 5 minutes, drying with nitrogen for 10 minutes, loading onto pulsed laser deposition equipment, and depositing titanium dioxide on a support to obtain a filter element protection tube;
the deposition thickness of titanium dioxide is set to 10 nm;
the parameters of the pulsed laser deposition equipment are as follows:
the oxygen pressure was 1.33Pa, the pulse energy was 60mJ, the pulse count was 7500, and the pulse laser wavelength was 248 nm.
The first shell 6 is made of transparent acrylic material.
The preparation method of the silver ion sponge 555 comprises the following steps:
(1) preparing a silver nitrate solution with the concentration of 1.30mg/mL, wherein a solvent is tetrahydrofuran;
(2) cutting melamine foam into pieces with the volume of 3cm multiplied by 1cm, soaking the pieces in the silver nitrate solution with the volume of 5 times, oscillating for 7 days at the rotating speed of 40r/min, taking out the pieces, washing the pieces for 3 times by using distilled water, wherein the using amount of the distilled water of each washing is the same as the volume of the silver nitrate solution, and drying the pieces for 24 hours at the temperature of 30 ℃ to obtain the silver ion sponge.
Example 3
A high-efficiency bacteriostatic water purifying device has the same structure as that of embodiment 1, wherein 1g of silver ion sponge is arranged in a first chamber 5, and 3g of activated carbon particles are filled in a second chamber 7;
the bacteriostatic filter element 4 and the filter element protection tube 3 are both hollow cylinders, wherein the inner diameter of the filter element protection tube 3 is 16mm, the outer diameter is 40mm, and the height is 80 mm; the inner diameter of the bacteriostatic filter element 4 is 50mm, the outer diameter is 72mm, and the height is 100 mm;
100 water permeable holes are uniformly distributed on the outer wall of the filter element protection tube 3, and the aperture of each water permeable hole is 2 mm;
the inner diameter of the first shell 6 is 100mm, the outer diameter is 104mm, and the height is 120 mm;
the bacteriostatic filter element 4 is a calcium oxide/silicon carbide filter element;
the preparation steps of the calcium oxide/silicon carbide filter element are as follows:
(1) soaking the silicon carbide filter element in ethanol for 30 minutes, taking out, naturally drying to constant weight, immersing in a calcium acetate colloidal solution for 2 hours, taking out, drying at 60 ℃ for 48 hours, and calcining at 600 ℃ for 2 hours to obtain a calcium oxide/silicon carbide filter element;
the preparation method of the calcium acetate colloidal solution comprises the following steps:
preparing a 2-methoxy ethanol solution of 1.0mol/L calcium acetate, adding ethanolamine with the same molar weight as the calcium acetate, and stirring at 70 ℃ for 2 hours at 250r/min to obtain the calcium acetate-calcium acetate suspension;
the filter element protection pipe 3 is sepiolite the surface of which is coated with titanium dioxide;
the preparation method of the filter element protection tube 3 comprises the following steps:
soaking sepiolite in acetone at room temperature for 5 minutes, drying with nitrogen for 10 minutes, loading onto pulsed laser deposition equipment, and depositing titanium dioxide on a support to obtain a filter element protection tube;
the deposition thickness of titanium dioxide is set to 10 nm;
the parameters of the pulsed laser deposition equipment are as follows:
the oxygen pressure was 1.33Pa, the pulse energy was 60mJ, the pulse count was 7500, and the pulse laser wavelength was 248 nm.
The first shell 6 is made of transparent acrylic material.
The preparation method of the silver ion sponge 555 comprises the following steps:
(1) preparing a silver nitrate solution with the concentration of 1.30mg/mL, wherein the solvent is tetrahydrofuran: a mixed solvent with the volume ratio of the plant aqueous solution being 2: 1;
the plant extract is a myrtle fruit water extract;
the preparation method of the aqueous extract of the myrtle fruit comprises the following steps:
cleaning fresh mature fruits of myrtle, crushing the fruits for 20 minutes by using a crusher to obtain pulp, adding the pulp into water with the mass 2 times that of the pulp, heating the pulp to 40 ℃, preserving the heat for 50 minutes at 40 ℃, and filtering the pulp by using 200-mesh gauze to obtain filtrate, namely the water extract of the myrtle fruits.
