CN108298644A - A kind of efficient waste water salt separation concentrating and desalinating integrated apparatus - Google Patents
A kind of efficient waste water salt separation concentrating and desalinating integrated apparatus Download PDFInfo
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- CN108298644A CN108298644A CN201810215241.6A CN201810215241A CN108298644A CN 108298644 A CN108298644 A CN 108298644A CN 201810215241 A CN201810215241 A CN 201810215241A CN 108298644 A CN108298644 A CN 108298644A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 58
- 150000003839 salts Chemical class 0.000 title claims abstract description 26
- 238000000926 separation method Methods 0.000 title description 7
- 239000013505 freshwater Substances 0.000 claims abstract description 183
- 239000012528 membrane Substances 0.000 claims abstract description 72
- 239000012141 concentrate Substances 0.000 claims abstract description 27
- 239000003011 anion exchange membrane Substances 0.000 claims abstract description 14
- 238000005341 cation exchange Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 205
- 150000001768 cations Chemical class 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract description 8
- 238000010612 desalination reaction Methods 0.000 abstract description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract description 5
- 235000011152 sodium sulphate Nutrition 0.000 abstract description 5
- 239000012267 brine Substances 0.000 abstract description 4
- 235000017550 sodium carbonate Nutrition 0.000 abstract description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 4
- 239000000243 solution Substances 0.000 abstract description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011575 calcium Substances 0.000 abstract description 2
- 229910052791 calcium Inorganic materials 0.000 abstract description 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 238000005660 chlorination reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 19
- 235000002639 sodium chloride Nutrition 0.000 description 19
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 150000001450 anions Chemical class 0.000 description 7
- 238000000909 electrodialysis Methods 0.000 description 7
- 241000370738 Chlorion Species 0.000 description 6
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 6
- 238000011033 desalting Methods 0.000 description 6
- 229910001415 sodium ion Inorganic materials 0.000 description 6
- 235000011132 calcium sulphate Nutrition 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 239000011780 sodium chloride Substances 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 4
- 239000001110 calcium chloride Substances 0.000 description 4
- 229910001628 calcium chloride Inorganic materials 0.000 description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 102000005701 Calcium-Binding Proteins Human genes 0.000 description 1
- 108010045403 Calcium-Binding Proteins Proteins 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000007646 directional migration Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4602—Treatment of water, waste water, or sewage by electrochemical methods for prevention or elimination of deposits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
- B01D61/46—Apparatus therefor
- B01D61/48—Apparatus therefor having one or more compartments filled with ion-exchange material, e.g. electrodeionisation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4604—Treatment of water, waste water, or sewage by electrochemical methods for desalination of seawater or brackish water
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Electrochemistry (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
An embodiment of the present invention provides a kind of efficient waste water salt to detach concentrating and desalinating integrated apparatus, including：2nd area of one area of membrane stack and membrane stack, one area of membrane stack are provided with cathode pole room, concentrate circulation line a, fresh water circulation line a and multiple films to a；2nd area of membrane stack is provided with anode pole room, concentrate circulation line b and fresh water circulation line b and multimembrane to b；It is provided with fresh-water tank a on fresh water circulation line a, fresh-water tank b is provided on fresh water circulation line b；One area of membrane stack and two section of membrane stack are provided with intermediate freshwater room；Film includes cation-exchange membrane and chosen anion exchange membrane to a；Film includes anion-exchange membrane and selective cation-exchange membrane to b.The strong brine of easy fouling can be separated into the chlorination concentrated calcium solution and sodium sulphate concentrate of non-scaling by the present apparatus, and the softening of strong brine is realized without adding soda ash, save reagent cost；Desalination is carried out to waste water while salinity is classified, realizes the desalination of strong brine.
Description
Technical field
The present invention relates to water-treatment technology fields, integrally disguise more particularly to a kind of efficient waste water salt separation concentrating and desalinating
It sets.
Background technology
It is generated in the waste water and mine operation of waste water, the generation of coal chemical industry production process that power plant desulfurization process generates
In the waste water such as tail water, a large amount of noncarbonates, such as sodium chloride, calcium sulfate, magnesium sulfate are usually contained, especially most with calcium sulphate content
It is high.Calcium sulfate usually exists in the form of an ion in waste water, causes waste water hardness higher, and calcium sulfate leads to equipment scaling
Main matter easily influences equipment and runs well, it is therefore desirable to which the hardness for reducing above-mentioned waste water avoids setting when equipment scaling
Standby fouling.
