CN115196724B - Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof - Google Patents
Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof Download PDFInfo
- Publication number
- CN115196724B CN115196724B CN202211134942.XA CN202211134942A CN115196724B CN 115196724 B CN115196724 B CN 115196724B CN 202211134942 A CN202211134942 A CN 202211134942A CN 115196724 B CN115196724 B CN 115196724B
- Authority
- CN
- China
- Prior art keywords
- guide plate
- membrane
- channel
- water
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4604—Treatment of water, waste water, or sewage by electrochemical methods for desalination of seawater or brackish water
-
- 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
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Electrochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to an integrated desalting device for exchange electrode electrochemical composite ion replacement and an implementation method thereof, belonging to the field of desalination and purification of strong brine. Including the process chamber that first end splint and second end splint enclose to close and form, the first selectivity ion that has the interval setting in the process chamber inner chamber between first exchangeable electrode and the second exchangeable electrode permeates membrane C membrane and first selectivity ion and permeates membrane A membrane, first selectivity ion permeates and forms the second multi-flow channel baffle between membrane C membrane and the first selectivity ion permeate membrane A membrane, form the third multi-flow channel baffle between first selectivity ion permeates membrane A membrane and the second exchangeable electrode. The invention has the following beneficial effects: the effective combination of electric field directional ion attraction, fixed bed and electric displacement and membrane selective permeation technology is adopted, continuous desalting treatment can be carried out, and the method has the advantages of high desalting rate, low cost, simple operation, long service life and the like.
Description
Technical Field
The invention relates to an integrated desalting device for exchange electrode electrochemical composite ion replacement and an implementation method thereof, belonging to the field of desalination and purification of strong brine.
Background
In recent decades, the economy of China is continuously developed, and the contradiction between supply and demand of water resources is increasingly prominent. According to statistics, the world fresh water resource only occupies 2.5 percent of the total water quantity of the ball, and the seawater and the brackish water reach 97 percent. However, most of the fresh water is concentrated in the severe environments of the south and north poles, mountain glaciers, snow and the like, and is difficult to develop and use. In the face of the problems of water resource shortage, serious water pollution, large industrial water consumption and the like, the conservation of fresh water resources and the quality-based recycling of available water resources become important subjects in the century, and the conservation of human survival, economic development and social security are further concerned. In order to solve the problem, governments of various countries adopt corresponding measures, so that the environmental protection and saving awareness is enhanced, and water resource protection measures are taken; on the other hand, advanced and low-cost water treatment technologies are developed to obtain fresh water resources, or reclaimed water recycling of high-difficulty wastewater is developed to reduce the exploitation of fresh water.
At present, the methods for treating the concentrated water of the membrane method desalination process in China mainly comprise the following steps: the traditional evaporation process has high energy consumption and high material requirement; the reverse osmosis membrane method has large power consumption, easy pollution and blockage, large influence on the recovery rate by the salt content of inlet water and large discharge amount of waste strong brine; the electrodialysis process has high equipment investment and high running cost when the salt content is low; the electro-adsorption technology has high equipment investment, low desalination efficiency and discontinuous operation, and needs continuous halt for regeneration; the anion-cation resin exchange method has the defects of low utilization rate of regenerated medicament, waste of produced water and the like.
Therefore, although the treatment of the concentrated brine is known to some extent in China at present, the desalination process of the concentrated brine has more or less defects due to the limitation of the current technical level.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the invention are as follows: in order to solve one of the problems, the provided integrated desalting device and the implementation method thereof can continuously and efficiently remove salt, can meet the water inlet requirements of high and low salt content, and can produce water with low salt content, low discharge of strong brine and is environment-friendly.
The invention relates to an integrated desalting device for exchange electrode electrochemical composite ion replacement, which is characterized in that: comprises a processing chamber which is formed by enclosing a first end clamping plate and a second end clamping plate, a first exchangeable electrode and a third exchangeable electrode are respectively arranged in the two sides of the inner cavity of the processing chamber, a second exchangeable electrode which is parallel to the first exchangeable electrode and the third exchangeable electrode is arranged in the inner cavity of the processing chamber between the first exchangeable electrode and the third exchangeable electrode, a first selective ion permeable membrane C and a first selective ion permeable membrane A which are arranged at intervals are arranged in the inner cavity of the processing chamber between the first exchangeable electrode and the second exchangeable electrode, a first multi-flow-channel guide plate is formed between the first exchangeable electrode and the first selective ion permeable membrane C, the ion exchange membrane comprises a first selective ion permeation membrane A membrane, a second selective ion permeation membrane C membrane, a first exchangeable electrode, a second exchangeable electrode, a first selective ion permeation membrane A membrane, a second selective ion permeation membrane A membrane, a third exchangeable electrode, a fourth multi-channel flow guide plate, a fifth multi-channel flow guide plate and a free ion fixed bed, wherein the first multi-channel flow guide plate is formed between the first selective ion permeation membrane C membrane and the first selective ion permeation membrane A membrane, the second selective ion permeation membrane A membrane and the second selective ion permeation membrane C membrane are arranged in an inner cavity of a treatment chamber between the second exchangeable electrode and the third exchangeable electrode at intervals, the fourth multi-channel flow guide plate is formed between the second exchangeable electrode and the second selective ion permeation membrane A membrane, and the free ion fixed bed is arranged between the second selective ion permeation membrane C membrane and the second selective ion permeation membrane A membrane.
The invention mainly relates to the miscellaneous salt treatment of brackish water, reclaimed water and high-salt-content wastewater, and compared with the traditional treatment method, the method has the advantages of low cost, low energy consumption, high efficiency and the like. The development of the process can save water cost for enterprises on one hand, and can greatly reduce the consumption of fresh water resources such as surface water and the like on the other hand, and benefits descendants.
Further, the two ends of the first multi-flow-channel guide plate are respectively a flow channel port A and a flow channel port B, the two ends of the second multi-flow-channel guide plate are respectively provided with a flow channel port C and a flow channel port D, the two ends of the third multi-flow-channel guide plate are respectively provided with a flow channel port E and a flow channel port F, the two ends of the fourth multi-flow-channel guide plate are respectively provided with a flow channel port G and a flow channel port H, the two ends of the free ion fixed bed are respectively provided with a flow channel port J and a flow channel port K, and the two ends of the fifth multi-flow-channel guide plate are respectively provided with a flow channel port M and a flow channel port N.
Further, the device also comprises an external circuit, wherein the anode of the external circuit is connected with the first exchangeable electrode and the third exchangeable electrode, and the cathode of the external circuit is connected with the second exchangeable electrode.
