CN109012203A - A kind of bipolar membrane electrodialysis device - Google Patents
A kind of bipolar membrane electrodialysis device Download PDFInfo
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- CN109012203A CN109012203A CN201811212539.8A CN201811212539A CN109012203A CN 109012203 A CN109012203 A CN 109012203A CN 201811212539 A CN201811212539 A CN 201811212539A CN 109012203 A CN109012203 A CN 109012203A
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Classifications
-
- 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
- B01D61/48—Apparatus therefor having one or more compartments filled with ion-exchange material, e.g. electrodeionisation
- B01D61/485—Specific features relating to the ion-exchange material
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Urology & Nephrology (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention relates to a kind of bipolar membrane electrodialysis devices, bipolar membrane electrodialysis device includes several diaphragms and dialysing compartment, several diaphragms include at least two panels Bipolar Membrane, at least a piece of anode membrane and at least a piece of cavity block, to form at least three compartments being made of at least one alkaline chamber, at least one salt room and at least one acid compartment in dialysing compartment；Wherein, respectively corresponding flexible joint according to the inner wall for being close contact in dialysing compartment by way of capable of allowing the mobile volume for changing adjacent compartments in turn of corresponding diaphragm under adjacent compartments differential pressure action around every diaphragm.Diaphragm is connected to dialysing compartment by flexible joint by the present invention in a manner of mobilizable, allow corresponding diaphragm mobile under adjacent compartments differential pressure action with this and then changes the volume of the adjacent compartments, and then pass through the mobile pressure difference quickly to reduce adjacent compartments of diaphragm in flowed fluctuation, it reduces and is leaked caused by pressure difference, and frequently adjustment feed liquor flow or out flow quantity, economical and efficient are not had to.
Description
Technical field
The present invention relates to water treatment field more particularly to a kind of bipolar membrane electrodialysis devices.
Background technique
It is cation exchange layer on one side that Bipolar Membrane, which is a kind of, and another side is the laminar films of anion exchange layer, cation
It is water layer at switching layer and the border of anion exchange layer, under the action of applying direct current electric field, the water-splitting of water layer is at H+With
OH-, and pass through cation exchange layer and anion exchange layer respectively.Duplicature is the key that the portion bipolar membrane electrodialysis (BPED)
Part.BPED is exactly that salt is changed into bronsted lowry acids and bases bronsted lowry using the selective penetrated property that Bipolar Membrane dissociates water and anions and canons exchange membrane
Electrodialysis plant.
Under DC electric field effect, directional migration occurs for the ion in solution, and the cation permeable anode membrane in salt room is double
The negative layer of pole film stops and stays in alkaline chamber, while the OH that Bipolar Membrane dissociation water generates-Through after the negative layer of Bipolar Membrane by anode membrane
Stop and stay in alkaline chamber, this creates the terminal alkali；Anion-permeable cavity block in salt room, stopped by the positive layer of Bipolar Membrane and
Stay in acid compartment, while the H that Bipolar Membrane dissociation water generates+Acid compartment is stayed in through being stopped after the positive layer of Bipolar Membrane by cavity block, this
Sample just produces acid；Since the ion of salt room solution is all to reach fading effect with the time towards external migration.
From mid-term the 1950s, there have been development process can be divided into three to research report in relation to Bipolar Membrane
Stage: the 1950s first stage mid-term to the initial stage eighties, this is that Bipolar Membrane develops very slow period, Bipolar Membrane
It is only by two panels anion and cation exchange membrane direct pressing, poor performance, water decomposition voltage is tens times higher than theoretical pressure drop, using grinding
Study carefully the laboratory stage being also in based on water decomposition；Second stage is from early 1980s to the beginning of the nineties, due to double
The improvement of pole membrane preparation technology successfully has developed monolithic type Bipolar Membrane, and performance greatly improves, in relieving haperacidity alkali and desulfurization
It is applied successfully in technology, commodity Bipolar Membrane occurs in this stage.It so far from early 1990s, is that Bipolar Membrane is fast
It is the period of speed development, enterprising from membrane structure, membrane material and preparation process with the further investigation to Bipolar Membrane course of work mechanism
It has gone significant improvement, the performance of Bipolar Membrane is made to be greatly improved, wherein the improvement mainly to cavity block and anode membrane contact interface,
" monolithic type " structure occurred since initial simple " pressurized layer type " or " coating type " structure to early 1980s, then
Occur greatly reducing membrane voltage with the labyrinth of intermediate " Catalytic Layer " again.Bipolar membrane electrodialysis technology is in optimization tradition
Original effect has been played in industrial process and new industrial process.
The Chinese patent literature of Publication No. CN2825084Y discloses a kind of concentration electric dialyzator, it includes ion exchange
Film, partition and yin, yang electrode plate, and sealing lining ring is respectively equipped between homogeneous ion-exchange membrane and partition, medium between anodic-cathodic plate；
In addition it is embedded with electrode solution in medium between anodic-cathodic plate and reaction product draws round tube, substitutes the square groove milling electrode solution on primary electrode frame
Draw road.The utility model ensure that between dense, freshwater room never string leakage, at the same in electrode chamber electrode solution and reaction product row
It is more unobstructed out, no dead angle, it is ensured that production safety.The utility model is especially suitable for the concentration extraction noble dilute metal from solution.But
It is the leakage of string described in the utility model, is for diaphragm is mounted on the technical solution of a dialysis slot, if diaphragm is installed
In dialysis slot, when sealing loosely with the binding site of dialysis slot, then it is easy to happen string leakage.So diaphragm is passed through the side of stacking
Formula constitutes membrane stack, prevents string from leaking, but not in view of leakage problems caused by adjacent compartments pressure difference.
The Chinese patent literature of Publication No. CN106630040A disclose a kind of selective bipolar membrane electrodialysis system and
It is applied comprising electrodialysis membrane stack and the anode plate and cathode plate by Boards wall in electrodialysis membrane stack two sides；Electric osmose
Analysis membrane stack forms after successively alternately being laminated by several functional membranes plus runner filter and gasket seal；Functional membrane includes Bipolar Membrane
Film is selectively penetrated with a multivalent ion；The anion exchange layer of Bipolar Membrane is towards anode plate, and cation exchange layer is towards cathode
Plate.Bipolar membrane electrodialysis and selective electrodialysis are incorporated in same device by the selective bipolar membrane electrodialysis system of the invention
It is interior, when for the desalination of saliferous feed liquid and production soda acid, the two is merged into the same operation, simplifies process, reduces operation
Amount, reduces electrode reaction energy consumption, improves production efficiency.But the diaphragm of the invention is still fixed, not can solve phase
Leakage problems caused by adjacent compartment pressure difference.
To sum up, the diaphragm of existing electrodialysis plant is fixed relative to electrodialysis chamber, in the case, water flowing process
In, it can inevitably lead to the presence of pressure difference between the two between adjacent compartments because of a variety of causes, to cause to leak.Leakage refers to
In diaphragm two sides under the action of pressure difference, the solution in high pressure side compartment is caused to leak to low pressure side compartment, so that some ions exist
Be mixed into during leakage the producer be not intended to its occur compartment in, thus reduce electrodialysis filtering efficiency and can also shadow
Ring the purity of final products.And a key factor for influencing pressure difference variation is the flow of pump, and the flow pumped is actually not
Constant, it all may cause pressure difference in reasons such as the component wears of voltage fluctuation, frequency fluctuation, pumping, such as damage in impeller and become
Change.Pressure difference caused by flowed fluctuation is changed, simple adjusts after the pressure gauge monitoring pressure being arranged near water inlet
The operation of the water yield of the water supply or corresponding water outlet of whole corresponding supply pump is blunt and uneconomic.Moreover, pressure
Difference is also possible to the problem of leading to diaphragm deformation, damage and/or the increase of the risk of leak.