For the existing method for reducing waste water hardness frequently with lime softening method, lime softening method is useless containing calcium sulfate
The softening medicament that such as sodium carbonate (soda ash) is added in water makes carbonate be generated with the calcium binding in waste water and precipitates, to
Calcium ion concentration in waste water is reduced, achievees the purpose that reduce hardness.But this method needs to consume a large amount of softening medicaments, causes
Cost for wastewater treatment is high.
Invention content
The embodiment of the present invention is designed to provide a kind of efficient waste water salt separation concentrating and desalinating integrated apparatus, to solve
The high problem of processing cost existing for the existing method for reducing waste water hardness.Specific technical solution is as follows：
An embodiment of the present invention provides a kind of efficient waste water salt to detach concentrating and desalinating integrated apparatus, including：One area of membrane stack
With 2nd area of membrane stack, one area of the membrane stack be provided with cathode pole room, concentrate circulation line a, fresh water circulation line a and it is multiple side by side
Film to a；2nd area of the membrane stack be provided with anode pole room, concentrate circulation line b and fresh water circulation line b and it is multiple side by side
Film is to b；It is provided on the fresh water circulation line a on fresh-water tank a, the fresh water circulation line b and is provided with fresh-water tank b, it is described
The fresh-water tank a and fresh-water tank b is symmetrical arranged；Intermediate freshwater room is provided between 2nd area of one area of the membrane stack and membrane stack, it is described
Fresh water circulation line a is connected to the fresh water circulation line b by the intermediate freshwater room；The film includes that cation is handed over to a
Change film and chosen anion exchange membrane；The film includes anion-exchange membrane and selective cation-exchange membrane to b.
Optionally, the fresh-water tank a and fresh-water tank b is using the center line between 2nd area of one area of the membrane stack and the membrane stack as axis
It is symmetrical set.
Optionally, the water inlet of the fresh-water tank a is connected to freshwater room water outlet in a by pipeline with the film；It is described
The water outlet of fresh-water tank a is connected to freshwater room water inlet in a by pipeline with the film；The water inlet of the fresh-water tank b and institute
Film is stated to be connected to the water outlet of freshwater room in b by pipeline；The water outlet of the fresh-water tank b is with the film to freshwater room in b
Water inlet is connected to by pipeline.
Optionally, the water inlet of the intermediate freshwater room is logical with the water outlet of the fresh-water tank a and the fresh-water tank b respectively
Piping is connected to；Water inlet of the water outlet of the intermediate freshwater room respectively with the fresh-water tank a and the fresh-water tank b passes through pipe
Road is connected to.
Optionally, it is provided with water outlet a on the fresh water circulation line a5；It is provided on the fresh water circulation line b
Water outlet b.
Optionally, the water inlet of dope case a, the dope case a and the film are provided in the concentrate circulation line a
The water outlet of concentrated water room in a is connected to by pipeline, the water outlet of the dope case a and the film enter water to concentrated water room in a
Mouth is connected to by pipeline.
Optionally, the water inlet of the dope case a and the film on concentrated water room water outlet is connected in a pipeline to being provided with
Dope water outlet a.
Optionally, the water inlet of dope case b, the dope case b and the film are provided in the concentrate circulation line b
The water outlet of concentrated water room in b is connected to by pipeline, the water outlet of the dope case b and the film enter water to concentrated water room in b
Mouth is connected to by pipeline.
Optionally, the water inlet of the dope case b and the film on concentrated water room water outlet is connected in b pipeline to being provided with
Dope water outlet b.
Optionally, described device further includes pole water tank a and pole water tank b, water inlet and the cathode pole of the pole water tank a
The water outlet of room is connected to by pipeline, and the water outlet of the pole water tank a is connected to the water inlet of the cathode pole room by pipeline；
The water inlet of the pole water tank b is connected to the water outlet of the anode pole room by pipeline, the water outlet of the pole water tank b and institute
The water inlet for stating anode pole room is connected to by pipeline.
