CN103896374A - Capacitive desalination device - Google Patents
Capacitive desalination device Download PDFInfo
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- CN103896374A CN103896374A CN201310050260.5A CN201310050260A CN103896374A CN 103896374 A CN103896374 A CN 103896374A CN 201310050260 A CN201310050260 A CN 201310050260A CN 103896374 A CN103896374 A CN 103896374A
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- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
A capacitive desalination device comprises a flow channel and at least one electrode module. The flow passage is provided with an inflow end and an outflow end which are opposite. The electrode module is located in the flow channel and provided with a plurality of holes. The average hole radius of the holes of the electrode module adjacent to the inflow end is smaller than that of the holes of the electrode module adjacent to the outflow end.
Description
Technical field
The invention relates to a kind of desalting plant, particularly a kind of capacitive desalination device.
Background technology
Due to the scarcity of water resources and the energy, the water recycling technology of low power consuming becomes the target that water development in science and technology is pursued gradually.Meanwhile, in order to reduce the energy and the unnecessary loss such as leak of long-distance transport water, small-sized treatment technology, for example distributed processing (decentralization) becomes the emphasis of development gradually.
The technology of water treatment can have according to the difference at water source corresponding treatment process.With desalination technology, what the most widely use at present is exactly thermal treatment and reverse osmosis.But in hinterland, because seawater is difficult for obtaining, thereby cannot supply water by sea water desaltination, therefore must carry out relevant water treatment with recycling for obtainable water source, hinterland.Most hinterland is taking rainwater as main water source, and such water source contained salinity with respect to seawater is not high.For example, the total dissolved solidss of underground water are about 10
3mg/litre (mg/L), and the total dissolved solidss of seawater are greater than 10
4mg/L.By contrast, the water source of hinterland mostly is brackish water (brackish water).
At present, reverse osmosis is the main stream approach of processing brackish water.But capacitive desalination technology (capacitive deionization, CDI) is described as has an opportunity to replace reverse osmosis most and becomes the major technique of processing brackish water.During due to use capacitive desalination technical finesse brackish water, the required energy Ratios reverse osmosis of water per ton is few, add while using capacitive desalination technical finesse brackish water, current are parallel with electrode, thereby be difficult for than reverse osmosis the problem that generation is blocked, and then also long than reverse osmosis on the work-ing life of material.In addition, the energy recovery of capacitive desalination technology is easier than reverse osmosis, constructs also simply than reverse osmosis, and uses the device of capacitive desalination also can make portable processing unit.These factors all make capacitive desalination technology in price with application on all than reverse osmosis competitive superiority.
The original shape unit that uses the earliest capacitive desalination is by Capacitive Deionization Technology in 1998
tM(CDT) manufacturing.For over ten years, the prototype of these capacitive desalination technology rests on demonstration phase always.Its reason is that water production rate and the efficiency of prototype of these capacitive desalination technology is lower.Taking the demonstration plant of CDT as example, the water production rate of the unit that its promise is large only has 0.65 ton per day, and its capacitive desalination capacity only less than 20% ratio be used in provide matter measured go out flowing water.
In order to improve water production rate, academia generally believes the electro-adsorption ability that improve electrode, namely capacitive desalination ability.Generally speaking,, in order to promote the capacitive desalination ability of electrode, can use the electrode with high specific surface area.But scientists finds that the efficiency of capacitive desalination does not have absolute positive correlation with specific surface area in recent years.Therefore the capacitive desalination ability that, how to promote electrode remains the problem that designer need to solve.
Summary of the invention
In view of above problem, the invention relates to a kind of capacitive desalination device, so as to promoting the capacitive desalination ability of electrode in capacitive desalination technology.
The disclosed capacitive desalination device of the embodiment of the present invention, comprises a runner and at least one electrode module.Runner has a relative influent stream end and and goes out stream end.Electrode module is positioned at runner, and has multiple holes.Wherein, the average hole radius that electrode module is adjacent to the hole of influent stream end is less than electrode module and is adjacent to out the average hole radius of the hole of stream end.