But currently, the technology that the field solves leakage is all to have surveyed pressure difference by the pressure difference of pressure measurement adjacent compartments
Later by adjust respective compartment feed liquor flow or out flow quantity come reduce pressure difference reduce leakage, as previously mentioned, this
Kind of operation is blunt and uneconomic, and if frequent control pump adjust pump discharge, be also easy to cause the damage of pump, because
This, this field is badly in need of improving the structure of electrodialysis plant, to solve the problems, such as leakage from another one completely new angle.
Summary of the invention
For the deficiencies of the prior art, the present invention provides a kind of bipolar membrane electrodialysis device, bipolar membrane electrodialysis dresses
It sets and diaphragm is connected to by dialysing compartment in a manner of mobilizable by flexible joint, allowed under adjacent compartments differential pressure action with this
Corresponding diaphragm is mobile and then changes the volume of the adjacent compartments, and then mobile with fast prompt drop by diaphragm in flowed fluctuation
The pressure difference of low adjacent compartments is reduced and is leaked caused by pressure difference, and does not have to frequently adjustment feed liquor flow or out flow quantity, economical high
Effect.
According to a preferred embodiment, a kind of bipolar membrane electrodialysis device, if the bipolar membrane electrodialysis device includes
Dry film piece and dialysing compartment, several diaphragms include at least two panels Bipolar Membrane, at least a piece of anode membrane and at least a piece of cavity block, with
At least three compartments being made of at least one alkaline chamber, at least one salt room and at least one acid compartment are formed in dialysing compartment；Wherein,
It is corresponding according to that can allow under adjacent compartments differential pressure action by corresponding flexible joint respectively around the every diaphragm
Diaphragm is mobile and then the mode of the volume that changes the adjacent compartments is close contact in the inner wall of dialysing compartment.
According to a preferred embodiment, at least part of the dialysing compartment is by several dismountable first sealings
Frame stack and between adjacent first sealing frame in such a way that fastener compresses contiguity the chamber that constitutes, and it is each first close
The a piece of diaphragm of setting, every diaphragm in frame is sealed to pass through at least one independent flexible joint respectively and be close contact in first sealing frame
Inner wall.
It is after the flexible joint is installed in place in first sealing frame but described according to a preferred embodiment
Before first sealing frame does not also stack compression, the both ends for the edge of the flexible joint being connect with first sealing frame
It is extend out to except first sealing frame respectively, after the first sealing frame is stacked and compressed, adjacent two edges stretch out the
Part except one sealing frame abuts each other that contiguity is realized in compression.
According to a preferred embodiment, before first sealing frame does not also stack compression, the edge is stretched out
Part except first sealing frame is towards inclined within the first seal frame, so as to laminate in two neighboring first sealing frame heap
In tight process, the part that adjacent edge is stretched out except the first sealing frame abut each other after towards the first sealing frame convex
It realizes and touches out, in the junction of two adjacent edges after contiguity, form the projecting inward of inside first sealing frame
Wedge-type seal cross section.
According to a preferred embodiment, the flexible joint, which includes at least, is respectively provided with dual extension-compression modulus and each other
The first section and the second section of contiguity, the first elasticity modulus of first section are greater than the springform of second section
Amount, for first section for connecting the first sealing frame, a part of second section is close contact in first section, described
Another part of second section is close contact in corresponding diaphragm.
According to a preferred embodiment, the bipolar membrane electrodialysis device further includes several limiting sections, corresponding to limit
Portion is used to limit the corresponding diaphragm extreme position mobile to two compartment adjacent with the diaphragm.
According to a preferred embodiment, the limiting section is limit rotary shaft and several first limits that diaphragm two sides are arranged in
Position column and several second limited posts；The water inlet of each compartment by make respectively every the entirety of indoor water flow flow to it is identical in a manner of set
It sets in the first side of electrodialysis plant, the water outlet side of each compartment is second side of electrodialysis plant；The limit
One end of close second side of corresponding diaphragm is arranged in shaft, and the first limited post and the second limited post are distributed in corresponding diaphragm
Two sides be used to limit the extreme position that the diaphragm is rotated to two compartments adjacent with the diaphragm；Turn in diaphragm around the limit
After axis is pivotally moved to extreme position, diaphragm is resisted against on the first limited post or the second limited post to hinder at least one direction
Diaphragm is hindered further to rotate.
According to a preferred embodiment, when the diaphragm is resisted against on the first limited post, first stroke can be triggered and held
It closes；After the controller of the bipolar membrane electrodialysis device detects the state that first stroke switch is triggered, described in increasing
The feed liquor flow of compartment where first stroke switch, reduce first stroke switch where compartment go out flow quantity, reduce the
At least one gone out in flow quantity of compartment where the feed liquor flow of compartment, the increase second stroke switch where two travel switches
Kind of control mode reduce the pressure difference of two compartments until the diaphragm and first limited post be detached from against；And/or the film
When piece is resisted against on the second limited post, second stroke switch can be triggered；The controller of the bipolar membrane electrodialysis device detects
After the state being triggered to second stroke switch, by the feed liquor flow of compartment where reducing the first stroke switch, increase
The feed liquor flow for going out flow quantity, increasing compartment where second stroke switchs of compartment where the first stroke switch reduces institute
Compartment where stating second stroke switch go out at least one of flow quantity control mode reduce the pressure difference of two compartments until
The diaphragm and second limited post be detached from against.
According to a preferred embodiment, the first stroke switch is mounted on diaphragm, is mounted on the first limited post
On end or directly as the first limited post；And/or the second stroke switch is mounted on diaphragm, is mounted on the second limit
On the end of column or directly as the second limited post.
According to a preferred embodiment, the controller of the bipolar membrane electrodialysis device detects that first stroke switchs quilt
After the state of triggering, the state being triggered to first stroke switch carries out timing, first to be only triggered in first stroke switch
When duration is more than the first preset threshold, just pass through the feed liquor flow of compartment where increasing the first stroke switch, reduction institute
State the flow quantity out of compartment where first stroke switchs, reduction second stroke switchs described in the feed liquor flow of place compartment, increase
At least one of the flow quantity control mode that goes out of compartment where second stroke switch makes the pressure difference of two compartments be contracted to the film
Piece and first limited post be detached from against；And/or the controller of the bipolar membrane electrodialysis device detects that second stroke is opened
After closing the state being triggered, the state being triggered to second stroke switch carries out timing, is only touched in second stroke switch
When second duration of hair is more than the second preset threshold, just pass through the feed liquor stream of compartment where reducing the first stroke switch
The feed liquor flow of compartment where the going out flow quantity, increase second stroke switch of compartment where measuring, increasing first stroke switch,
At least one of the flow quantity control mode that goes out of compartment where reducing the second stroke switch makes the pressure difference of two compartments contract
As low as the diaphragm and second limited post be detached from against.
Detailed description of the invention
Fig. 1 is the rough schematic view of a preferred embodiment of the present invention；
Fig. 2 is that the present invention is shown using the simplification structure of the preferred embodiment for the dialysing compartment being made of upper and lower two housing sections
It is intended to；
Fig. 3 is the preferred embodiment that the present invention stacks the dialysing compartment constituted using the first sealing frame and the second sealing frame
Simplified structure diagram；
Fig. 4 is the structural schematic diagram that diaphragm is mounted in the first sealing frame；
Fig. 5 is the decomposition diagram of structure shown in Fig. 4；
Fig. 6 is the simplified cross-sectional view of structure shown in Fig. 4；
Fig. 7 is the simplified cross-sectional view under two the first sealing frames stacking impaction states；
Fig. 8 is the rough schematic view of a preferred embodiment of the present invention；
Fig. 9 is the module connection diagram of parts of electrical components of the present invention；
Figure 10 is the indoor rough schematic view of alkali of a preferred embodiment of the present invention；With
Figure 11 is the module connection figure of a preferred embodiment of the present invention.
