CN203866079U - Nano titanium carburization electrode CDI (capacitive deionization) device - Google Patents
Nano titanium carburization electrode CDI (capacitive deionization) device Download PDFInfo
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- CN203866079U CN203866079U CN201420083929.0U CN201420083929U CN203866079U CN 203866079 U CN203866079 U CN 203866079U CN 201420083929 U CN201420083929 U CN 201420083929U CN 203866079 U CN203866079 U CN 203866079U
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Abstract
The utility model discloses a nano titanium carburization electrode CDI (capacitive deionization) device and belongs to the technical field of seawater and bitter-brackish water desalination. The device comprises a CDI unit, wherein the CDI unit comprises a separating net, a cation exchange membrane and an anion exchange membrane are arranged on two sides of the separating net, a nano titanium carburization double-sided electrode cathode and a nano titanium carburization double-sided electrode anode are arranged on outer sides of the cation exchange membrane and the anion exchange membrane, and insulating baffles are arranged on outer sides of the nano titanium carburization double-sided electrode cathode and the nano titanium carburization double-sided electrode anode. The device is simple to operate and high in energy utilization rate; acid and base are not required in electrode regeneration processes, so that the device is clean and free of secondary pollution; the anion and cation exchange membranes are added, so that the adsorption property of electrodes is greatly improved; nano titanium carburization double-sided electrodes are adopted, and collectors cannot be corroded easily; meanwhile, carbon electrodes are fully utilized, and the electrodes can be reused, so that the manufacturing cost is reduced, the space is saved and the like.
Description
Technical field
The utility model belongs to seawater, technique of desalinating saline water field, is specifically related to a kind of nano-titanium carburizing electrode capactitance deionizer.
Background technology
For the desalination of seawater, brackish water, the desalting method adopting both at home and abroad at present mainly contains following several: distillation method, reverse osmosis method, electroosmose process, ion exchange method, electro-deionisation etc.In aforesaid method, distillation method energy consumption is high, cost large, it is large to take up an area; Reverse osmosis method and electro-deionisation require highly to influent quality, and electrode is perishable; Ion exchange method needs acid-alkali regeneration, and acid and alkali consumption amount is large, produces secondary pollution; Electroosmose process is because the voltage using is high, so the decomposition of water easily occurs in power consumption.For this reason, need to develop a kind of water technology of novel energy-saving environment-friendly.
Capacitive deionization (Capacitive Deionizaiton, CDI) desalting technology is that the electrostatic double layer that utilizes solution and electrode interface to form carrys out the charge species in adsorbent solution.Traditional capacitive deionization unit is mainly by paired electrode, by adding the ion in electrostatic field adsorbent solution at the two ends of electrode, in the time that electrode is saturated, by electrode short circuit or add that reverse voltage regenerates.But in regenerative process, the absorption of the desorption of anode surface negatively charged ion and cationic absorption and the cationic desorption of cathode surface and negatively charged ion exists simultaneously, thus can have a strong impact on regeneration rear electrode electro-adsorption ability.
Disclosed CDI device in No. 6309532 United States Patent (USP), in electrode is manufactured, uses conductive epoxy resin etc., by adhering to each other to carbon material and collector, thus the obstruction of carbon hole meeting quilt part, and electroconductibility can be deteriorated.In the disclosed structure of this external this patent, the border of collector is exposed to outside, exists the collector can impaired problem.
Utility model content
The purpose of this utility model is to provide for addressing the above problem the nano-titanium carburizing electrode capactitance deionizer that a kind of capacity usage ratio is high, prevent secondary pollution.
The technical scheme that the utility model adopts is:
A kind of nano-titanium carburizing electrode capactitance deionizer, described device comprises capacitive deionization (CDI) unit, described CDI unit comprises filter, described filter arranged on both sides cationic exchange membrane and anion-exchange membrane, nano-titanium carburizing double-face electrode negative electrode and nano-titanium carburizing double-face electrode anode are arranged in described cationic exchange membrane and anion-exchange membrane outside, and insulating barrier is arranged in described nano-titanium carburizing double-face electrode negative electrode and nano-titanium carburizing double-face electrode anode outside.
Preferably, on described nano-titanium carburizing double-face electrode negative electrode and nano-titanium carburizing double-face electrode anode, contact conductor is installed, described contact conductor is the material titanium sheet of good, the resistance to electrochemistry of conductivity and chemical corrosion.
Further, described in be arranged in nano-titanium carburizing double-face electrode negative electrode outside insulating barrier bottom have water-in, described in be arranged in nano-titanium carburizing double-face electrode anode outside insulating barrier top have water outlet.
Preferably, cationic exchange membrane is arranged in the left side of described filter, and cationic exchange membrane is arranged on the right side of described filter.
Preferably, described filter is electrical isolation, and the material of described filter is papery barrier film, nylon fiber and porous polymer plate.
Preferably, described cationic exchange membrane and anion-exchange membrane, containing ionic group, have and select the homogeneous membrane of the ability that sees through or heterogeneous polymeric membrane the ion in solution.
Preferably, it is conducting base that described nano-titanium carburizing double-face electrode negative electrode and nano-titanium carburizing double-face electrode anode adopt the good nano-titanium sheet of conductivity, taking nano-titanium as template, electrode materials adopts carbon fiber, forms nano-titanium carburizing double-face electrode in the growth of template two sides.
Preferably, the bottom of described insulating barrier has the sulculus that sealing-ring is installed, the surrounding installing insulating framework of described insulating barrier, fixes by screw between the two, and the material of described insulating barrier and Insulating frame adopts PVC plate, ABS plastic plate and the poly (methyl methacrylate) plate with physical strength.
Preferably, the quantity of described CDI unit is at least one, and described nano-titanium carburizing electrode capactitance deionizer can be square or circular.
Further, this device also comprises filtering unit and ozonization unit, described filtering unit comprises electricity wadding device and strainer, described filtering unit is connected with the water-in of CDI unit, described ozonization unit comprises ozonization plant, strainer and storage tank, and described ozonization unit is connected with the water outlet of CDI unit.
The utlity model has following advantage:
The direct acquisition that this device is electric energy due to energy recovery, because without the conversion of energy, therefore the energy recovery efficiency of capacitive deionization is higher than the energy recovery of reverse osmosis, so capacity usage ratio is high; Because overflow-type deionization electrical condenser turns round with low power, ton water current consumption cost is in below 1/3 of reverse osmosis power consumption, on this basis because adopting ultra-large type electrical condenser to reclaim and store the more than 30% residual electricity of overflow-type electrode for capacitors, the ton water current consumption of its region waste water desalination body apparatus can be in 1.5kWh, so energy consumption is low, cost is low; Due to impressed voltage adopt be AC power, so simple to operation; Due to electrode regeneration, and regenerative process is without soda acid, so clean non-secondary pollution; Owing to having added anion and cation exchange membrane, so greatly improved the absorption property of electrode; Owing to adopting nano-titanium carburizing double-face electrode, so collector electrode is not perishable, carbon dioxide process carbon electrode is fully used simultaneously, and electrode can be reused, and has reduced manufacturing cost, saves space.
Brief description of the drawings
The structural representation that Fig. 1 is a kind of nano-titanium carburizing electrode capactitance deionizer desalination system of providing in the utility model embodiment 1;
Fig. 2 is the structural representation of CDI unit in a kind of nano-titanium carburizing electrode capactitance deionizer providing in the utility model embodiment 1.
Embodiment
Below in conjunction with drawings and embodiments, the utility model is described in more detail.
Embodiment 1
The present embodiment provides a kind of nano-titanium carburizing electrode capactitance deionizer, comprises CDI unit 8, and the quantity of CDI unit 8 is one.CDI unit 8 comprises filter 1.Cationic exchange membrane 2-1 is arranged in the left side of filter 1, anion-exchange membrane 2-2 is arranged on the right side of filter 1, filter 1 is electrical isolation, its material is papery barrier film, its thickness is 0.2mm, cationic exchange membrane 2-1 and anion-exchange membrane 2-2, containing ionic group, have the homogeneous membrane of selecting the ability that sees through to the ion in solution.Nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 are arranged in cationic exchange membrane 2-1 and anion-exchange membrane 2-2 outside, on nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2, contact conductor 4 is installed, contact conductor 4 is the material titanium sheet of good, the resistance to electrochemistry of conductivity and chemical corrosion.It is conducting base that nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 adopt the good nano-titanium sheet of conductivity, electricity matrix thickness is 1mm, taking nano-titanium as template, electrode materials adopts carbon fiber, forms nano-titanium carburizing double-face electrode in the growth of template two sides.Insulating barrier 5 is arranged in nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 outside.Insulating barrier 5 bottoms that are arranged in nano-titanium carburizing double-face electrode negative electrode 3-1 outside have water-in 7, and the insulating barrier top that is arranged in nano-titanium carburizing double-face electrode anode 3-2 outside has water outlet 6.The bottom of insulating barrier 5 has the sulculus that sealing-ring is installed, the surrounding installing insulating framework of insulating barrier 5, fix by screw between the two, the thickness of insulating barrier 5 is 6mm, and the material of insulating barrier 5 and Insulating frame adopts the ABS plastic plate with physical strength.This device also comprises filtering unit 9 and ozonization unit 10.Filtering unit 9 comprises electricity wadding device 11 and strainer 12, and filtering unit 9 is connected with the water-in 7 of CDI unit 8.Ozonization unit 10 comprises ozonization plant 13, strainer 12 and storage tank 14, and the water outlet 6 of 10YuCDI unit, ozonization unit 8 is connected.