According to the disclosed capacitive desalination device of the invention described above embodiment, owing to being that part by having less average hole radius in electrode module is carried out capacitive desalination to having compared with the solution of high salinity, and carry out capacitive desalination by the part in electrode module with large average hole radius to having compared with the solution of Low-salinity.Whereby, make the average hole radius of electrode module coordinate electrolytical electrical double layer thickness.Therefore, although solution can make because salinity reduces the electrolytical electrical double layer thickness in solution increase, but owing to also having improved the average hole radius of electrode module thereupon, therefore can maintain can be in order to carry out the surface-area of capacitive desalination in electrode module, and can maintain the capacitive desalination ability of electrode module, and and then promote the integral capacitor desalting efficiency of capacitive desalination device.
The explanation of the above explanation about content of the present invention and following embodiment is in order to demonstration and explain principle of the present invention, and provides scope of patent protection of the present invention further to explain.
Brief description of the drawings
" Figure 1A " is the schematic diagram of the disclosed capacitive desalination device of one embodiment of the invention.
" Figure 1B " is the schematic diagram of first electrode module of " Figure 1A ".
" Fig. 1 C " is the schematic diagram of second electrode module of " Figure 1A ".
" Fig. 1 D " is the schematic diagram of first battery lead plate of " Figure 1B ".
" Fig. 1 E " is the schematic diagram of first battery lead plate of another embodiment of the present invention.
" Fig. 1 F " is the schematic diagram of first electrode module of another embodiment of the present invention.
" Fig. 1 G " is the schematic diagram of first electrode module of another embodiment of the present invention.
" Fig. 2 A " is the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.
" Fig. 2 B " is by the conductance of liquid of capacitive desalination device and the graph of a relation of time.
" Fig. 3 " is the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.
" Fig. 4 A " is the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.
" Fig. 4 B " is the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.
" Fig. 5 " is the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.
[main element nomenclature]
10-capacitive desalination device;
11-runner;
111-influent stream end;
112-goes out stream end;
12,12 ', 12 " the-first electrode module;
121, the 121 '-the first battery lead plate;
1211-hole layer;
1212-current collection layer;
1215-macromolecule layer;
123-first channel;
The 124-barrier film that insulate;
125-anion-exchange films;
126-cation-exchange films;
13-the second electrode module;
131, the 131 '-the second battery lead plate;
133-second passage;
14-third electrode module;
15-water treating module;
16-electrode module;
161,161 '-battery lead plate;
20-capacitive desalination device;
30-capacitive desalination device;
40a, 40b-capacitive desalination device;
50-capacitive desalination device.
Embodiment
In embodiment, describe below detailed features of the present invention and advantage in detail, its content is enough to make any those skilled in the art understand technology contents of the present invention and implement according to this, and according to the disclosed content of this specification sheets, claim and accompanying drawing, any those skilled in the art can understand object and the advantage that the present invention is relevant easily.Following embodiment further describes viewpoint of the present invention, but is not to limit anyways category of the present invention.
First, refer to " Figure 1A " to " Fig. 1 C ", " Figure 1A " is the schematic diagram of the disclosed capacitive desalination device of one embodiment of the invention, and " Figure 1B " is the schematic diagram of first electrode module of " Figure 1A ", and " Fig. 1 C " is the schematic diagram of second electrode module of " Figure 1A ".
The first electrode module 12 is adjacent to the influent stream end 111 of runner 11, goes out stream end 112 and the second electrode module 13 is adjacent to runner 11.Wherein, the setting of the first electrode module 12 and the second electrode module 13 is to arrange according to the salinity of solution L.Specifically,, before solution L enters the first electrode module 12, solution L has one first salinity, after leaving the first electrode module 12, solution L entering before the second electrode module 13, solution L has one second salinity, leaves after the second electrode module 13 at solution L, and solution L has one the 3rd salinity.Because the first electrode module 12 and the second electrode module 13 can be sloughed the salt in solution L, thereby the first salinity is greater than the second salinity, and the second salinity is greater than the 3rd salinity.In the present embodiment and other embodiment of part, there is corresponding first electrode module 12 with less average hole radius that arranges compared with high salinity place at solution L, there is corresponding second electrode module 13 with large average hole radius that arranges compared with Low-salinity place.Wherein, average hole radius can be obtained by nitrogen adsorption desorption curve collocation BJH (Barrett-Joyner-Halenda) pattern of electrode.Specifically, the real hole that includes different radii size of electrode module, and average hole radius refers to the volumetrically weighted average of these hole radiuses.