Reference signs list
100: diaphragm 110: Bipolar Membrane 120: anode membrane
130: cavity block 200: dialysing compartment 200A: upper housing
200B: lower case the 200D: the second sealing frame of the 200C: the first sealing frame
210: alkaline chamber 220: salt room 230: acid compartment
240: positive electrode chamber 250: negative electricity pole room 300: flexible joint
310: the first section, 320: the second section 300A: edge
410: the first limited post, 420: the second limited post 430: limit rotary shaft
510: first stroke switch 520: second stroke switch 600: controller
700: ion exchange resin 800: water A: wedge-type seal cross section
Specific embodiment
It 1,2,3,4,5,6,7,8 and 9 is described in detail with reference to the accompanying drawing.
In the description of the present invention, it is to be understood that, if occur term " center ", " longitudinal direction ", " transverse direction ", " length ",
" width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside",
The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for
Convenient for the description present invention and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In the description of the present invention, it is also necessary to which understanding is only used for retouching if there are the terms such as " first ", " second "
Purpose is stated, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.By
This defines " first ", the feature of " second " can explicitly or implicitly include one or more of the features.In this hair
In bright description, if there are term " multiple ", it is meant that two or more, unless otherwise specifically defined.
In the description of the present invention, it is also necessary to understanding, if occur " installation ", " connected ", " connection ", " fixation ", " Gu
Connect " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention unless otherwise specific regulation and/or limits.
In the description of the present invention, it is also necessary to which understanding is unless specifically defined or limited otherwise, fisrt feature is
The "upper" of two features or "lower" may include that the first and second features directly contact, also may include the first and second features not
It is direct contact but by the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " on
Side " and " above " include fisrt feature right above second feature and oblique upper, or are merely representative of first feature horizontal height height
In second feature.Fisrt feature under the second feature " below ", " below " and " below " include fisrt feature second feature just under
Side and obliquely downward, or first feature horizontal height is merely representative of less than second feature.
Embodiment 1
Present embodiment discloses a kind of bipolar membrane electrodialysis devices, in the case where not causing conflict or contradictory situation, other
The entirety and/or partial content of the preferred embodiment of embodiment can be used as the supplement of the present embodiment.
According to a preferred embodiment, referring to Fig. 1, a kind of bipolar membrane electrodialysis device, bipolar membrane electrodialysis device can
To include several diaphragms 100 and dialysing compartment 200.Several diaphragms 100 may include at least two panels Bipolar Membrane 110, at least a piece of sun
Film 120 and at least a piece of cavity block 130, to be formed in dialysing compartment 200 by least one alkaline chamber 210,220 and of at least one salt room
At least three compartments of at least one acid compartment 230 composition.Corresponding flexible connection can be passed through around every diaphragm 100 respectively
Portion 300 is according to the volume that can allow the mobile adjacent compartments of change in turn of corresponding diaphragm 100 under adjacent compartments differential pressure action
Mode is close contact in the inner wall of dialysing compartment 200.Preferably, corresponding flexible connection can be passed through respectively around every diaphragm 100
Portion 300 is according to the volume that can allow the mobile adjacent compartments of change in turn of corresponding diaphragm 100 under adjacent compartments differential pressure action
The form of presentation that the another kind that mode is close contact in the inner wall of dialysing compartment 200 can substitute is divided around the every diaphragm 100
Not Tong Guo corresponding flexible joint 300 be close contact in the inner wall of dialysing compartment 200, flexible joint 300 is according to can be in adjacent compartments
The mode for the volume for allowing corresponding diaphragm 100 mobile under differential pressure action and then changing the adjacent compartments is arranged.Pass through the party
Formula, the present invention can be by the changes of volume come the change of pressure difference caused by alleviation flow short-time fluctuations adaptive in a certain range
Change, be swift in response and be not necessarily to that often the flow of pump is adjusted, economical and efficient.Preferably, in the present invention, for letter
It states, diaphragm 100 can refer at least one of Bipolar Membrane 110, anode membrane 120 and cavity block 130.Preferably, in two panels Bipolar Membrane
It 110, can be according to Bipolar Membrane 110, anode membrane 120, cavity block 130 and bipolar in the case where a piece of anode membrane 120 and a piece of cavity block 130
The sequence of film 110 is set gradually.Anode membrane 120, cavity block 130 and Bipolar Membrane 110 can be used as repetitive unit and be arranged to constitute membrane stack,
To improve efficiency.That is, can be according to Bipolar Membrane 110, anode membrane 120, cavity block 130, Bipolar Membrane 110, anode membrane 120, cavity block in membrane stack
130, Bipolar Membrane 110, anode membrane 120, cavity block 130, Bipolar Membrane 110 ... sequence set gradually.The material example of flexible joint
It such as can be poly- using nitrile rubber, butyl rubber, hydrogenation nitrile rubber, EP rubbers, fluorubber, polyurethane rubber, chlorosulfonation
At least one of ethylene rubber, epichlorohydrin rubber and chlorinated polyethylene rubber.Processing of some waste water by equipment such as clarifying basins
Afterwards, may be relatively high into the temperature of bipolar membrane electrodialysis device, being passed through bipolar membrane electrodialysis device under uncolled state can
Flexible joint can be damaged.Therefore, in such a case, it is possible to first be cooled in certain temperature range, for example,+40 DEG C with
Under, it is then passed through bipolar membrane electrodialysis device again.But not necessarily to cool down, for example, flexible joint using fluorubber then without
It need to first cool down, because the use temperature range of fluorubber is -20 DEG C~+200 DEG C.
According to a preferred embodiment, a kind of bipolar membrane electrodialysis device, if bipolar membrane electrodialysis device may include
Dry film piece 100 and dialysing compartment 200.Several diaphragms 100 may include at least two panels Bipolar Membrane 110, at least a piece of anode membrane 120 and extremely
Few a piece of cavity block 130.At least two panels Bipolar Membrane 110, at least a piece of anode membrane 120 and at least a piece of cavity block 130 can be set and seeping
It analyses in room 200 to form at least one alkaline chamber 210, at least one salt room 220 and at least one acid compartment 230.Every Bipolar Membrane
It 110, can be respectively by corresponding flexible joint 300 according to can be with adjacent around every anode membrane 120 and every cavity block 130
Compartment pressure difference and the mode for adjusting position is close contact in the inner wall of dialysing compartment 200.Preferably, compartment can refer to alkaline chamber 210, salt room
At least one of 220 and acid compartment 230.Compartment can also criticize at least one of electrode chamber 240 and negative electricity pole room 250, just
The setting position and set-up mode of electrode chamber 240 and negative electricity pole room 250 are the common knowledges of this field, are not repeated herein.Below
Illustrate the principle of bipolar membrane electrodialysis device relieving haperacidity alkali by taking Fig. 1 as an example.The membrane body fixed group of anode membrane 120 itself has negative electrical charge
Ion, therefore repel negatively charged anion by selecting through cation.The membrane body fixed group band of cavity block 130 itself
There is positive charge ion, therefore repels positively charged cation by selecting through anion.Saline solns containing salt MX
Enter from the water inlet of salt room 220, under the action of electric field, 220 cation of salt room is migrated to cathode direction, cationic M+Pass through
Anode membrane 120 enters alkaline chamber 210, the OH ionized out with Bipolar Membrane 110-In conjunction with generation alkali MOH.And the anion in salt room 220 is then
It is migrated to anode direction, anion X-Enter alkaline chamber 210, the H ionized out with Bipolar Membrane 110 by cavity block 130+It is sour in conjunction with being formed.
