CN104815556A - Salting electrodialysis device - Google Patents
Salting electrodialysis device Download PDFInfo
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- CN104815556A CN104815556A CN201510209381.9A CN201510209381A CN104815556A CN 104815556 A CN104815556 A CN 104815556A CN 201510209381 A CN201510209381 A CN 201510209381A CN 104815556 A CN104815556 A CN 104815556A
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- Prior art keywords
- hydroecium
- communicated
- pipeline
- dense
- film unit
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- 238000000909 electrodialysis Methods 0.000 title claims abstract description 22
- 238000009938 salting Methods 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 39
- 239000011780 sodium chloride Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000013505 freshwater Substances 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 238000005341 cation exchange Methods 0.000 claims description 16
- 239000012528 membrane Substances 0.000 claims description 16
- 150000003839 salts Chemical class 0.000 claims description 16
- 239000010801 sewage sludge Substances 0.000 claims description 15
- 239000010802 sludge Substances 0.000 claims description 13
- 239000003011 anion exchange membrane Substances 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 8
- 238000012958 reprocessing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 9
- 238000011268 retreatment Methods 0.000 abstract 1
- 238000010612 desalination reaction Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007646 directional migration Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- PVGBHEUCHKGFQP-UHFFFAOYSA-N sodium;n-[5-amino-2-(4-aminophenyl)sulfonylphenyl]sulfonylacetamide Chemical compound [Na+].CC(=O)NS(=O)(=O)C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 PVGBHEUCHKGFQP-UHFFFAOYSA-N 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Abstract
The invention discloses a salting electrodialysis device comprising a cathode (1), a film unit (2) and an anode (3). The cathode (1) is arranged and fixed with the film unit (2) and the anode (3) which are stacked in parallel connection, a raw water inlet pipe (4) and a sodium chloride liquid inlet pipe (5) are arranged at the bottom of the film unit (2), the top of the film unit (2) is provided with a fresh water outlet pipe (6), a sodium chloride liquid recovery pipe (7), a first concentrated water pipe (8) and a second concentrated water pipe (9), and the first concentrated water pipe (8) and the second concentrated water pipe (9) are connected with a waste liquid retreatment and recovery device (17). The salting electrodialysis device has the advantages of low noise, high recovery rate and no scaling.
Description
Technical field
The present invention relates to a kind of electrodialysis plant, particularly a kind of salt adding electrodialysis plant.
Background technology
Electrodialysis is a kind of ion isolation technology combined through film with ion selectivity with DC electric field, charged ion is under the effect of electric field, cation, the anion of freshwater room pass selective through after film, leave the water outlet that salt content is lower than water inlet, dense hydroecium is then enriched the ion from adjacent freshwater room, form the water outlet that salt content is higher than water inlet, so just achieve the desalination of solution, concentrated, refining or purifying.
Electrodialysis plant has wide range of applications, can be applicable to the desalination desalination of water, seawater concentrates salt manufacturing, refine dairy products, fruit juice depickling essence and purification, produce the aspects such as chemical products, food can also be used for, the pre-treatment of the industrial producing high purity waters such as industry Pure-water Making, electronics, medicine such as light industry, brackish water desalination is drinking water by the elementary softening desalination of boiler feedwater.
Electrodialysis plant is applicable to the Water purification of the industries such as electronics, medicine, chemical industry, thermal power generation, food, beer, beverage, printing and dyeing and application, also can be used for the physical and chemical processes such as concentrated, the purification of material, separation.
Electrodialysis can also be used for waste water, the process of waste liquid and the recovery of precious metal, as reclaimed nickel from electroplating effluent.
Existing comprise electrodialysis plant treatment process and device in, the water inlet due to freshwater room and dense hydroecium is all the fresh water/dense aquatic products water of former water or this device, also has many combinations, to adapt to different engineer applied in application for many years.
But, in these application, enrichment a lot of anions and canons easily can form insoluble inorganic salts and cause fouling in dense hydroecium, affect the long-term stability operation of electrodialysis plant.
Summary of the invention
The object of the invention is to, provide a kind of salt adding electrodialysis plant, it has, and noise is little, the rate of recovery is high and the advantage of non-scaling.
