CN104147933A - Electrochemical separating device and use method thereof - Google Patents
Electrochemical separating device and use method thereof Download PDFInfo
- Publication number
- CN104147933A CN104147933A CN201310179970.8A CN201310179970A CN104147933A CN 104147933 A CN104147933 A CN 104147933A CN 201310179970 A CN201310179970 A CN 201310179970A CN 104147933 A CN104147933 A CN 104147933A
- Authority
- CN
- China
- Prior art keywords
- runner
- light chamber
- chamber
- entrance
- dense
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
- B01D61/46—Apparatus therefor
- B01D61/50—Stacks of the plate-and-frame type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/08—Flow guidance means within the module or the apparatus
- B01D2313/086—Meandering flow path over the membrane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/14—Specific spacers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2313/00—Details relating to membrane modules or apparatus
- B01D2313/30—Specific dilution or de-ionizing chambers
Landscapes
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Urology & Nephrology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to an electrochemical separating device. The electrochemical separating device comprises a pair of electrodes and at least one desalting chamber separation net between the electrodes. By virtue of the desalting chamber separation net, a desalting chamber is formed; the desalting chamber comprises an inlet through which a to-be-treated solution enters, an outlet through which the diluted solution is output, and a desalting chamber runner for communicating the inlet with the outlet. The width of the desalting chamber runner is gradually reduced from the inlet to the outlet roughly along the flowing direction, or the desalting chamber runner is a meandering runner which is formed by means of connecting longitudinal runner segments in series via a runner turning part, the width of each longitudinal runner segment is gradually reduced from the inlet to the outlet roughly along the flowing direction.
Description
Technical field
The present invention relates to the using method of a kind of Electrochemical separation device and this Electrochemical separation device.
Background technology
The electrochemical process such as electrodialysis, pole-reversing electroosmosis and the processing of ultracapacitor desalinating desalting are widely used in the separation processes such as the desalting processing of solution.In Electrochemical separation process, taking electrodialysis as example, when material (as, the pending aqueous solution) flows in He Dan chamber, dense chamber, under the effect of DC electric field, the solute ions generation directional migration in solution.Between amberplex and solution, there is a detention layer, in the time that operating current is increased to a certain degree, ion in solution can not add to rapidly the surface of film, the ion concentration on film surface is gone to zero, cause in detention layer that the ionization of large quantity of moisture generates H+ and OH-ion carrys out load electric charge, this phenomenon is called polarization.Current density now has also reached a limiting value, and this value is called limiting current density.Once generation polarization phenomena, will cause that film surface produces precipitation, film resistance obviously increases, and current efficiency, salt rejection rate also can decline thereupon, cause producing water quality and reduce, and also can shorten the service life of electrodialysis membrane stack.Therefore,, in order to prevent the generation of polarization phenomena, should guarantee that the operating current of electrodialysis membrane stack is not higher than this carrying current value.But, because operating current is restricted, single electrodialysis is difficult to obtain very high salt rejection rate, therefore current electrodialysis process often adopts the mode of multistage membrane stack series connection to carry out desalinating desalting processing, such as, for reaching the salt rejection rate of 85% left and right, often need to adopt electrodialysis plant and the system of 3 or the series connection of above membrane stack.The use of multistage membrane stack has increased the cost of Electrochemical separation device, makes Electrochemical separation method not have cost advantage compared with reverse osmosis membrane.
If can improve the carrying current that single membrane stack can bear, thereby improve the desalinating desalting efficiency of single membrane stack, reduce needed membrane stack progression in desalinating desalting processing procedure, such as, membrane stack with 2 series connection obtains and original 3 grades for the treatment of effeciencies that the membrane stack of connecting is suitable, can reduce widely the cost of Electrochemical separation method.
Summary of the invention
An aspect of of the present present invention provides a kind of Electrochemical separation device, and it comprises pair of electrodes and at least one the light chamber filter between described electrode.Described light chamber filter provides a light chamber, and this light chamber comprises the entrance that allows pending solution enter, allows through desalinating the outlet of solution output after treatment and being communicated with the light chamber runner of described entrance and exit.The width of described light chamber runner roughly reduces gradually along flow direction from described entrance to outlet.
Another aspect of the present invention provides a kind of Electrochemical separation device, and it comprises pair of electrodes and at least one the light chamber filter between described electrode.Described light chamber filter provides a light chamber, and this light chamber comprises the entrance that allows pending solution enter, allows through desalinating the outlet of solution output after treatment and being communicated with the light chamber runner of described entrance and exit.。Described light chamber runner comprises longitudinal runner section and runner turning part, and runner turning part is by longitudinal runner section formation serpentine flow-channels that is together in series, and the width of wherein said longitudinal runner section roughly reduces gradually along flow direction from described solution entrance to outlet.
