CN107162279A - A kind of cleaning system and purification method for handling high-concentration fluorine-contained waste liquid - Google Patents
A kind of cleaning system and purification method for handling high-concentration fluorine-contained waste liquid Download PDFInfo
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- CN107162279A CN107162279A CN201710577893.XA CN201710577893A CN107162279A CN 107162279 A CN107162279 A CN 107162279A CN 201710577893 A CN201710577893 A CN 201710577893A CN 107162279 A CN107162279 A CN 107162279A
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- concentration fluorine
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- 239000007788 liquid Substances 0.000 title claims abstract description 54
- 239000002699 waste material Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004140 cleaning Methods 0.000 title claims abstract description 17
- 238000000746 purification Methods 0.000 title claims abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 35
- 238000002425 crystallisation Methods 0.000 claims abstract description 26
- 230000008025 crystallization Effects 0.000 claims abstract description 25
- 238000001556 precipitation Methods 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 12
- 239000010802 sludge Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000013078 crystal Substances 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims description 37
- 239000001110 calcium chloride Substances 0.000 claims description 30
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 30
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 28
- 239000011575 calcium Substances 0.000 claims description 22
- 229910052791 calcium Inorganic materials 0.000 claims description 22
- 239000002351 wastewater Substances 0.000 claims description 22
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 21
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 17
- 239000006228 supernatant Substances 0.000 claims description 17
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 13
- 229910052731 fluorine Inorganic materials 0.000 claims description 13
- 239000011737 fluorine Substances 0.000 claims description 13
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 9
- 230000029219 regulation of pH Effects 0.000 claims description 7
- 238000009388 chemical precipitation Methods 0.000 claims description 6
- 239000010808 liquid waste Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- 239000012047 saturated solution Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000005660 chlorination reaction Methods 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000005189 flocculation Methods 0.000 abstract description 2
- 230000016615 flocculation Effects 0.000 abstract description 2
- 230000006698 induction Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000009297 electrocoagulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- -1 aluminium metallurgy Substances 0.000 description 1
- 238000009866 aluminium metallurgy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 229940077441 fluorapatite Drugs 0.000 description 1
- 229910052587 fluorapatite Inorganic materials 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[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 VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000004065 wastewater treatment 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/22—Fluorides
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of cleaning system and purification method for handling high-concentration fluorine-contained waste liquid, the present invention becomes one the processes such as traditional stirring reaction, precipitation flocculation, separation of solid and liquid, induction crystallization, has the advantages that floor space is small, reaction is fast, clearance is high, be not likely to produce secondary pollution.Fluid bed crystallization reaction process is rapid and does not produce sludge, can both reduce the total Funing tablet of water outlet, the crystal for obtaining high-purity can be effectively reclaimed again, be a kind of environmentally friendly technology.
Description
Technical field
The present invention relates to Industrial Wastewater Treatment and field of resource recovery technique, more particularly to a kind of processing high concentration
The cleaning system and purification method of fluorine-containing waste liquid.
Background technology
Fluorine is a kind of property extremely active nonmetalloid, can not be existed in nature with free simple substance.Simple substance fluoride
It is flaxen gas in normal conditions, with pungent odour, at normal temperatures, fluorine almost can be with all element compounds.
Fluorine is main in nature exists in the form of fluorite, ice crystal and fluorapatite.They are all important chemical industry
Raw material, is widely used in the industrial productions such as fluorination hydrazine, fluorinated refrigerant, aluminium metallurgy, phosphate fertilizer, steel.
In recent years, China's modernization industry achieves development at full speed, the synthesis of fluoride, metal smelt, electronics, agricultural chemicals
Increasingly increased etc. the industry output value, the construction of a large amount of fluorine industrial bases is gone into operation, resulting waste water containing fluorine is also sharply increased, I
State's fluoride pollution problem is also increasingly serious.Fluoro-containing concentration is such as fluorinated in factory's waste discharge in more than 1000mg/L, chemical fertilizer factory produces
Fluoride waste concentration in 1500mg/L or so, the fluoride waste concentration produced in manufacture glass process is in 200~2000mg/
Between L.
