CN101912773B - Regenerating method of drinking water defluoridation filtering material - Google Patents
Regenerating method of drinking water defluoridation filtering material Download PDFInfo
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- CN101912773B CN101912773B CN 201010264606 CN201010264606A CN101912773B CN 101912773 B CN101912773 B CN 101912773B CN 201010264606 CN201010264606 CN 201010264606 CN 201010264606 A CN201010264606 A CN 201010264606A CN 101912773 B CN101912773 B CN 101912773B
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- regeneration
- defluoridation
- filtering material
- hydroxyapatite
- saturated
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- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000001914 filtration Methods 0.000 title claims abstract description 14
- 239000003651 drinking water Substances 0.000 title claims abstract description 11
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 11
- 230000001172 regenerating effect Effects 0.000 title abstract description 5
- 230000008929 regeneration Effects 0.000 claims abstract description 92
- 238000011069 regeneration method Methods 0.000 claims abstract description 92
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims abstract description 32
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims abstract description 26
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 14
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 10
- 239000011737 fluorine Substances 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims abstract description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 25
- 239000000706 filtrate Substances 0.000 claims description 16
- 238000006115 defluorination reaction Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000009418 renovation Methods 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 4
- -1 fluorine ions Chemical class 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 231100000572 poisoning Toxicity 0.000 description 3
- 230000000607 poisoning effect Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 208000002064 Dental Plaque Diseases 0.000 description 1
- 206010016818 Fluorosis Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 208000004042 dental fluorosis Diseases 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/048—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing phosphorus, e.g. phosphates, apatites, hydroxyapatites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3433—Regenerating or reactivating of sorbents or filter aids other than those covered by B01J20/3408 - B01J20/3425
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/50—Aspects relating to the use of sorbent or filter aid materials
- B01J2220/56—Use in the form of a bed
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to a regenerating method of a drinking water defluoridation filtering material, which achieves the highest regeneration efficiency and the maximum repeated use times and realizes the high regeneration efficiency of a hydroxylapatite filtering material through the alternation of the thermal regeneration processing and mechanical abrasion of the hydroxylapatite granular filtering material saturated by fluorine ions. After the thermal regeneration processing for many times, mechanical abrasion processing is adopted when the regeneration rate is low, so that the fresh surface of a hydroxylapatite spherule is exposed, the defluoridation capability is recovered, and the defluoridation capability is ensured by adding a new material according to the abrasion quantity instead of entirely updating after the defluoridation performance of the filtering material fails. The regeneration efficiency of defluoridation filtering material is high, and the single regeneration efficiency is larger than 50-80 percent; the defluoridation filtering material is continuously updated in the operating process, and the defluoridation performance is stable for a long time; and the regenerating method is simple and easy to operate and can realize the regeneration of the filtering material only by lightly pressing a switch without the necessity of taking out the filtering material.
Description
Technical field
The present invention relates to a kind of drinking water treatment technology, be particularly useful for the renovation process of the drinking water defluoridation filtering material of granular hydroxyapatite.
Background technology
Drink the fluorine poisoning that high-fluorine water causes and relate to worldwide endemic disease, the lighter causes the fluorine dental plaque, and weight person can cause fluorosis of bone, causes osteoporosis, ostealleosis, even paralysis, disability.China is one of country that fluorine poisoning is the most serious in the world, and except that Shanghai City, the each province that spreads all over the country mainly is distributed in rural area and pastoral area that economy falls behind relatively, and the sick village population of poisoning because of the high-fluorine water source at present is up to 81,410,000." national drinking water of rural area safety engineering Eleventh Five-Year Plan " determines to solve basically in 2015 the safe drinking water problem of people in the countryside more than 300,000,000.
