CN1994518A - Filter core for removing lead and mercury from drinking water and preparation method thereof - Google Patents
Filter core for removing lead and mercury from drinking water and preparation method thereof Download PDFInfo
- Publication number
- CN1994518A CN1994518A CN 200610170661 CN200610170661A CN1994518A CN 1994518 A CN1994518 A CN 1994518A CN 200610170661 CN200610170661 CN 200610170661 CN 200610170661 A CN200610170661 A CN 200610170661A CN 1994518 A CN1994518 A CN 1994518A
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- Prior art keywords
- filter core
- drinking water
- mercury
- powder
- molecular weight
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- 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.)
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Links
- 239000003651 drinking water Substances 0.000 title claims abstract description 28
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 28
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims description 40
- 229910052753 mercury Inorganic materials 0.000 title claims description 40
- 238000002360 preparation method Methods 0.000 title claims description 12
- 238000005245 sintering Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 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 23
- -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
- 229920000573 polyethylene Polymers 0.000 claims description 12
- 239000002808 molecular sieve Substances 0.000 claims description 11
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 11
- 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
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 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 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 231100000167 toxic agent Toxicity 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 206010029240 Neuritis Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 210000005013 brain tissue Anatomy 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000002607 hemopoietic effect Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- DNHVXYDGZKWYNU-UHFFFAOYSA-N lead;hydrate Chemical compound O.[Pb] DNHVXYDGZKWYNU-UHFFFAOYSA-N 0.000 description 1
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 201000001119 neuropathy Diseases 0.000 description 1
- 231100000862 numbness Toxicity 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation 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
- 238000012360 testing method Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to a filter element which can remove the lead and Hg 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 lead and Hg at 73-96%.
Description
Technical field
The present invention relates to a kind of filter core, particularly relate to a kind of filter core of removing Pb in Drinking Water and mercury and preparation method thereof.
Background technology
Plumbous and mercury is to human body and the very harmful extremely toxic substance of animal.Modern industry and communications develop rapidly, and the thing followed is the discharging wantonly of a large amount of dirts and waste gas.Lead is mainly derived from automobile exhaust gas and industrial emissions, and family's Corrosion of Pipeline also causes the drinking water lead tolerance to increase easily.After lead enters human body, but major part accumulate in people's bone, infringement bone hemopoietic system and nervous system, clinical manifestation is anaemia, peripheral neuritis, motion and cacesthesia occur.Mercury (Hg) and compound thereof belong to extremely toxic substance, can accumulate in vivo.Mercury in the water body is mainly derived from industrial wastewaters such as precious metal smelting, instrument and meter manufacturing, salt electrolysis, chemical industry, agricultural chemicals, plastics.Mercury mainly shows as headache, dizziness, extremity numbness and pain etc. to the harm of human body in the water body, and severe patient is understood injured brain tissue even impelled death.
At present, industrially mainly remove mercury in the waste water by chemical precipitation method and ion-exchange.But, adopt the one-level treatment process to be difficult to reach emission request, and operating cost is very high.Water treatment effect is relevant with multiple factor, often several method is combined in the actual engineering, thereby reaches cost-effective removal of mercury purpose.As adopt chemical precipitation method to handle as the one-level of mercury-containing waste water, and remove most of mercury ion, adopt flocculation sediment and filtration method that mercury-containing waste water is carried out the secondary advanced treating.This method complex process, the processing cost height is not suitable for household drinking water and handles.And plumbous removal method exists similar difficulty and problem equally.
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, especially can effectively remove the filter core of plumbous and mercury, is highly suitable for being subjected to lead, the serious water source of mercury pollution.
An object of the present invention is to provide a kind of filter core of removing Pb in Drinking Water and mercury.
Another object of the present invention provides the preparation method of the filter core of described removal Pb in Drinking Water and mercury.
The objective of the invention is to be achieved through the following technical solutions:
A kind of filter core of removing Pb in Drinking Water and mercury, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 100-300 of activated carbon powder 50-200 1,500,000-7,000,000 molecular weight
4A molecular sieve powder 5-50 gas generation agent 10-200
Preferably, a kind of filter core of removing Pb in Drinking Water and mercury, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 130-200 of activated carbon powder 90-150 1,500,000-7,000,000 molecular weight
4A molecular sieve powder 15-35 gas generation agent 20-150
More preferably, a kind of filter core of removing Pb in Drinking Water and mercury, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 150 of activated carbon powder 100 150 ten thousand-7,000,000 molecular weight
4A molecular sieve powder 30 gas generation agents 20
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 metals such as lead and mercury, and its order number is the 40-200 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 20-200 order, and molecular weight is 1,500,000-7,000,000, and preferred, molecular weight is 2,500,000-4,000,000.
4A molecular sieve powder described in the present invention also has very strong suction-operated to heavy metal lead, mercury.
