CN104667633A - Filter medium for removing cadmium in drinking water, filter element and preparation method of filter medium - Google Patents
Filter medium for removing cadmium in drinking water, filter element and preparation method of filter medium Download PDFInfo
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Abstract
The invention provides a preparation method of a filter medium for removing cadmium in drinking water. The preparation method comprises the following steps: (a) mixing ultrahigh-macromolecule polyethylene powder, active carbon powder, zeolite powder, apatite powder and a pore forming agent to obtain a mixture, wherein the weight ratio of the ultrahigh-macromolecule polyethylene powder to the active carbon powder to the zeolite powder to the apatite powder to the pore forming agent is (200-300) to (50-100) to (100-200) to (50-100) to (50-100); and (b) pressing, sintering and cooling the mixture prepared in the step (a) in a mold in sequence, wherein the pressing pressure is 0.4MPa to 1MPa, the sintering temperature is 200 to 300 DEG C, the sintering time is 90 to 120min, and the cooling temperature is 40 to 60 DEG C. Under the synergistic effect of the raw materials, the prepared filter medium is high in removal rate on the cadmium in the water and the method is simple.
Description
Technical field
The present invention relates to and a kind ofly remove filter medium of cadmium 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
Cadmium is a kind of metal with silvery white or bit bluish gloss at normal temperatures, is the good rare metal of ductility and corrosion resistance.The anti-corrosion capability of cadmium to living beings and alkaline matter is very strong, through being usually used in the plating of the metals such as steel, iron, copper; Cadmium also can be used for manufacturing Ni-Cr battery; Its compound is used to produce fluorescent material and pigment in a large number; Be widely used in smelting, process hides, printing and dyeing and Chemical Manufacture.
A kind of more general pollutant in Ge Shi China water body, the toxicity of cadmium wastewater is very large, and the toxicity of compound of cadmium is larger, and easily enrichment in vivo, makes urinary system impaired, causes slow poisoning; In China's integrated wastewater discharge standard, clear stipulaties cadmium is first kind pollutant, and the highest permission concentration of emission is 0.1mg/L, cannot do dilution process.Cadmium is based on solubilised state in human body, and it can form aqua complex with multiple anion.In recent years, there is a series of cadmium pollution event in the ground such as China Hunan, Guangdong, brings threat to the living safety of the common people successively.
In the face of above-mentioned pollution, the treatment effect of traditional water treatment technology to cadmium is bad, effectively can not remove cadmium; Ion-exchange process is loaded down with trivial details, replace saturated after flushing water be difficult to process; Hyperfiltration uses trouble, water wasting expense electricity, and cost is high, and the concentrate of discharge not easily processes, and easily causes secondary pollution; And the precipitation method there will be the difficult problem of process equally.
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 cadmium 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 cadmium in drinking water, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is 200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100;
B) mixture of step a) gained is suppressed in a mold, sinters, cooled;
Described pressing pressure is 0.4MPa ~ 1Mpa; Described sintering temperature is 200 DEG C ~ 300 DEG C; Described sintering time is 90 ~ 120min; Described chilling temperature is 40 ~ 60 DEG C.
Preferably, described zeolite powder is the zeolite powder through softex kw modification.
Preferably, also comprise sepiolite powder, the weight ratio of described sepiolite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is 50 ~ 140:200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100.
Preferably, also light burnt powder is comprised.
Preferably, the weight ratio of described light burnt powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is 80 ~ 150:200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100.
The filter medium for removing cadmium 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 cadmium in drinking water, comprise the following steps: a) ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is 200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100; B) mixture of step a) gained is suppressed in a mold, sinters, cooled; Described pressing pressure is 0.4MPa ~ 1Mpa; Described sintering temperature is 200 DEG C ~ 300 DEG C; Described sintering time is 90 ~ 120min; Described chilling temperature is 40 ~ 60 DEG C.The present invention is under the synergy of above-mentioned raw materials, the filter medium prepared is high to the clearance of cadmium in water, method is simple, is applicable to the drinking water polluted by it, exempts the injury that element cadmium 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 cadmium in drinking water more than 98.6%.