A kind of efficient waste water salt provided in an embodiment of the present invention detaches concentrating and desalinating integrated apparatus, to high rigidity waste water
When being softened, it is not necessary that softening medicament is added, to save reagent consumption, cost for wastewater treatment is reduced；Due to by membrane stack subregion
Setting, each membrane stack subregion are both provided with a fresh water, concentrated water circulation line, can realize that the desalination of raw water and high magnification are dense
Reduction makes strong brine desalinate to carry out desalting processing to raw water；Also, by being respectively provided with one in each membrane stack subregion
Fresh water circulation line and fresh-water tank can not only waste water be added into membrane stack simultaneously, moreover it is possible to be greatly decreased in fresh water circulation line
Circulating path length makes waste water within the unit interval more times by film pair, while reducing present apparatus operating cost, also
Desalting efficiency can be improved.Certainly, it implements any of the products of the present invention or method must be not necessarily required to reach described above simultaneously
All advantages.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described.
Fig. 1 is the structural representation that a kind of efficient waste water salt provided in an embodiment of the present invention detaches concentrating and desalinating integrated apparatus
Figure.
In figure, 1. membrane stack, one area, 2. membrane stack, 2nd area, 3. cathode pole rooms, 4. concentrate circulation line a, 5. fresh water circulation pipes
Road a, 6. films are to a, 7. anode pole rooms, 8. concentrate circulation line b, 9. fresh water circulation line b, 10. films to b, 11. fresh-water tank a,
12. fresh-water tank b, 13. intermediate freshwater rooms, 14. water outlet a, 15. water outlet b, 16. dope case a, 17. dope case b, 18.
Dope water outlet a, 19. dope water outlet b, 20. pole water tank a, 21. pole water tank b.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The method of current reduction waste water hardness can also pass through selectivity using electroosmose process using electrodialysis principle
Amberplex makes the ion in waste water that directional migration occur, to reach the purpose for detaching the certain ions of waste water from waste water.
Existing electrodialysis plant is usually only arranged fresh-water tank after waste water injects fresh-water tank in the side of device and passes through fresh water circulation pipe
It is route the proximal and distal each film centering for flowing into electrodialysis plant successively, after each film centering outflow, then is flowed into after being converged by pipeline
Fresh-water tank can only realize the concentration and desalination of salinity, cannot achieve the Selective Separation of salinity, also, since waste water is only one
It is recycled in set fresh water circulation line, when waste water recycles in each film pair, as film is to far from fresh-water tank, circulating path length is gradual
Increase, the time of waste water circulation primary in fresh water circulation line is also progressively longer, and the desalting efficiency of waste water is to be improved；Separately
Outside, since a fresh-water tank is only arranged, waste water can only sequentially enter each film centering of electrodialysis plant from the side of circulating line
It, can be with as shown in Figure 1, an embodiment of the present invention provides a kind of efficient waste water salt to detach concentrating and desalinating integrated apparatus
Including：
Two area 2 of one area 1 of membrane stack and membrane stack.Wherein, one area 1 of membrane stack is provided with cathode pole room 3, freshwater room a, concentrated water room a, dense
Contracting liquid circulation line a4, fresh water circulation line a5 and multiple films side by side are to a6, it should be noted that part is only shown in Fig. 1
Film is to a6, and in practical application, film can increase or reduce the number of a6 according to wastewater treatment demand；Two area 2 of membrane stack is provided with
Anode pole room 7, freshwater room b, concentrated water room b, concentrate circulation line b8 and fresh water circulation line b9 and multiple films pair side by side
B10, it should be noted that part film is only shown in Fig. 1 to b10, in practical application, film can be according to waste water to the number of b10
Process demand increases or reduces.Each film by existing hydraulic fastener to can be fixed, and details are not described herein.Fresh water recycles
Fresh water of the pipeline a5 for one area 1 of membrane stack recycles, and fresh water of the fresh water circulation line b9 for two area 2 of membrane stack recycles.The present invention is real
It applies in example, by the way that membrane stack subregion to be arranged, fresh water and concentrated water recycle in respective subregion respectively, and highest can be reduced to be recycled originally
The half of path length makes waste water within the unit interval more times by film pair, to improve desalting efficiency.