At present, domestic and international general technology of Fluoride Removal mainly adopts absorption method, and can the regeneration problem of adsorbent be to influence sorbing material be used for one of key factor of defluoridation filter material.Hydroxyapatite (HAP) is familiar with by people gradually as drinking water defluoridation filtering material and is accepted; Its traditional renovation process mainly is as regenerative agent with 0.25%～1% NaOH solution; The regeneration back is with hydrochloric acid or sulfuric acid solution neutralization; This method regeneration efficiency is low, and equipment is had corrosiveness, has influenced the promotion and application of hydroxyapatite defluorinating agent.Ying Bo, Li Xinyun, Cong Zhengmao is in " research of the renovation process of fluorine material-hydroxyapatite falls in drinking-water " (health research; 2002,31 (02): 83-84) reported in the literary composition that the NaOH method of reproduction of hydroxyapatite and the regeneration effect of face coat method of reproduction compare, the result shows; With the face coat method of reproduction saturated hydroxyapatite is carried out Regeneration Treatment; Its regeneration efficiency can reach 46%-64%, compares with traditional NaOH method of reproduction, and regeneration efficiency has improved more than 2 times.But the coating method of reproduction need be with being put back into by finite concentration Ca by the saturated HAP of fluorine ion
2+And H
2PO
3 -In the solution of forming, and adjustment pH value of solution value is about 3, reacts again on its surface to generate the new hydroxyapatite of one deck, to recover its defluorination ability.For vast rural area, this operation relative complex, reaction condition is wayward, thereby causes regeneration efficiency to be difficult to guarantee easily.
Because the service life of defluoridation filter material is all shorter, when defluoridation filter material can not be regenerated, needs the integral replacing filtrate, the replacing process bothers very much, is a major reason that causes a lot of fluoride-removing equipments not use for a long time.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of renovation process of drinking water defluoridation filtering material, through the coupling of heat regeneration and mechanical wear, realize hydroxyapatite media regeneration high efficiency, filtrate need not replacing, easy to use, method is simple, quick.
Technical scheme: renovation process of the present invention is following:
A, adopt hot Regeneration Treatment: to being heated in water by the saturated hydroxyapatite particulate filter of fluorine ion, continue a period of time, can reuse to once more saturated by fluorine ion;
B, to being carried out hot Regeneration Treatment once more by the saturated granular hydroxyapatite filtrate of fluorine ion once more;
C, repeating step b carry out thermal regeneration processing for many times, are lower than 20% until the regeneration rate of hydroxyapatite;
D, adopt the mechanical wear Regeneration Treatment: make regeneration rate be lower than 20% by the saturated hydroxyapatite particulate filter of fluorine ion in fluorine removal device; Make the defluoridation filter material motion wear and tear through current; Grind off the skin of hydroxyapatite; Expose unsalted surface, recover the defluorination ability of hydroxyapatite, replenish the new filtrate of corresponding wear extent and can reuse;
E, re-use the method for hot Regeneration Treatment afterwards, repeating step c and d recycle hot Regeneration Treatment repeatedly, and mechanical wear regeneration 1 time can realize the recycling of defluoridation filter material; Be used alternatingly through hot Regeneration Treatment and mechanical wear Regeneration Treatment, reach media regeneration efficient and the maximization that recycles number of times.
The temperature that said filtrate heats in water is 50～100 °, and the duration is 0.5～5 hour; The number of times of the hot Regeneration Treatment of said repeated use is about 5 times.
Beneficial effect: renovation process of the present invention; Through to by the hot Regeneration Treatment of the saturated hydroxyapatite particulate filter of fluorine ion and the alternate treatment of mechanical wear; Reach regeneration efficiency and the maximization of reusing number of times, realize the regenerated efficient rate of hydroxyapatite filtrate.Through after the thermal regeneration processing for many times, regeneration rate adopts mechanical abrasion processing when low, thereby makes the unsalted surface of hydroxyapatite bead expose; The defluorination ability is able to recover; And add virgin material according to wear extent, guarantee the defluorination ability, rather than update all after the filtrate defluorination performance actual effect by the time.Major advantage is:
1, the defluoridation filter material regeneration efficiency is high: the single regeneration efficiency is greater than 50%～80%;
2, defluoridation filter material is brought in constant renewal in running, and the defluorination performance is steady in a long-term.
