CN104556315B - A kind of membrane stack and electro-desalting assembly - Google Patents
A kind of membrane stack and electro-desalting assembly Download PDFInfo
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- CN104556315B CN104556315B CN201410760169.7A CN201410760169A CN104556315B CN 104556315 B CN104556315 B CN 104556315B CN 201410760169 A CN201410760169 A CN 201410760169A CN 104556315 B CN104556315 B CN 104556315B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
Abstract
The present invention relates to a kind of water treatment facilities, particularly relate to a kind of membrane stack and electro-desalting assembly.Membrane stack, including film bag, dense network of rivers lattice and fresh water grid, film bag includes anion exchange membrane and cation exchange membrane；Dense network of rivers lattice are arranged between anion exchange membrane and cation exchange membrane；Fresh water grid is arranged on adjacent two film bag gaps；The two ends of film bag are provided with the first electrode slice for forming electric field and the second electrode slice；The length of the first electrode slice or the second electrode slice is less than anion exchange membrane or the length of cation exchange membrane.The central canal surrounding of electro-desalting assembly has been evenly arranged current collecting tank, film bag and grid around central canal spiral wrap, formation rolled film core.Film core is placed in putamina, constitutes electro-desalting assembly.To produce electric field heterogeneous between electrode of the present invention, electric current density is uneven.Electro-desalting assembly in the present invention, has that desalting efficiency is high, tolerance stiffness capabilities is strong and low power consumption and other advantages.
Description
Technical field
The present invention relates to a kind of water treatment facilities, particularly relate to a kind of membrane stack and electro-desalting assembly.
Background technology
Common coiled electrodialyzer is joined, by anions and canons exchange membrane, net dividing plate, positive and negative electrode and dense, fresh water, the electrodialyzer that collector is constituted, and agent structure is rolling cylindrical structure.Ion exchange membrane, net dividing plate will the most mutually be close to, roll into cylinder with the collector pipe doubling as an electrode for axial centre, the outer bread of cylinder is to make the metal shell of another electrode.
The advanced technology that electricity desalination is a kind of electrodialytic technique and ion exchange technique blends; system can pass through effect and ion exchange resin exchange interaction to ion by anions and canons exchange membrane to the selectivity of anions and canons by electromagnetic field; the directional migration of ion is realized under the effect of DC electric field; thus complete the deep desalting of water; system can complete resin continuously automatic regeneration; acid-alkali regeneration resin is used, it is thus possible to produce high-quality pure water continuously without shutting down.Coiling type electric salt remover is that traditional electrodialytic technique and ion exchange technique are organically combined, and is a kind of without using soda acid, utilizing DC source to remove deionization from former water continuously, produces the process of high-quality pure water continuously.
nullCN1426970A (2003-7-2) discloses a kind of electrode concentrated fresh water circulation electro dialyzer with film one roll set，Have by the moon、Cation exchange membrane，Fresh water collection sparge pipe，Dense、Insulation net dividing plate in fresh water runner，The rolling electrodialysis main component constituted with positive and negative foil electrode，The main body structure body of its coiled electrodialyzer is rolling cylindrical structure，Between a pair anion and cation exchange membrane, i.e. sandwich an insulation net dividing plate，Constitute fresh water flow passage unit，The opening of every fresh water runner is connected with fresh water collection sparge pipe areole，An insulation net dividing plate is sandwiched between adjacent two fresh water flow passage units，Constitute concentrated stream road unit，Each the moon、Cation exchange membrane and insulation net dividing plate are the most mutually close to constitute membrane stack，A foil is sandwiched between two cavity blocks or between two anode membranes，The area of foil is less than ion exchange membrane area，Two ion exchange membrane surroundings of folder foil are bonded and sealed，It is welded with wire on foil to be connected with outer electrode，Also can foil two sides brush dielectric or same conducting polymer composite，Constitute membrane stack electrode，Membrane stack electrode、Net dividing plate、Membrane stack is the most mutually close to，And integrate sparge pipe with fresh water and roll into cylinder as axial centre.But the desalting efficiency of this device still haves much room for improvement.