It is provided with fresh-water tank a11 on above-mentioned fresh water circulation line a5, fresh-water tank b12 is provided on fresh water circulation line b9,
Fresh-water tank a11 and fresh-water tank b12 is symmetrical arranged, and specifically, fresh-water tank a11 and fresh-water tank b12 are with one area 1 of membrane stack and 2nd area of membrane stack
Center line between 2 is symmetrical set for axis.Existing electrodialysis plant does not have due to there was only a set of fresh water circulation line
Necessity two fresh-water tanks of setting, but waste water can only sequentially enter electrodialysis after fresh-water tank addition from the side of circulating line
Each film centering of device equally exists the problem of cycle period length.In the embodiment of the present invention, pass through two positional symmetries of setting
Fresh-water tank makes the intake pressure of two sets of fresh water circulation lines be more easy to reach balance, and can be simultaneously to fresh-water tank a11 and fresh-water tank
Waste water is added in b12, and the waste water in two fresh-water tanks, can respectively by fresh water circulation line a5 and fresh water circulation line b9 cycles
Cycle-index of the waste water within the unit interval is greatly improved, to improve desalting efficiency.
In the embodiment of the present invention, the film in one area 1 of membrane stack forms entire membrane stack to the film in two area 2 a6 and membrane stack to b10
System.Film includes that cation-exchange membrane and chosen anion exchange membrane specifically can be in two cation-exchange membranes to a6
Between be arranged a chosen anion exchange membrane, composition one film to a6.Wherein, cation-exchange membrane is referred to through sun
Ion, the selectivity for retaining anion penetrate film；Chosen anion exchange membrane, be refer to optionally through monovalence the moon from
Son, such as chlorion can retain divalent or more high-valence anion, as the selectivity of sulfate radical and other cations penetrates film.It is useless
Water enters fresh water circulation line a5 by fresh-water tank a11, then is delivered to freshwater room of the film to a6 by water pump, useless in freshwater room
Under the function of current, cation is constantly migrated to cathode direction water, and anion is constantly migrated to anode direction, also, is being selected
Property anion-exchange membrane under the action of, chlorion in freshwater room is constantly migrated to concentrated water room, and sulfate radical is trapped within freshwater room.
Chlorion in concentrated water room is on the increase, and chlorion is present in the form of calcium chloride, sodium chloride in concentrated water room, and passes through concentration
The continuous circulative accumulations of liquid circulation line a4.
Film includes anion-exchange membrane and selective cation-exchange membrane to b10 can specifically hand in two anion
The selective cation-exchange membrane of setting one between film is changed, one film of composition is to b10.Wherein, anion-exchange membrane is to refer to
Film is penetrated through the selectivity of anion, retention cation；Selective cation-exchange membrane is referred to optionally through one
Valence cation, such as sodium ion can retain divalent or more high-valence cationic, as the selectivity of calcium ion and other anion penetrates
Film.Waste water enters fresh water circulation line b9 by fresh-water tank b12, then is delivered to freshwater room of the film to b10, freshwater room by water pump
In waste water under the function of current, cation constantly to cathode direction migrate, anion constantly to anode direction migrate, also,
Under the action of selective cation-exchange membrane, the sodium ion in freshwater room is constantly migrated to concentrated water room, and calcium ion is trapped within
Freshwater room.Sodium ion in concentrated water room is on the increase, and sodium ion is present in the form of sodium chloride, sodium sulphate in concentrated water room, and
Pass through the continuous circulative accumulations of concentrate circulation line b8.It should be noted that the required various ions of the above-mentioned realization present invention
Exchange membrane can be bought by commercial sources, and therefore not to repeat here by the present invention.
It is provided with intermediate freshwater room 13, fresh water circulation line a5 and fresh water circulation pipe between two area 2 of one area 1 of membrane stack and membrane stack
Road b9 is connected to by intermediate freshwater room 13, makes the charge balance of liquid in fresh water circulation line a5 and fresh water circulation line b9.It needs
It is noted that the side of intermediate freshwater room 13 can be the cation-exchange membrane positioned at the film of one area of membrane stack, 1 distalmost end to a6,
The other side of intermediate freshwater room 13 can be the anion-exchange membrane positioned at the film of 2nd area of membrane stack, 2 distalmost end to b10；It can also be straight
It connects and chamber is formed by cation-exchange membrane and anion-exchange membrane and corresponding partition board.
In a kind of specific implementation mode of the present invention, in one area 1 of membrane stack, the water inlet and film of fresh-water tank a11 is in a6
Freshwater room water outlet is connected to by pipeline, and the water outlet of fresh-water tank a11 is connected to freshwater room water inlet in a6 by pipeline with film.
Waste water enters fresh water circulation line a5 by fresh-water tank a11, is delivered to freshwater room of the film to a6 by water pump, returns again to fresh water
Case a11 completes the once cyclic process in fresh water circulation line a5.