3, renovation process is simple.
The specific embodiment
Embodiment one,
A, at first adopt hot Regeneration Treatment: the mode of utilizing heating; Provide defluoridation filter material with energy, make obtained energy by the saturated hydroxyapatite of fluorine ion after, the fluorine ion of hydroxyapatite surface is to internal migration; The activity site on surface is available, and the defluorination ability is able to recover; Through putting the container of defluoridation filter material,, behind the lasting 0.5h, can continue to use in water, being heated to 95 ° by the saturated particulate filter of fluorine ion;
According to being: if in container, put into the regeneration defluorination particulate filter of certain mass (m); Inwardly add fluorinated water; The volume of fluorinated water (v) is as the criterion for the defluoridation filter material of will regenerating soaks fully; Container then vibrates; Make the regeneration defluoridation filter material reach the absorption fluorine ion saturated after, adopt the concentration (according to the assay method-ion selective electrode method of GB7484-87 water quality-fluoride) of fluoride ion in the fluoride ion electrode test water, utilize formula
to calculate regeneration defluorination capacity; With the defluorination capacity of regeneration defluorination capacity divided by the preceding defluoridation filter material of regeneration, drawing regeneration rate is 50%;
Q is regeneration defluorination capacity mg/g in the formula, and Co is the concentration mg/L of fluorine ion in the former water, and C is the concentration mg/L of fluorine ion in the water after the saturated absorption of regeneration defluoridation filter material, and V is volume of water sample L, and m is the quality g of defluorination particulate filter.
B, use a period of time after, with being heated to 95 ° by the saturated granular hydroxyapatite filtrate of fluorine ion once more, continue can continue to use behind the 0.5h, the regeneration rate that uses above-mentioned same method can measure this moment is 40%;
After the process of c, repeating step b, heat regeneration 5 times, need carry out the mechanical wear Regeneration Treatment, the regeneration rate that measure this moment drops to 19%;
D, mechanical wear Regeneration Treatment: make defluoridation filter material in fluorine removal device, move through current, cause by the mechanical wear of the saturated granular hydroxyapatite of fluorine ion; Thereby make the unsalted surface of hydroxyapatite bead expose, the defluorination ability is able to recover; Use with same method mensuration regeneration rate this moment of step b and reach 80%; With the particulate filter after the wearing and tearing filter, washing, the evaporation of will filtrate then, weigh, obtain the wear extent of particulate filter, a general wear extent is about 10% of dosage, the new filtrate of additional corresponding wear extent;
E, re-use the method for hot Regeneration Treatment afterwards, repeating step c and d, recycle about 5 times of hot Regeneration Treatment after, mechanical wear regeneration 1 time can realize the recycling of defluoridation filter material; Be used alternatingly through hot Regeneration Treatment and mechanical wear Regeneration Treatment, reach media regeneration efficient and the maximization that recycles number of times.
Embodiment two, basic identical with embodiment one, same section omits, and different piece is following:
A, at first adopt hot Regeneration Treatment: in water, being heated to 50 ° by the saturated particulate filter of fluorine ion, continue can continue to use behind the 5h, the regeneration rate that measure this moment is 55%;
B, use a period of time after, with being heated to 50 ° by the saturated granular hydroxyapatite filtrate of fluorine ion once more, continue can continue to use behind the 5h, the regeneration rate that measure this moment is 45%;
After the process of c, repeating step b, heat regeneration 5 times, need carry out the mechanical wear Regeneration Treatment, the regeneration rate that measure this moment drops to 18%;
D, mechanical wear Regeneration Treatment: measuring at this moment, regeneration rate reaches 80%; Wear extent is about 10% of dosage, replenishes the new filtrate of corresponding wear extent;
E, re-use the method for hot Regeneration Treatment afterwards, repeating step c and d, recycle about 5 times of hot Regeneration Treatment after, mechanical wear regeneration 1 time can realize the recycling of defluoridation filter material.
Embodiment three, basic identical with embodiment one, same section omits, and different piece is following:
A, at first adopt hot Regeneration Treatment: in water, being heated to 70 ° by the saturated particulate filter of fluorine ion, continue can continue to use behind the 3h, the regeneration rate that measure this moment is 65%;
B, use a period of time after, with being heated to 70 ° by the saturated granular hydroxyapatite filtrate of fluorine ion once more, continue 3h, the regeneration rate that measure this moment is 55%;
After the process of c, repeating step c, heat regeneration 5 times, need carry out the mechanical wear Regeneration Treatment, the regeneration rate that measure this moment drops to 19%;
D, mechanical wear Regeneration Treatment: measuring at this moment, regeneration rate reaches 80%; Wear extent is about 10% of dosage, replenishes the new filtrate of corresponding wear extent;
E, re-use the method for hot Regeneration Treatment afterwards, repeating step c and d, recycle about 5 times of hot Regeneration Treatment after, mechanical wear regeneration 1 time can realize the recycling of defluoridation filter material.
Claims (1)
1. the renovation process of a drinking water defluoridation filtering material is characterized in that:
A, adopt hot Regeneration Treatment: to being heated in water by the saturated hydroxyapatite particulate filter of fluorine ion, the temperature of heating is 50～100 ℃, continues 0.5～5 hour, can reuse to once more saturated by fluorine ion;
B, to being carried out hot Regeneration Treatment once more by the saturated granular hydroxyapatite filtrate of fluorine ion once more;
C, repeating step b carry out thermal regeneration processing for many times, are lower than 20% until the regeneration rate of hydroxyapatite;
D, adopt the mechanical wear Regeneration Treatment: make regeneration rate be lower than 20% by the saturated hydroxyapatite particulate filter of fluorine ion in fluorine removal device; Make the defluoridation filter material motion wear and tear through current; Grind off the skin of hydroxyapatite; Expose unsalted surface, recover the defluorination ability of hydroxyapatite, replenish the new filtrate of corresponding wear extent and can reuse;
E, re-use the method for hot Regeneration Treatment afterwards, repeating step c and d recycle hot Regeneration Treatment repeatedly, and mechanical wear regeneration 1 time can realize the recycling of defluoridation filter material; Be used alternatingly through hot Regeneration Treatment and mechanical wear Regeneration Treatment, reach media regeneration efficient and the maximization that recycles number of times.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010264606 CN101912773B (en) | 2010-08-27 | 2010-08-27 | Regenerating method of drinking water defluoridation filtering material |
| PCT/CN2011/070799 WO2012024911A1 (en) | 2010-08-27 | 2011-01-30 | Method for regenerating filter material used in removing fluorine from drinking water |
| ZA2012/04090A ZA201204090B (en) | 2010-08-27 | 2012-06-05 | Method for regenerating filter material used in removing fluorine from drinking water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010264606 CN101912773B (en) | 2010-08-27 | 2010-08-27 | Regenerating method of drinking water defluoridation filtering material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101912773A CN101912773A (en) | 2010-12-15 |
| CN101912773B true CN101912773B (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010264606 Expired - Fee Related CN101912773B (en) | 2010-08-27 | 2010-08-27 | Regenerating method of drinking water defluoridation filtering material |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101912773B (en) |
