CN104307256A - Filtering medium and filter element for removing sodium in drinking water and preparation method - Google Patents
Filtering medium and filter element for removing sodium in drinking water and preparation method Download PDFInfo
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- CN104307256A CN104307256A CN201410624396.7A CN201410624396A CN104307256A CN 104307256 A CN104307256 A CN 104307256A CN 201410624396 A CN201410624396 A CN 201410624396A CN 104307256 A CN104307256 A CN 104307256A
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Abstract
The invention provides a preparation method of a filtering medium for removing sodium in drinking water. The preparation method comprises the following steps: a), mixing ultra-high molecular weight polyethylene powder, activated carbon powder, cation exchange resin, zeolite molecular sieve powder and a pore forming agent so as to obtain a mixture, wherein the weight ratio of the ultra-high molecular weight polyethylene powder to the activated carbon powder to the cation exchange resin to the zeolite molecular sieve powder to the pore forming agent is (150-300): (50-100): (100-150): (100-150): (50-100); b) pressing, sintering and cooling the mixture obtained in the step a) in a mold. Under the synergistic effect of the raw materials, the prepared filtering medium is high in removal rate of sodium in water, simple in method, applicable to drinking water polluted by sodium, simple and convenient to use and low in cost, the damage to human bodies caused by too much sodium is avoided, and in addition, as a filter element rather than powder is adopted, the filtering medium needs no later treatment and is applicable to domestic terminal drinking water treatment.
Description
Technical field
The present invention relates to a kind of filter medium removing sodium in drinking water and preparation method thereof, the filter core be made up of this filter medium, water purifying plant and drinking Fountains.
Background technology
China has 53.2 ten thousand Industrial Boilers, 8000 multiple stage station boilers, and most Water purification have employed sodium ion exchange water softening, needs every year to be discharged into more than 2,000 ten thousand tons, underground salt.Using hydrochloric acid and NaOH as regenerative agent, regeneration liquid waste enters in neutralization pond, can be formed again much larger than more than 2,000 ten thousand tons of salt.China is often only heat supply heating and produces demineralized water, and with regard to having an appointment, the salt of more than 2,000 ten thousand tons enters underground.With Beijing, in order to heat supply in winter, from 1985, enter more than 20 ten thousand tons, underground salt every year.Before 1985, Pekinese's amount of salt in groundwater is about 200mg/L, and nineteen ninety just rises to 500mg/L, therefore, from 1985 so far, has entered the salt of underground more than 1,000,000,000 tons.And containing about 400 kilograms, sodium in salt per ton.
Over 30 years, along with the increase of sodium ion in the growth of salt content in water body and water body, unavoidably cause human body to the excess ingestion of sodium ion.And the incidence of disease that excess ingestion sodium ion can cause people to suffer from hypertension, heart disease and cancer increases, the physical and mental health of serious harm people.
At present, Na-ion exchanger is forbidden in Europe comprehensively, and U.S.'s major part state also have disabled Na-ion exchanger.And in China, but not relevant ban.Near big and medium-sized cities and thermal power plant, about hundred meters dark underground water all become bitter.The salt of underground water pollutes quite serious.
The treatment effect of traditional water treatment technology to sodium is bad, effectively can not remove sodium; Ion-exchange process is loaded down with trivial details, replace saturated after flushing water be difficult to process; Although nanofiltration and hyperfiltration effect are pretty good, use trouble, water wasting expense electricity, cost is high, and the concentrate of discharge not easily processes, and easily causes secondary pollution.
Summary of the invention
In view of this, the technical problem that the present invention solves is to provide a kind of filter medium and preparation method thereof, and the clearance of this filter medium to the sodium in drinking water is high, and method is simple.Additionally provide the filter core, purifier and the water dispenser that are made up of this filter medium.
The invention provides a kind of preparation method removing the filter medium of sodium in drinking water, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100;
B) mixture of step a) gained is suppressed in a mold, sinters, cooled.
