CN111320243A - Membrane-free electrodeionization method and device with current perpendicular to water flow direction - Google Patents
Membrane-free electrodeionization method and device with current perpendicular to water flow direction Download PDFInfo
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- CN111320243A CN111320243A CN202010279050.3A CN202010279050A CN111320243A CN 111320243 A CN111320243 A CN 111320243A CN 202010279050 A CN202010279050 A CN 202010279050A CN 111320243 A CN111320243 A CN 111320243A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000009296 electrodeionization Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 49
- 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 abstract description 48
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 45
- 230000008929 regeneration Effects 0.000 claims abstract description 35
- 238000011069 regeneration method Methods 0.000 claims abstract description 35
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 150000002500 ions Chemical class 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 238000005342 ion exchange Methods 0.000 claims abstract description 7
- 230000001737 promoting effect Effects 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 150000001768 cations Chemical class 0.000 claims description 10
- 239000010936 titanium Substances 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 10
- 150000001450 anions Chemical class 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 4
- 239000003957 anion exchange resin Substances 0.000 claims description 3
- 239000003729 cation exchange resin Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 abstract description 7
- 239000012498 ultrapure water Substances 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 238000009713 electroplating Methods 0.000 abstract description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 30
- 230000007547 defect Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000003014 ion exchange membrane Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- -1 electric power Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
- C02F2103/04—Non-contaminated water, e.g. for industrial water supply for obtaining ultra-pure water
-
- 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
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a method and a device for film-free electrodeionization with current perpendicular to the water flow direction. The method is that the left end and the right end of an ion exchange resin layer are respectively provided with a positive electrode and a negative electrode, and the operation is divided into a treatment stage and a regeneration stage; the treatment stage is the same as a common mixed bed; in the regeneration stage, high-voltage direct current is used for promoting the surface H of the ion exchange resin2Ionization of O molecules into H+And OH‑So that the ion exchange equilibrium of the resin is shifted toward the regeneration direction, and impurity ions desorbed from the resin are discharged with the water flow in the gaps of the resin bed. The device is a cubic insulation cavity with electrodes embedded on the left inner side and the right inner side; the cavity is filled with an upper slit plate, an upper layer of ion exchange resin and a middle layerThe device comprises an upper fine slit plate, a water collecting plate, a middle and lower fine slit plate, lower layer ion exchange resin and a lower fine slit plate; the left and right electrodes are connected with a high-voltage direct-current power supply. The invention is suitable for the purification of wastewater containing heavy metal ions, such as high-purity water preparation, electroplating rinsing and the like, and the treatment of water and wastewater aiming at removing ionic impurities.
Description
Technical Field
The invention relates to an electrodeionization device, in particular to a membraneless electrodeionization method and a membraneless electrodeionization device with current perpendicular to the water flow direction.
Technical Field
The demand of high-purity water in the fields of semiconductors, electric power, chemical industry, medicine, aerospace and the like is increasing, and the requirement on the quality of the high-purity water is also increasing. Electrodeionization (EDI) fully utilizes the technical advantages of Ion Exchange (IE) and Electrodialysis (EDI), and is an environment-friendly high-purity water preparation technology which only consumes electricity and does not need chemical agents. Since the introduction of commercial EDI products by Millipore corporation in 1987, EDI was well known to users and increasingly used.
Although EDI has the advantages of environmental friendliness, high efficiency and sustainability, there are many defects in the practical application process, such as: due to the use of a large number of anion and cation exchange membranes, the device has a complex structure and is troublesome to disassemble and assemble, so that the cost of equipment is inevitably increased. In addition, the EDI device has higher requirement on the quality of inlet water, and membrane pollution and the like sometimes occur. The defects seriously affect the stable operation of the EDI and limit the popularization and application of the EDI.
An authorized patent (patent number: CN201110048386.X) introduces an EDI technology (MFEDI for short) without an ion exchange membrane, and the authorized patent (patent number: CN 201410760013.9; CN201210016704.9) optimizes the MFEDI system. Compared with the traditional EDI technology, the MFEDI system completely abandons an ion exchange membrane component on the premise of ensuring the purification efficiency, and avoids the defects of membrane pollution and the like caused by the traditional EDI.