(2) Cutting melamine foam into pieces with the volume of 3cm multiplied by 1cm, soaking the pieces in the silver nitrate solution with the volume of 5 times, oscillating for 7 days at the rotating speed of 40r/min, taking out the pieces, washing the pieces for 3 times by using distilled water, wherein the using amount of the distilled water of each washing is the same as the volume of the silver nitrate solution, and drying the pieces for 24 hours at the temperature of 30 ℃ to obtain the silver ion sponge.
Example 4
A high-efficiency bacteriostatic water purifying device has the same structure as that of embodiment 1, wherein 1g of silver ion sponge is arranged in a first chamber 5, and 3g of activated carbon particles are filled in a second chamber 7;
the bacteriostatic filter element 4 and the filter element protection tube 3 are both hollow cylinders, wherein the inner diameter of the filter element protection tube 3 is 16mm, the outer diameter is 40mm, and the height is 80 mm; the inner diameter of the bacteriostatic filter element 4 is 50mm, the outer diameter is 72mm, and the height is 100 mm;
100 water permeable holes are uniformly distributed on the outer wall of the filter element protection tube 3, and the aperture of each water permeable hole is 2 mm;
the inner diameter of the first shell 6 is 100mm, the outer diameter is 104mm, and the height is 120 mm;
the bacteriostatic filter element 4 is a platinum/calcium oxide/silicon carbide filter element;
the preparation steps of the platinum/calcium oxide/silicon carbide filter element are as follows:
(1) soaking the silicon carbide filter element in ethanol for 30 minutes, taking out, naturally drying to constant weight, immersing in a calcium acetate colloidal solution for 2 hours, taking out, drying at 60 ℃ for 48 hours, and calcining at 600 ℃ for 2 hours to obtain a calcium oxide/silicon carbide filter element;
(2) putting the calcium oxide/silicon carbide filter element into a suction flask, adding a platinum chloride aqueous solution to ensure that the calcium acetate/silicon carbide filter element is completely immersed, connecting the suction flask with a vacuum pump to control the pressure in the flask to be between 10 and 15mbar, degassing for 2 hours, taking out and drying, and calcining for 2 hours at 600 ℃ to obtain the platinum/calcium oxide/silicon carbide filter element;
the preparation method of the calcium acetate colloidal solution comprises the following steps:
preparing a 2-methoxy ethanol solution of 1.0mol/L calcium acetate, adding ethanolamine with the same molar weight as the calcium acetate, and stirring at 70 ℃ for 2 hours at 250r/min to obtain the calcium acetate-calcium acetate suspension;
the preparation method of the platinum chloride aqueous solution comprises the following steps:
preparing a chloroplatinic acid hexahydrate aqueous solution with the concentration of 1.0g/L, and adjusting the pH value of the solution to 7.0 by using 0.5mol/L ammonia water to obtain the chloroplatinic acid hexahydrate aqueous solution.
The filter element protection pipe 3 is sepiolite the surface of which is coated with titanium dioxide;
the preparation method of the filter element protection tube 3 comprises the following steps:
soaking sepiolite in acetone at room temperature for 5 minutes, drying with nitrogen for 10 minutes, loading onto pulsed laser deposition equipment, and depositing titanium dioxide on a support to obtain a filter element protection tube;
the deposition thickness of titanium dioxide is set to 10 nm;
the parameters of the pulsed laser deposition equipment are as follows:
the oxygen pressure was 1.33Pa, the pulse energy was 60mJ, the pulse count was 7500, and the pulse laser wavelength was 248 nm.
The first shell 6 is made of transparent acrylic material.
The preparation method of the silver ion sponge 555 comprises the following steps:
(1) preparing a silver nitrate solution with the concentration of 1.30mg/mL, wherein the solvent is tetrahydrofuran: a mixed solvent with the volume ratio of the plant aqueous solution being 2: 1;
the plant extract is a myrtle fruit water extract;
the preparation method of the aqueous extract of the myrtle fruit comprises the following steps:
cleaning fresh mature fruits of myrtle, crushing the fruits for 20 minutes by using a crusher to obtain pulp, adding the pulp into water with the mass of 2 times that of the pulp, heating the pulp to 40 ℃, preserving the heat for 50 minutes at 40 ℃, and filtering the pulp by using 200-mesh gauze to obtain filtrate, namely the myrtle fruit water extract.
(2) Cutting melamine foam into pieces with the volume of 3cm multiplied by 1cm, soaking the pieces in the silver nitrate solution with the volume of 5 times, oscillating for 7 days at the rotating speed of 40r/min, taking out the pieces, washing the pieces for 3 times by using distilled water, wherein the using amount of the distilled water of each washing is the same as the volume of the silver nitrate solution, and drying the pieces for 24 hours at the temperature of 30 ℃ to obtain the silver ion sponge.