Furthermore, the runner port D is connected with the first water inlet runner, the runner port H and the runner port N are connected with the second water inlet runner, the runner port A, the runner port G and the runner port M are connected with the first-level communication runner, the runner port C and the runner port J are connected with the second-level communication runner, the runner port B and the runner port F are connected with the strong brine runner, and the runner port K is connected with the demineralized water runner.
Further, the device also comprises an external circuit, the anode of the external circuit is connected with the second exchangeable electrode, and the cathode of the external circuit is connected with the first exchangeable electrode.
Furthermore, the runner port B and the runner port F are connected with a first water inlet runner, the runner port H and the runner port N are connected with a second water inlet runner, the runner port C and the runner port M are connected with a first-level communication runner, the runner port A, the runner port E and the runner port J are connected with a second-level communication runner, the runner port D is connected with a strong brine runner, and the runner port K is connected with a demineralized water runner.
The invention also discloses an implementation method of the integrated desalting device by the exchange electrode electrochemical composite ion replacement, which comprises the following steps: the water to be treated is divided into a first water flow and a second water flow, and the water flows into a second multi-flow guide plate through a first water inlet flow channel and flows out of the other end of the second multi-flow guide plate; the interior of the second multi-flow-channel guide plate is acted by an electric field force of the counter electrode, and the free ions with positive charges and negative charges do directional movement according to the direction of the electric field force and respectively enter the first multi-flow-channel guide plate and the third multi-flow-channel guide plate through the first selective ion permeable membrane C and the first selective ion permeable membrane A; the water in the second multi-channel guide plate forms primary desalted water, and the primary desalted water enters the free ion fixed bed through the secondary communicating channel; the free ion fixed bed makes directional movement according to the direction of an electric field force by virtue of the electric field force of the paired electrodes, and the free ions with positive charges respectively enter a fifth multi-channel guide plate and a fourth multi-channel guide plate through a second selective ion permeable membrane C and a second selective ion permeable membrane A; in the interior of the free ion fixed bed, because the free ions with positive and negative charges respectively carry out directional migration according to the direction of an electric field force, the residual free ions with positive and negative charges are attracted and fixed by the free ion replaceable particle organic polymer material for deep desalination, and the formed desalted water flows out from the desalted water flow channel; and the second water flow flows into the fourth multi-channel guide plate and the fifth multi-channel guide plate from the second water inlet channel, flows out from the other ends of the fourth multi-channel guide plate and the fifth multi-channel guide plate respectively, flows into the first multi-channel guide plate and the third multi-channel guide plate respectively after converging through the first-stage communicated channel, flows out from the first multi-channel guide plate and the third multi-channel guide plate respectively, and the water flowing out from the first multi-channel guide plate and the third multi-channel guide plate is converged to form strong brine which flows out from the strong brine channel.
The invention also discloses an implementation method of the integrated desalting device by the exchange electrode electrochemical composite ion replacement, which comprises the following steps: the water to be treated is divided into a first water flow and a second water flow, and the water flows into a first multi-flow guide plate and a second multi-flow guide plate through a first water inlet flow channel and flows out from the other ends of the first multi-flow guide plate and the second multi-flow guide plate; the inner part of the first multi-channel guide plate is acted by the electric field force of the paired electrodes, the free ions with negative charges directionally move according to the direction of the electric field force and enter the second multi-channel guide plate through the membrane C of the first selective ion permeation membrane; the water flowing out of the first multi-channel guide plate and the third multi-channel guide plate is primary desalted water, the primary desalted water flows into the free ion fixed bed through the second-level communicating channel, the primary desalted water enters the free ion fixed bed, and the free ions with positive charges and negative charges are attracted and fixed by the free ion replaceable particle organic polymer material to carry out deep desalting to form desalted water which flows out of the free ion fixed bed through the desalted water channel; and the second water flow enters the fourth multi-channel guide plate and the fifth multi-channel guide plate from the second water inlet channel and flows out from the other ends of the fourth multi-channel guide plate and the fifth multi-channel guide plate, and the water flowing out of the fourth multi-channel guide plate and the fifth multi-channel guide plate flows into the second multi-channel guide plate through the primary communicating channel to form strong brine flowing out of the strong brine channel.
Furthermore, the free ion fixed bed comprises a box-type combined frame, two ends of the box-type combined frame are respectively provided with an isolation sieve, and a filling cavity formed by enclosing the isolation sieve and the box-type combined frame is filled with a free ion replaceable particle organic polymer material; the free ion replaceable particle organic polymer material is styrene or acrylic polymer particles or chelating type particles, the box type combination frame is polypropylene high molecular polymer, polyethylene polymer, vinyl chloride modified high molecular polymer or terpolymer, and the isolation screen is a wedge wire winding screen, a Johnson slotted screen or a porous resin support material; the first selective ion permeable membrane A and the second selective ion permeable membrane A are selective ion permeable membranes A prepared from fluorine-containing vinyl copolymers; the first selective ion permeable membrane C and the second selective ion permeable membrane C are selective ion permeable membranes C prepared by modified cross-linked polymers containing quaternary ammonium groups; the first exchangeable electrode, the second exchangeable electrode and the third exchangeable electrode are inert electrodes, and the exchangeable electrodes are ruthenium-series titanium electrodes, iridium-series titanium electrodes, platinum-series titanium electrodes, pure titanium electrodes, graphite electrodes or nickel-iron oxide electrodes; the first multi-runner guide plate, the second multi-runner guide plate, the third multi-runner guide plate, the fourth multi-runner guide plate and the fifth multi-runner guide plate are all made of polypropylene high polymer materials, polyethylene polymer materials, polyamide fiber resin materials or non-conductive materials; the flow channel of the multi-channel guide plate is trapezoidal, rhombic, S-curve and hole-shaped, and liquid forms turbulent flow when flowing in the flow channel, so that the concentration polarization phenomenon is reduced; the first end clamping plate and the second end clamping plate are mutually parallel hard fastening plates, and the clamping plates are made of a single metal material, a high-strength light alloy material and a hard high polymer material; the external circuit is a direct-current stabilized power supply which is provided with a positive electrode and negative electrode change-over switch for switching a positive electrode and a negative electrode, and the positive electrode and the negative electrode of the direct-current stabilized power supply are respectively connected with corresponding exchangeable electrodes.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to an exchange electrode electrochemical composite ion displacement integrated desalting device and an implementation method thereof, which mainly aims at desalting treatment of salt-containing wastewater, and utilizes a selective ion permeation membrane to preliminarily remove salt through an exchangeable electrode, then uses a fixed ion fixed bed to fix salt for deep desalting, applies voltage to an inert electrode of the exchangeable electrode through a voltage stabilizing power supply, changes the microscopic motion and the dynamic state of free ions, and enables charged ions to directionally move under the action of an electrode electric field force and achieve the aim of desalting through the selective ion permeation membrane. Compared with the traditional desalination method, the method adopts the effective combination of electric field directional attraction ions, fixed bed isoelectric substitution and membrane selective permeation technology, can continuously carry out desalination treatment, and has the advantages of high desalination rate, low cost, simple and convenient operation, long service time and the like. Meanwhile, the defects that the resin needs acid and alkali and is shut down for regeneration are overcome.