The MFEDI devices described in the above-mentioned granted patents all adopt a mode in which the cathode and anode electrodes are placed in parallel up and down, and the current and the water flow are in the same direction. However, in the process of industrial popularization, it is found that in the mode of parallel arrangement of the electrodes, because the anions and cations are simultaneously acted by the water flow and the electric field force, a phenomenon that the electric field force applied to one of the ions is opposite to the water flow direction inevitably exists. Taking the regeneration form that the cathode is arranged below the upper anode and the water flow flows from top to bottom as an example, in the regeneration process, the cations migrate to the cathode, and the regeneration water flow is not enough to take out all the cations, so that the ion accumulation is easy to occur, the regeneration effect is gradually reduced, and finally the system is failed. Although the problem can be solved by periodically inverting the electrode regeneration, the operation difficulty of the system is greatly increased, and the service life of the electrode is greatly shortened. In addition, in the mode of vertically placing the electrodes, the distance between the anode and the cathode is far, so that the regeneration voltage is high, and the energy consumption is increased.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention aims to provide a membrane-free electrodeionization method and a membrane-free electrodeionization device, wherein the current is perpendicular to the water flow direction, the method and the device do not need to be inverted, and the regeneration voltage and the energy consumption are low, so that ions in water or wastewater can be separated.
In order to achieve the purpose of the invention, the technical scheme of the invention is as follows:
membrane-free electrodeionization method with current perpendicular to water flow direction
The method is that the left end and the right end of an ion exchange resin layer are respectively provided with a positive electrode and a negative electrode, and the operation of the device is divided into two stages of treatment and regeneration; the treatment stage is the same as a common mixed bed; in the regeneration stage, high-voltage direct current is used for promoting a large amount of H on the surface of the ion exchange resin2Ionization of O molecules into H+And OH-So that the ion exchange equilibrium of the resin is shifted toward the regeneration direction, and the impurity ions desorbed from the resin are discharged from the apparatus from the top to the bottom along with the water flow in the gaps between the resin layers.
Second, a no-film electric deionizing device with current vertical to water flow direction
The invention comprises a casing, a left frame plate with a left electrode embedded on the inner side surface, and a cube-shaped insulating cavity consisting of a right frame plate with a right electrode embedded on the inner side surface; an upper fine slit plate, an upper layer of ion exchange resin, a middle upper fine slit plate, a water collecting plate, a middle lower fine slit plate, a lower layer of ion exchange resin and a lower fine slit plate are sequentially arranged in the insulating cavity from top to bottom; the shell is of a cubic structure with openings at the left end and the right end, the upper end face and the lower end face of the shell are respectively provided with an upper connector and a lower connector, and one side face of the shell is provided with an opening and is sealed by a plug; titanium screws and titanium nuts on the two side faces of the left frame plate and the right frame plate are connected into cables, and the titanium screws and the titanium nuts are respectively connected with the left electrode and the right electrode of the left frame plate and the right frame plate to form a high-voltage direct-current power supply.
Inserting grooves are sequentially formed in two inner sides of the shell between the left electrode and the right electrode, and the upper thin slit plate, the middle upper thin slit plate, the water converging plate, the middle lower thin slit plate and the lower thin slit plate are inserted into the grooves.
The inner sides of the left frame plate and the right frame plate are respectively provided with a clip-shaped rubber gasket, and after the fastening screw penetrates through the corresponding screw hole, the left frame plate, the right frame plate and the shell are connected into detachable sealing connection by a gasket and a fastening nut.
The left electrode and the right electrode are in a plate shape, a grid shape or a net shape, wherein one electrode is a cathode, and the other electrode is an anode.
The permeable gaps of the upper fine slit plate, the middle lower fine slit plate and the lower fine slit plate are smaller than the particle diameters of the upper layer ion exchange resin and the lower layer ion exchange resin.
The upper layer ion exchange resin and the lower layer ion exchange resin are anion and cation mixed ion exchange resin, amphoteric ion exchange resin, single anion exchange resin or single cation exchange resin.
The invention has the beneficial effects that:
1) in the regeneration process, the direction of current is vertical to that of water flow, and although anions and cations migrate to the two sides of the electrode, the anions and cations can be effectively controlled by the water collection plate. Can realize the stable preparation of high-purity water under the condition of no electrode inversion.
2) The distance between the electrodes is short, so that on one hand, the regeneration of resin is facilitated, and the purification performance is further enhanced; on the other hand, the current density required in the regeneration process is greatly reduced, the average voltage is reduced, and the regeneration energy consumption is obviously reduced by integrating all parameters.
3) The device is convenient to install and is not easy to damage.
The invention is suitable for the purification of wastewater containing heavy metal ions, such as high-purity water preparation, electroplating rinsing and the like, and the treatment of water and wastewater aiming at removing ionic impurities.
Drawings
FIG. 1 is an exploded three-dimensional view of the present invention.
Fig. 2 is a front sectional view a-a of fig. 1.
Fig. 3 is a left side sectional view B-B of fig. 1.