Example 5
A high-efficiency bacteriostatic water purifying device has the same structure as that of embodiment 1, wherein 1g of silver ion sponge is arranged in a first chamber 5, and 3g of activated carbon particles are filled in a second chamber 7;
the bacteriostatic filter element 4 and the filter element protection tube 3 are both hollow cylinders, wherein the inner diameter of the filter element protection tube 3 is 16mm, the outer diameter is 40mm, and the height is 80 mm; the inner diameter of the bacteriostatic filter element 4 is 50mm, the outer diameter is 72mm, and the height is 100 mm;
100 water permeable holes are uniformly distributed on the outer wall of the filter element protection tube 3, and the aperture of each water permeable hole is 2 mm;
the inner diameter of the first shell 6 is 100mm, the outer diameter is 104mm, and the height is 120 mm;
the bacteriostatic filter element 4 is a platinum/calcium oxide/silicon carbide filter element;
the preparation steps of the platinum/calcium oxide/silicon carbide filter element are as follows:
(1) soaking the silicon carbide filter element in ethanol for 30 minutes, taking out, naturally drying to constant weight, immersing in a calcium acetate colloidal solution for 2 hours, taking out, drying at 60 ℃ for 48 hours, and calcining at 600 ℃ for 2 hours to obtain a calcium oxide/silicon carbide filter element;
(2) placing the calcium acetate/silicon carbide filter element into a suction flask, adding a platinum chloride aqueous solution to ensure that the calcium oxide/silicon carbide filter element is completely immersed, connecting the suction flask with a vacuum pump to control the pressure in the flask to be between 10 and 15mbar, degassing for 2 hours, taking out and drying, and calcining for 2 hours at 600 ℃ to obtain the platinum/calcium oxide/silicon carbide filter element;
the preparation method of the calcium acetate colloidal solution comprises the following steps:
preparing a 2-methoxy ethanol solution of 1.0mol/L calcium acetate, adding ethanolamine with the same molar weight as the calcium acetate, and stirring at 70 ℃ for 2 hours at 250r/min to obtain the calcium acetate-calcium acetate suspension;
the preparation method of the platinum chloride aqueous solution comprises the following steps:
preparing a chloroplatinic acid hexahydrate aqueous solution with the concentration of 1.0g/L, and adjusting the pH value of the solution to 7.0 by using 0.5mol/L ammonia water to obtain the chloroplatinic acid hexahydrate aqueous solution.
The filter element protection pipe 3 is sepiolite the surface of which is coated with manganese dioxide;
the preparation method of the filter element protection tube 3 comprises the following steps:
soaking sepiolite in acetone at room temperature for 5 minutes, drying with nitrogen for 10 minutes, loading onto pulsed laser deposition equipment, and depositing manganese dioxide on a support to obtain a filter element protection tube;
setting the deposition thickness of manganese dioxide to be 10 nm;
the parameters of the pulsed laser deposition equipment are as follows:
the oxygen pressure was 1.33Pa, the pulse energy was 60mJ, the pulse count was 8000, and the pulse laser wavelength was 248 nm.
The first shell 6 is made of transparent acrylic material.
The preparation method of the silver ion sponge 555 comprises the following steps:
(1) preparing a silver nitrate solution with the concentration of 1.30mg/mL, wherein the solvent is tetrahydrofuran: a mixed solvent with the volume ratio of the plant aqueous solution being 2: 1;
the plant extract is a myrtle fruit water extract;
the preparation method of the aqueous extract of the myrtle fruit comprises the following steps:
cleaning fresh mature fruits of myrtle, crushing the fruits for 20 minutes by using a crusher to obtain pulp, adding the pulp into water with the mass 2 times that of the pulp, heating the pulp to 40 ℃, preserving the heat for 50 minutes at 40 ℃, and filtering the pulp by using 200-mesh gauze to obtain filtrate, namely the water extract of the myrtle fruits.
(2) Cutting melamine foam into pieces with the volume of 3cm multiplied by 1cm, soaking the pieces in the silver nitrate solution with the volume of 5 times, oscillating for 7 days at the rotating speed of 40r/min, taking out the pieces, washing the pieces for 3 times by using distilled water, wherein the using amount of the distilled water of each washing is the same as the volume of the silver nitrate solution, and drying the pieces for 24 hours at the temperature of 30 ℃ to obtain the silver ion sponge.