The invention can adopt a plurality of exchangeable electrochemical composite ion displacement integrated desalting process units to be used in parallel or in series. The working areas are connected through pipelines outside the working areas according to the water flow direction, and corresponding working area switching is carried out through the control valve according to the working requirement of the desalting process.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings used in the detailed description or the prior art description will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.
FIG. 1 is a schematic view of the construction of an exchange electrode electrochemical composite ion displacement integrated desalination apparatus in example 1 of the present invention;
FIG. 2 is a schematic diagram of the operation of the ion exchange electrode electrochemical composite ion displacement integrated desalination apparatus (using Na as the active ingredient) in example 2 of the present invention + 、Cl - 、NH 4 + 、CO 3 2- For example);
FIG. 3 shows the switching power of the ion exchange electrode electrochemical composite ion exchange integrated desalination device in embodiment 3 of the present inventionWorking scheme after extreme polarity (as Na) + 、Cl - 、NH 4 + 、CO 3 2- For example);
the ion exchange membrane comprises a first end clamping plate 1.1, a second end clamping plate 2, a first exchangeable electrode 3, a first multi-channel guide plate 3.1, a second multi-channel guide plate 3.2, a third multi-channel guide plate 3.3, a fourth multi-channel guide plate 3.4, a fifth multi-channel guide plate 4, a first selective ion permeable membrane C membrane 4.1, a second selective ion permeable membrane C membrane 5, a first selective ion permeable membrane A membrane 5.1, a second selective ion permeable membrane A membrane 6, a second exchangeable electrode 7, a free ion replaceable particle organic polymer material 8, a third exchangeable electrode 9, an isolating screen 10, a box-type combined frame 11, a first working area 12, a second working area 13, a third working area 14, a fourth working area 15, a fifth working area 16, a sixth working area 17, a first water inlet channel 18, a second water inlet channel 19, a concentrated brine channel 20, a brine removal channel 21, a primary communication channel 22, a secondary communication channel 23 and an external circuit.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the present invention is further illustrated by the following examples, which are not intended to be limiting, and any modifications, equivalents, improvements, etc. which are within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Example one
As shown in figure 1, the integrated desalination device with exchangeable electrode electrochemical composite ion replacement comprises a treatment chamber formed by enclosing a first end clamping plate 1 and a second end clamping plate 1.1, a first exchangeable electrode 2 and a third exchangeable electrode 8 are respectively arranged inside two sides of the inner cavity of the treatment chamber, a second exchangeable electrode 6 parallel to the first exchangeable electrode 2 and the third exchangeable electrode 8 is arranged in the inner cavity of the treatment chamber between the first exchangeable electrode 2 and the third exchangeable electrode 8, a first selective ion permeable membrane C membrane 4 and a first selective ion permeable membrane A membrane 5 are arranged at intervals in the inner cavity of the treatment chamber between the first exchangeable electrode 2 and the second exchangeable electrode 6, a first multi-flow channel flow guide plate 3 is formed between the first exchangeable electrode 2 and the first selective ion permeable membrane C membrane 4, a second multi-channel flow guide plate 3.1 is formed between the first selective ion permeable membrane C membrane 4 and the first selective ion permeable membrane A membrane 5, a third multi-channel flow guide plate 3.2 is formed between the first selective ion permeable membrane A membrane 5 and the second exchangeable electrode 6, a second selective ion permeable membrane A membrane 5.1 and a second selective ion permeable membrane C membrane 4.1 which are arranged at intervals are arranged in the inner cavity of the treatment chamber between the second exchangeable electrode 6 and the third exchangeable electrode 8, a fourth multi-channel flow guide plate 3.3 is formed between the second exchangeable electrode 6 and the second selective ion permeable membrane A membrane 5.1, a fifth multi-channel flow guide plate 3.4 is formed between the second selective ion permeable membrane C membrane 4.1 and the third exchangeable electrode 8, and a free ion fixed bed is arranged between the second selective ion permeable membrane C membrane 4.1 and the second selective ion permeable membrane A membrane 5.1.
Preferably, the two ends of the first multi-flow-channel guide plate 3 are a flow channel port a and a flow channel port B, the two ends of the second multi-flow-channel guide plate 3.1 are provided with a flow channel port C and a flow channel port D, the two ends of the third multi-flow-channel guide plate 3.2 are provided with a flow channel port E and a flow channel port F, the two ends of the fourth multi-flow-channel guide plate 3.3 are provided with a flow channel port G and a flow channel port H, the two ends of the free ion fixed bed are provided with a flow channel port J and a flow channel port K, and the two ends of the fifth multi-flow-channel guide plate 3.4 are provided with a flow channel port M and a flow channel port N.
The free ion fixed bed comprises a box type combined frame 10, wherein two ends of the box type combined frame 10 are respectively provided with an isolation sieve 9, and a filling cavity formed by enclosing the isolation sieves 9 and the box type combined frame 10 is filled with a free ion replaceable particle organic polymer material 7; the free ion replaceable particle organic polymer material 7 is a styrene or acrylic polymer particle or a chelate particle, the box type combination frame 10 is a polypropylene high molecular polymer, a polyethylene polymer, a vinyl chloride modified high molecular polymer or a terpolymer, and the isolation screen 9 is a wedge wire-wound screen, a Johnson slotted screen or a porous resin support material; the first selective ion permeable membrane A5 and the second selective ion permeable membrane A5.1 are selective ion permeable membranes A prepared from fluorine-containing vinyl copolymer; the first selective ion permeable membrane C4 and the second selective ion permeable membrane C4.1 are selective ion permeable membranes C prepared by modified cross-linked polymers containing quaternary ammonium groups; the first exchangeable electrode 2, the second exchangeable electrode 6 and the third exchangeable electrode 8 are all inert electrodes, and the exchangeable electrodes are ruthenium-based titanium electrodes, iridium-based titanium electrodes, platinum-based titanium electrodes, pure titanium electrodes, graphite electrodes or nickel-iron oxide electrodes; the first multi-channel guide plate 3, the second multi-channel guide plate 3.1, the third multi-channel guide plate 3.2, the fourth multi-channel guide plate 3.3 and the fifth multi-channel guide plate 3.4 are all made of polypropylene high polymer materials, polyethylene polymer materials, polyamide fiber resin materials or non-conductive materials; the multi-channel guide plate has trapezoidal, rhombic, S-curve and hole-shaped channels, and liquid forms turbulent flow when flowing in the channels, so that the concentration polarization phenomenon is reduced.
