CN214115233U - Negative hard mine water zero-discharge treatment system - Google Patents
Negative hard mine water zero-discharge treatment system Download PDFInfo
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- CN214115233U CN214115233U CN202022895732.5U CN202022895732U CN214115233U CN 214115233 U CN214115233 U CN 214115233U CN 202022895732 U CN202022895732 U CN 202022895732U CN 214115233 U CN214115233 U CN 214115233U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 255
- 208000028659 discharge Diseases 0.000 title claims description 15
- 238000001728 nano-filtration Methods 0.000 claims abstract description 114
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 104
- 150000002500 ions Chemical class 0.000 claims abstract description 86
- 150000003839 salts Chemical class 0.000 claims abstract description 70
- 239000013078 crystal Substances 0.000 claims abstract description 41
- 239000012452 mother liquor Substances 0.000 claims abstract description 40
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 27
- 230000008014 freezing Effects 0.000 claims abstract description 15
- 238000007710 freezing Methods 0.000 claims abstract description 15
- 238000004062 sedimentation Methods 0.000 claims abstract description 15
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 8
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims abstract 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims abstract 4
- 235000010333 potassium nitrate Nutrition 0.000 claims abstract 4
- 238000004519 manufacturing process Methods 0.000 claims description 30
- 238000001704 evaporation Methods 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 229910001424 calcium ion Inorganic materials 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000010446 mirabilite Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000002455 scale inhibitor Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000011033 desalting Methods 0.000 claims description 2
- 230000003472 neutralizing effect Effects 0.000 claims 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 229910002651 NO3 Inorganic materials 0.000 description 10
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 10
- 239000000243 solution Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000012267 brine Substances 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 239000010413 mother solution Substances 0.000 description 5
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000033558 biomineral tissue development Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005262 decarbonization Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 230000007935 neutral effect Effects 0.000 description 1
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Abstract
The utility model provides a hard mine water zero release processing system of burden, including the raw water equalizing basin, one-level V type filtering pond, one-level ultrafiltration device, one-level reverse osmosis unit, the one-level decarbonizer, first high density sedimentation tank, second grade ultrafiltration device, resin softening installation, the second grade decarbonizer, second grade reverse osmosis unit, one-level nanofiltration device, receive and strain the product water tank, the second grade nanofiltration device, tertiary reverse osmosis device, first MVR evaporimeter, first MVR crystallizer, first pure salt desicator, monovalent ion terminal mother liquor tank, receive the thick water tank of straining that connects gradually with the thick water export of one-level nanofiltration device, second MVR evaporimeter, the saltpeter dissolving tank, second MVR crystallizer, freezing crystallizer, second pure salt desicator, third pure salt desicator and divalent ion terminal mother liquor tank. The utility model provides a burden is mine water zero release processing system firmly, reducible dosage, calcium magnesium ion, ammonia nitrogen and COD are got rid of to the high efficiency to obtain two kinds of crystal salt of high quality, realize burden and hold mine water zero release and handle firmly.
Description
Technical Field
The utility model relates to a water treatment technical field, concretely relates to burden is mine water zero release processing system firmly.
Background
The high-salinity mine water generally refers to mine water with the salt content of more than 1000mg/L, and the water quality is neutral or slightly alkaline. With the optimization of coal production and development layout, the national energy supply strategy moves to the west, so that the proportion of mine water with high mineralization of coal mines is greatly increased. According to statistics, about 30 percent of mine water in China is high-salinity mine water, and the proportion of the high-salinity mine water in the northwest area exceeds 50 percent, so that the problem that the development of the northwest coal mine is the most prominent problem is solved. Because the mine water with high mineralization is harmful, the mine water is lack of receiving water, and the drainage can cause soil and water loss, salinization, vegetation withering and the like on the earth surface. In recent two years, in inner Mongolia, the Bishui guard war is fully played, ecological civilization construction such as water quality improvement of a real basin, urban environment protection, mining area environment treatment and restoration, ecological construction, pollution control, tree planting and forestation in spring, grassland fire prevention, mine water zero discharge, concentrated brine resource utilization and the like is firmly achieved. In 2018, the original drainage port of the Wulanmulun basin where the Shendong group mining area is located is closed, zero waste water discharge is realized, and the water quality of the centralized drinking water source above cities and towns reaches or is superior to that of the III-class embodiment and is stabilized at 100%. However, the existing mine water treatment plants of Shendong group still operate according to the design of the emission standard of pollutants in coal industry, the emission limit value of the original standard is 100 times of the emission limit value required at present to the maximum extent, the risk of environmental penalty is faced, and the mine water zero emission treatment in mine areas under the flag becomes a necessary route.
