CN102126776A - Method for removing fluorions from mineral water by using food grade alkaline magnesium carbonate - Google Patents
Method for removing fluorions from mineral water by using food grade alkaline magnesium carbonate Download PDFInfo
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- CN102126776A CN102126776A CN 201110007729 CN201110007729A CN102126776A CN 102126776 A CN102126776 A CN 102126776A CN 201110007729 CN201110007729 CN 201110007729 CN 201110007729 A CN201110007729 A CN 201110007729A CN 102126776 A CN102126776 A CN 102126776A
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Abstract
The invention discloses a method for removing fluorions from mineral water by using food grade alkaline magnesium carbonate. In the method, fluorine is removed from mineral water by taking food grade alkaline magnesium carbonate as a fluorine removing agent. The method comprises the following operating steps of: uniformly mixing food grade alkaline magnesium carbonate powder with mineral water with the fluorine content of higher than the national standard in the mass ratio of 1:(62-1):125 by continuously stirring; keeping the temperature of the mineral water between 20 DEG C and 60 DEG C; continuously stirring for 2-8 hours; standing for 2-24 hours; and removing insoluble substances from water by filtering to obtain drinking mineral water of which the pH is 7.5, the fluorine content is accordant with the national standard, beneficial elements are effectively kept and Mg residual is lower than the value of 150 mg/L suggested by the world health organization (WHO).
Description
Technical field
The invention belongs to the method for removing fluorion in the mineral water with the food grade magnesium basic carbonate.
Background technology
All contain multiplely in the mineral water, simultaneously also can contain some the deleterious trace element of HUMAN HEALTH to the HUMAN HEALTH beneficial trace elements.Fluorine in the tap water is a double-edged sword, fluorinion concentration can effectively prevent carious tooth between 0.5～1.0mg/L the time, but if the long-term drinking fluorinion concentration surpasses the water of 2mg/L, will suffer from general chronic diseases such as dental fluorosis and skeletal fluorosis, even people's cranial nerve is diminished evil.The content of fluorion can not surpass 1.5mg/L in The World Health Organization's suggestion tap water, State Standard of the People's Republic of China (GB8537-2008) is 1.5mg/L to the fluorion limit value in the natural mineral water, hygienic standard (GB5749-2006) to Drinking Water then has more strict regulation, and the content of fluorion can not surpass 1.0mg/L.But in the mineral water that much has extraction value, the content of fluorine does not reach this requirement.
Though the way of fluorine is more in the removal tap water, scarcely be applicable to the situation of mineral water.Because from mineral water, remove fluorine, fluorine content is reduced to below the prescribed value of national standard, make the mineral water pH value after the processing constant substantially again, the loss of beneficial element is less and do not introduce harmful material.For example, utilizing the throwing out defluorination of aluminium salt or molysite, be relatively more commonly used and effective means, but this method not only can obviously change the pH value of water and introduce a large amount of sulfate radicals, also a large amount of beneficial elements in the water together can be removed.Also the someone adopt natural zeolite or through the natural zeolite of modification as sorbent material, remove fluorine in the tap water by adsorption, but because the natural zeolite quality discrepancy in the different places of production is very big, the fluorine unstable properties is fallen, natural zeolite or the harmful element kind in the natural zeolite of modification and stripping quantity thereof are also wayward, also there is the use cost problem of higher simultaneously, so this method is not the desirable defluorination method that mineral water is produced.More about the research report of removing fluorine in the water with activated magnesia (MgO) recently, someone has also carried out residual animal physiological toxicity and the cytogenetic toxicity test of magnesium, their result of study shows: this defluorinating agent has good fluoro droping effect, the residual HUMAN HEALTH that not only do not influence of magnesium in the water after treatment, also the toxicity to fluorine has antagonistic action.In Chinese patent application " a kind of preparation method of drinking water magnesian defluorinating agent " (application number 200910074805.X), a kind of magnesian defluorinating agent is disclosed, try out in the Drinking Water fluoro droping effect obvious, but this document does not provide the variation of pH value in the water after handling with this defluorinating agent and the damaed cordition of beneficial element; From its preparation process condition and examination and test of products report analysis, the effective constituent of this defluorinating agent is magnesium oxide (MgO).And our experiment shows, is obvious weakly alkaline with the magnesium oxide treated water, pH ≈ 10, mouthfeel is relatively poor, if use it for the defluorination of mineral water, also can cause the heavy losses of the beneficial element such as B, Si, Sr in the mineral water, thereby influence the quality of mineral water.
