CN105668723A - Capacitor deionization device, system and method - Google Patents
Capacitor deionization device, system and method Download PDFInfo
- Publication number
- CN105668723A CN105668723A CN201610133985.4A CN201610133985A CN105668723A CN 105668723 A CN105668723 A CN 105668723A CN 201610133985 A CN201610133985 A CN 201610133985A CN 105668723 A CN105668723 A CN 105668723A
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- Prior art keywords
- water
- capacitor deionizing
- deionizing instrument
- capacitor
- electrode
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- 239000003990 capacitor Substances 0.000 title claims abstract description 198
- 238000000034 method Methods 0.000 title claims abstract description 84
- 238000002242 deionisation method Methods 0.000 title claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 203
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 19
- 229920005372 Plexiglas® Polymers 0.000 claims description 19
- 206010016807 Fluid retention Diseases 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000003014 ion exchange membrane Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 claims description 3
- 239000008346 aqueous phase Substances 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000011521 glass Substances 0.000 abstract 5
- 239000008213 purified water Substances 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000010129 solution processing Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011112 process operation Methods 0.000 description 2
- 229920005479 Lucite® Polymers 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010017 direct printing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- -1 with next electrode Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
Abstract
A capacitor deionization device comprises electrode pairs, electrode pair supporting frames, an organic glass container, a collector electrode for power on, a water inlet pipe for being connected to a raw water pond and a water outlet pipe for being connected to a purified water pond.Each electrode pair supporting frame comprises a first electrode placement face, a second electrode placement face opposite to the first electrode placement face, a water inlet and a water outlet.All the electrodes and all the electrode pair supporting frames are located inside the organic glass container.The organic glass container is a sealing container with the thick inner wall.The water inlet pipe penetrates through the organic glass container to be communicated to the water inlets.The water outlet pipe penetrates through the organic glass container to be communicated to the water outlets.When the capacitor deionization device is filled with water to be treated, after the collector electrode making contact with the water to be treated is powered on, capacitor deionization operation is performed on the water to be treated through the capacitor deionization device.The embodiment of the invention further provides a capacitor deionization system and method.
Description
Technical field
The present invention relates to capacitive deionization technical field, particularly to a kind of capacitor deionizing instrument, system and capacitive deionization method.
Background technology
Traditional capacitance deionizer is to be placed in the middle of two capacitive deionization modules by a pair or several adsorption electrode to parallel placement, capacitor deionizing instrument is made to be placed in current, when current flow through adsorption electrode, ion in solution can be attracted on electrode, reduce solution concentration, this mode can increase the internal resistance of whole electrode, causes the consequence that running cost is too high. Additionally, due to the reason of water self gravitation, current can not cover whole electrode, causes the reduction of the effective contact area of electrode.
Summary of the invention
In view of this, it is necessary to a kind of capacitor deionizing instrument, system and capacitive deionization method are provided.
The embodiment of the present invention provides a kind of capacitor deionizing instrument, it is characterized in that, including: electrode pair, electrode is to carriage, plexiglass box, for the colelctor electrode being energized, for being connected to the water inlet pipe in former pond and for being connected to the outlet pipe of water purifying tank, the first electrode that carriage is included being oppositely arranged by described electrode puts face, second electrode puts face, water inlet and outlet, described electrode is to including the first carbon resistance rod and the second carbon electrode, first electrode is put face and is placed with described first carbon resistance rod, described second electrode is put face and is placed with described second carbon resistance rod, the water-retention hollow structure for putting the pending water from former pond is had between described first carbon resistance rod and described second carbon resistance rod, described water-retention hollow structure is connected with described water inlet and described outlet, described capacitor deionizing instrument include at least two pairs of described electrodes to and at least two for supporting the electrode of placing said electrodes pair to carriage, adjacent two described electrodes between be placed with ion exchange membrane, all described electrodes to and all described electrodes carriage is respectively positioned in described plexiglass box, described plexiglass box is the sealing container of a kind of thick inwall, described water inlet pipe is communicated to described water inlet through described plexiglass box, described outlet pipe is communicated to described outlet through described plexiglass box, when described capacitor deionizing instrument loads described pending water, after the described colelctor electrode energising contacted with described pending aqueous phase, described pending water is carried out capacitive deionization operation by described capacitor deionizing instrument.
