CN101746846A - Novel electric deionization pure water device - Google Patents
Novel electric deionization pure water device Download PDFInfo
- Publication number
- CN101746846A CN101746846A CN200810239568A CN200810239568A CN101746846A CN 101746846 A CN101746846 A CN 101746846A CN 200810239568 A CN200810239568 A CN 200810239568A CN 200810239568 A CN200810239568 A CN 200810239568A CN 101746846 A CN101746846 A CN 101746846A
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- pure water
- electric deionization
- deionization pure
- water device
- water
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Abstract
The invention discloses a novel electric deionization pure water device, which is characterized in that cation exchanging resin is filled on the upper part inside a fresh water chamber of the electric deionization pure water device, the height of a resin layer of the cation exchanging resin accounts for 5 to 35 percent of that of the entire resin layer, and anion-cation mixing resin is filled on the lower part inside the fresh water chamber. The novel electric deionization pure water device can reduce the requirement on the inlet water of the electric deionization pure water device, so the hardness of the inlet water of the electric deionization pure water device can be widened to 1 to 20 mg/L (calculated at CaCO3), and the scaling phenomenon is avoided. The novel electric deionization pure water device not only has the advantages that the acid alkali reclaiming method is free from being used, the quality of the produced water is good, the device can run continuously, no spare part is provided, operation is free from being attended, the automation degree is high, but also has the advantages that the membrane stack resistance is reduced, the quality of the produced water is improved, the service life of the device is prolonged and the like. The high requirement on the membrane stack inlet water is reduced, and the application range of the electric deionization pure water device is enlarged.
Description
Technical field
The present invention relates to pure water, particularly high purity water prepares the electric deionizer of usefulness.
Background technology
Electrodeionization (electrodeionization, be called for short EDI) pure water technology is a kind of separating desalination process that electrodialysis and ion-exchange are organically combined mutually, belongs to high-tech environmental protection category.Electrodeionization prepares pure water device and is by the positive pole that lays respectively at two ends, negative pole and anion-exchange membrane, the freshwater room that is filled with ion exchange resin, cationic exchange membrane, is filled with the dense hydroecium of ion exchange resin and alternately arranges and constitute, and this device clamps by bolting.Electric deionization pure water device has had multinomial improvement through years of development, and its performance is stable day by day.But the requirement of the water inlet standard of electric deionization pure water device is also very strict, its water inlet hardness (CaCO
3Meter) is generally less than＜0.5mg/L.
Because Chinese region is wide, water quality in all parts of the country is widely different, northerly some area, phreatic hardness is very high, even use first-stage reverse osmosis to handle, often can't make the hardness of its effluent quality, reach the requirement of electric deionization pure water device influent quality.This brings very big influence can for the normal operation of electric deionization pure water device.Because three kinds of different reactions are taking place in the electric deionization pure water device operational process simultaneously, promptly be respectively ion exchange reaction, electromigration reaction and electric regeneration of ion exchange resin reaction.Particularly in ion-exchange electricity regenerative response process, water is dissociated into H under effect of electric field
+And OH
-The Ca that is not gone out as yet in the ion, they and water by migration
2+And Mg
2+In conjunction with, generate Ca (OH)
2, Mg (OH)
2Precipitation, meeting plug ion exchange membrane scale formation occurs in membrane stack inside, and this increases the operating voltage of electric deionization pure water device, electric current gradually, and effluent quality descends gradually, until not reaching standards for industrial water usage, causes membrane stack to be scrapped.So water treatment company uses the two-pass reverse osmosis device to handle in pretreatment technology or increases softening process usually, but this has increased the cost of engineering of water treatment greatly.
Purpose of design of the present invention is to make a kind of novel electric deionization pure water device, the hardness of the influent quality that it can be allowed is higher, this electric deionization pure water device removes has general electric deionization pure water device without acid-alkali regeneration, the rate of recovery height of water, operation continuously outside the characteristics that equipment is used and automatization level is high, does not also have the water inlet standard low, the desalination ability is strong, advantages such as long service life.
Summary of the invention
The invention provides a kind of novel electric deionization pure water device, this device has that into the water requirement is low, and the desalination ability is strong, advantages such as long service life.
Technical scheme of the present invention is to be filled with positive resin on electric deionization pure water device freshwater room top, the filling floor height of Zeo-karb is 5%～35% of the whole yin and yang resin packing layer of a freshwater room height overall, and the main effect of this sun resin layer is the calcium ions and magnesium ions that removes in anhydrating.When the feed water by reverse osmosis water hardness is 1～20mg/L, adopt this measure hardness ions fully can be removed, and can not make hardness ions penetrate cation exchange resin layer, and enter in the zwitterion hybrid resin layer of lower floor, influence the electric deionizer effluent quality.
The water (flow) direction of electric deionizer freshwater room and dense hydroecium is opposite simultaneously, is counter-flow arrangement.The calcium ions and magnesium ions that removes can be derived membrane stack timely like this, prevent calcium ions and magnesium ions, the membrane stack scale formation takes place in the membrane stack accumulated inside.
Description of drawings
Accompanying drawing 1 is the structure iron of electric deionization pure water device.
Accompanying drawing 2 is the synoptic diagram of electric deionization pure water device.
Wherein,
1-first member plate 2-positive electrode dividing plate
3-positive electrode 4-positive electrode chamber
5-anion-exchange membrane 6-Zeo-karb
7-freshwater room hollow shelf 8-cationic exchange membrane
The dense hydroecium hollow shelf of 9-10-right end plate
11-negative potential dividing plate 12-negative potential
13-negative potential chamber 14-bolt
15-negative and positive mixture iron exchange resin 16-utmost point hydroecium
The dense hydroecium of 17-freshwater room 18-
Below in conjunction with accompanying drawing, describe preferred forms of the present invention and example in detail:
Embodiment
The present invention is shown in Fig. 2 electric deionization pure water device synoptic diagram, and it is by with positive electrode 3, negative potential 12, utmost point hydroecium 3, and anion-exchange membrane 5, dense hydroecium 17, cationic exchange membrane 8, freshwater room 18, alternate combinations form.
Embodiment is shown in Fig. 1 electric deionization pure water device structure iron, and it includes parts such as first member plate 1, positive electrode dividing plate 2, positive electrode 3, positive electrode chamber 4, anion-exchange membrane 5, Zeo-karb 6, freshwater room hollow shelf 7, cationic exchange membrane 8, dense hydroecium hollow shelf 9, right end plate 10, negative potential dividing plate 11, negative potential 12, negative potential chamber 13, bolt 14, negative and positive mixture iron exchange resin 15 and constitutes.Deep or light hydroecium dividing plate is a rectangle structure, and full load has Zeo-karb 8 in the dense hydroecium 17, can increase the conductive capability of membrane stack, and freshwater room 6 tops are filled with Zeo-karb, under-filled mixing anion and cation exchange resin thing 15.When hardness (with CaCO
3Meter) after the water that reaches 1～20mg/L enters electric deionization pure water device, the Ca in the water
2+, Mg
2+Ion is held back by the Zeo-karb on freshwater room top, under effect of electric field, moves to dense hydroecium, along with dense water current migration membrane out-pile; After other ion passes cation exchange resin layer, by the anion-cation exchange resin mixture institute " seizure " of freshwater room bottom, ion exchange reaction takes place, resin was lost efficacy, these ions are also moved to dense hydroecium under effect of electric field simultaneously; The electric regenerative response of ion exchange resin is also taking place in the ion exchange resin that lost efficacy under electric field action, these three reactions are carried out simultaneously, occur on the different resin layer of freshwater room resin compound.When opposite, be counter-flow arrangement by the water (flow) direction of the freshwater room of the positively charged ion electric deionization pure water device in the freshwater room and dense hydroecium.Such benefit is to help freshwater room top is migrated to Ca in the dense hydroecium
2+, Mg
2+Ion, the flow process in membrane stack shortens, and can flow out membrane stack fast timely, can not fouling in membrane stack.
This novel electric deionization pure water device, the hardness of the influent quality that it can be allowed is higher, remove and general electric deionization pure water device is arranged without acid-alkali regeneration, the rate of recovery height of water, operation continuously outside the characteristics that equipment is used and automatization level is high, does not also have the water inlet standard low, the desalination ability is strong, advantages such as long service life.
Embodiment
In the present embodiment, electric deionization pure water device adopts one-level one segment structure, the dividing plate height 500mm of freshwater room, width 100mm, thickness 6mm, the height and the width of the specification of dense hydroecium dividing plate thereafter and freshwater room identical, but thickness is 3mm, be filled with Zeo-karb in the dense hydroecium, be beneficial to conduction.Be filled with Zeo-karb on freshwater room top, the filling ratio is 20% of an all resins floor height, can decide according to the water quality situation, and under-filled have an anion-cation exchange resin mixture.The volume ratio of positive and negative resin is 1: 1, and electric deionization pure water device can obtain good water quality.
Claims (3)
1. the electric deionization pure water device that novel preparation high purity water is used is characterized in that in freshwater room, top filling male ion-exchange resin, the under-filled mixture that anion-cation exchange resin is arranged.
2. according to the described electric deionization pure water device of claim 1, it is characterized in that the height of top filling male ion-exchange resin layer accounts for 5%～35% of the whole potting resin layer of freshwater room total height.
3. according to the described electric deionization pure water device of claim 1, it is characterized in that the water (flow) direction of freshwater room and dense hydroecium is opposite, be counter-flow arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810239568A CN101746846A (en) | 2008-12-15 | 2008-12-15 | Novel electric deionization pure water device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810239568A CN101746846A (en) | 2008-12-15 | 2008-12-15 | Novel electric deionization pure water device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101746846A true CN101746846A (en) | 2010-06-23 |
Family
ID=42474554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810239568A Pending CN101746846A (en) | 2008-12-15 | 2008-12-15 | Novel electric deionization pure water device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101746846A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708664A (en) * | 2012-09-29 | 2014-04-09 | 东莞日之泉蒸馏水有限公司 | Production device for preparing distilled water by ion exchange technology |
| CN103732545A (en) * | 2011-08-03 | 2014-04-16 | 3M创新有限公司 | Rechargeable electrochemical cells |
-
2008
- 2008-12-15 CN CN200810239568A patent/CN101746846A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103732545A (en) * | 2011-08-03 | 2014-04-16 | 3M创新有限公司 | Rechargeable electrochemical cells |
| CN103708664A (en) * | 2012-09-29 | 2014-04-09 | 东莞日之泉蒸馏水有限公司 | Production device for preparing distilled water by ion exchange technology |
| CN103708664B (en) * | 2012-09-29 | 2015-07-22 | 东莞日之泉蒸馏水有限公司 | Production device for preparing distilled water by ion exchange technology |
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Application publication date: 20100623 |