CN102553352A - Structure filter for removing formaldehyde from drinking water and its preparation method - Google Patents
Structure filter for removing formaldehyde from drinking water and its preparation method Download PDFInfo
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- CN102553352A CN102553352A CN2011103207838A CN201110320783A CN102553352A CN 102553352 A CN102553352 A CN 102553352A CN 2011103207838 A CN2011103207838 A CN 2011103207838A CN 201110320783 A CN201110320783 A CN 201110320783A CN 102553352 A CN102553352 A CN 102553352A
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- drinking water
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- removing formaldehyde
- formaldehyde
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Abstract
The invention discloses a structure filter for removing formaldehyde from drinking water and its preparation method, and belongs to the drinking water purifying treatment technical field. The filter is prepared by mixing and sintering hydrotalcite powder, teflon with high molecular weight, bentonite, a foaming agent and an adhesive; the preparation method comprises the following steps: weighting raw materials in proportion and uniformly mixing and stirring, placing in a honeycomb type die for pressing, sintering at the high temperature of 200-300 DEG C for 150-250 minutes and then molding, and cooling to demould to obtain the porous honeycomb type structure filter. The structure filter for removing formaldehyde from drinking water has the advantages of abundant honeycomb aperture structure, large specific surface area, specific surface functional groups, and stable physics and chemical performance, and is an excellent adsorption and filtration medium. The water quality can be purified, no secondary pollution is realized, ozonized by-product formaldehyde can be removed with high efficiency, and the structure filter is suitable for household terminal drinking water treatment.
Description
Technical field
The present invention relates to a kind of filter core of removing formaldehyde in the drinking water and preparation method thereof, belong to technical filed of drinking water purifying treatment.
Background technology
In the drinking water source of formaldehyde mainly be in discharging and the water of industrial wastewater natural organic matter (humus) in ozonisation, the product of oxidation in the chlorination process.Organic matter can produce a certain amount of formaldehyde through pyrolysis in the water.People such as Yamada research points out that heating can make content of formaldehyde increase in the water; Content of formaldehyde is 0～24.0 μ g/L in common drinking water; Boil back concentration and increase to 18.0～73.5 μ g/L, and, be 10.0～110 μ g/L before boiling through the surface water of ozone treatment; Increase to 21.0～243 μ g/L after boiling, the content of formaldehyde problem also has report in the relevant mineral water.Formaldehyde also can dissolve from the waterway fitting of polyacetal resin and drench.
According to domestic medical journal pertinent literature report, formaldehyde can reduce spread effect, toxic action and carcinogenesis to the harm of health, causes ophthalmodynia, sheds tears, symptom such as dermatitis.Formaldehyde also is a kind of stronger mutagenesis, carcinogen; Be one of hazards that cause tumor mortality; Long-term contact low dosage formaldehyde; Can cause chronic respiratory disease, can cause reparation, the pregnancy syndrome of nasopharyngeal carcinoma, colon cancer, the cancer of the brain, nuclear gene mutation, the interior commissure of dna single chain and DNA and protein commissure and inhibition dna damage, can cause neonatal chromosome disorder, leukaemia, also can cause that teenager's memory and intelligence descend.Existing enough evidences show that formaldehyde is strong carcinogenic substance to animal, show that like people's such as Marsh research long-term contact formaldehyde makes the incidence of disease of lung cancer increase by 1.6 times.People such as Kilburn have studied the influence of formaldehyde to the neurobehavioral function, point out that long-term (14-30) uses formaldehyde, formalin can cause the forfeiture of central nervous system function.People such as Norbaeck have investigated the relation of asthma situation and room air, point out formaldehyde and volatile organic content higher be the reason that causes symptoms such as panting.Formaldehyde is the material than high toxicity, preferentially controls on the list formaldehyde at China's toxic chemical and is in second.Because the toxic action and the carcinogenesis of formaldehyde, thereby the processing of PARA FORMALDEHYDE PRILLS(91,95) is very important, particularly to the processing of formaldehyde in the drinking water, to the protection people ' s health with develop the economy significant.