The embodiment of the present invention also provides for a kind of capacitive deionization system, it is characterized in that, including: for holding the former pond of pending water, first capacitor deionizing instrument, second capacitor deionizing instrument, 3rd capacitor deionizing instrument and the 4th capacitor deionizing instrument, for holding the water purifying tank of gained water after deionization processes, and for controlling the transition pond of inflow, also include for powering, with described first capacitor deionizing instrument, described second capacitor deionizing instrument, the power supply that described 3rd capacitor deionizing instrument and described 4th capacitor deionizing instrument are electrically connected, state former pond and be connected to described transition pond, on the water pipe in described transition pond, concatenation is for controlling the valve V1 of discharge, one filter and for adopting shunt conduit after monitoring the first water ga(u)ge of discharge, described shunt conduit concatenation valve V2 is connected to the water inlet pipe of described first capacitor deionizing instrument, described shunt conduit also concatenates valve V3 and is connected to the water inlet pipe of described 3rd capacitor deionizing instrument, the water inlet pipe of described second capacitor deionizing instrument is connected to the outlet pipe of described first capacitor deionizing instrument, the outlet pipe of described second capacitor deionizing instrument is connected and is accessed valve V4 after the first conductivity meter, the water inlet pipe of described 4th capacitor deionizing instrument is connected to the outlet pipe of described 3rd capacitor deionizing instrument, the outlet pipe of described 4th capacitor deionizing instrument is connected and is accessed described valve V4 after the second conductivity meter, described valve V4 series connection for open described through deionization process after gained water be followed by into described water purifying tank to the valve V5 of described water purifying tank, second gauge, described valve V4 also connects for making current access described transition pond after being back to the valve V6 in described transition pond, the 3rd effusion meter, described transition pond is placed with the liquid level sensor for monitoring the described transition pond water yield, described first capacitor deionizing instrument, described second capacitor deionizing instrument, described 3rd capacitor deionizing instrument and described 4th capacitor deionizing instrument are aforesaid capacitor deionizing instrument.
The embodiment of the present invention also provides for a kind of capacitive deionization method, including:
In capacitive deionization system, power supply is that the first capacitor deionizing instrument, the second capacitor deionizing instrument, the 3rd capacitor deionizing instrument, the 4th capacitor deionizing instrument are powered, and described capacitive deionization system is aforesaid capacitive deionization system;
Valve V1 in open described capacitive deionization system, in former pond pending water flow through transition pond, filter and first-class gauge laggard enter shunt conduit;
Open valve V2, makes described pending water flow into described first capacitor deionizing instrument;
Described pending water is carried out capacitive deionization process by described first capacitor deionizing instrument, and by the water output after described first capacitor deionizing instrument processes to described second capacitor deionizing instrument;
Described water after described first capacitor deionizing instrument processes is carried out capacitive deionization process by described second capacitor deionizing instrument again, and by the water output after described second capacitor deionizing instrument processes to valve V4;
The first electrical conductivity of described water after described second capacitor deionizing instrument processes measured by first conductivity meter, if the conductivity values no longer continuous decrease that described first electrical conductivity measured compared to the described first conductivity meter last time, then open valve V5 is by described water output after described second capacitor deionizing instrument processes to water purifying tank; If the conductivity values continuous decrease that described first electrical conductivity measured compared to the described first conductivity meter last time, then open valve V6 is by described water output extremely described transition pond after described second capacitor deionizing instrument processes;
Open valve V3, makes described pending water flow into described 3rd capacitor deionizing instrument;
Described pending water is carried out capacitive deionization process by described 3rd capacitor deionizing instrument, and by the water output after described 3rd capacitor deionizing instrument processes to described 4th capacitor deionizing instrument;
Described water after described 3rd capacitor deionizing instrument processes is carried out capacitive deionization process by described 4th capacitor deionizing instrument again, and by the water output after described 4th capacitor deionizing instrument processes to described valve V4;
The second electrical conductivity of described water after described 4th capacitor deionizing instrument processes measured by second conductivity meter, if the conductivity values no longer continuous decrease that described second electrical conductivity measured compared to the described second conductivity meter last time, then open described valve V5 is by described water output after described 4th capacitor deionizing instrument processes to described water purifying tank; If the conductivity values continuous decrease that described second electrical conductivity measured compared to the described second conductivity meter last time, then open described valve V6 is by described water output extremely described transition pond after described 4th capacitor deionizing instrument processes.
The capacitor deionizing instrument that the embodiment of the present invention provides can improve contact area and the adsorption efficiency of current and electrode pair preferably, to improve the utilization rate of electrode pair, the capacitive deionization system that the embodiment of the present invention provides can automatically control the change of electrical conductivity and temperature in electric capacity deionization process operation process, improves the efficiency of capacitive deionization technique.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, the accompanying drawing used required in embodiment will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the embodiment of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Accompanying drawing 1 is the structure composition schematic diagram of the capacitor deionizing instrument of a better embodiment.