In this way, the salt in salt room 220 is removed, and it is converted into corresponding acid HX and alkali MOH.Preferably, anode membrane 120 is properly termed as sun again
Amberplex.Cavity block 130 is properly termed as anion-exchange membrane again.The water inlet of alkaline chamber 210 and/or the water inlet of acid compartment 230
Water 800 can be sent into.
According to a preferred embodiment, dialysing compartment 200, which can be, assembles the seal chamber constituted by least two housing sections
Body, diaphragm 100 is by being bonded, being bolted, be clamped and at least one of snapping mode is close contact in dialysing compartment 200.Every
Diaphragm 100 can respectively by least one independent flexible joint 300 be close contact in this at least two housing sections assembling infiltration
Analyse the inside of room 200.For example, upper housing 200A shown in Figure 2 and lower case 200B.Lower case 200B can be in upper end opening
Hollow cavity, inside, which is provided with, is equipped with mounting groove for installing diaphragm 100, and after being installed in place, seam crossing can smear sealing
Glue.For the ease of maintenance, the top of flexible joint 300 can be stretched out except hollow cavity, and upper housing 200A is in lower case
Sealing is realized by compressed flexible interconnecting piece 300 after 200B is upper.
According to a preferred embodiment, referring to Fig. 3,4 and 5, at least part of dialysing compartment 200 can by several
Disassembly the first sealing frame 200C stack and adjacent first sealing frame 200C between fastener compress contiguity by way of structure
At chamber.At least a piece of diaphragm 100 can be set in each first sealing frame 200C.Every diaphragm 100 can pass through respectively
At least one independent flexible joint 300 is close contact in the inner wall of first sealing frame 200C.Those skilled in the art can think
The second sealing frame 200D only open at one end is equipped with to the both ends of, dialysing compartment 200, for the both ends to dialysing compartment 200 into
Row closing.First sealing frame 200C and the second sealing frame 200D contiguity constitutes positive electrode chamber 240 and/or negative electricity pole room 250.
According to a preferred embodiment, referring to Fig. 6, the side of flexible joint 300 being connect with the first sealing frame 200C
The width of edge position 300A can be greater than the width at remaining position of flexible joint 300.Preferably, flexible joint 300 exists
After being installed in place on first sealing frame 200C but before the first sealing frame 200C also do not stack compression, the both ends of edge 300A can
Extend out to except the first sealing frame 200C respectively.After the first sealing frame 200C is stacked and is compressed, two adjacent edges
The part that 300A stretches out except the first sealing frame 200C can abut each other that contiguity is realized in compression.The preferred embodiment at least has
There are three advantageous effects.First, when installing flexible joint 300, the part stretched out by both ends as positioning datum,
It improves installation speed and reduces fabrication error.Is especially placed in except the first sealing frame 200C in flexible joint 300
When in one sealing frame 200C, installation personnel can be helped to reduce a large amount of adjustment time；Second, one of inside installation is flexible even
The partial action power that itself bears can be passed to neighbouring flexible joint when pressure difference generates deformation by socket part 300
300, so that the pressure that itself connector is carried is dispersed, it can not only reduce sealant, bolt or the connection of rivet one kind
The usage amount of part, moreover it is possible to reduce the leakage problems of the adjacent compartments caused due to connector loosens or falls off；Third, it is existing
The membrane stack being made up of stack manner is usually because sealing by this way, is equivalent to again loosely with outside seepy question
Inside dexterously increases once sealing leakproof, and in the prior art, the problem of membrane stack leak can also be greatly improved.It is preferred that
Ground, it is fixed that the part that edge 300A stretches out except the first sealing frame 200C is at least equipped in the first sealing frame 200C of direction on one side
Position reference line, the color of position baseline are different from removing on any color possessed by the first sealing frame 200C and flexible connecting member
Any color possessed by other parts outside position baseline.For example, the first sealing frame 200C has silver color and two kinds of black
Color, flexible connecting member have a kind of color of milky, then position baseline can be set as to red, yellow, purple or green.
According to a preferred embodiment, referring to Fig. 6 and 7, before the first sealing frame 200C does not also stack compression, edge part
The part that position 300A stretches out except the first sealing frame 200C can be towards the tilted of the first sealing frame 200C frame, so that adjacent two
During a first sealing frame 200C stacks compression, adjacent edge 300A stretches out the portion except the first sealing frame 200C
Divide after abutting each other and touch towards the projecting inward realization of the first sealing frame 200C, two adjacent edge 300A's after contiguity
Junction forms the projecting inward wedge-type seal cross section A of an inside first sealing frame 200C.Preferably, edge
The part that 300A stretches out except the first sealing frame 200C is smaller according to the free end thickness closer to the both ends of edge 300A
Mode be arranged.As a result, in the junction of two adjacent edge 300A, formed an inside first sealing frame 200C it
Projecting inward wedge-type seal cross section A.By this way, it at least can be realized two advantageous effects: first, in compartment
In the case where hydraulically full, the wedge-type seal cross section two sides A are by squeeze, and the situation bigger in internal hydraulic pressure
Under, the extruding force that the two is subject to each other is bigger, in conjunction with it is closer, the water in compartment is less susceptible to leak between the gap of the two
Out；It the part that second, edge 300A stretch out except the first sealing frame 200C will not be to the first sealing frame after abutting each other
Direction except 200C is protruded and is compressed in the gap between two the first sealing frame 200C, not will cause the first sealing frame
The problem of 200C touches loosely；Third after forming wedge-type seal cross section A, forms two edges in the A of wedge-type seal cross section
Position 300A can reduce edge 300A from first to the active force of other side one the first sealing frame 200C of direction each other
A possibility that sealing frame 200C is removed, plays the effect of anti-removing.
Preferably, the first sealing frame 200C and edge 300A is equipped with water passage.For example, the first sealing frame 200C
With semicircle shape notch can be equipped on the 300A of edge, with to form water flowing logical for split after two the first sealing frame 200C touch
Road.Alternatively, can correspond to each other on the first sealing frame 200C and edge 300A be equipped with water passage, i.e., it is unspliced
The water passage of unitary form.The cross-sectional area of water passage on first sealing frame 200C frame is greater than on the 300A of edge
The cross-sectional area of water passage, with this in the case where installing water pipe, edge 300A can closely embrace water service pipe
A possibility that road, reduction leak.Moreover, water pipe is to intert to be installed into edge outside to inside from the first sealing frame 200C
300A's, make the flexible position at the water passage of edge 300A to the projecting inward of the first sealing frame 200C with this, constitutes
Better seal effect.Those skilled in the art are also contemplated that there are also others in the first sealing frame 200C for this field
The prior art of upper installation water inlet and/or water outlet, also can be applied in the present invention, does not repeat herein.
According to a preferred embodiment, referring again to Fig. 4,5 and 6, flexible joint 300 may include being respectively provided with not
The first section 310 and the second section 320 touched with elasticity modulus and each other.First elasticity modulus of the first section 310 can be with
Greater than the elasticity modulus of the second section 320.First section 310 can be used for connecting the first sealing frame 200C.Second section 320
A part can be close contact in the first section 310.Another part of second section 320 can be close contact in corresponding diaphragm 100.This is excellent
Selecting embodiment at least to have, there are three advantageous effects, and the elasticity modulus of the first, first section 310 is bigger, so that it is resisted
The ability of deformation is stronger, is more suitable for the position connecting with the first sealing frame 200C, by bonding, rivets or the side of being bolted
After formula is connected to the first sealing frame 200C, deflection is smaller relative to the second section 320, smaller to the impact of connecting portion,
It reduces a possibility that connecting portion loosens and improves the service life of connecting portion；The second, the second section 320 can use smaller
Elasticity modulus can respond more quickly pressure difference variation；Third, in the case where same deflection, smaller elasticity modulus draws
The pressure difference variation risen is smaller, specifically, when on high-tension side liquid-driving diaphragm 100 moves a distance, flexible joint 300
The restoring force for allowing diaphragm 100 to keep in the center can be generated, this restoring force acts on on high-tension side liquid, can allow high-pressure side
Certain pressure difference is generated with low-pressure side, therefore, in the case where same deflection, the second section 320 possesses smaller springform
The variation of pressure difference caused by measuring is smaller, is less susceptible to leakage caused by causing pressure difference.