Technical scheme of the present invention: a kind of salt adding electrodialysis plant, comprise negative electrode, film unit and anode, the film unit that negative electrode, parallel connection are superimposed and anode arrange in turn and are fixed together, the bottom of film unit is provided with former water inlet pipeline and sodium chloride water influent pipeline, the top of film unit is provided with fresh water outlet pipeline, sodium chloride solution reclaim line, the first dense water lines and the second dense water lines, and the first dense water lines is all connected with waste liquid reprocessing retracting device with the second dense water lines.
In aforesaid salt adding electrodialysis plant, described film unit comprises 3 cation-exchange membranes, 2 anion-exchange membranes and 5 dividing plates, cation-exchange membrane and anion-exchange membrane are disposed alternately on 5 dividing plates, the first hydroecium, the second hydroecium, the 3rd hydroecium and the 4th hydroecium is formed between cation-exchange membrane and anion-exchange membrane, between the cation-exchange membrane and negative electrode of end, form the first pole hydroecium, between the cation-exchange membrane and anode of the other end, form the second pole hydroecium.The hard polyvinyl chloride plate that lmm ~ 2mm commonly used by dividing plate is made, and plate has distributing hole, cloth tank, flowing flux, water leg and gully-hole.
In aforesaid salt adding electrodialysis plant, described former water inlet pipeline is communicated with the bottom of all first hydroeciums; Sodium chloride water influent pipeline is communicated with the bottom of all 3rd hydroeciums; The top of all first hydroeciums all with fresh water outlet pipeline connection; The top of all 3rd hydroeciums is all communicated with sodium chloride solution reclaim line; All dense with first water lines in top of all second hydroeciums is communicated with; All dense with second water lines in top of all 4th hydroeciums is communicated with.By being drawn and reuse by the dense water of the 3rd hydroecium and the 4th hydroecium, there is the very high rate of recovery.By feeding sodium chloride solution to the 3rd hydroecium, therefore at the solution non flouling behaviour that the 3rd hydroecium and the 4th hydroecium produce.
In aforesaid salt adding electrodialysis plant, waste liquid reprocessing retracting device comprises sewage sludge storage pond and sludge dewatering pond, the bottom in sewage sludge storage pond is communicated with sludge dewatering pond by pipeline, first dense water lines is all communicated with the top in sewage sludge storage pond with the second dense water lines, sludge dewatering pond is provided with Discharge line for solids road and filtrate recycle pipeline, can get back to the former water water inlet pipe of this device after suitable process, the top in sewage sludge storage pond is by connecting line and filtrate recycle pipeline connection.By arranging sewage sludge storage pond, the clear liquid on its top can be recycled, as electrodialytic former water, there is the higher rate of recovery.
Compared with prior art, the present invention under low pressure runs, and has the advantage that noise is little, by being drawn and reuse by the dense water of the 3rd hydroecium and the 4th hydroecium, has the very high rate of recovery.By feeding sodium chloride solution to the 3rd hydroecium, therefore at the solution non flouling behaviour that the 3rd hydroecium and the 4th hydroecium produce.By arranging sewage sludge storage pond, the clear liquid on its top can be recycled, as electrodialytic former water, there is the higher rate of recovery.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Being labeled as in accompanying drawing: 1-negative electrode, 2-film unit, 3-anode, the former water inlet pipeline of 4-, 5-sodium chloride water influent pipeline, 6-fresh water outlet pipeline, 7-sodium chloride solution reclaim line, the dense water lines of 8-first, the dense water lines of 9-second, 10-cation-exchange membrane, 11-anion-exchange membrane, 12-first hydroecium, 13-second hydroecium, 14-the 3rd hydroecium, 15-the 4th hydroecium, 16-first pole hydroecium, 17-waste liquid reprocessing retracting device, 18-dividing plate, 19-second pole hydroecium, 20-filtrate recycle pipeline, 21-Discharge line for solids road, 22-sludge dewatering pond, 23-sewage sludge storage pond.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiments of the invention: as shown in Figure 1, a kind of salt adding electrodialysis plant, comprise negative electrode 1, film unit 2 and anode 3, the film unit 2 that negative electrode 1, parallel connection are superimposed and anode 3 arrange in turn and are fixed together, the bottom of film unit 2 is provided with former water inlet pipeline 4 and sodium chloride water influent pipeline 5, the top of film unit 2 is provided with fresh water outlet pipeline 6, the dense water lines 8 of sodium chloride solution reclaim line 7, first and the dense water lines 8 of the second dense water lines 9, first and is all connected with waste liquid reprocessing retracting device 17 with the second dense water lines 9.