The first end clamping plate 1 and the second end clamping plate 1.1 are mutually parallel hard fastening plates, and the clamping plates are made of a single metal material, a high-strength light alloy material and a hard high polymer material.
The working principle of the embodiment is as follows: a second working area 12 is formed among the first selective ion permeable membrane C membrane 4, the first selective ion permeable membrane A membrane 5 and the second multi-channel guide plate 3.1, and water to be treated flows through a second working chamber in the second working area 12; the first selective ion permeable membrane C4, the first multi-channel guide plate 3 and the first exchangeable electrode 2 form a first working area 11, and water to be treated flows through a first working chamber in the first working area 11; the first selective ion permeable membrane A5, the third multi-channel guide plate 3.2 and the second exchangeable electrode 6 form a third working area 13, and water to be treated flows through a third working chamber in the third working area 13; the exchangeable electrode 6, the fourth multi-channel guide plate 3.3 and the second selective ion permeable membrane A5.1 form a fourth working area 14, and water to be treated flows through a fourth working chamber in the fourth working area 14; on the right side of the fourth working area 14, a fifth working area 15 is formed for a fixed bed of free ions, and the water to be treated flows through a fifth working chamber inside the fifth working area 15; the second selective ion permeable membrane C4.1, the second multi-channel flow guide plate 3.1 and the exchangeable electrode 8 form a sixth working area 16, and water to be treated flows through a sixth working chamber inside the sixth working area.
Example two
As shown in fig. 2, compared with the first embodiment, the present embodiment further includes an external circuit 23, the positive electrode of which is connected to the first exchangeable electrode 2 and the third exchangeable electrode 8, the negative electrode of which is connected to the second exchangeable electrode 6, the runner port D is connected to the first water inlet channel 17, the runner ports H and N are connected to the second water inlet channel 18, the runner ports a, G and M are connected to the first-stage communication channel 21, the runner ports C and J are connected to the second-stage communication channel 22, the runner ports B and F are connected to the concentrated brine channel 19, and the runner port K is connected to the demineralized water channel 20.
The implementation method of the exchange electrode electrochemical composite ion replacement integrated desalting device comprises the following steps: the water to be treated is divided into a first water flow and a second water flow, and the water flows into the second multi-flow guide plate 3.1 through the first water inlet flow channel 17 and flows out of the other end of the second multi-flow guide plate 3.1; the inside of the second multi-channel guide plate 3.1 is directionally moved by the electric field force of the counter electrode, and the positive and negative charged free ions enter the first multi-channel guide plate 3 and the third multi-channel guide plate 3.2 through the first selective ion permeable membrane C membrane 4 and the first selective ion permeable membrane A membrane 5 respectively; the water in the second multi-channel guide plate 3.1 forms primary desalted water, and the primary desalted water enters the free ion fixed bed through the secondary communicating channel 22; the free ion fixed bed makes directional movement according to the direction of an electric field force by the action of the electric field force of the paired electrodes, and the free ions with positive charges respectively enter a fifth multi-channel guide plate 3.4 and a fourth multi-channel guide plate 3.3 through a second selective ion permeable membrane C membrane 4.1 and a second selective ion permeable membrane A membrane 5.1; in the interior of the free ion fixed bed, because the free ions with positive and negative charges respectively carry out directional migration according to the direction of an electric field force, the residual free ions with positive and negative charges are attracted and fixed by the free ion replaceable particle organic polymer material 7 for deep desalination, and formed desalted water flows out from the desalted water flow passage 20; the second water flow flows into the fourth multi-channel guide plate 3.3 and the fifth multi-channel guide plate 3.4 from the second water inlet flow channel 18, flows out from the other ends of the fourth multi-channel guide plate 3.3 and the fifth multi-channel guide plate 3.4 respectively, then flows into the first multi-channel guide plate 3 and the third multi-channel guide plate 3.2 respectively after converging through the first-stage communicating flow channel 21, and flows out from the first multi-channel guide plate 3 and the third multi-channel guide plate 3.2 respectively, and the water flowing out from the first multi-channel guide plate 3 and the third multi-channel guide plate 3.2 is converged to form strong brine which flows out from the strong brine flow channel 19.
The working principle of the embodiment is as follows: the water to be treated is divided into a first water flow and a second water flow, the first water flow enters from one end of a second working chamber in a second working area 12 and flows out from the other end of the second working chamber, then enters from one end of a fifth working chamber in a fifth working area 15 and flows out from the other end of the fifth working chamber, free ions with positive charges and negative charges do directional movement according to the direction of an electric field force in the second working chamber under the action of the electric field force of a counter electrode, and respectively enter a first working chamber and a third working chamber through a selective ion permeable membrane C membrane and a membrane A, the free ions with positive charges and negative charges in the first working chamber cannot reversely pass through the selective ion permeable membrane C membrane and enter the second working chamber under the action of the electric field force of the electrode and the reverse blocking action of the selective ion permeable membrane C membrane and the membrane A membrane, and the like, the positive and negative charged free ions in the third working chamber can not reversely pass through the selective ion permeation membrane A membrane to enter the second working chamber, water in the second working chamber forms primary desalted water, after the primary desalted water enters the fifth working chamber, under the action of electric field force of a counter electrode, the positive charged free ions do directional movement according to the direction of the electric field force in the fifth working chamber, and enter the fourth working chamber through the selective ion permeation membrane A membrane in a directional manner, under the action of the electric field force of the counter electrode, the negative charged free ions do directional movement according to the direction of the electric field force in the fifth working chamber, and enter the sixth working chamber through the selective ion permeation membrane C membrane, and after the positive and negative charged free ions respectively do directional movement according to the direction of the electric field force in the fifth working chamber, residual positive and negative charged free ions after directional movement are left in the fifth working chamberThe free ions are attracted and fixed by the free ion replaceable particle organic polymer material 7 to carry out deep desalination, the formed desalted water flows out of the fifth working chamber, and water molecules are dissociated to generate H in the fifth working chamber under the action of the electric field force of the electrode + And OH - ，H + And OH - The salt fixed on the free ion displaceable particle organic polymeric material is displaced and its original function is restored (the ion directional movement is shown in FIG. 2).