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 Pb in Drinking Water and mercury 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 Pb in Drinking Water and mercury 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 Pb in Drinking Water and mercury of the present invention has in purifying drinking water, exempts exceed standard lead and the mercury effect that generation endangers to human body in the drinking water, is fit to very much the home terminal drinking water treatment.After testing, this filter core to the clearance of Pb in Drinking Water and mercury between 73%-96%.
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
Medicinal active powdered carbon (160 order) 100g
The polyethylene powder of 4,000,000 molecular weight (120 order) 150g
4A molecular sieve powder 30g
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 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
Medicinal active powdered carbon (100 order) 50g
The polyethylene powder of 5,000,000 molecular weight (40 order) 100g
4A molecular sieve powder 40g
Food-grade carbonic hydroammonium 150g
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 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
Medicinal active powdered carbon (60 order) 180g
The polyethylene powder of 2,500,000 molecular weight (180 order) 100g
4A molecular sieve powder 20g
Celogen Az 60g
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
Medicinal active powdered carbon (120 order) 80g
The polyethylene powder of 3,000,000 molecular weight (120 order) 250g
4A molecular sieve powder 10g
Oxalic acid 40g
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 plumbous and mercury in the drinking-water 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 2005KF0896 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 8th, 2005
Assay:
According to " Drinking Water water quality treater safe and sanitary and functional evaluation scope _ general water quality treater " (2001), the structure filtering element (cartridge) of the embodiment of the invention 1 is carried out the filter element filtering performance test.At specified aquifer yield 2.00m
3In, running water is with flow 1.00L/min this filtering element (cartridge) 0m that flows through
3, 0.50m
3, 1.00m
3, 1.50m
3, 2.00m
3The time, this filter core sees Table 1-5 to clearance plumbous, mercury
Water examination result (0m before and after the filter core of table 1 embodiment of the invention 1 filters
3)
| The mensuration project | Unit | The former water of mark-on | Filter the back water outlet | Clearance (%) | Clearance requires (%) |
| Plumbous mercury | mg/L mg/L | 0.0385 0.0075 | ＜0.0005 ＜0.0002 | 99.4 98.7 | / / |
Water examination result (0.50m before and after the filter core of table 2 embodiment of the invention 1 filters
3)
| The mensuration project | Unit | The former water of mark-on | Filter the back water outlet | Clearance (%) | Clearance requires (%) |
| Plumbous mercury | mg/L mg/L | 0.0090 0.0078 | ＜0.0015 ＜0.0002 | 83.3 98.7 | / / |
Water examination result (1.00m before and after the filter core of table 3 embodiment of the invention 1 filters
3)
| The mensuration project | Unit | The former water of mark-on | Filter the back water outlet | Clearance (%) | Clearance requires (%) |
| Plumbous mercury | mg/L mg/L | 0.0086 0.0077 | ＜0.0023 ＜0.0002 | 73.3 98.7 | / / |
Water examination result (1.50m before and after the filter core of table 4 embodiment of the invention 1 filters
3)
| The mensuration project | Unit | The former water of mark-on | Filter the back water outlet | Clearance (%) | Clearance requires (%) |
| Plumbous mercury | mg/L mg/L | 0.0073 0.0078 | ＜0.0007 ＜0.0002 | 90.4 98.7 | / / |
Water examination result (2.00m before and after the filter core of table 5 embodiment of the invention 1 filters
3)
| The mensuration project | Unit | The former water of mark-on | Filter the back water outlet | Clearance (%) | Clearance requires (%) |
| Plumbous mercury | mg/L mg/L | 0.0385 0.0075 | ＜0.0005 ＜0.0002 | 96.2 98.8 | / / |
Claims (8)
1. filter core of removing Pb in Drinking Water and mercury, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 100-300 of activated carbon powder 50-200 1,500,000-7,000,000 molecular weight
4A molecular sieve powder 5-50 gas generation agent 10-200
2. a kind of filter core of removing Pb in Drinking Water and mercury according to claim 1, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 130-200 of activated carbon powder 90-150 1,500,000-7,000,000 molecular weight
4A molecular sieve powder 15-35 gas generation agent 20-150
3. a kind of filter core of removing Pb in Drinking Water and mercury according to claim 2, it is formed by the feedstock production that comprises following parts by weight;
The polyethylene powder 150 of activated carbon powder 100 150 ten thousand-7,000,000 molecular weight
4A molecular sieve powder 30 gas generation agents 20
4. a kind of filter core of removing Pb in Drinking Water and mercury according to claim 1, wherein said activated carbon powder is the medicinal active powdered carbon, its order number is the 40-200 order.
5. a kind of filter core of removing Pb in Drinking Water and mercury 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 20-200 order.
6. a kind of filter core of removing Pb in Drinking Water and mercury according to claim 5, wherein said gas generation agent are food-grade carbonic hydroammonium or Celogen Az or oxalic acid.