At present, the technical cases of zero discharge of mine water are relatively few, and the salt content of the mine water is improved to about 100000mg/L after the high-salt mine water is subjected to re-concentration treatment by mainly utilizing a 'full-membrane wastewater zero discharge technology', and meanwhile, part of fresh water is recycled. The concentration treatment can reduce the volume of the high-salinity mine water to be treated by about 90 percent. And then, carrying out further evaporation crystallization or resource comprehensive utilization on a small amount of residual concentrated brine, such as adopting an evaporation pond, multi-effect evaporation, industrial salt making, snow melting agent production and the like, so as to realize the recycling and zero emission of substances in the concentrated brine to the greatest extent. However, coal mine water in multiple places in inner Mongolia is high in temporary hardness, the characteristic of negative hard water is presented, the alkali consumption is large during softening treatment, the operation cost is extremely high, and the redundant temporary hardness has higher scaling risk on a subsequent membrane system. On the other hand, the mine water consumption is large, the fluctuation of different water qualities along with the mining depth is large, and the stability of system operation is not facilitated. Therefore, the zero-discharge treatment method of the mine water, particularly the negative hard mine water is different from the traditional zero-discharge system of the desulfurization wastewater of the power plant, and has specific problems to be solved.
Disclosure of Invention
The utility model relates to a solve burden hard mine aquatic HCO3 -The problems of over-high concentration and complex components are solved by providing a negativeThe hard mine water zero-discharge treatment system removes HCO through a multi-stage concentration decrement and decarbonization device3 -And the two-stage nanofiltration and the like are combined in a targeted manner, so that the dosage of the medicament is reduced, calcium magnesium ions, ammonia nitrogen and COD (chemical oxygen demand) are efficiently removed, two high-quality crystal salts are obtained, and the zero discharge treatment of the negative hard mine water is realized.
The utility model provides a negative hard mine water zero discharge treatment system, which comprises a raw water regulating tank, a primary V-shaped filter tank, a primary ultrafiltration device, a primary reverse osmosis device, a primary decarbonizer, a first high-density sedimentation tank, a secondary ultrafiltration device, a resin softening device, a secondary decarbonizer, a secondary reverse osmosis device, a primary nanofiltration device, a nanofiltration water production tank, a secondary nanofiltration device, a tertiary reverse osmosis device, a first MVR evaporator, a first MVR crystallizer, a first pure salt dryer and a monovalent ion terminal mother liquor tank which are connected in sequence, a nanofiltration concentrated water tank, a second MVR evaporator, a nitrate dissolving tank, a second MVR crystallizer, a freezing crystallizer and a second pure salt dryer which are sequentially connected with a concentrated water outlet of the primary nanofiltration device, a third pure salt dryer and a divalent ion terminal mother liquor tank which are connected with the second MVR crystallizer, wherein the nanofiltration water production tank is connected with a water production outlet of the primary nanofiltration device;
the raw water adjusting tank, the primary V-shaped filter tank and the primary ultrafiltration device are used for adjusting and filtering the negative hard mine water, the primary reverse osmosis device is used for primary concentration of the negative hard mine water, and the primary decarbonizer is used for adding sulfuric acid to ensure that HCO in the negative hard mine water3 -Conversion to CO2Reducing negative hardness, wherein the first high-density sedimentation tank is used for removing calcium ions in the negative hard mine water, the second-stage ultrafiltration device is used for filtering impurities in the negative hard mine water, the resin softening device is used for removing calcium and magnesium ions in the negative hard mine water, and the second-stage decarbonizer is used for further removing HCO in the negative hard mine water3 -The second-stage reverse osmosis device is used for carrying out second-stage concentration on the negative hard mine water, the first-stage nanofiltration device is used for separating monovalent ions and divalent ions from the negative hard mine water to obtain first-stage nanofiltration device produced water and first-stage nanofiltration device concentrated water, the first-stage nanofiltration device produced water tank is used for storing the first-stage nanofiltration device produced water, and the second-stage nanofiltration device is used for producing the first-stage nanofiltration deviceThe water is separated into monovalent ions and divalent ions to obtain second-stage nanofiltration water and second-stage nanofiltration concentrated water, the third-stage reverse osmosis device is used for concentrating the second-stage nanofiltration water, the first MVR evaporator is used for evaporating and concentrating the second-stage nanofiltration water, the first MVR crystallizer is used for evaporating and crystallizing the second-stage nanofiltration water to obtain monovalent ion crystals and monovalent ion mother liquor, the first pure salt dryer is used for drying the monovalent ion crystals to obtain monovalent ion crystal finished products, the monovalent ion terminal mother liquor tank is used for storing the monovalent ion mother liquor, the nanofiltration concentrated water tank is used for storing the concentrated water of the first-stage nanofiltration device, the second MVR evaporator is used for evaporating and concentrating the concentrated water of the first-stage nanofiltration device, the nitrate dissolving tank is used for reacting the concentrated water of the first-stage nanofiltration device with the mirabilite dissolved in the nitrate dissolving tank to obtain divalent ion solution, and the second MVR crystallizer is used for evaporating and crystallizing the divalent ion solution to obtain divalent ion crystals and mixed salt mother liquor, the freezing crystallizer is used for freezing and crystallizing the mixed salt mother liquor to obtain mixed salt crystals and divalent ion terminal mother liquor, the second pure salt dryer is used for drying the divalent ion crystals to obtain divalent ion crystal finished products, the third pure salt dryer is used for drying the mixed salt crystals to obtain dried mixed salt crystals, and the divalent ion terminal mother liquor tank is used for storing the divalent ion terminal mother liquor.
