CN101502732A - Porous biological ceramic filter element as well as preparation method and use thereof - Google Patents
Porous biological ceramic filter element as well as preparation method and use thereof Download PDFInfo
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- CN101502732A CN101502732A CNA2009100960749A CN200910096074A CN101502732A CN 101502732 A CN101502732 A CN 101502732A CN A2009100960749 A CNA2009100960749 A CN A2009100960749A CN 200910096074 A CN200910096074 A CN 200910096074A CN 101502732 A CN101502732 A CN 101502732A
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Abstract
The invention relates to a porous biological ceramics filter core as well as a preparation method and application thereof, belonging to the technical field of ceramics. The invention is characterized in that: the porous biological ceramics filter core is composed of 50-90% of hydroxylapatite carrying Ag and 10-50% of aluminum titanate, is distributed in the form of microcrystallite of 1-100mum, undergoes extrusion forming, and is calcined at the calcination temperature of 450-1400 DEG C into porous honeycomb ceramics with the pore diameter of 0.1-4mm; the preparation method comprises: crushing the hydroxylapatite carrying Ag and the aluminum titanate into microcrystallite with the fineness of 1-100mum, adding water for even stirring in proportion, filter-pressing and dehydrating the microcrystallite into filter cake, carrying out extrusion forming on the filter cake after mud-smelting, drying and calcining; the invention has the advantages that: (1) mounting, using and replacing methods are simple and convenient; (2) the invention can be used for drinkable water delivery terminal with the sterilization rate over 90%; and (3) the process is simple and the invention can be applicable to mass industrial production.
Description
Technical field
The present invention relates to a kind of porous ceramics product and its production and application, in particular, relate to composite porous biological ceramic filter element and its production and application, belong to the ceramic technology field.
Background technology
At present, because the source water pollution is serious day by day, the drinking water quality safety standard improves constantly, and traditional handling technology of water supply is difficult to satisfy the drinking water water outlet requirement of increasingly stringent.Drinking water in municipal water supply pipe network transmission because bacterium and virus etc. is sticked in pipeline easily for a long time and fast breeding grow, cause bacterium and the viral important safety hidden danger that becomes human health in the drinking water.It is reported, but the pathogenic microorganisms of polluted drinking water has hundreds of.Be the generation of stopping water borne disease and popular, guarantee health, Drinking Water must be through disinfecting and can drinking.
The prior art that Drinking Water is sterilized mainly comprises: ozonization, disinfection by ultraviolet light, film sterilization, chemical agent sterilization and photochemical oxidation sterilization, they cause respectively having quality because of the principle difference of sterilization.Utilized ozone as a kind of strong oxidizer various microorganisms to be had extremely strong killing action as ozone disinfecting technology, when the not enough 0.3mg/L of residual ozone, sterilization effect is not good, and concentration may influence the mouthfeel of water when surpassing 0.6mg/L, increases precipitation.So after the water of ozonization generally will be placed 24 hours, could eliminate peculiar smell; Disinfection by ultraviolet light is a kind of physical disinfection technology, is to kill microorganism in the water by ultraviolet radiation.Suitable uv dosage can reach also will good sterilization effect than ozone, is a kind of " green bactericide " that has no side effect.But have only the water body that arrives when ultra violet lamp, and when reaching dose intensity, the sterilization effect that disinfection by ultraviolet light just has, irradiation less than water body just do not have disinfective action.And disinfection by ultraviolet light does not continue sterilizing ability, in case the water contact stain source of the bacterium of going out equally can be contaminated; It is by screening and centrifugation the interception in various degree of various microorganisms to be removed that embrane method is filtered disinfection technology.But have only the interception degerming functions because embrane method is filtered, and do not have sterilization, sterilization functions, add film itself and also can contaminatedly multiply bacterium; Chemical agent sterilization is the disinfection technology widely of tradition the most, comprise that adding disinfectants such as using chlorine, chloramines enters in the drinking water pipeline, make it to generate strong oxidizer to the extremely strong killing action of various microorganisms by adding excessive chemical agent with the water reaction, yet excessive chemical agent often is easy to generate DBPs (DBPs), human body is had stronger carcinogenesis, need just can slow down by the dosing method and the pipeline control of complexity; Photochemical oxidation is a kind of high-level oxidation technology (AOPs).Its mechanism be exactly with some strong oxidative disinfectant ozone, hydrogen peroxide etc. under ultraviolet irradiation, expedite the emergence of and be converted into the hydroxyl that oxidability is stronger, reaction selectivity is lower, course of reaction is gentle (HO) free radical.This disinfection technology does not have non-stimulated, the free from extraneous odour of burn into, has improved operating condition greatly, but in actual applications, very important to equipment configuration and selection of process parameters, the investment of this technology and cost are also than higher in addition.
