CN104667635A - Filtering medium for removing organic chlorine from drinking water, filtering cylinder and preparation method of filtering medium - Google Patents
Filtering medium for removing organic chlorine from drinking water, filtering cylinder and preparation method of filtering medium Download PDFInfo
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Abstract
The invention provides a preparation method for a filtering medium for removing organic chlorine from drinking water. The preparation method comprises the following steps: (a) mixing polyethylene powder with an ultra-high molecular weight, active carbon powder, attapulgite powder, vermiculite powder and a perforating agent to obtain a mixture, wherein the weight ratio of the polyethylene powder with the ultra-high molecular weight, the active carbon powder, the attapulgite powder, the vermiculite powder and the perforating agent is (100-300):(50-100):(100-150):(100-150):(50-100); (b) pressing, sintering and cooling a mixture obtained in the step (a) in a die. Under the synergistic effect of the raw materials, the prepared filtering medium is high in removal rate to the organic chlorine in water, and the method is simple and is suitable for the polluted drinking water, so that injury, caused by the organic chlorine element, to a human body is avoided; the preparation method is easy and convenient to use and low in cost; furthermore, by use of a filtering cylinder instead of a powder body, subsequent treatment is not needed, and the preparation method is suitable for drinking water treatment of a household terminal.
Description
Technical field
The present invention relates to and a kind ofly remove filter medium of organochlorine 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
Organo-chlorine pesticide is the organic compound containing organochlorine element in the constituent for preventing and treating phytopathy, insect pest.Mainly be divided into benzene and be raw material and take cyclopentadiene as two large classes of raw material.Mainly comprise BHC, DDT, dieldrite, drinox, endrin, hexachloro-benzene, heptachlor, seven ammonia epoxies etc.China is the big country producing and use, and from the sixties in last century, production to nineteen eighty-three stops production.The sixties, the output of BHC was 68310 tons; The seventies, output was 171672 tons, the eighties output 241613 tons.
The source of water body Pesticides be mainly on the point-source pollution of insecticide factory, the water surface directly spray, the loss of farmland agricultural chemicals and air drift and Atmospheric precipitation etc.Such as organo-chlorine pesticide is after forbidding in 2008, and in the topsoil of Suburb of Guangzhou, organo-chlorine pesticide recall rate is 90.59%; The mouth of the Zhujiang River and Yangtze River Delta Region organochlorine from the nineties also significantly increases; Northeast Songhua River Basin is that the dicofol of raw material is only forbidden on vegetables at present with DDT, is still continuing to use crops such as grain, oil plant, cotton, sugar, fiber crops, cigarettes.
Savings in organo-chlorine pesticide carrier is very surprising.After DDT enters human body, only have an appointment and 1% to discharge through urine with original shape state, absorbed DDT about has 47% ~ 65% to find in chyle very soon.DDT transforms through liver and generates DDE in mammalian body, and it can put aside in vivo for a long time.Organo-chlorine pesticide can also be stored in the adipose tissue of fetus by placenta.BHC is mainly accumulated in adipose tissue, is secondly kidney, blood, liver brain.Just because of organo-chlorine pesticide is accumulated in vivo, be not easily decomposed or discharge external, certainly lead to toxic hazard.Organochlorine is Dexedrine, and time poisoning, the irritability of nervous centralis can obviously increase, and main portions is at brain motor area and cerebellum.DDT can also cause senile dementia.
The treatment effect of traditional water treatment technology to organochlorine is bad, effectively can not remove organochlorine; Bioanalysis and advanced oxidation processes are not suitable for terminal water treatment; 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 organochlorine 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 organochlorine in drinking water, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 100 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100;
B) mixture of step a) gained is suppressed in a mold, sinters, cooled.
Preferably, rectorite powder is also comprised.
Preferably, the weight ratio of described rectorite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 50 ~ 100:100 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100.
Preferably, also sepiolite powder is comprised.
Preferably, the weight ratio of described sepiolite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 80 ~ 150:100 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100.
The filter medium for removing organochlorine 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 organochlorine in drinking water, comprise the following steps: a) ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 100 ~ 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 organochlorine in water, method is simple, is applicable to the drinking water polluted by it, exempts the injury that element organochlorine 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 average removal rate of organochlorine in drinking water more than 99.3%.