A hard mine water zero release processing system of burden, as preferred mode, the export of third pure salt desicator links to each other with the water inlet that the one-level was received and is strained the device.
A burden is mine water zero release processing system firmly, as preferred mode, still set gradually first security filter and ammonia nitrogen reaction tank between second grade reverse osmosis unit and the one-level nanofiltration device.
A hard mine water zero release processing system of burden, as preferred mode, still set gradually second high density sedimentation tank, ozone reaction tank, active carbon filter, tertiary ultrafiltration device and second safety filter ware between ammonia nitrogen reaction tank and the one-level nanofiltration device.
A burden hard mine water zero release processing system, as preferred mode, still include demineralized water tank, lime device, FeCl3Device, PM dressMgO apparatus, soda apparatus, H2SO4The device comprises an HCl device, an NaOH device, a scale inhibitor device and a reducing agent device.
A burden is mine water zero release processing system firmly, as preferred mode, still include cleaning system, add medicine storage system, compressed air system, waste water neutralization system, electrical system and instrument control system.
A burden hard mine water zero release processing system, as preferred mode, one-level reverse osmosis unit uses SWRO membrane (sea water desalination reverse osmosis membrane), second grade reverse osmosis unit and tertiary reverse osmosis unit use the RO membrane.
The utility model discloses a burden hard mine water zero release processing system, as preferred mode, one-level reverse osmosis unit includes one-level reverse osmosis unit and one-level reverse osmosis unit B, the water inlet of one-level reverse osmosis unit links to each other with the delivery port of one-level ultrafiltration device, the dense mouth of a river of one-level reverse osmosis unit B links to each other with the water inlet of one-level decarbonization ware;
the concentrated water outlet of the first-stage reverse osmosis device is connected with the water inlet of the first-stage reverse osmosis device B, the produced water outlet of the first-stage reverse osmosis device is connected with the produced water outlet of the first-stage reverse osmosis device B, and the produced water is recycled.
The utility model discloses a burden hard mine water zero release processing system, as preferred mode, second grade reverse osmosis unit includes second grade reverse osmosis unit and second grade reverse osmosis unit B, and the water inlet of second grade reverse osmosis unit links to each other with the delivery port of second grade decarbonizer, and the dense mouth of second grade reverse osmosis unit B links to each other with one-level nanofiltration device;
the concentrated water outlet of the second-stage reverse osmosis device is connected with the water inlet of the second-stage reverse osmosis device B, the produced water outlet of the second-stage reverse osmosis device is connected with the produced water outlet of the first-stage reverse osmosis device B, and the produced water is recycled.
A burden hard mine water zero release processing system, as preferred mode, second grade reverse osmosis unit B's dense water export sets up urgent discharge port.
The water quality of the negative hard mine water is as follows:
the utility model has the advantages of it is following:
(1) concentration and decrement: in a process system, pre-concentration treatment is adopted, and mine water with large water volume is concentrated and reduced through a first-stage SWRO.
(2) Adding sulfuric acid to make HCO by using decarbonizer3 -Conversion to CO2Blow-off to reduce negative hardness, balance ion concentration for subsequent high-density tank calcium removal process (the main technology of the high-density sedimentation tank is carrier flocculation, and high-density insoluble medium particles are added in a coagulation stage), and reduce the dosage.