Summary of the invention
First technical purpose of the present invention is to provide the membrane stack that a kind of desalination rate being used in electro-desalting assembly is high, aquifer yield is big, energy consumption is low.
Second technical purpose of the present invention is to provide a kind of electro-desalting assembly that desalination rate is high, aquifer yield is big, energy consumption is low including described membrane stack.
First technical purpose of the present invention has the technical scheme that
A kind of membrane stack, including film bag, dense network of rivers lattice and fresh water grid, its described film bag includes anion exchange membrane and cation exchange membrane；
Described dense network of rivers lattice are arranged between described anion exchange membrane and cation exchange membrane；
Described fresh water grid is arranged on adjacent two described film bag gaps；
The two ends of described film bag are provided with the first electrode slice for forming electric field and the second electrode slice；
The length of described first electrode slice or the second electrode slice is less than described anion exchange membrane or the length of cation exchange membrane.
The present invention arranges several film bag formation membrane stacks；Using the length electrode slice less than described anion and cation exchange membrane length, and this electrode slice is arranged on film bag two ends, have the advantages that interelectrode distance is near, fluid can produce Dean stream in helical flow path, will reduce the thickness of diffusion layer, strengthens mass transport process;It addition, interelectrode distance is near and is dispersed in film bag two ends and will produce uneven electric field, electric current density is uneven, low near putamina zone current density, high near center pipe region electric current density.Former water flow direction is to high current density direction from low current density, produces water and discharge membrane module through central canal after process.It is cross-current flow that concentrated stream moves direction with former water flow direction.Electro-desalting assembly in the present invention, has that desalting efficiency is high, tolerance stiffness capabilities is strong and low power consumption and other advantages.
As preferably, described film bag also includes the insulating tape being arranged at two ends, and described film bag constitutes the first pole hydroecium, dense hydroecium and the second pole hydroecium successively by described first electrode slice, the second electrode slice and described insulating tape.
When this membrane stack is used for electro-desalting assembly, owing to being provided with insulating tape, in the natural shape poling network of rivers, the two ends compartment of dense network of rivers lattice, reduce energy consumption further.
As preferably, described first electrode slice and the second electrode slice are arranged on the inner side that described anion exchange membrane is relative with cation exchange membrane；And one end of described first electrode slice and the second electrode slice flushes with described film bag edge.
First electrode slice and the second electrode slice are arranged in inner side i.e. the film bag of anion and cation exchange membrane by the present invention, can will reduce the thickness of fluid diffusion layer, strengthen mass transport process.
As preferably, the width of described first electrode slice or the second electrode slice is equal to described anion exchange membrane or the width of cation exchange membrane.
So can improve electric field, thus improve ion mobility.Meanwhile, it is the thinnest that the thickness of electrode slice preferably designs, to reduce energy consumption.
As preferably, described insulating tape is epoxy resin layer insulating tape；Described electrode slice is copper electrode sheet or copper titanizing electrode slice.
Test result indicate that, the observable index tradition electro-desalting device especially electrodialyzer of copper electrode and copper titanizing electrode rolling electro-desalting device especially electrodialyzer is much lower.
Second technical purpose of the present invention has the technical scheme that
A kind of electro-desalting assembly, also includes shell, the central canal being arranged in described shell and for sealing the end cap at described shell two ends, and its described anion exchange membrane and cation exchange membrane are alternately arranged, and described dense network of rivers lattice and fresh water grid are alternately arranged；
Described film bag is connected by described central canal and makes cylinder along described central canal；
Described central canal surrounding has been evenly arranged current collecting tank；
Near a pole of the described first electrode slice composition electrode of described central canal side, near another pole of the described second electrode slice composition electrode of described shell side.
