CN1994520A - Filter core for removing agricultural chemical or pesticide from drinking water and preparation method thereof - Google Patents
Filter core for removing agricultural chemical or pesticide from drinking water and preparation method thereof Download PDFInfo
- Publication number
- CN1994520A CN1994520A CN 200610170688 CN200610170688A CN1994520A CN 1994520 A CN1994520 A CN 1994520A CN 200610170688 CN200610170688 CN 200610170688 CN 200610170688 A CN200610170688 A CN 200610170688A CN 1994520 A CN1994520 A CN 1994520A
- Authority
- CN
- China
- Prior art keywords
- filter core
- drinking water
- powder
- agricultural chemicals
- pesticide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003651 drinking water Substances 0.000 title claims abstract description 26
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 26
- 239000003905 agrochemical Substances 0.000 title claims description 27
- 239000000575 pesticide Substances 0.000 title claims description 27
- 238000002360 preparation method Methods 0.000 title claims description 11
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 36
- -1 polyethylene Polymers 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 239000004698 Polyethylene Substances 0.000 claims description 12
- 229910021536 Zeolite Inorganic materials 0.000 claims description 12
- 229960000892 attapulgite Drugs 0.000 claims description 12
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052625 palygorskite Inorganic materials 0.000 claims description 12
- 229920000573 polyethylene Polymers 0.000 claims description 12
- 239000010457 zeolite Substances 0.000 claims description 12
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- NBOCQTNZUPTTEI-UHFFFAOYSA-N 4-[4-(hydrazinesulfonyl)phenoxy]benzenesulfonohydrazide Chemical compound C1=CC(S(=O)(=O)NN)=CC=C1OC1=CC=C(S(=O)(=O)NN)C=C1 NBOCQTNZUPTTEI-UHFFFAOYSA-N 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract 2
- 239000002957 persistent organic pollutant Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000002688 persistence Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 239000002384 drinking water standard Substances 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical group [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BMTAFVWTTFSTOG-UHFFFAOYSA-N Butylate Chemical compound CCSC(=O)N(CC(C)C)CC(C)C BMTAFVWTTFSTOG-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- YVGGHNCTFXOJCH-UHFFFAOYSA-N DDT Chemical compound C1=CC(Cl)=CC=C1C(C(Cl)(Cl)Cl)C1=CC=C(Cl)C=C1 YVGGHNCTFXOJCH-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- HKPHPIREJKHECO-UHFFFAOYSA-N butachlor Chemical compound CCCCOCN(C(=O)CCl)C1=C(CC)C=CC=C1CC HKPHPIREJKHECO-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- FRCCEHPWNOQAEU-UHFFFAOYSA-N heptachlor Chemical compound ClC1=C(Cl)C2(Cl)C3C=CC(Cl)C3C1(Cl)C2(Cl)Cl FRCCEHPWNOQAEU-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- LCCNCVORNKJIRZ-UHFFFAOYSA-N parathion Chemical compound CCOP(=S)(OCC)OC1=CC=C([N+]([O-])=O)C=C1 LCCNCVORNKJIRZ-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- YQMLDSWXEQOSPP-UHFFFAOYSA-N selanylidenemercury Chemical compound [Hg]=[Se] YQMLDSWXEQOSPP-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Abstract
The invention relates to a filter element which can remove the agriculture medicine or disinfector in drinking water and relative production, wherein its production comprises that: preparing materials via formula, mixing and putting into mould; sintering at high temperature, drying to normal temperature, removing mould, to obtain the porous filter element. The invention can effectively remove agriculture medicine or disinfector at 95-99. 5%.
Description
Technical field
The present invention relates to a kind of filter core, particularly relate to a kind of filter core of removing agricultural chemicals in the drinking water or pesticide and preparation method thereof.
Background technology
Developing rapidly of whole world worker, agricultural driven the economic stability sustainable growth, and living standards of the people progressively improve.But the problem of environmental pollution of Yin Faing is more and more serious also thus.In numerous organic pollutions, (persistent organic pollutants POPs) has caused national governments, academia, industrial quarters and the public's extensive attention to persistence organic pollutant for the significant damage of global environment and human health.POPs has four obvious characteristics: 1. persistence exists in the environment that institute discharges and transmits.2. can be accumulated in the food chain and the biology of last nutrition registration is impacted.3. can arrive remote arctic regions by long-distance migration.4. meeting causes harmful to the biology that contacts this material or toxic effect is arranged under respective environment concentration.
For improving crop yield, promote crops to grow up, a large amount of employing agricultural chemicals and pesticide in the agricultural production, and wherein most of pollutant all belongs to POPs.These pollutants are propagated in every way as in air, are entered the face of land or underground water etc. with irrigation water or rainwater, finally human body are produced harm, and severe patient can cause death.