Furthermore, the first electrode module 12 comprises relative 2 first battery lead plates 121,121 ' and one first channel 123.The two ends of first channel 123 are connected to runner 11.The first battery lead plate 121,121 ' has multiple the first hole C1, the first hole C1 has one first average hole radius (as shown in " Figure 1B "), and the second electrode module 13 comprises relative 2 second battery lead plates 131,131 ' and one second passage 133.The two ends of second passage 133 are connected to runner 11.The second battery lead plate 131,131 ' has multiple the second hole C2, and the second hole C2 has one second average hole radius (as shown in " Fig. 1 C ").Wherein, the first average hole radius is less than the second average hole radius.That is to say, when solution L is during influent stream end 111 flow to out stream end 112, along with the salinity of solution L declines, the average hole radius of the electrode module that solution L passes through can increase.Whereby, can make the electrode module with less average hole radius to thering is the solution L desalination compared with high salinity, and the electrode module that makes to have large average hole radius is to having the solution L desalination compared with Low-salinity.
Refer to following formula, formula be about ionogen in solution because ionogen institute with electric charge, and the thickness (κ of the electrical double layer that makes ionogen and form because adsorb other charged ions
-1, Debye Length) relational expression.
Wherein, ε represents specific inductivity; k
brepresent Boltzmann's constant (Boltzmann constant); T represents absolute temperature; E represent electron institute with electric charge; Z represent ion with electric charge; n
∞represent electrolytical concentration.
Also can be learnt by above formula, when electrolytical concentration is lower, ionogen has thicker electrical double layer.Therefore, the battery lead plate in capacitive desalination device should coordinate the salinity of the want solution that carries out capacitive desalination.That is to say, if the salinity of solution is higher, can select the battery lead plate having compared with small holes.If solution is lower, can select the battery lead plate having compared with macroscopic void.
Specifically, if the hole of the battery lead plate using is less than electrolytical electrical double layer, ionogen is difficult to enter the hole of battery lead plate, and then causes the hole in battery lead plate to be difficult to ionogen to carry out capacitive desalination.Thus, even if the battery lead plate using has higher specific surface area by increasing hole, capacitive desalination device can increase not yet in order to the surface-area that carries out capacitive desalination, thereby makes the capacitive desalination efficiency of capacitive desalination device still not satisfactory.
Therefore, in embodiments of the present invention, the battery lead plate in capacitive desalination device is matched with the salinity of the want solution that carries out capacitive desalination.Furthermore, the thickness of electrolytical electrical double layer in the average hole radius conjugate solutions of battery lead plate.With the NaCl salt brine solution of the about 100ppm of concentration, according to above formula, the approximately several nanometers of the thickness of electrical double layer.Therefore, the present invention selects to have hole radius and be matched with the battery lead plate of the electrical double layer thickness of the 100ppm NaCl aqueous solution, carries out capacitive desalination.
Because the disclosed capacitive desalination module of the embodiment of the present invention is in solution L salinity lower, the battery lead plate with large average hole radius is set.Therefore, although solution L can make because salinity reduces the electrolytical electrical double layer thickness in solution L increase, but owing to also having improved the average hole radius of electrode module thereupon, therefore can maintain can be in order to carry out the surface-area of capacitive desalination in electrode module, and can maintain the capacitive desalination ability of electrode module, and and then promote the integral capacitor desalting efficiency of capacitive desalination device.