Preferably, described zeolite molecular sieve powder is the zeolite molecular sieve powder through modification.
Preferably, also comprise montmorillonite powder, the weight ratio of described montmorillonite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 100 ~ 150:150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100.
Preferably, also vermiculite power is comprised.
Preferably, the weight ratio of described vermiculite power and described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 80 ~ 150:150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100.
The filter medium for removing sodium in drinking water that the preparation method that the invention provides according to the claims obtains.
The invention provides a kind of filter core, be made up of the filter medium described in the claims.
The invention provides a kind of purifier, comprise the filter medium described in the claims or the filter core described in the claims.
The invention provides a kind of water dispenser, comprise the purifier described in the claims.
Compared with prior art, the invention provides a kind of preparation method removing the filter medium of sodium in drinking water, comprise the following steps: a) ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100; B) mixture of step a) gained is suppressed in a mold, sinters, cooled.The present invention is under the synergy of above-mentioned raw materials, the filter medium prepared is high to the clearance of sodium in water, method is simple, is applicable to the drinking water polluted by it, exempts the injury that elements of Na crosses the generation of multipair human body, easy to use, cost is low, in addition owing to using filter core, is not powder, so without the need to subsequent treatment, be applicable to the process of home terminal drinking-water.After testing this filter medium to the clearance of sodium in drinking water more than 96.3%.
Detailed description of the invention
The invention provides a kind of preparation method removing the filter medium of sodium in drinking water, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100;
B) mixture of step a) gained is suppressed in a mold, sinters, cooled.
First ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent mix by the present invention, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100; Be preferably 160 ~ 280:60 ~ 90:110 ~ 140:110 ~ 140:60 ~ 90; Be more preferably 170 ~ 270:65 ~ 85:120 ~ 130:120 ~ 130:65 ~ 85.
In the present invention, the weight average molecular weight of described ultra-high molecular weight polyethylene is preferably 1,000,000 ~ 7,000,000, is more preferably 2,000,000 ~ 6,000,000, most preferably is 2,500,000 ~ 4,000,000.Preferred particle diameter is 89 μm ~ 104 μm.Ultra-high molecular weight polyethylene can obtain from domestic production producer, as Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be can provide 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 (molecular weight is for being greater than 4,000,000) equal-specification.An effect of ultra-high molecular weight polyethylene is bonding and the effect forming filter medium skeleton, because the molecular weight of ultra-high molecular weight polyethylene is large, melt viscosity is very high, can not flow after melting, so utilize ultra-high molecular weight polyethylene to pass through compacting, sinter the filter medium obtained, easily form micropore, the effect of sodium in adsorbed water can be played.
In the present invention, active carbon is a kind of porous material, has cellular pore structure, larger specific area, special surface functional group, stable process based prediction model, is excellent adsorbent, catalyst or catalyst carrier.According to the active carbon etc. that the different activities charcoal of raw material sources is preferably divided into wood activated charcoal, mineral raw material active carbon and other raw materials to make.Wherein, described wood activated charcoal preferably includes cocoanut active charcoal, apricot shell active carbon, wooden burgy; It is the active carbon that raw material is made that described mineral raw material active carbon preferably includes various coal and oil and elaboration products thereof; The active carbon that the active carbon that other raw materials are made preferably includes scrap rubber, waste plastics is made.The present invention preferably uses with the active carbon of coconut husk material for source, and its intensity is higher, absorption property good, is more preferably with the medical activated carbon of coconut husk material for source.In the present invention, the specific area of described active carbon is preferably not less than 500m
2/ g, is more preferably not less than 1000m
2/ g.Active carbon can organic matter, especially medical activated carbon efficiently in adsorbed water, as the product by excessively national relevant drug surveilance standard, impurity content is low, and surface area is larger, adsorption effect is also better, and filter medium is directly used in the process of drinking water to select medical activated carbon to ensure.In the present invention, preferably use particle diameter is the medical activated carbon of 74 ~ 84 μm.