Example 6
A high-efficiency bacteriostatic water purifying device has the same structure as that of embodiment 1, wherein 1g of silver ion sponge is arranged in a first chamber 5, and 3g of activated carbon particles are filled in a second chamber 7;
the bacteriostatic filter element 4 and the filter element protection tube 3 are both hollow cylinders, wherein the inner diameter of the filter element protection tube 3 is 16mm, the outer diameter is 40mm, and the height is 80 mm; the inner diameter of the bacteriostatic filter element 4 is 50mm, the outer diameter is 72mm, and the height is 100 mm;
100 water permeable holes are uniformly distributed on the outer wall of the filter element protection tube 3, and the aperture of each water permeable hole is 2 mm;
the inner diameter of the first shell 6 is 100mm, the outer diameter is 104mm, and the height is 120 mm;
the bacteriostatic filter element is a platinum/calcium oxide/silicon carbide filter element;
the preparation steps of the platinum/calcium oxide/silicon carbide filter element are as follows:
(1) soaking the silicon carbide filter element in ethanol for 30 minutes, taking out, naturally drying to constant weight, immersing in a calcium acetate colloidal solution for 2 hours, taking out, drying at 60 ℃ for 48 hours, and calcining at 600 ℃ for 2 hours to obtain a calcium oxide/silicon carbide filter element;
(2) putting the calcium oxide/silicon carbide filter element into a suction flask, adding a platinum chloride aqueous solution to ensure that the calcium oxide/silicon carbide filter element is completely immersed, connecting the suction flask with a vacuum pump to control the pressure in the flask to be between 10 and 15mbar, degassing for 2 hours, taking out and drying, and calcining for 2 hours at 600 ℃ to obtain the platinum/calcium oxide/silicon carbide filter element;
the preparation method of the calcium acetate colloidal solution comprises the following steps:
preparing a 2-methoxy ethanol solution of 1.0mol/L calcium acetate, adding ethanolamine with the same molar weight as the calcium acetate, and stirring at 70 ℃ for 2 hours at 250r/min to obtain the calcium acetate-calcium acetate suspension;
the preparation method of the platinum chloride aqueous solution comprises the following steps:
preparing a chloroplatinic acid hexahydrate aqueous solution with the concentration of 1.0g/L, and adjusting the pH value of the solution to 7.0 by using 0.5mol/L ammonia water to obtain the chloroplatinic acid hexahydrate aqueous solution.
The filter element protection pipe 3 is sepiolite the surface of which is coated with metal oxide;
the metal oxide is a mixed metal oxide with the mass ratio of titanium dioxide to manganese dioxide of 1: 1;
the preparation method of the filter element protection tube 3 comprises the following steps:
soaking sepiolite in acetone at room temperature for 5 min, drying with nitrogen for 10 min, loading onto pulsed laser deposition equipment, and depositing mixed metal oxide on the support to obtain the filter element protection tube;
the metal oxide deposition thickness was set to 10 nm;
the parameters of the pulsed laser deposition equipment are as follows:
the oxygen pressure was 1.33Pa, the pulse energy was 60mJ, the pulse count was 7800, and the pulse laser wavelength was 248 nm.
The first shell 6 is made of transparent acrylic material.
The preparation method of the silver ion sponge 555 comprises the following steps:
(1) preparing a silver nitrate solution with the concentration of 1.30mg/mL, wherein the solvent is tetrahydrofuran: a mixed solvent with the volume ratio of the plant aqueous solution being 2: 1;
the plant extract is a myrtle fruit water extract;
the preparation method of the aqueous extract of the myrtle fruit comprises the following steps:
cleaning fresh mature fruits of myrtle, crushing the fruits for 20 minutes by using a crusher to obtain pulp, adding the pulp into water with the mass 2 times that of the pulp, heating the pulp to 40 ℃, preserving the heat for 50 minutes at 40 ℃, and filtering the pulp by using 200-mesh gauze to obtain filtrate, namely the water extract of the myrtle fruits.
(2) Cutting melamine foam into pieces with the volume of 3cm multiplied by 1cm, soaking the pieces in the silver nitrate solution with the volume of 5 times, oscillating for 7 days at the rotating speed of 40r/min, taking out the pieces, washing the pieces for 3 times by using distilled water, wherein the using amount of the distilled water of each washing is the same as the volume of the silver nitrate solution, and drying the pieces for 24 hours at the temperature of 30 ℃ to obtain the silver ion sponge.