Being used to handle the method for fluoride waste both at home and abroad at present has a variety of, mainly chemical precipitation method, coagulation sedimentation, suction
Attached method, hyperfiltration, electrocoagulation, ion-exchange-resin process etc..Using it is more be chemical precipitation method, coagulation sedimentation and
Absorption method, other method is using less.Traditional precipitation coagulating treatment technology, settleability is poor, and sludge moisture content is high, separation of solid and liquid
Difficulty, sludge is difficult to recycle.The scope of application such as hyperfiltration and absorption method is small, and processing Funing tablet is relatively low, and treating capacity is smaller,
Processing cost is high.Electrocoagulation will consume a large amount of electric energy, and processing cost is higher.
The content of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide handle high-concentration fluorine-contained waste liquid
Cleaning system and purification method, the cleaning system reasonable in design so that the purification method can ensure water outlet fluorine from
Son is up to standard, and water outlet chloride ion content drops to below 10ppm, while ensureing that calcirm-fluoride bed mud is recycled, can be used as after dehydration
Finishing material, produces hydrofluoric acid for chemical industry, can significantly reduce medicament usage amount, reduce cost, can effectively handle
High-concentration waste water.
To realize that the technical scheme that the purpose of the present invention is used is：
A kind of cleaning system of the high-concentration fluorine-contained waste liquid of processing of the present invention, including the crystallization of precipitation tank in term, fluid bed are anti-
Answer device and calcium liquid storage tank；
Wherein described precipitation tank in term bottom is provided with sludge outlet, the supernatant output end on the precipitation tank in term top
Mouth is connected by pipeline with the input port of low concentration fluoride waste storage tank, and the output port of low concentration fluoride waste storage tank leads to
The input port that wastewater supernatant fluid pipeline is crossed with fluid bed crystallization reactor is connected, and the wastewater supernatant fluid pipeline is provided with useless
Liquid pump；
The output port of the calcium liquid storage tank is connected by calcium liquid pipe road with the input port with fluid bed crystallization reactor
Logical, calcium liquid pipe road is provided with calcium liquid pump；
The bottom of the fluid bed crystallization reactor is provided with calcium fluoride crystal outlet, and top is provided with after-treatment water outlet
Mouthful.
It is preferred that, the side wall of the fluid bed crystallization reactor, which is provided with self-loopa pipeline, the self-loopa pipeline, to be set
There is reflux pump.
It is preferred that, the carrier in the fluid bed crystallization reactor is the nonmagnetic silica sands of 0.1-0.3mm.
It is preferred that, the cleaning system also includes PH regulating reservoirs, PH regulations storage tank, high-concentration fluorine-contained liquid waste tank and solid
Calcium chloride storage tank, the PH regulations storage tank, the output port of high-concentration fluorine-contained liquid waste tank pass through pipeline and PH regulating reservoirs respectively
Input port be connected, the output port of the PH regulating reservoirs and solid calcium chloride storage tank passes through pipeline and precipitation reaction respectively
The input port of groove is connected.
It is preferred that, the calcium liquid storage tank is calcium chloride saturation liquid storage tank, and it is heavy that the cleaning system also includes calcium chloride stirring
Pond is dropped, and the supernatant output port of the calcium chloride stirring settling tank is connected by pipeline with the calcium chloride saturation liquid storage tank
It is logical.
Another aspect of the present invention, in addition to a kind of purification method for handling high-concentration fluorine-contained waste liquid, comprise the following steps：
(1) fluorine ion in high-concentration fluorine-containing waste water is removed using chemical precipitation method, obtains wastewater supernatant fluid；
(2) wastewater supernatant fluid and calcium liquid obtained step (1), which is passed into fluid bed crystallization reactor, to be crystallized, row
Go out calcium fluoride crystal, the secondary effluent backflow of fluidized-bed reactor top outflow uses or detected rear discharge up to standard.