Another aspect of the present invention provides a kind of solution-treated method, in the method, a kind of Electrochemical separation device is provided, it comprises pair of electrodes and at least one the light chamber filter between described electrode, described light chamber filter provides a light chamber, this light chamber comprises the entrance that allows pending solution enter, allows through desalinating the outlet of solution output after treatment and being communicated with the light chamber runner of described entrance and exit, and the width of this light chamber runner roughly reduces gradually along flow direction from described entrance to outlet.Pending solution is inputted to light chamber from the entrance of described light chamber, make its outlet that flows to light chamber along light chamber runner, the anion in this process in solution and cation move to anode and cathode direction in described electrode respectively.Then collect fresh water from the taphole of light chamber.
One side more of the present invention provides a kind of solution-treated method, in the method, a kind of electrochemical appliance is provided, it comprises pair of electrodes, and at least one light chamber filter between described electrode, described light chamber filter provides a light chamber, this light chamber comprises the entrance that allows pending solution enter, allow through desalinating the outlet of solution output after treatment, and be communicated with the light chamber runner of described entrance and exit, this light chamber runner comprises longitudinal runner section and runner turning part, described runner turning part is by described longitudinal runner section formation serpentine flow-channels that is together in series, the width of wherein said longitudinal runner section roughly reduces gradually along flow direction from described solution entrance to outlet.Pending solution is inputted to light chamber from the entrance of described light chamber, make its outlet that flows to light chamber along light chamber runner, the anion in this process in solution and cation move to anode and cathode direction in described electrode respectively.Then collect fresh water from the taphole of light chamber.
Brief description of the drawings
Be described for embodiments of the invention in conjunction with the drawings, the present invention may be better understood, in the accompanying drawings:
Schematic diagram in Fig. 1 has shown a kind of Electrochemical separation device in the embodiment of the present invention.
Fig. 2 has shown the Move Mode of yin, yang ion in the dense chamber of the Electrochemical separation device shown in Fig. 1 and light indoor solution.
Fig. 3 A has shown the light chamber of the one filter that can be used for Electrochemical separation device of the present invention; Fig. 3 B and 3C have shown respectively two kinds of dense chamber filters of the light chamber filter use that can coordinate shown in Fig. 3 A.
Fig. 4 A and 4B have shown respectively the light chamber of the another kind filter that can be used for Electrochemical separation device of the present invention and the dense chamber of the one filter that can coordinate this light chamber filter.
Fig. 5 A and 5B have shown respectively another the light chamber filter that can be used for Electrochemical separation device of the present invention and the dense chamber of the one filter that can coordinate this light chamber filter.
Inlet/outlet when Fig. 6 has shown the dense chamber filter shown in Fig. 4 A and 4B and light chamber filter for a kind of Electrochemical separation device on it and the corresponding relation of pore.
Schematic diagram in Fig. 7 has shown the another kind of Electrochemical separation device in the embodiment of the present invention
Fig. 8 has shown respectively and to have carried out the voltage-to-current curve in the process of solution-treated with Electrochemical separation device that the width of flow path that the uniform Electrochemical separation device of width of flow path and the embodiment of the present invention provide reduces gradually.
Detailed description of the invention
The language of approximation used herein can be used for quantitative expression, shows can allow quantity to have certain variation in the situation that not changing basic function.Therefore, be not limited to this accurate numerical value itself with the numerical value that the language such as " approximately ", " left and right " are revised.In certain embodiments, " approximately " represents to allow the numerical value of its correction to change in positive and negative 10 (10%) scope, such as, what " about 100 " represented can be any numerical value between 90 to 110.In addition,, in the statement of " about the first numerical value is to second value ", revise two numerical value of the first and second numerical value approximately simultaneously.In some cases, approximation language may be relevant with the precision of measuring instrument.
In the present invention, mentioned numerical value comprises all numerical value that Yi Ge unit, a unit increases from low to high, supposes unit, at least two, interval between any lower value and high value herein.For instance, if the quantity of a component or the value of a technological parameter, such as, temperature, pressure, time etc., is from 1 to 90,20 to 80 better, 30 to 70 the bests, to want to express being set forth in this description that 15 to 85,22 to 68,43 to 51,30 to 32 numerical value such as grade have all understood.For the numerical value that is less than 1,0.0001,0.001,0.01 or 0.1 is considered to a more suitable unit.Previous example is the use of explanation for example only, in fact, allly is all regarded as being clearly listed as in this manual in a similar manner in the minimum combinations of values between peak of enumerating.