As a kind of optional embodiment of the embodiment of the present invention, it is provided with water outlet a14 on fresh water circulation line a5,
A part of the pipeline that 13 water outlet of intermediate freshwater room is connected to fresh-water tank a11 water inlets as fresh water circulation line a5, in reality
In the application of border, water outlet a14 can be arranged on the pipeline.It is recycled in the fresh water circulation line a5 in one area 1 of membrane stack light
Water can be flowed out by water outlet a14, and salt content is reduced to 5000~10000mg/L, can further pass through reverse osmosis work
Skill carries out advanced desalination.
In a kind of specific implementation mode of the present invention, in two area 2 of membrane stack, the water inlet and film of fresh-water tank b12 is in b10
Freshwater room water outlet is connected to by pipeline, and the water outlet of fresh-water tank b12 is connected freshwater room water inlet in b10 by pipeline with film
It is logical.Waste water enters fresh water circulation line b9 by fresh-water tank b12, and freshwater room of the film to b10 is delivered to by water pump, return again to
Fresh-water tank b12 completes the once cyclic process in fresh water circulation line b9.
Fresh water can equally be arranged as a kind of optional embodiment of the embodiment of the present invention, on fresh water circulation line b9 to go out
Mouthful b15, one as fresh water circulation line b9 of the pipeline that 13 water outlet of intermediate freshwater room is connected to fresh-water tank b12 water inlets
Point, in practical applications, water outlet b15 can be arranged on the pipeline.It is followed in the fresh water circulation line b9 in two area 2 of membrane stack
The fresh water of ring can be flowed out by water outlet b15, and salt content is reduced to 5000~10000mg/L, can be further by anti-
Osmosis process carries out advanced desalination.Compared to existing electrodialysis plant, the embodiment of the present invention can be respectively positioned at membrane stack one
Water outlet is set on the fresh water circulation line in 2nd area of area and membrane stack, improves the fresh water outlet amount of entire membrane stack system.
In a kind of specific implementation mode of the present invention, the water inlet of intermediate freshwater room 13 respectively with fresh-water tank a11 and light
The water outlet of water tank b12 is connected to by pipeline, and the fresh water in fresh water circulation line a5 and fresh water circulation line b9 can converge at
In intermediate freshwater room 13；Water inlet of the water outlet of intermediate freshwater room 13 respectively with fresh-water tank a11 and fresh-water tank b12 passes through pipeline
Connection, the fresh water for converging at intermediate freshwater room 13 are divided into and do not flow back to fresh water circulation line a5 and fresh water circulation line b9, make fresh water
The charge balance of liquid in circulation line a5 and fresh water circulation line b9.
In a kind of specific implementation mode of the present invention, in one area 1 of membrane stack, dope is provided in concentrate circulation line a4
The water inlet of case a16, dope case a16 are connected to the water outlet of concentrated water room in a6 by pipeline with film, the water outlet of dope case a16
The water inlet of concentrated water room in a6 is connected to by pipeline with the film.Dope is conveyed from the water outlet of dope case a16 by water pump
To film to the dope that in the concentrated water room of a6, is generated in concentrated water room from the water outlet of concentrated water room, by pipeline flow-direction dope case a16,
Complete the once cycle in concentrate circulation line a4.Dope in above-mentioned concentrate circulation line a4 contain a large amount of calcium from
Son, sodium ion and chlorion, can specifically exist in the form of calcium chloride and sodium chloride.
As a kind of optional embodiment of the embodiment of the present invention, dope water outlet can be set on concentrate circulation line a4
The water inlet of mouthful a18, dope case a16 and film are to concentrated water room water outlet is connected in a6 pipeline as concentrate circulation line a4's
A part, in practical applications, dope water outlet a18 can be arranged on the pipeline.Concentrate circulation pipe in one area 1 of membrane stack
The dope recycled in the a4 of road can be flowed out by dope water outlet a18, and salt content is increased to 20000mg/L or more.
In a kind of specific implementation mode of the present invention, in two area 2 of membrane stack, dope is provided in concentrate circulation line b8
The water inlet of case b17, dope case b17 are connected to the water outlet of concentrated water room in b10 by pipeline with film, the water outlet of dope case b17
Mouth is connected to the water inlet of concentrated water room in b10 by pipeline with film.Dope is conveyed from the water outlet of dope case b17 by water pump
To film to the dope that in the concentrated water room of b10, is generated in concentrated water room from the water outlet of concentrated water room, by pipeline flow-direction dope case b17,
Complete the once cycle in concentrate circulation line b8.Dope in above-mentioned concentrate circulation line b8 contains a large amount of sulfuric acid
Root, sodium ion and chlorion can specifically exist in the form of sodium sulphate and sodium chloride.
