CN219823953U - Fluoride ion removing device for fluoride-containing wastewater - Google Patents
Fluoride ion removing device for fluoride-containing wastewater Download PDFInfo
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- CN219823953U CN219823953U CN202321356949.6U CN202321356949U CN219823953U CN 219823953 U CN219823953 U CN 219823953U CN 202321356949 U CN202321356949 U CN 202321356949U CN 219823953 U CN219823953 U CN 219823953U
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- fluorine
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- fluoride
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- 239000002351 wastewater Substances 0.000 title claims abstract description 58
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 33
- 239000011737 fluorine Substances 0.000 claims abstract description 33
- 238000004062 sedimentation Methods 0.000 claims abstract description 32
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 30
- 239000012528 membrane Substances 0.000 claims abstract description 29
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 23
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000001110 calcium chloride Substances 0.000 claims abstract description 10
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 10
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 9
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 238000000746 purification Methods 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000012141 concentrate Substances 0.000 claims abstract description 3
- 230000008878 coupling Effects 0.000 claims abstract description 3
- 238000010168 coupling process Methods 0.000 claims abstract description 3
- 238000005859 coupling reaction Methods 0.000 claims abstract description 3
- -1 fluoride ions Chemical class 0.000 abstract description 21
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 19
- 239000006228 supernatant Substances 0.000 description 9
- 238000001556 precipitation Methods 0.000 description 7
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009388 chemical precipitation Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000011863 silicon-based powder Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 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
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a fluoride ion removing device for fluorine-containing wastewater, which relates to the technical field of wastewater treatment and mainly aims to effectively control the concentration of fluoride ions to enter a reverse osmosis membrane within a reasonable range, improve the service life of the reverse osmosis membrane, reduce the entry of chloride ions into a production system along with reclaimed water and reduce wastewater discharge. The main technical scheme of the utility model is as follows: a fluoride ion removal device for wastewater containing fluorine, the device comprising: the water collecting tank, the sedimentation tank, the water storage tank, the concentration mechanism and the concentration tank are sequentially and circularly connected; wherein, the catch basin is connected in calcium hydrate pipeline, calcium chloride pipeline and fluorine-containing waste pipe respectively, enrichment facility internally mounted has reverse osmosis membrane, enrichment facility pass through waste pipe connect in concentrate jar for output filters the waste water after the separation, enrichment facility passes through water purification union coupling in circulating water pond for output filters the water purification after the separation.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a fluoride ion removing device for fluoride-containing wastewater.
Background
The treatment method of fluorine-containing wastewater is classified into various methods, and the commonly used methods are roughly classified into an activated alumina method, an electrodialysis method and a flocculation precipitation method. At present, a calcium salt precipitation method is generally adopted for high-concentration fluorine-containing industrial wastewater, namely lime milk is added into the wastewater, so that fluoride ions and calcium ions generate CaF2 for precipitation and removal. Under the general condition, the solubility of the calcium fluoride is 8.57mg/L, and the water discharged after the treatment by the method is difficult to reach the standard, and the sludge is slow to settle and difficult to dehydrate. For high-concentration fluorine-containing wastewater, two steps of treatment are needed to ensure the quality of the wastewater, the RO reverse osmosis membrane is used for enabling liquid to pass through the reverse osmosis membrane under high-pressure driving, and small molecules dissolved in the water pass through the reverse osmosis membrane so as to separate and purify the wastewater. The qualified water is recycled, and the produced concentrated water is precipitated by lime reaction, so that the fluorine content is reduced to below 10 mg/L.
Because the fluoride ion concentration fluctuation of the current received fluoride-containing wastewater is large and brings a lot of silica fume, the requirement index of the reverse osmosis membrane is often exceeded, the service life of the reverse osmosis membrane is greatly reduced, meanwhile, the recovery water fluoride ion exceeds the standard, the recovery cannot be carried out, the waste of water is caused, the technical protocol of the original reverse osmosis membrane requires the service life of 3 years, and the operation effect is in a failure state only after 1 year and 4 months. Although the precipitation method has simple process and convenient operation, the dosage of the medicament is larger, secondary pollution is brought, the treatment effect is not ideal, the fluoride content of the effluent is 15-30 mg/L, the effluent is difficult to reach the emission standard, and the precipitation method has the defects of slow sediment settlement, long period for treating large-flow effluent, unsuitability for continuous emission and the like, and simultaneously increases emission.
Disclosure of Invention
In view of the above, the utility model provides a fluoride ion removing device for fluorine-containing wastewater, which is mainly used for effectively controlling the concentration of fluoride ions to enter a reverse osmosis membrane within a reasonable range, prolonging the service life of the reverse osmosis membrane, reducing the entry of chloride ions into a production system along with reclaimed water and reducing wastewater discharge.