For eliminating or reducing the injury that the formaldehyde contaminant water causes people's health, the method for formaldehyde in the multiple removal drinking water is disclosed in the prior art, for example, and the Fenton method, this method PARA FORMALDEHYDE PRILLS(91,95) has removal effect preferably, but this method H
2O
2Expense higher, Fe
2+Regeneration difficulty, particularly the degradation time of hardly degraded organic substance is longer to organic matter, and degradation effect is not ideal enough, and the water treatment expense is also very high.And for example, biological treatment has better adsorbing mushroom through cultivating various PARA FORMALDEHYDE PRILLS(91,95)s in the method, but the pH value of culture of strains, the strictness of processing needs etc., service condition is too harsh.And for example, the steam blow-off method, this method is applicable to the processing of formaldehyde in the formaldehyde waste water of high concentration very, and is low for the drinking water treatment efficient that contains low concentration formaldehyde.Wherein, the water that these methods are handled generally all needs preliminary treatment and last handling process, uses inconvenience, also can change the character of water, and operating cost is higher, is fit to commercial Application, but is not suitable for the processing of household drinking water.
Clearance is lower when considering the formaldehyde of method of the prior art in removing drinking water, operating cost is higher, and a kind of filter method that formaldehyde in the drinking water is had higher clearance need be provided.
Summary of the invention
The technical problem that the present invention solves is, a kind of filter core of removing formaldehyde in the drinking water and preparation method thereof is provided, and the formaldehyde in the drinking water is had higher removal, and be applicable to the home terminal drinking water treatment.
The objective of the invention is to realize through following technical scheme:
A kind of filter core of removing formaldehyde in the drinking water, it is by comprising that the following feedstock production that accounts for total amount percentage forms:
The polytetrafluoroethylene (PTFE) 15%～20% of neatly stone flour 5%～40% 800～1,200 ten thousand molecular weight
Bentonite 35%～50% blowing agent 5%～10%
Adhesive 5%～10%
Preferably, a kind of filter core of removing formaldehyde in the drinking water, it is by comprising that the following feedstock production that accounts for total amount percentage forms:
The polytetrafluoroethylene (PTFE) 15%～18% of neatly stone flour 10%～30% 800～1,200 ten thousand molecular weight
Bentonite 40%～45% blowing agent 5%～9%
Adhesive 5%～9%
More preferably, a kind of filter core of removing formaldehyde in the drinking water, it is by comprising that the following feedstock production that accounts for total amount percentage forms:
The polytetrafluoroethylene (PTFE) 16% of neatly stone flour 30% 1,000 ten thousand molecular weight
Bentonite 42% blowing agent 6%
Adhesive 6%.
Described blowing agent is a kind of in food grade ammonium chloride, food grade sodium bicarbonate, the Celogen Az.
Described adhesive is a kind of in cupric oxide-phosphoric acid glue, waterglass, white glue with vinyl, epoxy adhesive, the agent of acrylic acid gluing, phenolic aldehyde-acrylonitrile-butadiene rubber adhesive, phenolic aldehyde-neoprene adhesive, the agent of organosilicon gluing.
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 neatly stone flour main component is a hydrous magnesium silicate, forms through pulverizing, and has characteristics such as lubricity, chemical torpescence, absorption affinity are strong, also adsorbable formaldehyde, and its order number is 80～150 orders.
Described bentonite has good cohesive force, and the suction-operated of PARA FORMALDEHYDE PRILLS(91,95) is very strong, and its order number is 80～150 orders.
A kind of filter core of removing formaldehyde in the drinking water of the present invention and preparation method thereof, it may further comprise the steps:
Take by weighing each raw material and mixing and stirring in proportion, insert in the cellular mould and suppress, 150～250 minutes aftershapings of sintering dry in the air to cooling and demolding under 200～300 ℃ of high temperature, promptly become to 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.
Beneficial effect of the present invention:
1. a kind of filter core of removing formaldehyde in the drinking water of the present invention, it has like cellular abundant pore structure, huge specific area, special surface functional group, stable physics and chemical property, is good absorption, filter medium;
2. relative prior art outside the filter core that the invention has the advantages that preparation not only can purify water, has also realized non-secondary pollution, removes the accessory substance formaldehyde of ozonisation expeditiously, is applicable to the home terminal drinking water treatment.