| WO (1) | WO2012024911A1 (en) |
| ZA (1) | ZA201204090B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912773B (en) * | 2010-08-27 | 2012-06-13 | 江苏永冠给排水设备有限公司 | Regenerating method of drinking water defluoridation filtering material |
| CN102728333B (en) * | 2012-07-09 | 2014-08-13 | 河海大学 | Device for regenerating spherical hydroxyapatite for defluorination |
| CN107324459B (en) * | 2017-07-31 | 2019-10-01 | 武汉理工大学 | A kind of production method that fish-bone charcoal removes fluoride electrode |
| CN109179553B (en) * | 2018-09-25 | 2021-12-24 | 中煤科工集团杭州研究院有限公司 | Fluorine-containing wastewater defluorination treatment and filter material regeneration device and method |
| CN109395707A (en) * | 2018-11-07 | 2019-03-01 | 江苏永冠给排水设备有限公司 | A kind of regeneration method of hydroxyapatite defluoridation filter material |
| CN111471850B (en) * | 2020-05-20 | 2021-10-29 | 赣州有色冶金研究所有限公司 | Fluorine fixing method for fluorine-containing tungsten slag washing process |
| CN112958035B (en) * | 2021-03-31 | 2023-06-16 | 煤炭科学技术研究院有限公司 | Defluorination filter material and preparation method thereof |
| CN114735782A (en) * | 2022-05-06 | 2022-07-12 | 李宗洋 | Civil underground water defluorination device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042078U (en) * | 1988-12-16 | 1989-08-02 | 北京市永定门外粮库 | Defluorination apparatus for natural geothermal mineral water |
| CN1415537A (en) * | 2002-11-19 | 2003-05-07 | 武汉化工学院 | Adulterated hydroxyapatite and its production method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586553B2 (en) * | 1977-04-06 | 1983-02-04 | 安宅建設工業株式会社 | Method for removing fluorine ions in water |
| CN1012726B (en) * | 1988-07-22 | 1991-06-05 | 北京工业大学 | Synthetic process of calcium hydroxy phosphate and its usage |
| JP2003170003A (en) * | 2001-11-30 | 2003-06-17 | Jae Jong Kim | Method for treating fluorine-containing fluid and device for treating fluorine-containing fluid |
| CN1616145A (en) * | 2003-11-11 | 2005-05-18 | 李书伟 | Process for preparing high efficiency modified fluorine reducd water purifying filter material |
| JP4614795B2 (en) * | 2005-03-07 | 2011-01-19 | Ｈｏｙａ株式会社 | Metal ion removal method, adsorbent regeneration method, and adsorber regeneration method |
| JP4617175B2 (en) * | 2005-03-07 | 2011-01-19 | Ｈｏｙａ株式会社 | Adsorbent and adsorption device |
| CN101773817A (en) * | 2009-01-13 | 2010-07-14 | 厦门绿邦膜技术有限公司 | Composite absorption material for wastewater treatment and preparation method thereof |
| CN101912773B (en) * | 2010-08-27 | 2012-06-13 | 江苏永冠给排水设备有限公司 | Regenerating method of drinking water defluoridation filtering material |
-
2010
- 2010-08-27 CN CN 201010264606 patent/CN101912773B/en not_active Expired - Fee Related
-
2011
- 2011-01-30 WO PCT/CN2011/070799 patent/WO2012024911A1/en active Application Filing
-
2012
- 2012-06-05 ZA ZA2012/04090A patent/ZA201204090B/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042078U (en) * | 1988-12-16 | 1989-08-02 | 北京市永定门外粮库 | Defluorination apparatus for natural geothermal mineral water |
| CN1415537A (en) * | 2002-11-19 | 2003-05-07 | 武汉化工学院 | Adulterated hydroxyapatite and its production method |
Non-Patent Citations (4)
| Title |
|---|
| JP昭53-125357A 1978.11.01 |
| JP特开2003-170003A 2003.06.17 |
| Shigeru Sugiyama et al..Preparation of a hydroxyapatite film and its application in the removal and regeneration of aqueous cations.《Journal of Colloid and Interface Science》.2009,第332卷439-443. * |
| 应波 等.饮水降氟材料-羟基磷灰石再生方法的研究.《卫生研究》.2004,第31卷(第2期),83-84. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101912773A (en) | 2010-12-15 |
| WO2012024911A1 (en) | 2012-03-01 |
| ZA201204090B (en) | 2013-02-27 |
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