CN103341352A - Filter medium for removing 17alpha-ethinyl estraglycol in drinking water and preparation method thereof - Google Patents
Filter medium for removing 17alpha-ethinyl estraglycol in drinking water and preparation method thereof Download PDFInfo
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Abstract
The invention provides a preparation method of a filter medium for removing 17alpha-ethinyl estraglycol in drinking water. The preparation method comprises the steps of mixing ultra-high molecular weight polyethylene powder, wood medical activated carbon powder, an NaY molecular sieve, modified bentonite, a mesoporous molecular sieve and a pore-forming agent in a weight ratio of (35-45):(25-35):(5-15):(15-25):(5-15):(5-15), pressing the mixture in a mould, and sintering and cooling the product, thus obtaining the filter medium, wherein the sintering temperature is 230-240 DEG C and the sintering time is 90-120 minutes. The preparation method has the beneficial effects that after the raw materials are sintered, net structures crosslinked with each other are formed, have addition synergy and can effectively adsorb 17alpha-ethinyl estraglycol; the 17alpha-ethinyl estraglycol removal rate of the filter medium is 95-99%, and the filter medium is simple and convenient to use and low in cost; and the filter elements prepared from the filter medium are convenient to use, dispense with subsequent treatment and are suitable for treating drinking water in home terminals.
Description
Technical field
The present invention relates to the filter medium field, particularly a kind of filter medium of removing 17 α in the drinking water-female ethylene glycol of acetenyl and preparation method thereof, the filter core, the water purifying plant and drinking Fountains that are constituted by this filter medium.
Background technology
The female ethylene glycol of 17 α-acetenyl (EF2) is a kind of artificial synthetic estrogen, fat-soluble, chemical property is stable, be difficult to biodegradation, when mass concentration is low to moderate ng/L, still can work the mischief to organism, as show very strong interference sex of foetus difference, change the metabolism of fat and glucose, cause the biological effects such as canceration of reproductive organs.The female ethylene glycol of 17 α-acetenyl is through being often used as the chemical intermediate of oral contraceptive or making epoxy resin, Merlon, fire retardant etc.
Investigation shows, worldwide river, ocean and bed mud thereof are all generally found the existence of 17 α-female ethylene glycol of acetenyl in the knitting underground water.In the sewage and surface water of China, it is higher that the female ethylene glycol of 17 α-acetenyl detects frequency.In the drinking water seedbed, go out in water factory and the water supply network, also often detected in the water discharge of water faucet, show that the water quality of the drinking water of China is subjected to serious threat.
Traditional dirty waste water and the processing method of running water can not effectively be removed the female ethylene glycol of exogenous 17 α-acetenyl, and physisorphtion is uncertain more and handle not thorough; The easy swelling of membrane separation process is stopped up, the bad processing of dirt under the high and interception of valency and cause secondary pollution; High-level oxidation technology, especially the plasma technology processing cost is too high, complex structure; Ultraviolet ray/dioxygen water law produces effect to removing the female ethylene glycol of 17 α-acetenyl, but the existence of the chlorion in the water, heavy carbonic radical ion, nitrate ion has to make removal effect have a greatly reduced quality.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of filter medium of removing 17 α in the drinking water-female ethylene glycol of acetenyl and preparation method thereof, this filter medium is to the clearance height of 17 α-female ethylene glycol of acetenyl, easy to use, price is low, and the filter core, purifier and the water dispenser that are made of this filter medium also are provided.
The invention discloses a kind of preparation method of filter medium for removal drinking water 17 α-female ethylene glycol of acetenyl, comprise the steps:
(A) ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent are mixed, obtain mixture;
The weight ratio of described ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent is (35～45): (25～35): (5～15): (15～25): (5～15): (5～15);
Described method for preparing modified bentonite is: natural montmorillonite is added water stir into slurry, add in the slurry and contain Al
3+Or Fe
3+The cation soluble-salt, the addition of soluble-salt is 1～4wt% of natural montmorillonite in the slurry;
(B) mixture of step (A) gained is suppressed sintering, cooling in mould;
The temperature of described sintering is 230～240 ℃, and the time of described sintering is 90～120 minutes.
Preferably, the weight ratio of described ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent is (37～42): (28～33): (7～12): (17～22): (7～12): (7～12).