The second water flow enters from one end of a fourth working chamber in the fourth working area 14 and one end of a sixth working chamber in the sixth working area 16 and flows out from the other end of the fourth working chamber, and then enters from one end of a first working chamber in the first working area 11 and one end of a third working chamber in the third working area 13 and flows out from the other end of the third working chamber; the free ions with positive charges move directionally according to the direction of the electric field force of the electrodes in the fifth working chamber under the action of the electric field force of the paired electrodes, enter the fourth working chamber through the membrane A of the selective ion permeable membrane, and dissociate to generate H + And OH - Part of weak acidic ions in water and H + Combining: such as CO 3 2- +H + =HCO 3 - In the exchangeable electrode 6, a partial chemical reaction occurs as follows: 2H + +2e - =H 2 ，OH - Water left in the fourth working chamber; the free ions with negative charges do directional movement according to the direction of the electric field force of the electrodes due to the action of the electric field force of the paired electrodes in the fifth working chamber, enter the sixth working chamber through the selective ion permeable membrane C, and are subjected to water neutral charge maintaining in the sixth working chamber, and water molecules are dissociated to generate H + And OH - Part of weakly basic ions in water and OH - Combining: such as NH4 + +OH - =NH 3 ‧H 2 O, the partial chemical reaction at the exchangeable electrode 8 takes place as: 4OH - -4e - =2H 2 O+O 2 ，H + The water flowing out of the fourth working chamber and the sixth working chamber is converged to form primary strong brine; the merged primary strong brine flows into the first working chamber and the third working chamber respectively and then flows into the second working chamberThe charged free ions move directionally under the action of electric field force of the paired electrodes in the chamber and enter the first working chamber through the selective ion permeable membrane C, and the water molecules are dissociated to generate H + And OH - Part of weakly basic ions in water and OH - Combining: such as NH4 + +OH - =NH 3 ‧H 2 O, a partial chemical reaction takes place at the exchangeable electrode 2: 4OH - -4e - =2H 2 O+O 2 ，H + Water remaining in the first working chamber; the positively charged free ions move directionally in the second working chamber under the action of the electric field force of the counter electrode and enter the third working chamber through the selective ion permeable membrane A, the electric neutrality of water is maintained in the third working chamber, and water molecules are dissociated to generate H + And OH - Some weak acid ions in water react with H + Combining: such as CO 3 2- +H + =HCO 3 - In the exchangeable electrode 6, a partial chemical reaction takes place: 2H + +2e - =H 2 ，OH - The water left in the third working chamber, the free ions with positive charges can not directionally migrate according to the direction of the electric field force of the electrode and enter the second working chamber through the selective ion permeation membrane C due to the reverse blocking effect of the selective ion permeation membrane C inside the first working chamber, the free ions with negative charges can not directionally migrate according to the direction of the electric field force of the electrode and enter the second working chamber through the selective ion permeation membrane A due to the reverse blocking effect of the selective ion permeation membrane A inside the third working chamber, and the water flowing out of the first working chamber and the water flowing out of the third working chamber are converged to form the concentrated brine.
The desalted water flows from the fifth working area 15 and the concentrated brine flows from the first working area 11 and the third working area 13.
EXAMPLE III
As shown in fig. 3, compared with the first embodiment, the present embodiment further includes an external circuit 23, an anode of which is connected to the second exchangeable electrode 6, a cathode of which is connected to the first exchangeable electrode 2, the runner port B and the runner port F are connected to the first water inlet channel 17, the runner port H and the runner port N are connected to the second water inlet channel 18, the runner port C and the runner port M are connected to the first-stage communicating channel 21, the runner port a, the runner port E and the runner port J are connected to the second-stage communicating channel 22, the runner port D is connected to the brine channel 19, and the runner port K is connected to the demineralized water channel 20.
The implementation method of the exchange electrode electrochemical composite ion replacement integrated desalting device comprises the following steps: the water to be treated is divided into a first water flow and a second water flow, the water flows into the first multi-flow guide plate 3 and the second multi-flow guide plate 3.1 through the first water inlet flow channel 17 and flows out from the other ends of the first multi-flow guide plate 3 and the second multi-flow guide plate 3.1; the internal part of the first multi-channel guide plate 3 is acted by the electric field force of the paired electrodes, the charged free ions are directionally moved according to the direction of the electric field force and enter the second multi-channel guide plate 3.1 through the membrane C4 of the first selective ion permeation membrane, and similarly, the internal part of the third multi-channel guide plate 3.2 is acted by the electric field force of the paired electrodes, the charged free ions are directionally moved according to the direction of the electric field force and enter the second multi-channel guide plate 3.1 through the membrane A5 of the first selective ion permeation membrane A; the water flowing out of the first multi-channel guide plate 3 and the third multi-channel guide plate 3.2 is primary desalted water, and is converged and flows into the free ion fixed bed through the second-level communicating flow channel 22, after the primary desalted water enters the free ion fixed bed, the free ions with positive and negative charges are attracted and fixed by the free ion replaceable particle organic polymer material 7 for deep desalting, and desalted water is formed and flows out of the free ion fixed bed through the desalted water flow channel 20; and the second water flow enters the fourth multi-channel guide plate 3.3 and the fifth multi-channel guide plate 3.4 from the second water inlet flow channel 18 and flows out from the other ends of the fourth multi-channel guide plate 3.3 and the fifth multi-channel guide plate 3.4, and the water flowing out of the fourth multi-channel guide plate 3.3 and the fifth multi-channel guide plate 3.4 flows into the second multi-channel guide plate 3.1 through the primary communicating flow channel 21 to form strong brine which flows out of the strong brine flow channel 19.
