USRE40733E1 - Helical electrodeionization apparatus - Google Patents
Helical electrodeionization apparatus Download PDFInfo
- Publication number
- USRE40733E1 USRE40733E1 US10/359,060 US35906003A USRE40733E US RE40733 E1 USRE40733 E1 US RE40733E1 US 35906003 A US35906003 A US 35906003A US RE40733 E USRE40733 E US RE40733E
- Authority
- US
- United States
- Prior art keywords
- membrane
- exchange membrane
- membrane bag
- bag
- water
- 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 - Lifetime
Links
Images
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
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
-
- 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
-
- 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
- B01D61/463—Apparatus therefor comprising the membrane sequence AC or CA, where C is a cation exchange membrane
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J47/00—Ion-exchange processes in general; Apparatus therefor
- B01J47/02—Column or bed processes
- B01J47/06—Column or bed processes during which the ion-exchange material is subjected to a physical treatment, e.g. heat, electric current, irradiation or vibration
- B01J47/08—Column or bed processes during which the ion-exchange material is subjected to a physical treatment, e.g. heat, electric current, irradiation or vibration subjected to a direct electric current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/08—Flow guidance means within the module or the apparatus
- B01D2313/086—Meandering flow path over the membrane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/14—Specific spacers
- B01D2313/146—Specific spacers on the permeate side
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- 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
Definitions
- This invention relates to novel electrodeionization apparatus adapted to transfer ions in a liquid under the influence of an electrical field. More specifically, this invention relates to a helical electrodeionization apparatus adapted to purify aqueous liquids to effect the production of high purity water.
- the typical structure of above-mentioned electrodeionization module is like a stacked mechanical sheet type, namely ion exchange membrane, separating wall and electrodes are processed to form a rectangle, and packed in sequence, ion exchange resin is filled up, and then is pressed to form a whole with mechanical method. It is difficult to maintain and clean the apparatus, especially one has to take apart the assembly to fill or renew the ion exchange resin. In general it needs special resin like fibre shape resin; moreover the water gathering structure of depletion compartment is more complex to process and it is easy to bring about leaking in the inner part of concentration compartments and depletion compartments.
- the present invention provides a helical electrodeionization apparatus for producing highly purified water. It is a technical improvement to the above-mentioned stacked mechanical sheet type.
- the present invention has a simple structure. It is easy to process.
- the present invention has no special requirement for ion exchange resin. It is convenient to renew and supplement.
- the present invention allows solution stream to flow smoothly when it is used. It has less of pressure drop and no leaking in operation.
- This present invention provides an apparatus for producing highly purified water.
- the technical scheme to realize the present invention is the following:
- the apparatus includes anion exchange membrane and cation exchange membrane, central pipe, main component parts, outer crust and cover.
- the central pipe is a metal pipe to act as an electrode and also as water distributing and gathering pipe or water gathering pipe.
- the main component parts of said apparatus which has a helical cylinder structure, with the central pipe as the helical axis.
- One or more than one set(s) of rolled membrane bag(s) that are formed by positioning a net-separating wall between a pair cf anion exchange membrane and cation exchange membrane is rolled up to form the cylinder structure; then twin metal strip or metal wire is wound the outside of said cylinder structure to constitute a conductive crust, so that the conductive crust can be used as another electrode.
- the membrane bag(s) fits tightly to the central pipe along the axial direction so that the flow passage is communicating with the central pipe through the slotted aperture(s). Fill the ion exchange resin between the adjacent membrane bag(s) to form the flow passage for getting product water.
- the structure of the present invention is much simpler, and it is suited to multiple-device series operation. Besides, daily maintenance and renewal of the resin is also more convenient than prior art.
- FIG. 1 is a sectional schematic view of the general structure of the present invention
- FIG. 2 is a schematic view of the cross-sectional structure of the present invention.
- FIG. 3 is a schematic diagram of the structure of the flow unit I of the present invention.
- FIG. 4 is a schematic diagram of another different structure of the flow unit I of the present invention.
- the central pipe 11 is a metal pipe, for distributing and gathering water. It is blocked in the middle.
- the upper half part is water gathering pipe, in which side wall, water gathering aperture 17 is slotted.
- the lower half part is water distributing pipe, in which side wall, water distributing aperture 16 is slotted.
- Each set of water distributing and gathering apertures are slotted on the same axial line;
- the flow unit I 8 is an U-shape flow passage in a membrane bag structure (shown in FIG. 3 ): an anion exchange membrane 18 and a cation exchange membrane 19 build up a membrane bag. Three sides of said anion exchange membrane 18 and cation exchange membrane 19 are sealed by sealing edge 21 , the other side is opening.