Preferably, the particle diameter of described wooden medicinal active carbon dust is 60 μ m～79 μ m.
Preferably, the particle diameter of described ultra-high molecular weight polyethylene powder is 70 μ m～80 μ m.
Preferably, the aperture of described NaY type molecular sieve is 1.5nm～1.8nm.
Preferably, the particle diameter of described modified alta-mud is 50～74 μ m.
The written or printed documents disclosure of the Invention the filter medium that be used for to remove drinking water 17 α-female ethylene glycol of acetenyl that obtains of the described preparation method of technique scheme.
The invention discloses a kind of filter core, constituted by the described filter medium of technique scheme.
The invention discloses a kind of purifier, comprise the described filter medium of technique scheme or the described filter core of technique scheme.
The invention also discloses a kind of water dispenser, comprise the described purifier of technique scheme.
Compared with prior art, the present invention is (35～45) with weight ratio: (25～35): (5～15): (15～25): (5～15): the ultra-high molecular weight polyethylene powder of (5～15), wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent mix, compacting in mould, sintering cooling obtain filter medium.Ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent are behind sintering, the network structure that formation is cross-linked with each other, has the adduction synergy, can effectively adsorb the female ethylene glycol of 17 α-acetenyl, for the female ethylene glycol clearance of 17 α in the drinking water-acetenyl height, easy to use, cost is low.Easy to use by the filter core that above-mentioned filter medium is made, need not subsequent treatment, be fit to home terminal drinking-water and handle.After testing, this filter medium reaches 95%～99% to the clearance of 17 α in the drinking water-female ethylene glycol of acetenyl.
The specific embodiment
In order further to understand the present invention, be described below in conjunction with the preferred embodiment of the invention of embodiment, but should be appreciated that these describe just to further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
The embodiment of the invention discloses a kind of preparation method of filter medium for removal drinking water 17 α-female ethylene glycol of acetenyl, comprise the steps:
(A) ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent are mixed, obtain mixture;
The weight ratio of described ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent is (35～45): (25～35): (5～15): (15～25): (5～15): (5～15);
Described method for preparing modified bentonite is: natural montmorillonite is added water stir into slurry, add in the slurry and contain Al
3+Or Fe
3+The cation soluble-salt, the addition of soluble-salt is 1～4wt% of natural montmorillonite in the slurry;
(B) mixture of step (A) gained is suppressed sintering, cooling in mould;
The temperature of described sintering is 230～240 ℃, and the time of described sintering is 90～120 minutes.
The present invention is raw material with ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent.
Described ultra-high molecular weight polyethylene powder is the polyethylene of weight average molecular weight 1,000,000～1,100 ten thousand, is preferably molecular weight and is 250～4,000,000 polyethylene, and preferred particle diameter is 70 μ m～80 μ m.Ultra-high molecular weight polyethylene can obtain from domestic production producer, and the product of M-I type (molecular weight is 150 ± 500,000), M-II type (molecular weight is 250 ± 500,000), M-III type (molecular weight is 350 ± 500,000), M-IV type specifications such as (molecular weight are greater than 4,000,000) can be provided as Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be.An effect of ultra-high molecular weight polyethylene is bonding and the effect that forms the filter medium skeleton, because the molecular weight of ultra-high molecular weight polyethylene is big, melt viscosity is very high, fusion can not be flowed later, so utilize ultra-high molecular weight polyethylene to pass through compacting, the filter medium that sintering obtains forms micropore easily, can play the effect of 17 α in the adsorbed water-female ethylene glycol of acetenyl.
Activated carbon is a kind of porous material, and it has as cellular pore structure, and huge specific area, special surface functional group, stable physics and chemical property can efficiently be adsorbed organic matter, heavy metal, heterochromatic peculiar smell in the drinking-water.According to the raw material sources difference, activated carbon can be divided into wooden activated carbon, the activated carbon that mineral matter activated carbon and other raw materials are made.Wherein higher with wooden activated carbon intensity, absorption property is better.Especially wooden medicinal active carbon, as the product by the relevant drug surveilance standard of country, impurity content is lower, specific area is bigger, mesopore and micropore prosperity, adsorption effect is also better, and is good especially to the absorption of color and smell, selects for use wooden medicinal active carbon can guarantee that filter medium is directly used in the processing of drinking water.The specific area of preferred medicinal active carbon is not less than 500 meters squared per gram, more preferably is not less than 1000 meters squared per gram.The particle diameter of described wooden medicinal active carbon dust is preferably 60 μ m～79 μ m, more preferably 65 μ m～75 μ m.
