CN101696064B - Process for purifying high fluorine and high sulfuric acid brine - Google Patents
Process for purifying high fluorine and high sulfuric acid brine Download PDFInfo
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- CN101696064B CN101696064B CN200910117529A CN200910117529A CN101696064B CN 101696064 B CN101696064 B CN 101696064B CN 200910117529 A CN200910117529 A CN 200910117529A CN 200910117529 A CN200910117529 A CN 200910117529A CN 101696064 B CN101696064 B CN 101696064B
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- fluorine
- molecular sieve
- sulfuric acid
- water
- purifying
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Abstract
The invention relates to a process for purifying high fluorine and high sulfuric acid brine. The process sequentially comprises the following steps: colation, weak acid ion exchange, weak base ion exchange, pH value regulation, filtering of a first level defluoridation molecular sieve and filtering of a secondary level defluoridation molecular sieve. The invention has simple equipment requirement, easy obtainment of raw materials, long service life and low cost and is particularly suitable for the large-area use of water in rural areas, and the larger the water quantity is, the lower the cost is.
Description
Technical field:
The invention belongs to water technology, particularly a kind of process for purifying high fluorine and high sulfuric acid brine.
Background technology:
Ningxia most of areas underground water fluorine content and vitriol are higher, general underground water fluorine content 3.30mg/L, and about sulfur-bearing hydrochlorate 287mg/L, even some area is higher.After drinking, the water that fluorine content is high is prone to cause fluorosis.
Endemic fluorine poisoning is the change that long-term excessive absorption fluorine causes the body chronic poisoning, mainly influences the sclerous tissues of human body, comprises tooth, bone, and some other soft tissue is also had damage, and clinical manifestation is apparent that dental fluorosis and skeletal fluorosis most.Fluorine is not only that influence is attractive in appearance for the damage of tooth, and can have influence on and chew and digestive function.Skeletal fluorosis comprises bone bending, major part, big joint disease.Fluorine makes that also calcium excessively deposits after getting in the body on blood vessel, cause angiosteosis, causes arteriosclerosis.Diarrhoea, dehydration and cramps of gastrointestinal tract can appear behind the excessive absorption vitriol.
Fluorosis is not only brought misery to the patient, and has influence on local economic development.Therefore handle the tap water of fluorine content and vitriol, supplying with the healthy and safe tap water of local people is the task of top priority.
The general tap water of handling high fluorine content and vitriol adopts reverse osmosis method, and other also have electrodialysis, chemical precipitation method, flocculent precipitation.These method investments are bigger, and equipment maintenance cost is expensive.
Summary of the invention:
The objective of the invention is to overcome the deficiency of prior art, a kind of simple process for purifying high fluorine and high sulfuric acid brine is provided.
The object of the invention is realized according to following proposal:
A kind of process for purifying high fluorine and high sulfuric acid brine, its technological process is followed successively by: coarse filtration, weak acid IX, weak base IX, accent pH value, one-level defluorination molecular sieve filtration, secondary defluorination molecular sieve filtration;
The used resin of said weak acid IX is the macropore weakly acidic cation-exchange resin;
The used resin of said weak base IX is a weakly-basic anion vinylformic acid exchange resin;
Said accent pH value is meant with Hydrocerol A to be adjusted to the pH value of object being treated about 6.
Present device requires simple, and starting material are prone to ask, and long service life is with low cost.Be specially adapted to rural area big area water, water consumption is big more, and cost is low more.
