CN102527155A - Structural filter element for removing acraldehyde from drinking water and preparation method of structural filter element - Google Patents
Structural filter element for removing acraldehyde from drinking water and preparation method of structural filter element Download PDFInfo
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- CN102527155A CN102527155A CN2011103207753A CN201110320775A CN102527155A CN 102527155 A CN102527155 A CN 102527155A CN 2011103207753 A CN2011103207753 A CN 2011103207753A CN 201110320775 A CN201110320775 A CN 201110320775A CN 102527155 A CN102527155 A CN 102527155A
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- methacrylaldehyde
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Abstract
The invention discloses a structural filter element for removing acraldehyde from drinking water and a preparation method of the structural filter element and belongs to the technical field of purifying and treating drinking water. The filter element is prepared by mixing and sintering polytetrafluoroethylene with ultrahigh molecular weight, bentonite, modified sepiolite powder, anion exchange resin and foaming agent. The preparation method comprises the following specific steps of: weighing the raw materials according to proportion and mixing and uniformly stirring the raw materials; adding an anionic surfactant into the pasty mixture according to the proportion of 0.1 to 0.5g/kg; after stirring for 20 to 30 minutes, adding the mixture into a honeycombed mold to be pressed; and after sintering the mixture for 200 to 300 minutes at the high temperature of 250 to 350 DEG C, cooling the product to demold, thus obtaining the filter element with a porous honeycombed structure. The high-molecular material and the absorbing material are perfectly combined by the structural filter element disclosed by the invention, so the filter element can effectively remove impurities, such as heavy metals, pesticides and organic materials, particularly, the added anionic surfactant has an effectively removing effect on an acraldehyde compound.
Description
Technical field
The present invention relates to a kind of filter core of removing methacrylaldehyde in the drinking water and preparation method thereof, belong to technical filed of drinking water purifying treatment.
Background technology
Methacrylaldehyde is the simplest unsaturated aldehyde, and chemical formula is C
3H
4O is the cacodorous liquid of water white transparency under normal conditions, and its steam has very strong excitant and tearing property.Methacrylaldehyde is an important synthesis intermediates very in the chemical industry, is widely used in production of resins and the organic synthesis.All contain methacrylaldehyde waste water in the above factory effluent, all can receive pollution in various degree surface water and underground water.Drink that the water that polluted by methacrylaldehyde dizziness, headache can occur, feels sick, vomiting, can cause oral cavity and gastric irritation or burn, even shock, ephritis and heart failure can occur, can cause death.Methacrylaldehyde is to introduce one of the highest compound of water environment toxic voluntarily in the human being's production life.
What usually, the removal methacrylaldehyde was more traditional is methods such as flash distillation, rectifying.For example; Publication CN1176057 has just proposed the employing rectification under vacuum, and the method for introducing inert gas is come the methacrylaldehyde in the fractionate aqueous solutions in removing aldehyde process, though the method can reduce the operating temperature of rectifying column effectively; Reduce the generation of accessory substance; But in methacrylaldehyde condensing and recycling process, cause the polymerization of methacrylaldehyde easily, thereby cause the reduction of methacrylaldehyde clearance.The method of removing methacrylaldehyde in other prior aries is utilized additive to improve and is reduced methacrylaldehyde; For example; US patent NO.5760283 discloses in the recovery of this method and has added highly basic; Before distillation, add substituted aromatic amine and in US patent NO.6074532, disclose, these class methods have significantly increased the cost of overall process, thereby and possibly the undesirable side reaction of catalysis form undesirable accessory substance.Japan Patent NO.53-60040 discloses spent ion exchange resin and has removed methacrylaldehyde, the method can produce excessive regeneration liquid waste, cycle long, consumption salt amount is big, organic existence meeting contaminated ion exchanger resin simultaneously.
Therefore; Find a kind ofly can absorb methacrylaldehyde effectively, and separate with methacrylaldehyde easily, can recycle; The absorbent that can not pollute environment, a kind of filter core of removing methacrylaldehyde in the drinking water of the present invention meets the green absorbing medium of the high adsorption rate of above-mentioned requirements just.
Summary of the invention
The present invention is directed under the existing jejune situation of treatment technology,, inconvenient operation with high costs to existing treatment technology, removal effect is relatively poor or basically not problem such as removal effect design and develop.