The working principle of the embodiment is as follows: the water to be treated is divided into a first flow and a second flow, the first flow is from the first operation inside the first operation area 11One end of a third working chamber in the chamber and the third working area 13 enters and flows out from the other end, and then enters and flows out from one end of a fifth working chamber in the fifth working area 15, free ions with charges move directionally according to the direction of an electric field force due to the action of an electric field force of a counter electrode in the first working chamber, and enter a second working chamber through a selective ion permeation membrane C, the electroneutrality of water is kept in the first working chamber, and H is generated by dissociation of water molecules + And OH - Part of weak acidic ions in water and H + Combining: such as CO 3 2- +H + =HCO 3 - In the exchangeable electrode 2, a partial chemical reaction occurs as follows: 2H + +2e - =H 2 ，OH - Water remaining in the first working chamber; similarly, in the third working chamber, due to the action of the electric field force of the counter electrode, the charged free ions move directionally according to the direction of the electric field force and enter the second working chamber through the selective ion permeable membrane A, and in order to keep the electric neutrality of water, water molecules dissociate to generate H + And OH - Part of weakly basic ions in water and OH - Combining: such as NH4 + +OH - =NH 3 ‧H 2 O, a partial chemical reaction takes place at the exchangeable electrode 6: 4OH - -4e - =2H 2 O+O 2 ，H + The water left in the third working chamber is converged by the water flowing out of the first working chamber and the third working chamber to form primary desalted water, and after the primary desalted water enters the fifth working chamber, the free ions with positive and negative charges are attracted and fixed by the free ion replaceable particle organic polymer material 7 to carry out deep desalting to form desalted water which flows out of the fifth working chamber; in the fifth working chamber, the water flowing out of the first working chamber and the water flowing out of the third working chamber are merged to form H existing in the water + And OH - The salt fixed on the free ion replaceable particle organic polymer material is replaced, and the original function is recovered.
A second water flow enters from one end of a fourth working chamber in a fourth working area 14 and one end of a sixth working chamber in a sixth working area 16 and flows out from the other end, enters from one end of a second working chamber in a second working area 12 and flows out from the other end, and no electric field effect exists between paired electrodes where the fourth working chamber and the sixth working chamber are located, so that free ions between the fourth working chamber and the sixth working chamber do not perform directional migration, water flowing out from the fourth working chamber and the sixth working chamber is converged and enters the second working chamber, under the action of an electric field effect of the paired electrodes, the free ions with positive and negative charges cannot continuously migrate in the second working chamber due to the reverse blocking effect of a selective ion permeable membrane A and a membrane C, the free ions with positive charges in the first working chamber and the free ions with positive charges in the third working chamber through a selective ion permeable membrane A are converged and electrically neutral in the second working chamber, and strong brine is formed;
the desalted water flows from the fifth working area 15 and the concentrated brine flows from the second working area 12.
It can be seen from the above embodiments that different desalination processes and methods can be realized by switching different preset working areas, and embodiment 2 has a wide application range of the salinity of the water to be treated, simple operation, and high desalination capability. Example 3 is particularly suitable for the purification of low salt-containing water, and has low operation energy consumption and high purification efficiency.
The desalting process has various process deformations, and can be used for connecting a plurality of working units in parallel or connecting a plurality of working areas in parallel so as to improve the treated water quantity; the method can be used for series connection and combination of a plurality of working units and series connection and combination of a plurality of working areas, compared with the market membrane process technologies such as electrodialysis and the like, the method is suitable for water quality treatment of complex salt, the salt content range of inlet water is wide, the salt content range of inlet water can reach 100000mg/L, the tolerance of inlet water organic matters (100-200 mg/L), turbidity (20 NTU) and silicon concentration (unlimited) of concentrated water is high, and desalted water can be purified to an ultrapure water state according to the requirement of reuse water.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides an integrated desalination device of compound ion replacement of exchange electrode electrochemistry which characterized in that: comprises a processing chamber formed by enclosing a first end clamping plate (1) and a second end clamping plate (1.1), wherein a first exchangeable electrode (2) and a third exchangeable electrode (8) are respectively arranged inside two sides of the inner cavity of the processing chamber, a second exchangeable electrode (6) which is parallel to the first exchangeable electrode (2) and the third exchangeable electrode (8) is arranged in the inner cavity of the processing chamber between the first exchangeable electrode (2) and the third exchangeable electrode (8), a first selective ion permeable membrane C membrane (4) and a first selective ion permeable membrane A membrane (5) which are arranged at intervals are arranged in the inner cavity of the processing chamber between the first exchangeable electrode (2) and the second exchangeable electrode (6), a first multi-channel guide plate (3) is formed between the first exchangeable electrode (2) and the first selective ion permeable membrane C membrane (4), a channel opening A and a channel opening B are respectively arranged at two ends of the first multi-channel guide plate (3), a second multi-channel guide plate (3.1) is formed between the first selective ion permeable membrane C membrane (4) and the first selective ion permeable membrane A membrane (5), a channel opening C and a channel opening D are respectively arranged at two ends of the second multi-channel guide plate (3.1), a third multi-channel guide plate (3.2) is formed between the first selective ion permeable membrane A membrane (5) and the second exchangeable electrode (6), a channel opening E and a channel opening B are respectively arranged at two ends of the third multi-channel guide plate (3.2), A flow passage port F, a second selective ion permeable membrane a (5.1) and a second selective ion permeable membrane C (4.1) which are arranged at intervals are arranged in the inner cavity of the treatment chamber between the second exchangeable electrode (6) and the third exchangeable electrode (8), a fourth multi-flow passage guide plate (3.3) is formed between the second exchangeable electrode (6) and the second selective ion permeable membrane a (5.1), a flow passage port G and a flow passage port H are respectively arranged at both ends of the fourth multi-flow passage guide plate (3.3), a fifth multi-flow passage guide plate (3.4) is formed between the second selective ion permeable membrane C (4.1) and the third exchangeable electrode (8), a flow passage port M and a flow passage port N are respectively arranged at both ends of the fifth multi-flow passage guide plate (3.4), free ions are arranged between the second selective ion permeable membrane C (4.1) and the second selective ion permeable membrane a (5.1), and a fixed bed is provided with a flow passage port J and a flow port K;