Detailed description of the invention
The invention provides a kind of preparation method removing the filter medium of cadmium in drinking water, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is 200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100;
B) mixture of step a) gained is suppressed in a mold, sinters, cooled;
Described pressing pressure is 0.4MPa ~ 1Mpa; Described sintering temperature is 200 DEG C ~ 300 DEG C; Described sintering time is 90 ~ 120min; Described chilling temperature is 40 ~ 60 DEG C.
First ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats 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, zeolite powder, floats and gas generation agent is 200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100; Be preferably 210 ~ 290:60 ~ 90:120 ~ 180:60 ~ 90:60 ~ 90; Be more preferably 220 ~ 280:65 ~ 85:130 ~ 170:65 ~ 85:65 ~ 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 cadmium 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.The present invention preferably adopts particle diameter to be the medical activated carbon of 74 ~ 250 μm.
The present invention preferably carries out modification to described active carbon, is specially and adopts hexadecyltrimethylammonium chloride to do modifier and carry out modification to active carbon.For cadmium, there is good adsorption capacity through modified active carbon.
Zeolite is the general name of moisture polysilicate, its crystalline texture is mainly made up of silicon-oxy tetrahedron, wherein part tetravalence silicon ion is replaced by trivalent silicon ion, cause negative electrical charge superfluous, therefore the ion of alkali metal (or alkaline-earth metal) isoequilibrium electric charge is had in structure, there are vestibule and the duct of certain pore size simultaneously in zeolite framework, determine it and there is the character such as absorption, ion-exchange.In the present invention, zeolite powder is preferably past the zeolite powder of modification, be specially: by clean for natural zeolite washed with de-ionized water, dry, take the zeolite of certain mass, be immersed in certain density modifier, fully stir and be no less than two hours, filter after neutralization, clean by washed with de-ionized water, dry for standby.
Zeolite of the present invention is preferably clinoptilolite.The present invention preferably carries out modification to described clinoptilolite, and described modifier is preferably softex kw.Adopt modifier to be usually preferably no less than 2 hours to the time that zeolite carries out modification, be more preferably no less than 4 hours.
Through the zeolite of modification, impurity contained in mineral and DDGS can be removed, in mineral structure, etch abundant hole and vestibule, increase its surface area, thus improve the character such as absorption, ion-exchange of zeolite.Modified zeolite can improve the adsorption capacity to arsenic further by physical absorption and chemisorbed.The particle diameter of described zeolite is preferably 44 ~ 124 μm, is more preferably 54 ~ 114 μm.
The chemical formula of apatite is A
10[XO
4]
6z
2, the isomorph that can extensively occur in its crystal structure is replaced.In chemical formula, A is based on bivalent cation, mainly contains Ca
2+, Mn
2+, Sr
2+, Ba
2+, Pb
2+, Na
+, Cd
2+, Mg
2+, Fe
3+, Al
3+, Re
3+deng; [XO
4] comprise [PO
4]
3-, [SiO
4]
4-, [SO
4]
2-, [CO
3]
2-deng; And Z is F
-, OH
-, Cl
-deng.In structure, A position ion has two kinds of co-ordination positions, to be ligancy be respectively 9 position and ligancy be the position of 7, phosphorus oxygen tetrahedron is then coupled together by corner-sharing top or coplanar polyhedron.Polyhedron, around six neutral helical axis distribution, forms the structure channel of parallel C axle.According to passage intermediate ion F
-, OH
-, Cl
-relative amount can mark fluor-apatite, hydroxyapatite and chlorapatite.Because the valence link of ion two kinds of positions is different with radius.Therefore, bivalent cation enter generation regioselectivity and form orderly superstructure, the existence of two kinds of A positions simultaneously makes it have containment widely to the divalent metal of various radius.