The objective of the invention is to realize through following technical scheme:
A kind of filter core of removing methacrylaldehyde in the drinking water, it is by comprising that the following feedstock production that accounts for total amount percentage forms:
The polytetrafluoroethylene (PTFE) 20%～60% of bentonite 30%～40% 800～1,200 ten thousand molecular weight
Sepiolite powder 10%～20% anion exchange resin 5%～10% of modification
Blowing agent 1%～5%
Preferably, a kind of filter core of removing methacrylaldehyde in the drinking water, it is by comprising that the following feedstock production that accounts for total amount percentage forms:
The polytetrafluoroethylene (PTFE) 30%～50% of bentonite 30%～35% 800～1,200 ten thousand molecular weight
Sepiolite powder 10%～15% anion exchange resin 5%～8% of modification
Blowing agent 1%～3%
More preferably, a kind of filter core of removing methacrylaldehyde in the drinking water, it is by comprising that the following feedstock production that accounts for total amount percentage forms:
The polytetrafluoroethylene (PTFE) 40% of bentonite 35% 9,500,000 molecular weight,
Sepiolite powder 15% anion exchange resin 8% of modification
Blowing agent 2%.
Described polytetrafluoroethylene (PTFE) has excellent chemical stability, corrosion resistance
,Sealing, high lubricated not viscosity, electrical insulating property and good characteristics such as anti-aging endurance play bonding and form filter medium, the effect of skeleton, hole; Its order number is 100～500 orders; Molecular weight is 8,000,000～1,200 ten thousand, and preferred, molecular weight is 9,000,000～1,000 ten thousand.
Described bentonite is to be main moisture clay pit with the montmorillonite, also claims the montmorillonite claystone, often contains a small amount of illite, kaolinite, galapectite, chlorite, zeolite, quartz, feldspar, calcite etc.Bentonite has good caking property, good anion exchange property and strong adsorptivity, in aqueous medium, can be dispersed into as a form of gel and suspension, and this medium solution has certain viscosity, variability and lubricity; All gases, liquid, organic substance are had certain adsorption capacity, and maximal absorptive capacity can reach 5 times of weight to self; The admixture of it and water, mud or fine sand has plasticity and cohesiveness.Its order number is 80～150 orders.
The processing modified processing of described sepiolite powder: natural sepiolite is ground into 80～100 purpose fine particle things; Use concentration to be the spent acid impregnation process of 2mol/g 15～18 hours; In sodium carbonate or caustic alkali and washing,, pulverize again then at 300～500 ℃ of roasting temperatures.
Described anion exchange resin is one or both in strong-base anion-exchange resin, 717 strong-base anion-exchange resins, D201 macroporous strong basic styrene series I type anion exchange resin, D301 macroreticular weakly base polystyrene I type anion exchange resin, the 331 alkalescent epoxy type anion exchange resins.
Described blowing agent is a kind of in food grade ammonium chloride, food grade sodium bicarbonate, the Celogen Az.
Acrylic acid filter core and preparation method thereof in a kind of removal drinking water of the present invention, it may further comprise the steps:
Take by weighing each raw material and mixing and stirring in proportion; Ratio with 0.1～0.5g/kg in the mixture of pasty state adds anion surfactant; Stir after 20～30 minutes, insert in the cellular mould and suppress, 200～300 minutes aftershapings of sintering under 250～350 ℃ of high temperature; Dry in the air to cooling and demolding, promptly become and have the porous honeycomb structure filter core.During use, with behind the nonwoven parcel, be positioned over bare structure filter core of the present invention in the carrier of stainless steel or plastic casing and other any corresponding sizes, get final product.
Wherein said anion surfactant is a kind of in stearic acid, neopelex, oleic acid, laurate, lauryl sodium sulfate, dioctyl sodium sulfosuccinate, the sodium glycocholate.
Beneficial effect of the present invention:
1. filter core of the present invention is selected macromolecular material and sorbing material perfect adaptation for use, and the adding that can effectively remove impurity, particularly selected anion surfactant such as heavy metal, agricultural chemicals, organic matter has removal effect efficiently to the methacrylaldehyde compound;
2. raw material sepiolite of the present invention is after modification is handled; Can remove wherein contained impurity and DDGS, etch abundant hole, increase its contact area; Thereby improved the characteristics such as absorption, ion-exchange of sepiolite, made that the adsorption rate to methacrylaldehyde improves greatly.
The specific embodiment
Instance 1
The sepiolite modification is handled:
Natural sepiolite is ground into 100 purpose fine particle things, uses concentration to be the spent acid impregnation process of 2mol/g 15 hours, in sodium carbonate or caustic alkali and washing,, pulverize again then at 300 ℃ of roasting temperatures.