The structure of carriage is formed schematic diagram by the electrode that accompanying drawing 2 is a better embodiment.
The structure of carriage is formed schematic diagram by the electrode that accompanying drawing 3 is another better embodiment.
Accompanying drawing 4 is the structure composition schematic diagram of the capacitive deionization system of a better embodiment.
Wherein, capacitor deionizing instrument 10, electrode is to carriage 11, first electrode puts face 111, second electrode puts face 112, water inlet 113, outlet 114, first drainage thread fixed edge 115, second drainage thread fixed edge 116, enter waterside 117, outlet edge 118, drainage thread 119, plexiglass box 12, water inlet pipe 13, outlet pipe 14, former pond 21, first capacitor deionizing instrument 221, second capacitor deionizing instrument 222, 3rd capacitor deionizing instrument 223, 4th capacitor deionizing instrument 224, water purifying tank 23, transition pond 24, power supply 25, first conductivity meter 261, second conductivity meter 262, filter 27.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As shown in Figure 1-Figure 3, the embodiment of the present invention provides a kind of capacitor deionizing instrument 10, it comprises the steps that electrode pair, electrode is to carriage 1, plexiglass box 2, for the colelctor electrode being energized, for being connected to the water inlet pipe 13 in former pond and for being connected to the outlet pipe 14 of water purifying tank, the first electrode that carriage 1 is included being oppositely arranged by electrode puts face 111, second electrode puts face 112, water inlet 113 and outlet 114, electrode is to including the first carbon resistance rod and the second carbon electrode, first electrode is put face and is placed with the first carbon resistance rod, second electrode is put face and is placed with the second carbon resistance rod, the water-retention hollow structure for putting the pending water from former pond is had between first carbon resistance rod and the second carbon resistance rod, water-retention hollow structure is connected with water inlet 113 and outlet 114, capacitor deionizing instrument 10 include at least two pairs of electrodes to and at least two for supporting the electrode placing electrode pair to carriage 11, adjacent two electrodes between be placed with ion exchange membrane, such as, with next electrode, ion exchange membrane can be placed in the position of carriage 11 joint at the second carbon electrode, make ion exchange membrane with next electrode, the water-retention hollow structure of carriage 11 be contacted, all electrodes to and all electrodes carriage is respectively positioned in plexiglass box 12, wherein, plexiglass box 12 is the sealing container of a kind of thick inwall, as shown in Figure 1, capacitor deionizing instrument 10 surrounding is very thick lucite, in order to reinforce plexiglass box 12, girth member 122 can also be set inside plexiglass box 12, water inlet 13 is communicated to each electrode water inlet 113 to carriage 11 through plexiglass box 12, outlet pipe 14 is communicated to each electrode outlet 114 to carriage 11 through plexiglass box 12, when capacitor deionizing instrument 10 loads pending water, after the colelctor electrode energising contacted with pending aqueous phase, pending water is carried out capacitive deionization operation by capacitor deionizing instrument. in the embodiment of the present invention, colelctor electrode can be a kind of graphite flake.
In the embodiment of the present invention, the material of electrode supporting frame can be nylon, it can pass through the direct printing shaping of 3D printing technique, the shape of electrode supporting frame, size and position feature can be programmed in computer by a kind of software program, by the control of computer, 3D printing technique is utilized to carry out printing manufacture.
The electrode supporting frame that the embodiment of the present invention provides can fixed electrode pair preferably, improve contact area and the adsorption efficiency of current and adsorption electrode, and there is make efficiency height, feature that production cost is low.
In the capacitor deionizing instrument 10 of the embodiment of the present invention, due to the support of plexiglass box 12, when capacitor deionizing instrument 10 needs place 20 to electrode pair time, 20 electrodes can be adopted carriage. Wherein, adjacent two electrodes support a carbon electrode to fixing between carriage.
In the capacitor deionizing instrument 10 of the embodiment of the present invention, the water-retention hollow structure of carriage 11 is a square structure by electrode, water-retention hollow structure by electrode to the first drainage thread fixed edge 115 on carriage 11, second drainage thread fixed edge 116, enter waterside 117 and outlet edge 118 surrounds, as shown in the figure, first drainage thread fixed edge 115 and the second drainage thread fixed edge 116 are oppositely arranged, enter waterside 117 to be oppositely arranged with outlet edge 118, water-retention hollow structure is provided with drainage thread 119, one end of drainage thread 119 is fixedly attached on the first drainage thread fixed edge 115 or the second drainage thread fixed edge 116, the other end is empty, carriage 11 is included at least two drainage threads 119 by electrode, article at least two, drainage thread 119 is respectively fixedly connected with in the first drainage thread fixed edge 115 or the second drainage thread fixed edge 116, article at least two, in drainage thread, two drainage threads of arbitrary neighborhood are not attached to same drainage thread fixed edge,Enter and waterside 117 is provided with water inlet 113, outlet edge 118 is provided with outlet 114. The size of water-retention hollow structure can be 612mm × 8mm × 0.6mm, and the thickness of electrode putting groove can be 1.6mm.