(3) The method adopts two-stage nanofiltration, adapts to the characteristic of variable water quality of mine water, improves the purity of sodium chloride crystal salt, improves the pollution resistance and the buffer property of a salt separation membrane system, avoids the risk of influencing the quality of the crystal salt due to the poor salt separation effect in the operation of a conventional one-stage nanofiltration system, and ensures the long-term reliable and stable operation of the system.
(4) The components in the mine water are complex, and the residual components such as calcium and magnesium ions, ammonia nitrogen, COD and the like after concentration influence the quality of the crystallized salt by-product obtained by zero discharge of the tail-end strong brine and influence the sale of the crystallized salt. The system adopts a comprehensive impurity removal treatment process to remove trace impurities in the strong brine, and removes calcium and magnesium ions of second-level and third-level RO inlet water through a chelate resin ion exchanger, wherein the removal rate is as high as 99%; the ammonia nitrogen is removed by adding chlorine at the break point, and the removal rate reaches more than 80 percent; COD is removed by an ozone-activated carbon filtration process, and the removal rate reaches more than 60 percent.
(5) The MVR thermal crystallization and the freezing crystallization are organically combined, the yield of pure salt is improved, the mixed salt of sodium sulfate and sodium chloride is dissolved back to the front of the first-stage nanofiltration, the total mixed salt amount is reduced by more than 30%, and the operation cost and the mixed salt treatment cost are reduced.
(6) The first-stage RO adopts a first-stage two-section (the stage is the frequency of the produced water passing through the membrane, and the section is the frequency of the concentrated water passing through the membrane), the inter-section reflux is carried out, and the recovery rate is 80 percent; the second-stage RO adopts a first-stage and a second-stage, and the recovery rate is 75 percent; an emergency discharge port is arranged at the position of the second-stage RO concentrated water, when the third-stage RO scales, the second-stage RO can independently operate, the concentrated water is discharged outside, and meanwhile, the third-stage RO can be maintained; the concentrated water of the second-level RO directly enters the third-level RO through a pump so as to save energy consumption, and the recovery rate of the third-level RO is 50 percent; the recovery rate of the treatment process system of the system is more than 95%.
(7) MVR + is frozen and crystallized to stably obtain I-class first-class sodium sulfate crystal salt, and the market value of byproducts is increased, and the indexes are as follows:
drawings
FIG. 1 is a structural diagram of an embodiment 1 of a negative hard mine water zero-discharge treatment system;
fig. 2 is a structure diagram of an embodiment 2 of a negative hard mine water zero-discharge treatment system.
Reference numerals:
1. a raw water adjusting tank; 2. a first-stage V-shaped filter chamber; 3. a primary ultrafiltration device; 4. a first-stage reverse osmosis device; 41. a first-stage reverse osmosis device A; 42. a first-stage reverse osmosis device B; 5. a primary decarbonizer; 6. a first high-density sedimentation tank; 7. a secondary ultrafiltration device; 8. a resin softening device; 9. a secondary decarbonizer; 10. a secondary reverse osmosis device; 10A, a secondary reverse osmosis device A; 10B, a secondary reverse osmosis device B; 5. a primary decarbonizer; 11. a first-stage nanofiltration device; 12. a nanofiltration water production tank; 13. a secondary nanofiltration device; 14. a third-stage reverse osmosis device; 15. a first MVR evaporator; 16. a first MVR crystallizer; 17. a first pure salt dryer; 18. a monovalent ion terminal mother liquor tank; 19. a nanofiltration concentrated water tank; 20. a second MVR evaporator; 21. a nitrate dissolving tank; 22. a second MVR crystallizer; 23. a freezing crystallizer; 24. a second pure salt dryer; 25. a third pure salt dryer; 26. a divalent ion terminal mother liquor tank; 27. a first security filter; 28. an ammonia nitrogen reaction tank; 29. a second high-density sedimentation tank; 30. an ozone reaction tank; 31. an activated carbon filter; 32. a third stage ultrafiltration device; 33. a second cartridge filter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Example 1