Summary of the invention
The method that the technical problem to be solved in the present invention provides a kind ofly can not only effectively reduce content of fluoride ion in the mineral water, can also keep important nutritive element in the mineral water, the pH value is bordering on neutrality, the residual qualified usefulness food grade magnesium basic carbonate of Mg is removed fluorion in the mineral water.
The present invention solves the problems of the technologies described above with following technical scheme:
Under constantly stirring, the mineral water that food grade magnesium basic carbonate powder and fluorine content is higher than national standard, by mass ratio is that 1: 62～1: 125 mixed is even, keep the mineral water temperature in 20～60 ℃ of scopes, continuously stirring 2～8 hours, after leaving standstill 2～24 hours, remove by filter the insolubles in the water, can obtain pH=7.5, fluorine content and meet that national standard, beneficial element are effectively kept, the residual drinking mineral water that is lower than the recommended value 150mg/L of The World Health Organization (WHO) of Mg.
Use technology of the present invention, remove fluorion in the mineral water as defluorinating agent, make fluorion (F in the mineral water with the food grade magnesium basic carbonate
-) be reduced to below the standard GB 8537-2008 limit value of mineral water, keep in the mineral water important nutritive element such as metasilicic acid, metaboric acid, lithium ion and strontium ion etc. not to lose simultaneously or few loss, mineral water pH value after the processing is 7.5, the residual recommended value 150mg/L that is lower than The World Health Organization (WHO) to Mg content in the drinking-water of Mg.
Embodiment
Embodiment 1
Get 1 liter of pending mineral water, keep 20 ℃ of water temperatures, under constantly stirring, add 16 gram food grade magnesium basic carbonate powder, continue to stir after 2 hours, left standstill 8 hours, remove by filter the insolubles in the water, obtain pH=7.5, and fluorion (F
-) concentration is less than the mineral water of 1.5mg/L, before and after handling in the mineral water principal element content as shown in table 1.
Table 1
Embodiment 2
Get 1 liter of pending mineral water, keep 30 ℃ of water temperatures, under constantly stirring, add 8 gram food grade magnesium basic carbonate powder, continue to stir after 6 hours, left standstill 16 hours, remove by filter the insolubles in the water, obtain pH=7.5, and fluorion (F
-) concentration is less than the mineral water of 1.5mg/L, before and after handling in the mineral water principal element content as shown in table 2.
Table 2
Embodiment 3
Get 1 liter of pending mineral water, keep 50 ℃ of water temperatures, under constantly stirring, add 12 gram food grade magnesium basic carbonate powder, continue to stir after 4 hours, left standstill 12 hours, remove by filter the insolubles in the water, obtain pH=7.5, and fluorion (F
-) concentration is less than the mineral water of 1.5mg/L, before and after handling in the mineral water principal element content as shown in table 3.
Table 3
Embodiment 4
Get 1 liter of pending mineral water, keep 40 ℃ of water temperatures, under constantly stirring, add 10 gram food grade magnesium basic carbonate powder, continue to stir after 8 hours, left standstill 20 hours, remove by filter the insolubles in the water, obtain pH=7.5, and fluorion (F
-) concentration is less than the mineral water of 1.5mg/L, before and after handling in the mineral water principal element content as shown in table 4.
Table 4
Embodiment 5
Get 1 liter of pending mineral water, keep 60 ℃ of water temperatures, under constantly stirring, add 14 gram food grade magnesium basic carbonate powder, continue to stir after 5 hours, left standstill 24 hours, remove by filter the insolubles in the water, obtain pH=7.5, and fluorion (F
-) concentration is less than the mineral water of 1.5mg/L, before and after handling in the mineral water principal element content as shown in table 5.
