CN100488886C - Filter medium for regulating PH value of drinking water and its preparation process and the filter element therewith - Google Patents
Filter medium for regulating PH value of drinking water and its preparation process and the filter element therewith Download PDFInfo
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- CN100488886C CN100488886C CNB200710123059XA CN200710123059A CN100488886C CN 100488886 C CN100488886 C CN 100488886C CN B200710123059X A CNB200710123059X A CN B200710123059XA CN 200710123059 A CN200710123059 A CN 200710123059A CN 100488886 C CN100488886 C CN 100488886C
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Abstract
The filter medium is prepared with ultrahigh molecular weight polyethylene in 50-75 wt%, active carbon in 20-45 wt% and calcined dolomite powder in 1-8 wt%, and through mixing, sinteing at 180-280 deg.c for 60-180 min and cooling. The filter medium and the filter element therewith can regulate pH value of drinking water. The present invention is used in purifying drinking water, improving water quality and regulating pH value of drinking water to make it in slight alkaline, and has high efficiency, no secondary pollution, use convenience and low cost.
Description
Technical field
The present invention relates to a kind of filtration medium and preparation method thereof, also relate to the filter core that constitutes by this filtration medium, also relate to a kind of method that adopts filtration medium of the present invention or filter core to regulate the tap water pH value.
Background technology
The intravital pH value of normal people is weakly alkaline between 7.35～7.45.Because modern's diet is more and more meticulousr, often meat isogonic acidic substance are added environmental pollution and are caused the water quality acidifying, and it is neutral or acid that people's physique begins to be tending towards.No matter blood in any position, all should be weakly alkaline.If it is neutral that blood is, we just can't survive; If blood is the tart words, will cause various diseases even death.
One of standard of the good water that The World Health Organization (WHO) proposes is exactly that pH value is weakly alkaline.The long-term drinking alkalescent water can improve the human body acidic substance, enhances metabolism, and reduces the generation of disease.The tap water that present people are adopted is neutral or weakly acidic mostly, does not meet very much healthy needs.The pH value of best tap water generally is advisable with PH=6.5～8.5.
Summary of the invention
The filter core that the technical problem to be solved in the present invention is to provide a kind of easy to use, non-secondary pollution, high efficiency filtration medium and preparation method thereof and is made by this filtration medium.The present invention also provides a kind of method that adopts above-mentioned filtration medium or filter core to regulate the tap water pH value.
In order to solve the problems of the technologies described above, the present invention by the following technical solutions:
A kind of preparation method of filter medium comprises
Ground dolomite is broken to particle diameter below 840 microns, and 350～750 ℃ of temperature lower calcinations 1～6 hour, cooling obtained ground dolomite;
It is gac by weight percentage: ultrahigh molecular weight polyethylene(UHMWPE): the ratio of ground dolomite=20～45%:50～75%:1～8%, with ground dolomite and ultrahigh molecular weight polyethylene(UHMWPE) and gac uniform mixing, at 60～180 minutes postcooling of 180～280 ℃ of sintering temperatures.
Rhombspar is an essential mineral composition of forming dolomite and dolomitic limestone, and the ideal chemical structural formula is CaMg (CO
3)
2, crystal belongs to the carbonate minerals of trigonal system.The crystalline structure and the calcite of rhombspar are similar, and crystalline form is a rhombohedron, and crystal face often bends to saddle.
Publication number is that the patent of invention of CN1082033C has been reported a kind of method of regulating the tap water pH value with natural crystal mixing filtrate, with particle diameter is the natural dolomite particles of 0.2-0.5cm and granular carbon by the mixed of 4:1 (volume ratio) filtration unit of packing into, is directly used in the filtration of water.Because faint ionization takes place in water carbonate, equation is as follows:
Make tap water be weakly alkaline by ionizing event.Reach the effect of PH=7～9, just must use more dolomite particles to regulate.But rhombspar contains Mg
2+, Ca
2+Positively charged ion, Mg when regulating pH value
2+, Ca
2+Also can enter into water, thereby influence mouthfeel, the increase water hardness of drinking.