a second working area (12) is formed among the first selective ion permeable membrane C membrane (4), the first selective ion permeable membrane A membrane (5) and the second multi-channel guide plate (3.1), and water to be treated flows through a second working chamber in the second working area (12); the first selective ion permeable membrane C (4), the first multi-channel guide plate (3) and the first exchangeable electrode (2) form a first working area (11), and water to be treated flows through a first working chamber in the first working area (11); the first selective ion permeable membrane A (5), the third multi-channel guide plate (3.2) and the second exchangeable electrode (6) form a third working area (13), and water to be treated flows through a third working chamber in the third working area (13); a fourth working area (14) is formed by the second exchangeable electrode (6), a fourth multi-channel guide plate (3.3) and a second selective ion permeable membrane A (5.1), and water to be treated flows through a fourth working chamber in the fourth working area (14); on the right side of the fourth working area (14), a fifth working area (15) is formed for a fixed bed of free ions, and water to be treated flows through a fifth working chamber inside the fifth working area (15); a sixth working area (16) is formed by the second selective ion permeable membrane C membrane (4.1), the fifth multi-channel guide plate (3.4) and the third exchangeable electrode (8), and water to be treated flows through a sixth working chamber in the sixth working area;
the working areas are connected outside the working areas through pipelines according to the water flow direction, and corresponding working area switching is carried out through a control valve according to the working requirements of the desalting process;
the free ion fixed bed comprises a box-type combined frame (10), wherein two ends of the box-type combined frame (10) are respectively provided with an isolation sieve (9), and a filling cavity formed by enclosing the isolation sieve (9) and the box-type combined frame (10) is filled with a free ion replaceable particle organic polymer material (7); the free ion replaceable particle organic polymer material (7) is styrene or acrylic polymer particles or chelating type particles, the box-type combined frame (10) is polypropylene high molecular polymer, polyethylene polymer, vinyl chloride modified high molecular polymer or terpolymer, and the isolating screen (9) is a wedge-shaped wire winding screen; the first selective ion permeable membrane A (5) and the second selective ion permeable membrane A (5.1) are selective ion permeable membranes A prepared from fluorine-containing vinyl copolymers; the first selective ion permeable membrane C (4) and the second selective ion permeable membrane C (4.1) are selective ion permeable membranes C prepared by modified cross-linked polymers containing quaternary ammonium groups; the first exchangeable electrode (2), the second exchangeable electrode (6) and the third exchangeable electrode (8) are inert electrodes, and the exchangeable electrodes are ruthenium-based titanium electrodes, iridium-based titanium electrodes, platinum-based titanium electrodes, pure titanium electrodes, graphite electrodes or nickel-iron oxide electrodes; the first multi-channel guide plate (3), the second multi-channel guide plate (3.1), the third multi-channel guide plate (3.2), the fourth multi-channel guide plate (3.3) and the fifth multi-channel guide plate (3.4) are all made of polypropylene high polymer materials, polyethylene polymer materials, polyamide fiber resin materials or non-conductive materials; the flow channel of the multi-channel guide plate is trapezoidal, rhombic, S-curve and hole-shaped, and liquid forms turbulent flow when flowing in the flow channel, so that the concentration polarization phenomenon is reduced;
the device also comprises an external circuit (23), the external circuit is a direct current stabilized power supply which is provided with a positive electrode and negative electrode change-over switch for switching the positive electrode and the negative electrode, the positive electrode and the negative electrode of the direct current stabilized power supply are respectively connected with corresponding exchangeable electrodes,
the positive electrode of an external circuit (23) is connected with the first exchangeable electrode (2) and the third exchangeable electrode (8), the negative electrode of the external circuit (23) is connected with the second exchangeable electrode (6), in this state, the runner port D is connected with the first water inlet runner (17), the runner port H and the runner port N are both connected with the second water inlet runner (18), the runner port A, the runner port E, the runner port G and the runner port M are all connected with the primary communicating runner (21), the runner port C and the runner port J are both connected with the secondary communicating runner (22), the runner port B and the runner port F are both connected with the strong brine runner (19), and the runner port K is connected with the demineralized water runner (20);
or the positive electrode of an external circuit (23) is connected with the second exchangeable electrode (6), the negative electrode of the external circuit (23) is connected with the first exchangeable electrode (2), and in this state, the runner port B and the runner port F are connected with the first water inlet runner (17), the runner port H and the runner port N are connected with the second water inlet runner (18), the runner port C, the runner port G and the runner port M are connected with the primary communication runner (21), the runner port A, the runner port E and the runner port J are connected with the secondary communication runner (22), the runner port D is connected with the strong brine runner (19), and the runner port K is connected with the demineralized water runner (20).
2. The exchange electrode electrochemical composite ion displacement integrated desalination device of claim 1, wherein the device is implemented by a method comprising the steps of: the water to be treated is divided into a first water flow and a second water flow, and the water flows into a second multi-flow guide plate (3.1) through a first water inlet flow channel (17) and flows out from the other end of the second multi-flow guide plate (3.1); the interior of the second multi-channel guide plate (3.1) is acted by an electric field force of the counter electrode, the free ions with positive charges and negative charges directionally move according to the direction of the electric field force and respectively enter the first multi-channel guide plate (3) and the third multi-channel guide plate (3.2) through the first selective ion permeable membrane C membrane (4) and the first selective ion permeable membrane A membrane (5); the water in the second multi-channel guide plate (3.1) forms primary desalted water, and the primary desalted water enters the free ion fixed bed through the secondary communicating channel (22); the free ion fixed bed makes directional movement according to the direction of an electric field force by virtue of the electric field force of the paired electrodes, and the free ions with positive charges and negative charges respectively enter a fifth multi-channel guide plate (3.4) and a fourth multi-channel guide plate (3.3) through a second selective ion permeable membrane C membrane (4.1) and a second selective ion permeable membrane A membrane (5.1); residual free ions with positive charges and negative charges are attracted and fixed by a free ion replaceable particle organic polymer material (7) for deep desalination because the free ions with positive charges and negative charges respectively perform directional migration in the free ion fixed bed according to the direction of an electric field force, and desalted water is formed and flows out from a desalted water flow passage (20); the second water flow flows into a fourth multi-flow guide plate (3.3) and a fifth multi-flow guide plate (3.4) from a second water inlet flow channel (18), and flows out from the other ends of the fourth multi-flow guide plate (3.3) and the fifth multi-flow guide plate (3.4) respectively, and then flows into the first multi-flow guide plate (3) and the third multi-flow guide plate (3.2) respectively after converging through a first-level communication flow channel (21), and flows out from the first multi-flow guide plate (3) and the third multi-flow guide plate (3.2) respectively, the water flowing out of the first multi-flow guide plate (3) and the third multi-flow guide plate (3.2) is converged, and concentrated brine flows out from a concentrated brine flow channel (19).