As a kind of optional embodiment of the embodiment of the present invention, dope water outlet can be set on concentrate circulation line b8
The water inlet of mouthful b19, dope case b17 and film are to concentrated water room water outlet is connected in b10 pipeline as concentrate circulation line b8
A part, in practical applications, dope water outlet b19 can be arranged on the pipeline.Concentrate in two area 2 of membrane stack recycles
The dope recycled in pipeline b8 can be flowed out by dope water outlet b19, and salt content is increased to 20000mg/L or more.
As a kind of optional embodiment of the embodiment of the present invention, the present apparatus can also include pole water tank a20 and pole water tank
The water inlet of b21, pole water tank a20 are connected to the water outlet of cathode pole room 3 by pipeline, the water outlet and cathode of pole water tank a20
The water inlet of pole room 3 is connected to by pipeline, forms cathode pole water circulation pipe.In cathode pole room, cathode electrode plate is constantly discharged
The pole water of hydrogen, generation contains hydroxyl, and pole water is usually in alkalinity.The water outlet of the water inlet and anode pole room 7 of pole water tank b21
It is connected to by pipeline, the water outlet of pole water tank b21 is connected to the water inlet of anode pole room 7 by pipeline, is formed anode pole water and is followed
Endless tube road.In anode pole room, chlorine is constantly discharged in anode electrode plate, and the pole water of generation contains hydrogen ion, and pole water is usually in acidity.
It, can be by the pole water and anode pole room 7 in cathode pole room 3 as a kind of optional embodiment of the embodiment of the present invention
Interior pole water connection mitigates the corrosion to cathode pole room 3 and anode pole room 7 to make pole water acid-base neutralization.
A kind of efficient waste water salt provided by the invention detaches concentrating and desalinating integrated apparatus, can be by high rigidity wastewater treatment
For the calcium chloride dope and sodium sulphate dope of non-scaling cost for wastewater treatment is reduced without adding soda ash as softening medicament；It is former
Water is desalinated after salinity separation migration, and production water can further pass through reverse osmosis carry out advanced desalination.Salinity is isolated
Calcium chloride and sodium sulphate constantly recycle concentration, concentrate concentration can direct resource up to 200000mg/L or more, concentrate
Change utilize, also can further evaporative crystallization prepare crystal salt, also can two kinds concentration hybrid reactions formed gypsum, improve resource profit
With rate；On this basis, since membrane stack subregion to be arranged, each membrane stack subregion is both provided with a fresh water circulation line and one
Fresh-water tank can not only waste water be added into membrane stack simultaneously, moreover it is possible to the circulation path path length in original fresh water circulation line be greatly decreased
Degree, makes waste water within the unit interval more times by film pair, while reducing present apparatus operating cost, additionally it is possible to carry significantly
This high desalting efficiency.
It should be noted that in the efficient waste water salt separation concentrating and desalinating integrated apparatus of the present invention, in each of device
Trandfer fluid between part, such as liquid, such as waste water, fresh water, various dopes or solid, such as precipitation and various medicaments, are removed
It is otherwise noted, can generally pass through Pipeline transport；In addition, when needing additional transmission power in transmission process,
The power-equipments such as suitable pump, wind turbine can be added on the pipeline of needs.It further, can also when needed, in pipeline
It is upper to increase suitable valve, to control the flow direction etc. of fluid.
It should be noted that herein, such as term " comprising " or its any other variant are intended to non-exclusive
Property include so that including a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
Each embodiment in this specification is all made of relevant mode and describes, identical similar portion between each embodiment
Point just to refer each other, and each embodiment focuses on the differences from other embodiments.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of efficient waste water salt detaches concentrating and desalinating integrated apparatus, which is characterized in that including：One area of membrane stack (1) and membrane stack
2nd area (2), one area of the membrane stack (1) are provided with cathode pole room (3), concentrate circulation line a (4), fresh water circulation line a (5)
With multiple films side by side to a (6)；2nd area of the membrane stack (2) is provided with anode pole room (7), concentrate circulation line b (8) and light
Water circulation pipe b (9) and multiple films side by side are to b (10)；It is provided with fresh-water tank a (11) on the fresh water circulation line a (5),
Fresh-water tank b (12) is provided on the fresh water circulation line b (9), the fresh-water tank a (11) and the fresh-water tank b (12) are symmetrical
Setting；Intermediate freshwater room (13), the fresh water circulation line a are provided between one area of the membrane stack (1) and 2nd area of membrane stack (2)
(5) it is connected to by the intermediate freshwater room (13) with the fresh water circulation line b (9)；The film includes that cation is handed over to a (6)
Change film and chosen anion exchange membrane；The film includes anion-exchange membrane and selective cation-exchange membrane to b (10).