Test example 1
Test of bacteriostatic Effect
The silver ion sponges prepared in examples 2-3 were tested for bacteriostatic effect, while melamine foam was used as a control.
2mg of silver ion sponge was immersed in 1mL of an E.coli (Luria Bertani) suspension (bacteria content: 8000000CFU/mL), shaken at 200r/min for 4 hours, and the optical density of the suspension was measured by a photoelectric colorimeter after 120 minutes and 240 minutes, respectively.
The photoelectric colorimeter is a 581-S type photoelectric colorimeter manufactured by Changzhou Dedu precision instruments Co.
The test results are shown in table 1.
TABLE 1 bacteriostatic effect table
| Bacterial count (OD) after 120 min600) | Bacterial count (OD) after 240 minutes600) | |
| Example 2 | 0.07 | 0.20 |
| Example 3 | 0.06 | 0.10 |
| Comparative example | 0.63 | 1.75 |
As can be seen from the above table, the silver ion sponges provided by the invention (examples 2-3) all have very good bacteriostatic effects. The silver ion sponge (example 3) using the extract of myrtle as a solvent in the preparation process has a longer-lasting bacteriostatic effect, and the number of bacteria in the solution is still kept at a low level after 240 minutes.
Test example 2
Organic contaminant resistance test
Selecting toluene as volatile organic compound representative, and adding 100ppm toluene water solution with water temperature of 30 deg.C at 100mL/h cm3The flow rate of (a) was injected into the high efficiency bacteriostatic water purification cartridge made according to examples 2-6. And (5) receiving water at a water outlet for 80h, 160h and 240h after water inlet begins, and detecting the content of toluene in the water.
The concentration of toluene is detected by adopting a gas chromatograph which is a 6890N type gas chromatograph produced by Agilent technologies, Inc., a chromatographic column is FFAP (25m is multiplied by 0.32mm), carrier gas is nitrogen, the flow rate is 1.8mL/min, combustion gas is hydrogen, 40mL/min, compressed air is 400mL/min, the temperature of the column is programmed to be raised, the temperature is kept at 60 ℃ for 3 minutes, the temperature is raised at 20 ℃/min, the temperature is kept at 200 ℃ for 2 minutes, the temperature of a detector is 200 ℃, the temperature of a gasification chamber is 200 ℃, and the split ratio is 1: 50.
The test results are shown in table 2.
TABLE 2 toluene content in Water
From the above table, it is understood that the filter element protection tubes prepared by using the platinum/calcium oxide/silicon carbide filter elements (examples 4 to 6) are better than the calcium oxide/silicon carbide filter elements (examples 2 to 3), and the filter element protection tubes prepared by using titanium dioxide and manganese dioxide (example 6) are better than the filter element protection tubes prepared by titanium dioxide or manganese dioxide (examples 4 to 5) in terms of protection time and low toluene concentration can be maintained for a longer period of time.
Test example 3
Silver ion retention test
Distilled water solution with water temperature of 25 ℃ is added at a ratio of 100mL/h cm3The flow rate of (a) was injected into the high efficiency bacteriostatic water purification cartridge made according to examples 2-6. And (5 h, 10h and 15h after water inlet begins, respectively, receiving water at a water outlet, and detecting the content of silver ions in the water.
The method is characterized in that the content of silver ions in water is measured by graphite furnace atomic absorption spectrometry, and the atomic absorption spectrophotometer is 3500AAS type atomic absorption spectrometer produced by Saimer Feishell science and technology company. The assistant gas is air, the fuel gas is acetylene, the assistant-fuel gas flow ratio is 4:1, the maximum flame temperature is 2300 ℃, and the combustion speed is 160 cm/s.
The test results are shown in table 3.
TABLE 3 residual amount of silver ions in water
*Traces indicate that the silver ion content is below the lower detection limit, but can be detected qualitatively.
As can be seen from the above table, the bactericidal material provided by the present invention has a strong adsorption capacity for silver ions, and the content of silver ions is lower than the safety limit of human body during a long-term use, and especially, the bactericidal material using the filter element protection tube made of platinum/calcium oxide/silicon carbide filter element, titanium dioxide and manganese dioxide, and the tetrahydrofuran and the myrtle extract (example 6) as the solvent during the preparation process has the best effect, and can effectively sterilize and reduce the discharge of silver ions.
Claims (7)
1. A high-efficient antibacterial purifier, characterized by, including the casing of a plastics material, the inside of casing is moulded plastics and is formed with a baffle, will the inside of casing has been divided into intake antrum and play water cavity through this baffle, the outside of casing is moulded plastics and is formed with a inlet tube that corresponds the intake antrum, and a outlet pipe that corresponds play water cavity, it has a filter core protection tube to mould plastics in the upper end of casing, the outside of filter core protection tube with be formed with a boss between the casing, the outside position department of this boss inserts an antibacterial filter core downwards, antibacterial filter core with form first cavity between the filter core protection tube, the upper end threaded connection of casing has the first shell of detachable, first shell with form the second cavity between the antibacterial filter core, the top of casing is provided with the first through-hole that communicates the second cavity and play water cavity, the top of the shell is provided with a second through hole for communicating the filter element protection tube with the water inlet cavity, water enters the water inlet cavity from the water inlet tube, then passes through the second through hole and then enters the filter element protection tube, water permeable holes for discharging water outwards are uniformly distributed on the outer wall of the filter element protection tube, the aperture of each water permeable hole is 1-2 mm, silver ion sponge is filled in the first cavity, and activated carbon particles are filled in the second cavity;
the preparation method of the silver ion sponge comprises the following steps:
(1) dissolving silver nitrate in a solvent to prepare a silver nitrate solution with the concentration of 0.05-2.00mg/mL, wherein the solvent is tetrahydrofuran: the volume ratio of the plant extract is 10 (0-5);
the plant extract is water extract of myrtle fruits or pomegranate fruits;
(2) cutting sponge into 1-5cm3Soaking in silver nitrate solution after size reduction, oscillating for 1-7 days, taking out, washing with distilled water for 3-5 times, and drying at 30-50 deg.C for 12-24 hr to obtain silver ion sponge;
the bacteriostatic filter element is a platinum/metal oxide/silicon carbide filter element, and the preparation method of the platinum/metal oxide/silicon carbide filter element is as follows;
(1) soaking the silicon carbide filter element in ethanol for 30-60 minutes, taking out and drying, immersing the silicon carbide filter element in a metal salt colloidal solution for 0.5-4 hours, taking out and drying, and calcining at the temperature of 400-;
(2) putting the metal oxide/silicon carbide filter element into a suction flask, adding a platinum chloride aqueous solution to ensure that the metal oxide/silicon carbide filter element is completely immersed, degassing for 0.5-3 hours, taking out and drying, and calcining for 0.5-3 hours at the temperature of 400-600 ℃ to obtain the platinum/metal oxide/silicon carbide filter element.
2. The efficient bacteriostatic water purifying device according to claim 1, wherein a rubber sealing ring is arranged at the contact position of the boss and the bacteriostatic filter element.
3. The efficient bacteriostatic water purifying device according to claim 1, wherein a pressed rubber sleeve is fixed on the inner top of the first shell for supporting gluing, and the lower end surface of the pressed rubber sleeve acts on the top of the bacteriostatic filter element.
4. The efficient bacteriostatic water purifying device according to claim 3, wherein the outer wall of the pressed rubber sleeve is provided with an annular groove for facilitating the compression of the pressed rubber sleeve.
5. The efficient bacteriostatic water purifying device according to claim 1, wherein the first shell is made of transparent acrylic material.
6. The efficient bacteriostatic water purifying device according to claim 1, wherein the filter element protecting pipe is a supporter with the surface coated with metal oxide;
the metal oxide is any one or a mixture of any more of titanium dioxide, copper oxide and manganese dioxide in any proportion;
the support is hydrotalcite or sepiolite.
7. The efficient bacteriostatic water purifying device according to claim 1, wherein the sponge is melamine foam or polyurethane sponge.
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| CN109456086A (en) * | 2018-12-27 | 2019-03-12 | 刘岳定 | A kind of antibacterial composite silicon carbide ceramic and its preparation process |
| CN109502825A (en) * | 2018-12-27 | 2019-03-22 | 刘岳定 | A kind of antibacterial ceramic water-purification filter core |
| CN113387475B (en) * | 2021-06-17 | 2022-06-21 | 长沙水老官食品有限公司 | High-efficient antibacterial purifier |
| CN113443728A (en) * | 2021-07-01 | 2021-09-28 | 际华三五四二纺织有限公司 | Mechanical sealing cooling water circulating device of size mixing cylinder |
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