3. The exchange electrode electrochemical composite ion displacement integrated desalination device of claim 1, wherein the device is implemented by a method comprising the steps of: the water to be treated is divided into a first water flow and a second water flow, the first water flow enters a first multi-flow guide plate (3) and a third multi-flow guide plate (3.2) through a first water inlet flow channel (17), and the first water flow flows out from the other ends of the first multi-flow guide plate (3) and the third multi-flow guide plate (3.2); the interior of the first multi-channel guide plate (3) is acted by the electric field force of the paired electrodes, the charged free ions are directionally moved according to the direction of the electric field force and enter the second multi-channel guide plate (3.1) through the membrane C (4) of the first selective ion permeation membrane, and similarly, the interior of the third multi-channel guide plate (3.2) is acted by the electric field force of the paired electrodes, the charged free ions are directionally moved according to the direction of the electric field force and enter the second multi-channel guide plate (3.1) through the membrane A (5) of the first selective ion permeation membrane; the water flowing out of the first multi-channel guide plate (3) and the third multi-channel guide plate (3.2) is primary desalted water, the primary desalted water is converged and flows into the free ion fixed bed through the secondary communicating channel (22), after the primary desalted water enters the free ion fixed bed, the free ions with positive charges and negative charges are attracted and fixed by the free ion replaceable particle organic polymer material (7) for deep desalting, and desalted water is formed and flows out of the free ion fixed bed through the desalted water channel (20); and the second water flow enters the fourth multi-channel guide plate (3.3) and the fifth multi-channel guide plate (3.4) from the second water inlet flow channel (18) and flows out from the other ends of the fourth multi-channel guide plate (3.3) and the fifth multi-channel guide plate (3.4), and the water flowing out of the fourth multi-channel guide plate (3.3) and the fifth multi-channel guide plate (3.4) converges through the first-stage communicating flow channel (21) and flows into the second multi-channel guide plate (3.1) to form strong brine which flows out of the strong brine flow channel (19).
4. The exchange electrode electrochemical composite ion displacement integrated desalination device of claim 1, wherein: the first end clamping plate (1) and the second end clamping plate (1.1) are mutually parallel hard fastening plates, and the clamping plates are made of single metal materials, high-strength light alloy materials or hard high polymer materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211134942.XA CN115196724B (en) | 2022-09-19 | 2022-09-19 | Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211134942.XA CN115196724B (en) | 2022-09-19 | 2022-09-19 | Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115196724A CN115196724A (en) | 2022-10-18 |
| CN115196724B true CN115196724B (en) | 2023-01-06 |
Family
ID=83573681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211134942.XA Active CN115196724B (en) | 2022-09-19 | 2022-09-19 | Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115196724B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935132A (en) * | 2017-12-21 | 2018-04-20 | 兰州交通大学 | A kind of Electro Sorb coupled ion exchanges desalination regenerating unit and method |
| CN110316913A (en) * | 2019-08-01 | 2019-10-11 | 重庆大学 | Synchronous recycling salt error can be with the joint desalinization wastewater processing system of chemical energy in sewage |
| CN111137956A (en) * | 2018-11-05 | 2020-05-12 | 孙晓慰 | Electrochemical desalting device and method for fixed bed electrode |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU514772B2 (en) * | 1978-01-16 | 1981-02-26 | The Coca-Cola Company | Electrodialysis process |
| CA1310298C (en) * | 1985-01-16 | 1992-11-17 | Gerhard Kunz | Process and apparatus for treatment of fluids |
| CN1073466C (en) * | 1996-11-29 | 2001-10-24 | 清华大学 | Electrical ion exchange resin regenerating method and equipment |
| EP2222899A2 (en) * | 2007-11-30 | 2010-09-01 | Siemens Water Technologies Corp. | Systems and methods for water treatment |
| AU2009232342A1 (en) * | 2008-04-03 | 2009-10-08 | Evoqua Water Technologies Llc | Low energy system and method of desalinating seawater |
| CN110550707A (en) * | 2019-09-06 | 2019-12-10 | 温州捷朴环保科技有限公司 | Electrodialysis water treatment facilities with middle electrode |
-
2022
- 2022-09-19 CN CN202211134942.XA patent/CN115196724B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935132A (en) * | 2017-12-21 | 2018-04-20 | 兰州交通大学 | A kind of Electro Sorb coupled ion exchanges desalination regenerating unit and method |
| CN111137956A (en) * | 2018-11-05 | 2020-05-12 | 孙晓慰 | Electrochemical desalting device and method for fixed bed electrode |
| CN110316913A (en) * | 2019-08-01 | 2019-10-11 | 重庆大学 | Synchronous recycling salt error can be with the joint desalinization wastewater processing system of chemical energy in sewage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115196724A (en) | 2022-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100581640C (en) | Electro-deionization method and device for synchronously concentrating and purifying heavy metal wastewater | |
| US20080035548A1 (en) | Multi-functional filtration and ultra-pure water generator | |
| CN102153166B (en) | Electrodeionization (EDI) method and system dispensing with ion exchange membranes | |
| CN104926004A (en) | Capacitive sea water desalting equipment and method based on direct-current electric field effect | |
| CN114684981B (en) | Treatment method and system for wastewater containing heavy metals | |
| AU2014212394A1 (en) | Rechargeable electrochemical cells | |
| CN101696069B (en) | Ultra advanced treatment method and device for sewage | |
| CN104495991A (en) | Efficient membrane capacitive deionizing array based on flowing electrodes | |
| CN212669467U (en) | Catalytic cracking wet flue gas desulfurization waste water cyclic utilization system | |
| CN108862489B (en) | Continuous electrode spacing adjusting type desalting technology for electric adsorption-regeneration and reaction module | |
| CN102491460A (en) | Soluble metal salt recovery and wastewater purification device and method thereof | |
| CN115196724B (en) | Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof | |
| CN111320243A (en) | Membrane-free electrodeionization method and device with current perpendicular to water flow direction | |
| CN109052745B (en) | Concentration and reduction method for easily-scaling wastewater | |
| KR100460225B1 (en) | Apparatus and method for purifying water through an electrical adsorption-desorption cycle using an activated carbon electrode with both positive and negative | |
| CN211896161U (en) | One-way anion mixed exchange type water purification system and water purifier | |
| CN211896159U (en) | Water filtration and purification system based on ion exchange and water purifier | |
| CN212198606U (en) | One-way cation mixed exchange type water purification system and water purifier | |
| CN212174544U (en) | Membrane-free electric deionization device with current perpendicular to water flow direction | |
| CN212151929U (en) | High-yield water RO (reverse osmosis) water filtering and purifying system based on electrically regenerated resin and water purifier | |
| CN211896158U (en) | Mixed horizontal type ion exchange water purification system and water purifier | |
| CN212151695U (en) | One-way anion exchange type water filtering and purifying system and water purifier | |
| CN212610037U (en) | Purify pure water all-in-one | |
| CN202030567U (en) | Electrodeionization system without ion exchange membrane | |
| CN111825266A (en) | Catalytic cracking wet desulphurization waste water recycling system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |