CN111233096A - Mixed horizontal ion exchange water purification system and method and water purifier - Google Patents
Mixed horizontal ion exchange water purification system and method and water purifier Download PDFInfo
- Publication number
- CN111233096A CN111233096A CN202010183964.XA CN202010183964A CN111233096A CN 111233096 A CN111233096 A CN 111233096A CN 202010183964 A CN202010183964 A CN 202010183964A CN 111233096 A CN111233096 A CN 111233096A
- Authority
- CN
- China
- Prior art keywords
- water
- ion exchange
- ions
- exchange unit
- regeneration
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 535
- 238000005342 ion exchange Methods 0.000 title claims abstract description 277
- 238000000746 purification Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 65
- -1 hydrogen ions Chemical class 0.000 claims abstract description 283
- 230000008929 regeneration Effects 0.000 claims abstract description 205
- 238000011069 regeneration method Methods 0.000 claims abstract description 205
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 112
- 239000001257 hydrogen Substances 0.000 claims abstract description 112
- 238000005341 cation exchange Methods 0.000 claims abstract description 102
- 150000002500 ions Chemical class 0.000 claims abstract description 100
- 150000003839 salts Chemical class 0.000 claims abstract description 100
- 238000005349 anion exchange Methods 0.000 claims abstract description 56
- 238000010612 desalination reaction Methods 0.000 claims abstract description 49
- 230000008569 process Effects 0.000 claims abstract description 48
- 238000011033 desalting Methods 0.000 claims abstract description 28
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 61
- 239000003729 cation exchange resin Substances 0.000 claims description 61
- 239000003957 anion exchange resin Substances 0.000 claims description 57
- 239000003011 anion exchange membrane Substances 0.000 claims description 46
- 239000012528 membrane Substances 0.000 claims description 46
- 239000011347 resin Substances 0.000 claims description 23
- 229920005989 resin Polymers 0.000 claims description 23
- 238000005868 electrolysis reaction Methods 0.000 claims description 21
- 230000009471 action Effects 0.000 claims description 14
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 10
- 239000002351 wastewater Substances 0.000 abstract description 10
- 230000007774 longterm Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 8
- 230000002441 reversible effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003014 ion exchange membrane Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/30—Electrical regeneration
-
- 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
- C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
-
- 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
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- 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
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A mixed horizontal ion exchange water purification system, method and water purifier, the water purifier carries on the desalination and water purification through the mixed horizontal ion exchange water purification system, the water purification system has horizontal ion exchange unit and mixed ion exchange unit, the raw water passes horizontal ion exchange regeneration unit, mixed ion exchange unit sequentially, discharge with the pure water; the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are vertical to the water flow direction under the desalting working condition, raw water can be subjected to multiple filtration through the transverse ion exchange unit and the mixed ion exchange unit, no wastewater is generated in the desalting process, the water quality of pure water can be further improved, hydrogen ions and hydroxyl ions can be reversely electrolyzed, salt positive ions and salt negative ions in the water purification system after long-term desalting are replaced, the utilization rate of the water purification system is improved, and the service life of the water purifier is prolonged.
Description
Technical Field
The invention relates to the technical field of water purifiers, in particular to a mixed horizontal ion exchange water purification system and method and a water purifier.
Background
Most of the existing ion exchange water purifiers adopt combined filter elements which are separately processed by anions and cations to purify water, the anions and the cations are separated by ion exchange membranes, single-group filter elements cannot meet the requirement of water with large flux, if a plurality of combined filter elements are arranged to purify the tap water, not only the occupied space is large, but also a plurality of groups of ion exchange membranes are required to be arranged to carry out ion exchange, the use cost is high, in the existing ion exchange water purifiers, the combined filter elements for ion exchange need to be replaced after working for a certain time to maintain the normal water purification performance of the water purifiers, and the replacement cost is high.
Therefore, it is necessary to provide a hybrid horizontal ion exchange water purification system, method and water purifier to overcome the deficiencies of the prior art.
Disclosure of Invention
One of the objectives of the present invention is to provide a hybrid horizontal ion exchange water purification system, which can perform multiple filtration desalination on raw water, does not generate wastewater during desalination, can further improve the quality of pure water, and can reverse electrolyze hydrogen ions and hydroxyl ions to replace salt positive ions and salt negative ions in the water purification system after long-term desalination, thereby improving the utilization rate of the water purification system and reducing the replacement frequency of the water purification system.
The above object of the present invention is achieved by the following technical measures.
Providing a mixed horizontal ion exchange water purification system, which is provided with a horizontal ion exchange unit and a mixed ion exchange unit, wherein raw water passes through the horizontal ion exchange regeneration unit and the mixed ion exchange unit in sequence and then is discharged as pure water; the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are vertical relative to the water flow direction under the desalting working condition.
Preferably, the horizontal ion exchange unit is installed in a water passage at a front stage of the hybrid ion exchange unit, and pure water of the horizontal ion exchange unit is used as raw water of the hybrid ion exchange unit.
Preferably, the horizontal ion exchange unit is installed in a water path at a rear stage of the hybrid ion exchange unit, and pure water of the hybrid ion exchange unit is used as raw water of the horizontal ion exchange unit.
Preferably, the cation exchange unit layer and the anion exchange unit layer of the horizontal ion exchange unit are sandwiched between the first cation exchange membrane and the first anion exchange membrane.
Preferably, the regeneration water path of the transverse ion exchange unit includes a first regeneration water path and a second regeneration water path, the first anion exchange membrane constitutes a partial structure of the first regeneration water path, the first cation exchange membrane constitutes a partial structure of the second regeneration water path, and the regeneration water passes through the first regeneration water path and the second regeneration water path in this order and is discharged as concentrated water.
Preferably, the horizontal ion exchange unit includes a first positive electrode plate and a first negative electrode plate for electrolyzing water, the first positive electrode plate is disposed on a side of the first regeneration water path away from the first anion exchange membrane, and the first negative electrode plate is mounted on a side of the second regeneration water path away from the first cation exchange membrane.
Preferably, the cation exchange unit layer is provided as a cation exchange resin.
Preferably, the cation exchange resin is one of a strongly acidic cation exchange resin and a weakly acidic cation exchange resin, or a combination of both.
Preferably, the anion exchange unit layer is provided as an anion exchange resin.
Preferably, the anion exchange resin is one of a strongly basic anion exchange resin or a weakly basic anion exchange resin, or a combination of the two.
Preferably, the mixed ion exchange unit is provided with a mixed resin unit, and the mixed resin unit is interposed between the second cation exchange membrane and the second anion exchange membrane.
Preferably, the mixed resin unit is formed by mixing a cation exchange resin and an anion exchange resin.
Preferably, the regeneration water path of the hybrid ion exchange unit includes a third regeneration water path and a fourth regeneration water path, the second anion exchange membrane constitutes a part of the third regeneration water path, the second cation exchange membrane constitutes a part of the fourth regeneration water path, and the regeneration water passes through the third regeneration water path and the fourth regeneration water path in this order and is discharged as pure water.
Preferably, the hybrid ion exchange unit further includes a second positive electrode plate and a second negative electrode plate for electrolyzing water, the second positive electrode plate being disposed on a side of the third regeneration water path remote from the second anion exchange membrane, and the second negative electrode plate being disposed on a side of the fourth regeneration water path remote from the second cation exchange membrane.
In the desalting process of the horizontal ion exchange unit, the regeneration water path of the horizontal ion exchange unit is closed, no electrolytic voltage is applied, and raw water passes through the cation exchange unit layer and the anion exchange unit layer of the horizontal ion exchange unit in sequence and is discharged as pure water.
Specifically, in the cation exchange unit layer, positive salt ions to be desalted in raw water are replaced by hydrogen ions in the cation exchange unit layer, the positive salt ions are adsorbed by the cation exchange unit layer, the hydrogen ions are replaced, the replaced hydrogen ions enter the next layer of anion exchange unit layer along with the raw water, negative salt ions in the raw water are replaced by hydroxyl ions in the anion exchange unit layer, the negative salt ions are adsorbed by the anion exchange unit layer, the hydroxyl ions are replaced, the hydroxyl ions and the hydrogen ions react to generate water, the water is discharged in the form of pure water, and the pure water of the transverse type ion exchange unit is used as the raw water of the mixed type ion exchange unit.
In the desalting process of the mixed ion exchange unit, hydrogen ions in the cation exchange resin of the mixed ion exchange unit displace undesalted salt positive ions, the salt positive ions are adsorbed by the cation exchange resin, and the hydrogen ions are displaced; the hydroxide ions in the anion exchange resin of the mixed type ion exchange unit displace the undesalted salt negative ions, the salt negative ions are absorbed by the anion exchange resin, and the hydroxide ions are displaced; the displaced hydrogen ions and hydroxide ions react to produce water, which is discharged as pure water.
In the regeneration process of the transverse ion exchange unit, the desalination water channel of the transverse ion exchange unit is closed, electrolysis voltage is applied, and the regenerated water enters from the first regenerated water channel and is discharged from the second regenerated water channel;
specifically, under the condition of applying an electrolytic voltage, water generated by combining hydrogen ions and hydroxyl ions between a cation exchange unit layer and an anion exchange unit layer of the transverse ion exchange unit is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydroxyl ions move towards the first positive plate, salt negative ions in the anion exchange resin are replaced in the process of the hydroxyl ion movement, and the replaced salt negative ions penetrate through the first anion exchange membrane and enter the first regeneration water path under the electric attraction of the first positive plate.
Meanwhile, hydrogen ions move towards the first negative plate, positive salt ions in the cation exchange resin are replaced in the hydrogen ion moving process, and the replaced positive salt ions penetrate through the cation exchange membrane and enter the second regeneration water path under the electric attraction of the first negative plate.
In the second regeneration water path, the replaced positive salt ions and the replaced negative salt ions are combined, and finally the salt ions are discharged from the second regeneration water path in the form of concentrated water.
During regeneration of the hybrid ion exchange unit, the desalination water circuit of the hybrid ion exchange unit is closed. When the electrolytic voltage is applied, the regenerated water enters the third regeneration water path and is discharged from the fourth regeneration water path.
Specifically, under the condition of applying an electrolytic voltage, water generated by hydrogen ions and hydroxyl ions floating in the hybrid ion exchange unit in the desalination process is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydrogen ions move towards the second positive plate, in the process of moving the hydroxyl ions, salt negative ions adsorbed in the anion exchange resin of the hybrid ion exchange unit are replaced, and under the electric attraction of the second positive plate, the replaced salt negative ions pass through the second anion exchange membrane and enter the third regeneration water path.
Meanwhile, hydrogen ions move towards the second negative electrode, in the process of moving the hydrogen ions, positive salt ions in the cation exchange resin of the mixed resin unit are replaced, and under the electric attraction of the second negative electrode plate, the replaced positive salt ions penetrate through the third cation exchange membrane and enter the fourth regeneration water path.
In the third regeneration water path, the replaced salt positive ions and the salt negative ions are combined, and finally the salt positive ions and the salt negative ions are discharged from the fourth regeneration water path in the form of concentrated water.
The invention relates to a mixed horizontal ion exchange water purification system which is provided with a horizontal ion exchange unit and a mixed ion exchange unit, wherein raw water passes through the horizontal ion exchange regeneration unit and the mixed ion exchange unit in sequence and then is discharged as pure water; the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are vertical relative to the water flow direction under the desalting working condition. Can carry out multiple filtration to the raw water through horizontal type ion exchange unit and mixed type ion exchange unit, the desalination in-process does not produce waste water, can further improve the product water quality of pure water, can also reverse electrolysis hydrogen ion and hydroxyl ion, and the water purification system after will desalting for a long time in salt positive ion and salt negative ion replace, improve water purification system's utilization ratio, reduce water purification system's change frequency.
The invention also aims to provide a mixed horizontal ion exchange water purification method, which can perform desalination and water purification through a mixed horizontal ion exchange water purification system, can perform multiple filtration on raw water, does not generate wastewater in the desalination process, can further improve the water production quality of pure water, can also perform reverse electrolysis on hydrogen ions and hydroxyl ions, replaces salt positive ions and salt negative ions in the water purification system after long-term desalination, improves the utilization rate of the water purification system, and reduces the replacement frequency of the water purification system.
The above object of the present invention is achieved by the following technical measures.
Provides a mixed horizontal ion exchange water purification method, which carries out desalination and water purification through a mixed horizontal ion exchange water purification system.
In the desalting process of the horizontal ion exchange unit, the regeneration water path of the horizontal ion exchange unit is closed, no electrolytic voltage is applied, and raw water passes through the cation exchange unit layer and the anion exchange unit layer of the horizontal ion exchange unit in sequence and is discharged as pure water.
Specifically, in the cation exchange unit layer, positive salt ions to be desalted in raw water are replaced by hydrogen ions in the cation exchange unit layer, the positive salt ions are adsorbed by the cation exchange unit layer, the hydrogen ions are replaced, the replaced hydrogen ions enter the next layer of anion exchange unit layer along with the raw water, negative salt ions in the raw water are replaced by hydroxyl ions in the anion exchange unit layer, the negative salt ions are adsorbed by the anion exchange unit layer, the hydroxyl ions are replaced, the hydroxyl ions and the hydrogen ions react to generate water, the water is discharged in the form of pure water, and the pure water of the transverse type ion exchange unit is used as the raw water of the mixed type ion exchange unit.
In the desalting process of the mixed ion exchange unit, hydrogen ions in the cation exchange resin of the mixed ion exchange unit displace undesalted salt positive ions, the salt positive ions are adsorbed by the cation exchange resin, and the hydrogen ions are displaced; the hydroxide ions in the anion exchange resin of the mixed type ion exchange unit displace the undesalted salt negative ions, the salt negative ions are absorbed by the anion exchange resin, and the hydroxide ions are displaced; the displaced hydrogen ions and hydroxide ions react to produce water, which is discharged as pure water.
In the regeneration process of the transverse ion exchange unit, the desalination water channel of the transverse ion exchange unit is closed, electrolysis voltage is applied, and the regenerated water enters from the first regenerated water channel and is discharged from the second regenerated water channel;
specifically, under the condition of applying an electrolytic voltage, water generated by combining hydrogen ions and hydroxyl ions between a cation exchange unit layer and an anion exchange unit layer of the transverse ion exchange unit is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydroxyl ions move towards the first positive plate, salt negative ions in the anion exchange resin are replaced in the process of the hydroxyl ion movement, and the replaced salt negative ions penetrate through the first anion exchange membrane and enter the first regeneration water path under the electric attraction of the first positive plate.
Meanwhile, hydrogen ions move towards the first negative plate, positive salt ions in the cation exchange resin are replaced in the hydrogen ion moving process, and the replaced positive salt ions penetrate through the cation exchange membrane and enter the second regeneration water path under the electric attraction of the first negative plate.
In the second regeneration water path, the replaced positive salt ions and the replaced negative salt ions are combined, and finally the salt ions are discharged from the second regeneration water path in the form of concentrated water.
During regeneration of the hybrid ion exchange unit, the desalination water circuit of the hybrid ion exchange unit is closed. When the electrolytic voltage is applied, the regenerated water enters the third regeneration water path and is discharged from the fourth regeneration water path.
Specifically, under the condition of applying an electrolytic voltage, water generated by hydrogen ions and hydroxyl ions floating in the hybrid ion exchange unit in the desalination process is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydrogen ions move towards the second positive plate, in the process of moving the hydroxyl ions, salt negative ions adsorbed in the anion exchange resin of the hybrid ion exchange unit are replaced, and under the electric attraction of the second positive plate, the replaced salt negative ions pass through the second anion exchange membrane and enter the third regeneration water path.
Meanwhile, hydrogen ions move towards the second negative electrode, in the process of moving the hydrogen ions, positive salt ions in the cation exchange resin of the mixed resin unit are replaced, and under the electric attraction of the second negative electrode plate, the replaced positive salt ions penetrate through the third cation exchange membrane and enter the fourth regeneration water path.
In the third regeneration water path, the replaced salt positive ions and the salt negative ions are combined, and finally the salt positive ions and the salt negative ions are discharged from the fourth regeneration water path in the form of concentrated water.
According to the mixed horizontal ion exchange water purification method, desalination and water purification are performed through the mixed horizontal ion exchange water purification system, raw water can be subjected to multiple filtration, no wastewater is generated in the desalination process, the water production quality of the pure water can be further improved, hydrogen ions and hydroxyl ions can be electrolyzed reversely, salt positive ions and salt negative ions in the water purification system after long-term desalination are replaced, the utilization rate of the water purification system is improved, and the replacement frequency of the water purification system is reduced.
Another object of the present invention is to provide a water purifier having a hybrid horizontal ion exchange water purification system, which can perform desalination and purification of water, can perform multiple filtration of raw water, does not generate wastewater during desalination, can further improve the quality of pure water, and can perform reverse electrolysis of hydrogen ions and hydroxyl ions, thereby replacing salt positive ions and salt negative ions in the water purification system after long-term desalination, improving the utilization rate of the water purification system, and prolonging the service life of the water purifier.
The above object of the present invention is achieved by the following technical measures.
A water purifier is provided with a hybrid horizontal ion exchange water purification system, and desalination and purification are performed by using the water purification system.
The water purification system is provided with a horizontal ion exchange unit and a mixed ion exchange unit, and raw water is discharged as pure water after sequentially passing through the horizontal ion exchange regeneration unit and the mixed ion exchange unit; the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are vertical relative to the water flow direction under the desalting working condition.
Preferably, the horizontal ion exchange unit is installed in a water passage at a front stage of the hybrid ion exchange unit, and pure water of the horizontal ion exchange unit is used as raw water of the hybrid ion exchange unit.
Preferably, the horizontal ion exchange unit is installed in a water path at a rear stage of the hybrid ion exchange unit, and pure water of the hybrid ion exchange unit is used as raw water of the horizontal ion exchange unit.
Preferably, the cation exchange unit layer and the anion exchange unit layer of the horizontal ion exchange unit are sandwiched between the first cation exchange membrane and the first anion exchange membrane.
Preferably, the regeneration water path of the transverse ion exchange unit includes a first regeneration water path and a second regeneration water path, the first anion exchange membrane constitutes a partial structure of the first regeneration water path, the first cation exchange membrane constitutes a partial structure of the second regeneration water path, and the regeneration water passes through the first regeneration water path and the second regeneration water path in this order and is discharged as concentrated water.
Preferably, the horizontal ion exchange unit includes a first positive electrode plate and a first negative electrode plate for electrolyzing water, the first positive electrode plate is disposed on a side of the first regeneration water path away from the first anion exchange membrane, and the first negative electrode plate is mounted on a side of the second regeneration water path away from the first cation exchange membrane.
Preferably, the cation exchange unit layer is provided as a cation exchange resin.
Preferably, the cation exchange resin is one of a strongly acidic cation exchange resin and a weakly acidic cation exchange resin, or a combination of both.
Preferably, the anion exchange unit layer is provided as an anion exchange resin.
Preferably, the anion exchange resin is one of a strongly basic anion exchange resin or a weakly basic anion exchange resin, or a combination of the two.
Preferably, the mixed ion exchange unit is provided with a mixed resin unit, and the mixed resin unit is interposed between the second cation exchange membrane and the second anion exchange membrane.
Preferably, the mixed resin unit is formed by mixing a cation exchange resin and an anion exchange resin.
Preferably, the regeneration water path of the hybrid ion exchange unit includes a third regeneration water path and a fourth regeneration water path, the second anion exchange membrane constitutes a part of the third regeneration water path, the second cation exchange membrane constitutes a part of the fourth regeneration water path, and the regeneration water passes through the third regeneration water path and the fourth regeneration water path in this order and is discharged as pure water.
Preferably, the hybrid ion exchange unit further includes a second positive electrode plate and a second negative electrode plate for electrolyzing water, the second positive electrode plate being disposed on a side of the third regeneration water path remote from the second anion exchange membrane, and the second negative electrode plate being disposed on a side of the fourth regeneration water path remote from the second cation exchange membrane.
In the desalting process of the horizontal ion exchange unit, the regeneration water path of the horizontal ion exchange unit is closed, no electrolytic voltage is applied, and raw water passes through the cation exchange unit layer and the anion exchange unit layer of the horizontal ion exchange unit in sequence and is discharged as pure water.
Specifically, in the cation exchange unit layer, positive salt ions to be desalted in raw water are replaced by hydrogen ions in the cation exchange unit layer, the positive salt ions are adsorbed by the cation exchange unit layer, the hydrogen ions are replaced, the replaced hydrogen ions enter the next layer of anion exchange unit layer along with the raw water, negative salt ions in the raw water are replaced by hydroxyl ions in the anion exchange unit layer, the negative salt ions are adsorbed by the anion exchange unit layer, the hydroxyl ions are replaced, the hydroxyl ions and the hydrogen ions react to generate water, the water is discharged in the form of pure water, and the pure water of the transverse type ion exchange unit is used as the raw water of the mixed type ion exchange unit.
In the desalting process of the mixed ion exchange unit, hydrogen ions in the cation exchange resin of the mixed ion exchange unit displace undesalted salt positive ions, the salt positive ions are adsorbed by the cation exchange resin, and the hydrogen ions are displaced; the hydroxide ions in the anion exchange resin of the mixed type ion exchange unit displace the undesalted salt negative ions, the salt negative ions are absorbed by the anion exchange resin, and the hydroxide ions are displaced; the displaced hydrogen ions and hydroxide ions react to produce water, which is discharged as pure water.
In the regeneration process of the transverse ion exchange unit, the desalination water channel of the transverse ion exchange unit is closed, electrolysis voltage is applied, and the regenerated water enters from the first regenerated water channel and is discharged from the second regenerated water channel;
specifically, under the condition of applying an electrolytic voltage, water generated by combining hydrogen ions and hydroxyl ions between a cation exchange unit layer and an anion exchange unit layer of the transverse ion exchange unit is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydroxyl ions move towards the first positive plate, salt negative ions in the anion exchange resin are replaced in the process of the hydroxyl ion movement, and the replaced salt negative ions penetrate through the first anion exchange membrane and enter the first regeneration water path under the electric attraction of the first positive plate.
Meanwhile, hydrogen ions move towards the first negative plate, positive salt ions in the cation exchange resin are replaced in the hydrogen ion moving process, and the replaced positive salt ions penetrate through the cation exchange membrane and enter the second regeneration water path under the electric attraction of the first negative plate.
In the second regeneration water path, the replaced positive salt ions and the replaced negative salt ions are combined, and finally the salt ions are discharged from the second regeneration water path in the form of concentrated water.
During regeneration of the hybrid ion exchange unit, the desalination water circuit of the hybrid ion exchange unit is closed. When the electrolytic voltage is applied, the regenerated water enters the third regeneration water path and is discharged from the fourth regeneration water path.
Specifically, under the condition of applying an electrolytic voltage, water generated by hydrogen ions and hydroxyl ions floating in the hybrid ion exchange unit in the desalination process is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydrogen ions move towards the second positive plate, in the process of moving the hydroxyl ions, salt negative ions adsorbed in the anion exchange resin of the hybrid ion exchange unit are replaced, and under the electric attraction of the second positive plate, the replaced salt negative ions pass through the second anion exchange membrane and enter the third regeneration water path.
Meanwhile, hydrogen ions move towards the second negative electrode, in the process of moving the hydrogen ions, positive salt ions in the cation exchange resin of the mixed resin unit are replaced, and under the electric attraction of the second negative electrode plate, the replaced positive salt ions penetrate through the third cation exchange membrane and enter the fourth regeneration water path.
In the third regeneration water path, the replaced salt positive ions and the salt negative ions are combined, and finally the salt positive ions and the salt negative ions are discharged from the fourth regeneration water path in the form of concentrated water.
The invention relates to a water purifier, which is provided with a mixed horizontal ion exchange water purification system, wherein the water purification system is used for desalting and purifying water and is provided with a horizontal ion exchange unit and a mixed ion exchange unit, and raw water is discharged as pure water after sequentially passing through the horizontal ion exchange regeneration unit and the mixed ion exchange unit; the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are vertical relative to the water flow direction under the desalting working condition. This warning system can carry out multiple filtration to the raw water, and the desalination in-process does not produce waste water, can further improve the product water quality of pure water, can also reverse electrolysis hydrogen ion and hydroxyl ion, and salt positive ion and salt negative ion in the water purification system after will desalinating for a long time replace, improve water purification system's utilization ratio, prolong the life of water purifier.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limiting.
Fig. 1 is a schematic diagram of a desalination water circuit of a water purification system.
Fig. 2 is a schematic diagram of a regeneration water circuit of the water purification system.
In fig. 1 to 2, the method includes:
a horizontal ion exchange unit 100,
A mixed ion exchange unit 200,
A mixed resin unit 210, a second cation exchange membrane 220, a second anion exchange membrane 230, a third regeneration water path 240, and a fourth regeneration water path 250.
Detailed Description
The invention is further illustrated by the following examples.
Example 1.
A mixed horizontal type ion exchange water purification system is provided with a horizontal type ion exchange unit 100 and a mixed type ion exchange unit 200 as shown in figures 1 and 2, raw water passes through the horizontal type ion exchange regeneration unit and the mixed type ion exchange unit 200 in sequence and then is discharged as pure water; the layers of the cation exchange unit 110 and the anion exchange unit 120 of the horizontal ion exchange unit 100 are perpendicular to the direction of water flow in the desalination condition.
In this embodiment, the horizontal ion exchange unit 100 is installed in the front water path of the hybrid ion exchange unit 200, and pure water in the horizontal ion exchange unit 100 is used as raw water in the hybrid ion exchange unit 200.
The horizontal ion exchange unit 100 may be installed in a water path at a rear stage of the hybrid ion exchange unit 200, and pure water in the hybrid ion exchange unit 200 is not limited to one connection form in the present embodiment as the raw water of the horizontal ion exchange unit 100.
In this embodiment, the cation exchange unit 110 layer and the anion exchange unit 120 layer of the horizontal ion exchange unit 100 are sandwiched between the first cation exchange membrane 130 and the first anion exchange membrane 140.
In the present embodiment, the regeneration water passage of the horizontal ion exchange unit 100 includes the first regeneration water passage 150 and the second regeneration water passage 160, the first anion exchange membrane 140 constitutes a partial structure of the first regeneration water passage 150, the first cation exchange membrane 130 constitutes a partial structure of the second regeneration water passage 160, and the regeneration water passes through the first regeneration water passage 150 and the second regeneration water passage 160 in order and is discharged as concentrated water.
In this embodiment, the horizontal ion exchange unit 100 is provided with a first positive electrode plate and a first negative electrode plate for electrolyzing water, the first positive electrode plate being provided on the side of the first regeneration water path 150 away from the first anion exchange membrane 140, and the first negative electrode plate being attached to the side of the second regeneration water path 160 away from the first cation exchange membrane 130.
In this embodiment, the layer of cation exchange units 110 is provided as a cation exchange resin.
In this embodiment, the cation exchange resin is a strongly acidic cation exchange resin, but the cation exchange resin may be a weakly acidic cation exchange resin, or a combination of both a strongly acidic cation exchange resin and a weakly acidic cation exchange resin, and is not limited to one of the embodiments.
In this embodiment, the anion exchange unit 120 layer is provided as an anion exchange resin.
In this embodiment, the anion exchange resin is a strongly basic anion exchange resin, and it should be noted that the cation exchange resin may also be a weakly basic anion exchange resin, or a combination of the strongly basic anion exchange resin and the weakly basic anion exchange resin, which is not limited to one of the embodiments.
In this embodiment, the hybrid ion exchange unit 200 is provided with a hybrid resin unit 210, and the hybrid resin unit 210 is sandwiched between a second cation exchange membrane 220 and a second anion exchange membrane 230.
In the present embodiment, the mixed resin unit 210 is formed by mixing a cation exchange resin and an anion exchange resin.
In this embodiment, the regeneration water path of the hybrid ion exchange unit 200 includes a third regeneration water path 240 and a fourth regeneration water path 250, the second anion exchange membrane 230 forms a part of the structure of the third regeneration water path 240, the second cation exchange membrane 220 forms a part of the structure of the fourth regeneration water path 250, and the regeneration water passes through the third regeneration water path 240 and the fourth regeneration water path 250 in sequence and is discharged as pure water.
In this embodiment, the hybrid ion exchange unit 200 is further provided with a second positive electrode plate and a second negative electrode plate for electrolyzing water, the second positive electrode plate is disposed on one side of the third regeneration water path 240 away from the second anion exchange membrane 230, and the second negative electrode plate is disposed on one side of the fourth regeneration water path 250 away from the second cation exchange membrane 220.
In the desalination process of the horizontal ion exchange unit 100, the regeneration water path of the horizontal ion exchange unit 100 is closed, and the raw water passes through the cation exchange unit 110 layer and the anion exchange unit 120 layer of the horizontal ion exchange unit 100 in this order without applying an electrolysis voltage, and is discharged as pure water.
Specifically, in the cation exchange unit 110 layer, the positive salt ions to be desalted in the raw water are replaced by the hydrogen ions in the cation exchange unit 110 layer, the positive salt ions are adsorbed by the cation exchange unit 110 layer, the hydrogen ions are replaced, the replaced hydrogen ions enter the next anion exchange unit 120 layer along with the raw water, the negative salt ions in the raw water are replaced by the hydroxyl ions in the anion exchange unit 120 layer, the negative salt ions are adsorbed by the anion exchange unit 120 layer, the hydroxyl ions are replaced, the hydroxyl ions react with the hydrogen ions to generate water, the water is discharged in the form of pure water, and the pure water of the horizontal ion exchange unit 100 serves as the raw water of the hybrid ion exchange unit 200.
In the desalination process of the hybrid ion exchange unit 200, the hydrogen ions in the cation exchange resin of the hybrid ion exchange unit 200 displace the undesalted salt positive ions, the salt positive ions are adsorbed by the cation exchange resin, and the hydrogen ions are displaced; the hydroxide ions in the anion exchange resin of the mixed ion exchange unit 200 displace the undesalted salt anions, the salt anions are adsorbed by the anion exchange resin, and the hydroxide ions are displaced; the displaced hydrogen ions and hydroxide ions react to produce water, which is discharged as pure water.
In the regeneration process of the horizontal ion exchange unit 100, the desalination water path of the horizontal ion exchange unit 100 is closed, the electrolysis voltage is applied, and the regeneration water enters from the first regeneration water path 150 and is discharged from the second regeneration water path 160;
specifically, under the condition of applying the electrolysis voltage, the water formed by combining the hydrogen ions and the hydroxyl ions between the layer 110 of the cation exchange unit and the layer 120 of the anion exchange unit 100 is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolysis voltage, the hydroxyl ions move toward the first positive plate, the salt anions in the anion exchange resin are replaced during the movement of the hydroxyl ions, and the replaced salt anions are attracted by the first positive plate electrically and enter the first regenerated water path 150 through the first anion exchange membrane 140.
Meanwhile, the hydrogen ions move toward the first negative plate, and in the process of moving the hydrogen ions, the salt positive ions in the cation exchange resin are displaced, and under the electrical attraction of the first negative plate, the displaced salt positive ions penetrate through the cation exchange membrane and enter the second regeneration water path 160.
In the second regeneration water path 160, the displaced salt positive ions and salt negative ions are combined, and finally discharged as concentrated water from the second regeneration water path 160.
During regeneration of the hybrid ion exchange unit 200, the desalination water circuit of the hybrid ion exchange unit 200 is closed. When the electrolysis voltage is applied, the regeneration water is introduced from the third regeneration water path 240 and discharged from the fourth regeneration water path 250.
Specifically, under the condition of applying the electrolytic voltage, the water generated from the hydrogen ions and the hydroxyl ions floating in the hybrid ion exchange unit 200 during the desalination process is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydrogen ions move toward the second positive electrode plate, the salt anions adsorbed in the anion exchange resin of the hybrid ion exchange unit 200 are replaced during the movement of the hydroxyl ions, and the replaced salt anions pass through the second anion exchange membrane 230 and enter the third regeneration water path 240 under the electrical attraction of the second positive electrode plate.
Meanwhile, the hydrogen ions move toward the second negative electrode plate, and in the process of moving the hydrogen ions, the positive salt ions in the cation exchange resin of the mixed resin unit 210 are replaced, and under the electrical attraction of the second negative electrode plate, the replaced positive salt ions penetrate through the third cation exchange membrane and enter the fourth regeneration water path 250.
In the third regeneration water path 240, the displaced salt positive ions and salt negative ions are combined, and finally discharged as concentrated water from the fourth regeneration water path 250.
The mixed horizontal ion exchange water purification system of the embodiment is provided with a horizontal ion exchange unit 100 and a mixed ion exchange unit 200, and raw water passes through the horizontal ion exchange regeneration unit and the mixed ion exchange unit 200 in sequence and then is discharged as pure water; the layers of the cation exchange unit 110 and the anion exchange unit 120 of the horizontal ion exchange unit 100 are perpendicular to the direction of water flow in the desalination condition. The raw water can be subjected to multiple filtration through the transverse ion exchange unit 100 and the mixed ion exchange unit 200, no wastewater is generated in the desalting process, the water production quality of the pure water can be further improved, hydrogen ions and hydroxyl ions can be reversely electrolyzed, salt positive ions and salt negative ions in the water purification system after long-term desalting are replaced, the utilization rate of the water purification system is improved, and the replacement frequency of the water purification system is reduced.
Example 2.
A mixed horizontal ion exchange water purification method is used for desalting and purifying water through a mixed horizontal ion exchange water purification system.
In the desalting process of the horizontal ion exchange unit, the regeneration water path of the horizontal ion exchange unit is closed, no electrolytic voltage is applied, and raw water passes through the cation exchange unit layer and the anion exchange unit layer of the horizontal ion exchange unit in sequence and is discharged as pure water.
Specifically, in the cation exchange unit layer, positive salt ions to be desalted in raw water are replaced by hydrogen ions in the cation exchange unit layer, the positive salt ions are adsorbed by the cation exchange unit layer, the hydrogen ions are replaced, the replaced hydrogen ions enter the next layer of anion exchange unit layer along with the raw water, negative salt ions in the raw water are replaced by hydroxyl ions in the anion exchange unit layer, the negative salt ions are adsorbed by the anion exchange unit layer, the hydroxyl ions are replaced, the hydroxyl ions and the hydrogen ions react to generate water, the water is discharged in the form of pure water, and the pure water of the transverse type ion exchange unit is used as the raw water of the mixed type ion exchange unit.
In the desalting process of the mixed ion exchange unit, hydrogen ions in the cation exchange resin of the mixed ion exchange unit displace undesalted salt positive ions, the salt positive ions are adsorbed by the cation exchange resin, and the hydrogen ions are displaced; the hydroxide ions in the anion exchange resin of the mixed type ion exchange unit displace the undesalted salt negative ions, the salt negative ions are absorbed by the anion exchange resin, and the hydroxide ions are displaced; the displaced hydrogen ions and hydroxide ions react to produce water, which is discharged as pure water.
In the regeneration process of the transverse ion exchange unit, the desalination water channel of the transverse ion exchange unit is closed, electrolysis voltage is applied, and the regenerated water enters from the first regenerated water channel and is discharged from the second regenerated water channel;
specifically, under the condition of applying an electrolytic voltage, water generated by combining hydrogen ions and hydroxyl ions between a cation exchange unit layer and an anion exchange unit layer of the transverse ion exchange unit is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydroxyl ions move towards the first positive plate, salt negative ions in the anion exchange resin are replaced in the process of the hydroxyl ion movement, and the replaced salt negative ions penetrate through the first anion exchange membrane and enter the first regeneration water path under the electric attraction of the first positive plate.
Meanwhile, hydrogen ions move towards the first negative plate, positive salt ions in the cation exchange resin are replaced in the hydrogen ion moving process, and the replaced positive salt ions penetrate through the cation exchange membrane and enter the second regeneration water path under the electric attraction of the first negative plate.
In the second regeneration water path, the replaced positive salt ions and the replaced negative salt ions are combined, and finally the salt ions are discharged from the second regeneration water path in the form of concentrated water.
During regeneration of the hybrid ion exchange unit, the desalination water circuit of the hybrid ion exchange unit is closed. When the electrolytic voltage is applied, the regenerated water enters the third regeneration water path and is discharged from the fourth regeneration water path.
Specifically, under the condition of applying an electrolytic voltage, water generated by hydrogen ions and hydroxyl ions floating in the hybrid ion exchange unit in the desalination process is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydrogen ions move towards the second positive plate, in the process of moving the hydroxyl ions, salt negative ions adsorbed in the anion exchange resin of the hybrid ion exchange unit are replaced, and under the electric attraction of the second positive plate, the replaced salt negative ions pass through the second anion exchange membrane and enter the third regeneration water path.
Meanwhile, hydrogen ions move towards the second negative electrode, in the process of moving the hydrogen ions, positive salt ions in the cation exchange resin of the mixed resin unit are replaced, and under the electric attraction of the second negative electrode plate, the replaced positive salt ions penetrate through the third cation exchange membrane and enter the fourth regeneration water path.
In the third regeneration water path, the replaced salt positive ions and the salt negative ions are combined, and finally the salt positive ions and the salt negative ions are discharged from the fourth regeneration water path in the form of concentrated water.
According to the mixed horizontal ion exchange water purification method, desalination and water purification are carried out through the mixed horizontal ion exchange water purification system, multiple filtration can be carried out on raw water, no wastewater is generated in the desalination process, the water production quality of the pure water can be further improved, hydrogen ions and hydroxyl ions can be electrolyzed reversely, salt positive ions and salt negative ions in the water purification system after long-term desalination are replaced, the utilization rate of the water purification system is improved, and the replacement frequency of the water purification system is reduced.
Example 3.
A water purifier is provided with a mixed horizontal ion exchange water purification system, and desalination and water purification are carried out by adopting the water purification system.
The water purification system of the embodiment is provided with a horizontal ion exchange unit and a mixed ion exchange unit, and raw water is discharged as pure water after sequentially passing through the horizontal ion exchange regeneration unit and the mixed ion exchange unit; the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are vertical relative to the water flow direction under the desalting working condition.
In this embodiment, the horizontal ion exchange unit is installed in the front water path of the hybrid ion exchange unit, and pure water in the horizontal ion exchange unit is used as raw water in the hybrid ion exchange unit.
The horizontal ion exchange unit may be installed in a water path at a rear stage of the hybrid ion exchange unit, and pure water in the hybrid ion exchange unit may be used as raw water in the horizontal ion exchange unit.
In this embodiment, the cation exchange unit layer and the anion exchange unit layer of the horizontal ion exchange unit are sandwiched between the first cation exchange membrane and the first anion exchange membrane.
In this embodiment, the regeneration water path of the horizontal ion exchange unit includes a first regeneration water path and a second regeneration water path, the first anion exchange membrane forms a partial structure of the first regeneration water path, the first cation exchange membrane forms a partial structure of the second regeneration water path, and the regeneration water passes through the first regeneration water path and the second regeneration water path in sequence and is discharged as concentrated water.
In this embodiment, the horizontal ion exchange unit is provided with a first positive electrode plate and a first negative electrode plate for electrolyzing water, the first positive electrode plate is disposed on one side of the first regeneration water path away from the first anion exchange membrane, and the first negative electrode plate is assembled on one side of the second regeneration water path away from the first cation exchange membrane.
In this embodiment, the cation exchange unit layer is provided as a cation exchange resin.
In this embodiment, the cation exchange resin is a strongly acidic cation exchange resin, but the cation exchange resin may be a weakly acidic cation exchange resin, or a combination of both a strongly acidic cation exchange resin and a weakly acidic cation exchange resin, and is not limited to one of the embodiments.
In this embodiment, the anion exchange unit layer is provided as an anion exchange resin.
In this embodiment, the anion exchange resin is a strongly basic anion exchange resin, and it should be noted that the cation exchange resin may also be a weakly basic anion exchange resin, or a combination of the strongly basic anion exchange resin and the weakly basic anion exchange resin, which is not limited to one of the embodiments.
In this embodiment, the hybrid ion exchange unit is provided with a hybrid resin unit, and the hybrid resin unit is sandwiched between the second cation exchange membrane and the second anion exchange membrane.
In this example, the mixed resin unit is formed by mixing a cation exchange resin and an anion exchange resin.
In this embodiment, the regeneration water path of the hybrid ion exchange unit includes a third regeneration water path and a fourth regeneration water path, the second anion exchange membrane forms a partial structure of the third regeneration water path, the second cation exchange membrane forms a partial structure of the fourth regeneration water path, and the regeneration water passes through the third regeneration water path and the fourth regeneration water path in sequence and is discharged as pure water.
In this embodiment, the hybrid ion exchange unit further includes a second positive electrode plate and a second negative electrode plate for electrolyzing water, the second positive electrode plate is disposed on a side of the third regeneration water path away from the second anion exchange membrane, and the second negative electrode plate is disposed on a side of the fourth regeneration water path away from the second cation exchange membrane.
In the desalting process of the horizontal ion exchange unit, the regeneration water path of the horizontal ion exchange unit is closed, no electrolytic voltage is applied, and raw water passes through the cation exchange unit layer and the anion exchange unit layer of the horizontal ion exchange unit in sequence and is discharged as pure water.
Specifically, in the cation exchange unit layer, positive salt ions to be desalted in raw water are replaced by hydrogen ions in the cation exchange unit layer, the positive salt ions are adsorbed by the cation exchange unit layer, the hydrogen ions are replaced, the replaced hydrogen ions enter the next layer of anion exchange unit layer along with the raw water, negative salt ions in the raw water are replaced by hydroxyl ions in the anion exchange unit layer, the negative salt ions are adsorbed by the anion exchange unit layer, the hydroxyl ions are replaced, the hydroxyl ions and the hydrogen ions react to generate water, the water is discharged in the form of pure water, and the pure water of the transverse type ion exchange unit is used as the raw water of the mixed type ion exchange unit.
In the desalting process of the mixed ion exchange unit, hydrogen ions in the cation exchange resin of the mixed ion exchange unit displace undesalted salt positive ions, the salt positive ions are adsorbed by the cation exchange resin, and the hydrogen ions are displaced; the hydroxide ions in the anion exchange resin of the mixed type ion exchange unit displace the undesalted salt negative ions, the salt negative ions are absorbed by the anion exchange resin, and the hydroxide ions are displaced; the displaced hydrogen ions and hydroxide ions react to produce water, which is discharged as pure water.
In the regeneration process of the transverse ion exchange unit, the desalination water channel of the transverse ion exchange unit is closed, electrolysis voltage is applied, and the regenerated water enters from the first regenerated water channel and is discharged from the second regenerated water channel;
specifically, under the condition of applying an electrolytic voltage, water generated by combining hydrogen ions and hydroxyl ions between a cation exchange unit layer and an anion exchange unit layer of the transverse ion exchange unit is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydroxyl ions move towards the first positive plate, salt negative ions in the anion exchange resin are replaced in the process of the hydroxyl ion movement, and the replaced salt negative ions penetrate through the first anion exchange membrane and enter the first regeneration water path under the electric attraction of the first positive plate.
Meanwhile, hydrogen ions move towards the first negative plate, positive salt ions in the cation exchange resin are replaced in the hydrogen ion moving process, and the replaced positive salt ions penetrate through the cation exchange membrane and enter the second regeneration water path under the electric attraction of the first negative plate.
In the second regeneration water path, the replaced positive salt ions and the replaced negative salt ions are combined, and finally the salt ions are discharged from the second regeneration water path in the form of concentrated water.
During regeneration of the hybrid ion exchange unit, the desalination water circuit of the hybrid ion exchange unit is closed. When the electrolytic voltage is applied, the regenerated water enters the third regeneration water path and is discharged from the fourth regeneration water path.
Specifically, under the condition of applying an electrolytic voltage, water generated by hydrogen ions and hydroxyl ions floating in the hybrid ion exchange unit in the desalination process is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolytic voltage, the hydrogen ions move towards the second positive plate, in the process of moving the hydroxyl ions, salt negative ions adsorbed in the anion exchange resin of the hybrid ion exchange unit are replaced, and under the electric attraction of the second positive plate, the replaced salt negative ions pass through the second anion exchange membrane and enter the third regeneration water path.
Meanwhile, hydrogen ions move towards the second negative electrode, in the process of moving the hydrogen ions, positive salt ions in the cation exchange resin of the mixed resin unit are replaced, and under the electric attraction of the second negative electrode plate, the replaced positive salt ions penetrate through the third cation exchange membrane and enter the fourth regeneration water path.
In the third regeneration water path, the replaced salt positive ions and the salt negative ions are combined, and finally the salt positive ions and the salt negative ions are discharged from the fourth regeneration water path in the form of concentrated water.
The water purifier of the embodiment is provided with a mixed horizontal ion exchange water purification system, desalination and water purification are carried out by adopting the water purification system, the water purification system is provided with a horizontal ion exchange unit and a mixed ion exchange unit, and raw water passes through the horizontal ion exchange regeneration unit and the mixed ion exchange unit in sequence and then is discharged as pure water; the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are vertical relative to the water flow direction under the desalting working condition. This warning system can carry out multiple filtration to the raw water, and the desalination in-process does not produce waste water, can further improve the product water quality of pure water, can also reverse electrolysis hydrogen ion and hydroxyl ion, and salt positive ion and salt negative ion in the water purification system after will desalinating for a long time replace, improve water purification system's utilization ratio, prolong the life of water purifier.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (14)
1. The utility model provides a mix horizontal formula ion exchange water purification system which characterized in that: the device is provided with a horizontal ion exchange unit and a mixed ion exchange unit, and raw water passes through the horizontal ion exchange regeneration unit and the mixed ion exchange unit in sequence and then is discharged as pure water;
the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are vertical relative to the water flow direction under the desalting working condition.
2. The hybrid horizontal ion exchange water purification system of claim 1, wherein: the horizontal ion exchange unit is arranged in a front-section water channel of the hybrid ion exchange unit, and pure water of the horizontal ion exchange unit is used as raw water of the hybrid ion exchange unit.
3. The hybrid horizontal ion exchange water purification system of claim 1, wherein: the horizontal ion exchange unit is assembled on a rear section water path of the hybrid ion exchange unit, and pure water of the hybrid ion exchange unit is used as raw water of the horizontal ion exchange unit.
4. The hybrid horizontal ion exchange water purification system of claim 1, wherein: and the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit are clamped between the first cation exchange membrane and the first anion exchange membrane.
5. The hybrid horizontal ion exchange water purification system of claim 4, wherein: the regeneration water path of the transverse ion exchange unit comprises a first regeneration water path and a second regeneration water path, a first anion exchange membrane forms part of the structure of the first regeneration water path, a first cation exchange membrane forms part of the structure of the second regeneration water path, and the regeneration water passes through the first regeneration water path and the second regeneration water path in sequence and then is discharged as concentrated water.
6. The hybrid horizontal ion exchange water purification system of claim 5, wherein: the transverse ion exchange unit is provided with a first positive plate and a first negative plate which are used for electrolyzing water, the first positive plate is arranged on one side of the first regeneration water path, which is far away from the first anion exchange membrane, and the first negative plate is assembled on one side of the second regeneration water path, which is far away from the first cation exchange membrane.
7. The hybrid horizontal ion exchange water purification system of claim 5, wherein: the cation exchange unit layer is set as cation exchange resin, and the anion exchange unit layer is set as anion exchange resin;
the cation exchange resin is one of strong acid cation exchange resin or weak acid cation exchange resin, or the combination of the two;
the anion exchange resin is one of strong base anion exchange resin or weak base anion exchange resin, or the combination of the two.
8. The mixed horizontal ion exchange water purification system according to any one of claims 1 to 3, wherein: the mixed type ion exchange unit is provided with a mixed resin unit, the mixed resin unit is clamped between a second cation exchange membrane and a second anion exchange membrane, and the mixed resin unit is formed by mixing cation exchange resin and anion exchange resin.
9. The hybrid horizontal ion exchange water purification system of claim 8, wherein: the regeneration water path of the hybrid ion exchange unit comprises a third regeneration water path and a fourth regeneration water path, a second anion exchange membrane forms part of the structure of the third regeneration water path, a second cation exchange membrane forms part of the structure of the fourth regeneration water path, and the regeneration water passes through the third regeneration water path and the fourth regeneration water path in sequence and then is discharged as pure water.
10. The hybrid horizontal ion exchange water purification system of claim 9, wherein: the hybrid ion exchange unit is also provided with a second positive plate and a second negative plate which are used for electrolyzing water, the second positive plate is arranged on one side of the third regeneration water channel, which is far away from the second anion exchange membrane, and the second negative plate is arranged on one side of the fourth regeneration water channel, which is far away from the second cation exchange membrane.
11. A mixed horizontal ion exchange water purification method is characterized in that: the mixed horizontal ion exchange water purification system of any one of claims 1 to 10 is adopted for desalination and water purification;
in the desalting process of the transverse ion exchange unit, a regeneration water path of the transverse ion exchange unit is closed, no electrolytic voltage is applied, and raw water is discharged as pure water after passing through a cation exchange unit layer and an anion exchange unit layer of the transverse ion exchange unit in sequence;
in the cation exchange unit layer, positive salt ions to be desalted in raw water are replaced by hydrogen ions in the cation exchange unit layer, positive salt ions are adsorbed by the cation exchange unit layer, hydrogen ions are replaced out, the replaced hydrogen ions enter the next anion exchange unit layer along with the raw water, negative salt ions in the raw water are replaced by hydroxyl ions in the anion exchange unit layer, negative salt ions are adsorbed by the anion exchange unit layer, the hydroxyl ions are replaced out, the hydroxyl ions react with the hydrogen ions to generate water, the water is discharged in the form of pure water, and the pure water of the horizontal ion exchange unit is used as the raw water of the mixed ion exchange unit;
in the desalting process of the mixed ion exchange unit, hydrogen ions in the cation exchange resin of the mixed ion exchange unit displace undesalted salt positive ions, the salt positive ions are adsorbed by the cation exchange resin, and the hydrogen ions are displaced; the hydroxide ions in the anion exchange resin of the mixed type ion exchange unit displace the undesalted salt negative ions, the salt negative ions are absorbed by the anion exchange resin, and the hydroxide ions are displaced; the displaced hydrogen ions and hydroxide ions react to produce water, which is discharged as pure water.
12. The mixed horizontal ion exchange water purification method of claim 11, wherein: in the regeneration process of the transverse ion exchange unit, the desalination water channel of the transverse ion exchange unit is closed, electrolysis voltage is applied, and the regenerated water enters from the first regenerated water channel and is discharged from the second regenerated water channel;
under the condition of applying electrolysis voltage, the water generated by combining hydrogen ions and hydroxyl ions between the cation exchange unit layer and the anion exchange unit layer of the transverse ion exchange unit is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolysis voltage, the hydroxyl ions move towards the first positive plate, salt negative ions in the anion exchange resin are replaced in the process of moving the hydroxyl ions, and the replaced salt negative ions enter the first regeneration water path through the first anion exchange membrane under the electric attraction of the first positive plate;
meanwhile, hydrogen ions move towards the first negative plate, positive salt ions in the cation exchange resin are replaced in the hydrogen ion moving process, and the replaced positive salt ions penetrate through the cation exchange membrane and enter the second regeneration water path under the electric attraction of the first negative plate;
in the second regeneration water path, the replaced positive salt ions and the replaced negative salt ions are combined, and finally the salt ions are discharged from the second regeneration water path in the form of concentrated water.
13. The mixed horizontal ion exchange water purification method of claim 12, wherein: during regeneration of the hybrid ion exchange unit, the desalination water circuit of the hybrid ion exchange unit is closed. Applying electrolysis voltage, and discharging the regenerated water from the third regenerated water path and the fourth regenerated water path;
under the condition of applying electrolysis voltage, water generated by hydrogen ions and hydroxyl ions floating in the hybrid type ion exchange unit in the desalting process is decomposed into hydrogen ions and hydroxyl ions again under the action of the electrolysis voltage, the hydrogen ions move towards the second positive plate, salt negative ions adsorbed in the anion exchange resin of the hybrid type ion exchange unit are replaced in the process of moving the hydroxyl ions, and the replaced salt negative ions enter a third regeneration water path through the second anion exchange membrane under the electric attraction of the second positive plate;
meanwhile, hydrogen ions move towards the second negative electrode, positive salt ions in the cation exchange resin of the mixed resin unit are replaced in the hydrogen ion moving process, and the replaced positive salt ions enter a fourth regeneration water path through the third cation exchange membrane under the electric attraction of the second negative electrode plate;
in the third regeneration water path, the replaced salt positive ions and the salt negative ions are combined, and finally the salt positive ions and the salt negative ions are discharged from the fourth regeneration water path in the form of concentrated water.
14. A water purifier is characterized in that: a mixed horizontal ion exchange water purification system as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010183964.XA CN111233096A (en) | 2020-03-16 | 2020-03-16 | Mixed horizontal ion exchange water purification system and method and water purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010183964.XA CN111233096A (en) | 2020-03-16 | 2020-03-16 | Mixed horizontal ion exchange water purification system and method and water purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111233096A true CN111233096A (en) | 2020-06-05 |
Family
ID=70862116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010183964.XA Pending CN111233096A (en) | 2020-03-16 | 2020-03-16 | Mixed horizontal ion exchange water purification system and method and water purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111233096A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB776469A (en) * | 1953-12-17 | 1957-06-05 | Tno | Process and apparatus for the electrolytic deionisation of salt-containing liquids |
| JP2001334269A (en) * | 2000-05-26 | 2001-12-04 | Matsushita Electric Ind Co Ltd | Apparatus and bath for circulating/softening bathtub water |
| JP2007301430A (en) * | 2006-05-08 | 2007-11-22 | Nippon Rensui Co Ltd | Electric regeneration type pure water producing apparatus, and method for producing pure water |
| CN101979329A (en) * | 2010-12-06 | 2011-02-23 | 重庆宽能科技有限公司 | Ion exchange desalting method and device |
| WO2015088278A1 (en) * | 2013-12-13 | 2015-06-18 | 삼성전자주식회사 | Water softening device and method for regenerating ion exchange resin |
| CN211896158U (en) * | 2020-03-16 | 2020-11-10 | 佛山市云米电器科技有限公司 | Mixed horizontal type ion exchange water purification system and water purifier |
-
2020
- 2020-03-16 CN CN202010183964.XA patent/CN111233096A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB776469A (en) * | 1953-12-17 | 1957-06-05 | Tno | Process and apparatus for the electrolytic deionisation of salt-containing liquids |
| JP2001334269A (en) * | 2000-05-26 | 2001-12-04 | Matsushita Electric Ind Co Ltd | Apparatus and bath for circulating/softening bathtub water |
| JP2007301430A (en) * | 2006-05-08 | 2007-11-22 | Nippon Rensui Co Ltd | Electric regeneration type pure water producing apparatus, and method for producing pure water |
| CN101979329A (en) * | 2010-12-06 | 2011-02-23 | 重庆宽能科技有限公司 | Ion exchange desalting method and device |
| WO2015088278A1 (en) * | 2013-12-13 | 2015-06-18 | 삼성전자주식회사 | Water softening device and method for regenerating ion exchange resin |
| CN211896158U (en) * | 2020-03-16 | 2020-11-10 | 佛山市云米电器科技有限公司 | Mixed horizontal type ion exchange water purification system and water purifier |
Non-Patent Citations (1)
| Title |
|---|
| 王方: "《绿色电去离子水处理技术》", 中国环境科学出版社, pages: 62 - 63 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5593563A (en) | Electrodeionization process for purifying a liquid | |
| US7699968B2 (en) | Water purifying system | |
| CN111233086A (en) | One-way anion exchange type water filtering and purifying system and method and water purifier | |
| JP5295927B2 (en) | Electric deionized water production equipment | |
| JP5145305B2 (en) | Electric deionized water production equipment | |
| CN211896158U (en) | Mixed horizontal type ion exchange water purification system and water purifier | |
| CN212198606U (en) | One-way cation mixed exchange type water purification system and water purifier | |
| JP5114307B2 (en) | Electric deionized water production equipment | |
| CN212151698U (en) | Multiple ion exchange formula drainage clean system and water purifier | |
| CN211896161U (en) | One-way anion mixed exchange type water purification system and water purifier | |
| CN111233221A (en) | Water purification method and system and water purifier with stable pure water output | |
| CN211896159U (en) | Water filtration and purification system based on ion exchange and water purifier | |
| JP5379025B2 (en) | Electric deionized water production equipment | |
| CN212151694U (en) | Horizontal formula drainage clean system of functional unit and water purifier | |
| CN212151695U (en) | One-way anion exchange type water filtering and purifying system and water purifier | |
| CN212151700U (en) | Water filtration and purification system based on multi-group ion exchange and water purifier | |
| CN111233087A (en) | Functional unit transverse type water filtering and purifying system and method and water purifier | |
| CN111233096A (en) | Mixed horizontal ion exchange water purification system and method and water purifier | |
| CN212151930U (en) | Water purification system and water purifier with multiple purification units | |
| JP5415966B2 (en) | Electric deionized water production apparatus and deionized water production method | |
| CN212151929U (en) | High-yield water RO (reverse osmosis) water filtering and purifying system based on electrically regenerated resin and water purifier | |
| CN211896160U (en) | Water purification system and water purifier | |
| CN212151699U (en) | Mixed ion exchange type water filtering and purifying system and water purifier | |
| JP3729347B2 (en) | Electric regenerative desalination equipment | |
| CN212151692U (en) | Flat-plate type ion exchange water purification system and water purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211025 Address after: 528308 No.2, North Xinxi 4th Road, Xiashi village, Lunjiao street, Shunde District, Foshan City, Guangdong Province Applicant after: Guangdong Chestnut Technology Co.,Ltd. Address before: 528300 Nepheline Village Committee, Lunjiao Sub-district Office, Shunde District, Foshan City, Guangdong Province Applicant before: FOSHAN VIOMI ELECTRICAL TECHNOLOGY Co.,Ltd. Applicant before: Chen Xiaoping |