It is preferred that, the calcium liquid in the step (2) is calcium chloride saturated solution.
It is preferred that, the preparation of the calcium chloride saturated solution is stirred by the way that excess chlorination calcium is passed through into the calcium chloride equipped with water
Mix stirring precipitation in sedimentation basin and prepare.
It is preferred that, the chemical precipitation method in the step (1) comprises the following steps：
A, using PH the pH value of liquid regulation high-concentration fluorine-containing waste water is adjusted to 5-9；
Calcic precipitating reagent is passed through in B, the waste water into step A, calcium fluoride sludge is removed.
It is preferred that, the calcic precipitating reagent in the step B is calcium chloride solid.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, present invention process flow is simple, and core apparatus fluid bed crystallization reactor manufacturing cost is cheap, can handle big portion
Division of labor industry fluoride waste, it is adaptable to industrialize large-scale application, discontinuously handle the advanced complete row of water process in sewage, i.e. processing procedure
After water, it is further continued for into water.
2nd, this technology energy efficient process fluoride waste, can significantly reduce adding of agent while processing waste water on a large scale
Amount, reduces occupation area of equipment, reduces input cost, and the calcium fluoride sludge of output is easily recycled, and prospects for commercial application is wide
It is wealthy.
3rd, the processes such as traditional stirring reaction, precipitation flocculation, separation of solid and liquid, induction crystallization are integrated into by fluid bed crystallisation
One, has the advantages that floor space is small, reaction is fast, clearance is high, be not likely to produce secondary pollution.Fluid bed crystallization reaction process
It is rapid and do not produce sludge, the total Funing tablet of water outlet can have both been reduced, the crystal for obtaining high-purity can be effectively reclaimed again, has been a kind of
Environmentally friendly technology.
Brief description of the drawings
Fig. 1 show the purification process chart of the embodiment of the present invention.
Fig. 2 show the process equipment annexation figure of the embodiment of the present invention.
In figure：The high-concentration fluorine-contained liquid waste tanks of 1-, 2-PH regulation liquid storage tanks, 3-PH regulating reservoirs, 4- precipitation tank in term, 5- is solid
Body calcium chloride storage tank, 6- low concentration fluoride waste storage tanks, 7- waste drains pumps, 8- reflux pumps, 9- fluid bed crystallization reactors, 10- calcium
Liquid pump, 11- calcium chloride saturation liquid storage tanks, 12- calcium chloride stirring settling tank.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing 1-2 and specific embodiment.It should be appreciated that this place is retouched
The specific embodiment stated only to explain the present invention, is not intended to limit the present invention.
Embodiment
A kind of cleaning system of the high-concentration fluorine-contained waste liquid of processing of the present invention, including PH regulating reservoirs 3, high-concentration fluorine-contained waste liquid
Storage tank 1, the output port of PH regulation storage tanks 2 are connected by pipeline with the input port of PH regulating reservoirs 3, are stored in high concentration and are contained
Waste water in fluorine liquid waste tank 1 injects PH regulating reservoirs 3 through pipeline through the PH buffer solutions counted and be stored in PH regulation storage tanks 2 and adjusted
PH is 5-9；
The output port of PH regulating reservoirs 3 is connected by pipeline with the input port of precipitation tank in term 4；Adjust waste water after PH
Precipitation tank in term 4 is injected through pipeline, the output port of solid calcium chloride storage tank 5 connects the input of precipitation tank in term 4 by pipeline
Port, the bottom of precipitation tank in term 4 is provided with sludge outlet, and top is provided with supernatant outlet, the supernatant of precipitation tank in term 4
Outlet is connected by pipeline with the input port of low concentration fluoride waste storage tank 6, the solid chlorine of the top of precipitation tank in term 4
Calcium storage tank 5 adds calcium chloride into precipitation tank in term 4, stands 1h after being sufficiently stirred for, and the calcium fluoride sludge of generation is from reactive tank bottom