NaY type molecular sieve is a kind of alkali metal aluminosilicate that has the sodium salt of y-type structure, and molecular sieve has by SiO
4And AlO
4The space muscle power structure that tetrahedral structural unit is formed, its female ethylene glycol of 17 α-acetenyl in can adsorbed water.Described NaY type molecular sieve has the micropore of 1～2nm, and preferred aperture is 1.5～1.8nm.Owing to have micropore in the NaY type molecular sieve, therefore, NaY type molecular sieve can with than the little Molecular Adsorption of micropore canals diameter to micropore, and than the big molecular repulsion of micropore canals diameter outside, thereby the molecule that the shape diameter is different, the different molecule molecular separation different with degree of saturation of molecule, boiling point that polarity degree is different come out.
Described method for preparing modified bentonite is: natural montmorillonite is added water stir into slurry, add in the slurry and contain Al
3+Or Fe
3+The cation soluble-salt, the addition of soluble-salt be in the slurry natural montmorillonite 1～4%.Contain Al
3+Or Fe
3+The hydrolysis of cation soluble-salt produce the metal hydroxy cation, the metal hydroxy cation substitutes natural montmorillonite sheet interlayer can be for the Na of exchange
+, K
+Or Ca
2+Deng cation, unit synusia bridging and strut, form " layer column " structure of a kind of two-dimensional channel, obtaining interlamellar spacing is the crosslinked modified alta-mud of 5～8nm.The surface area of described modified alta-mud reaches 250m
2More than/the g, adsorption capacity increases, and especially to quoting the female ethylene glycol of 17 α in the water-acetenyl very strong adsorption capacity is arranged.The addition of described soluble-salt is 1～4wt% of natural montmorillonite.The particle diameter of described modified alta-mud is preferably 50～74 μ m, more preferably 60～70 μ m.
Described mesopore molecular sieve be the aperture between the molecular sieve of 2～50nm, preferred aperture is 10～40nm.Described mesopore molecular sieve aperture is between micropore and macropore, have huge surface area and three-dimensional open-framework, the pore passage structure high-sequential, the single distribution in aperture, aperture size can change in relative broad range, have excellent absorption property and higher heat endurance, the female ethylene glycol of 17 α-acetenyl that remains in the water is had the good adsorption effect.
After NaY type molecular sieve, modified alta-mud and mesopore molecular sieve mix, multiple duct is interlaced, form and interact, be conducive to the absorption of 17 α-female ethylene glycol of acetenyl, especially behind three and other 3 kinds of raw material sintering, form crosslinked network structure, more be conducive to remove the female ethylene glycol of 17 α-acetenyl.
Gas generation agent of the present invention is that a class is easily decomposed a large amount of gases of generation and caused a material of sending out the hole effect, and wherein azo compound, sodium acid carbonate, carbonic hydroammonium, ammonium carbonate, sulphonyl nitrile compounds, oxalic acid etc. are its typical representatives.As preferably, gas generation agent is at least a in Celogen Az, food-grade carbonic hydroammonium, the oxalic acid.Wherein, food-grade carbonic hydroammonium also claims AMMONIUM BICARBONATE FOOD GRADE, distinguishes mutually with technical grade carbonic hydroammonium.Though technical grade carbonic hydroammonium also has the effect of sending out the hole, it may contain the impurity of insalubrity, should not be as the raw materials for production of drinking water filter medium.
In the present invention, at first described 6 kinds of raw materials are mixed, the weight ratio of described ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent is (35～45): (25～35): (5～15): (15～25): (5～15): (5～15) are preferably (37～42): (28～33): (7～12): (17～22): (7～12): (7～12).For blend step, can think that any low shear mixer or agitator that can significantly not change diameter of particle and size distribution all is suitable for, such as the agitator with blunt impeller blade, drum-type blender, spiral agitator etc., rotating speed will be decided on the type of blender, but is advisable with the dust of avoiding kicking up.