Detailed description of the invention
The invention provides a kind of preparation method removing the filter medium of organochlorine in drinking water, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 100 ~ 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, concave convex rod stone flour, vermiculite power 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, concave convex rod stone flour, vermiculite power and gas generation agent is 100 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100; Be preferably 130 ~ 280:60 ~ 90:110 ~ 140:110 ~ 140:60 ~ 90; Be more preferably 150 ~ 250:75 ~ 85:120 ~ 130:115 ~ 135:75 ~ 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 organochlorine 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.
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 organochlorine, there is good adsorption capacity through modified active carbon.
In the present invention, described attapulgite is monoclinic system, and its desirable chemical formula is for being Mg
5(H
20)
4[Si
4o
10]
2(OH)
2, chemical composition theoretical value is MgO 23.83%, SiO
256.96%, H
2o19.21%; The attapulgite of occurring in nature often has Al
3+, Fe
3+deng isomorphous replacement, be rich in Al
3+, Fe
3+mutation is called aluminium attapulgite and iron attapulgite.As being called for MgO 12.10%, SiO of aluminium attapulgite of Xuyi County of Jiangsu Province Dragon King mountain products
258.38%, Al
2o
39.5%, CaO 0.4%, TiO
20.56%, MnO 0.05%, Fe
2o
3+ FeO 5.26%, Na
2o 1.1%, K
2o 1.24%.Because attapulgite is similar to the major path of zeolite powder in the structure, therefore there is good absorption and decoloration performance, have good absorption property to the organic and hydrogen sulfide decomposed etc., SiO in the absorption property of concave convex rod stone flour and mineral
2content relevant, content more high absorption capacity is stronger.
Concave-convex clay rod has chain layer structure, there is a series of crystal duct in crystal structure, and specific area is large, has very strong physical absorption ability.Due to isomorphous replacement in crystal, there is crystal defect and room, make attapulgite with aspect negative electrical charge, and rely on the cation of Inter layer adsorption to make charge balance.Because the cation of crystal Inter layer adsorption has interchangeability.Concave-convex clay rod has stronger ion-exchange absorption ability, and the absorption of heavy metal ion is mainly effective by above-mentioned adsorption mechanism.The present inventor finds, concave convex rod stone flour has the absorption of ion-exchange well ability to organochlorine.
In the present invention, preferably to concave convex rod stone flour through acid activation.The method of acid activation preferably includes sulfuric acid process, hydrochloric acid method, sulfuric acid-mixed in hydrochloric acid method.The present invention preferably uses the concave convex rod stone flour of hydrochloric acid activation modification, more preferably request for utilization number be 90105849.1 Chinese invention patent application disclose a kind of acid soak activating process of concave convex rod stone flour, comprise the volume moon 0.5 ~ 100cm of fritter
3attapulgite silty clay soil raw ore, soak 2 ~ 100 hours with the inorganic acid solution (as sulfuric acid, hydrochloric acid solution etc.) that concentration is 1 ~ 15wt%, filter extruding in flakes, at 280 DEG C ~ 350 DEG C, activate 30 ~ 50 minutes with revolving drier, the decolorizing ability being ground into 50 μm ~ 100 μm is the active attapulgite stone flour of 250 ± 5.
In the present invention, preferably, the particle diameter of concave convex rod stone flour after acid activation process is 74 μm ~ 104 μm, is more preferably 80 μm ~ 100 μm.The concave convex rod stone flour of acid activation process has larger specific area, and for multiple suction types such as outer surface absorption, colloid absorption and its inner surfaces of pores absorption, adsorption capacity is stronger.
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 organochlorine adsorbed in drinking water.The particle diameter of the preferred described vermiculite of the present invention is 44 ~ 74 μm.
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, by netted knot and the charge property of formation after above-mentioned ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent sintering, the suction-operated to organochlorine is enhanced.Cooperatively interacting and interacting by these five kinds of raw materials, makes the clearance for the organochlorine in drinking water high, effective jointly.
In the present invention, preferably also comprise rectorite powder, the weight ratio of described rectorite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 50 ~ 100:100 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100, is more preferably 60 ~ 90:120 ~ 280:60 ~ 90:110 ~ 140:110 ~ 140:60 ~ 90; Most preferably be 65 ~ 85:130 ~ 270:65 ~ 85:120 ~ 130:120 ~ 130:65 ~ 85.