In addition, because the disclosed capacitive desalination module of the embodiment of the present invention is in the time that the salinity of solution L is lower, still can maintain desalting effect, therefore, except can be used for the purification of ordinary saline, also can be used in purchasing of ultrapure water.
In the present embodiment, the first battery lead plate 121 is to be for example connected with the positive pole of power supply, and the first battery lead plate 121 ' is for example connected with the negative pole of power supply.Whereby, so that the liquid L of the first channel 123 of flowing through is carried out to capacitive desalination.
Refer to " Fig. 1 D " and " Fig. 1 E ", " Fig. 1 D " is the schematic diagram of first battery lead plate of " Figure 1B ", and " Fig. 1 E " is the schematic diagram of first battery lead plate of another embodiment of the present invention.In the present embodiment, the first battery lead plate 121,121 ' includes respectively a hole layer 1211 and a current collection layer 1212.Hole layer 1211 includes a carbon material and a sticking agent.Carbon material has more hole and higher specific surface area, the group that the optional free activated carbon of carbon material, carbon black, Graphene, CNT (carbon nano-tube), mesoporous carbon material, carbon paste (Carbon Aerogel) etc. form.In addition, a metal oxide, for example ZnO or MnO also can be mixed in the surface of carbon material
2, so as to changing the electrical or wetting ability on carbon material surface.Sticking agent is for increasing carbon powder material tackyness each other, the optional free Teflon (Polytetrafluoroethene of sticking agent, PTFE), polyvinyl alcohol (Polyvinyl alcohol, PVA), urethane (Polyurethane, PU) group that, polyvinylidene difluoride (PVDF) (Polyvinylidene fluoride, PVDF) etc. forms.If carbon material is not powder, for example integrally formed carbon paste plate, need sticking agent.Current collection layer 1212, in order to the electroconductibility of intensifier electrode, can increase again the physical strength of carbon material simultaneously, the group that the optional free titanium plate of current collection layer 1212, graphite cake, stainless steel, alloy etc. form.If carbon material has good electroconductibility, for example integrally formed carbon paste plate, also can not use current collection layer 1212.Battery lead plate whether comprises sticking agent and current collection layer 1212 is not in order to limit the present invention.
In the present embodiment, battery lead plate passes through the activated carbon of mixed weight per-cent 90 and the polyvinylidene difluoride (PVDF) of weight percent 10, and with solvent N,N-DIMETHYLACETAMIDE (Dimethylacetamide, DMAC) furnishing slurry.Slurry is coated on to titanium plate, and dries at 80 DEG C, and make battery lead plate.Wherein, the area of every plate electrode plate is 7cm × 7cm.
In other embodiment of part of the present invention, in order to change the first battery lead plate 121,121 ' surface electrical behavior, also can be at the first battery lead plate 121,121 ' surface coated one macromolecule layer 1215 (as shown in " Fig. 1 E "), for example can select mix sulphur for succsinic acid (sulfosuccinic acid) with the composition of polyvinyl alcohol as the macromolecule layer with cation selective, be coated on the surface of the battery lead plate 121 ' that connects negative pole, and can promote again the desalting efficiency of capacitive desalination device entirety.
To the first electrode module in capacitive desalination device 10 be introduced in more detail below.Refer to " Fig. 1 F ", " Fig. 1 F " is the first electrode module schematic diagram of another embodiment of the present invention.In part embodiment of the present invention, the first electrode module 12 ' also can comprise an insulation barrier film 124, between the first battery lead plate 121,121 '.Whereby, can make to keep a distance between the first battery lead plate 121 and the first battery lead plate 121 ', to avoid the first battery lead plate 121 contact and cause short circuit with the first battery lead plate 121 '.Wherein, insulation barrier film 124 is such as but not limited to nylon wire.