Zeolite molecular sieve is the hydrate of crystalline alumino slaine, and its chemical general formula is Mx/m [(AlO
2) x (SiO
2) y] zH
2o.M represents cation, and m represents its valence state number, and z represents hydration number, x and y is integer.After zeolite molecular sieve activation, hydrone is removed, and remaining atom forms cage structure, and aperture is 3 ~ 10 & Aring; .It has structure and the feature of crystal, and surface is solid skeletal, and the effect of binding molecule can be played in inner hole.Have duct to be interconnected between hole, molecule is passed through by duct.Size according to its crystals hole carries out selective absorption to molecule, namely adsorbs a certain size molecule and repels the molecule of larger material, being thus called visually " molecular sieve ".Zeolite molecular sieve can be divided into aperture by its hole or channel system, mesopore and diplopore zeolite three groups.The aperture of pore zeolite belongs to octatomic ring system, and its maximum free diameter is 0.43nm.Preferred selection woods moral A (linde A), erionite (erionite), chabasie (chabazite), ZK-5, ZK-4, ZK-21, ZK-22.Mesopore zeolite belongs to ten-ring system, and its access portal occupy between less octatomic ring and larger twelve-ring, and maximum free diameter is 0.63nm.Be preferably laumontite (laumontite), ZSM-5, ZSM-12, ZSM-23, ZSM-48, ZSM-11.Diplopore mainly has two groups of pore structures, namely has the cross linking channels in ten binary and octatomic ring aperture or ten yuan and eight yuan apertures.Be preferably modenite, offretite (offretite), Lin De T, receives chabasie (gmelnite), heulandite (heulandite), or tiltedly method takes stone (clinoptilolite), ferrierite 9ferrierite), ZSM-35, ZSM-38, foresite z9stilbite), dachiardite z9dachiardite), epistilbite (epistilbite).
The preferred zeolite molecular sieve of the present invention is 13X zeolite molecular sieve, 4a zeolite molecular sieve or 5a zeolite molecular sieve.More preferably through the zeolite molecular sieve of modification, ammonium chloride can be used to carry out modification.Can think that ammonium chloride carries out the one in the 13X zeolite molecular sieve of modification, 4a zeolite molecular sieve or 5a zeolite molecular sieve.
Cationic ion-exchange resin of the present invention can be by force strong acidic ion resin, also can be acidulous cation resin.Concrete, strong acidic ion resin contains a large amount of strong acid groups, and as sulfonic group-SO3H, easily dissociation goes out H+ in the solution, therefore in highly acid.After resin dissociation, the negative electricity group contained by body, as SO3-, can adsorb other cations in binding soln.These two reactions make the H+ in resin and the cation in solution intercourse.The dissociating power of Se Kesaisi highly acidic resin very by force, all can dissociation and generation ion exchange in acidity or alkaline solution.Resin in use for some time, carry out regeneration process, namely with chemicals, ion-exchange reactions be carried out in the opposite direction, makes the functional group of resin reply original state, for reusing.Resin cation described above carries out regeneration process with strong acid, and now resin is released by the cation adsorbed, then is combined with H+ and recovers original composition.
Acidulous cation resin containing faintly acid group, as carboxyl-COOH, can go out H+ and in acid at dissociation in water.Negative electricity group remaining after Se Kesaisi resin dissociation, as R-COO-(R is hydrocarbon group), can be combined by other Cation adsorptions in solution, thus produces cation exchange effect.Acidity and the dissociative of this resin are more weak, are difficult to dissociation at a low ph and carry out ion-exchange, (as pH5 ~ 14) can only work in alkalescence, neutrality or slightly acidic solution.Se Kesaisi resin is also carry out regenerating (more easily regenerating than highly acidic resin) with acid.
The present invention does not limit for the concrete kind model of above-mentioned cationic ion-exchange resin, can be that styrene or acrylate synthesize, preferably commercially available.