Described film unit 2 comprises 3 cation-exchange membranes, 10,2 anion-exchange membranes 11 and 5 dividing plates 18, cation-exchange membrane 10 and anion-exchange membrane 11 are disposed alternately on 5 dividing plates 18, the first hydroecium 12, second hydroecium 13, the 3rd hydroecium 14 and the 4th hydroecium 15 is formed between cation-exchange membrane 10 and anion-exchange membrane 11, between the cation-exchange membrane 10 and negative electrode 1 of end, form the first pole hydroecium 16, between the cation-exchange membrane 10 and anode 3 of the other end, form the second pole hydroecium 19.
Described former water inlet pipeline 4 is communicated with the bottom of all first hydroeciums 12; Sodium chloride water influent pipeline 5 is communicated with the bottom of all 3rd hydroeciums 14; The top of all first hydroeciums 12 is all communicated with fresh water outlet pipeline 6; The top of all 3rd hydroeciums 14 is all communicated with sodium chloride solution reclaim line 7; All dense with first water lines 8 in top of all second hydroeciums 13 is communicated with; All dense with second water lines 9 in top of all 4th hydroeciums 15 is communicated with.
Waste liquid reprocessing retracting device 17 comprises sewage sludge storage pond 23 and sludge dewatering pond 22, the bottom in sewage sludge storage pond 23 is communicated with sludge dewatering pond 22 by pipeline, first dense water lines 8 is all communicated with the top in sewage sludge storage pond 23 with the second dense water lines 9, sludge dewatering pond 22 is provided with Discharge line for solids road 21 and filtrate recycle pipeline 20, can get back to the former water water inlet pipe 4 of this device after suitable process, the top in sewage sludge storage pond 23 is communicated with filtrate recycle pipeline 20 by connecting line.
Operation principle of the present invention: former water enters the first hydroecium 12 of each film unit 1 by former water inlet pipeline 4, sodium chloride solution enters the 3rd hydroecium 14 of each film unit 1 by sodium chloride water influent pipeline 5, under the effect of DC electric field, the cation (Na in the first hydroecium 12
+k
+ca
2+mg
2+deng) and the 3rd hydroecium 14 in Cl
-directional migration forms chlorine concentrated water drainage to the 4th hydroecium 15 and goes out.Anion (Cl in first hydroecium 12
-hCO
3-sO
4 2-deng) and the 3rd hydroecium 14 in Na
+form sodium concentrated water drainage in directional migration to the second hydroecium 13 to go out.
The dense water that second hydroecium 13 and the 4th hydroecium 15 are discharged respectively is to sludge storage pool 23, after sludge dewatering pond 22 processes, Separation of Solid and Liquid, the supernatant of sludge storage pool 23 and the main component of dewaterer filtrate are NaCl, can reuse as electrodialytic former water, (the easily inorganic salt crust of precipitation, main component is CaSO to solid
4, MgSO
4, CaCO
3deng) carry out outward transport disposal.
Claims (4)
1. a salt adding electrodialysis plant, comprise negative electrode (1), film unit (2) and anode (3), it is characterized in that: negative electrode (1), the film unit (2) that parallel connection is superimposed and anode (3) arrange in turn and are fixed together, the bottom of film unit (2) is provided with former water inlet pipeline (4) and sodium chloride water influent pipeline (5), the top of film unit (2) is provided with fresh water outlet pipeline (6), sodium chloride solution reclaim line (7), first dense water lines (8) and the second dense water lines (9), first dense water lines (8) is all connected with waste liquid reprocessing retracting device (17) with the second dense water lines (9).
2. a kind of salt adding electrodialysis plant according to claim 1, it is characterized in that: described film unit (2) comprises 3 cation-exchange membranes (10), 2 anion-exchange membranes (11) and 5 dividing plates (18), cation-exchange membrane (10) and anion-exchange membrane (11) are disposed alternately on 5 dividing plates (18), the first hydroecium (12) is formed between cation-exchange membrane (10) and anion-exchange membrane (11), second hydroecium (13), 3rd hydroecium (14) and the 4th hydroecium (15), be positioned between the cation-exchange membrane (10) of end and negative electrode (1) and form the first pole hydroecium (16), be positioned between the cation-exchange membrane (10) of the other end and anode (3) and form the second pole hydroecium (19).