Rectorite (K, Na)
x{ Al
2(Al
xsi
4-xo
10) (OH)
24H
2o, it is the 1:1 regularly interstratified mineral of dioctahedron mica and dioctahedron smectite composition, the place of production is different, its composition is slightly different, China Hubei (Zhongxiang City, Suixuan County, grand in, Nanzhang), there is such storage on Guangxi (moral fort), the ground such as Hunan, wherein, the rectorite found in Permian System In Zhongxiang, hubei rock have fairly large outside, various places rectorite mineral reserves is all very little.
According to the structural formula that the chemical composition of Zhongxiang City's rectorite calculates be:
Mica layer: (Na
0.79k
0.39ca
0.26)
1.14al
4[Si
6al
2]
8o
22
Montmorillonite layer: (Ca
0.55na
0.02k
0.01mg
0.03)
0.61(Al
4.1fe
2+ 0.09mg
0.07)
4.26[Si
6.46al
1.54]
8o
22
Rectorite has cation exchange, water swellability, slurrying etc. as montmorillonite; There is again the performance such as high temperature resistant and smooth as mica.Because the montmorillonite layer in rectorite crystal structure has a layer negative electrical charge, show electrode, can adsorb various inorganic ions, polar organic molecule and gas molecule.
In the present invention, described rectorite powder and above-mentioned ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent can cooperatively interact and interact, and can significantly improve the clearance of the organochlorine in drinking water, better effects if.
In the present invention, preferably also comprise sepiolite powder, the weight ratio of described sepiolite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is preferably 80 ~ 150:100 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100; Be more preferably 90 ~ 140:120 ~ 280:60 ~ 90:110 ~ 140:110 ~ 140:60 ~ 90; Most preferably be 100 ~ 130:130 ~ 270:65 ~ 85:120 ~ 130:120 ~ 130:65 ~ 85.
In the present invention, 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, concave convex rod stone flour, vermiculite power and gas generation agent, the cooperatively interacting and interacting of rectorite powder, jointly make the clearance for the organochlorine in drinking water high, effective.And cooperatively interacting and interacting of above-mentioned substance and sepiolite powder more can improve the clearance of organochlorine 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 organochlorine 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 220 DEG C ~ 250 DEG C, is more preferably 225 DEG C ~ 245 DEG C; Sintering time is preferably 100 minutes ~ 130 minutes, is more preferably 110 minutes ~ 125 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 ~ 240 DEG C in sintering range, filter effect is better.
Present invention also offers following technical scheme: the filter core of organochlorine 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 organochlorine in water, method is simple, is applicable to the drinking water polluted by it, exempts the injury that element organochlorine 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 average removal rate of organochlorine in drinking water more than 99.3%.
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 organochlorine provided by the invention.
Embodiment 1
(1) taking particle diameter is 89 μm ~ 104 μm ultra-high molecular weight polyethylene powder 100g, and 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 50g of 74 μm, and the specific area of described medical activated carbon is 800m
2/ g;
(3) taking particle diameter is 80 μm of acid activation concave convex rod stone flour 100g;
(4) taking particle diameter is 50 μm of vermiculite power 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 220 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 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 75g of 74 μm, and the specific area of described medical activated carbon is 1500m
2/ g;
(3) taking particle diameter is 90 μm of acid activation concave convex rod stone flour 120g;
(4) taking particle diameter is 60 μm of vermiculite power 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 230 DEG C of temperature, sinter 120 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 100g of 74 μm, and the specific area of described medical activated carbon is 1200m
2/ g;
(3) taking particle diameter is 100 μm of acid activation concave convex rod stone flour 150g;
(4) taking particle diameter is 70 μm of vermiculite power 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 240 DEG C of temperature, sinter 130 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) taking particle diameter is 89 μm ~ 104 μm ultra-high molecular weight polyethylene powder 100g, and 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 50g of 74 μm, and the specific area of described medical activated carbon is 800m
2/ g;
(3) taking particle diameter is 80 μm of acid activation concave convex rod stone flour 100g;
(4) taking particle diameter is 50 μm of vermiculite power 100g;
(5) gas generation agent 50g is taken;
(6) rectorite powder 75g is taken;
(7) above-mentioned six kinds of powder are put into mechanical agitator stirring to mix for 10 minutes;