After obtaining mixture, with the compacting in mould of described mixture, sintering, cooling, can obtain filter medium.Described mixing back thing is filled in the pre-designed mould, and with its compacting, pressure generally is not more than 2MPa by pressurization, and adapts with the material of mould therefor; Mould can be by aluminium, cast iron, steel or any suitable material manufacturing that can bear relevant pressure and temperature.Can be in the mould inner surface release agent application, that can select silicone oil or any other for use can be adsorbed onto commercially available releasing agent on the filter medium hardly, also can use processing release paper.The temperature of described sintering is 230～240 ℃, is preferably 235～238 ℃, and the time of described sintering is 90～120 minutes, is preferably 100～110 minutes.
In the present invention, after NaY type molecular sieve, modified alta-mud and mesopore molecular sieve mix, multiple duct is interlaced, form and interact, after being conducive to absorption, the especially three and other 3 kinds of raw material sintering of 17 α-female ethylene glycol of acetenyl, has collaborative adduction, form crosslinked network structure, more be conducive to remove the female ethylene glycol of 17 α-acetenyl.
Adopt described filter medium that the drinking water that contains 17 α-female ethylene glycol of acetenyl is handled, the result shows that filter medium of the present invention reaches 95%～99% for the clearance of 17 α-female ethylene glycol of acetenyl.
The invention discloses the filter medium that is used for removing drinking water 17 α-female ethylene glycol of acetenyl that the described preparation method of a kind of technique scheme obtains.
The present invention also provides following technical scheme: the filter core of 17 α-female ethylene glycol of acetenyl in a kind of removal drinking water that is made of above-mentioned filter medium.The present invention does not have particular restriction to the method for preparing filter core, gets final product according to mode well known to those skilled in the art.
The present invention also provides following technical scheme: a kind of purifier comprises above-mentioned filter medium or filter core.
The present invention also provides a kind of water dispenser that comprises above-mentioned purifier.
In order further to understand the present invention, describe for filter medium of removing drinking water 17 α-female ethylene glycol of acetenyl and preparation method thereof provided by the invention below in conjunction with embodiment, protection scope of the present invention is not limited by the following examples.
Embodiment 1
(1) take by weighing ultra-high molecular weight polyethylene powder 350g, described ultra-high molecular weight polyethylene is the M-II type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 2,500,000;
(2) take by weighing wooden medicinal active carbon dust 250g, the particle diameter of described wooden medicinal active carbon is 74 μ m～80 μ m;
(3) take by weighing NaY type molecular sieve 50g, described NaY type molecular sieve is that the aperture that Qingdao Hui Zhi Chemical Industry Science Co., Ltd produces is the product of 1.5～1.8nm;
(4) take by weighing mesopore molecular sieve 50g, described mesopore molecular sieve is the product of 10～40nm for the aperture that pioneer's nanometer Co., Ltd offers;
(5) natural montmorillonite is added water and stir into slurry, in slurry, add ferric trichloride, the addition of ferric trichloride is the 1wt% of natural montmorillonite weight, stirred slurry 10 hours, then slurries filtration is come out, dry, pulverize the modified alta-mud that obtains particle diameter 60～74 μ m, take by weighing this modified alta-mud 150g;
(6) take by weighing food-grade carbonic hydroammonium 50g, purity reaches more than 99.99%;
(7) above-mentioned 6 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(8) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.8MPa, suppress, 230 ℃ of sintering temperatures 120 minutes;
(9) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Embodiment 2
(1) take by weighing ultra-high molecular weight polyethylene powder 370g, described ultra-high molecular weight polyethylene is the M-II type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 3,000,000;
(2) take by weighing wooden medicinal active carbon dust 270g, the particle diameter of described wooden medicinal active carbon is 78 μ m～80 μ m;
(3) take by weighing NaY type molecular sieve 70g, described NaY type molecular sieve is that the aperture that Qingdao Hui Zhi Chemical Industry Science Co., Ltd produces is the product of 1.5～1.8nm;
(4) take by weighing mesopore molecular sieve 70g, described mesopore molecular sieve is the product of 10～40nm for the aperture that pioneer's nanometer Co., Ltd offers;