Apatite is the primary non-organic component in the bone of vertebrate and the mankind, tooth.With drinking water enter human body every etc. heavy metal ion easily exchange with the calcium in the biogenic apatite in human body, thus the pathology of initiation sclerotin, tooth or human body.The present inventor finds that the inorganic ions lattice absorption of apatite and ion exchange are conducive to adsorbing the cadmium in drinking water.
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, zeolite powder, floats and gas generation agent, makes the clearance for the cadmium in drinking water high, effective jointly.
In the present invention, preferably also comprise light burnt powder, magnesite claims " light-burned " at 750-1100 DEG C of temperature lower calcination, and its product claims light-burning magnesium powder, referred to as light burnt powder.The weight ratio of described light burnt powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is preferably 80 ~ 150:200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100, is more preferably 90 ~ 130:220 ~ 280:60 ~ 90:120 ~ 180:60 ~ 90:60 ~ 90.
In the present invention, described light burnt powder and above-mentioned ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent can cooperatively interact and interact, and can significantly improve the clearance of the cadmium in drinking water, better effects if.
In the present invention, preferably also comprise sepiolite powder, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats, gas generation agent, sepiolite powder is preferably 50 ~ 140:200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100; Be more preferably 60 ~ 130:210 ~ 290:60 ~ 90:120 ~ 180:60 ~ 90:60 ~ 90; Most preferably be 70 ~ 120:220 ~ 280:65 ~ 85:130 ~ 170:65 ~ 85:65 ~ 85.
Sepiolite be a kind of tool layer chain structure containing Shuifu County's magnesium silicate clay mineral.Orthorhombic system or monoclinic system are general in bulk, earthy or fibrous agrregate.Sepiolite is divided into hot-liquid type sepiolite and appositional pattern sepiolite two type according to the reason of stroke, is commonly referred to α-sepiolite and β sepiolite.Hot-liquid type sepiolite is formed by hydrothermal solution direct crystallization or by volcanic glass, form through low temperature hot liquid alteration containing the mineral of magnesium, often originates in the dolomitic limestone of rich magnesium, dolomitic marble stone; Normal and the carbonate of appositional pattern sepiolite deposit, clay rock symbiosis, generated by diagenesis.Hot-liquid type sepiolite is fibre bundle shape, magnesia and dioxide-containing silica high, alumina content is low, is Mg-rich sepiolite; Appositional pattern sepiolite is argillaceous, but appoints under the microscope so in threadiness, and alumina content is high, Mg and dioxide-containing silica low, be rich meerschalminite.
Sepiolite has large specific area and pore volume, there are the passage and hole that run through total, and sepiolite surface exists three class activated centres: the oxygen atom in (1) silicon-oxy tetrahedron layer, oxygen atom provides weak electric charge thus carries out the absorption to adsorbate; (2) at the hydrone of edge and magnesium ion coordination, hydrogen bond can be formed with adsorbate; (3) at tetrahedral faces, Si-o-Si bond fission and the Si-OH ion cluster produced, carried out the electric charge of compensate for residual by a proton or polyhydroxylated molecule, these ion clusters are along fiber axis with the distribution of the spacing of 5 dusts, and its quantity depends on the size of fiber and the scarce cave of crystal.These Si-OH ion clusters with the interaction of molecules be attracted on sepiolite outer surface, can also form covalent bond with some organic reagent.These activated centres make the absorption property of sepiolite fine, comprise the organic compound adsorbing nonpolar or low pole.
In the present invention, preferably use particle diameter is the sepiolite powder of 18 ~ 150 μm, more preferably uses 18 ~ 100 μm.The sepiolite powder specific area that wherein particle diameter is little is large, more easily plays suction-operated.
The present invention preferably by described sepiolite powder activation process, more preferably through acid activation.Be specially: working concentration be 0.1 ~ 20% sulfuric acid be 20 ~ 100 DEG C of immersion treatment 1 ~ 15h in temperature.