Portion, which is extracted out, to be recycled, and wastewater supernatant fluid injects low concentration fluoride waste storage tank 6 through pipeline, and wastewater supernatant fluid injects fluorine through pipeline
Ion concentration is less than 2000ppm, and the output port of low concentration fluoride waste storage tank 6 passes through wastewater supernatant fluid pipeline and fluid bed knot
The input port of brilliant reactor 9, the wastewater supernatant fluid pipeline is provided with waste drains pump 7, and wastewater supernatant fluid is pumped into stream by waste drains pump 7
Change in bed crystallization reactor 9；
The supernatant output port of calcium chloride stirring settling tank 12 is connected with calcium chloride saturation liquid storage tank 11, and calcium chloride is satisfied
It is connected with the output port of liquid storage tank 11 by pipeline with the input port of fluid bed crystallization reactor 9, and on this pipeline
Provided with calcium liquid pump 10, the calcium chloride saturated solution in calcium chloride saturation liquid storage tank 11 is pumped into fluid bed crystallization reactor by calcium liquid pump 10
9；
Self-loopa pipeline is additionally provided with fluid bed crystallization reactor 9, the self-loopa pipeline is provided with reflux pump 8, fluidisation
Partial reaction liquid in bed crystallization reactor 9 is recycled through reflux pump 8, and the bottom of the fluid bed crystallization reactor 9 is provided with
Calcium fluoride crystal outlet, top is provided with after-treatment delivery port, and after-treatment water outlet is arranged at the top of fluid bed crystallization reactor
Go out, detect rear discharge up to standard.
Described above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. the cleaning system of the high-concentration fluorine-contained waste liquid of processing, it is characterised in that：Including precipitation tank in term, fluid bed crystallization reactor
With calcium liquid storage tank, wherein：
The precipitation tank in term bottom is provided with sludge outlet, and the supernatant output port on the precipitation tank in term top passes through pipe
Road is connected with the input port of low concentration fluoride waste storage tank, and the output port of low concentration fluoride waste storage tank passes through on waste water
Clear liquid pipeline is connected with the input port of fluid bed crystallization reactor, and the wastewater supernatant fluid pipeline is provided with waste drains pump；
The output port of the calcium liquid storage tank is connected by calcium liquid pipe road with the input port with fluid bed crystallization reactor, calcium
Liquid pipe road is provided with calcium liquid pump；
The bottom of the fluid bed crystallization reactor is provided with calcium fluoride crystal outlet, and top is provided with after-treatment delivery port.
2. the cleaning system of the high-concentration fluorine-contained waste liquid of processing according to claim 1, it is characterised in that：The fluid bed knot
The side wall of brilliant reactor is provided with self-loopa pipeline, and the self-loopa pipeline is provided with reflux pump.
3. the cleaning system of the high-concentration fluorine-contained waste liquid of processing according to claim 1, it is characterised in that：The fluid bed knot
Carrier in brilliant reactor is the nonmagnetic silica sands of 0.1-0.3mm.
4. the cleaning system of the high-concentration fluorine-contained waste liquid of processing according to claim 1, it is characterised in that：The cleaning system
Also including PH regulating reservoirs, PH regulations storage tank, high-concentration fluorine-contained liquid waste tank and solid calcium chloride storage tank, the PH regulations storage tank,
The output port of high-concentration fluorine-contained liquid waste tank is connected by pipeline with the input port of PH regulating reservoirs respectively, the PH regulations
The output port of pond and solid calcium chloride storage tank is connected by pipeline with the input port of precipitation tank in term respectively.
5. the cleaning system of the high-concentration fluorine-contained waste liquid of processing according to claim 1, it is characterised in that：The calcium liquid storage tank
For calcium chloride saturation liquid storage tank, the cleaning system also includes calcium chloride and stirs settling tank, the calcium chloride stirring settling tank
Supernatant output port is connected by pipeline with the calcium chloride saturation liquid storage tank.