(5) natural montmorillonite is added water and stir into slurry, in slurry, add aluminium chloride, the addition of aluminium chloride is the 2wt% of natural montmorillonite weight, stirred slurry 10 hours, then slurries filtration is come out, dry, pulverize the modified alta-mud that obtains particle diameter 60～74 μ m, take by weighing this modified alta-mud 170g;
(6) take by weighing food-grade carbonic hydroammonium 80g, purity reaches more than 99.99%;
(7) above-mentioned 6 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(8) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.7MPa, suppress, 233 ℃ of sintering temperatures 110 minutes;
(9) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Embodiment 3
(1) take by weighing ultra-high molecular weight polyethylene powder 400g, described ultra-high molecular weight polyethylene is the M-III type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 3,500,000;
(2) take by weighing wooden medicinal active carbon dust 300g, the particle diameter of described wooden medicinal active carbon is 75 μ m～85 μ m;
(3) take by weighing NaY type molecular sieve 100g, described NaY type molecular sieve is that the aperture that Qingdao Hui Zhi Chemical Industry Science Co., Ltd produces is the product of 1.5～1.8nm;
(4) take by weighing mesopore molecular sieve 100g, described mesopore molecular sieve is the product of 10～40nm for the aperture that pioneer's nanometer Co., Ltd offers;
(5) natural montmorillonite is added water and stir into slurry, in slurry, add ferric trichloride, the addition of ferric trichloride is the 3wt% of natural montmorillonite weight, stirred slurry 10 hours, then slurries filtration is come out, dry, pulverize the modified alta-mud that obtains particle diameter 60～74 μ m, take by weighing this modified alta-mud 200g;
(6) take by weighing Celogen Az 100g, purity reaches more than 99.99%;
(7) above-mentioned 6 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(8) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.6MPa, suppress, 235 ℃ of sintering temperatures 110 minutes;
(9) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Embodiment 4
(1) take by weighing ultra-high molecular weight polyethylene powder 420g, described ultra-high molecular weight polyethylene is the M-III type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,000,000;
(2) take by weighing wooden medicinal active carbon dust 320g, the particle diameter of described wooden medicinal active carbon is 74 μ m～89 μ m;
(3) take by weighing NaY type molecular sieve 120g, described NaY type molecular sieve is that the aperture that Qingdao Hui Zhi Chemical Industry Science Co., Ltd produces is the product of 1.5～1.8nm;
(4) take by weighing mesopore molecular sieve 120g, described mesopore molecular sieve is the product of 10～40nm for the aperture that pioneer's nanometer Co., Ltd offers;
(5) natural montmorillonite is added water and stir into slurry, in slurry, add aluminium chloride, the addition of aluminium chloride is the 4wt% of natural montmorillonite weight, stirred slurry 10 hours, then slurries filtration is come out, dry, pulverize the modified alta-mud that obtains particle diameter 60～74 μ m, take by weighing this modified alta-mud 220g;
(6) take by weighing oxalic acid 130g, purity reaches more than 99.99%;
(7) above-mentioned 6 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(8) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.6MPa, suppress, 240 ℃ of sintering temperatures 100 minutes;
(9) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Embodiment 5
Get the tubulose filter core 1 of the many minute apertures of embodiment 1～4 gained, 2,3,4, the liner two-layer nonwoven, the outsourcing two-layer nonwoven wraps polypropylene porous net at skin again, and bonding the going up in filter core two ends connects end cap, be positioned in stainless steel or the plastic casing, for the treatment of drinking water, after testing, this filter core is good to the removal effect of 17 α in the drinking water-female ethylene glycol of acetenyl.As shown in table 1, for adopting filter core that embodiment 1～4 provides to the female glycol content of 17 α-acetenyl before and after the drinking water treatment.
Table 1 uses the female ethylene glycol content of 17 α-acetenyl in the water of filter core processing front and back, unit: ng/L
As can be seen from Table 1, the female ethylene glycol of 17 α-acetenyl that utilizes filter core of the present invention to remove in the water has been obtained good effect, and clearance is 95%～99%.
Therefore filter core of the present invention is good to the removal effect of 17 α in the drinking water-female ethylene glycol of acetenyl, is fit to very much the needs of home terminal drinking water treatment.
Comparative example 1
(1) take by weighing ultra-high molecular weight polyethylene powder 420g, described ultra-high molecular weight polyethylene is the M-III type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,000,000;
(2) take by weighing wooden medicinal active carbon dust 320g, the particle diameter of described wooden medicinal active carbon is 74 μ m～89 μ m;
(3) take by weighing NaY type molecular sieve 120g, described NaY type molecular sieve is that the aperture that Qingdao Hui Zhi Chemical Industry Science Co., Ltd produces is the product of 1.5～1.8nm;
(4) take by weighing oxalic acid 130g, purity reaches more than 99.99%;
(5) above-mentioned 4 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(6) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.6MPa, suppress, 240 ℃ of sintering temperatures 100 minutes;
(7) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Comparative example 2
(1) take by weighing ultra-high molecular weight polyethylene powder 420g, described ultra-high molecular weight polyethylene is the M-III type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,000,000;
(2) take by weighing wooden medicinal active carbon dust 320g, the particle diameter of described wooden medicinal active carbon is 74 μ m～89 μ m;
(3) take by weighing mesopore molecular sieve 120g, described mesopore molecular sieve is the product of 10～40nm for the aperture that pioneer's nanometer Co., Ltd offers;
(4) take by weighing oxalic acid 130g, purity reaches more than 99.99%;
(5) above-mentioned 4 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(6) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.6MPa, suppress, 240 ℃ of sintering temperatures 100 minutes;
(7) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Comparative example 3
(1) take by weighing ultra-high molecular weight polyethylene powder 420g, described ultra-high molecular weight polyethylene is the M-III type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,000,000;
(2) take by weighing wooden medicinal active carbon dust 320g, the particle diameter of described wooden medicinal active carbon is 74 μ m～89 μ m;
(3) natural montmorillonite is added water and stir into slurry, in slurry, add aluminium chloride, the addition of aluminium chloride is the 4wt% of natural montmorillonite weight, stirred slurry 10 hours, then slurries filtration is come out, dry, pulverize the modified alta-mud that obtains particle diameter 60～74 μ m, take by weighing this modified alta-mud 220g;
(4) take by weighing oxalic acid 130g, purity reaches more than 99.99%;
(5) above-mentioned 4 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(6) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.6MPa, suppress, 240 ℃ of sintering temperatures 100 minutes;
(7) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Comparative example 4
(1) take by weighing ultra-high molecular weight polyethylene powder 420g, described ultra-high molecular weight polyethylene is the M-III type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,000,000;
(2) take by weighing wooden medicinal active carbon dust 320g, the particle diameter of described wooden medicinal active carbon is 74 μ m～89 μ m;
(3) take by weighing NaY type molecular sieve 120g, described NaY type molecular sieve is that the aperture that Qingdao Hui Zhi Chemical Industry Science Co., Ltd produces is the product of 1.5～1.8nm;
(4) take by weighing mesopore molecular sieve 120g, described mesopore molecular sieve is the product of 10～40nm for the aperture that pioneer's nanometer Co., Ltd offers;
(5) take by weighing oxalic acid 130g, purity reaches more than 99.99%;
(6) above-mentioned 5 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(7) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.6MPa, suppress, 240 ℃ of sintering temperatures 100 minutes;
(8) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Comparative example 5
(1) take by weighing ultra-high molecular weight polyethylene powder 420g, described ultra-high molecular weight polyethylene is the M-III type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,000,000;
(2) take by weighing wooden medicinal active carbon dust 320g, the particle diameter of described wooden medicinal active carbon is 74 μ m～89 μ m;
(3) take by weighing mesopore molecular sieve 120g, described mesopore molecular sieve is the product of 10～40nm for the aperture that pioneer's nanometer Co., Ltd offers;
(4) natural montmorillonite is added water and stir into slurry, in slurry, add aluminium chloride, the addition of aluminium chloride is the 4wt% of natural montmorillonite weight, stirred slurry 10 hours, then slurries filtration is come out, dry, pulverize the modified alta-mud that obtains particle diameter 60～74 μ m, take by weighing this modified alta-mud 220g;
(5) take by weighing oxalic acid 130g, purity reaches more than 99.99%;
(6) above-mentioned 5 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(7) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.6MPa, suppress, 240 ℃ of sintering temperatures 100 minutes;
(8) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Comparative example 6
(1) take by weighing ultra-high molecular weight polyethylene powder 420g, described ultra-high molecular weight polyethylene is the M-III type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,000,000;
(2) take by weighing wooden medicinal active carbon dust 320g, the particle diameter of described wooden medicinal active carbon is 74 μ m～89 μ m;
(3) take by weighing NaY type molecular sieve 120g, described NaY type molecular sieve is that the aperture that Qingdao Hui Zhi Chemical Industry Science Co., Ltd produces is the product of 1.5～1.8nm;
(4) natural montmorillonite is added water and stir into slurry, in slurry, add aluminium chloride, the addition of aluminium chloride is the 4wt% of natural montmorillonite weight, stirred slurry 10 hours, then slurries filtration is come out, dry, pulverize the modified alta-mud that obtains particle diameter 60～74 μ m, take by weighing this modified alta-mud 220g;
(5) take by weighing oxalic acid 130g, purity reaches more than 99.99%;
(6) above-mentioned 5 kinds of powder are put into the mechanical agitator stirring mixed in 10 minutes;
(7) mixed powder packing is gone in the tubular die, under the hydraulic pressure of 0.6MPa, suppress, 240 ℃ of sintering temperatures 100 minutes;
(8) naturally cool to 60 ℃ of demouldings then, namely get the tubulose filter core of many minute apertures.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Comparative example 7
Get the tubulose filter core 5,6,7 of the many minute apertures of comparative example 1～6 gained, 8,9,10, the liner two-layer nonwoven, the outsourcing two-layer nonwoven wraps polypropylene porous net at skin again, and bonding the going up in filter core two ends connects end cap, be positioned in stainless steel or the plastic casing, for the treatment of drinking water, after testing, this filter core is good to the removal effect of 17 α in the drinking water-female ethylene glycol of acetenyl.As shown in table 2, for adopting filter core that comparative example 1～6 provides to the female glycol content of 17 α-acetenyl before and after the drinking water treatment.
Table 2 uses the female ethylene glycol content of 17 α-acetenyl in the water of filter core processing front and back, unit: ng/L
The explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments herein.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a preparation method of filter medium that is used for removing drinking water 17 α-female ethylene glycol of acetenyl comprises the steps:
(A) ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent are mixed, obtain mixture;
The weight ratio of described ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent is (35～45): (25～35): (5～15): (15～25): (5～15): (5～15);
Described method for preparing modified bentonite is: natural montmorillonite is added water stir into slurry, add in the slurry and contain Al
3+Or Fe
3+The cation soluble-salt, the addition of soluble-salt is 1～4wt% of natural montmorillonite in the slurry;
(B) mixture of step (A) gained is suppressed sintering, cooling in mould;
The temperature of described sintering is 230～240 ℃, and the time of described sintering is 90～120 minutes.
2. preparation method according to claim 1, it is characterized in that the weight ratio of described ultra-high molecular weight polyethylene powder, wooden medicinal active carbon dust, NaY type molecular sieve, modified alta-mud, mesopore molecular sieve and gas generation agent is (37～42): (28～33): (7～12): (17～22): (7～12): (7～12).
3. according to claim 1 or 2 any described preparation methods, it is characterized in that the particle diameter of described wooden medicinal active carbon dust is 60 μ m～79 μ m.
4. according to claim 1 or 2 any described preparation methods, it is characterized in that the particle diameter of described ultra-high molecular weight polyethylene powder is 70 μ m～80 μ m.
5. according to claim 1 or 2 any described preparation methods, it is characterized in that the aperture of described NaY type molecular sieve is 1.5nm～1.8nm.
6. according to claim 1 or 2 any described preparation methods, it is characterized in that the particle diameter of described modified alta-mud is 50～74 μ m.
7. the filter medium that be used for to remove drinking water 17 α-female ethylene glycol of acetenyl that obtains according to each described preparation method in the claim 1 to 6.
8. a filter core is characterized in that, is made of the described filter medium of claim 7.
9. a purifier is characterized in that, comprises the described filter medium of claim 7 or the described filter core of claim 8.
10. a water dispenser is characterized in that, comprises the described purifier of claim 9.
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