In the present invention, by above-mentioned ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats, gas generation agent, the cooperatively interacting and interacting of sepiolite powder, jointly make the clearance for the cadmium in drinking water high, effective.And cooperatively interacting and interacting of above-mentioned substance and light burnt powder more can improve the clearance of cadmium 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 cadmium 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 0.4MPa ~ 1Mpa, is more preferably 0.5MPa ~ 0.9Mpa; And adapt 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 ~ 280 DEG C; Sintering time is preferably 90 minutes ~ 120 minutes, is more preferably 100 minutes ~ 110 minutes; 40 DEG C ~ 60 DEG C demouldings are cooled to after sintering.In this manufacturing process, after inventor's test many times, draw the filter medium produced in 220 DEG C ~ 280 DEG C in sintering range, filter effect is better.
Present invention also offers following technical scheme: the filter core of cadmium in a kind of removal 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 cadmium in water, method is simple, is applicable to the drinking water polluted by it, exempts the injury that element cadmium 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 cadmium in drinking water more than 98.6%.
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 cadmium provided by the invention.
Embodiment 1
(1) take the ultra-high molecular weight polyethylene powder 200g that particle diameter is 89 μm ~ 104 μm, 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 the medicinal active powdered carbon 50g that particle diameter is 100 μm, the specific area of described medical activated carbon is 800m
2/ g;
(3) floats 50g is taken;
(4) taking particle diameter is 90 μm of clinoptilolite 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 100 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 2
(1) take the ultra-high molecular weight polyethylene powder 250g that particle diameter is 89 μm ~ 104 μm, 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 the hexadecyltrimethylammonium chloride modification medicinal active powdered carbon 75g that particle diameter is 150 μm, the specific area of described medical activated carbon is 1500m
2/ g;
(3) floats 75g is taken;
(4) the clinoptilolite powder 150g that particle diameter is 80 μm of softex kw modifications is taken;
(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 250 DEG C of temperature, sinter 105 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 the ultra-high molecular weight polyethylene powder 300g that particle diameter is 89 μm ~ 104 μm, 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) taking particle diameter is 100 μm of medicinal active powdered carbon 100g, and the specific area of described medical activated carbon is 1200m
2/ g;
(3) floats 100g is taken;
(4) the clinoptilolite powder 200g that particle diameter is 100 μm of softex kw modifications is taken;
(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 230 DEG C of temperature, sinter 110 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 the ultra-high molecular weight polyethylene powder 250g that particle diameter is 89 μm ~ 104 μm, 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 the hexadecyltrimethylammonium chloride modification medicinal active powdered carbon 75g that particle diameter is 150 μm, the specific area of described medical activated carbon is 1500m
2/ g;
(3) floats 75g is taken;
(4) the clinoptilolite powder 150g that particle diameter is 80 μm of softex kw modifications is taken;
(5) gas generation agent 75g is taken;
(6) light burnt 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 0.6MPa, at 250 DEG C of temperature, sinter 105 minutes;
(9) 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 5
(1) take the ultra-high molecular weight polyethylene powder 250g that particle diameter is 89 μm ~ 104 μm, 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 the hexadecyltrimethylammonium chloride modification medicinal active powdered carbon 75g that particle diameter is 150 μm, the specific area of described medical activated carbon is 1500m
2/ g;
(3) floats 75g is taken;
(4) the clinoptilolite powder 150g that particle diameter is 80 μm of softex kw modifications is taken;
(5) gas generation agent 75g is taken;
(6) sepiolite powder 100g 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 0.6MPa, at 250 DEG C of temperature, sinter 105 minutes;
(9) 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 6
(1) take the ultra-high molecular weight polyethylene powder 250g that particle diameter is 89 μm ~ 104 μm, 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 the hexadecyltrimethylammonium chloride modification medicinal active powdered carbon 75g that particle diameter is 150 μm, the specific area of described medical activated carbon is 1500m
2/ g;
(3) floats 75g is taken;
(4) the clinoptilolite powder 150g that particle diameter is 80 μm of softex kw modifications is taken;
(5) gas generation agent 75g is taken;
(6) light burnt powder 120g is taken;
(7) sepiolite powder 100g is taken;
(8) above-mentioned seven 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 0.6MPa, at 250 DEG C of temperature, sinter 105 minutes;
(10) 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 1
(1) take the ultra-high molecular weight polyethylene powder 250g that particle diameter is 89 μm ~ 104 μm, 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) floats 75g is taken;
(3) the clinoptilolite powder 150g that particle diameter is 80 μm of softex kw modifications is taken;
(4) gas generation agent 75g is taken;
(5) above-mentioned four kinds of powder are put into spiral agitator stirring to mix for 10 minutes;
(6) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.6MPa, at 250 DEG C of temperature, sinter 105 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.
Comparative example 2
(1) take the ultra-high molecular weight polyethylene powder 250g that particle diameter is 89 μm ~ 104 μm, 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 the hexadecyltrimethylammonium chloride modification medicinal active powdered carbon 75g that particle diameter is 150 μm, the specific area of described medical activated carbon is 1500m
2/ g;
(3) the clinoptilolite powder 150g that particle diameter is 80 μm of softex kw modifications is taken;
(4) gas generation agent 75g is taken;
(5) above-mentioned four kinds of powder are put into spiral agitator stirring to mix for 10 minutes;
(6) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.6MPa, at 250 DEG C of temperature, sinter 105 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.
Comparative example 3
(1) take the ultra-high molecular weight polyethylene powder 250g that particle diameter is 89 μm ~ 104 μm, 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 the hexadecyltrimethylammonium chloride modification medicinal active powdered carbon 75g that particle diameter is 150 μm, the specific area of described medical activated carbon is 1500m
2/ g;
(3) floats 75g is taken;
(4) gas generation agent 75g is taken;
(5) above-mentioned four kinds of powder are put into spiral agitator stirring to mix for 10 minutes;
(6) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.6MPa, at 250 DEG C of temperature, sinter 105 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 cadmium 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 cadmium before and after drinking water treatment.
Table 1 uses the cadmium content before and after filter core process in water, unit: μ g/L
As can be seen from Table 1, the cadmium utilizing filter core of the present invention to remove in water achieves good effect, and clearance is more than 98.6%, and this filter core is applicable to the needs of home terminal drinking water treatment very much.
Above filter medium for removing cadmium in drinking water provided by the present invention and preparation method thereof and the filter core that is made up of this filter medium are described in detail.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 cadmium in drinking water, it is characterized in that, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is 200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100;
B) mixture of step a) gained is suppressed in a mold, sinters, cooled;
Described pressing pressure is 0.4MPa ~ 1Mpa; Described sintering temperature is 200 DEG C ~ 300 DEG C; Described sintering time is 90 ~ 120min; Described chilling temperature is 40 ~ 60 DEG C.
2. preparation method according to claim 1, is characterized in that, described zeolite powder is the zeolite powder through softex kw modification.
3. preparation method according to claim 1, it is characterized in that, also comprise sepiolite powder, the weight ratio of described sepiolite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is 50 ~ 140:200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100.
4. preparation method according to claim 1, is characterized in that, also comprises light burnt powder.
5. preparation method according to claim 4, it is characterized in that, the weight ratio of described light burnt powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, zeolite powder, floats and gas generation agent is 80 ~ 150:200 ~ 300:50 ~ 100:100 ~ 200:50 ~ 100:50 ~ 100.
