GB854095A - Method of electrodialyzing aqueous solutions - Google Patents
Method of electrodialyzing aqueous solutionsInfo
- Publication number
- GB854095A GB854095A GB4064258A GB4064258A GB854095A GB 854095 A GB854095 A GB 854095A GB 4064258 A GB4064258 A GB 4064258A GB 4064258 A GB4064258 A GB 4064258A GB 854095 A GB854095 A GB 854095A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chambers
- concentrating
- liquids
- diluting
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007864 aqueous solution Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 abstract 10
- 238000007865 diluting Methods 0.000 abstract 5
- 239000012528 membrane Substances 0.000 abstract 5
- 125000000129 anionic group Chemical group 0.000 abstract 2
- 238000000909 electrodialysis Methods 0.000 abstract 2
- 239000003792 electrolyte Substances 0.000 abstract 2
- 239000013535 sea water Substances 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 150000001450 anions Chemical class 0.000 abstract 1
- 125000002091 cationic group Chemical group 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 abstract 1
- 235000013379 molasses Nutrition 0.000 abstract 1
- 239000012266 salt solution Substances 0.000 abstract 1
- 239000008399 tap water Substances 0.000 abstract 1
- 235000020679 tap water Nutrition 0.000 abstract 1
- 239000003643 water by type Substances 0.000 abstract 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
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
-
- 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
- B01D61/52—Accessories; Auxiliary operation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4611—Fluid flow
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/46115—Electrolytic cell with membranes or diaphragms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/4612—Controlling or monitoring
- C02F2201/46125—Electrical variables
- C02F2201/4613—Inversing polarity
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
854,095. Electro-dialysis of aqueous liquids. IONICS Inc. Dec. 17, 1958, No. 40642/58. Class 41 In the electro-dialysis of liquids the liquid is passed through a series of diluting chambers alternating with concentrating chambers provided with cationic and anionic permselective membranes, the end chambers of each series only being provided with electrodes, the current is periodically reversed, and the flow of diluting and concentrating liquids interchanged, whereby the membranes are prevented from fouling and clogging particularly the anionic membrane. Brackish waters, sea water, and sugar solutions and similar liquids containing relatively minor amounts of electrolytes, are treated. A suitable apparatus comprises a dimineratiser unit 20 Fig. 2 comprising a stack of chambers bounded by anion permeable membranes A and cation membranes C, with electrode chambers E 1 E 2 at each end. The anode and cathode feeds (which may be tap water or a suitable electrolyte) concentrating and feed liquids and the effluents, are fed through valves Va...Vh to pumps P1...P4, tanks T1...T4, through switch valves V 1 ...V 16 connected to the stack of chambers. Each tank has two pairs of valves. As shown, chambers 1 are diluting, 2 are concentrating, chambers 3 and 4 contain anolyte and catholyte. On reversing the switches S1...S4, the concentrating and diluting chambers are interchanged, by reversing the flow of liquids, and similarly the anode chamber becomes the cathode. In examples using 150 diluting and concentrating chambers, the salinity of sea water was reduced from 35,000 ppm. to 500 ppm with an output of 1000 gals. per day. After 3 weeks the current had fallen from 30 amps to 15 amps; and output fell to 500 gals. per day when current and liquid flows were reversed the original rates were restored. In the treatment of sugar or molasses solution a little acid is added to adjust pH value to 3À5, and dilute salt solution is used as concentrating liquid. Reversal of current and liquid flow is effected at periods of 12 to 24 hours. Specifications 720,002, 772,862, 821,229 and U.S.A. Specification 2,848,403 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4064258A GB854095A (en) | 1958-12-17 | 1958-12-17 | Method of electrodialyzing aqueous solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4064258A GB854095A (en) | 1958-12-17 | 1958-12-17 | Method of electrodialyzing aqueous solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB854095A true GB854095A (en) | 1960-11-16 |
Family
ID=10415907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4064258A Expired GB854095A (en) | 1958-12-17 | 1958-12-17 | Method of electrodialyzing aqueous solutions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB854095A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988007406A1 (en) * | 1987-04-03 | 1988-10-06 | Gradient Pty. Ltd. | Improvements relating to separation of charged molecules |
| EP1044717A2 (en) * | 1994-05-20 | 2000-10-18 | US Filter/ Ionpure, Inc | Polarity reversal and double reversal electrodeionization apparatus and method |
| WO2016133396A1 (en) * | 2015-02-20 | 2016-08-25 | Redstack B.V. | Method for fouling reduction in membrane based fluid-flow processes, and device capable of performing such method |
| CN110436586A (en) * | 2019-08-09 | 2019-11-12 | 南开大学 | A kind of process units and method of high purity water |
-
1958
- 1958-12-17 GB GB4064258A patent/GB854095A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988007406A1 (en) * | 1987-04-03 | 1988-10-06 | Gradient Pty. Ltd. | Improvements relating to separation of charged molecules |
| AU601040B2 (en) * | 1987-04-03 | 1990-08-30 | Life Therapeutics Limited | Improvements relating to separation of charged molecules |
| US5039386A (en) * | 1987-04-03 | 1991-08-13 | Gradient Pty. | Electrophoretic method for preparative separation of charged molecules in liquids |
| EP1044717A2 (en) * | 1994-05-20 | 2000-10-18 | US Filter/ Ionpure, Inc | Polarity reversal and double reversal electrodeionization apparatus and method |
| EP1044717A3 (en) * | 1994-05-20 | 2001-03-07 | US Filter/ Ionpure, Inc | Polarity reversal and double reversal electrodeionization apparatus and method |
| WO2016133396A1 (en) * | 2015-02-20 | 2016-08-25 | Redstack B.V. | Method for fouling reduction in membrane based fluid-flow processes, and device capable of performing such method |
| NL2014329B1 (en) * | 2015-02-20 | 2016-10-13 | Redstack Bv | Method for fouling reduction in membrane based fluid-flow processes, and device capable of performing such method. |
| CN110436586A (en) * | 2019-08-09 | 2019-11-12 | 南开大学 | A kind of process units and method of high purity water |
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