In configuration aspects, rolling electro-desalting assembly of the present invention, is made up of alternately arranged anion exchange membrane and cation exchange membrane, alternately arranged freshwater room grid and dense hydroecium grid, the pole hydroecium of close central canal and electrode, the pole hydroecium of close shell and electrode, central canal, shell etc.；The anode that be arranged in parallel independent by several and corresponding pole hydroecium form combined anode and combined anode room, and gap, anode chamber forms water distribution or the inlet of fresh water；The negative electrode that be arranged in parallel independent by several and corresponding pole hydroecium form cathode assembly and cathode assembly room, and cathode chamber gap forms water distribution or the inlet of fresh water.
What several were independent be parallel to, and anode (or negative electrode) that central canal arranges arranges around central canal or film core, can be evenly distributed, it is also possible to uneven arrangement；Electrode vertical centre tube section can form similar round, or radially；
Pole hydroecium (negative electrode pole hydroecium and anode pole hydroecium) can combine with dense hydroecium and form a film bag, and the two ends of film bag are pole hydroecium, and the middle part of film bag is dense hydroecium.Fresh water moves to central canal effluent outside film core in a spiral manner, enters central canal by the inlet that is centrally located on pipe, after flowed out membrane module by central canal one or both ends.Dense water and pole water flow from membrane module one end to the other end to be parallel to central canal direction.Dense water can be identical with flow direction with pole water, it is also possible to contrary.As can be seen here, fresh water and dense water (and pole water) runner form the cross-flow passes pattern with certain angle.
Some film cores can share a putamina (or can load several film cores in a putamina), if dry film core is connected by central canal.To produce inhomogeneous field between compound electrode, during work, electric current density is uneven, low near putamina zone current density, high near center pipe region electric current density.Fresh water flow direction is to high current density direction from low current density, produces water and discharge membrane module through central canal after process.
The electro-desalting assembly of the present invention has helical flow path structure and the near feature of interelectrode distance, and fluid can produce Dean stream in helical flow path, will reduce the thickness of diffusion layer, and strengthen mass transport process;Additionally, owing to the rolling of this electro-desalting assembly runner designs, reduce the thickness of diffusion layer, reduce film to resistance;Unidirectional current energy consumption will decline.It is freshwater room in fresh water grid, is dense hydroecium in the lattice runner of the dense network of rivers.
Fresh water flows to high current density direction from low current density, and in water, high valence ion is first removed, and now needs low electric current density (or low driving force) to complete；During the close center pipe region that fresh water enters, water ion or weakly ionized ion at a middle or low price are removed, and now need high electric current density (or high driving force).According to removing the non-uniform electric field that ionic charge height design produces, optimize electro-desalting performance, improve the removal ability to weakly ionized ion, reduce energy consumption.Fresh water and dense water (pole water) are in cross-flow mode, and the dense water in film core exterior lateral area wherein mainly contains the various high valence ions from freshwater room removing, including the hardness ions such as calcium ion and magnesium ion；The various low price ions from freshwater room removing, weakly ionized ion is wherein mainly contained near the dense water of center pipe region, and the hydrion that produced by water decomposition and hydroxide ion etc..In dense hydroecium, hardness ions (calcium ion and magnesium ion) and hydroxyl, bicarbonate radical etc. do not cross, and reduce fouling tendency, improve the membrane module tolerance to water inlet hardness.The helically formula that flows fresh water flows, and enhances current turbulence, thereby reduce negative and positive film surface concentration polarization effect, the most just reduce ion transport resistance, add ion removal efficiency in freshwater room.
If dry film core can share a putamina, if the dry film core in a putamina is connected by central canal, enhance the integration of membrane module, decrease membrane module floor space.
As preferably, it is separately provided for connecting described first electrode slice or the anode connection circle of described second electrode slice or cathode connection circle near described central canal or near described shell side, described anode connection circle is provided with opening in order to form anode pole water and collects circle；It is provided with opening on described cathode connection circle and collects circle in order to form negative electrode pole water.Anode connection circle or cathode connection circle collect circle with described anode pole water or negative electrode pole water collection circle can be integrally-formed, it may also be used for collector water, has saved space, has reduced preparation cost.