According to a preferred embodiment, referring to Fig. 8, bipolar membrane electrodialysis device can also include several limiting sections.Phase
The limiting section answered can be used for limiting corresponding diaphragm 100 extreme position mobile to two compartment adjacent with the diaphragm 100.
For example, limiting section can be limit rotary shaft 430 and several first limited posts 410 and several second that 100 two sides of diaphragm are arranged in
Limited post 420.The water inlet of each compartment by make respectively every the entirety of indoor water flow flow to it is identical in a manner of electrodialysis is set
First side of device.The water outlet side of each compartment can be second side of electrodialysis plant.Limit rotary shaft 430 can be with
One end of close second side of corresponding diaphragm 100 is set, and the first limited post 410 and the second limited post 420 are distributed in accordingly
The two sides of diaphragm 100 be used to limit the extreme position that the diaphragm 100 is rotated to two compartments adjacent with the diaphragm 100,
After diaphragm 100 is pivotally moved to extreme position around limit rotary shaft 430, diaphragm 100 is resisted against the first limited post 410 or the second limit
To hinder diaphragm 100 further to rotate at least one direction on column 420.But limit is not necessarily arranged in limiting section
Shaft 430, the diaphragm 100 can be connected only by flexible joint 300, for example, limiting section is arranged in the first sealing frame
Several third limited posts and several 4th limited posts on 200C, third limited post and the 4th limited post are distributed in corresponding diaphragm
100 two sides are used to limit the diaphragm 100 extreme position mobile to two compartment adjacent with the diaphragm 100, in diaphragm 100
After moving to extreme position, diaphragm 100 is resisted against on third limited post or the 4th limited post to hinder at least one direction
Diaphragm 100 is further mobile.Third limited post can at least be arranged four, positioned at the close cathode of corresponding diaphragm 100
Side is simultaneously distributed setting for against the quadrangle of the diaphragm 100.For another example, limiting section is distributed across the limit of the two sides of diaphragm 100
One end of position rope and/or check chain, limit rope and/or check chain is connected to the first sealing frame 200C, limit rope and/or check chain
The other end be connected to diaphragm 100, for limiting the diaphragm 100 limit mobile to two compartment adjacent with the diaphragm 100
Position, after diaphragm 100 moves to extreme position, limit rope and/or check chain are straightened to hinder at least one direction
Diaphragm 100 is further mobile.Limit rope and/or check chain can at least be arranged four, and are distributed and are arranged in the four of diaphragm 100
Angle.
It,, can be with when diaphragm 100 is resisted against on the first limited post 410 referring to Fig. 8 and 9 according to a preferred embodiment
Trigger first stroke switch 510.The controller 600 of bipolar membrane electrodialysis device detects what first stroke switch 510 was triggered
It, can be where by increasing the feed liquor flow of 510 place compartment of first stroke switch, reducing first stroke switch 510 after state
The feed liquor flow for going out flow quantity, reducing 520 place compartment of second stroke switch of compartment increases 520 place of second stroke switch
At least one of the flow quantity control mode that goes out of compartment reduces the pressure difference of two compartments until the diaphragm 100 and the first limit
Column 410 be detached from against.Preferably, when diaphragm 100 is resisted against on the second limited post 420, second stroke switch can be triggered
520.It, can be by subtracting after the controller 600 of bipolar membrane electrodialysis device detects the state that second stroke switch 520 is triggered
The feed liquor flow of small 510 place compartment of first stroke switch increases going out flow quantity, increasing for 510 place compartment of first stroke switch
The feed liquor flow of big 520 place compartment of second stroke switch reduces in the flow quantity out of 520 place compartment of second stroke switch
At least one control mode make two compartments pressure difference reduce until the diaphragm 100 and the second limited post 420 disengaging against.It is preferred that
Ground, first stroke switch 510 can be mounted on diaphragm 100, on the end of the first limited post 410 or directly as first
Limited post 410.Second stroke switch 520 can be mounted on diaphragm 100, is on the end of the second limited post 420 or direct
As the second limited post 420.By reduce pressure difference until corresponding diaphragm 100 and first or second limited post 420 be detached from against
This mode can be in the case where that cannot balance pressure difference by the way that corresponding diaphragm 100 is mobile to realize, through conventional control side
Formula balances pressure difference.
According to a preferred embodiment, the controller 600 of bipolar membrane electrodialysis device detects first stroke switch 510
After the state being triggered, timing can be carried out to the state that first stroke switch 510 is triggered, only in first stroke switch 510
When the first duration being triggered is more than the first preset threshold, just pass through the feed liquor of increase 510 place compartment of first stroke switch
Flow, the feed liquor for going out flow quantity, reducing 520 place compartment of second stroke switch for reducing 510 place compartment of first stroke switch
Flow, at least one of the flow quantity control mode that goes out for increasing 520 place compartment of second stroke switch make the pressure of two compartments
Difference be contracted to the diaphragm 100 and the first limited post 410 be detached from against.Preferably, the controller 600 of bipolar membrane electrodialysis device is examined
After measuring the state that second stroke switch 520 is triggered, timing can be carried out to the state that second stroke switch 520 is triggered,
Only when the second duration that second stroke switch 520 is triggered is more than the second preset threshold, just opened by reducing first stroke
The feed liquor flow of 510 place compartments, the flow quantity out for increasing 510 place compartment of first stroke switch, increase second stroke is closed to open
At least one of flow quantity control out closed the feed liquor flow of 520 place compartments, reduce 520 place compartment of second stroke switch
Mode make the pressure difference of two compartments be contracted to the diaphragm 100 and the second limited post 420 be detached from against.
According to a preferred embodiment, referring to Figure 10, if dry ion exchange resin 700 can be equipped in alkaline chamber 210.From
Sub-exchange resin 700 can be set into spherical and only be carried out by movement position of the inner wall of alkaline chamber 210 to ion exchange resin 700
Limitation.Preferably, the diameter of ion exchange resin 700 is 0.3mm~2mm.Ion exchange resin 700 includes cation exchange tree
Rouge and anion exchange resin.In alkaline chamber 210 in the case where water flowing, if dry ion exchange resin 700 is under the influence of water flow
Scrape at least partly dirt on inner wall of the inner wall of alkaline chamber 210 to remove alkaline chamber 210.It is made in alkaline chamber 210 because pressure difference changes
When variation descending at the volume of alkaline chamber 210, corresponding diaphragm 100 sets back simultaneously under the drive of flexible joint 300
It squeezes at least partly dirty on inner wall of the inner wall of at least partly scraping of ion exchange resin 700 alkaline chamber 210 to remove alkaline chamber 210
Dirt.In the interior setting ion exchange resin 700 of alkaline chamber 210, not only the resistance of alkaline chamber 210 can be made further to be dropped
It is low, so that alkali producing process is more economical, the ion exchange resin of squeeze can also be moved by water impact and diaphragm 100
700 both modes go to scrape the inner wall of alkaline chamber 210, reach good de-sludging effect.Preferably, if dry ion exchange resin
700 at least have two kinds of specifications of first diameter and second diameter, and composition interlaced with each other is in alkaline chamber 210 with extensive in diaphragm 100
Smaller resistance is formed when restoring position.Preferably, first diameter is 0.3~0.6mm, and second diameter is 0.9~1.2mm.Especially
Its preferably, first diameter is 0.5mm, and second diameter is 0.8mm.Preferably, if dry ion exchange resin in alkaline chamber 210
700 packed height and the ratio range of the ratio between alkaline chamber height are 1:2~9:10, and alkaline chamber height is bipolar membrane electrodialysis device peace
After being attached to position, the distance of the horizontal minimum point of alkaline chamber to horizontal highest point.
Embodiment 2
The present embodiment can be the further improvement and/or supplement to embodiment 1, and duplicate content repeats no more.Not
It causes in conflict or contradictory situation, the entirety and/or partial content of the preferred embodiment of other embodiments can be used as
The supplement of the present embodiment.
According to a preferred embodiment, referring to Figure 11, the multistage zero discharge treatment for disclosing a kind of high slat-containing wastewater is set
It is standby, it may include waste water tank 810, clarifying basin 200, clarified solution storage box 820, softening pond 910, ultrafiltration apparatus 920, weak acid cation bed
930, middle press mold enrichment facility 941, high pressure film condensing device 942, nanofiltration device 950, the first electric drive film device 961, second
Electric drive film device 962, freezing and crystallizing device 971, nitre crystallizer 972, sodium chloride crystallizer 973, bipolar membrane electrodialysis device
980, at least one of waste water lifting pump 11, the first fresh water pump 12 and second fresh water pump 13.
Preferably, the multistage zero discharge treatment equipment of a kind of high slat-containing wastewater may include:
Waste water tank 810 can be used for storing high slat-containing wastewater to be processed；
Clarifying basin 200 can connect in the downstream of waste water tank 810, can be used for locating high slat-containing wastewater in advance
Reason can obtain the high slat-containing wastewater of waste water tank 810 to remove impurity particle by waste water lifting pump 11；
Clarified solution storage box 820 can connect in the downstream of clarifying basin 200, can be used for storing at clarifying basin 200
Clarified solution after reason can obtain clarifying basin treated clarified solution by the first fresh water pump 12；
Soften pond 910, can connect in the downstream of clarified solution storage box 820, can be used for a sofening treatment with
The hardness of liquid is reduced, the clarified solution stored in clarified solution storage box 820 can be obtained by the second fresh water pump 13；
Ultrafiltration apparatus 920 can connect the downstream in softening pond 910, can be used for being filtered liquid and being concentrated；
Weak acid cation bed 930 can connect in the downstream of ultrafiltration apparatus 920, can be used for secondary sofening treatment with into one
Step reduces the hardness of liquid, to guarantee the stable operation in device downstream；
Middle press mold enrichment facility 941 can connect in the downstream of weak acid cation bed 930, for liquid to be concentrated, in
The clear liquid of press mold enrichment facility 941 can be sent into the water producing pipe 840 for collecting fresh water；
High pressure film condensing device 942 can connect in the downstream of middle press mold enrichment facility 941, dense for centering press mold
The concentrate of compression apparatus 941 is concentrated again, and the clear liquid of high pressure film condensing device 942 can be sent into water producing pipe 840；
Nanofiltration device 950 can connect in the downstream of high pressure film condensing device 942, for high pressure film condensing device
942 concentrate is filtered；
First electric drive film device 961, is connected to the downstream of nanofiltration device 950, for the transmission to nanofiltration device 950
Liquid carries out concentration, and the fresh water of the first electric drive film device 961 can be sent into water producing pipe 840, the first electric drive film device 961
Concentrated water can be sent into the salt room of bipolar membrane electrodialysis device 980；
Second electric drive film device 962, is connected to the downstream of nanofiltration device 950, for the retention to nanofiltration device 950
Liquid carries out concentration, and the fresh water of the second electric drive film device 962 can be sent into water producing pipe 840, the second electric drive film device 962
Concentrated water can be sent into freezing and crystallizing device 971；
Freezing and crystallizing device 971 is connected to the downstream of the second electric drive film device 962, for filling to the second electric drive film
The concentrated water for setting 962 carries out Freeze crystallization, and the ten water nitre mother liquors that freezing and crystallizing device 971 is precipitated are sent into nitre crystallizer 972, freezing
The clear liquid of crystallizer 971 is sent into sodium chloride crystallizer 973；
Nitre crystallizer 972 is connected to the downstream of freezing and crystallizing device 971, for being evaporated concentration to ten water nitre mother liquors
Obtain sodium sulphate；
Sodium chloride crystallizer 973 is connected to the downstream of freezing and crystallizing device 971, for freezing and crystallizing device 971 clear liquid into
Row is concentrated by evaporation and obtains sodium chloride；And/or
Bipolar membrane electrodialysis device 980 is used to utilize the liquid production acid and/or alkali into the indoor saliferous of its salt.
Weak acid cation bed 930 is the strong ion-exchange capacity using weak-acid cation-exchange resin.Preferably, carboxylic is used in weak acid cation bed
Acidic group positive resin.Dissociation degree is weaker in water as organic acid for carboxylic acid group's positive resin, weakly acidic, it can only be in
It could dissociate in property and alkaline medium and show ion exchanging function.High slat-containing wastewater can pass through clarifying basin of the invention
200, soften pond 910, ultrafiltration apparatus 920, weak acid cation bed 930, middle press mold enrichment facility 941, high pressure film condensing device 942, receive
Filter device 950, the first electric drive film device 961, the second electric drive film device 962, freezing and crystallizing device 971, nitre crystallizer 972,
The multistep treatment of sodium chloride crystallizer 973 and/or bipolar membrane electrodialysis device 980 realizes zero-emission.
According to a preferred embodiment, a kind of multistage zero discharge treatment equipment of high slat-containing wastewater, at multistage zero-emission
Reason equipment includes: clarifying basin 200, the softening pond 910 for being connected to 200 downstream of clarifying basin, is connected to the ultrafiltration in softening 910 downstream of pond
Device 920, the weak acid cation bed 930 for being connected to 920 downstream of ultrafiltration apparatus are connected to the middle press mold concentration in 930 downstream of weak acid cation bed
Device 941 is connected to the high pressure film condensing device 942 in middle 941 downstream of press mold enrichment facility, is connected to high pressure film condensing device
The nanofiltration device 950 in 942 downstreams is connected to 950 downstream of nanofiltration device and for the permeate of nanofiltration device 950 to be concentrated
First electric drive film device 961 of processing, the bipolar membrane electrodialysis device 980 for being connected to 961 downstream of the first electric drive film device
At least one of.Bipolar membrane electrodialysis device 980 can be used for carrying out the concentrated water flowed out from the first electric drive film device 961
Processing obtains acid and/or alkali.The concentrated water of first electric drive film device 961 outflow can be sent into bipolar membrane electrodialysis device 980
Salt room.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can disclose in the present invention
Various solutions are found out under the inspiration of content, and these solutions also belong to disclosure of the invention range and fall into this hair
Within bright protection scope.It will be understood by those skilled in the art that description of the invention and its attached drawing are illustrative and are not
Constitute limitations on claims.Protection scope of the present invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of bipolar membrane electrodialysis device, which is characterized in that the bipolar membrane electrodialysis device include several diaphragms (100) and
Dialysing compartment (200), several diaphragms (100) include at least two panels Bipolar Membrane (110), at least a piece of anode membrane (120) and at least
A piece of cavity block (130), to be formed in the dialysing compartment (200) by least one alkaline chamber (210), at least one salt room (220) and extremely
At least three compartments of a few acid compartment (230) composition；
Wherein, respectively by corresponding flexible joint (300) according to can be in adjacent compartments around the every diaphragm (100)
The mode for the volume for allowing corresponding diaphragm (100) mobile under differential pressure action and then changing the adjacent compartments is close contact in dialysing compartment
(200) inner wall.