Refer to " Fig. 1 G ", " Fig. 1 G " is the schematic diagram of first electrode module of another embodiment of the present invention.In order to promote the capacitive desalination efficiency of capacitive desalination device entirety, also can between battery lead plate 121 and insulation barrier film 124 and between the first battery lead plate 121 ' and insulation barrier film 124, an anion-exchange films 125 and a cation-exchange films 126 be set respectively, whereby to limit the movement of effects of ion, and negative ion can be confined near a side that connects anodal battery lead plate 121, and positive ion is confined to the side near the battery lead plate 121 ' of connection negative pole.Wherein, anion-exchange films 125 is such as but not limited to Neosepta AMX (Astom Corp., Japan), and cation-exchange films 126 is such as but not limited to Neosepta CMX (Astom Corp., Japan).
In addition, the second battery lead plate 131 of the second electrode module 13,131 ' preparing process and set-up mode and the first electrode module 12 are same or similar, therefore repeat no more.
Then, refer to " Fig. 2 A ", " Fig. 2 A " is the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.Because the embodiment of " Fig. 2 A " is similar to the embodiment of " Figure 1A ", wherein identical label is representing and the same or similar element of embodiment of " 1A figure ", therefore only explains for difference.
In the present embodiment, capacitive desalination device 20 also can comprise a third electrode module 14, is arranged between the first electrode module 12 and the second electrode module 13.Third electrode module 14 has multiple the 3rd holes, and these the 3rd holes have one the 3rd average hole radius.Wherein, the 3rd average hole radius is more than or equal to the first average hole radius, and the 3rd average hole radius is less than or equal to the second average hole radius.In the present embodiment, the 3rd average hole radius is greater than the first average hole radius, and the 3rd average hole radius is less than the second average hole radius.But not as limit, in other embodiment of part, the 3rd average hole radius can be more than or equal to the first average hole radius, or the 3rd average hole radius is less than or equal to the second average hole radius, as long as the first average hole radius is less than the second average hole radius, can increase the capacitive desalination efficiency of capacitive desalination device entirety.Should be noted, other constitutional featuress (being the feature beyond average hole radius) of third electrode module 14 and the first electrode module 12 are same or similar, therefore repeat no more.
Should be noted, the number of electrode module is three in the present embodiment, but the number of electrode module is not in order to limit the present invention, and user can adjust according to its demand the number of electrode module.
Below will test the capacitive desalination ability of the capacitive desalination device of different distributing styles (with average hole radius).Refer to " Fig. 2 B ", " Fig. 2 B " is by the conductance of liquid of capacitive desalination device and the graph of a relation of time.Wherein, (a) the capacitive desalination device that, (b), (c) connect for three groups of electrode modules, and (a), (b), (c) are in series by two kinds of electrode module E1, E2 with different average hole radius respectively, wherein, the average hole radius ratio electrode module E2 of electrode module E1 is little, and the specific surface area of electrode module E1 is larger than electrode module E2.In the capacitive desalination device of (a), its order is sequentially E1-E1-E1 by influent stream end to going out stream end.In the capacitive desalination device of (b), its order is E1-E1-E2.In the capacitive desalination device of (c), its order is E2-E2-E2.The liquid that carries out experiment test is the sodium chloride aqueous solution of 100ppm (part per million, 1,000,000/), and flow velocity is 10 ml/min, 1.0 volts of absorption voltages, 0.0 volt of desorption voltage.
The specific surface area of electrode module E1 and electrode module E2 and average hole radius are as shown in the table.
| Carbon material | Specific surface area (square centimeter/g) | Average hole radius (nm) |
| E1 | 963.91 | 1.05 |
| E2 | 714.24 | 1.37 |
From " Fig. 2 B ", (a) capacitive desalination device and (c) only has less than 10% desalination capacity in order to the solution of Low-salinity to be provided, and capacitive desalination device (b) has 50% desalination capacity in order to the solution of Low-salinity to be provided.Wherein, although the capacitive desalination device of the surface area ratio (b) of capacitive desalination device (a) is large, but because the capacitive desalination device of (b) is along with the density loss of solution increases the average hole radius that electrode module has, therefore the capacitive desalination device of (b) has the capacitive desalination efficiency better than the capacitive desalination device of (a).