In the present embodiment, the method for the desalination of this device is as follows:
(1) seawater, brackish water or high slat-containing wastewater are passed in CDI unit 8 through water-in 7 after filtering unit 9 pre-treatment, its flow is by water outlet water quality requirement or the control of water outlet intermediate ion concentration requirement;
(2) desalination: contact conductor 4 is connected with the alternating-current of 1.5V, under meter is regulated to required flow, record at set intervals the brine concentration of water outlet;
(3) desorption; In the time that conductivitimeter numerical value gos up, illustrate electrode adsorption ion oneself through saturated, now capacitive deionization desalting plant enters the desorption stage, goes out water concentration and arrives after maximum value and start to decline, and drops to when identical with influent concentration, again enters absorption phase.Electrode regeneration in this process, the concentrated solution that obtains salt is done salinization product use.Sterilize finally by crossing ozonization unit 10, in the time of the certain altitude that reaches storage tank 14 of concentrated solution, just flow out from water outlet.
High slat-containing wastewater desalination (contain organism and at least the waste water of massfraction >=3.5% of total dissolved solidss comprise high salt sanitary wastewater and high salt industrial waste water).
(1) obtain solution: the NaCl solution that in test, compound concentration is 10000mg/L is simulated brackish water.(2) desalination: add 1.5V voltage to desalting plant two ends, under meter is adjusted to required flow 10mg/Lmin, NaCl solution is pumped in desalting plant, recorded the salt concn of water outlet every five minutes.(3) desorption: when the bottom out afterwards of conductivity meter numerical stability, illustrate that electrode reaches capacity, enter the desorption stage.
Embodiment 2
The present embodiment provides a kind of nano-titanium carburizing electrode capactitance deionizer, comprises CDI unit 8, and the quantity of CDI unit 8 is one.CDI unit 8 comprises filter 1.Cationic exchange membrane 2-1 is arranged in the left side of filter 1, anion-exchange membrane 2-2 is arranged on the right side of filter 1, filter 1 is electrical isolation, its material is nylon fiber, its thickness is 0.6mm, cationic exchange membrane 2-1 and anion-exchange membrane 2-2, containing ionic group, have heterogeneous polymeric membrane to the ion in solution.Nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 are arranged in cationic exchange membrane 2-1 and anion-exchange membrane 2-2 outside, on nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2, contact conductor 4 is installed, contact conductor 4 is the material titanium sheet of good, the resistance to electrochemistry of conductivity and chemical corrosion.It is conducting base that nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 adopt the good nano-titanium sheet of conductivity, electricity matrix thickness is 0.2mm, taking nano-titanium as template, electrode materials adopts carbon fiber, forms nano-titanium carburizing double-face electrode in the growth of template two sides.Insulating barrier 5 is arranged in nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 outside.Insulating barrier 5 bottoms that are arranged in nano-titanium carburizing double-face electrode negative electrode 3-1 outside have water-in 7, and the insulating barrier top that is arranged in nano-titanium carburizing double-face electrode anode 3-2 outside has water outlet 6.The bottom of insulating barrier 5 has the sulculus that sealing-ring is installed, and the surrounding installing insulating framework of insulating barrier 5, fixes by screw between the two, and the thickness of insulating barrier 5 is 10mm, and the material of insulating barrier 5 and Insulating frame adopts the PVC plate with physical strength.
In the present embodiment, the method for the desalination of this device is as follows:
(1) will after seawater, brackish water or high slat-containing wastewater pre-treatment, pass in CDI unit 8 through water-in 7, its flow is by water outlet water quality requirement or the control of water outlet intermediate ion concentration requirement;
(2) desalination: contact conductor 4 is connected with the alternating-current of 1.5V, under meter is regulated to required flow, record at set intervals the brine concentration of water outlet;
(3) desorption; In the time that conductivitimeter numerical value gos up, illustrate electrode adsorption ion oneself through saturated, now capacitive deionization desalting plant enters the desorption stage, goes out water concentration and arrives after maximum value and start to decline, and drops to when identical with influent concentration, again enters absorption phase.Electrode regeneration in this process, the concentrated solution that obtains salt is done salinization product use.
Brackish water desalination (natural water that in water, total dissolved solidss content is 1000～8000mg/L).
(1) obtain solution: the NaCl solution that in test, compound concentration is 5000mg/L is simulated brackish water.(2) desalination: add 1.5V voltage to desalting plant two ends, under meter is adjusted to required flow 10mg/Lmin, NaCl solution is pumped in desalting plant, recorded the salt concn of water outlet every five minutes.(3) desorption: when the bottom out afterwards of conductivity meter numerical stability, illustrate that electrode reaches capacity, enter the desorption stage.
Embodiment 3
The present embodiment provides a kind of nano-titanium carburizing electrode capactitance deionizer, comprises CDI unit 8, and the quantity of CDI unit 8 is one.CDI unit 8 comprises filter 1.Cationic exchange membrane 2-1 is arranged in the left side of filter 1, anion-exchange membrane 2-2 is arranged on the right side of filter 1, filter 1 is electrical isolation, its material is porous polymer plate, its thickness is 1mm, cationic exchange membrane 2-1 and anion-exchange membrane 2-2, containing ionic group, have heterogeneous polymeric membrane to the ion in solution.Nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 are arranged in cationic exchange membrane 2-1 and anion-exchange membrane 2-2 outside, on nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2, contact conductor 4 is installed, contact conductor 4 is the material titanium sheet of good, the resistance to electrochemistry of conductivity and chemical corrosion.It is conducting base that nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 adopt the good nano-titanium sheet of conductivity, electricity matrix thickness is 0.8mm, taking nano-titanium as template, electrode materials adopts carbon fiber, forms nano-titanium carburizing double-face electrode in the growth of template two sides.Insulating barrier 5 is arranged in nano-titanium carburizing double-face electrode negative electrode 3-1 and nano-titanium carburizing double-face electrode anode 3-2 outside.Insulating barrier 5 bottoms that are arranged in nano-titanium carburizing double-face electrode negative electrode 3-1 outside have water-in 7, and the insulating barrier top that is arranged in nano-titanium carburizing double-face electrode anode 3-2 outside has water outlet 6.The bottom of insulating barrier 5 has the sulculus that sealing-ring is installed, the surrounding installing insulating framework of insulating barrier 5, fix by screw between the two, the thickness of insulating barrier 5 is 6mm, and the material of insulating barrier 5 and Insulating frame adopts the poly (methyl methacrylate) plate with physical strength.
In the present embodiment, the method for the desalination of this device is as follows:
(1) will after seawater, brackish water or high slat-containing wastewater pre-treatment, pass in CDI unit 8 through water-in 7, its flow is by water outlet water quality requirement or the control of water outlet intermediate ion concentration requirement;
(2) desalination: contact conductor 4 is connected with the alternating-current of 1.5V, under meter is regulated to required flow, record at set intervals the brine concentration of water outlet;
(3) desorption; In the time that conductivitimeter numerical value gos up, illustrate electrode adsorption ion oneself through saturated, now capacitive deionization desalting plant enters the desorption stage, goes out water concentration and arrives after maximum value and start to decline, and drops to when identical with influent concentration, again enters absorption phase.Electrode regeneration in this process, the concentrated solution that obtains salt is done salinization product use.
Sea water desaltination (sea water desaltination that is 35000mg/L by salt concentration is to the water below 500mg/L).
(1) obtain solution: the NaCl solution that in test, compound concentration is 35000mg/L is simulated brackish water.(2) desalination: add 1.5V voltage to desalting plant two ends, under meter is adjusted to required flow 10mg/Lmin, NaCl solution is pumped in desalting plant, recorded the salt concn of water outlet every five minutes.(3) desorption: when the bottom out afterwards of conductivity meter numerical stability, illustrate that electrode reaches capacity, enter the desorption stage.
The direct acquisition that this device is electric energy due to energy recovery, because without the conversion of energy, therefore the energy recovery efficiency of capacitive deionization is higher than the energy recovery of reverse osmosis, so capacity usage ratio is high; Because overflow-type deionization electrical condenser turns round with low power, ton water current consumption cost is in below 1/3 of reverse osmosis power consumption, on this basis because adopting ultra-large type electrical condenser to reclaim and store the more than 30% residual electricity of overflow-type electrode for capacitors, the ton water current consumption of its region waste water desalination body apparatus can be in 1.5kWh, so energy consumption is low, cost is low; Due to impressed voltage adopt be AC power, so simple to operation; Due to electrode regeneration, and regenerative process is without soda acid, so clean non-secondary pollution; Owing to having added anion and cation exchange membrane, so greatly improved the absorption property of electrode; Owing to adopting nano-titanium carburizing double-face electrode, so collector electrode is not perishable, carbon dioxide process carbon electrode is fully used simultaneously, and electrode can be reused, and has reduced manufacturing cost, saves space.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (10)
1. a nano-titanium carburizing electrode capactitance deionizer, it is characterized in that, described device comprises capacitive deionization (CDI) unit, described CDI unit comprises filter, described filter arranged on both sides cationic exchange membrane and anion-exchange membrane, nano-titanium carburizing double-face electrode negative electrode and nano-titanium carburizing double-face electrode anode are arranged in described cationic exchange membrane and anion-exchange membrane outside, and insulating barrier is arranged in described nano-titanium carburizing double-face electrode negative electrode and nano-titanium carburizing double-face electrode anode outside.
2. nano-titanium carburizing electrode capactitance deionizer according to claim 1, it is characterized in that, on described nano-titanium carburizing double-face electrode negative electrode and nano-titanium carburizing double-face electrode anode, contact conductor is installed, described contact conductor is the material titanium sheet of good, the resistance to electrochemistry of conductivity and chemical corrosion.
3. nano-titanium carburizing electrode capactitance deionizer according to claim 1, it is characterized in that, the described insulating barrier bottom that is arranged in nano-titanium carburizing double-face electrode negative electrode outside has water-in, described in be arranged in nano-titanium carburizing double-face electrode anode outside insulating barrier top have water outlet.
4. nano-titanium carburizing electrode capactitance deionizer according to claim 1, is characterized in that, cationic exchange membrane is arranged in the left side of described filter, and cationic exchange membrane is arranged on the right side of described filter.
5. nano-titanium carburizing electrode capactitance deionizer according to claim 1, is characterized in that, described filter is electrical isolation, and the material of described filter is papery barrier film, nylon fiber and porous polymer plate.
6. nano-titanium carburizing electrode capactitance deionizer according to claim 1, it is characterized in that, described cationic exchange membrane and anion-exchange membrane, containing ionic group, have and select the homogeneous membrane of the ability that sees through or heterogeneous polymeric membrane the ion in solution.
7. nano-titanium carburizing electrode capactitance deionizer according to claim 1, it is characterized in that, it is conducting base that described nano-titanium carburizing double-face electrode negative electrode and nano-titanium carburizing double-face electrode anode adopt the good nano-titanium sheet of conductivity, taking nano-titanium as template, electrode materials adopts carbon fiber, forms nano-titanium carburizing double-face electrode in the growth of template two sides.
8. nano-titanium carburizing electrode capactitance deionizer according to claim 1, it is characterized in that, the bottom of described insulating barrier has the sulculus that sealing-ring is installed, the surrounding installing insulating framework of described insulating barrier, fix by screw between the two, the material of described insulating barrier and Insulating frame adopts PVC plate, ABS plastic plate and the poly (methyl methacrylate) plate with physical strength.
9. nano-titanium carburizing electrode capactitance deionizer according to claim 1, is characterized in that, the quantity of described CDI unit is at least one, and described nano-titanium carburizing electrode capactitance deionizer can be square or circular.
10. nano-titanium carburizing electrode capactitance deionizer according to claim 1, it is characterized in that, this device also comprises filtering unit and ozonization unit, described filtering unit comprises electricity wadding device and strainer, described filtering unit is connected with the water-in of CDI unit, described ozonization unit comprises ozonization plant, strainer and storage tank, and described ozonization unit is connected with the water outlet of CDI unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803683A (en) * | 2014-02-26 | 2014-05-21 | 武汉科技大学 | Capacitive deionization device for nano-titanium carburization electrode |
| CN115043466A (en) * | 2022-08-10 | 2022-09-13 | 杭州水处理技术研究开发中心有限公司 | High-salt high-concentration organic wastewater treatment device |
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2014
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803683A (en) * | 2014-02-26 | 2014-05-21 | 武汉科技大学 | Capacitive deionization device for nano-titanium carburization electrode |
| CN103803683B (en) * | 2014-02-26 | 2015-12-30 | 武汉科技大学 | A kind of nano-titanium carburizing electrode capactitance deionizer |
| CN115043466A (en) * | 2022-08-10 | 2022-09-13 | 杭州水处理技术研究开发中心有限公司 | High-salt high-concentration organic wastewater treatment device |
| CN115043466B (en) * | 2022-08-10 | 2022-12-09 | 杭州水处理技术研究开发中心有限公司 | High-salt high-concentration organic wastewater treatment device |
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