6. the filter medium for removing cadmium 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.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694524A (en) * | 2017-10-30 | 2018-02-16 | 安徽铭能保温科技有限公司 | A kind of cadmium pollution adsorbent and preparation method thereof |
| CN113546602A (en) * | 2021-07-27 | 2021-10-26 | 中南大学 | (hydroxyl, chlorine) apatite/zeolite composite porous material and preparation method thereof |
| CN113941298A (en) * | 2021-10-22 | 2022-01-18 | 南昌大学 | Preparation method of novel eye photothermal treatment carrier |
| CN115475601A (en) * | 2021-11-15 | 2022-12-16 | 青岛海尔施特劳斯水设备有限公司 | Cadmium-removing sintered activated carbon rod, preparation method thereof and filter element |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382108A (en) * | 1999-08-25 | 2002-11-27 | 沃特维森斯国际公司 | Microbiological water filter |
| CN101310854A (en) * | 2008-02-22 | 2008-11-26 | 周奇迪 | Filter media and preparation method, filter element, purifier and drinking machine using the filter media |
| CN101343090A (en) * | 2008-08-22 | 2009-01-14 | 王德林 | Lanthanide series water treatment agent and method of preparing the same |
| CN101391109A (en) * | 2008-11-03 | 2009-03-25 | 赵溶 | Preparation method of compound air purification agent |
| CN101613135A (en) * | 2009-07-20 | 2009-12-30 | 中国农业科学院农业资源与农业区划研究所 | A kind of method of utilizing nanometer hydroxyapatite to remove heavy metal ion in the sewage |
| CN104028250A (en) * | 2014-06-24 | 2014-09-10 | 潘峰 | Filtering medium for removing aluminum in drinking water, filter element and method for preparing filtering medium |
-
2015
- 2015-01-29 CN CN201510047706.8A patent/CN104667633B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382108A (en) * | 1999-08-25 | 2002-11-27 | 沃特维森斯国际公司 | Microbiological water filter |
| CN101310854A (en) * | 2008-02-22 | 2008-11-26 | 周奇迪 | Filter media and preparation method, filter element, purifier and drinking machine using the filter media |
| CN101343090A (en) * | 2008-08-22 | 2009-01-14 | 王德林 | Lanthanide series water treatment agent and method of preparing the same |
| CN101391109A (en) * | 2008-11-03 | 2009-03-25 | 赵溶 | Preparation method of compound air purification agent |
| CN101613135A (en) * | 2009-07-20 | 2009-12-30 | 中国农业科学院农业资源与农业区划研究所 | A kind of method of utilizing nanometer hydroxyapatite to remove heavy metal ion in the sewage |
| CN104028250A (en) * | 2014-06-24 | 2014-09-10 | 潘峰 | Filtering medium for removing aluminum in drinking water, filter element and method for preparing filtering medium |
Non-Patent Citations (1)
| Title |
|---|
| 李欣欣，王萍，智文诗，龚玉荣: "用轻烧粉处理含氮含磷模拟废水研究", 《石化技术与应用》, vol. 30, no. 1, 31 January 2012 (2012-01-31) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694524A (en) * | 2017-10-30 | 2018-02-16 | 安徽铭能保温科技有限公司 | A kind of cadmium pollution adsorbent and preparation method thereof |
| CN113546602A (en) * | 2021-07-27 | 2021-10-26 | 中南大学 | (hydroxyl, chlorine) apatite/zeolite composite porous material and preparation method thereof |
| CN113546602B (en) * | 2021-07-27 | 2023-02-24 | 中南大学 | (hydroxyl, chlorine) apatite/zeolite composite porous material and preparation method thereof |
| CN113941298A (en) * | 2021-10-22 | 2022-01-18 | 南昌大学 | Preparation method of novel eye photothermal treatment carrier |
| CN115475601A (en) * | 2021-11-15 | 2022-12-16 | 青岛海尔施特劳斯水设备有限公司 | Cadmium-removing sintered activated carbon rod, preparation method thereof and filter element |
| CN115475601B (en) * | 2021-11-15 | 2023-08-15 | 青岛海尔施特劳斯水设备有限公司 | Cadmium-removing sintered active carbon rod, preparation method thereof and filter element |
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| CN104667633B (en) | 2017-02-22 |
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