Then, refer to " Fig. 3 ", " Fig. 3 " is the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.Because the embodiment of " Fig. 3 " is similar to the embodiment of " Figure 1A ", wherein identical label is representing and the same or similar element of embodiment of " 1A figure ", therefore only explains for difference.
In the embodiment of " Fig. 3 ", capacitive desalination device 30 also can comprise a water treating module 15, is arranged between the first electrode module 12 and the second electrode module 13, can further promote whereby the capacitive desalination efficiency of capacitive desalination device 30 entirety again.Wherein, water treating module 15 is for example a membrane filtration device (being for example reverse osmosis equipment), ion exchange resin (being for example the combination of Zeo-karb, anionite-exchange resin or Zeo-karb and anionite-exchange resin), activated carbon adsorption bed or aforesaid combination.Whereby, can reduce the working load of the first electrode module 12, the second electrode module 13, or increase the work-ing life of capacitive desalination device 30 entirety.
Then, refer to " Fig. 4 A " and " Fig. 4 B ", " Fig. 4 A " and " Fig. 4 B " is respectively the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.Because the embodiment of " Fig. 4 A ", " Fig. 4 B " is similar to the embodiment of " Figure 1A ", wherein identical label is representing and the same or similar element of embodiment of " Figure 1A ", therefore only explains for difference.
In the present embodiment, capacitive desalination device 40a, 40b also can comprise a third electrode module 14 and a water treating module 15.
In the embodiment of " Fig. 4 A ", water treating module 15 is arranged between the first electrode module 12 and third electrode module 14.In the embodiment of " Fig. 4 B ", water treating module 15 is arranged between the second electrode module 13 and third electrode module 14.By between the first electrode module 12 and the second electrode module 13, water treating module 15 being set, can further promote again respectively capacitive desalination efficiency or the life-span of capacitive desalination device 40a, 40b entirety.
Should be noted, the mode of carrying out capacitive desalination by multi-group electrode module is not in order to limit the present invention.Refer to " Fig. 5 ", " Fig. 5 " is the schematic diagram of the disclosed capacitive desalination device of another embodiment of the present invention.Because the embodiment of " Fig. 5 " is similar to the embodiment of " the 1st figure ", wherein identical label is representing and the same or similar element of embodiment of " Figure 1A ", therefore only explains for difference.
In the embodiment of " Fig. 5 ", capacitive desalination device 50 comprises a runner 11 and an electrode module 16.Runner 11 has a relative influent stream end 111 and and goes out stream end 112.Electrode module 16 comprises relative two battery lead plates 161,161 ', and battery lead plate 161,161 ' average hole radius change along with runner 11.
Specifically, battery lead plate 161,161 ' is positioned at influent stream end 111 and has respectively multiple the first hole D1, and these first holes D1 has one first average hole radius.On the other hand, battery lead plate 161,161 ' is positioned at stream end 112 and has respectively multiple the second hole D2, and these second holes D2 has one second average hole radius.Wherein, the first average hole radius is less than the second average hole radius.
In more detail, in the present embodiment, from influent stream end 111, to going out stream end 112, battery lead plate 161,161 ' average hole radius constantly become large.That is to say, as long as choose two region P1, P2 on battery lead plate 161,161 ', as long as region P2 than region P1 more approaching go out stream end 112, the average hole radius that the average hole radius that region P2 has will have than P1 is large.Whereby, can make part that battery lead plate has less average hole radius to thering is the solution L desalination compared with high salinity, and make part that battery lead plate has large average hole radius to thering is the solution L desalination compared with Low-salinity, thereby can promote the capacitive desalination ability of capacitive desalination device 50 for the solution L of Low-salinity, and can increase the capacitive desalination efficiency of capacitive desalination device 50 entirety.
Claims (10)
1. a capacitive desalination device, is characterized in that, comprises:
One runner, has a relative influent stream end and and goes out stream end; And
At least one electrode module, is positioned at this runner, and has multiple holes;
Wherein, the average hole radius that this at least one electrode module is adjacent to those holes of this influent stream end is less than this at least one electrode module and is adjacent to this and goes out the average hole radius of those holes of stream end.