6. a kind of purification method for handling high-concentration fluorine-contained waste liquid, it is characterised in that：Comprise the following steps：
(1) fluorine ion in high-concentration fluorine-containing waste water is removed using chemical precipitation method, obtains low concentration fluoride waste；
(2) the low concentration fluoride waste and calcium liquid obtained step (1), which is passed into fluid bed crystallization reactor, to be crystallized, row
Go out calcium fluoride crystal, the secondary effluent backflow of fluidized-bed reactor top outflow uses or detected rear discharge up to standard.
7. the purification method of the high-concentration fluorine-contained waste liquid of processing according to claim 6, it is characterised in that：The step (2)
In calcium liquid be calcium chloride saturated solution.
8. the purification method of the high-concentration fluorine-contained waste liquid of processing according to claim 7, it is characterised in that：The calcium chloride is satisfied
Preparation with solution is to stir stirring precipitation in sedimentation basin and preparation by the way that excess chlorination calcium to be passed through to the calcium chloride equipped with water.
9. the purification method of the high-concentration fluorine-contained waste liquid of processing according to claim 6, it is characterised in that：The step (1)
In chemical precipitation method comprise the following steps：
A, using PH the pH value of liquid regulation high-concentration fluorine-containing waste water is adjusted to 5-9；
Calcic precipitating reagent is passed through in B, the waste water into step A, calcium fluoride sludge is removed.
10. the purification method of the high-concentration fluorine-contained waste liquid of processing according to claim 9, it is characterised in that：In the step B
Calcic precipitating reagent be calcium chloride solid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710577893.XA CN107162279A (en) | 2017-07-15 | 2017-07-15 | A kind of cleaning system and purification method for handling high-concentration fluorine-contained waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710577893.XA CN107162279A (en) | 2017-07-15 | 2017-07-15 | A kind of cleaning system and purification method for handling high-concentration fluorine-contained waste liquid |
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| CN107162279A true CN107162279A (en) | 2017-09-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110817924A (en) * | 2019-10-09 | 2020-02-21 | 江西理工大学 | Method for treating fluorine-containing waste gas |
| CN113428886A (en) * | 2021-07-21 | 2021-09-24 | 西安吉利电子化工有限公司 | Method for producing high-purity calcium fluoride and concentrating waste hydrochloric acid by using waste acid |
| CN114229975A (en) * | 2021-11-29 | 2022-03-25 | 温州大学 | Method for recycling fluorine-containing wastewater based on calcium fluoride induced precipitation |
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- 2017-07-15 CN CN201710577893.XA patent/CN107162279A/en active Pending
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| WO2005070831A1 (en) * | 2004-01-21 | 2005-08-04 | Morita Chemical Industries Co., Ltd. | Method for producing calcium fluoride, reusing method and recycling method thereof |
| JP2008073589A (en) * | 2006-09-20 | 2008-04-03 | Japan Organo Co Ltd | Fluorine crystallization technology |
| CN203212397U (en) * | 2013-02-06 | 2013-09-25 | 北京国环清华环境工程设计研究院有限公司 | System for treating fluoride-containing waste water in solar cell production |
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| CN207108677U (en) * | 2017-07-15 | 2018-03-16 | 核工业理化工程研究院 | A kind of cleaning system for handling high-concentration fluorine-contained waste liquid |
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| CN110817924A (en) * | 2019-10-09 | 2020-02-21 | 江西理工大学 | Method for treating fluorine-containing waste gas |
| CN113428886A (en) * | 2021-07-21 | 2021-09-24 | 西安吉利电子化工有限公司 | Method for producing high-purity calcium fluoride and concentrating waste hydrochloric acid by using waste acid |
| CN114229975A (en) * | 2021-11-29 | 2022-03-25 | 温州大学 | Method for recycling fluorine-containing wastewater based on calcium fluoride induced precipitation |
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