As preferably, described end cap includes upper end cover and bottom end cover；
It is provided with on described end cap for flowing to described current collecting tank and the water outlet communicated with described current collecting tank for fresh water from described fresh water grid.
As preferably, described end cap includes upper end cover and bottom end cover；The space for forming dense water cavity it is provided with in described end cap；It is separately provided on described upper end cover or bottom end cover for concentrated stream through the dense water inlet of described dense network of rivers lattice or dense water out；
Described shell side is provided with the fresh water entrance for flowing through described fresh water grid for fresh water；
It is provided with on described end cap for flowing to described current collecting tank and the water outlet communicated with described current collecting tank for fresh water from described fresh water grid.
As preferably, described membrane stack end is provided with end circle；Described dense water cavity includes dense water intake antrum and dense water water chamber；
Dense water inlet it is provided with on described bottom end cover；The space that described bottom end cover becomes with described end corral is dense water intake antrum；
Dense water out it is provided with on described upper end cover；The space that described upper end cover becomes with described end corral is dense water water chamber；
Described outer casing underpart side is provided with fresh water entrance；
It is provided with on described upper end cover for flowing to described current collecting tank and the water outlet communicated with described current collecting tank for fresh water from described fresh water grid.
Present configuration makes dense water enter from bottom end cover side, flows through closely located interelectrode dense network of rivers lattice, flows out from upper end cover side；Fresh water enters from electro-desalting assembly lower end, flows through fresh water grid and enters central canal, flows out from upper end cover top；This water flow mode can improve electro-desalting efficiency, makes utilization of energy more reasonable.
As preferably, described first electrode slice near described central canal side is positive plate, and described second electrode slice near described shell side is minus plate；
Described central canal side is provided with the anode connection circle for connecting described first electrode slice；
It is provided with for connecting described second electrode slice or cathode connection circle near described shell side.
When will be close to the electrode slice of described central canal side as positive plate, another electrode slice in shell side is then as minus plate, thus forms the electric field of the special distribution of the present invention；Certainly, the first electrode slice is also included within interior as minus plate, the second electrode slice as the structure of positive plate.The Yin/Yang pole wiring circle connecting electrode slice is used for making electro-desalting assembly connect external power source.
As preferably, described electrode includes negative electrode and anode；The insulating tape of described anode and correspondence constitutes anode pole hydroecium, and the insulating tape of described negative electrode and correspondence constitutes negative electrode pole hydroecium；
Several independent anodes being arranged in parallel and anode pole hydroecium form combined anode and combined anode pole hydroecium, and hydroecium gap, anode pole forms water distribution or the inlet of fresh water；
Several independent negative electrodes being arranged in parallel and negative electrode pole hydroecium form cathode assembly and cathode assembly pole hydroecium, and hydroecium gap, negative electrode pole forms water distribution or the inlet of fresh water；
Each described film bag includes anode pole hydroecium, negative electrode pole hydroecium and dense hydroecium, and the two ends of film bag are respectively anode pole hydroecium and negative electrode pole hydroecium, and the middle part of film bag is dense hydroecium.
As preferably, described end cap is provided with the described anode connection circle of connection or the wire pressed joint of cathode connection circle；And water collection circle in described anode pole is connected to the flexible pipe for being connected for the outflow of pole water with described negative electrode pole water collection circle.Use wire pressed joint can improve the safety that electro-desalting assembly uses.
Water leg and flexible pipe are set, make pole water separate outflow with dense water, it is simple to subsequent treatment.
As preferably, in described freshwater room and/or dense hydroecium, it is filled with ion exchange resin.
When filling ion-exchange resin in freshwater room, electro-desalting assembly of the present invention becomes EDI electric desalination device；When being not filled with ion exchange resin in freshwater room, electro-desalting assembly of the present invention is ED electrodialysis plant.