2. bipolar membrane electrodialysis device as described in claim 1, which is characterized in that at least one of the dialysing compartment (200)
Divide is to be stacked by several dismountable first sealing frames (200C) and pass through fastening between adjacent first sealing frame (200C)
Part compresses the chamber that the mode of contiguity is constituted, and a piece of diaphragm (100) of setting in each first sealing frame (200C), every film
Piece (100) is close contact in the inner wall of first sealing frame (200C) by least one independent flexible joint (300) respectively.
3. the bipolar membrane electrodialysis device as described in one of preceding claims, which is characterized in that the flexible joint (300)
It is described soft after being installed in place on first sealing frame (200C) but before first sealing frame (200C) also do not stack compression
Property interconnecting piece (300) the edge (300A) being connect with first sealing frame (200C) both ends extend out to respectively it is described
Except first sealing frame (200C),
After the first sealing frame (200C) is stacked and compressed, two adjacent edges (300A) stretch out the first sealing frame (200C)
Except part abut each other compression realize contiguity.
4. the bipolar membrane electrodialysis device as described in one of preceding claims, which is characterized in that in first sealing frame
Before (200C) does not also stack compression, the part that the edge (300A) is stretched out except the first sealing frame (200C) is towards first
It is inclined within sealing frame (200C) frame, with two neighboring first sealing frame (200C) stack compress during, it is adjacent
The part that edge (300A) is stretched out except the first sealing frame (200C) abut each other after towards within the first sealing frame (200C)
Protrusion, which is realized, to be touched, and in the junction of two adjacent edges (300A) after contiguity, forms inside first sealing frame
The projecting inward wedge-type seal cross section (A) of (200C).
5. the bipolar membrane electrodialysis device as described in one of preceding claims, which is characterized in that the flexible joint (300)
Including at least the first section (310) and the second section (320) for being respectively provided with dual extension-compression modulus and touching each other, described first
First elasticity modulus of section (310) is greater than the elasticity modulus of second section (320), and first section (310) is used for
It connecting the first sealing frame (200C), a part of second section (320) is close contact in first section (310), and described
Another part of two sections (320) is close contact in corresponding diaphragm (100).
6. the bipolar membrane electrodialysis device as described in one of preceding claims, which is characterized in that the bipolar membrane electrodialysis dress
Setting further includes several limiting sections, and corresponding limiting section is for limiting corresponding diaphragm (100) to adjacent with the diaphragm (100) two
The mobile extreme position of a compartment.
7. the bipolar membrane electrodialysis device as described in one of preceding claims, which is characterized in that the limiting section is that limit turns
Axis (430) and setting are in several first limited posts (410) of diaphragm (100) two sides and several second limited posts (420)；
The water inlet of each compartment by make respectively every the entirety of indoor water flow flow to it is identical in a manner of electrodialysis plant is set
First side, the water outlet side of each compartment are second side of electrodialysis plant；
The limit rotary shaft (430) is arranged in one end of close second side of corresponding diaphragm (100), first limited post
(410) and second limited post (420) be distributed in the two sides of corresponding diaphragm (100) for limit the diaphragm (100) to
The extreme position of the adjacent two compartments rotation of the diaphragm (100)；
After diaphragm (100) is pivotally moved to extreme position around the limit rotary shaft (430), diaphragm (100) is resisted against the first limit
To hinder diaphragm (100) further to rotate at least one direction on position column (410) or the second limited post (420).
8. the bipolar membrane electrodialysis device as described in one of preceding claims, which is characterized in that the diaphragm (100) is resisted against
When on first limited post (410), first stroke switch (510), the controller inspection of the bipolar membrane electrodialysis device can be triggered
After measuring first stroke switch (510) state for being triggered, by compartment where increasing the first stroke switch (510) into
Where flow quantity, the flow quantity out for reducing first stroke switch (510) place compartment, reduction second stroke switch (520)
The feed liquor flow of compartment, at least one of flow quantity controlling party out for increasing second stroke switch (520) place compartment
Formula reduce the pressure difference of two compartments until the diaphragm (100) and first limited post (410) be detached from against；And/or
When the diaphragm (100) is resisted against on the second limited post (420), second stroke switch (520) can be triggered, it is described bipolar
After the controller of membrane electrodialysis device detects the state that second stroke switch (520) is triggered, by reducing the first row
Compartment goes out flow quantity, increases where the feed liquor flow of compartment, the increase first stroke switch (510) where Cheng Kaiguan (510)
Compartment goes out liquid where the feed liquor flow of compartment, the reduction second stroke switch (520) where big second stroke switch (520)
At least one of flow control mode reduces the pressure difference of two compartments until the diaphragm (100) and second limited post
(420) be detached from against.
9. the bipolar membrane electrodialysis device as described in one of preceding claims, which is characterized in that the first stroke switch
(510) it is mounted on diaphragm (100), is mounted on the end of the first limited post (410) or directly as the first limited post
(410)；And/or
Second stroke switch (520) is mounted on diaphragm (100), be mounted on the end of the second limited post (420) or
Directly as the second limited post (420).
10. the bipolar membrane electrodialysis device as described in one of preceding claims, which is characterized in that the bipolar membrane electrodialysis dress
After the controller set detects the state that first stroke switch (510) is triggered, the shape that (510) are triggered is switched to first stroke
State carries out timing, only when the first duration that first stroke switch (510) is triggered is more than the first preset threshold, just passes through increasing
Compartment where the feed liquor flow of compartment, the reduction first stroke switch (510) where the big first stroke switch (510)
Flow quantity, the feed liquor flow for reducing second stroke switch (520) place compartment, the increase second stroke switch (520) institute out
The pressure difference of two compartments is set to be contracted to the diaphragm (100) and described at least one of flow quantity control mode that goes out of compartment
One limited post (410) be detached from against；And/or
After the controller of the bipolar membrane electrodialysis device detects the state that second stroke switch (520) is triggered, to described
The state that second stroke switch (520) is triggered carries out timing, only surpasses in the second duration that second stroke switch (520) is triggered
When crossing the second preset threshold, just by described in the feed liquor flow of compartment where reducing the first stroke switch (510), increase
The feed liquor flow for going out flow quantity, increasing compartment where second stroke switchs (520) of compartment where first stroke switchs (510),