Summary of the invention
Purpose of the present invention and task will overcome prior art and exist: the not effectively lasting sterilization and the shortcoming separately thereof from the drinking water water side of (1) existing disinfecting technical; (2) has the antibiotic validity of the water supply hygiene utensil of antibacterial functions; (3) higher to the effectively special sterilization treatment process investment of water supply network transmission ﹠ distribution drinking water, and provide a kind of porous biological ceramic filter element to be installed in the drinking water water side to be applied in the water-treatment technology field the special technical solution that proposes porous biological ceramic filter element of the present invention and its production and application.
Basic design of the present invention is, argentum-carried hydroxylapatite is high sterilization ability of a kind of high absorption property and the biological ceramic composite material of durable antibiotic time, with argentum-carried hydroxylapatite as raw material, utilize extrusion moulding prepare adsorption function strong, handle that water flux is big, the preparation method simple and be convenient to the porous biological ceramic filter element of the marketization.
Porous biological ceramic filter element proposed by the invention, it is the aluminium titanates that carries silver-colored argentum-carried hydroxylapatite, 10%-50% by 50%-90%, with 1-100 μ m crystallite evenly distribute, the porous honeycomb body of extrusion modling, calcining forms under 450-1400 ℃ firing temperature, and wherein the pore diameter range of porous honeycomb body is 0.1-4mm.
The porous biological ceramic filter element that goes out proposed by the invention is characterized in that, the used silver-colored argentum-carried hydroxylapatite preparation method of carrying is: prepare diammonium hydrogen phosphate and calcium nitrate solution respectively with 3: 5 ratios, the pH value of regulating separately with ammoniacal liquor is not less than 7.The former is slowly splashed in the calcium nitrate solution of continuous stirring, behind to be added the finishing, leave standstill after continuing to stir 2-8h, thoroughly clean again and separate to remove impurity NH
4 +, the silver nitrate that adds the 0.001-5% mol ratio more fully mixes, final drying; Used aluminium titanates is to form batching by the theoretical standard of aluminium titanates, adopts titanium dioxide and alchlor to make raw material, and the introducing magnesium fluoride makes mineralizer and magnesia is made inhibitor, makes it synthetic under high-temperature calcination.
The preparation method of porous biological ceramic filter element proposed by the invention, it is characterized in that preparation process is as follows: will carry silver-colored argentum-carried hydroxylapatite and aluminium titanates and be crushed to fineness 1-100 μ m crystallite, and add water in proportion and stir, filter-press dehydration becomes mud cake, moisture is 20-30% in the mud cake, adds suet, tung oil or the polyethylene glycol of 2-15% in pug, vacuum pugging 1-4 time, extrusion modling, dry, calcining, calcining heat is 450-1400 ℃, temperature retention time is 1-4 hour.
Use porous biological ceramic filter element proposed by the invention is handled the application of municipal domestic water, it is characterized in that: porous biological ceramic filter element is connected on outward on the municipal domestic water tap delivery port by seal, the pressure reduction of registering one's residence that is provided by the municipal water supply pipe network provides filtration needed driving force, absorption such as bacterium, virus in the water is separated with holding back, through behind the filter core, the removal of bacteria rate in its municipal water supply reaches more than 90%.
Use porous biological ceramic filter element provided by the present invention in water treatment field, on different municipal domestic water taps, can design different pore diameter ranges with fit on and difform porous biological ceramic filter element, be convenient to the installation and the use of the municipal domestic water tap of various criterion specification, and porous.
Major advantage of the present invention has:
(1) porous biological ceramic filter element installation, use and replacing method are simple and convenient;
(2) bacterium and virus in biological effective adsorbing separation of sorbing material of argentum-carried hydroxylapatite and the deactivation water;
(3) porous biological ceramic filter element preparation technology is simple, is convenient to large-scale industrial production.