Instance 2
By mass percentage:
The polytetrafluoroethylene (PTFE) 40% of bentonite 35% 9,500,000 molecular weight,
The sepiolite powder of modification 15% 717 strong-base anion-exchange resins 8%
Neopelex 2%
Its preparation method is following:
Take by weighing each raw material and mixing and stirring in proportion; Ratio with 0.2g/kg in the mixture of pasty state adds anion surfactant; Stir after 20 minutes, insert in the cellular mould and suppress, 200 minutes aftershapings of sintering under 250 ℃ of high temperature; Dry in the air to cooling and demolding, promptly become and have the porous honeycomb structure filter core.
Instance 3
By mass percentage:
The polytetrafluoroethylene (PTFE) 35% of bentonite 30% 9,500,000 molecular weight,
The sepiolite powder 20% D201 macroporous strong basic styrene series I type anion exchange resin 10% of modification
Oleic acid 5%
Its preparation method is following:
Take by weighing each raw material and mixing and stirring in proportion; Ratio with 0.3g/kg in the mixture of pasty state adds anion surfactant; Stir after 30 minutes, insert in the cellular mould and suppress, 250 minutes aftershapings of sintering under 300 ℃ of high temperature; Dry in the air to cooling and demolding, promptly become and have the porous honeycomb structure filter core.
Instance 4
By mass percentage:
The polytetrafluoroethylene (PTFE) 44% of bentonite 40% 9,500,000 molecular weight,
The sepiolite powder 10% D301 macroreticular weakly base polystyrene I type anion exchange resin 5% of modification
Dioctyl sodium sulfosuccinate 1%
Its preparation method is following:
Take by weighing each raw material and mixing and stirring in proportion; Ratio with 0.5g/kg in the mixture of pasty state adds anion surfactant; Stir after 30 minutes, insert in the cellular mould and suppress, 300 minutes aftershapings of sintering under 350 ℃ of high temperature; Dry in the air to cooling and demolding, promptly become and have the porous honeycomb structure filter core.
Instance 5
Get the microporous cellular filter core 1,2,3 of instance 1～4 gained; 4, the outsourcing two-layer nonwoven superscribes polypropylene porous net at skin; Be positioned in stainless steel or the plastic casing, be used for Drinking Water, good through detecting this filter core to the removal effect of methacrylaldehyde in the drinking water; Be fit to very much the needs of home terminal drinking water treatment, result is as shown in the table:
Following table uses filter core to handle the drinking water of front and back, and (method of testing adopts GB/T 5750-2006 unit: mg/L)
Can find out from last table, utilize filter core Drinking Water of the present invention after, the methacrylaldehyde in the drinking water is far below drinking water standard limit value 0.1 mg/L, explains that the methacrylaldehyde that adopts filter core of the present invention to remove in the drinking water obtained good effect.
Claims (7)
1. filter core of removing methacrylaldehyde in the drinking water and preparation method thereof is characterized in that the mass percent of each raw material is respectively:
The polytetrafluoroethylene (PTFE) 20%～60% of bentonite 30%～40% 800～1,200 ten thousand molecular weight
Sepiolite powder 10%～20% anion exchange resin 5%～10% of modification
Blowing agent 1%～5%.
2. a kind of filter core of removing methacrylaldehyde in the drinking water according to claim 1 and preparation method thereof is characterized in that the mass percent of each raw material is respectively:
The polytetrafluoroethylene (PTFE) 30%～50% of bentonite 30%～35% 800～1,200 ten thousand molecular weight
Sepiolite powder 10%～15% anion exchange resin 5%～8% of modification
Blowing agent 1%～3%.
3. a kind of filter core of removing methacrylaldehyde in the drinking water according to claim 2 and preparation method thereof is characterized in that the mass percent of each raw material is respectively:
The polytetrafluoroethylene (PTFE) 40% of bentonite 35% 9,500,000 molecular weight,
Sepiolite powder 15% anion exchange resin 8% of modification
Blowing agent 2%.
4. a kind of filter core of removing methacrylaldehyde in the drinking water according to claim 3 and preparation method thereof; It is characterized in that: natural sepiolite is ground into 80～100 purpose fine particle things; Use concentration to be the spent acid impregnation process of 2mol/g 15～18 hours; Protect in the caustic alkali and washing through sodium carbonate again,, pulverize then at 300～500 ℃ of roasting temperatures.
5. a kind of filter core of removing methacrylaldehyde in the drinking water according to claim 3 and preparation method thereof is characterized in that: described anion exchange resin is one or both in strong-base anion-exchange resin, 717 strong-base anion-exchange resins, D201 macroporous strong basic styrene series I type anion exchange resin, D301 macroreticular weakly base polystyrene I type anion exchange resin, the 331 alkalescent epoxy type anion exchange resins.
6. a kind of filter core of removing methacrylaldehyde in the drinking water according to claim 3 and preparation method thereof is characterized in that: described blowing agent is a kind of in food grade ammonium chloride, food grade sodium bicarbonate, the Celogen Az.
7. a kind of filter core of removing methacrylaldehyde in the drinking water according to claim 1 and preparation method thereof is characterized in that its preparation method is: take by weighing each raw material in proportion, after the mixing and stirring; Ratio with 0.1～0.5g/kg in the mixture of pasty state adds anion surfactant; Place honeycomb die again, calcining moulding under 250～350 ℃ of high temperature, calcination time is 200～300 minutes; Dry in the air to cooling and demolding, promptly become and have the porous honeycomb structure filter core.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103207753A CN102527155A (en) | 2011-10-20 | 2011-10-20 | Structural filter element for removing acraldehyde from drinking water and preparation method of structural filter element |
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| CN2011103207753A CN102527155A (en) | 2011-10-20 | 2011-10-20 | Structural filter element for removing acraldehyde from drinking water and preparation method of structural filter element |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106552607A (en) * | 2016-12-05 | 2017-04-05 | 郑州丽福爱生物技术有限公司 | A kind of filtering material of Adsorption of Heavy Metals and its preparation method and application |
| CN106673110A (en) * | 2017-01-10 | 2017-05-17 | 北京佳康尔水处理技术有限公司 | Purified water filter element, method for manufacturing same and water dispenser |
| CN106732448A (en) * | 2016-12-05 | 2017-05-31 | 郑州丽福爱生物技术有限公司 | Sorbing material of one heavy metal species and its preparation method and application |
| CN108439539A (en) * | 2018-03-16 | 2018-08-24 | 合肥汇通控股股份有限公司 | A kind of processing method of chromate waste water |
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| CN1994515A (en) * | 2006-12-29 | 2007-07-11 | 北京佳康尔水处理技术有限公司 | Filter core for removing nitrite-nitrogen from drinking water and method for preparing same |
| CN1994520A (en) * | 2006-12-28 | 2007-07-11 | 北京佳康尔水处理技术有限公司 | Filter core for removing agricultural chemical or pesticide from drinking water and preparation method thereof |
| CN101628229A (en) * | 2008-07-15 | 2010-01-20 | 周奇迪 | Filter medium for removing polychlorobiphenyl in water and preparation method thereof |
| CN101856592A (en) * | 2010-05-13 | 2010-10-13 | 赵溶 | Nanometer mineral substance air purifier |
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2011
- 2011-10-20 CN CN2011103207753A patent/CN102527155A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1994520A (en) * | 2006-12-28 | 2007-07-11 | 北京佳康尔水处理技术有限公司 | Filter core for removing agricultural chemical or pesticide from drinking water and preparation method thereof |
| CN1994515A (en) * | 2006-12-29 | 2007-07-11 | 北京佳康尔水处理技术有限公司 | Filter core for removing nitrite-nitrogen from drinking water and method for preparing same |
| CN101628229A (en) * | 2008-07-15 | 2010-01-20 | 周奇迪 | Filter medium for removing polychlorobiphenyl in water and preparation method thereof |
| CN101856592A (en) * | 2010-05-13 | 2010-10-13 | 赵溶 | Nanometer mineral substance air purifier |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106552607A (en) * | 2016-12-05 | 2017-04-05 | 郑州丽福爱生物技术有限公司 | A kind of filtering material of Adsorption of Heavy Metals and its preparation method and application |
| CN106732448A (en) * | 2016-12-05 | 2017-05-31 | 郑州丽福爱生物技术有限公司 | Sorbing material of one heavy metal species and its preparation method and application |
| CN106673110A (en) * | 2017-01-10 | 2017-05-17 | 北京佳康尔水处理技术有限公司 | Purified water filter element, method for manufacturing same and water dispenser |
| CN108439539A (en) * | 2018-03-16 | 2018-08-24 | 合肥汇通控股股份有限公司 | A kind of processing method of chromate waste water |
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Application publication date: 20120704 |