As shown in figure 1, the negative hard mine water zero emission treatment system comprises a raw water regulating tank 1, a primary V-shaped filter tank 2, a primary ultrafiltration device 3, a primary reverse osmosis device 4, a primary decarbonizer 5, a first high-density sedimentation tank 6, a secondary ultrafiltration device 7, a resin softening device 8, a secondary decarbonizer 9, a secondary reverse osmosis device 10, a primary nanofiltration device 11, a nanofiltration water production tank 12, a secondary nanofiltration device 13, a tertiary reverse osmosis device 14, a first MVR evaporator 15, a first MVR crystallizer 16, a first pure salt dryer 17, a monovalent ion terminal mother liquor tank 18, a nanofiltration concentrated water tank 19, a second MVR evaporator 20, a nitrate dissolving tank 21, a second MVR crystallizer 22, a freezing crystallizer 23, a second pure salt dryer 24, a third pure salt dryer 25 and a divalent ion terminal mother liquor tank 26 which are connected in sequence, wherein the concentrated water outlet of the primary nanofiltration device 11 is connected in sequence, the nanofiltration water production tank 12 is connected with a water production outlet of the primary nanofiltration device 11;
the raw water adjusting tank 1, the primary V-shaped filter tank 2 and the primary ultrafiltration device 3 are used for adjusting and filtering the negative hard mine water, the primary reverse osmosis device 4 is used for primary concentration of the negative hard mine water, and the primary decarbonizer 5 is used for adding sulfuric acid to ensure that HCO in the negative hard mine water3 -Conversion to CO2Reducing negative hardness, wherein the first high-density sedimentation tank 6 is used for removing calcium ions in the negative hard mine water, the second-stage ultrafiltration device 7 is used for filtering impurities in the negative hard mine water, the resin softening device 8 is used for removing calcium and magnesium ions in the negative hard mine water, and the second-stage decarbonizer 9 is used for further removing HCO in the negative hard mine water3 -The second-stage reverse osmosis device 10 is used for carrying out second-stage concentration on the negative hard mine water, and the first-stage nanofiltration device 11 is used for separating monovalent ions and divalent ions in negative hard mine water to obtain first-stage nanofiltration device water production and first-stage nanofiltration device concentrated water, a first-stage nanofiltration device water production tank 12 is used for storing the first-stage nanofiltration device water production, a second-stage nanofiltration device 13 is used for separating monovalent ions and divalent ions from the first-stage nanofiltration device water production to obtain second-stage nanofiltration water production and second-stage nanofiltration concentrated water, a third-stage reverse osmosis device 14 is used for concentrating the second-stage nanofiltration water production, a first MVR evaporator 15 is used for evaporating and concentrating the second-stage nanofiltration water production, a first MVR 16 is used for evaporating and crystallizing the second-stage nanofiltration water production to obtain monovalent ion crystals and monovalent ion mother liquor, a first pure salt dryer 17 is used for drying the monovalent ion crystals to obtain monovalent ion crystal finished products, a monovalent ion terminal mother liquor tank 18 is used for storing monovalent ion mother liquor, and a nanofiltration concentrated water tank 19 is used for storing the first-stage nanofiltration device concentrated water, the second MVR evaporator 20 is used for evaporating and concentrating the concentrated water of the first-stage nanofiltration device, the nitrate dissolving tank 21 is used for enabling the concentrated water of the first-stage nanofiltration device to react with the mirabilite dissolved in the nitrate dissolving tank 21 to obtain a divalent ion solution, the second MVR crystallizer 22 is used for evaporating and crystallizing the divalent ion solution to obtain divalent ion crystals and a mixed salt mother solution, the freezing crystallizer 23 is used for freezing and crystallizing the mixed salt mother solution to obtain mixed salt crystals and a divalent ion terminal mother solution, the second pure salt dryer 24 is used for drying the divalent ion crystals to obtain a divalent ion crystal finished product, the third pure salt dryer 25 is used for drying the mixed salt crystals to obtain dried mixed salt crystals, and the divalent ion terminal mother solution tank 26 is used for storing the divalent ion terminal mother solution.
Example 2
As shown in figure 2, the negative hard mine water zero emission treatment system comprises a raw water regulating tank 1, a primary V-shaped filter tank 2, a primary ultrafiltration device 3, a primary reverse osmosis device 4, a primary decarbonizer 5, a first high-density sedimentation tank 6, a secondary ultrafiltration device 7, a resin softening device 8, a secondary decarbonizer 9, a secondary reverse osmosis device 10, a primary nanofiltration device 11, a nanofiltration water production tank 12, a secondary nanofiltration device 13, a tertiary reverse osmosis device 14, a first MVR evaporator 15, a first MVR crystallizer 16, a first pure salt dryer 17, a monovalent ion terminal mother liquor tank 18, a nanofiltration concentrated water tank 19, a second MVR evaporator 20, a nitrate dissolving tank 21, a second MVR crystallizer 22, a freezing crystallizer 23, a second pure salt dryer 24, a third pure salt dryer 25 and a divalent ion terminal mother liquor tank 26 which are connected in sequence, wherein the concentrated water outlet of the primary nanofiltration device 11 is connected in sequence, the nanofiltration water production tank 12 is connected with a water production outlet of the primary nanofiltration device 11;
a first safety filter 27 and an ammonia nitrogen reaction tank 28 are sequentially arranged between the secondary reverse osmosis device 10 and the primary nanofiltration device 11;
a second high-density sedimentation tank 29, an ozone reaction tank 30, an activated carbon filter 31, a third-stage ultrafiltration device 32 and a second security filter 33 are sequentially arranged between the ammonia nitrogen reaction tank 28 and the first-stage nanofiltration device 11;
the raw water adjusting tank 1, the primary V-shaped filter tank 2 and the primary ultrafiltration device 3 are used for adjusting and filtering the negative hard mine water, the primary reverse osmosis device 4 is used for primary concentration of the negative hard mine water, and the primary decarbonizer 5 is used for adding sulfuric acid to ensure that HCO in the negative hard mine water3 -Conversion to CO2Reducing negative hardness, wherein the first high-density sedimentation tank 6 is used for removing calcium ions in the negative hard mine water, the second-stage ultrafiltration device 7 is used for filtering impurities in the negative hard mine water, the resin softening device 8 is used for removing calcium and magnesium ions in the negative hard mine water, and the second-stage decarbonizer 9 is used for further removing HCO in the negative hard mine water3 -The second-stage reverse osmosis device 10 is used for carrying out second-stage concentration on negative hard mine water, the first-stage nanofiltration device 11 is used for separating monovalent ions and divalent ions from the negative hard mine water to obtain first-stage nanofiltration device produced water and first-stage nanofiltration device concentrated water, the first-stage nanofiltration device water tank 12 is used for storing the first-stage nanofiltration device produced water, the second-stage nanofiltration device 13 is used for separating monovalent ions and divalent ions from the first-stage nanofiltration device produced water to obtain second-stage nanofiltration produced water and second-stage nanofiltration concentrated water, the third-stage reverse osmosis device 14 is used for concentrating the second-stage nanofiltration produced water, the first MVR evaporator 15 is used for evaporating and concentrating the second-stage nanofiltration produced water, the first MVR crystallizer 16 is used for evaporating and crystallizing the second-stage nanofiltration produced water to obtain monovalent ion crystals and monovalent ion mother liquor, the first pure salt dryer 17 is used for drying the monovalent ion crystals to obtain monovalent ion crystal finished products, and the monovalent ion terminal mother liquor tank 18 is used for reserving monovalent ion mother liquor.The concentrated nanofiltration water tank 19 is used for storing concentrated water of the primary nanofiltration device, the second MVR evaporator 20 is used for evaporating and concentrating the concentrated water of the primary nanofiltration device, the nitrate dissolving tank 21 is used for enabling the concentrated water of the primary nanofiltration device to react with mirabilite dissolved in the nitrate dissolving tank 21 to obtain a divalent ion solution, the second MVR crystallizer 22 is used for evaporating and crystallizing the divalent ion solution to obtain divalent ion crystals and mixed salt mother liquor, the freezing crystallizer 23 is used for freezing and crystallizing the mixed salt mother liquor to obtain mixed salt crystals and divalent ion terminal mother liquor, the second pure salt dryer 24 is used for drying the divalent ion crystals to obtain divalent ion crystal finished products, the third pure salt dryer 25 is used for drying the mixed salt crystals to obtain dried mixed salt crystals, and the divalent ion terminal mother liquor tank 26 is used for storing the divalent ion terminal mother liquor; the outlet of the third pure salt dryer 25 is connected with the water inlet of the first-stage nanofiltration device 11;
also comprises a desalting water tank, a lime device and FeCl3Device, PAM device, MgO device, soda device, H2SO4The device comprises a device, an HCl device, a NaOH device, a scale inhibitor device and a reducing agent device;
the device also comprises a cleaning system, a dosing storage system, a compressed air system, a wastewater neutralization system, an electrical system and an instrument control system;
the first-stage reverse osmosis device 4 uses a SWRO membrane, and the second-stage reverse osmosis device 10 and the third-stage reverse osmosis device 14 use RO membranes;
the primary reverse osmosis device 4 comprises a primary reverse osmosis device A41 and a primary reverse osmosis device B42, the water inlet of the primary reverse osmosis device A41 is connected with the water outlet of the primary ultrafiltration device 3, and the concentrated water inlet of the primary reverse osmosis device B42 is connected with the water inlet of the primary decarbonizer 5;
a concentrated water outlet of the first-stage reverse osmosis device A41 is connected with a water inlet of the first-stage reverse osmosis device B42, a water production outlet of the first-stage reverse osmosis device A41 is connected with a water production port of the first-stage reverse osmosis device B42, and produced water is recycled;
the second-stage reverse osmosis device 10 comprises a second-stage reverse osmosis device A10A and a second-stage reverse osmosis device B10B, a water inlet of the second-stage reverse osmosis device A10A is connected with a water outlet of the second-stage decarbonizer 9, and a concentrated water outlet of the second-stage reverse osmosis device B10B is connected with the first safety filter 27;
a concentrated water outlet of the second-stage reverse osmosis device A10A is connected with a water inlet of the second-stage reverse osmosis device B10B, a water production outlet of the second-stage reverse osmosis device A10A is connected with a water production port of the first-stage reverse osmosis device B10B, and produced water is recycled;
and a concentrated water outlet of the second-stage reverse osmosis device B10B is provided with an emergency discharge port.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A negative hard mine water zero discharge treatment system is characterized in that: comprises a raw water regulating tank (1), a primary V-shaped filter tank (2), a primary ultrafiltration device (3), a primary reverse osmosis device (4), a primary decarbonizer (5), a first high-density sedimentation tank (6), a secondary ultrafiltration device (7), a resin softening device (8), a secondary decarbonizer (9), a secondary reverse osmosis device (10), a primary nanofiltration device (11), a nanofiltration water production tank (12), a secondary nanofiltration device (13), a tertiary reverse osmosis device (14), a first MVR evaporator (15), a first MVR crystallizer (16), a first pure salt dryer (17), a monovalent ion terminal mother liquor tank (18), a nanofiltration concentrated water tank (19), a second MVR evaporator (20), a saltpeter dissolving tank (21), a second MVR crystallizer (22), a freezing crystallizer (23), a first pure salt terminal mother liquor tank (18), and a nanofiltration concentrated water outlet of the primary nanofiltration device (11) are sequentially connected, A second pure salt dryer (24), a third pure salt dryer (25) connected with the second MVR crystallizer (22) and a divalent ion terminal mother liquor tank (26), wherein the nanofiltration water production tank (12) is connected with a water production outlet of the primary nanofiltration device (11);
the raw water adjusting tank (1), the primary V-shaped filter tank (2) and the primary ultrafiltration device (3) are used for adjusting and filtering the hard mine negative water, the primary reverse osmosis device (4) is used for performing primary concentration on the hard mine negative water, and the primary decarbonizer (5) is used for adding sulfuric acid to enable the hard mine negative water to be concentratedHCO in the negative hard mine water3 -Conversion to CO2Reducing negative hardness, wherein the first high-density sedimentation tank (6) is used for removing calcium ions in the negative hard mine water, the second-stage ultrafiltration device (7) is used for filtering impurities in the negative hard mine water, the resin softening device (8) is used for removing calcium and magnesium ions in the negative hard mine water, and the second-stage decarbonizer (9) is used for further removing HCO in the negative hard mine water3 -The secondary reverse osmosis device (10) is used for carrying out secondary concentration on the hard mine water, the primary nanofiltration device (11) is used for separating monovalent ions and divalent ions from the hard mine water and obtaining primary nanofiltration device produced water and primary nanofiltration device concentrated water, the nanofiltration water production tank (12) is used for storing the primary nanofiltration device produced water, the secondary nanofiltration device (13) is used for separating monovalent ions and divalent ions from the primary nanofiltration device produced water and obtaining secondary nanofiltration produced water and secondary nanofiltration concentrated water, the tertiary reverse osmosis device (14) is used for concentrating the secondary nanofiltration produced water, the first MVR evaporator (15) is used for evaporating and concentrating the secondary nanofiltration produced water, and the first MVR crystallizer (16) is used for evaporating and crystallizing the secondary nanofiltration produced water to obtain monovalent ion crystals and monovalent ion mother liquor, the first pure salt dryer (17) is used for drying the monovalent ion crystals to obtain monovalent ion crystal finished products, the monovalent ion terminal mother liquor tank (18) is used for storing monovalent ion mother liquor, the nanofiltration concentrated water tank (19) is used for storing concentrated water of the first-stage nanofiltration device, the second MVR evaporator (20) is used for evaporating and concentrating concentrated water of the first-stage nanofiltration device, the saltpeter dissolving tank (21) is used for enabling the concentrated water of the first-stage nanofiltration device to react with mirabilite dissolved in the saltpeter dissolving tank (21) to obtain divalent ion solution, the second MVR crystallizer (22) is used for evaporating and crystallizing the divalent ion solution to obtain divalent ion crystals and mixed salt mother liquor, the freezing crystallizer (23) is used for freezing and crystallizing the mixed salt mother liquor to obtain mixed salt crystals and divalent ion terminal mother liquor, and the second pure salt dryer (24) is used for drying the divalent ion crystals to obtain divalent ion crystal finished products, the third pure salt dryer (25) is used for drying the mixed salt crystals to obtain dry saltDried mixed salt crystals, and a divalent ion termination mother liquor tank (26) for holding the divalent ion termination mother liquor.