Outside definition, technology used herein and scientific terminology have the identical meanings of generally understanding with those skilled in the art of the invention.Term used herein " first ", " second " etc. do not represent any order, quantity or importance, and just for distinguishing a kind of element and another kind of element.And " one " or " one " does not represent the restriction of quantity, but represent to exist the relevant item of.
As shown in Figure 1, the embodiment of the present invention provides a kind of Electrochemical separation device 100, it comprises pair of electrodes (negative electrode 102 and anode 104) and the membrane stack 106 between electrode, this membrane stack 106 comprises and replaces stacking anion-exchange membrane 108, cation-exchange membrane 110 and be positioned at described the moon, filter between cation-exchange membrane, these filters are divided into dense chamber filter 112 and light chamber filter 114, alternately be placed between described amberplex, so that keep certain interval between described amberplex, alternately form 116He Dan chamber, dense chamber 118, respectively as the passage of dense water and fresh water.
As shown in Figure 2, under the state of electrifying electrodes, pending solution or fluid (being referred to as below solution) can be passed in 116He Dan chamber, described dense chamber 118, when solution is in 116He Dan chamber 118, described dense chamber in mobile process, under the effect of electric field, cation in solution moves towards the direction of negative electrode 102, and anion moves towards the direction of anode 104.Because a side of the close negative electrode 102 in light chamber 118 is anion-exchange membrane 108, and its side near anode 104 is cation-exchange membrane 110, therefore the anion in the interior mobile solution in light chamber 118 and cation see through respectively anion-exchange membrane 108 and cation-exchange membrane 110 and enter into the interior mobile solution in adjacent dense chamber 116.Along with flowing of solution, ion in the interior solution in light chamber 118 constantly exchanges in adjacent dense chamber and goes, and the effects of ion content in light chamber 118 is reduced gradually, thereby reaches the effect of desalinating desalting, effects of ion content in dense chamber 116 increases gradually simultaneously, forms concentrated water drainage and goes out.
Described filter can be one and has on the whole the roughly tablet of uniform thickness, it comprises at least part of grid or mesh-like structure, this grid or mesh-like structure can allow solution from wherein passing through, thereby form the runner of solution, i.e. dense chamber runner and (or) light chamber runner.Described filter can be made up of plastic or other material, and suitable material includes but not limited to polypropylene (PP) and Kynoar (PVDF).In certain embodiments, the thickness of described filter is greatly in the scope of 0.5 to 2.0 millimeter.
The embodiment of the present invention is by the design to light chamber filter 114, can make the width of light chamber runner roughly reduce gradually along flow of solution direction, thereby allow the ion concentration in the interior mobile solution in light chamber 116 not reduce gradually with the direction of flow of solution, but remain on a roughly state stable or that increase gradually.
Fig. 3 A has shown the light chamber filter 212 in a kind of membrane stack that can be used for described Electrochemical separation device 100.In one embodiment, on described light chamber filter 212 is as a whole, there is the roughly tablet of uniform thickness, such as, can be plastics lamellar body.This light chamber filter 212 comprises the pore 216 and 218 and be communicated with the light chamber runner 220 that described entrance 216 and outlet 218 grid or mesh-like structure form of the entrance and exit that is used separately as light chamber, and the width of this runner 220 roughly reduces parts such as (except) junctions of runner 220 and entrance 216 and outlet 218 gradually along the flow of solution direction from solution entrance 216 to taphole 218.
Wherein, width of flow path as herein described refer to the flow of solution of runner in the thickness and the runner that are approximately perpendicular to filter to direction on size.In this paper embodiment, the width of the coupling part of runner and solution entrance and exit may be less than the width of runner other parts, because it only accounts for the ratio that whole flow channel length is very little, does not affect whole width of flow path roughly along flowing to the situation reducing gradually.Particularly, " width of flow path roughly reduces gradually along flow of solution direction in it " as referred to herein, and the width that does not require whole continuous runner constantly reduces along flow of solution direction, and refer to the main part of runner, such as, flow channel length more than 50% is that width reduces gradually along flow of solution direction.In a specific embodiment, the more than 60% of flow channel length, or further, more than 70%, more than 80% or 90% above be that width reduces gradually along flow of solution direction.In addition, " reducing gradually " as referred to herein also and do not require continuously and reduce, but allows local small size fluctuation under the trend roughly reducing in entirety.Such as, in certain embodiments, if the edge of described runner 220 can not be linear, but indentation or corrugated, in the case, the width of runner presents local small fluctuations between adjacent sawtooth or ripple.