In the present invention, chemical reaction takes place in ground dolomite calcining back, and carbonate decomposition becomes oxide compound, and reaction equation is as follows:
CaMg(CO
3)
2→CaO·MgO+CO
2↑ (2)
Calcining back ground dolomite becomes pink colour by white, but the crystalline structure of mineral do not change, and calcining back ground dolomite still keeps the trigonal system structure, with after water contact, and the generation chemical reaction, equation is as follows:
CaO·MgO+2H
2O→CaMg(OH)
4 (3)
Wherein, (OH)
-Negatively charged ion has occupied the CO in the dolomite structure
3 2-Anionic position is in filtration medium of making and filter core, (OH)
-Ion by with water in negatively charged ion generation ion exchange, regulate the pH value of tap water.Because the addition less than 10% of ground dolomite in the filtration medium, and (OH)
-Ion is by the micropore of filtration medium and duct, has an effect Mg by ion-exchange
2+, Ca2
+Ion is fixed in the lattice of DOLOMITE CRYSTALS, and its process that enters in the water has obtained inhibition, thereby can not influence the mouthfeel and the hardness of tap water.
As preferably, the calcining temperature of rhombspar is 350～550 ℃, and the particle size range that ground dolomite is chosen is 250～420 microns.Rhombspar after the pulverizing can be in calcining after the branch that sieves obtains the particle size range of required ground dolomite.
As preferably, the molecular weight of ultrahigh molecular weight polyethylene(UHMWPE) is 250～4,000,000, and particle diameter is 74～350 microns.
The polyethylene of General Definition 1,500,000～7,000,000 is a ultrahigh molecular weight polyethylene(UHMWPE), preferred 250～4,000,000 the ultrahigh molecular weight polyethylene(UHMWPE) of the present invention.Compare with low molecular weight polyethylene, a notable feature is that ultrahigh molecular weight polyethylene(UHMWPE) has powerful electrostatic adsorption, trickle, superfine particle that adsorbable micro-filtration can not block.
As preferably, gac is that particle diameter is 47～200 microns a medical activated carbon.
Gac can efficiently adsorb organism, heavy metal, the heterochromatic peculiar smell in the drinking-water, selects for use medical activated carbon can guarantee that filtration medium is directly used in the processing of tap water.
Practical experience shows, gac mixes with ultrahigh molecular weight polyethylene(UHMWPE) to use and can produce synergistic effect, and its filtration, adsorption effect can be more remarkable, and is not only the simple superposition of both performances.
The filtration of filtration medium, adsorptive power also have much relations with the particle diameter of gac, and particle diameter is excessive, particulate contact reacts area is reduced, and particle diameter is too small meticulous, can influence the sintering effect or the porosity of filtration medium.Practice shows, the particle diameter of gac is in 47～200 micrometer ranges, and the difference between particle grain size continuous distribution and the particle diameter is not more than under 50% the situation, can obtain better effect.
The present invention also provides following technical scheme: prepare filtration medium with above-mentioned method, this filtration medium is used to make filter core; Described filtration medium and filter core can be used for regulating the pH value of tap water.
The present invention is used for purifying drinking water, improves water quality, regulates the pH value of tap water, makes tap water be weakly alkaline, meets human body and drinks.The invention has the advantages that and realized non-secondary pollution, be used to regulate the tap water pH value expeditiously, and the filter core of making is easy to use, with low cost.
Embodiment
For further understanding technical characterictic of the present invention and content, be elaborated below in conjunction with embodiment.
For clearer description the present invention, in specific embodiment, adopted the unit of order number (Mesh).It is generally acknowledged that order is meant the number in every square of hole on the inch screen cloth, except the eyelet of expression screen cloth, it is used to represent to pass through the particle diameter of the particle of screen cloth simultaneously, and the order number is high more, and particle diameter is more little.The present invention is with reference to the data synopsis (table 1) of order number in the following table and granularity.
Table 1 particle diameter unit: μ m (micron)
| The order number | Particle diameter μ m | The order number | Particle diameter μ m | The order number | Particle diameter μ m | The order number | Particle diameter μ m |
| 25 | 710 | 50 | 297 | 140 | 104 | 325 | 44 |
| 30 | 590 | 60 | 250 | 170 | 89 | 400 | 38 |
| 35 | 500 | 80 | 178 | 200 | 74 | 460 | 30 |
| 40 | 420 | 100 | 150 | 230 | 61 | 540 | 26 |
| 45 | 350 | 120 | 124 | 270 | 53 | 650 | 21 |
Embodiment
Take by weighing the natural rhombspar that originates in Huairou, Beijing, pulverize the back to 35 orders, put into saggar, 450 ℃ of temperature lower calcinations were cooled to room temperature after 3 hours in tunnel furnace, and are standby.