Accompanying drawing explanation
Fig. 1 is one film stacking structure schematic diagram of the present invention;
Fig. 2 is the electro-desalting component diagram of a kind of structure of the present invention;
Fig. 3 is the electro-desalting component diagram of another kind structure of the present invention；
Fig. 4 is the present invention dense moisture film bag structural representation；
Fig. 5 is fresh water flow passage unit schematic diagram of the present invention；
Fig. 6 is the dense water of the present invention and pole water flow passage cell schematics；
Fig. 7 is fresh water of the present invention, dense water and pole water flow passage unit overall schematic；
Fig. 8 is Fig. 3 electro-desalting assembly part A structure for amplifying schematic diagram；
Fig. 9 is the anode connection circle schematic diagram of a kind of optimal way of the present invention；
Figure 10 is the cathode connection circle schematic diagram of a kind of optimal way of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Fig. 1-Figure 10, membrane stack includes several film bags 1, dense network of rivers lattice 2 and fresh water grid 3, and each film bag 1 includes a piece of anion exchange membrane 11 and a piece of cation exchange membrane 12；Dense network of rivers lattice 2 are arranged between anion exchange membrane 11 and cation exchange membrane 12；Fresh water grid 3 is arranged between adjacent two film bags 1；The two ends of film bag 1 are provided with the first electrode slice 4 and the second electrode slice 5 for forming electric field；The length of the first electrode slice 4 or the second electrode slice 5 is less than anion exchange membrane 11 or the length of cation exchange membrane 12.First electrode slice 4 is arranged in anion exchange membrane 11 inner side relative with cation exchange membrane 12 i.e. film bag with the second electrode slice 5；Consider with pole moisture stream angle from by dense water, can be respectively arranged to be formed the insulating tape 10 of pole hydroecium at the first electrode slice 4 and the second electrode slice 5 end；And first one end of electrode slice 4 and the second electrode slice 5 flush with film bag 1 edge.The width of the first electrode slice 3 or the second electrode slice 5 is preferably equal to anion exchange membrane 111 or the width of cation exchange membrane 12.
Insulating tape 10 can use epoxy resin layer cast to form confining bed；The material of the first electrode slice 4 or the second electrode slice 5 can be the various metals that can conduct electricity, preferably copper electrode sheet or copper titanizing electrode slice.
The membrane stack of the present invention can be used for electro-desalting assembly.Such as, a kind of electro-desalting assembly includes membrane stack, shell 6, the central canal 7 being arranged in shell 6 and for sealing the end cap 8 at shell 6 two ends, and its film bag 1 makes cylinder along central canal 7；Central canal 7 surrounding has been evenly arranged current collecting tank 71；The first electrode slice 4 near central canal 7 side forms a pole of electrode, and the second electrode slice 5 near shell 6 side forms another pole of electrode；It is separately provided for connecting the first electrode slice 4 or the anode connection circle 14 of the second electrode slice 5 or cathode connection circle 15 near central canal 7 or near shell 6 side；End cap 8 includes upper end cover 81 and bottom end cover 82；The space for forming dense water cavity 9 it is provided with in end cap 8；It is separately provided on upper end cover 81 or bottom end cover 82 for concentrated stream through the dense water inlet 101 of dense network of rivers lattice 2 or dense water out 102；Shell 6 side is provided with the fresh water entrance 103 for flowing through fresh water grid 3 for fresh water；It is provided with on end cap 8 for flowing to current collecting tank 71 and the water outlet 104 communicated with current collecting tank 71 for fresh water from fresh water grid 3.It is provided with opening on anode connection circle 14 and collects circle 141 in order to form anode pole water；It is provided with opening on cathode connection circle 15 and collects circle 151 in order to form negative electrode pole water.This electro-desalting assembly has helical flow path structure and the near feature of interelectrode distance, and fluid can produce Dean stream in helical flow path, will reduce the thickness of diffusion layer, and strengthen mass transport process;Additionally, owing to the rolling of this electro-desalting assembly runner designs, reduce the thickness of diffusion layer, reduce film to resistance;Unidirectional current energy consumption will decline.It is freshwater room in fresh water grid, is dense hydroecium in the lattice runner of the dense network of rivers.