Description of drawings
The present invention is provided with 4 width of cloth accompanying drawings altogether, now is respectively described below:
Fig. 1 is the porous biological ceramic filter element schematic diagram
The schematic diagram of porous biological ceramic filter element of the present invention. As seen, porous biological ceramic filter element is the hole among the figure The cellular biological ceramic filter element that the road is upright, face compound particle particle diameter can evenly distribute, and the fenestra aperture is even.
Fig. 2 is the top view of Fig. 1
This is the top view of face. As seen, argentum-carried hydroxylapatite bioceramic duct is perpendicular to filter core among the figure Surface direction is evenly distributed, and is discrete orderly, according to different extrusion dies, and the hole honeycomb ceramics that can prepare Pore diameter range be 0.1-4mm.
Fig. 3 is the using method figure of Fig. 1
1 is porous biological ceramic filter element among the figure, and 2 is the filter core seal, and 3 for having loaded the porous bio-ceramic filter The seal of core, 4 are life hydrant, 5 for having installed the hydrant of porous biological ceramic filter element. First Earlier porous biological ceramic filter element directly is filled in the filter core seal, secondly will have loaded the seal of filter core Directly be rotatably mounted on domestic water tap mouth, the multiporous biological that direct taking-up has been used during replacing by screw thread Ceramic element is also loaded new filter core and is got final product.
The specific embodiment
Below by specific embodiment, further specify the details of porous biological ceramic filter element preparation method and application thereof.
Embodiment 1:
The preparation aperture is the porous biological ceramic filter element of 0.1mm, and step is:
The first step, the preparation of argentum-carried hydroxylapatite powder
Ratio with 3:5 is prepared diammonium hydrogen phosphate and calcium nitrate solution respectively, and the pH value of regulating separately with ammoniacal liquor is 7.The former is slowly splashed in the calcium nitrate solution of continuous stirring, behind to be added the finishing, leave standstill after continuing to stir 8h, thoroughly clean again and separate to remove impurity NH
4 +, the silver nitrate that adds 0.001% mol ratio more fully mixes, final drying;
Second step, the preparation of aluminium titanates powder
The theoretical standard of aluminium titanates is formed batching, adopts titanium dioxide and alchlor to make raw material, and the introducing magnesium fluoride makes mineralizer and magnesia is made inhibitor;
The 3rd step, the preparation of porous biological ceramic filter element
Argentum-carried hydroxylapatite with 50%, 50% aluminium titanates, be crushed to fineness 1 μ m crystallite, add water in proportion and stir, filter-press dehydration becomes mud cake, moisture is 200% in the mud cake, the suet of adding 2% in pug, pugging 1 time, extrusion modling, dry, calcining, calcining heat is 450 ℃, and temperature retention time is 1 hour, naturally cools to room temperature then and takes out.
Testing result: porous biological ceramic filter element is shaped as column type, and the aperture is about 0.1mm, and face is smooth and be upright porous.
Embodiment 2:
The preparation aperture is the porous biological ceramic filter element of 1mm, and step is:
The first step, the preparation of argentum-carried hydroxylapatite powder
Prepare diammonium hydrogen phosphate and calcium nitrate solution respectively with 3: 5 ratios, the pH value of regulating separately with ammoniacal liquor is 8.The former is slowly splashed in the calcium nitrate solution of continuous stirring, behind to be added the finishing, leave standstill after continuing to stir 4h, thoroughly clean again and separate to remove impurity NH
4 +, the silver nitrate that adds 1% mol ratio more fully mixes, final drying;
Second step, the preparation of aluminium titanates powder
The theoretical standard of aluminium titanates is formed batching, adopts titanium dioxide and alchlor to make raw material, and the introducing magnesium fluoride makes mineralizer and magnesia is made inhibitor;
The 3rd step, the preparation of porous biological ceramic filter element
Argentum-carried hydroxylapatite with 80%, 20% aluminium titanates, be crushed to fineness 10 μ m crystallites, add water in proportion and stir, filter-press dehydration becomes mud cake, moisture is 25% in the mud cake, the polyethylene glycol of adding 10% in pug, pugging 2 times, extrusion modling, dry, calcining, calcining heat is 500 ℃, and temperature retention time is 2 hours, naturally cools to room temperature then and takes out.