It is that 40～60 orders (can be by 40 purpose sieve apertures but cannot pass through 60 purpose sieve apertures by particle that granularity is got in screening, below identical) ground dolomite 15 gram, getting granularity is 140～170 purpose medical activated carbons, 100 grams, molecular weight is 2,500,000, granularity is 100～140 purpose ultrahigh molecular weight polyethylene(UHMWPE)s, 200 grams, put into the agitator that is provided with cooling jacket, after stirring 90 minutes at a slow speed, the taking-up mixture is packed in the mould, extrusion molding, at 245 ℃ of sintering temperatures after 150 minutes, be cooled to 60 ℃ of demouldings, can become the filter core of many minute apertures.
After testing, using the filter core of the present invention's preparation can be pH value that the tap water of 5.0～6.0 slant acidity is adjusted to 7.4～7.9, be fit to very much the processing of home terminal tap water, can well purify water, the pH value of water can be adjusted to the weakly alkaline healthy water that suitable human body is drunk again.
More than filtration medium provided by the present invention and preparation method thereof and the filter core made by this filtration medium are described in detail.Used specific embodiment in this specification sheets principle of the present invention and embodiment have been set forth, for one of ordinary skill in the art, according to the thought of the present invention part that may in implementation process, can change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention.
Claims (9)
1, a kind of preparation method of filter medium comprises
It is below 840 microns that ground dolomite is broken to particle diameter, and 350～750 ℃ of temperature lower calcinations 1～6 hour, cooling obtained ground dolomite;
It is gac by weight percentage: ultrahigh molecular weight polyethylene(UHMWPE): the ratio of ground dolomite=20～45%:50～75%:1～8%, with ground dolomite and ultrahigh molecular weight polyethylene(UHMWPE) and gac uniform mixing, at 60～180 minutes postcooling of 180～280 ℃ of sintering temperatures.
2, preparation method according to claim 1, the calcining temperature of rhombspar are 350～550 ℃.
3, preparation method according to claim 1, the particle diameter of ground dolomite is 250～420 microns.
4, preparation method according to claim 1, the molecular weight of ultrahigh molecular weight polyethylene(UHMWPE) is 250～4,000,000.
5, preparation method according to claim 4, the particle diameter of ultrahigh molecular weight polyethylene(UHMWPE) is 74～350 microns.
6, preparation method according to claim 1, gac is that particle diameter is 47～200 microns a medical activated carbon.
7, the filtration medium that obtains of preparation method according to claim 1.
8, the filter core that constitutes by the described filtration medium of claim 7.
9, a kind of method of regulating the tap water pH value comprises and uses described filtration medium of claim 7 or the described filter core of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710123059XA CN100488886C (en) | 2007-06-22 | 2007-06-22 | Filter medium for regulating PH value of drinking water and its preparation process and the filter element therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710123059XA CN100488886C (en) | 2007-06-22 | 2007-06-22 | Filter medium for regulating PH value of drinking water and its preparation process and the filter element therewith |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101066787A CN101066787A (en) | 2007-11-07 |
| CN100488886C true CN100488886C (en) | 2009-05-20 |
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ID=38879509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710123059XA Expired - Fee Related CN100488886C (en) | 2007-06-22 | 2007-06-22 | Filter medium for regulating PH value of drinking water and its preparation process and the filter element therewith |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071400B (en) * | 2013-01-05 | 2015-11-25 | 宁波爱去欧净水设备科技有限公司 | A kind of production method of microporous barrier sintered filter core |
| CN107912670A (en) * | 2017-10-10 | 2018-04-17 | 张宏路 | A kind of mineral matter drink and preparation method thereof |
| CN109734219B (en) * | 2019-03-26 | 2021-01-15 | 江西零真生态环境集团有限公司 | Domestic sewage treatment and phosphorus recovery method |
| CN113577907A (en) * | 2021-07-17 | 2021-11-02 | 山东同济测试科技股份有限公司 | Filter material, filter element and application thereof |
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2007
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| CN101066787A (en) | 2007-11-07 |
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