The specific embodiment
Instance 1
The polytetrafluoroethylene (PTFE) (500 order) 16% of neatly stone flour (100 order) 30% 1,000 ten thousand molecular weight
Bentonite (150 order) 42% ammonium chloride 6%
Cupric oxide-phosphoric acid glue 6%
Its preparation method is following:
Take by weighing each raw material and mixing and stirring in proportion, insert in the cellular mould and suppress, 150 minutes aftershapings of sintering dry in the air to cooling and demolding under 300 ℃ of high temperature, promptly become to have the porous honeycomb structure filter core.
Instance 2
The polytetrafluoroethylene (PTFE) (500 order) 15% of neatly stone flour (100 order) 40% 1,000 ten thousand molecular weight
Bentonite (150 order) 35% food grade sodium bicarbonate 5%
White glue with vinyl 5%
Its preparation method is following:
Take by weighing each raw material and mixing and stirring in proportion, insert in the cellular mould and suppress, 180 minutes aftershapings of sintering dry in the air to cooling and demolding under 280 ℃ of high temperature, promptly become to have the porous honeycomb structure filter core.
Instance 3
The polytetrafluoroethylene (PTFE) (500 order) 20% of neatly stone flour (100 order) 10% 1,000 ten thousand molecular weight
Bentonite (150 order) 50% Celogen Az 10%
Epoxy adhesive 10%
Its preparation method is following:
Take by weighing each raw material and mixing and stirring in proportion, insert in the cellular mould and suppress, 200 minutes aftershapings of sintering dry in the air to cooling and demolding under 250 ℃ of high temperature, promptly become to have the porous honeycomb structure filter core.
Instance 4
The polytetrafluoroethylene (PTFE) (500 order) 20% of neatly stone flour (100 order) 30% 1,000 ten thousand molecular weight
Bentonite (150 order) 32% Celogen Az 6%
Acrylic acid gluing agent 6%
Its preparation method is following:
Take by weighing each raw material and mixing and stirring in proportion, insert in the cellular mould and suppress, 230 minutes aftershapings of sintering dry in the air to cooling and demolding under 230 ℃ of high temperature, promptly become to have the porous honeycomb structure filter core.
Instance 5
The polytetrafluoroethylene (PTFE) (500 order) 15% of neatly stone flour (100 order) 20% 1,000 ten thousand molecular weight
Bentonite (150 order) 50% food grade sodium bicarbonate 10%
Phenolic aldehyde-acrylonitrile-butadiene rubber adhesive 5%
Its preparation method is following:
Take by weighing each raw material and mixing and stirring in proportion, insert in the cellular mould and suppress, 250 minutes aftershapings of sintering dry in the air to cooling and demolding under 200 ℃ of high temperature, promptly become to have the porous honeycomb structure filter core.
Instance 6
Get the microporous cellular filter core 1,2,3 of instance 1～5 gained; 4,5 outsourcing two-layer nonwoven superscribe 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 formaldehyde 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 formaldehyde in the drinking water is far below drinking water standard limit value 0.9 mg/L, explains that the formaldehyde that adopts filter core of the present invention to remove in the drinking water obtained good effect.
Claims (9)
1. filter core of removing formaldehyde in the drinking water and preparation method thereof is characterized in that the mass percent of each raw material is respectively:
The polytetrafluoroethylene (PTFE) 15%～20% of neatly stone flour 5%～40% 800～1,200 ten thousand molecular weight
Bentonite 35%～50% blowing agent 5%～10%
Adhesive 5%～10%.
2. a kind of filter core of removing formaldehyde 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) 15%～18% of neatly stone flour 10%～30% 800～1,200 ten thousand molecular weight
Bentonite 40%～45% blowing agent 5%～9%
Adhesive 5%～9%.
3. a kind of filter core of removing formaldehyde 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) 16% of neatly stone flour 30% 1,000 ten thousand molecular weight
Bentonite 42% blowing agent 6%
Adhesive 6%.
4. a kind of filter core of removing formaldehyde 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.
5. a kind of filter core of removing formaldehyde in the drinking water according to claim 3 and preparation method thereof is characterized in that: described adhesive is a kind of in cupric oxide-phosphoric acid glue, waterglass, white glue with vinyl, epoxy adhesive, the agent of acrylic acid gluing, phenolic aldehyde-acrylonitrile-butadiene rubber adhesive, phenolic aldehyde-neoprene adhesive, the agent of organosilicon gluing.