Testing result: porous biological ceramic filter element is shaped as the regular hexahedron type, and the aperture is about 1mm, and face is smooth and be upright porous.
Embodiment 3:
The preparation aperture is the porous biological ceramic filter element of 4mm, and step is:
The first step, the preparation of argentum-carried hydroxylapatite powder
Prepare diammonium hydrogen phosphate and calcium nitrate solution respectively with 3: 5 ratios, the pH value of regulating separately with ammoniacal liquor is 9.The former is slowly splashed in the calcium nitrate solution of continuous stirring, behind to be added the finishing, leave standstill after continuing to stir 2h, thoroughly clean again and separate to remove impurity NH
4 +, the silver nitrate that adds 5% mol ratio more fully mixes, final drying;
Second step, the preparation of aluminium titanates powder
The theoretical standard of aluminium titanates is formed batching, adopts titanium dioxide and alchlor to make raw material, and the introducing magnesium fluoride makes mineralizer and magnesia is made inhibitor;
The 3rd step, the preparation of porous biological ceramic filter element
Argentum-carried hydroxylapatite with 90%, 10% aluminium titanates, be crushed to fineness 100 μ m crystallites, add water in proportion and stir, filter-press dehydration becomes mud cake, moisture is 30% in the mud cake, the tung oil of adding 15% in pug, pugging 4 times, extrusion modling, dry, calcining, calcining heat is 1400 ℃, and temperature retention time is 4 hours, naturally cools to room temperature then and takes out.
Testing result: porous biological ceramic filter element is shaped as column type, and the aperture is 4mm, and face is smooth and be upright porous.
Embodiment 4: porous biological ceramic filter element is used for the terminal processing of drinking water
Dalian * * sub-district is by Daliang City's water supply network transmission ﹠ distribution water, and water quality: total number of bacteria is 100/mL, and coliform count is 10/mL, and pipe is pressed and is 3.0m, and flow is 4L/min.
Cylindrical porous biological ceramic filter element in the Application Example 1 is installed in the terminal Drinking Water of drinking water tap.Under the room temperature condition, porous biological ceramic filter element is connected on outward on the municipal domestic water tap delivery port by seal, the pressure reduction of registering one's residence that is provided by the municipal water supply pipe network provides filtration needed driving force, absorption such as bacterium, virus in the water is separated with holding back, through behind the filter core, removal of bacteria rate in its municipal water supply reaches 99%, directly drinks the potential hazard that human body is not had substantially bacterium and virus infections.
Embodiment 5: porous biological ceramic filter element is used for the terminal processing of drinking water
Hangzhou * * sub-district is by Hangzhou water supply network transmission ﹠ distribution water, and water quality: total number of bacteria is 50/mL, and coliform count is 5/mL, and pipe is pressed and is 2.0m, and flow is 2L/min.
Regular hexahedron shape porous biological ceramic filter element in the Application Example 2 is installed in the terminal Drinking Water of drinking water tap.Under the room temperature condition, porous biological ceramic filter element is connected on outward on the municipal domestic water tap delivery port by seal, the pressure reduction of registering one's residence that is provided by the municipal water supply pipe network provides filtration needed driving force, absorption such as bacterium, virus in the water is separated with holding back, through behind the filter core, removal of bacteria rate in its municipal water supply reaches 95%, directly drinks the potential hazard that human body is not had substantially bacterium and virus infections.
Embodiment 6: porous biological ceramic filter element is used for the terminal processing of drinking water
Nanjing * * sub-district is by Hangzhou water supply network transmission ﹠ distribution water, and water quality: total number of bacteria is 150/mL, and coliform count is 8/mL, and pipe is pressed and is 2.5m, and flow is 3L/min.
Cylindrical porous biological ceramic filter element in the Application Example 3 is installed in the terminal Drinking Water of drinking water tap.Under the room temperature condition, porous biological ceramic filter element is connected on outward on the municipal domestic water tap delivery port by seal, the pressure reduction of registering one's residence that is provided by the municipal water supply pipe network provides filtration needed driving force, absorption such as bacterium, virus in the water is separated with holding back, through behind the filter core, removal of bacteria rate in its municipal water supply reaches 90%, directly drinks the potential hazard that human body is not had substantially bacterium and virus infections.