2. efficient waste water salt according to claim 1 detaches concentrating and desalinating integrated apparatus, which is characterized in that the fresh water
Case a (11) and fresh-water tank b (12) are symmetrical as axis using the center line between one area of the membrane stack (1) and 2nd area of the membrane stack (2)
Setting.
3. efficient waste water salt according to claim 1 or 2 detaches concentrating and desalinating integrated apparatus, which is characterized in that described
The water inlet of fresh-water tank a (11) is connected to freshwater room water outlet in a (6) by pipeline with the film；The fresh-water tank a (11)
Water outlet is connected to freshwater room water inlet in a (6) by pipeline with the film；The water inlet of the fresh-water tank b (12) with it is described
Film is connected to the water outlet of freshwater room in b (10) by pipeline；The water outlet of the fresh-water tank b (12) is with the film to b (10)
The water inlet of middle freshwater room is connected to by pipeline.
4. efficient waste water salt according to claim 3 detaches concentrating and desalinating integrated apparatus, which is characterized in that the centre
The water inlet of freshwater room (13) is connected to the water outlet of the fresh-water tank a (11) and the fresh-water tank b (12) by pipeline respectively；
Water inlet of the water outlet of the intermediate freshwater room (13) respectively with the fresh-water tank a (11) and the fresh-water tank b (12) passes through
Pipeline is connected to.
5. efficient waste water salt according to claim 4 detaches concentrating and desalinating integrated apparatus, which is characterized in that the fresh water
Freshwater room outlet a (14) is provided on circulation line a (5)；Freshwater room outlet b is provided on the fresh water circulation line b (9)
(15)。
6. efficient waste water salt according to claim 1 detaches concentrating and desalinating integrated apparatus, which is characterized in that the concentration
Dope case a (16) is provided in liquid circulation line a (4), the water inlet and the film of the dope case a (16) are to concentrated water in a (6)
The water outlet of room is connected to by pipeline, and the water outlet of the dope case a (16) is with the film to the water inlet of concentrated water room in a (6)
It is connected to by pipeline.
7. efficient waste water salt according to claim 6 detaches concentrating and desalinating integrated apparatus, which is characterized in that the dope
It is provided with dope water outlet a (18) on the pipeline that the water inlet of case a (16) is connected to concentrated water room water outlet in a (6) with the film.
8. efficient waste water salt according to claim 1 detaches concentrating and desalinating integrated apparatus, which is characterized in that the concentration
It is provided with dope case b (17) in liquid circulation line b (8), the water inlet of the dope case b (17) is with the film to dense in b (10)
The water outlet of hydroecium is connected to by pipeline, and the water outlet of the dope case b (17) and the film enter water to concentrated water room in b (10)
Mouth is connected to by pipeline.
9. efficient waste water salt according to claim 8 detaches concentrating and desalinating integrated apparatus, which is characterized in that the dope
It is provided with dope water outlet b on the pipeline that the water inlet of case b (17) is connected to concentrated water room water outlet in b (10) with the film
(19)。
10. efficient waste water salt according to claim 1 detaches concentrating and desalinating integrated apparatus, which is characterized in that the dress
It further includes pole water tank a (20) and pole water tank b (21) to set, the water inlet of the pole water tank a (20) and going out for cathode pole room (3)
The mouth of a river is connected to by pipeline, and the water outlet of the pole water tank a (20) and the water inlet of the cathode pole room (3) are connected by pipeline
It is logical；The water inlet of the pole water tank b (21) is connected to the water outlet of the anode pole room (7) by pipeline, the pole water tank b
(21) water outlet is connected to the water inlet of the anode pole room (7) by pipeline.
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| CN112479421A (en) * | 2020-11-10 | 2021-03-12 | 西安西热水务环保有限公司 | High-hardness wastewater softening and resource recycling system and method |
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