In order to achieve the above purpose, the present utility model mainly provides the following technical solutions:
the utility model provides a fluoride ion removing device for fluoride wastewater, which comprises: the water collecting tank, the sedimentation tank, the water storage tank, the concentration mechanism and the concentration tank are sequentially and circularly connected;
wherein, the catch basin is connected in calcium hydrate pipeline, calcium chloride pipeline and fluorine-containing waste pipe respectively, enrichment facility internally mounted has reverse osmosis membrane, enrichment facility pass through waste pipe connect in concentrate jar for output filters the waste water after the separation, enrichment facility passes through water purification union coupling in circulating water pond for output filters the water purification after the separation.
The aim and the technical problems of the utility model can be further realized by adopting the following technical measures.
Optionally, the concentration mechanism includes one-level concentration mechanism and second grade concentration mechanism, the concentration jar includes one-level concentration jar and second grade concentration jar, one-level concentration mechanism the one-level concentration jar second grade concentration mechanism with the second grade concentration jar connects gradually.
Optionally, the sedimentation tank comprises a primary sedimentation tank and a secondary sedimentation tank, and the water collecting tank, the primary sedimentation tank, the secondary sedimentation tank and the water storage tank are sequentially connected.
Optionally, the device further comprises an intermediate water tank, and the secondary sedimentation tank, the intermediate water tank and the water storage tank are sequentially connected.
Optionally, the device further comprises a multi-medium filter, and the water storage tank, the multi-medium filter and the concentration mechanism are sequentially connected.
Optionally, the device further comprises a pH detector and a first fluoride ion detector, wherein the pH detector and the first fluoride ion detector are respectively arranged on the side wall of the water collecting tank.
Optionally, the device further comprises a second fluoride ion detector, wherein the second fluoride ion detector is arranged on an outlet pipeline of the water storage tank.
By means of the technical scheme, the utility model has at least the following advantages:
the fluorine-containing wastewater enters a water collecting tank through a fluorine-containing wastewater pipe, a certain amount of calcium hydroxide is added to adjust the pH value of the wastewater to be neutral, a certain amount of fluorine ions are precipitated, and a certain amount of calcium chloride is added to further precipitate the fluorine ions.
The supernatant is precipitated and separated in the sedimentation tank from the treated wastewater, the supernatant enters the water storage tank, the supernatant in the water storage tank enters the concentration mechanism, the concentration of fluoride ions in the supernatant can be effectively controlled in a lower range, the exceeding of the fluoride ions is avoided, the fluoride ions enter the reverse osmosis membrane again, the service life of the reverse osmosis membrane is prolonged, meanwhile, the consumption of calcium chloride is reduced along with the addition of calcium hydroxide, the probability that chloride ions enter the production system along with the recycled water is reduced, and zero emission of the recycled wastewater is realized.
Drawings
FIG. 1 is a flow chart of a fluoride ion removal device for wastewater containing fluoride, provided by an embodiment of the utility model;
fig. 2 is a schematic structural diagram of a first-stage concentrating mechanism according to an embodiment of the present utility model.
Reference numerals in the drawings of the specification include: the device comprises a water collecting tank 1, a water storage tank 2, a circulating water tank 3, a plate-and-frame filter press 4, a primary concentration mechanism 5, a secondary concentration mechanism 6, a primary concentration tank 7, a secondary concentration tank 8, a primary waste water pipe 9, a secondary waste water pipe 10, a primary water purifying pipe 11, a secondary water purifying pipe 12, a reverse osmosis membrane filter 13, a primary sedimentation tank 14, a secondary sedimentation tank 15, a polyaluminum chloride feeding pipe 16, a polyacrylamide feeding pipe 17, an intermediate water tank 18 and a multi-medium filter 19.
Detailed Description
In order to further describe the technical means and effects adopted for achieving the preset aim of the utility model, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the application of the utility model with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
The utility model is described in further detail below with reference to the drawings and examples.
As shown in fig. 1 and 2, an apparatus for removing fluoride ions from wastewater containing fluoride according to an embodiment of the present utility model includes: the water collecting tank 1, the sedimentation tank, the water storage tank 2, the concentration mechanism and the concentration tank are sequentially and circularly connected;
the water collecting tank 1 is respectively connected to a calcium hydroxide pipe, a calcium chloride pipe and a fluorine-containing waste water pipe, a reverse osmosis membrane is arranged in the concentrating mechanism, the concentrating mechanism is connected to the concentrating tank through the waste water pipe and is used for outputting waste water after filtration and separation, and the concentrating mechanism is connected to the circulating water tank 3 through a water purifying pipe and is used for outputting purified water after filtration and separation.
The fluoride ion removing device for the fluoride-containing wastewater has the following working processes:
the fluorine-containing wastewater enters a water collecting tank 1 through a fluorine-containing wastewater pipe, a certain amount of calcium hydroxide is added to adjust the pH value of the wastewater to be neutral, a certain amount of fluorine ions are precipitated, and a certain amount of calcium chloride is added to further precipitate the fluorine ions.
The wastewater after the treatment is precipitated and separated into supernatant in the sedimentation tank, the supernatant enters the water storage tank 2, the supernatant in the water storage tank 2 enters the concentration mechanism, the concentration of fluorine ions in the supernatant can be effectively controlled in a lower range, the fluorine ions are prevented from exceeding the standard, the reverse osmosis membrane is further entered, the service life of the reverse osmosis membrane is prolonged, the probability that chlorine ions enter the production system along with the reclaimed water is reduced, the reclaimed wastewater is reduced and discharged simultaneously, the discharged wastewater is reduced by 40 to 50 sides every day, and meanwhile, the service life of the reverse osmosis membrane is further prolonged after a small amount of micro silicon powder existing in the fluorine-containing wastewater is settled in the sedimentation tank, so that the service life of the reverse osmosis membrane can be guaranteed to reach 3 years, and even longer.
Specifically, in the fluorine-containing wastewater treatment process, firstly cutting fluorine-containing wastewater into a water collecting tank 1, sampling and analyzing the fluorine ion content in the wastewater before adding calcium hydroxide and calcium chloride to 90% of the volume of the water collecting tank 1, measuring the concentration to be 65mg/L, adding 15kg of calcium hydroxide (30 kg at maximum) into the tank, fully stirring, regulating the pH value of the wastewater to be neutral, sampling and analyzing the concentration to be 32mg/L, adding 45kg of calcium chloride into the tank, connecting a laboratory for sampling and analyzing, reducing the fluorine ion concentration to be 6.7mg/L, entering the reverse osmosis membrane within the performance requirement index of the reverse osmosis membrane, finally, entering the concentrated wastewater into the water collecting tank 1 again, adding 20kg of calcium chloride, reducing the fluorine ion concentration to be below 10mg/L, recycling repeatedly, realizing zero discharge of the wastewater, and analyzing the results are as follows:
according to the analysis result, the final fluoride ions can be controlled within the required range (the index of the fluoride ions entering the reverse osmosis device is smaller than 50 mg/L), so that the method can be judged to be feasible, and the ideal operation effect can be achieved;
the device preliminarily realizes zero emission, the external drainage is reduced by about 40-50 sides every day, the fluorine ions of the reverse osmosis membrane water inflow are reduced, and a small amount of micro silicon powder in the wastewater can be partially settled, so that the service life of the reverse osmosis membrane is prolonged, and the operation of the device is ensured to be durable.
Specifically, the concentration mechanism is connected to the circulating water tank 3 through a water purifying pipe, and no water is discharged to the rainwater discharge system, so that the zero sewage discharge is realized.
Specifically, the water collecting tank 1 is connected to the plate and frame filter press 4 through a sewage discharge pipe, and is used for treating solid impurities formed after chemical precipitation.
In a specific embodiment, the concentration mechanism comprises a primary concentration mechanism 5 and a secondary concentration mechanism 6, the concentration tank comprises a primary concentration tank 7 and a secondary concentration tank 8, and the primary concentration mechanism 5, the primary concentration tank 7, the secondary concentration mechanism 6 and the secondary concentration tank 8 are sequentially connected.
In this embodiment, specifically, the primary concentration mechanism 5 is connected to the primary concentration tank 7 through the primary waste pipe 9, the secondary concentration mechanism 6 is connected to the secondary concentration tank 8 through the secondary waste pipe 10, the primary concentration mechanism 5 is connected to the circulating water tank 3 through the primary water purification pipe 11, and the secondary concentration mechanism 6 is connected to the circulating water tank 3 through the secondary water purification pipe 12.
Through the arrangement of the structure, the recovered wastewater is sequentially separated from clean water through the primary concentration mechanism 5 and the secondary concentration mechanism 6 and is recycled to the circulating water system, so that the production cost is reduced.
As shown in fig. 2, specifically, the primary concentration mechanism 5 and the secondary concentration mechanism 6 have the same structure, and taking the primary concentration mechanism 5 as an example, the primary concentration mechanism 5 is assembled by a plurality of reverse osmosis membrane filters 13, so as to achieve the purpose of filtering and separating purified water and wastewater.
In a specific embodiment, the sedimentation tank comprises a primary sedimentation tank 14 and a secondary sedimentation tank 15, and the water collecting tank 1, the primary sedimentation tank 14, the secondary sedimentation tank 15 and the water storage tank 2 are sequentially connected.