Table 5
Claims (1)
1. a food grade magnesium basic carbonate is removed the method for fluorion in the mineral water, it is characterized in that this method use food grade magnesium basic carbonate falls fluorine as defluorinating agent to mineral water and handles, its operation steps is: under constantly stirring, the mineral water that food grade magnesium basic carbonate powder and fluorine content is higher than the national standard limit value, by mass ratio is that 1: 62～1: 125 mixed is even, keep the mineral water temperature in 20～60 ℃ of scopes, continuously stirring 2～8 hours, after leaving standstill 2～24 hours, remove by filter the insolubles in the water, can obtain pH=7.5, fluorine content meets national standard, beneficial element is effectively kept, the residual drinking mineral water that is lower than World Health Organization's recommended value of Mg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110007729 CN102126776A (en) | 2011-01-14 | 2011-01-14 | Method for removing fluorions from mineral water by using food grade alkaline magnesium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110007729 CN102126776A (en) | 2011-01-14 | 2011-01-14 | Method for removing fluorions from mineral water by using food grade alkaline magnesium carbonate |
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| CN102126776A true CN102126776A (en) | 2011-07-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301813A (en) * | 2013-06-19 | 2013-09-18 | 中国科学院合肥物质科学研究院 | Metal organic framework structure-based fluorine removal agent and preparation method thereof |
| CN103864078A (en) * | 2012-12-17 | 2014-06-18 | 沁阳市昊达实业有限公司 | A method of removing residue hydrogen fluoride in fluosilicic acid |
| CN106746088A (en) * | 2016-12-23 | 2017-05-31 | 程艳青 | A kind of processing system and handling process of fluorine-containing trade effluent |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB786647A (en) * | 1955-01-25 | 1957-11-20 | Robert Ballantyne Adamson | Improvements in or relating to the purification of water |
| JPS55129189A (en) * | 1979-03-30 | 1980-10-06 | Seiji Hashimoto | Treating method for waste water containing fluorine ion and phosphoric acid ion using carbonate-added carbide |
| CN86201682U (en) * | 1986-03-29 | 1987-05-20 | 天津市塘沽区卫生局 | Automatic controlled fluorine remover for drinking water |
| JP2005342578A (en) * | 2004-06-01 | 2005-12-15 | Konoshima Chemical Co Ltd | Fluorine adsorbent and production method |
| WO2006022230A1 (en) * | 2004-08-24 | 2006-03-02 | Aquatech Corporation | Method for treating fluorine-containing wastewater and equipment for treating fluorine-containing wastewater |
| CN101597103A (en) * | 2009-06-29 | 2009-12-09 | 和顺银圣化工有限公司 | A kind of preparation method of drinking water magnesian defluorinating agent |
-
2011
- 2011-01-14 CN CN 201110007729 patent/CN102126776A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB786647A (en) * | 1955-01-25 | 1957-11-20 | Robert Ballantyne Adamson | Improvements in or relating to the purification of water |
| JPS55129189A (en) * | 1979-03-30 | 1980-10-06 | Seiji Hashimoto | Treating method for waste water containing fluorine ion and phosphoric acid ion using carbonate-added carbide |
| CN86201682U (en) * | 1986-03-29 | 1987-05-20 | 天津市塘沽区卫生局 | Automatic controlled fluorine remover for drinking water |
| JP2005342578A (en) * | 2004-06-01 | 2005-12-15 | Konoshima Chemical Co Ltd | Fluorine adsorbent and production method |
| WO2006022230A1 (en) * | 2004-08-24 | 2006-03-02 | Aquatech Corporation | Method for treating fluorine-containing wastewater and equipment for treating fluorine-containing wastewater |
| CN101597103A (en) * | 2009-06-29 | 2009-12-09 | 和顺银圣化工有限公司 | A kind of preparation method of drinking water magnesian defluorinating agent |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103864078A (en) * | 2012-12-17 | 2014-06-18 | 沁阳市昊达实业有限公司 | A method of removing residue hydrogen fluoride in fluosilicic acid |
| CN103864078B (en) * | 2012-12-17 | 2016-02-24 | 沁阳市昊达实业有限公司 | A kind of method removing residual fluorinated hydrogen in silicofluoric acid |
| CN103301813A (en) * | 2013-06-19 | 2013-09-18 | 中国科学院合肥物质科学研究院 | Metal organic framework structure-based fluorine removal agent and preparation method thereof |
| CN103301813B (en) * | 2013-06-19 | 2016-08-10 | 中国科学院合肥物质科学研究院 | A kind of defluorinating agent based on metallo-organic framework and preparation method thereof |
| CN106746088A (en) * | 2016-12-23 | 2017-05-31 | 程艳青 | A kind of processing system and handling process of fluorine-containing trade effluent |
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Application publication date: 20110720 |