2. capacitive desalination device according to claim 1, wherein this at least one electrode module comprises one first electrode module and one second electrode module, this first electrode module is adjacent to this influent stream end, this second electrode module is adjacent to this and goes out stream end, those holes comprise multiple the first holes and multiple the second hole, those first holes are positioned at this first electrode module, those first holes have one first average hole radius, those second holes are positioned at this second electrode module, those second holes have one second average hole radius, this first average hole radius is less than this second average hole radius.
3. capacitive desalination device according to claim 2, wherein this at least one electrode module separately comprises a third electrode module, this third electrode module is between this first electrode module and this second electrode module, those holes separately comprise multiple the 3rd holes, those the 3rd holes are positioned at this third electrode module, those the 3rd holes have one the 3rd average hole radius, the 3rd average hole radius is more than or equal to this first average hole radius, and the 3rd average hole radius is less than or equal to this second average hole radius.
4. capacitive desalination device according to claim 2, separately comprise at least one water treating module, this at least one water treating module goes out between stream end between this influent stream end and this, and this at least one water treating module is membrane filtration device, ion exchange resin, activated carbon adsorption bed or aforesaid combination.
5. capacitive desalination device according to claim 2, separately comprise at least one water treating module, this at least one water treating module is between this first electrode module and this second electrode module, and this at least one water treating module is membrane filtration device, ion exchange resin, activated carbon adsorption bed or aforesaid combination.
6. capacitive desalination device according to claim 1, wherein this at least one electrode module comprises two relative battery lead plates, those holes comprise multiple the first holes and multiple the second hole, those first holes are positioned at this two battery lead plate and are adjacent to this influent stream end, those first holes have one first average hole radius, those second holes are positioned at this two battery lead plate and are adjacent to this and go out stream end, those second holes have one second average hole radius, and this first average hole radius is less than this second average hole radius.
7. capacitive desalination device according to claim 1, wherein this at least one electrode module comprises two relative battery lead plates, and each this battery lead plate comprises a hole layer.
8. capacitive desalination device according to claim 7, wherein each this battery lead plate separately comprises a current collection layer, and this two holes layer lays respectively at this two current collection layer, and the material of each this hole layer comprises the group being made up of carbon material, sticking agent and metal oxide etc.
9. capacitive desalination device according to claim 7, is characterized in that, separately comprises an insulation barrier film, between this two battery lead plate.
10. capacitive desalination device according to claim 9, wherein between this two battery lead plate and this insulation barrier film, separately comprise an ion exchange membrane, or wherein this two battery lead plate is separately coated with a macromolecule layer with ion selectivity on the surface near this insulation barrier film.
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| TW101149850 | 2012-12-25 | ||
| TW101149850A TWI460135B (en) | 2012-12-25 | 2012-12-25 | Capacitive deionization device |
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| EP4242178A4 (en) * | 2020-11-06 | 2024-05-01 | Daido Metal Company Ltd. | Cdi device |
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| WO2001089656A1 (en) * | 2000-05-22 | 2001-11-29 | Abb Power T & D Company Inc. | Capacitive deionization cell power supply |
| CN201099635Y (en) * | 2007-10-17 | 2008-08-13 | 南京中电联环保工程有限公司 | Capacitance type desalinisation equipment |
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| TWI527764B (en) * | 2010-07-29 | 2016-04-01 | 奇異電器公司 | Water treatment device and method |
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| WO2001089656A1 (en) * | 2000-05-22 | 2001-11-29 | Abb Power T & D Company Inc. | Capacitive deionization cell power supply |
| CN201099635Y (en) * | 2007-10-17 | 2008-08-13 | 南京中电联环保工程有限公司 | Capacitance type desalinisation equipment |
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| EP4242178A4 (en) * | 2020-11-06 | 2024-05-01 | Daido Metal Company Ltd. | Cdi device |
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| TWI460135B (en) | 2014-11-11 |
| TW201425234A (en) | 2014-07-01 |
| CN103896374B (en) | 2015-12-02 |
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