A kind of preferably water flow mode is: arrange end circle 83 in membrane stack end；Dense water cavity 9 includes dense water intake antrum 91 and dense water water chamber 92；Dense water inlet 101 it is provided with on bottom end cover 82；The space that bottom end cover 82 surrounds with end circle 83 is dense water intake antrum 91；Dense water out 102 it is provided with on upper end cover 81；The space that upper end cover 81 surrounds with end circle 83 is dense water water chamber 92；Side, shell 6 bottom is provided with fresh water entrance 103；It is provided with on upper end cover 81 for flowing to current collecting tank 71 and the water outlet 104 communicated with current collecting tank 71 for fresh water from fresh water grid 3.The first electrode slice 4 near central canal 7 side is positive plate, and the second electrode slice 5 near shell 6 side is minus plate；Central canal 7 side is provided with the anode connection circle 14 for connecting the first electrode slice 4；It is provided with for connecting the second electrode slice 5 or cathode connection circle 15 near shell 6 side.Now, the diameter of anode connection circle 14 is less than the diameter of cathode connection circle 15.
When arranging insulating tape 10, at the natural shape poling network of rivers, the two ends lattice of dense network of rivers lattice 2, certainly, it is possible to additionally arrange the other network of rivers, pole lattice 18 in the film bag space that insulating tape surrounds, to reduce energy consumption further.
Being provided with the wire pressed joint 13 of jointed anode wiring circle 14 or cathode connection circle 15 on end cap 8, wire pressed joint 13 is connected by wire 16 with anode connection circle 14 or cathode connection circle 15.Anode pole water collects circle 141 and negative electrode pole water is collected circle 151 and is connected to the flexible pipe 17 for flowing out for pole water.
When filling ion-exchange resin in freshwater room, electro-desalting assembly of the present invention becomes EDI electric desalination device；When being not filled with ion exchange resin in freshwater room, electro-desalting assembly of the present invention is ED electrodialysis plant.Certainly, in order to improve the velocity of ion exchange in dense hydroecium, it is also possible to filling ion-exchange resin in dense hydroecium further.
Consider from operation safety and angle device lifetime, also can be provided with neighbouring water outlet 104 further at end cap top and be provided with sealing ring 831 for compressing on the clamp nut 105 of water outlet 104, end circle 83 and being positioned at shell 6 inwall.
It is 640cm by making the gross area2Coiled electrodialyzer, and carried out experimentation, shown that coiled electrodialyzer has desalination rate high, the features such as aquifer yield is big, and energy consumption is low, and operation voltage is low.Using tap water as water inlet, the limiting current density of coiled electrodialyzer is up to 1.7mA/cm2, and conventional electrodialysis device limiting current density is less than 0.4mA/cm2;When electrical conductivity is between 350-2400 μ s/cm, using expression of first degree desalination, salt rejection rate is between 40-60.
Meanwhile, the impact of coiled electrodialyzer desalting performance is inquired into by feed flow rate.When electrical conductivity is more than 360 μ s/cm, and coiled electrodialyzer increases significantly than the per membrane area fresh water production ability of conventional electrodialysis device. fresh water production ability can improve more than 1 times.
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in scope of the presently claimed invention.
Claims (5)
1. a membrane stack, including film bag (1), dense network of rivers lattice (2) and fresh water grid (3), it is characterised in that: described film bag (1) includes anion exchange membrane (11) and cation exchange membrane (12)；
Described dense network of rivers lattice (2) is arranged between described anion exchange membrane (11) and cation exchange membrane (12)；
Described fresh water grid (3) is arranged on adjacent two described film bag gaps；
The two ends of described film bag (1) are provided with the first electrode slice (4) for forming electric field and the second electrode slice (5)；
The length of described first electrode slice (4) or the second electrode slice (5) is less than described anion exchange membrane (11) or the length of cation exchange membrane (12).
A kind of membrane stack the most according to claim 1, it is characterized in that: described film bag (1) also includes being arranged at the insulating tape (10) at two ends, described film bag (1) constitutes anode pole hydroecium, dense hydroecium and negative electrode pole hydroecium successively by described first electrode slice (4), the second electrode slice (5) and described insulating tape (10).
3. include an electro-desalting assembly for claim 1-2 any one membrane stack, the central canal (7) also include shell (6), being arranged in described shell (6) and the end cap (8) being used for sealing described shell (6) two ends, it is characterised in that:
Described anion exchange membrane (11) and cation exchange membrane (12) are alternately arranged, and described dense network of rivers lattice (2) and fresh water grid (3) are alternately arranged；
Described film bag (1) is connected by described central canal (7) and makes cylinder along described central canal (7)；
Described central canal (7) surrounding has been evenly arranged current collecting tank (71)；
One pole of described first electrode slice (4) the composition electrode near described central canal (7) side, another pole of described second electrode slice (5) the composition electrode near described shell (6) side.
4. an electro-desalting assembly according to claim 3, it is characterised in that:
Described electrode includes negative electrode and anode；The insulating tape of described anode and correspondence constitutes anode pole hydroecium, and the insulating tape of described negative electrode and correspondence constitutes negative electrode pole hydroecium；
Several independent anodes being arranged in parallel and anode pole hydroecium form combined anode and combined anode pole hydroecium, and hydroecium gap, anode pole forms water distribution or the inlet of fresh water；
Several independent negative electrodes being arranged in parallel and negative electrode pole hydroecium form cathode assembly and cathode assembly pole hydroecium, and hydroecium gap, negative electrode pole forms water distribution or the inlet of fresh water；
Each described film bag includes anode pole hydroecium, negative electrode pole hydroecium and dense hydroecium, and the two ends of film bag are respectively anode pole hydroecium and negative electrode pole hydroecium, and the middle part of film bag is dense hydroecium.
5. an electro-desalting assembly according to claim 4, it is characterised in that: what several were independent be parallel to male or female that central canal arranges around central canal in uniformly or non-uniformly arranged；Electrode vertical centre tube section forms similar round or radially.
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| CN105800744A (en) * | 2016-05-17 | 2016-07-27 | 哈尔滨工业大学 | Portable seawater desalting device and water purifying cup including same |
| CN107265576B (en) * | 2017-07-19 | 2024-03-15 | 浙江安耐杰科技股份有限公司 | Conductive terminal of electro-adsorption desalting module |
| KR102211117B1 (en) * | 2018-01-15 | 2021-02-03 | 코웨이 주식회사 | Electro-deionization filter |
| CN110550787B (en) * | 2019-08-20 | 2021-12-07 | 生态环境部华南环境科学研究所 | Desalting treatment equipment and method for fertilizer utilization of cow breeding wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111039365A (en) * | 2018-10-15 | 2020-04-21 | 宁波方太厨具有限公司 | Self-generating capacitor deionization device |
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| CN104556315A (en) | 2015-04-29 |
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Denomination of invention: Membrane stack and electric desalting assembly Effective date of registration: 20211015 Granted publication date: 20160824 Pledgee: South Taihu New Area sub branch of Huzhou Wuxing Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG CATHAYRIPE ENVIRONMENTAL ENGINEERING Co.,Ltd. Registration number: Y2021330001922 |
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Date of cancellation: 20230321 Granted publication date: 20160824 Pledgee: South Taihu New Area sub branch of Huzhou Wuxing Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG CATHAYRIPE ENVIRONMENTAL ENGINEERING Co.,Ltd. Registration number: Y2021330001922 |