7. a kind of preparation method who removes the filter core of Pb in Drinking Water and mercury 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.
8. a kind of preparation method who removes the filter core of Pb in Drinking Water and mercury according to claim 7, 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 |
|---|---|---|---|
| CNB2006101706614A CN100464817C (en) | 2006-12-27 | 2006-12-27 | Filter core for removing lead and mercury from drinking water and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101706614A CN100464817C (en) | 2006-12-27 | 2006-12-27 | Filter core for removing lead and mercury from drinking water and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1994518A true CN1994518A (en) | 2007-07-11 |
| CN100464817C CN100464817C (en) | 2009-03-04 |
Family
ID=38249770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101706614A Active CN100464817C (en) | 2006-12-27 | 2006-12-27 | Filter core for removing lead and mercury from drinking water and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100464817C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020337A (en) * | 2009-09-17 | 2011-04-20 | 北京久和开源营养科技有限公司 | Water purifying filter element and preparation method thereof |
| CN101569856B (en) * | 2008-04-30 | 2011-06-01 | 周奇迪 | Filtering medium for removing metallic lead in water and preparation method thereof |
| CN102294151A (en) * | 2011-06-29 | 2011-12-28 | 无锡光旭新材料科技有限公司 | Biomass filtering material |
| CN101569855B (en) * | 2008-04-30 | 2012-01-04 | 奇迪电器集团有限公司 | Filtering medium for removing perchlorate in water and preparation method thereof |
| CN102698505A (en) * | 2012-05-23 | 2012-10-03 | 北京佳康尔水处理技术有限公司 | Method for preparing 13x molecular sieve filtering element for purifying drinking water |
| CN101898117B (en) * | 2009-05-25 | 2013-01-02 | 奇迪电器集团有限公司 | Filter medium, preparation method thereof, filter element, water purifying plant and water dispenser |
| CN104028042A (en) * | 2014-05-19 | 2014-09-10 | 梁晓 | Filtering medium for removing mercury in water and preparation method thereof |
| CN104083944A (en) * | 2014-06-24 | 2014-10-08 | 潘峰 | Filtering medium for removing lead from drinking water, filter core and preparation method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055869C (en) * | 1997-12-12 | 2000-08-30 | 马昆 | Structural filter element for purifying water and preparing process thereof |
| US20060000763A1 (en) * | 2004-06-30 | 2006-01-05 | Rinker Edward B | Gravity flow carbon block filter |
| CN1329114C (en) * | 2004-12-24 | 2007-08-01 | 上海化工研究院 | Formulation of dry filter core for refrigerating system |
-
2006
- 2006-12-27 CN CNB2006101706614A patent/CN100464817C/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569856B (en) * | 2008-04-30 | 2011-06-01 | 周奇迪 | Filtering medium for removing metallic lead in water and preparation method thereof |
| CN101569855B (en) * | 2008-04-30 | 2012-01-04 | 奇迪电器集团有限公司 | Filtering medium for removing perchlorate in water and preparation method thereof |
| CN101898117B (en) * | 2009-05-25 | 2013-01-02 | 奇迪电器集团有限公司 | Filter medium, preparation method thereof, filter element, water purifying plant and water dispenser |
| CN102020337A (en) * | 2009-09-17 | 2011-04-20 | 北京久和开源营养科技有限公司 | Water purifying filter element and preparation method thereof |
| CN102294151A (en) * | 2011-06-29 | 2011-12-28 | 无锡光旭新材料科技有限公司 | Biomass filtering material |
| CN102294151B (en) * | 2011-06-29 | 2013-06-12 | 无锡光旭新材料科技有限公司 | Biomass filtering material |
| CN102698505A (en) * | 2012-05-23 | 2012-10-03 | 北京佳康尔水处理技术有限公司 | Method for preparing 13x molecular sieve filtering element for purifying drinking water |
| CN102698505B (en) * | 2012-05-23 | 2015-08-26 | 北京佳康尔水处理技术有限公司 | A kind of preparation method of 13x molecular sieve filter element of purifying drinking water |
| CN104028042A (en) * | 2014-05-19 | 2014-09-10 | 梁晓 | Filtering medium for removing mercury in water and preparation method thereof |
| CN104028042B (en) * | 2014-05-19 | 2016-01-27 | 广西北流桂丰源农业科技有限公司 | A kind of filter medium for removing mercury in water and preparation method thereof |
| CN104083944A (en) * | 2014-06-24 | 2014-10-08 | 潘峰 | Filtering medium for removing lead from drinking water, filter core and preparation method |
| CN104083944B (en) * | 2014-06-24 | 2016-01-13 | 潘峰 | For removing the filter medium of Pb in Drinking Water, filter core and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100464817C (en) | 2009-03-04 |
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