In this embodiment, specifically, the primary sedimentation tank 14 is connected to the polyaluminum chloride feeding pipe 16 and the polyacrylamide feeding pipe 17, and the secondary sedimentation tank 15 is connected to the polyacrylamide feeding pipe 17, so that fluorine ions are fully precipitated by a coagulation sedimentation method based on a calcium fluoride chemical sedimentation method, and the concentration of wastewater before passing through a reverse osmosis membrane is further reduced.
In a specific embodiment, the device further comprises an intermediate water tank 18, and the secondary sedimentation tank 15, the intermediate water tank 18 and the water storage tank 2 are sequentially connected.
In the present embodiment, specifically, the intermediate tank 18 serves to temporarily store the supernatant liquid after coagulating sedimentation.
In a specific embodiment, the water storage tank 2, the multi-medium filter 19 and the concentration mechanism are sequentially connected.
In the present embodiment, in particular, since solid particles generated by the preliminary chemical precipitation method and the coagulation precipitation method may not be completely precipitated, a small amount of the solid particles may not be prevented from entering the water storage tank 2, but when wastewater passes through the multi-medium filter 19, the solid particles may be filtered out, reducing the filtration load of the reverse osmosis membrane of the concentration mechanism.
Specifically, the multi-media filter 19 is an activated carbon filter.
In a specific embodiment, the water collecting tank further comprises a pH detector and a first fluoride ion detector, wherein the pH detector and the first fluoride ion detector are respectively arranged on the side wall of the water collecting tank 1.
In this embodiment, specifically, the pH detector is used to detect the pH value of the wastewater in the water collection tank 1, and the first fluoride ion detector is used to detect the fluoride ion concentration of the wastewater after the chemical precipitation method.
In a specific embodiment, the water storage tank further comprises a second fluoride ion detector, wherein the second fluoride ion detector is installed in an outlet pipeline of the water storage tank 2.
In this embodiment, specifically, the second fluoride ion detector is configured to detect the concentration of fluoride ions after chemical precipitation and coagulation precipitation, so as to finally confirm whether the concentration of fluoride ions in the wastewater is less than the index requirement (less than 50 mg/L) of the reverse osmosis membrane on fluoride ions.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (7)
1. A fluoride ion removal apparatus for wastewater containing fluorine, comprising:
the water collecting tank, the sedimentation tank, the water storage tank, the concentration mechanism and the concentration tank are sequentially and circularly connected;
wherein, the catch basin is connected in calcium hydrate pipeline, calcium chloride pipeline and fluorine-containing waste pipe respectively, enrichment facility internally mounted has reverse osmosis membrane, enrichment facility pass through waste pipe connect in concentrate jar for output filters the waste water after the separation, enrichment facility passes through water purification union coupling in circulating water pond for output filters the water purification after the separation.
2. The fluorine ion removal device for fluorine-containing wastewater according to claim 1, wherein,
the concentrating mechanism comprises a primary concentrating mechanism and a secondary concentrating mechanism, the concentrating tank comprises a primary concentrating tank and a secondary concentrating tank, and the primary concentrating mechanism, the primary concentrating tank, the secondary concentrating mechanism and the secondary concentrating tank are sequentially connected.
3. The fluorine ion removal device for fluorine-containing wastewater according to claim 1, wherein,
the sedimentation tank comprises a primary sedimentation tank and a secondary sedimentation tank, and the water collecting tank, the primary sedimentation tank, the secondary sedimentation tank and the water storage tank are sequentially connected.
4. The fluorine ion removal device for fluorine-containing wastewater according to claim 3, wherein,
the device also comprises an intermediate water tank, and the secondary sedimentation tank, the intermediate water tank and the water storage tank are sequentially connected.
5. The fluorine ion removal device for fluorine-containing wastewater according to claim 1, wherein,
the water storage tank, the multi-medium filter and the concentration mechanism are sequentially connected.
6. The fluorine ion removal device for fluorine-containing wastewater according to any one of claims 1 to 5,
the device also comprises a pH detector and a first fluoride ion detector, wherein the pH detector and the first fluoride ion detector are respectively arranged on the side wall of the water collecting tank.
7. The fluorine ion removal device for fluorine-containing wastewater according to any one of claims 1 to 5,
the device also comprises a second fluoride ion detector, wherein the second fluoride ion detector is arranged on an outlet pipeline of the water storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321356949.6U CN219823953U (en) | 2023-05-31 | 2023-05-31 | Fluoride ion removing device for fluoride-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321356949.6U CN219823953U (en) | 2023-05-31 | 2023-05-31 | Fluoride ion removing device for fluoride-containing wastewater |
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| Publication Number | Publication Date |
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| CN219823953U true CN219823953U (en) | 2023-10-13 |
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| CN202321356949.6U Active CN219823953U (en) | 2023-05-31 | 2023-05-31 | Fluoride ion removing device for fluoride-containing wastewater |
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| Country | Link |
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| CN (1) | CN219823953U (en) |
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