May 23 calendar year 2001, in the Sweden capital, the environment minister of 127 countries or high-ranking official represent separately, and government has signed " about the Convention of Stockholm of persistence organic pollutant ", i.e. " POPs pact ", this pact and on May 17th, 2004 are formally effective, thereby have started human process of declaring a war to POPs.
At present, traditional water purifier all can not effectively be removed this class harmful substance of agricultural chemicals or pesticide, and this type of organic pollution situation is still waiting further to study and improve.
Summary of the invention
The present invention provides a kind of drink water purifying that is used in order to address the above problem, and improves water quality, and the especially a kind of filter core that can effectively remove agricultural chemicals or pesticide can reduce the harm of this type of material to human body, guarantees that safety of drinking water is reliable.
An object of the present invention is to provide a kind of filter core of removing agricultural chemicals in the drinking water or pesticide.
Another object of the present invention provides the preparation method of the filter core of agricultural chemicals in the described removal drinking water or pesticide.
The objective of the invention is to be achieved through the following technical solutions:
A kind of filter core of removing agricultural chemicals in the drinking water or pesticide, it is respectively formed by the raw material system that comprises following parts by weight;
The polyethylene powder 100-300 zeolite powder 5-50 of 1,500,000-7,000,000 molecular weight
Activated carbon powder 50-200 attapulgite powder 10-80
Gas generation agent 5-100
Preferably, a kind of filter core of removing agricultural chemicals in the drinking water or pesticide, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 150-200 zeolite powder 20-40 of 1,500,000-7,000,000 molecular weight
Activated carbon powder 100-150 attapulgite powder 20-60
Gas generation agent 20-70
More preferably, a kind of filter core of removing agricultural chemicals in the drinking water or pesticide, it is formed by the feedstock production that comprises following parts by weight;
Polyethylene powder 150 zeolite powders 30 of 1,500,000-7,000,000 molecular weight
Activated carbon powder 100 attapulgite powder 40
Gas generation agent 30
Activated carbon powder described in the present invention is the medicinal active powdered carbon, has the effect of efficient absorption chemical fertilizer, residues of pesticides, heterochromatic peculiar smell, chlorine and heavy metal, and its order number is the 100-200 order.
Polyethylene powder described in the present invention has the effect of powerful static dynamic absorption, can capture trickle, superfine particle that microfiltration can not filtration resistance, and its order number is the 20-160 order, and molecular weight is 1,500,000-7,000,000, and preferred, molecular weight is 2,500,000-4,000,000.
Zeolite powder described in the present invention and attapulgite powder have good adsorption effect to agricultural chemicals, pesticide residues, and its order number average is the 100-250 order.
Gas generation agent described in the present invention is food-grade carbonic hydroammonium, Celogen Az, oxalic acid, can play pore-creating and make the effect in chamber, and is preferred, food-grade carbonic hydroammonium.
A kind of preparation method who removes the filter core of agricultural chemicals in the drinking water or pesticide of the present invention, it may further comprise the steps;
Take by weighing each raw material by formula ratio, after the mixing and stirring, insert in the mould, at high temperature through sinter molding, the demoulding to the normal temperature of drying in the air promptly becomes the tubular structure filter core with regulation wall thickness, height of porous.In use, this naked filter core liner two-layer nonwoven, the outsourcing two-layer nonwoven wraps polypropylene porous net at skin again, and bonding the going up in filter core two ends connects end cap, is positioned over stainless steel or plastic casing, gets final product.
Sintering temperature is at 200-300 ℃ among the preparation method of a kind of filter core of removing agricultural chemicals in the drinking water or pesticide of the present invention, and sintering time is 120-160 minute, dries in the air behind the sintering to the 40-60 ℃ of demoulding.
A kind of filter core of removing agricultural chemicals in the drinking water or pesticide of the present invention can obviously reduce the harm to human body of agricultural chemicals, pesticide in purifying drinking water, make water after filtering become safety, relieved drinking water.After testing, this filter core to the clearance of benzo pollutants, agricultural chemicals and pesticide in the drinking water at 95%-99.5%.
The specific embodiment
Following examples are in order further to describe the present invention for example, rather than limit the present invention by any way.
Embodiment 1
The polyethylene powder of 4,000,000 molecular weight (100 order) 150g
Medicinal active powdered carbon (160 order) 100g
Zeolite powder (250 order) 30g
Attapulgite powder (200 order) 40g
Food-grade carbonic hydroammonium 30g
Its preparation method is as follows:
Take by weighing each raw material by formula ratio, after the mixing and stirring, insert in the tubular die, at 250 ℃ of following sintering after 150 minutes, the demoulding after 60 ℃ of drying in the air.Promptly become the tubular structure filter core of porous.
Embodiment 2
The polyethylene powder of 2,000,000 molecular weight (40 order) 200g
Medicinal active powdered carbon (100 order) 50g
Zeolite powder (100 order) 50g
Attapulgite powder (120 order) 20g
Celogen Az 50g
It is as follows that it makes each method:
Take by weighing each raw material by formula ratio, after the mixing and stirring, insert in the tubular die, at 260 ℃ of following sintering after 130 minutes, the demoulding after 45 ℃ of drying in the air.Promptly become the tubular structure filter core of porous.
Embodiment 3
The polyethylene powder of 3,000,000 molecular weight (80 order) 250g
Medicinal active powdered carbon (150 order) 70g
Zeolite powder (150 order) 10g
Attapulgite powder (150 order) 30g
Oxalic acid 10g
Its preparation method is as follows:
Take by weighing each raw material by formula ratio, after the mixing and stirring, insert in the tubular die, at 230 ℃ of following sintering after 160 minutes, the demoulding after 50 ℃ of drying in the air.Promptly become the tubular structure filter core of porous.
Embodiment 4
The polyethylene powder of 5,000,000 molecular weight (140 order) 100g
Medicinal active powdered carbon (180 order) 150g
Zeolite powder (200 order) 20g
Attapulgite powder (220 order) 70g
Food-grade carbonic hydroammonium 20g
Its preparation method is as follows:
Take by weighing each raw material by formula ratio, after the mixing and stirring, insert in the tubular die, at 220 ℃ of following sintering after 120 minutes, the demoulding after 60 ℃ of drying in the air.Promptly become the tubular structure filter core of porous.
Below remove the effect of the filter core of agricultural chemicals in the drinking-water or pesticide by the survey report explanation embodiment of the invention 1 a kind of;
Institute for Environment Hygiene and Health Related Product Safety, China CDC
Survey report
Sample is accepted numbering: the 2005KF0890 date: on December 9th, 2005
The sample title
The filter core of the embodiment of the invention 1Kind of inspection
Entrust
Interventions Requested
The filter element filtering performance testDate of manufacture
In September, 2005
Be subjected to the sample date
On November 28th, 2005Inspected the date
On December 9th, 2005
Assay:
According to " U.S.'s 2001 drinking water standards ", " European Union's 1998 drinking water standards ", U.S. EPA 524.2 methods " stripping capture-gas phase look/mass spectrometric determination volatile organic matter method ", the filter core with molecular sieve structure of inspecting by ready samples is carried out filtration test.At specified aquifer yield 0m
3The time, through this filter core, filter core sees Table 1 to the clearance of test compound to running water with flow 0.19L/min.
The filter core with molecular sieve structure water examination result of table 1 embodiment of the invention 1
| Sequence number | The mensuration project | Mark-on influent density (μ g/L) | Filter back water concentration (μ g/L) | Clearance (%) |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | Mercury selenium beryllium barium chromium cadmium antimony chloroform bromofom chlorodibromomethane 1,1,1-trichloroethanes 1,1,2-trichloroethanes 1,2-dichloropropane 1,1,1,2-tetrachloroethanes 1,2-Bromofume vinyl chloride cis-1,2-dichloroethylene anti-form-1,2-dichloroethylene vinylidene chloride trichloro-ethylene tetrachloro-ethylene benzene toluene ethylbenzene | 8.7 9.3 9.2 14 19 9.0 9.6 9.63 10.3 11.2 8.17 11.3 9.28 9.09 11.0 9.61 8.17 8.70 8.20 9.04 9.90 8.85 9.27 10.0 | ＜0.2 ＜1 0.5 7 8 0.4 ＜0.5 ＜0.05 ＜0.18 ＜0.06 ＜0.08 ＜0.14 0.103 ＜0.11 ＜0.10 ＜0.19 ＜0.08 ＜0.08 ＜0.35 ＜0.09 ＜0.07 ＜0.03 ＜0.03 ＜0.04 | 98.9 94.6 94.6 50.0 57.9 95.6 97.4 99.7 99.1 99.7 99.5 99.4 99.4 99.4 99.5 99.0 99.5 99.5 97.9 99.5 99.6 99.8 99.8 99.8 |
| 25 26 27 28 29 30 31 32 33 34 35 36 | Chlorobenzene butachlor butylate Niran heptachlor Bravo 4,4 '-drip to drip her 4,4 '-DDT a-BHC 2,2 ', 3 ', 4, Tianjin is gone in the show of 6 '-pentachlorodiphenyl endrin | 12.1 5.10 2.28 1.36 1.68 3.00 0.75 0.66 8.93 1.09 1.24 4.10 | ＜0.05 ＜0.02 ＜0.008 ＜0.01 ＜0.01 ＜0.02 ＜0.003 ＜0.006 ＜0.02 ＜0.003 ＜0.03 ＜0.008 | 99.8 99.8 99.9 99.6 99.7 99.7 99.8 99.5 99.9 99.9 98.8 99.9 |
Claims (9)
1. filter core of removing agricultural chemicals in the drinking water or pesticide, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 100-300 zeolite powder 5-50 of 1,500,000-7,000,000 molecular weight
Activated carbon powder 50-200 attapulgite powder 10-80
Gas generation agent 5-100
2. a kind of filter core of removing agricultural chemicals in the drinking water or pesticide according to claim 1, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 150-200 zeolite powder 20-40 of 1,500,000-7,000,000 molecular weight
Activated carbon powder 100-150 attapulgite powder 20-60
Gas generation agent 20-70
3. a kind of filter core of removing agricultural chemicals in the drinking water or pesticide according to claim 2, it is formed by the feedstock production that comprises following parts by weight;
Polyethylene powder 150 zeolite powders 30 of 1,500,000-7,000,000 molecular weight
Activated carbon powder 100 attapulgite powder 40
Gas generation agent 30
4. a kind of filter core of removing agricultural chemicals in the drinking water or pesticide according to claim 1, wherein said activated carbon powder is the medicinal active powdered carbon, its order number is the 100-200 order.
5. a kind of filter core of removing agricultural chemicals in the drinking water or pesticide according to claim 4, the polyethylene powder of wherein said 1,500,000-7,000,000 molecular weight, molecular weight are 2,500,000-4,000,000, its order number is the 20-160 order.
6. a kind of filter core of removing agricultural chemicals in the drinking water or pesticide according to claim 5, wherein said gas generation agent is food-grade carbonic hydroammonium or Celogen Az or oxalic acid.
7. a kind of filter core of removing agricultural chemicals in the drinking water or pesticide according to claim 6, wherein said zeolite powder and attapulgite powder order number are the 100-250 order.
8. a kind of preparation method who removes the filter core of agricultural chemicals in the drinking water or pesticide according to claim 1, it may further comprise the steps;
Take by weighing each raw material by formula ratio, after the mixing and stirring, insert in the mould, at high temperature through sinter molding, the demoulding to the normal temperature of drying in the air promptly becomes the tubular structure filter core with regulation wall thickness and height of porous.
9. a kind of preparation method who removes the filter core of agricultural chemicals in the drinking water or pesticide according to claim 8, wherein said sintering temperature is at 200-300 ℃, and sintering time is 120-160 minute, dries in the air behind the sintering to the 40-60 ℃ of demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101706883A CN100444926C (en) | 2006-12-28 | 2006-12-28 | Filter core for removing agricultural chemical or pesticide from drinking water and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101706883A CN100444926C (en) | 2006-12-28 | 2006-12-28 | Filter core for removing agricultural chemical or pesticide from drinking water and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1994520A true CN1994520A (en) | 2007-07-11 |
| CN100444926C CN100444926C (en) | 2008-12-24 |
Family
ID=38249772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101706883A Active CN100444926C (en) | 2006-12-28 | 2006-12-28 | Filter core for removing agricultural chemical or pesticide from drinking water and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100444926C (en) |
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| CN101628222B (en) * | 2009-08-20 | 2011-12-07 | 蒋永锋 | Filtering medium for removing micro radioactive substances in water and preparation method thereof |
| CN101822923A (en) * | 2010-04-29 | 2010-09-08 | 奇迪电器集团有限公司 | Filter medium for removing chloroacetamide in drinking water and preparation method thereof |
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| CN103768841A (en) * | 2012-10-17 | 2014-05-07 | 单建民 | Manufacturing method of activated carbon filter |
| CN103463868A (en) * | 2013-06-20 | 2013-12-25 | 天长市天乐电器厂 | Active carbon air filter element and preparation method thereof |
| CN103463868B (en) * | 2013-06-20 | 2015-08-19 | 天长市天乐电器厂 | A kind of active carbon air filter element and preparation method thereof |
| CN104587984A (en) * | 2015-01-29 | 2015-05-06 | 江苏中翔网络科技有限公司 | Filtering medium for removing nitrate in drinking water, filter element and preparation method of filtering medium |
| CN104587959A (en) * | 2015-01-29 | 2015-05-06 | 慈溪市天泉电器科技有限公司 | Filter medium for removing endosulfan from water as well as filter element and preparation method of filter medium |
| CN107308920A (en) * | 2017-05-22 | 2017-11-03 | 福建省福灿环保科技有限公司 | One kind removes hexachloro-benzene filter medium, filter core and preparation method in drinking water |
| CN107349921A (en) * | 2017-09-07 | 2017-11-17 | 广州尊卓环保科技有限公司 | Filter medium, filter core and the preparation method of methacrylaldehyde in a kind of removal frying oil |
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