6. a kind of filter core of removing formaldehyde in the drinking water according to claim 3 and preparation method thereof; It is characterized in that: the order number of described high molecular weight polytetrafluoroethyldispersions 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.
7. a kind of filter core of removing formaldehyde in the drinking water according to claim 3 and preparation method thereof is characterized in that: the order number of described neatly stone flour is 80～300 orders.
8. a kind of filter core of removing formaldehyde in the drinking water according to claim 3 and preparation method thereof is characterized in that: described bentonitic order number is 200～350 orders.
9. a kind of filter core of removing formaldehyde in the drinking water according to claim 1 and preparation method thereof; It is characterized in that; Its preparation method is following: take by weighing each raw material and mixing and stirring in proportion, insert in the cellular mould and suppress, 150～250 minutes aftershapings of sintering under 200～300 ℃ of high temperature; Dry in the air to cooling and demolding, promptly become and have the porous honeycomb structure filter core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103207838A CN102553352A (en) | 2011-10-20 | 2011-10-20 | Structure filter for removing formaldehyde from drinking water and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103207838A CN102553352A (en) | 2011-10-20 | 2011-10-20 | Structure filter for removing formaldehyde from drinking water and its preparation method |
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| CN102553352A true CN102553352A (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103207838A Pending CN102553352A (en) | 2011-10-20 | 2011-10-20 | Structure filter for removing formaldehyde from drinking water and its preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381354A (en) * | 2013-06-25 | 2013-11-06 | 蚌埠凤凰滤清器有限责任公司 | Structural filter core for removing and adsorbing harmful particles and preparation method thereof |
| CN104016439A (en) * | 2014-06-24 | 2014-09-03 | 潘峰 | Filter medium for removing formaldehyde from drinking water, filter element and preparation method |
| CN113171765A (en) * | 2021-04-27 | 2021-07-27 | 常州大学 | Preparation method and application of honeycomb-shaped renewable porous attapulgite adsorbent |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237470A (en) * | 1998-06-02 | 1999-12-08 | 赵允良 | Nanometer-grade filter tube and its production method |
| CN1994519A (en) * | 2006-12-27 | 2007-07-11 | 北京佳康尔水处理技术有限公司 | Filter core with molecular sieve structure 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 |
| CN1994516A (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 chlorine and its byproduct in drinking water and method for preparing same |
| CN101475767A (en) * | 2006-03-31 | 2009-07-08 | 中国科学院过程工程研究所 | Coating for collecting formaldehyde |
-
2011
- 2011-10-20 CN CN2011103207838A patent/CN102553352A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237470A (en) * | 1998-06-02 | 1999-12-08 | 赵允良 | Nanometer-grade filter tube and its production method |
| CN101475767A (en) * | 2006-03-31 | 2009-07-08 | 中国科学院过程工程研究所 | Coating for collecting formaldehyde |
| CN1994519A (en) * | 2006-12-27 | 2007-07-11 | 北京佳康尔水处理技术有限公司 | Filter core with molecular sieve structure 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 |
| CN1994516A (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 chlorine and its byproduct in drinking water and method for preparing same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381354A (en) * | 2013-06-25 | 2013-11-06 | 蚌埠凤凰滤清器有限责任公司 | Structural filter core for removing and adsorbing harmful particles and preparation method thereof |
| CN103381354B (en) * | 2013-06-25 | 2016-04-20 | 安徽凤凰滤清器股份有限公司 | A kind of filter core and preparation method thereof removing absorption deleterious particle |
| CN104016439A (en) * | 2014-06-24 | 2014-09-03 | 潘峰 | Filter medium for removing formaldehyde from drinking water, filter element and preparation method |
| CN104016439B (en) * | 2014-06-24 | 2016-06-01 | 潘峰 | For removing the filtration medium of formaldehyde in tap water, filter core and preparation method |
| CN113171765A (en) * | 2021-04-27 | 2021-07-27 | 常州大学 | Preparation method and application of honeycomb-shaped renewable porous attapulgite adsorbent |
| CN113171765B (en) * | 2021-04-27 | 2024-03-19 | 常州大学 | Preparation method and application of honeycomb renewable porous attapulgite adsorbent |
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Application publication date: 20120711 |