3. a kind of salt adding electrodialysis plant according to claim 2, is characterized in that: described former water inlet pipeline (4) is communicated with the bottom of all first hydroeciums (12); Sodium chloride water influent pipeline (5) is communicated with the bottom of all 3rd hydroeciums (14); The top of all first hydroeciums (12) is all communicated with fresh water outlet pipeline (6); The top of all 3rd hydroeciums (14) is all communicated with sodium chloride solution reclaim line (7); All dense with first water lines (8) in top of all second hydroeciums (13) is communicated with; All dense with second water lines (9) in top of all 4th hydroeciums (15) is communicated with.
4. a kind of salt adding electrodialysis plant according to claim 1 or 2 or 3, it is characterized in that: waste liquid reprocessing retracting device (17) comprises sewage sludge storage pond (23) and sludge dewatering pond (22), the bottom in sewage sludge storage pond (23) is communicated with sludge dewatering pond (22) by pipeline, first dense water lines (8) is all communicated with the top of sewage sludge storage pond (23) with the second dense water lines (9), sludge dewatering pond (22) is provided with Discharge line for solids road (21) and filtrate recycle pipeline (20), the former water water inlet pipe (4) of this device can be got back to after suitable process, the top in sewage sludge storage pond (23) is communicated with filtrate recycle pipeline (20) by connecting line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209381.9A CN104815556B (en) | 2015-04-28 | 2015-04-28 | One kind plus salt electrodialysis plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209381.9A CN104815556B (en) | 2015-04-28 | 2015-04-28 | One kind plus salt electrodialysis plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104815556A true CN104815556A (en) | 2015-08-05 |
| CN104815556B CN104815556B (en) | 2017-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510209381.9A Active CN104815556B (en) | 2015-04-28 | 2015-04-28 | One kind plus salt electrodialysis plant |
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| Country | Link |
|---|---|
| CN (1) | CN104815556B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550802A (en) * | 2019-08-28 | 2019-12-10 | 深圳市南科环保科技有限公司 | High-salinity aqueous solution zero-emission treatment system and method |
| CN113292188A (en) * | 2021-03-17 | 2021-08-24 | 华电水务工程有限公司 | Non-softening concentrated high-salinity wastewater treatment process based on precipitated salt recovery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000176457A (en) * | 1998-12-18 | 2000-06-27 | Hitachi Ltd | Waste water treatment device in semiconductor production plant |
| JP2013063372A (en) * | 2011-09-15 | 2013-04-11 | Toshiba Corp | Desalination system |
| CN103420459A (en) * | 2013-05-22 | 2013-12-04 | 上海理工大学 | Hybrid membrane desalination processing device and equipment, and desalination method |
| CN104016529A (en) * | 2014-06-05 | 2014-09-03 | 中国科学院过程工程研究所 | Multi-stage countercurrent electrodialyzer reversal-based method for treating saline wastewater in coal chemical industry |
| CN204672145U (en) * | 2015-04-28 | 2015-09-30 | 中国华电工程(集团)有限公司 | A kind of salt adding electrodialysis plant |
-
2015
- 2015-04-28 CN CN201510209381.9A patent/CN104815556B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000176457A (en) * | 1998-12-18 | 2000-06-27 | Hitachi Ltd | Waste water treatment device in semiconductor production plant |
| JP2013063372A (en) * | 2011-09-15 | 2013-04-11 | Toshiba Corp | Desalination system |
| CN103420459A (en) * | 2013-05-22 | 2013-12-04 | 上海理工大学 | Hybrid membrane desalination processing device and equipment, and desalination method |
| CN104016529A (en) * | 2014-06-05 | 2014-09-03 | 中国科学院过程工程研究所 | Multi-stage countercurrent electrodialyzer reversal-based method for treating saline wastewater in coal chemical industry |
| CN204672145U (en) * | 2015-04-28 | 2015-09-30 | 中国华电工程(集团)有限公司 | A kind of salt adding electrodialysis plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110550802A (en) * | 2019-08-28 | 2019-12-10 | 深圳市南科环保科技有限公司 | High-salinity aqueous solution zero-emission treatment system and method |
| CN113292188A (en) * | 2021-03-17 | 2021-08-24 | 华电水务工程有限公司 | Non-softening concentrated high-salinity wastewater treatment process based on precipitated salt recovery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104815556B (en) | 2017-11-24 |
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