Claims (5)
1. porous biological ceramic filter element, it is characterized in that: porous biological ceramic filter element is by the argentum-carried hydroxylapatite of 50%-90%, the aluminium titanates of 10%-50%, with 1-100 μ m crystallite evenly distribute, the porous honeycomb body of extrusion modling, calcining forms under 450-1400 ℃ firing temperature, and wherein the pore diameter range of porous honeycomb body is 0.1-4mm.
2. porous biological ceramic filter element according to claim 1 is characterized in that, used argentum-carried hydroxylapatite preparation method is as follows:
Ratio with 3:5 is prepared diammonium hydrogen phosphate and calcium nitrate solution respectively, and the pH value of regulating separately with ammoniacal liquor is not less than 7.The former is slowly splashed in the calcium nitrate solution of continuous stirring, behind to be added the finishing, leave standstill after continuing to stir 2-8h, thoroughly clean again and separate to remove impurity NH
4 +, the silver nitrate that adds the 0.001-5% mol ratio more fully mixes, final drying.
3. porous biological ceramic filter element according to claim 1, it is characterized in that: used aluminium titanates is to form batching by the theoretical standard of aluminium titanates, adopt titanium dioxide and alchlor to make raw material, the introducing magnesium fluoride makes mineralizer and magnesia is made inhibitor, makes it synthetic under high-temperature calcination.
4. prepare the method for porous biological ceramic filter element as claimed in claim 1, it is characterized in that, preparation process is as follows:
Argentum-carried hydroxylapatite and aluminium titanates are crushed to fineness 1-100 μ m crystallite, adding water in proportion stirs, filter-press dehydration becomes mud cake, moisture is 20-30% in the mud cake, adds suet, tung oil or the polyethylene glycol of 2-15% in pug, pugging 1-4 time, extrusion modling, dry, calcining, calcining heat is 450-1400 ℃, temperature retention time is 1-4 hour.
5. use the application of porous biological ceramic filter element as claimed in claim 1, it is characterized in that: porous biological ceramic filter element is connected on outward on the municipal domestic water tap delivery port by seal, the pressure reduction of registering one's residence that is provided by the municipal water supply pipe network provides filtration needed driving force, absorption such as bacterium, virus in the water is separated with holding back, through behind the filter core, the removal of bacteria rate in its municipal water supply reaches more than 90%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633333A (en) * | 2012-04-06 | 2012-08-15 | 耿良玲 | Antibacterial water nozzle and manufacturing method thereof |
| CN103382096A (en) * | 2013-06-26 | 2013-11-06 | 蚌埠德美过滤技术有限公司 | Anti-microbial ceramic filter core and preparation method thereof |
| CN106673107A (en) * | 2016-12-22 | 2017-05-17 | 浙江碧岩环保材料股份有限公司 | Multifunctional water purification inner core and manufacturing technology thereof |
| CN110358234A (en) * | 2018-04-11 | 2019-10-22 | 中国科学院宁波材料技术与工程研究所 | A kind of preparation method and applications of polymer matrix composite |
-
2009
- 2009-02-09 CN CNA2009100960749A patent/CN101502732A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633333A (en) * | 2012-04-06 | 2012-08-15 | 耿良玲 | Antibacterial water nozzle and manufacturing method thereof |
| CN103382096A (en) * | 2013-06-26 | 2013-11-06 | 蚌埠德美过滤技术有限公司 | Anti-microbial ceramic filter core and preparation method thereof |
| CN103382096B (en) * | 2013-06-26 | 2014-11-26 | 蚌埠德美过滤技术有限公司 | Anti-microbial ceramic filter core and preparation method thereof |
| CN106673107A (en) * | 2016-12-22 | 2017-05-17 | 浙江碧岩环保材料股份有限公司 | Multifunctional water purification inner core and manufacturing technology thereof |
| CN110358234A (en) * | 2018-04-11 | 2019-10-22 | 中国科学院宁波材料技术与工程研究所 | A kind of preparation method and applications of polymer matrix composite |
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Application publication date: 20090812 |