(8) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.7MPa, at 220 DEG C of temperature, sinter 100 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) taking particle diameter is 89 μm ~ 104 μm ultra-high molecular weight polyethylene powder 100g, and 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 50g of 74 μm, and the specific area of described medical activated carbon is 800m
2/ g;
(3) taking particle diameter is 80 μm of acid activation concave convex rod stone flour 100g;
(4) taking particle diameter is 50 μm of vermiculite power 100g;
(5) gas generation agent 50g is taken;
(6) taking particle diameter is 70 μm of sepiolite powder 120g;
(7) above-mentioned six kinds of powder are put into mechanical agitator stirring to mix for 10 minutes;
(8) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.7MPa, at 220 DEG C of temperature, sinter 100 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) taking particle diameter is 89 μm ~ 104 μm ultra-high molecular weight polyethylene powder 100g, and 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 50g of 74 μm, and the specific area of described medical activated carbon is 800m
2/ g;
(3) taking particle diameter is 80 μm of acid activation concave convex rod stone flour 100g;
(4) taking particle diameter is 50 μm of vermiculite power 100g;
(5) gas generation agent 50g is taken;
(6) rectorite powder 75g is taken;
(7) taking particle diameter is 70 μm of sepiolite powder 120g;
(8) above-mentioned seven kinds of powder are put into mechanical agitator stirring to mix for 10 minutes;
(9) mixed powder packing is entered in tubular die, suppress under the hydraulic pressure of 0.7MPa, at 220 DEG C of temperature, sinter 100 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) taking particle diameter is 89 μm ~ 104 μm ultra-high molecular weight polyethylene powder 100g, and 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 50g of 74 μm, and the specific area of described medical activated carbon is 800m
2/ g;
(3) taking particle diameter is 50 μm of vermiculite power 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 220 DEG C of temperature, sinter 100 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) taking particle diameter is 89 μm ~ 104 μm ultra-high molecular weight polyethylene powder 100g, and 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 50g of 74 μm, and the specific area of described medical activated carbon is 800m
2/ g;
(3) taking particle diameter is 80 μm of acid activation concave convex rod stone flour 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 220 DEG C of temperature, sinter 100 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) taking particle diameter is 89 μm ~ 104 μm ultra-high molecular weight polyethylene powder 100g, and 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) particle diameter taking hexadecyltrimethylammonium chloride modification is the medical activated carbon 50g of 74 μm, and 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 220 DEG C of temperature, sinter 100 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.
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 organochlorine in drinking water.As shown in Table 1 and Table 2, table 1 and table 2 be respectively adopt enforcement 1 ~ 6 and comparative example 1 ~ 3 to provide filter core to the content of the organochlorine before and after drinking water treatment.
Table 1 embodiment 1 ~ 6 uses the content of organic chloride before and after filter core process in water, unit: μ g/L
As can be seen from Table 1, the organochlorine utilizing filter core of the present invention to remove in water achieves good effect, and average removal rate is more than 99.3%, and this filter core is applicable to the needs of home terminal drinking water treatment very much.
Table 2 comparative example 1 ~ 3 uses the content of organic chloride before and after filter core process in water, unit: μ g/L
Above filter medium for removing organochlorine 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 organochlorine in drinking water, it is characterized in that, comprise the following steps:
A) ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent are mixed, obtain mixture, the weight ratio of described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 100 ~ 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, also comprises rectorite powder.
3. preparation method according to claim 2, it is characterized in that, the weight ratio of described rectorite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 50 ~ 100:100 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100.
4. preparation method according to claim 1, is characterized in that, also comprises sepiolite powder.
5. preparation method according to claim 4, it is characterized in that, the weight ratio of described sepiolite powder and described ultra-high molecular weight polyethylene powder, activated carbon powder, concave convex rod stone flour, vermiculite power and gas generation agent is 80 ~ 150:100 ~ 300:50 ~ 100:100 ~ 150:100 ~ 150:50 ~ 100.
6. the filter medium for removing organochlorine 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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