Gas generation agent of the present invention is that a class is easily decomposed a large amount of gas of generation and causes the material of hair engaging aperture effect, and wherein azo compound, sodium acid carbonate, carbonic hydroammonium, ammonium carbonate, sulphonyl nitrile compounds, oxalic acid etc. are that it typically represents.As preferably, gas generation agent is at least one in Celogen Az, food grade ammonium bicarbonate, oxalic acid.Wherein, food grade ammonium bicarbonate also claims AMMONIUM BICARBONATE FOOD GRADE, distinguishes with technical grade carbonic hydroammonium.Although technical grade carbonic hydroammonium also has the effect of hair engaging aperture, it may contain the impurity of insalubrity, should not be used as the raw materials for production of Drinking Water Filtration medium.
In the present invention, cooperatively interacting and interacting by above-mentioned ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent, makes the clearance for the sodium in drinking water high, effective jointly.
In the present invention, preferably also comprise montmorillonite powder, the weight ratio of described montmorillonite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is preferably 100 ~ 150:150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100; Be more preferably 110 ~ 140:160 ~ 280:60 ~ 90:110 ~ 140:110 ~ 140:60 ~ 90; Most preferably be 170 ~ 270:65 ~ 85:120 ~ 130:120 ~ 130:65 ~ 85.
Montmorillonite (Montmorillonite) is the layer mineral be made up of the hydrous alumino silicates that particle is superfine, and title derives from the place of production first found--the Montmorillon of France.Montmorillonite subtribe belongs to one of smectite race (smectite) mineral (another subtribe is saponite saponite), is important clay mineral, is generally bulk or earthy.Molecular formula (Al, Mg) 2 [Si4O10] (OH) 2nH2O, centre is alumina octahedral, the clay mineral of the three-layer tablet shape structure formed for silicon-oxy tetrahedron up and down, moisture and some exchange cations at crystal structure interlayer, there is higher ion exchange capacity, there is higher imbibition ability.Montmorillonite Crystal belongs to monoclinic moisture layer silicate mineral.Montomorillonite powder of the present invention is selected from 180 ~ 200 object montomorillonite powder.Its structure belongs to layer structure, and through activation process, its laminated crystalline becomes comparatively loose superposition by original compact texture, thus its specific area is increased, and adsorption capacity increases.They are different from the poroid absorption of active carbon, and its layered adsorbent has better suction-operated for formaldehyde.The present invention preferably uses the montmorillonite powder through acid activation, acid activation method is: pulverized by montmorillonite, is the hydrochloric acid of 5wt% ~ 10wt% or sulfuric acid impregnation process 8 ~ 15 hours by concentration, through in sodium carbonate or caustic alkali and after washing, then dry, be crushed to required granularity.The particle diameter of the preferred montmorillonite powder of the present invention is 61 μm ~ 89 μm.
In the present invention, cooperatively interacting and interacting by above-mentioned ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder, gas generation agent and montmorillonite powder, makes the clearance for the sodium in drinking water high, effective jointly.
In the present invention, preferably also comprise vermiculite power, the weight ratio of vermiculite power and described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder, gas generation agent is 80 ~ 150:150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100; Be more preferably 90 ~ 140:160 ~ 280:60 ~ 90:110 ~ 140:110 ~ 140:60 ~ 90; Most preferably be 100 ~ 130:170 ~ 270:65 ~ 85:120 ~ 130:120 ~ 130:65 ~ 85.
In the present invention, vermiculite is a kind of natural, nontoxic mineral matter, can expand under high temperature action.Vermiculite power is powdered through high-temperature roasting, screening, attrition process by primary mineral of vermiculite.In vermiculite power particle, a lot of pore of oil-containing, has very large specific area, serves many purposes, can be used as construction material, fire-retardant insulating material etc.Inventor finds through creationary research, and vermiculite power has good effect for the formaldehyde adsorbed in drinking water.Preferably, the particle diameter of vermiculite power of the present invention is 44 μm ~ 74 μm.
In the present invention, by above-mentioned ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder, gas generation agent, the cooperatively interacting and interacting of vermiculite power, jointly make the clearance for the sodium in drinking water high, effective.And cooperatively interacting and interacting of above-mentioned substance and montmorillonite powder powder more can improve the clearance of sodium in water.
In the present invention, the source of above-mentioned raw materials and purity are not particularly limited, preferably commercially available.
The present invention for step in above-mentioned preparation method a) in several raw materials used carried out comparatively detailed description, under the collaborative adduction of this several raw material, the sodium in water can fully be adsorbed.
In the present invention, for the mixing of above-mentioned raw materials without any restriction, can be any low sheraing blender or agitator that significantly can not change diameter of particle and size distribution, can be preferably the agitator, drum-type blender, spiral agitator etc. of blunt impeller blade.Rotating speed for above-mentioned mixer and agitator depending on the type of blender, will not limit this, preferably avoids dust of kicking up.
After above-mentioned raw materials is mixed, the mixture of step a) gained is suppressed in a mold, sinters, cooled.
Be specially, be filled into by mixed powder in pre-designed mould, by pressurization by its compacting, pressure is preferably not more than 2MPa, is more preferably 0.5 ~ 1.5MPa, and adapts with the material of mould therefor; Mould can by aluminium, cast iron, steel or any material manufacture bearing relevant pressure and temperature suitably.In mould inner surface release agent application, can select silicone oil or any other the commercially available releasing agent be adsorbed onto hardly on filter medium, also can use processing release paper.Sintering temperature is preferably 200 DEG C ~ 300 DEG C, is more preferably 220 DEG C ~ 250 DEG C; Sintering time is 120 minutes ~ 150 minutes, is cooled to 40 DEG C ~ 60 DEG C demouldings after sintering.In this manufacturing process, after inventor's test many times, draw the filter medium produced in 220 DEG C ~ 250 DEG C in sintering range, filter effect is better.
Present invention also offers following technical scheme: a kind of filter core of the removal sodium in drinking water be made up of above-mentioned filter medium.
Present invention also offers following technical scheme: a kind of purifier, comprise above-mentioned filter medium or filter core.
Present invention also offers a kind of water dispenser comprising above-mentioned purifier.
The present invention is under the synergy of above-mentioned raw materials, the filter medium prepared is high to the clearance of sodium in water, method is simple, is applicable to the drinking water polluted by it, exempts the injury that elements of Na produces human body, easy to use, cost is low, in addition owing to using filter core, is not powder, so without the need to subsequent treatment, be applicable to the process of home terminal drinking-water.After testing this filter medium to the clearance of sodium in drinking water more than 96.3%.
In order to further illustrate the present invention, be described in detail below in conjunction with the filter medium of embodiment to removal drinking water sodium provided by the invention.
Embodiment 1
(1) take ultra-high molecular weight polyethylene powder 150g, described ultra-high molecular weight polyethylene is the M-I type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 1,500,000;
(2) take medicinal active powdered carbon 50g, the specific area of described medical activated carbon is 800m
2/ g;
(3) strong-acid cation-exchange resin 100g is taken;
(4) 13X zeolite molecular sieve powder 100g;
(5) gas generation agent 50g is taken;
(6) above-mentioned five kinds of powder are put into mechanical agitator stirring to mix for 10 minutes;
(7) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.7MPa, at 260 DEG C of temperature, sinter 120 minutes;
(8) naturally cool to 50 DEG C and then use the demoulding of silicone oil releasing agent, obtain filter core.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Embodiment 2
(1) take ultra-high molecular weight polyethylene powder 200g, 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 medicinal active powdered carbon 75g, the specific area of described medical activated carbon is 1500m
2/ g;
(3) Weak-acid cation exchange resin 120g is taken;
(4) ammonium chloride 4a zeolite molecular sieve powder 120g;
(5) gas generation agent 75g is taken;
(6) above-mentioned five kinds of powder are put into spiral agitator stirring to mix for 10 minutes;
(7) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.6MPa, at 280 DEG C of temperature, sinter 130 minutes;
(8) naturally cool to 50 DEG C and then use the demoulding of siloxanes uranium releasing agent, obtain filter core.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Embodiment 3
(1) take ultra-high molecular weight polyethylene powder 300g, described ultra-high molecular weight polyethylene is the M-IV type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,500,000;
(2) take medicinal active powdered carbon 100g, the specific area of described medical activated carbon is 1200m
2/ g;
(3) strong-acid cation-exchange resin 150g is taken;
(4) 13X zeolite molecular sieve powder 150g;
(5) gas generation agent 100g is taken;
(6) above-mentioned five kinds of powder are put into spiral agitator stirring to mix for 10 minutes;
(7) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.9MPa, at 220 DEG C of temperature, sinter 150 minutes;
(8) naturally cool to 40 DEG C and then use the release paper demoulding, obtain filter core.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Embodiment 4
(1) take ultra-high molecular weight polyethylene powder 300g, described ultra-high molecular weight polyethylene is the M-IV type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,500,000;
(2) take medicinal active powdered carbon 100g, the specific area of described medical activated carbon is 1200m
2/ g;
(3) strong-acid cation-exchange resin 150g is taken;
(4) 13X zeolite molecular sieve powder 150g;
(5) gas generation agent 100g is taken;
(6) acid activation montmorillonite powder 120g is taken;
(7) above-mentioned six kinds of powder are put into spiral agitator stirring to mix for 10 minutes;
(8) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.9MPa, at 220 DEG C of temperature, sinter 150 minutes;
(9) naturally cool to 40 DEG C and then use the release paper demoulding, obtain filter core.
Embodiment 5
(1) take ultra-high molecular weight polyethylene powder 300g, described ultra-high molecular weight polyethylene is the M-IV type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,500,000;
(2) take medicinal active powdered carbon 100g, the specific area of described medical activated carbon is 1200m
2/ g;
(3) strong-acid cation-exchange resin 150g is taken;
(4) 13X zeolite molecular sieve powder 150g;
(5) gas generation agent 100g is taken;
(6) vermiculite power 120g is taken;
(7) above-mentioned six kinds of powder are put into spiral agitator stirring to mix for 10 minutes;
(8) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.9MPa, at 220 DEG C of temperature, sinter 150 minutes;
(9) naturally cool to 40 DEG C and then use the release paper demoulding, obtain filter core.
Embodiment 6
(1) take ultra-high molecular weight polyethylene powder 300g, described ultra-high molecular weight polyethylene is the M-IV type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 4,500,000;
(2) take medicinal active powdered carbon 100g, the specific area of described medical activated carbon is 1200m
2/ g;
(3) strong-acid cation-exchange resin 150g is taken;
(4) 13X zeolite molecular sieve powder 150g;
(5) gas generation agent 100g is taken;
(6) vermiculite power 120g is taken;
(7) montmorillonite powder 120g is taken;
(8) above-mentioned seven kinds of powder are put into spiral agitator stirring to mix for 10 minutes;
(9) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.9MPa, at 220 DEG C of temperature, sinter 150 minutes;
(10) naturally cool to 40 DEG C and then use the release paper demoulding, obtain filter core.
Comparative example 1
(1) take ultra-high molecular weight polyethylene powder 150g, described ultra-high molecular weight polyethylene is the M-I type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 1,500,000;
(2) take medicinal active powdered carbon 50g, the specific area of described medical activated carbon is 800m
2/ g;
(3) gas generation agent 50g is taken;
(4) above-mentioned three kinds of powder are put into mechanical agitator stirring to mix for 10 minutes;
(5) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.7MPa, at 260 DEG C of temperature, sinter 120 minutes;
(6) naturally cool to 50 DEG C and then use the demoulding of siloxanes uranium releasing agent, obtain filter core.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Comparative example 2
(1) take ultra-high molecular weight polyethylene powder 100g, described ultra-high molecular weight polyethylene is the M-I type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 1,500,000;
(2) take medicinal active powdered carbon 50g, the specific area of described medical activated carbon is 800m
2/ g;
(3) 13X zeolite molecular sieve powder 100g is taken;
(4) above-mentioned three kinds of powder are put into mechanical agitator stirring to mix for 10 minutes;
(5) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.7MPa, at 260 DEG C of temperature, sinter 120 minutes;
(6) naturally cool to 50 DEG C and then use the demoulding of siloxanes uranium releasing agent, obtain filter core.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Comparative example 3
(1) take ultra-high molecular weight polyethylene powder 100g, described ultra-high molecular weight polyethylene is the M-I type product of Second Factory of Auxiliary Agent of Orient Petrochemical Industry Co., Ltd., Be, and its molecular weight is 1,500,000;
(2) take medicinal active powdered carbon 50g, the specific area of described medical activated carbon is 800m
2/ g;
(3) 13X zeolite molecular sieve powder 100g;
(4) gas generation agent 50g is taken;
(5) above-mentioned four kinds of powder are put into mechanical agitator stirring to mix for 10 minutes;
(6) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.7MPa, at 260 DEG C of temperature, sinter 120 minutes;
(7) naturally cool to 50 DEG C and then use the demoulding of siloxanes uranium releasing agent, obtain filter core.
The diameter of the filter core of preparation is 50mm, and length is 200mm.
Embodiment 7
The filter core of Example 1 ~ 6 and comparative example 1 ~ 3 gained, liner two-layer nonwoven, outsourcing two-layer nonwoven, polypropylene porous web is wrapped again at skin, the bonding upper connection end cap in filter core two ends, is positioned in stainless steel or plastic casing, for the treatment of drinking water, after testing, this filter core is good to the removal effect of the sodium in drinking water.As shown in table 1, the filter core provided for adopting enforcement 1 ~ 6 and comparative example 1 ~ 3 is to the content of the sodium before and after drinking water treatment.
Table 1 uses the sodium content before and after filter core process in water, unit: mg/L
As can be seen from Table 1, the sodium utilizing filter core of the present invention to remove in water achieves good effect, and clearance is more than 96.3%, and this filter core is applicable to the needs of home terminal drinking water treatment very much.
Be described in detail for filter medium removing sodium in drinking water and preparation method thereof and the filter core that is made up of this filter medium provided by the present invention above.The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. remove a preparation method for the filter medium of sodium in drinking water, it is characterized in that, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100;
B) mixture of step a) gained is suppressed in a mold, sinters, cooled.
2. preparation method according to claim 1, is characterized in that, described zeolite molecular sieve powder is the zeolite molecular sieve powder through modification.
3. preparation method according to claim 1, it is characterized in that, also comprise montmorillonite powder, the weight ratio of described montmorillonite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 100 ~ 150:150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100.
4. preparation method according to claim 1, is characterized in that, also comprises vermiculite power.
5. preparation method according to claim 4, it is characterized in that, the weight ratio of described vermiculite power and described ultra-high molecular weight polyethylene powder, activated carbon powder, cationic ion-exchange resin, zeolite molecular sieve powder and gas generation agent is 80 ~ 150:150 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100.
6. the filter medium for removing sodium in drinking water that obtains of preparation method according to any one of claim 1 to 5.
7. a filter core, is characterized in that, is made up of filter medium according to claim 6.
8. a purifier, is characterized in that, comprises filter medium according to claim 6 or filter core according to claim 7.
9. a water dispenser, is characterized in that, comprises purifier according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410624396.7A CN104307256B (en) | 2014-11-07 | For removing the filter medium of sodium in drinking water, filter element and preparation method |
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| CN201410624396.7A CN104307256B (en) | 2014-11-07 | For removing the filter medium of sodium in drinking water, filter element and preparation method |
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| CN104307256A true CN104307256A (en) | 2015-01-28 |
| CN104307256B CN104307256B (en) | 2017-01-04 |
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