2. The negative hard mine water zero emission treatment system according to claim 1, characterized in that: the outlet of the third pure salt dryer (25) is connected with the water inlet of the primary nanofiltration device (11).
3. The negative hard mine water zero emission treatment system according to claim 1, characterized in that: a first safety filter (27) and an ammonia nitrogen reaction tank (28) are sequentially arranged between the secondary reverse osmosis device (10) and the primary nanofiltration device (11).
4. The negative hard mine water zero emission treatment system according to claim 3, characterized in that: a second high-density sedimentation tank (29), an ozone reaction tank (30), an activated carbon filter (31), a three-stage ultrafiltration device (32) and a second security filter (33) are sequentially arranged between the ammonia nitrogen reaction tank (28) and the first-stage nanofiltration device (11).
5. The negative hard mine water zero emission treatment system according to claim 1, characterized in that: also comprises a desalting water tank, a lime device and FeCl3Device, PAM device, MgO device, soda device, H2SO4The device comprises an HCl device, an NaOH device, a scale inhibitor device and a reducing agent device.
6. The negative hard mine water zero emission treatment system according to claim 1, characterized in that: the system also comprises a cleaning system, a dosing storage system, a compressed air system, a waste water neutralizing system, an electrical system and an instrument control system.
7. The negative hard mine water zero emission treatment system according to claim 1, characterized in that: the primary reverse osmosis device (4) uses SWRO membranes, and the secondary reverse osmosis device (10) and the tertiary reverse osmosis device (14) use RO membranes.
8. The negative hard mine water zero emission treatment system according to claim 1, characterized in that: the primary reverse osmosis device (4) comprises a primary reverse osmosis device A (41) and a primary reverse osmosis device B (42), a water inlet of the primary reverse osmosis device A (41) is connected with a water outlet of the primary ultrafiltration device (3), and a concentrated water inlet of the primary reverse osmosis device B (42) is connected with a water inlet of the primary decarbonizer (5);
the concentrated water outlet of the first-stage reverse osmosis device A (41) is connected with the water inlet of the first-stage reverse osmosis device B (42), the produced water outlet of the first-stage reverse osmosis device A (41) is connected with the produced water outlet of the first-stage reverse osmosis device B (42), and the produced water is recycled.
9. The negative hard mine water zero emission treatment system according to claim 8, characterized in that: the secondary reverse osmosis device (10) comprises a secondary reverse osmosis device A (10A) and a secondary reverse osmosis device B (10B), a water inlet of the secondary reverse osmosis device A (10A) is connected with a water outlet of the secondary decarbonizer (9), and a concentrated water outlet of the secondary reverse osmosis device B (10B) is connected with the primary nanofiltration device (11);
the concentrated water outlet of the second-stage reverse osmosis device A (10A) is connected with the water inlet of the second-stage reverse osmosis device B (10B), the water production outlet of the second-stage reverse osmosis device A (10A) is connected with the water production port of the first-stage reverse osmosis device B (42), and the produced water is recycled.
10. The negative hard mine water zero emission treatment system according to claim 9, characterized in that: and a concentrated water outlet of the second-stage reverse osmosis device B (10B) is provided with an emergency discharge port.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751575A (en) * | 2022-04-25 | 2022-07-15 | 湖南东晟环保有限公司 | High-salt water zero-emission treatment system without generating miscellaneous salt |
| CN116655192A (en) * | 2023-08-01 | 2023-08-29 | 金科环境股份有限公司 | High mineral mine drainage water resourceful treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751575A (en) * | 2022-04-25 | 2022-07-15 | 湖南东晟环保有限公司 | High-salt water zero-emission treatment system without generating miscellaneous salt |
| CN116655192A (en) * | 2023-08-01 | 2023-08-29 | 金科环境股份有限公司 | High mineral mine drainage water resourceful treatment system |
| CN116655192B (en) * | 2023-08-01 | 2023-10-24 | 金科环境股份有限公司 | High mineral mine drainage water resourceful treatment system |
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