- An insulated net-separating wall 20 is in the membrane bag, namely between of said anion exchange membrane 18 and cation exchange membrane 19 .
- a guide band 22 is positioned on the middle of said insulated net-separating wall 20 and kept fitting closely to the inner wall of the membrane bag to form the U-shape flow passage.
- the opening side of the membrane bag fits tightly to the central pipe 11 along the axial direction, meanwhile the two terminal of the U-shape flow passage is linked up with water distributing aperture 16 and water gathering aperture 17 , respectively.
- FIG. 2 shows a cylinder structure formed by four membrane bags.
- a conductive crust 6 is composed of metal strip or metal wire twined round the outside of said main component parts.
- the conductive crust 6 is used as an electrode.
- Ion exchange resin 23 is filled up between the adjacent membrane bags in the conductive outer crust 6 5 to form flow unit II 9 .
- the assembly mentioned above includes the main component parts of the present invention.
- the main component parts are assembled in outer crust 5 with shell covers 2 at two terminals, outlet 1 and feed water inlet 3 are positioned at cover 2 , inlet 15 and outlet 13 are positioned at the other cover 2 ′, anode 10 and cathode 14 which are linked up with conductive crust 6 and central pipe 11 respectively are positioned on the outer crust 5 .
- Insulated filler 7 is lined between outer crust 5 and conductive crust 6 .
- Water distributing board 4 and water gathering board 12 are lined between the shell covers 2 , 2 ′ and the cylinder structure; namely to construct the whole present invention.
- pretreated water influx via the feed water inlet 3 , through the flow unit II 9 , and de-ionized water efflux through the outlet 13 , that's the product water; concentrated water can be circulated, entering the apparatus from the inlet 15 , passing through the flow unit I 8 , and outgoing through the outlet 1 .
- one apparatus of this invention can produce 1 ⁇ 2 T namely 1000 ⁇ 2000 liters high purity water per hour, while deionization ratio at 95% ⁇ 99%, power 0.3 ⁇ 1.0 kw/h/T and utilization ratio of water 90% ⁇ 95%.
- the conductivity of fed water is 10 ⁇ s/cm
- Said apparatus of this invention is suitable to process the pretreated water, such as the conductivity of water being lower than 500 ⁇ s/cm, especially lower than 100 ⁇ s/cm.
- Said apparatus of this invention has exchangeability, namely you can change the fed water inlet for the product water outlet to meet your needs.
- Said apparatus of this invention can be used in series, one stage or multi-stage.
- FIG. 4 presents another different structure of the flow unit I of the present invention.
- the flow unit I 8 may also be designed to become another structure: an anion exchange membrane 18 and a cation exchange membrane 19 build up a membrane bag.
- An insulated net-separating wall 20 is in the membrane bag, namely between of said anion exchange membrane 18 and cation exchange membrane 19 .
- Two sides of said anion exchange membrane 18 and cation exchange membrane 19 are sealed by sealing edge 21 ; the third side is opening, whole or partial, as the entrance of concentrated water; the last side of the membrane bag fits tightly to the central pipe 11 along the axial direction, so that the flow unit I linked with water gathering aperture 17 .
- the remaining structure is the same as mentioned above. Thus the structure is much simpler, but concentrated water cannot be used in circulation.
Abstract
Description
-
- 1—outlet
- 2,2′—cover
- 3—inlet
- 4—water distributing board
- 5—outer crust
- 6—conductive crust
- 7—insulated filler
- 8—flow unit I
- 9—flow unit II
- 10—anode
- 11—central pipe
- 12—water gathering board
- 13—outlet
- 14—cathode
- 15—inlet
- 16—water distributing aperture
- 17—water gathering aperture
- 18—anion exchange membrance
- 19—cation exchange membrance
- 20—insulated net-separating wall
- 21—sealing edge
- 22—guide band
TABLE 1 | ||||
Output | Utilization | |||
Feed water | Product water | capacity | Power | ratio of |
10 μm/cm | 0.1 μm/cm | 1500 L/h | 0.8 kw/h | >95% |
-
- i. The structure of the present invention is much simpler, water flows smoothly in each flow unit and meets with less pressure drop and needs less power, in particular, it is suited to multiple-device series operation;
- ii. It is not necessary to use expensive woven-type special ion exchange resin, but a general particle-type ion exchange resin can be used, and so production cost is lower;
- iii. Besides, daily maintenance and renewal of the resin is also more convenient than the prior art.