Different from light chamber runner, whether the electrochemical appliance in the present embodiment reduces not require along the flow direction of solution in it to the width of dense chamber runner gradually, the dense chamber runner corresponding with described light chamber runner 220 can be consistent with light chamber runner 220 on width, also can be inconsistent.Such as, in one embodiment, as shown in Figure 3 B, the dense chamber filter 214 being used in conjunction with light chamber filter 212 comprises the pore 226 and 228 and be communicated with described entrance 226 and outlet 228 the dense chamber runner 230 being formed by grid or mesh-like structure of the entrance and exit that is used separately as dense chamber, wherein this dense chamber runner 230 is corresponding consistent with described light chamber runner 220 on width, and width is roughly along reducing gradually from entrance 226 to the flow of solution direction of outlet 228.In another embodiment, as shown in Figure 3 C, the dense chamber filter 244 being used in conjunction with light chamber filter 212 comprises the pore 246 and 248 and be communicated with described entrance 246 and outlet 248 the dense chamber runner 250 being formed by grid or mesh-like structure of the entrance and exit that is used separately as dense chamber, wherein this dense chamber runner 250 is not corresponding consistent with described light chamber runner 220 on width, and its width remains unchanged substantially along flow direction.
In addition, described light chamber filter 212 as shown in Figure 3A also comprises respectively and dense chamber filter 214(244) on dense chamber inlet 226(246) and outlet 228(248) corresponding a pair of pore 222 and 224, it is not communicated with the runner 220 on this filter, can be respectively and dense chamber filter 214(244 but form after membrane stack in assembling) on entrance 226(246) and export 228(248) communicate.Described light chamber filter 214 comprises respectively a pair of pores 232 and 234 corresponding with light chamber inlet 216 on light chamber filter 212 and outlet 218, it is not communicated with the runner 230 on this filter, but can communicate with entrance 216 and outlet 218 on light chamber filter 212 respectively after assembling forms membrane stack.Similarly, described light chamber filter 244 also comprises respectively a pair of pores 252 and 254 corresponding with light chamber inlet 216 on light chamber filter 212 and outlet 218, it is not communicated with the runner 250 on this filter, but can communicate with entrance 216 and outlet 218 on light chamber filter 212 respectively after assembling forms membrane stack.
Described light chamber runner, meeting its width roughly along flowing under the condition reducing gradually, can have any suitable shape, such as, it can be or roundabout serpentine flow-channels bending with any suitable form.Shown in Fig. 4 A, the light chamber runner that the grid in light chamber filter 312 or mesh-like structure provide be one by runner turning part by longitudinal runner section serpentine flow-channels forming of connecting.This light chamber filter 312 comprises the pore 316 and 318 and be communicated with described entrance 316 and outlet 318 light chamber runner 320 that is used separately as light chamber inlet and outlet, and this runner 320 comprises two longitudinal runner sections 323 being separated by flank 321 and 325 and be communicated with the runner turning part 327 of these two longitudinal runner sections.
In certain embodiments, except the junction of runner 320 and entrance 316 and outlet 318, the width of the remainder of described runner 320 (comprising longitudinal runner section 323, runner turning part 327 and longitudinal runner section 325) reduces gradually along flowing to.
In certain embodiments, except the junction and runner turning part 327 of runner 320 and entrance 316 and outlet 318, the remainder of described runner 320, the width of two longitudinal runner sections 323 and 325 reduces gradually along flowing to.Wherein, in certain embodiments, the width of described whole runner turning part 327 can remain unchanged by streamwise substantially.In the time that a runner has multiple runners turning part, the plurality of runner turning part can have identical or different width.In a specific embodiment, described in each, the width of runner turning part 327 is with from two ends, coupled longitudinal runner section 323 is consistent with 325 at the width of coupled part respectively.In a specific embodiment, the width of described runner turning part 327 is less than the width of longitudinal runner section 323 and 325 coupled parts, to allow the solution in runner keep larger flow velocity when through this turning part 327, thereby avoids occurring dead angle.Or further, described runner turning part 327 can be less than the minimum widith of longitudinal runner section 323 and 325.
Similarly, the dense chamber runner corresponding with described light chamber runner 320 can be consistent with light chamber runner 320 on width, also can be inconsistent.In a specific embodiment, as shown in Figure 4 B, the dense chamber filter 314 being used in conjunction with light chamber filter 312 comprises the pore 326 and 328 and be communicated with described entrance 326 and outlet 328 dense chamber runner 330 that is used separately as dense chamber inlet and outlet, and this runner 330 is corresponding consistent with light chamber runner 320.
In addition, described light chamber filter 312 also comprises a pair of pore 322 and 324, and it is not communicated with the runner 320 on this filter, but can communicate with dense chamber inlet 326 and outlet 328 on dense chamber filter 314 respectively after assembling forms membrane stack.Similarly, described dense chamber filter 314 also comprises a pair of pore 332 and 334 respectively, and it is not communicated with the runner 330 on this filter, but can communicate with light chamber inlet 316 and outlet 318 on light chamber filter 312 respectively after assembling forms membrane stack.
Wherein, the quantity of longitudinal runner section of connecting in serpentine flow-channels is unrestricted, and it can be 2 or 2 above any amount.Such as, in a pair of light chamber filter 412 and dense chamber filter 414 as shown in Figure 5 A and 5B, runner is the serpentine flow-channels being formed by three longitudinal runner section series connection.The width setting of this serpentine flow-channels can with the embodiment shown in Fig. 4 A and 4B in situation similar.
In the above-described embodiments, the described width of flow path reducing gradually can be reduce gradually linearly along flow of solution direction in runner or roughly reduce gradually linearly.
Below by the light chamber filter 312 taking as shown in Fig. 4 A and 4B and dense chamber filter 314 as example, corresponding relation when its membrane stack for Electrochemical separation device 100 is described between its each pore.As shown in Figure 5, light chamber filter 312 and dense chamber filter 314 are alternately arranged, in order to make figure more clear succinct, one group of dense chamber filter of alternately arranging and light chamber filter in figure, are only schematically shown, i.e. two dense chamber filters and a light chamber filter, and omit other elements and the structure of membrane stack, but it will be understood by those skilled in the art that in membrane stack and can comprise many groups of dense chamber filters of alternately arranging and light chamber filter.As shown in Figure 5, entrance 326 on dense chamber filter 314 is relative with the pore 322 on light chamber filter 312, outlet 328 on dense chamber filter 314 is relative with the pore 322 on light chamber filter 312, pore 332 on dense chamber filter 314 is relative with the entrance 316 on light chamber filter 312, and the pore 334 on dense chamber filter 314 is relative with the outlet 318 on light chamber filter 312.Described relative inlet/outlet and pore can share same pipeline (not shown).In a specific embodiment, the pipeline of available connection entrance 326 and pore 322 is inputted solution in the runner in dense chamber filter 314, in the runner in light chamber filter 312, input solution with the pipeline that is communicated with pore 332 and entrance 316, with being communicated with outlet 328 and the pipeline of pore 324, the dense water of discharging in the runner in dense chamber filter 314 is collected to output, and with being communicated with pore 334 and exporting 318 pipeline, the fresh water of output in the runner in light chamber filter 312 is collected to output.Wherein, can in the runner in described dense chamber filter 314 and light chamber filter 312, all input pending solution, also can be to the input solution different from pending solution in the runner of dense chamber filter 314.
In a specific embodiment, carry out in the process of solution-treated at the described Electrochemical separation device of use, pending solution is passed to light chamber and dense indoor runner from the solution entrance of He Nong chamber, described light chamber, process at described solution along runner from from solution inlet streams to taphole, the ion in the solution of light indoor moveable enters into the solution of dense indoor moveable through adjacent amberplex.Then can collect fresh water and dense water from the taphole of He Nong chamber, light chamber respectively.
Along with flowing of solution, ion in the interior mobile solution of light chamber runner is transferred in dense chamber gradually, total dissolved solids (TDS) (Total Dissolved Solids in solution in the runner of light chamber, TDS) can reduce gradually along its flow direction, also the total ion concentration in ie in solution can reduce gradually along flow direction.Width of flow path in the membrane stack providing due to the embodiment of the present invention reduces gradually along flow direction, although therefore the total dissolved solids (TDS) in the solution of light indoor moveable reduces gradually along its flow direction, ion concentration in solution can't reduce gradually along flow direction, likely increases gradually on the contrary.And because width of flow path reduces gradually along flow direction, in it, the flow velocity of solution will increase along flow direction haply gradually.The limiting current density of Electrochemical separation device is to be decided by the minimum position of ionic flux (ion concentration × flow velocity).The concentration of ion increases, and the motive force of ion concentration difference diffusion in the detention layer of film surface increases, and the transfer rate of ion in film increases, and therefore limiting current density can increase with the increase of concentration.In addition, the increase of flow velocity also will cause limiting current density to increase.And the increase of limiting current density can improve the salt rejection rate of Electrochemical separation device.Therefore, compare the uniform Electrochemical separation device of width of flow path, the salt rejection rate of the Electrochemical separation device that the embodiment of the present invention provides obtains and significantly improves.
Except the Electrochemical separation device 100 for as illustrated in fig. 1 and 2, the various light chamber filter described in previous embodiment also can be used for any other need to use the Electrochemical separation device of light chamber filter.Such as, in super capacitor desalter 500 as shown in Figure 7, the filter 506 between negative electrode 502 and anode 504 can be just the various light chamber filter described in previous embodiment.
Comparative example:
In a comparative experiments, adopted light chamber filter that the width of flow path as shown in Fig. 4 A of the present invention and 4B reduces gradually and the Electrochemical separation device of dense chamber filter to be respectively used to solution separating treatment a uniform traditional electrical chemical separating arrangement of width of flow path and one, the amberplex that these two kinds of Electrochemical separation devices adopt and the size of filter are roughly the same.In this experiment, adopt titanium electrode and thickness to be about the water channel filter of 0.76 millimeter, electrode solution is the sodium sulphate (Na of 1% percentage by weight
2sO
4) aqueous solution, separating treatment be that electrical conductivity is sodium chloride (NaCl) aqueous solution of 1200uS/cm, porch flow velocity is 0.2L/min.The voltage-to-current curve that experiment obtains as shown in Figure 8, wherein, adopts the limiting current density of the Electrochemical separation device of the uniform runner of width to be about 1.8mA/cm
2, and the limiting current density of the Electrochemical separation device of the runner that employing width reduces is gradually about 2.1mA/cm
2, increased approximately 15%.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention or principal character.Therefore, no matter from which point, above-mentioned embodiment of the present invention all can only think explanation of the present invention can not limit the present invention, scope of the present invention is to be defined by claims, instead of defined by above-mentioned, therefore, any change in implication and the scope suitable with claims of the present invention, all should think to be included in the scope of claims.
Claims (17)
1. an Electrochemical separation device, it comprises:
Pair of electrodes; And
At least one light chamber filter between described electrode, this light chamber filter provides a light chamber, this light chamber comprises the entrance that allows pending solution enter, allows through desalinating the outlet of solution output after treatment and being communicated with the light chamber runner of described entrance and exit, and the width of this light chamber runner roughly reduces gradually along flow direction from described entrance to outlet.
2. Electrochemical separation device as claimed in claim 1, further comprise a plurality of amberplexes and at least one dense chamber filter, this dense chamber filter provides a dense chamber, this dense chamber includes an inlet and an outlet and is communicated with the dense chamber runner of described entrance and exit, and described light chamber filter and dense chamber filter are alternately arranged between amberplex.
3. Electrochemical separation device as claimed in claim 2, wherein, described dense chamber runner is roughly corresponding consistent on width with described light chamber runner.
4. Electrochemical separation device as claimed in claim 2, wherein, described dense chamber runner is not corresponding consistent with described light chamber runner on width.
5. Electrochemical separation device as claimed in claim 4, wherein, the width of described dense chamber runner remains unchanged substantially along flow direction.
6. Electrochemical separation device as claimed in claim 1 or 2, wherein, the width of described light chamber runner reduces along flow direction linearity or substantial linear.
7. an Electrochemical separation device, it comprises:
Pair of electrodes; And
At least one light chamber filter between described electrode, this light chamber filter provides a light chamber, this light chamber comprises the entrance that allows pending solution enter, allows through desalinating the outlet of solution output after treatment and being communicated with the light chamber runner of described entrance and exit, this light chamber runner comprises longitudinal runner section and runner turning part, described runner turning part is by described longitudinal runner section formation serpentine flow-channels that is together in series, and the width of wherein said longitudinal runner section roughly reduces gradually along flow direction from described solution entrance to outlet.
8. Electrochemical separation device as claimed in claim 7, further comprise a plurality of amberplexes and at least one dense chamber filter, this dense chamber filter provides a dense chamber, this dense chamber includes an inlet and an outlet and is communicated with the dense chamber runner of described entrance and exit, and described light chamber filter and dense chamber filter are alternately arranged between amberplex.
9. Electrochemical separation device as claimed in claim 8, wherein, described dense chamber runner is roughly corresponding consistent on width with described light chamber runner.
10. Electrochemical separation device as claimed in claim 7 or 8, wherein, the width of described longitudinal runner section reduces along flow direction linearity or substantial linear.
11. Electrochemical separation devices as claimed in claim 7 or 8, wherein, described in each, the width of runner turning part is with from rear and front end, coupled longitudinal runner section is consistent at the width of coupled part respectively.
12. Electrochemical separation devices as claimed in claim 7 or 8, wherein, multiple described runners turning part has an identical width, and this width is not more than the minimum widith of longitudinal runner section.
13. Electrochemical separation devices as described in claim 2 or 8, wherein, described light chamber filter also comprises a pair of pore aliging with the entrance and exit of dense chamber respectively, dense chamber filter also comprises a pair of pore aliging with the entrance and exit of light chamber respectively.
14. Electrochemical separation devices as described in claim 1,2,7 or 8, wherein described in each, filter is one and has roughly the planar sheet structure of thickness uniformly.
15. Electrochemical separation devices as claimed in claim 14, wherein said filter thickness is in the scope of 0.5 millimeter to 2.0 millimeters.
16. 1 kinds of solution-treated methods, it comprises:
A kind of Electrochemical separation device is provided, it comprises pair of electrodes and at least one the light chamber filter between described electrode, this light chamber filter provides a light chamber, this light chamber comprises the entrance that allows pending solution enter, allows through desalinating the outlet of solution output after treatment and being communicated with the light chamber runner of described entrance and exit, and the width of this light chamber runner roughly reduces gradually along flow direction from described solution entrance to outlet;
Entrance input by pending solution from described light chamber, and make it flow to the outlet of light chamber along light chamber runner, the anion in this process in solution and cation move towards anode and cathode direction in described electrode respectively; And
Collect fresh water from the outlet of light chamber.
17. 1 kinds of solution-treated methods, it comprises:
A kind of Electrochemical separation device is provided, it comprises pair of electrodes, and at least one light chamber filter between described electrode, this light chamber filter provides a light chamber, this light chamber comprises the entrance that allows pending solution enter, allow through desalinating the outlet of solution output after treatment, and be communicated with the light chamber runner of described entrance and exit, this light chamber runner comprises longitudinal runner section and runner turning part, described runner turning part is by described longitudinal runner section formation serpentine flow-channels that is together in series, the width of wherein said longitudinal runner section roughly reduces gradually along flow direction from described solution entrance to outlet,
Entrance input by pending solution from described light chamber, and make it flow to the outlet of light chamber along light chamber runner, the anion in this process in solution and cation move towards anode and cathode direction in described electrode respectively; And
Collect fresh water from the outlet of light chamber.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310179970.8A CN104147933A (en) | 2013-05-15 | 2013-05-15 | Electrochemical separating device and use method thereof |
| PCT/US2014/037498 WO2014186226A1 (en) | 2013-05-15 | 2014-05-09 | Electrochemical separation device and method for using the same |
| TW103117211A TW201503951A (en) | 2013-05-15 | 2014-05-15 | Electrochemical separation device and method for using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310179970.8A CN104147933A (en) | 2013-05-15 | 2013-05-15 | Electrochemical separating device and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104147933A true CN104147933A (en) | 2014-11-19 |
Family
ID=51023030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310179970.8A Pending CN104147933A (en) | 2013-05-15 | 2013-05-15 | Electrochemical separating device and use method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104147933A (en) |
| TW (1) | TW201503951A (en) |
| WO (1) | WO2014186226A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107398181A (en) * | 2016-05-20 | 2017-11-28 | 中国石油化工股份有限公司 | A kind of electrodialysis plant for the concentration of coal chemical industry strong brine sub-prime |
| CN107522268A (en) * | 2017-08-15 | 2017-12-29 | 中国科学院青岛生物能源与过程研究所 | It is a kind of to be used for water process, the device and its separation method of feed separation |
| CN108883369A (en) * | 2016-03-22 | 2018-11-23 | 富士胶片制造欧洲有限公司 | Multipurpose film unit stack and its manufacturing method |
| CN112610433A (en) * | 2020-12-08 | 2021-04-06 | 南京工业大学 | Forward osmosis-electric salt difference energy efficient continuous power generation device based on porous medium |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019108082A1 (en) * | 2017-12-01 | 2019-06-06 | Corning Incorporated | Filtration assembly and filtration system including the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB772862A (en) * | 1952-07-18 | 1957-04-17 | Ionics | Process and apparatus for electrodialyzing liquids |
| GB944168A (en) * | 1959-03-19 | 1963-12-11 | South African Council Scientif | Improvements relating to electrodialytic processes and apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5972191A (en) * | 1997-01-17 | 1999-10-26 | Archer Daniels Midland Company | Electrodialysis apparatus |
-
2013
- 2013-05-15 CN CN201310179970.8A patent/CN104147933A/en active Pending
-
2014
- 2014-05-09 WO PCT/US2014/037498 patent/WO2014186226A1/en active Application Filing
- 2014-05-15 TW TW103117211A patent/TW201503951A/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB772862A (en) * | 1952-07-18 | 1957-04-17 | Ionics | Process and apparatus for electrodialyzing liquids |
| GB944168A (en) * | 1959-03-19 | 1963-12-11 | South African Council Scientif | Improvements relating to electrodialytic processes and apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108883369A (en) * | 2016-03-22 | 2018-11-23 | 富士胶片制造欧洲有限公司 | Multipurpose film unit stack and its manufacturing method |
| CN108883369B (en) * | 2016-03-22 | 2021-08-06 | 富士胶片制造欧洲有限公司 | Multipurpose membrane unit stack and method for manufacturing same |
| CN107398181A (en) * | 2016-05-20 | 2017-11-28 | 中国石油化工股份有限公司 | A kind of electrodialysis plant for the concentration of coal chemical industry strong brine sub-prime |
| CN107398181B (en) * | 2016-05-20 | 2020-06-09 | 中国石油化工股份有限公司 | Electrodialysis device for quality-based concentration of strong brine in coal chemical industry |
| CN107522268A (en) * | 2017-08-15 | 2017-12-29 | 中国科学院青岛生物能源与过程研究所 | It is a kind of to be used for water process, the device and its separation method of feed separation |
| CN112610433A (en) * | 2020-12-08 | 2021-04-06 | 南京工业大学 | Forward osmosis-electric salt difference energy efficient continuous power generation device based on porous medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014186226A1 (en) | 2014-11-20 |
| TW201503951A (en) | 2015-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Campione et al. | Electrodialysis for water desalination: A critical assessment of recent developments on process fundamentals, models and applications | |
| Lin | Energy efficiency of desalination: fundamental insights from intuitive interpretation | |
| CN104147933A (en) | Electrochemical separating device and use method thereof | |
| Kwon et al. | Brine recovery using reverse electrodialysis in membrane-based desalination processes | |
| Schlumpberger et al. | Scalable and continuous water deionization by shock electrodialysis | |
| US8652314B2 (en) | Flow de-ionization using independently controlled voltages | |
| CN104524976B (en) | A kind of electric nanofiltration device for one/multivalent ion Selective Separation | |
| US20080078672A1 (en) | Hybrid Capacitive Deionization and Electro-Deionization (CDI-EDI) Electrochemical Cell for Fluid Purification | |
| US11478752B2 (en) | Electrodialysis systems with decreased concentration gradients at high recovery rates | |
| EP3317001B1 (en) | Coiled membrane module and diffusion dialysis method with a counterflow mode | |
| CN102372345A (en) | Super capacitor desalination apparatus and desalination method | |
| Doornbusch et al. | Current utilization in electrodialysis: Electrode segmentation as alternative for multistaging | |
| US20230416122A1 (en) | Return Flow System for Ion Concentration Polarization (ICP) | |
| WO2014121316A1 (en) | Process and device for desalinating water | |
| Atlas et al. | Spatial variations of pH in electrodialysis stacks: Theory | |
| CN103816806A (en) | Electrodialysis partitioning plate | |
| Gonzalez-Vogel et al. | 3D printed manifolds for improved flow management in electrodialysis operation for desalination | |
| US12070722B2 (en) | Fluid manifolds in electrodialysis devices | |
| KR102078100B1 (en) | Electrodialysis system | |
| EP3900095A1 (en) | Wound redox flow battery | |
| CN106006869A (en) | Capacitance desalter provided with cross diversion pipes | |
| CN106673144B (en) | A kind of electric nanofiltration device with low salt rejection rate and high rejection to organics rate | |
| CN100436338C (en) | Process and equipment for preparing pure water | |
| CN211896193U (en) | Electrodialyzer with high desalination rate | |
| CN212142147U (en) | Separation device and liquid treatment apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141119 |