Description of drawings:
Fig. 1 is a process flow diagram of the present invention
Embodiment:
Concrete technology of the present invention can use " 312 " purification pattern to summarize, and so-called " 3 ", promptly first three layer filtration, the first layer coarse filtration is fallen macroscopic suspended substance and contaminant filter in the water; The second layer and the 3rd layer of mode that adopts resin to carry out yin, yang IX respectively reduce the content of vitriol in the water, and make resin regeneration through dosing regenerated mode, recycle, and reduce cost; So-called " 1 " promptly takes 1 pH value to regulate measure before the 4th layer of entering and layer 5 fluorine remover, just selects Hydrocerol A as the solution of regulating pH value, higher pH value is reduced to about 6, to remain on acid range.So-called " 2 ", i.e. the two-layer filtration in back, the 4th layer is filtered with layer 5 and all to adopt a kind of defluorination molecular sieve; Reduce the content of fluorochemical in the water, and make molecular sieve recover active, reuse through dosing regenerated mode; Reduce cost to greatest extent, to reach the standard of Drinking Water.
Process flow sheet as shown in Figure 1, former water pass through weak acid IX and weak base IX respectively, and yin, yang ionic content significantly reduces in the former water.Because the defluorination molecular sieve can be brought into play the efficient of defluorination to greatest extent under acidic conditions, therefore before getting into fluorine remover, select Hydrocerol A as the solution of regulating pH value, the higher pH value of Jiang Yuanshui is reduced to about 6, to remain on acid range.The concentration of cationic exchange regenerator hydrochloric acid, anionresin regenerator sodium hydroxide, accent pH value Hydrocerol A and defluorination regenerator alum is as shown in the table:
| Weak acid regeneration medicine-chest | Weak base regeneration medicine-chest | PH value is regulated | Defluorination regeneration medicine-chest | |
| Concentration of hydrochloric acid (weight %) | 1-6 | |||
| Naoh concentration (weight %) | 1-6 | |||
| Citric acid concentration (weight %) | 1-2 | |||
| Alum concentration (weight %) | 1-5 |
Claims (1)
1. process for purifying high fluorine and high sulfuric acid brine; Its technological process is followed successively by: coarse filtration, weak acid IX, weak base IX, adjust pH, one-level defluorination molecular sieve filtration, secondary defluorination molecular sieve filtration; The used resin of above-mentioned weak acid IX is the macropore weakly acidic cation-exchange resin; The used resin of above-mentioned weak base IX is a weakly-basic anion vinylformic acid exchange resin, and above-mentioned adjust pH is meant with Hydrocerol A adjusts to 6 with the pH value of object being treated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910117529A CN101696064B (en) | 2009-10-26 | 2009-10-26 | Process for purifying high fluorine and high sulfuric acid brine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910117529A CN101696064B (en) | 2009-10-26 | 2009-10-26 | Process for purifying high fluorine and high sulfuric acid brine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101696064A CN101696064A (en) | 2010-04-21 |
| CN101696064B true CN101696064B (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910117529A Expired - Fee Related CN101696064B (en) | 2009-10-26 | 2009-10-26 | Process for purifying high fluorine and high sulfuric acid brine |
Country Status (1)
| Country | Link |
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| CN (1) | CN101696064B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304038B (en) * | 2011-06-11 | 2015-04-01 | 山东兴氟新材料有限公司 | Device and method for lowering concentration of fluorine ions carried in production of trifluoroacetic acid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161608Y (en) * | 1993-07-13 | 1994-04-13 | 龚建 | Combined fluorine-removing device |
| CN101302054A (en) * | 2008-06-20 | 2008-11-12 | 西安三林能源工程有限公司 | Method for removing sulfate ion in oil-contaminated water and apparatus thereof |
| CN101456601A (en) * | 2007-12-11 | 2009-06-17 | 刘国昌 | Drinking water defluorination method |
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2009
- 2009-10-26 CN CN200910117529A patent/CN101696064B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161608Y (en) * | 1993-07-13 | 1994-04-13 | 龚建 | Combined fluorine-removing device |
| CN101456601A (en) * | 2007-12-11 | 2009-06-17 | 刘国昌 | Drinking water defluorination method |
| CN101302054A (en) * | 2008-06-20 | 2008-11-12 | 西安三林能源工程有限公司 | Method for removing sulfate ion in oil-contaminated water and apparatus thereof |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-324137A 2005.11.24 |
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| CN101696064A (en) | 2010-04-21 |
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