Fig. 4 is a top cross-sectional view of C-C of fig. 1.
In the figure: 1. the device comprises an upper interface, 2, a shell, 3, upper-layer ion exchange resin, 4, a right frame plate, 5, a rubber gasket, 6, a plug, 7, a left frame plate, 8, lower-layer ion exchange resin, 9, a lower interface, 10, an upper slit plate, 11, a titanium screw, 12, a titanium nut, 13, a left electrode, 14, a middle upper slit plate, 15, a water collecting plate, 16, a middle lower slit plate, 17, a lower slit plate, 18, a right electrode, 19, a fastening nut, 20, a fastening screw, 21, an opening, 22, a screw hole, 23 and a gasket.
Detailed Description
The invention is further illustrated by the following figures and examples.
Referring to fig. 1, 2, 3 and 4, the present invention provides a membraneless electrodeionization device with current perpendicular to water flow. Comprises a cubic insulation cavity body consisting of a shell 2, a left frame plate 7 with a left electrode 13 embedded in the inner side surface and a right frame plate 4 with a right electrode 18 embedded in the inner side surface;
an upper slit plate 10, an upper layer of ion exchange resin 3, a middle upper slit plate 14, a water collecting plate 15, a middle lower slit plate 16, a lower layer of ion exchange resin 8 and a lower slit plate 17 are sequentially arranged in the cubic insulating cavity from top to bottom;
Cables are connected to two side faces of the left frame plate 7 and the right frame plate 4, and the two side faces are respectively connected with a high-voltage direct-current power supply through a titanium screw 11 and a titanium nut 12 and a left electrode 13 and a right electrode 18 of the left frame plate and the right frame plate respectively, and the maximum current density provided by the high-voltage direct-current power supply is 500A/m2。
Inserting grooves are sequentially formed in two inner sides of the shell 2 between the left electrode 13 and the right electrode 18, and the upper thin slit plate 10, the upper middle thin slit plate 14, the water collecting plate 15, the middle lower thin slit plate 16 and the lower thin slit plate 17 are inserted into the grooves. The ion exchange resin in the insulating cavity can be filled in a single layer, double layers or multiple layers, the layers are separated by a combined structure of a middle upper fine slit plate 14, a water collecting plate 15 and a middle lower fine slit plate 16, and the double-layer filling is taken as an example for explanation.
The inner sides of the left frame plate 7 and the right frame plate 4 are respectively provided with a clip-shaped rubber gasket 5, and after a fastening screw 20 passes through a corresponding screw hole 22, the left frame plate 7, the right frame plate 4 and the shell 2 are connected into a detachable sealing connection by a gasket 23 and a fastening nut 19.
The left electrode 13 and the right electrode 18 are plate-shaped, grid-shaped or mesh-shaped, wherein one is a cathode and the other is an anode.
The permeable gaps of the upper fine slit plate 10, the middle upper fine slit plate 14, the middle lower fine slit plate 16 and the lower fine slit plate 17 are smaller than the particle diameters of the upper layer ion exchange resin 3 and the lower layer ion exchange resin 8, the upper fine slit plate 10, the middle upper fine slit plate 14, the middle lower fine slit plate 16 and the lower fine slit plate 17 are all provided with reinforcing ribs, and the structures of the upper fine slit plate 10, the middle upper fine slit plate 14, the lower fine slit plate 17 and the middle lower fine slit plate 16 are the same; the aperture of the water-collecting plate 15 is determined according to the size of the whole device.
The upper layer ion exchange resin 3 and the lower layer ion exchange resin 8 are anion and cation mixed ion exchange resin, amphoteric ion exchange resin, single anion exchange resin or single cation exchange resin. The selection of the resin is determined according to the actual water quality and water production (effluent water in the treatment process) requirements.
The method is that the left end and the right end of an ion exchange resin layer are respectively provided with a positive electrode and a negative electrode, and the operation of the device is divided into two stages of treatment and regeneration; the treatment stage is the same as a common mixed bed; in the regeneration stage, high-voltage direct current is used for promoting a large amount of H on the surface of the ion exchange resin2Ionization of O molecules into H+And OH-So that the ion exchange equilibrium of the resin is shifted toward the regeneration direction, and the impurity ions desorbed from the resin are discharged from the apparatus from the top to the bottom along with the water flow in the gaps between the resin layers.