At least one of the flow quantity control mode that goes out of compartment where reducing the second stroke switch (520) makes the pressure of two compartments
Difference be contracted to the diaphragm (100) and second limited post (420) be detached from against.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212539.8A CN109012203B (en) | 2018-10-17 | 2018-10-17 | Bipolar membrane electrodialysis device |
| CN201980010403.5A CN111902371B (en) | 2018-10-17 | 2019-01-28 | Multistage zero release treatment facility of high salt waste water that contains |
| PCT/CN2019/073404 WO2020077917A1 (en) | 2018-10-17 | 2019-01-28 | A multi-stage zero-emission treatment device for treating high-salt-content waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811212539.8A CN109012203B (en) | 2018-10-17 | 2018-10-17 | Bipolar membrane electrodialysis device |
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| Publication Number | Publication Date |
|---|---|
| CN109012203A true CN109012203A (en) | 2018-12-18 |
| CN109012203B CN109012203B (en) | 2020-06-19 |
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|---|---|---|---|
| CN201811212539.8A Active CN109012203B (en) | 2018-10-17 | 2018-10-17 | Bipolar membrane electrodialysis device |
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| CN (1) | CN109012203B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217866A (en) * | 2019-06-25 | 2019-09-10 | 武汉长兴电器发展有限公司 | A kind of electrodialysis plant and its method for handling stainless steel acid cleaning waste water |
| CN110386746A (en) * | 2019-05-31 | 2019-10-29 | 中山大学 | A kind of method of bipolar membrane electrodialysis production soda acid-pyrohydrolysis-anaerobic digestion process integration processing residual active sludge |
| CN110736774A (en) * | 2019-09-27 | 2020-01-31 | 杭州蓝然环境技术股份有限公司 | electrodialysis basic experiment standard test method |
| WO2020077917A1 (en) * | 2018-10-17 | 2020-04-23 | Bgt Group Co., Ltd | A multi-stage zero-emission treatment device for treating high-salt-content waste water |
| CN111233099A (en) * | 2019-03-28 | 2020-06-05 | 金达泰克电子系统(北京)有限公司 | Membrane stack capable of being automatically assembled and disassembled and used for treating radioactive wastewater |
| CN111921381A (en) * | 2020-09-17 | 2020-11-13 | 山东龙安泰环保科技有限公司 | Cooling device for electrodialyzer cathode and anode |
| CN114452821A (en) * | 2022-01-26 | 2022-05-10 | 中国科学技术大学 | A bipolar membrane electrodialysis device and method and application of using the same to prepare regenerated alkali |
| CN115893729A (en) * | 2022-11-21 | 2023-04-04 | 深圳市互成自动化设备有限公司 | Automatic change online depainting solution recovery plant |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869375A (en) * | 1970-12-23 | 1975-03-04 | Asahi Chemical Ind | Gasket structure |
| JPS63229105A (en) * | 1987-03-17 | 1988-09-26 | Shin Kobe Electric Mach Co Ltd | How to seal ion exchange membrane |
| KR20010078427A (en) * | 2000-10-13 | 2001-08-21 | 정동빈 | Cell unit of electrodialysis membrane for producing the condensed brine |
| JP2006218382A (en) * | 2005-02-09 | 2006-08-24 | Japan Organo Co Ltd | Electric apparatus for producing deionized water |
| CN2825084Y (en) * | 2005-08-06 | 2006-10-11 | 湖州飞英高纯水设备有限公司 | Concentrated electric dialyzator |
| CN2837291Y (en) * | 2005-12-09 | 2006-11-15 | 河北工程学院 | Electric deionizing water-purifying device |
| JP4095223B2 (en) * | 2000-02-18 | 2008-06-04 | 旭化成ケミカルズ株式会社 | Dialysis stack |
| CN102548727A (en) * | 2009-08-14 | 2012-07-04 | 荷兰应用自然科学研究组织Tno | Planar membrane module preparation |
| JP2014014776A (en) * | 2012-07-09 | 2014-01-30 | Astom:Kk | Electric dialysis device |
| CN103827355A (en) * | 2011-09-15 | 2014-05-28 | 德诺拉工业有限公司 | Gas-diffusion electrode |
| CN204134479U (en) * | 2014-09-15 | 2015-02-04 | 中山市普德净水设备有限公司 | Concentrated water chamber structure of edi water purification equipment |
| CN104524976A (en) * | 2015-01-21 | 2015-04-22 | 中国科学技术大学 | Electric nanofiltration device for selective separation of monovalent/multivalent ions |
| US20150122657A1 (en) * | 2010-11-12 | 2015-05-07 | Evoqua Water Technologies Pte. Ltd. | Electrical purification apparatus having a blocking spacer |
| CN204429116U (en) * | 2015-02-05 | 2015-07-01 | 于德贤 | A kind of electrodialytic membranes that can prevent concentrate from missing |
| CN106630040A (en) * | 2016-12-28 | 2017-05-10 | 中国科学技术大学 | Selective bipolar membrane electrodialysis system and application thereof |
| 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 |
-
2018
- 2018-10-17 CN CN201811212539.8A patent/CN109012203B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869375A (en) * | 1970-12-23 | 1975-03-04 | Asahi Chemical Ind | Gasket structure |
| JPS63229105A (en) * | 1987-03-17 | 1988-09-26 | Shin Kobe Electric Mach Co Ltd | How to seal ion exchange membrane |
| JP4095223B2 (en) * | 2000-02-18 | 2008-06-04 | 旭化成ケミカルズ株式会社 | Dialysis stack |
| KR20010078427A (en) * | 2000-10-13 | 2001-08-21 | 정동빈 | Cell unit of electrodialysis membrane for producing the condensed brine |
| JP2006218382A (en) * | 2005-02-09 | 2006-08-24 | Japan Organo Co Ltd | Electric apparatus for producing deionized water |
| CN2825084Y (en) * | 2005-08-06 | 2006-10-11 | 湖州飞英高纯水设备有限公司 | Concentrated electric dialyzator |
| CN2837291Y (en) * | 2005-12-09 | 2006-11-15 | 河北工程学院 | Electric deionizing water-purifying device |
| CN102548727A (en) * | 2009-08-14 | 2012-07-04 | 荷兰应用自然科学研究组织Tno | Planar membrane module preparation |
| US20150122657A1 (en) * | 2010-11-12 | 2015-05-07 | Evoqua Water Technologies Pte. Ltd. | Electrical purification apparatus having a blocking spacer |
| CN103827355A (en) * | 2011-09-15 | 2014-05-28 | 德诺拉工业有限公司 | Gas-diffusion electrode |
| JP2014014776A (en) * | 2012-07-09 | 2014-01-30 | Astom:Kk | Electric dialysis device |
| CN204134479U (en) * | 2014-09-15 | 2015-02-04 | 中山市普德净水设备有限公司 | Concentrated water chamber structure of edi water purification equipment |
| CN104524976A (en) * | 2015-01-21 | 2015-04-22 | 中国科学技术大学 | Electric nanofiltration device for selective separation of monovalent/multivalent ions |
| CN204429116U (en) * | 2015-02-05 | 2015-07-01 | 于德贤 | A kind of electrodialytic membranes that can prevent concentrate from missing |
| 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 |
| CN106630040A (en) * | 2016-12-28 | 2017-05-10 | 中国科学技术大学 | Selective bipolar membrane electrodialysis system and application thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020077917A1 (en) * | 2018-10-17 | 2020-04-23 | Bgt Group Co., Ltd | A multi-stage zero-emission treatment device for treating high-salt-content waste water |
| CN111233099A (en) * | 2019-03-28 | 2020-06-05 | 金达泰克电子系统(北京)有限公司 | Membrane stack capable of being automatically assembled and disassembled and used for treating radioactive wastewater |
| CN110386746A (en) * | 2019-05-31 | 2019-10-29 | 中山大学 | A kind of method of bipolar membrane electrodialysis production soda acid-pyrohydrolysis-anaerobic digestion process integration processing residual active sludge |
| CN110217866A (en) * | 2019-06-25 | 2019-09-10 | 武汉长兴电器发展有限公司 | A kind of electrodialysis plant and its method for handling stainless steel acid cleaning waste water |
| CN110217866B (en) * | 2019-06-25 | 2022-03-18 | 武汉长兴电器发展有限公司 | Electrodialysis device and method for treating stainless steel pickling wastewater by using electrodialysis device |
| CN110736774A (en) * | 2019-09-27 | 2020-01-31 | 杭州蓝然环境技术股份有限公司 | electrodialysis basic experiment standard test method |
| CN111921381A (en) * | 2020-09-17 | 2020-11-13 | 山东龙安泰环保科技有限公司 | Cooling device for electrodialyzer cathode and anode |
| CN114452821A (en) * | 2022-01-26 | 2022-05-10 | 中国科学技术大学 | A bipolar membrane electrodialysis device and method and application of using the same to prepare regenerated alkali |
| CN115893729A (en) * | 2022-11-21 | 2023-04-04 | 深圳市互成自动化设备有限公司 | Automatic change online depainting solution recovery plant |
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