Claims (32)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/359,060 USRE40733E1 (en) | 1998-03-19 | 2003-02-05 | Helical electrodeionization apparatus |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 98223514 CN2327675Y (en) | 1998-03-19 | 1998-03-19 | Screw-roll style electric desalter |
CN 98225671 CN2359272Y (en) | 1998-11-17 | 1998-11-17 | Spiral roll type electric salt remover |
US09/266,995 US6190528B1 (en) | 1998-03-19 | 1999-03-12 | Helical electrodeionization apparatus |
US10/359,060 USRE40733E1 (en) | 1998-03-19 | 2003-02-05 | Helical electrodeionization apparatus |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/266,995 Reissue US6190528B1 (en) | 1998-03-19 | 1999-03-12 | Helical electrodeionization apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE40733E1 true USRE40733E1 (en) | 2009-06-16 |
Family
ID=25744893
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/266,995 Ceased US6190528B1 (en) | 1998-03-19 | 1999-03-12 | Helical electrodeionization apparatus |
US10/359,060 Expired - Lifetime USRE40733E1 (en) | 1998-03-19 | 2003-02-05 | Helical electrodeionization apparatus |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/266,995 Ceased US6190528B1 (en) | 1998-03-19 | 1999-03-12 | Helical electrodeionization apparatus |
Country Status (1)
Country | Link |
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US (2) | US6190528B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012170192A1 (en) | 2011-06-10 | 2012-12-13 | Dow Global Technologies Llc | Method of assembly of an electrodeionization device including ion exchange spacer |
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GB0016846D0 (en) * | 2000-07-10 | 2000-08-30 | United States Filter Corp | Electrodeionisation Apparatus |
US7147785B2 (en) * | 2000-09-28 | 2006-12-12 | Usfilter Corporation | Electrodeionization device and methods of use |
US6607647B2 (en) | 2001-04-25 | 2003-08-19 | United States Filter Corporation | Electrodeionization apparatus with expanded conductive mesh electrode and method |
US6649037B2 (en) | 2001-05-29 | 2003-11-18 | United States Filter Corporation | Electrodeionization apparatus and method |
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US7306709B2 (en) * | 2004-10-20 | 2007-12-11 | Ge Osmonics, Inc. | Spiral electrodeionization device with flow distribution profiling |
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US20060231406A1 (en) * | 2005-04-13 | 2006-10-19 | Usfilter Corporation | Regeneration of adsorption media within electrical purification apparatuses |
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Citations (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4225413A (en) | 1979-05-24 | 1980-09-30 | Karn William S | Spiral wound electrodialysis cell |
US4753681A (en) | 1986-09-30 | 1988-06-28 | Millipore Corporation | Method for defouling electrodeionization apparatus |
EP0384716A2 (en) | 1989-02-23 | 1990-08-29 | Koslow Technologies Corporation | Process for the production of materials and materials produced by the process |
US5259936A (en) | 1991-06-19 | 1993-11-09 | Millipore Corporation | Purified ion exchange resins and process |
US5292422A (en) | 1992-09-15 | 1994-03-08 | Ip Holding Company | Modules for electrodeionization apparatus |
US5308466A (en) | 1990-12-17 | 1994-05-03 | Ip Holding Company | Electrodeionization apparatus |
US5376253A (en) * | 1992-05-15 | 1994-12-27 | Christ Ag | Apparatus for the continuous electrochemical desalination of aqueous solutions |
US5425858A (en) | 1994-05-20 | 1995-06-20 | The Regents Of The University Of California | Method and apparatus for capacitive deionization, electrochemical purification, and regeneration of electrodes |
WO1997028889A1 (en) | 1996-02-09 | 1997-08-14 | Glegg Water Conditioning, Inc. | Modular apparatus for the demineralization of liquids |
WO1998011987A1 (en) | 1996-09-23 | 1998-03-26 | United States Filter Corporation | Electrodeionization apparatus and method |
WO1998020972A1 (en) | 1996-11-12 | 1998-05-22 | United States Filter Corporation | Electrodeionization apparatus and method |
US5925255A (en) | 1997-03-01 | 1999-07-20 | Mukhopadhyay; Debasish | Method and apparatus for high efficiency reverse osmosis operation |
WO1999050184A1 (en) | 1998-03-31 | 1999-10-07 | United States Filter Corporation | Water treatment system and process comprising ph-adjustment |
WO2000044477A1 (en) | 1999-01-29 | 2000-08-03 | United States Filter Corporation | Electrodeionization apparatus and method |
US6284117B1 (en) | 1999-12-22 | 2001-09-04 | Nanogen, Inc. | Apparatus and method for removing small molecules and ions from low volume biological samples |
US6309532B1 (en) | 1994-05-20 | 2001-10-30 | Regents Of The University Of California | Method and apparatus for capacitive deionization and electrochemical purification and regeneration of electrodes |
US6328896B1 (en) | 1998-04-24 | 2001-12-11 | United States Filter Corporation | Process for removing strong oxidizing agents from liquids |
WO2002014224A1 (en) | 2000-08-11 | 2002-02-21 | Ionics, Incorporated | Device and method for electrodialysis |
US6436264B1 (en) | 1997-10-21 | 2002-08-20 | Organo Corporation | Apparatus for electrically producing deionized water |
-
1999
- 1999-03-12 US US09/266,995 patent/US6190528B1/en not_active Ceased
-
2003
- 2003-02-05 US US10/359,060 patent/USRE40733E1/en not_active Expired - Lifetime
Patent Citations (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4225413A (en) | 1979-05-24 | 1980-09-30 | Karn William S | Spiral wound electrodialysis cell |
US4753681A (en) | 1986-09-30 | 1988-06-28 | Millipore Corporation | Method for defouling electrodeionization apparatus |
EP0384716A2 (en) | 1989-02-23 | 1990-08-29 | Koslow Technologies Corporation | Process for the production of materials and materials produced by the process |
US5147722A (en) | 1989-02-23 | 1992-09-15 | Koslow Technologies Corporation | Process for the production of materials and materials produced by the process |
US5308466A (en) | 1990-12-17 | 1994-05-03 | Ip Holding Company | Electrodeionization apparatus |
US5316637A (en) | 1990-12-17 | 1994-05-31 | Ip Holding Company | Electrodeionization apparatus |
US5259936A (en) | 1991-06-19 | 1993-11-09 | Millipore Corporation | Purified ion exchange resins and process |
US5376253A (en) * | 1992-05-15 | 1994-12-27 | Christ Ag | Apparatus for the continuous electrochemical desalination of aqueous solutions |
WO1994006548A1 (en) | 1992-09-15 | 1994-03-31 | Ionpure Technologies Corporation | Modules for electrodeionization apparatus |
US5292422A (en) | 1992-09-15 | 1994-03-08 | Ip Holding Company | Modules for electrodeionization apparatus |
EP0660747B1 (en) | 1992-09-15 | 1996-03-20 | U.S. FILTER/IONPURE Inc. | Modules for electrodeionization apparatus |
US5425858A (en) | 1994-05-20 | 1995-06-20 | The Regents Of The University Of California | Method and apparatus for capacitive deionization, electrochemical purification, and regeneration of electrodes |
WO1995032803A2 (en) | 1994-05-20 | 1995-12-07 | The Regents Of The University Of California | Method and apparatus for capacitive deionization and electrochemical purification and regeneration of electrodes |
US6309532B1 (en) | 1994-05-20 | 2001-10-30 | Regents Of The University Of California | Method and apparatus for capacitive deionization and electrochemical purification and regeneration of electrodes |
US5954937A (en) | 1994-05-20 | 1999-09-21 | The Regents Of The University Of California | Method and apparatus for capacitive deionization and electrochemical purification and regeneration of electrodes |
WO1997028889A1 (en) | 1996-02-09 | 1997-08-14 | Glegg Water Conditioning, Inc. | Modular apparatus for the demineralization of liquids |
US6193869B1 (en) | 1996-02-09 | 2001-02-27 | Glegg Water Conditioning, Inc. | Modular apparatus for the demineralization of liquids |
US5858191A (en) | 1996-09-23 | 1999-01-12 | United States Filter Corporation | Electrodeionization apparatus and method |
US5868915A (en) | 1996-09-23 | 1999-02-09 | United States Filter Corporation | Electrodeionization apparatus and method |
WO1998011987A1 (en) | 1996-09-23 | 1998-03-26 | United States Filter Corporation | Electrodeionization apparatus and method |
EP0892677B1 (en) | 1996-11-12 | 2001-11-28 | United States Filter Corporation | Electrodeionization apparatus and method |
WO1998020972A1 (en) | 1996-11-12 | 1998-05-22 | United States Filter Corporation | Electrodeionization apparatus and method |
US5925255A (en) | 1997-03-01 | 1999-07-20 | Mukhopadhyay; Debasish | Method and apparatus for high efficiency reverse osmosis operation |
US6436264B1 (en) | 1997-10-21 | 2002-08-20 | Organo Corporation | Apparatus for electrically producing deionized water |
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