The specific treatment and regeneration process of the invention is as follows:
as shown in fig. 2 and 3, during treatment, treated water or wastewater flows in from the lower interface 9, enters the lower layer ion exchange resin 8 through the lower slit plate 17, flows sequentially pass through the lower layer ion exchange resin 8 and the middle and lower slit plates 16, then are converged by the water converging plate 15 in the middle of the device, and flow through the middle and upper slit plates 14 to be introduced into the upper layer ion exchange resin 3, so that ionic substances in the water or wastewater are effectively removed; the purified water flows through the upper slit plate 10 and finally flows out of the device through the upper connector 1.
As shown in fig. 2 and 3, during regeneration, purified water enters the upper layer ion exchange resin 3 from the upper port 1 through the upper slit plate 10 from top to bottom. The water flowing through the upper layer ion exchange resin 3 is converged and mixed by the middle upper slit plate 14, the water collecting plate 15 and the middle lower slit plate 16 in the middle of the device and is guided into the lower layer ion exchange resin 8; at the same time, a strong current perpendicular to the water flow direction is applied to the resin layer, and a large amount of H2Ionization of O molecules into H+And OH-So that the ion exchange equilibrium of the resin is shifted toward regeneration, and impurity ions are rapidly diverted from the inside of the resin to the water flow. The upper ion exchange resin 3 and the lower ion exchange resin 8 are thus regenerated with high efficiency. The water stream carrying the impurity ions passes through the lower slit plate 17 and exits the device at the lower port 9. In the regeneration process, the water collecting plate 15 can enable water flow in pores of the resin to be gathered in the middle of the device, and the water flow is fully mixed and then enters the lower-layer ion exchange resin 8 through the middle and lower slit plates 16, so that the phenomenon that ions migrate to accumulate at two sides of the electrode is effectively avoided, and the water flow at the electrodes at two sides is prevented from showing strong acidity or strong basicity during regeneration. When the ion exchange resin is filled in multiple layers, water flows through the multistage water collecting plate in the regeneration process, so that the mixing is more sufficient, and the regeneration effect is better.
Example (b):
the first-stage reverse osmosis effluent is treated by a membraneless electrodeionization device with current perpendicular to the water flow direction as shown in figure 1. The device adopts strong basic anion resin and weak acid cation resin, the two are uniformly mixed and filled in two layers, and the volume ratio of the anion resin to the acid cation resin is 2: 1, the distance between the cathode and the anode in the device is 12 cm. The conductivity of the inlet water is about 5.0 μ S/cm, the treatment time and regeneration time in one working period are respectively 80min and 20min, the treatment flow rate and regeneration flow rate are respectively 50m/h and 20m/h, and the regeneration current density is 100A/m2Under the working condition of no pole falling, the conductivity of treated effluent is between 0.060 and 0.080 mu S/cm, and the concentration generated in the regeneration processThe average conductivity of the condensate is about 49.3 mu S/cm, the water recovery rate is about 90 percent, and the required average regeneration voltage is about 180V.
Claims (7)
1. A non-membrane electrodeionization method with current perpendicular to the water flow direction is characterized in that: the method is that the left end and the right end of an ion exchange resin layer are respectively provided with a positive electrode and a negative electrode, and the operation of the device is divided into two stages of treatment and regeneration; the treatment stage is the same as a common mixed bed; in the regeneration stage, high-voltage direct current is used for promoting a large amount of H on the surface of the ion exchange resin2Ionization of O molecules into H+And OH-So that the ion exchange equilibrium of the resin is shifted toward the regeneration direction, and the impurity ions desorbed from the resin are discharged from the apparatus from the top to the bottom along with the water flow in the gaps between the resin layers.
2. A membraneless electrodeionization apparatus with current flow perpendicular to the direction of water flow for use in the method of claim 1, comprising: comprises a cubic insulation cavity body consisting of a shell (2), a left frame plate (7) with a left electrode (13) embedded in the inner side surface and a right frame plate (4) with a right electrode (18) embedded in the inner side surface; an upper fine slit plate (10), an upper layer of ion exchange resin (3), an upper middle fine slit plate (14), a water collecting plate (15), a middle lower fine slit plate (16), a lower layer of ion exchange resin (8) and a lower fine slit plate (17) are sequentially arranged in the insulating cavity from top to bottom; the shell (2) is of a cubic structure with openings at the left end and the right end, the upper end face and the lower end face of the shell (2) are respectively provided with an upper connector (1) and a lower connector (9), and one side face of the shell (2) is provided with an opening (21) and is sealed by a plug (6); titanium screws (11) and titanium nuts (12) on the two side faces of the left frame plate (7) and the right frame plate (4) are connected with cables, and are respectively connected with a left electrode (13) and a right electrode (18) of the left frame plate and the right frame plate to form a high-voltage direct-current power supply.
3. The electrodeionization apparatus of claim 2, wherein the electrodeionization apparatus comprises: inserting grooves are sequentially formed in two inner sides of the shell (2) between the left electrode (13) and the right electrode (18), and an upper thin slit plate (10), an upper middle thin slit plate (14), a water collecting plate (15), a middle lower thin slit plate (16) and a lower thin slit plate (17) are inserted into the grooves.
4. The electrodeionization apparatus of claim 2, wherein the electrodeionization apparatus comprises: the inner sides of the left frame plate (7) and the right frame plate (4) are respectively provided with a clip-shaped rubber gasket (5), and after a fastening screw (20) passes through a corresponding screw hole (22), the left frame plate (7), the right frame plate (4) and the shell (2) are connected into a detachable sealing connection by a gasket (23) and a fastening nut (19).
5. The electrodeionization apparatus of claim 2, wherein the electrodeionization apparatus comprises: the left electrode (13) and the right electrode (18) are plate-shaped, grid-shaped or net-shaped, wherein one is a cathode, and the other is an anode.
6. The electrodeionization apparatus of claim 2, wherein the electrodeionization apparatus comprises: the permeable gaps of the upper fine slit plate (10), the upper middle fine slit plate (14), the middle lower fine slit plate (16) and the lower fine slit plate (17) are smaller than the particle diameters of the upper layer ion exchange resin (3) and the lower layer ion exchange resin (8).
7. The electrodeionization apparatus of claim 2, wherein the electrodeionization apparatus comprises: the upper layer ion exchange resin (3) and the lower layer ion exchange resin (8) are anion and cation mixed ion exchange resin, amphoteric ion exchange resin, single anion exchange resin or single cation exchange resin.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114212914A (en) * | 2021-12-14 | 2022-03-22 | 宁波职业技术学院 | Method and system for recycling petrochemical wastewater |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151378A (en) * | 1995-12-05 | 1997-06-11 | 徐宝安 | Seawater desalination method and appts. thereof |
| CN2598987Y (en) * | 2003-02-28 | 2004-01-14 | 沈祖志 | Automatic controlled electric ion removing equipment |
| CN2775038Y (en) * | 2005-03-11 | 2006-04-26 | 西北电力试验研究院 | High flow speed double chamber ion exchanging device |
| CN201065348Y (en) * | 2007-07-27 | 2008-05-28 | 湖南麦克尼斯水处理科技有限公司 | EDI electric deionizing device equipped with bypass channel in concentration chamber |
| CN101259440A (en) * | 2007-12-14 | 2008-09-10 | 大连交通大学 | Electric regeneration method of non-film ion-exchange resin based on equate filter element electrode |
| CN102491461A (en) * | 2011-12-22 | 2012-06-13 | 浙江大学 | Membrane-less electrodeionization-based water softening device and water softening method therefor |
| US20190047880A1 (en) * | 2017-08-11 | 2019-02-14 | Palo Alto Research Center Incorporated | Electrochemical desalination system with coupled electricity storage |
| CN212174544U (en) * | 2020-04-10 | 2020-12-18 | 浙江大学 | Membrane-free electric deionization device with current perpendicular to water flow direction |
-
2020
- 2020-04-10 CN CN202010279050.3A patent/CN111320243A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151378A (en) * | 1995-12-05 | 1997-06-11 | 徐宝安 | Seawater desalination method and appts. thereof |
| CN2598987Y (en) * | 2003-02-28 | 2004-01-14 | 沈祖志 | Automatic controlled electric ion removing equipment |
| CN2775038Y (en) * | 2005-03-11 | 2006-04-26 | 西北电力试验研究院 | High flow speed double chamber ion exchanging device |
| CN201065348Y (en) * | 2007-07-27 | 2008-05-28 | 湖南麦克尼斯水处理科技有限公司 | EDI electric deionizing device equipped with bypass channel in concentration chamber |
| CN101259440A (en) * | 2007-12-14 | 2008-09-10 | 大连交通大学 | Electric regeneration method of non-film ion-exchange resin based on equate filter element electrode |
| CN102491461A (en) * | 2011-12-22 | 2012-06-13 | 浙江大学 | Membrane-less electrodeionization-based water softening device and water softening method therefor |
| US20190047880A1 (en) * | 2017-08-11 | 2019-02-14 | Palo Alto Research Center Incorporated | Electrochemical desalination system with coupled electricity storage |
| CN212174544U (en) * | 2020-04-10 | 2020-12-18 | 浙江大学 | Membrane-free electric deionization device with current perpendicular to water flow direction |
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Application publication date: 20200623 |