In the capacitor deionizing instrument 10 of the embodiment of the present invention, first electrode of carriage 11 is put and is provided with bulge-structure on face 111 by electrode, second electrode is put and is provided with concave inward structure on face 112, bulge-structure matches with the size of concave inward structure and relative position is consistent, when at least two electrode is placed carriage 11 is overlapping, bulge-structure on carriage 11 is placed in preceding electrode in the concave inward structure on carriage 11 by posterior electrode, so that relative position is fixed between each electrode supporting frame; Electrode is to being provided with at least one bulge-structure, at least one concave inward structure on carriage 11. In the embodiment of the present invention, the first electrode is put can be provided with 4 bulge-structures on face 111, and 4 bulge-structures lay respectively at the electrode four frame Angle Position to carriage 11; Second electrode is put can be provided with 4 concave inward structures on face 112,4 concave inward structures lay respectively at the electrode four frame Angle Position to carriage 11, and relatively uniform with 4 bulge-structure positions, bulge-structure can be hollow, and the part of hollow just constitutes concave inward structure.
The capacitor deionizing instrument that the embodiment of the present invention provides can improve the contact area of current and electrode pair preferably, electrode therein to carriage can fixed electrode pair preferably, improve the adsorption efficiency of adsorption electrode, to improve the utilization rate of electrode pair.
As shown in Figure 4, the embodiment of the present invention also provides for a kind of capacitive deionization system, it comprises the steps that the former pond 21 for holding pending water, first capacitor deionizing instrument 221, second capacitor deionizing instrument 222, 3rd capacitor deionizing instrument 223 and the 4th capacitor deionizing instrument 224, for holding the water purifying tank 23 of gained water after deionization processes, and for controlling the transition pond 24 of inflow, also include for powering, with the first capacitor deionizing instrument 221, second capacitor deionizing instrument 222, the power supply 25 that 3rd capacitor deionizing instrument 223 and the 4th capacitor deionizing instrument 224 are electrically connected, wherein, former pond 21 is connected to transition pond 24, on the water pipe in transition pond, concatenation is for controlling the valve V1 of discharge, filter 27 and for adopting shunt conduit after monitoring the water ga(u)ge F1 of discharge, shunt conduit concatenation valve V2 is connected to the water inlet pipe of the first capacitor deionizing instrument 221, shunt conduit also concatenates valve V3 and is connected to the water inlet pipe of the 3rd capacitor deionizing instrument 223, the water inlet pipe of the second capacitor deionizing instrument 222 is connected to the outlet pipe of the first capacitor deionizing instrument 221, the outlet pipe of the second capacitor deionizing instrument 222 is connected and is accessed valve V4 after the first conductivity meter 261, the water inlet pipe of the 4th capacitor deionizing instrument 224 is connected to the outlet pipe of the 3rd capacitor deionizing instrument 223, the outlet pipe of the 4th capacitor deionizing instrument 224 is connected and is accessed valve V4 after the second conductivity meter 262, valve V4 series connection accesses water purifying tank 23 for opening gained water after deionization processes after the valve V5 of water purifying tank 23, water ga(u)ge F2, and valve V4 also connects for making current access transition pond 24 after being back to the valve V6 in transition pond 24, water ga(u)ge F3, transition pond 24 is placed with the liquid level sensor for monitoring transition pond 24 water yield, first capacitor deionizing instrument the 221, second capacitor deionizing instrument the 222, the 3rd capacitor deionizing instrument 223 and the 4th capacitor deionizing instrument 224 are the capacitor deionizing instrument 10 of the arbitrary description of Fig. 1-Fig. 3.The capacitive deionization system of the embodiment of the present invention also includes the first water pump being connected between former pond 21 and transition pond 24, it is connected to the second water pump between transition pond 24 and valve V1, it is connected to the first conductivity meter 261, flows out the valve V7 of sample water for extracting the second capacitor deionizing instrument 222, and be connected to the second conductivity meter 262, flow out the valve V8 of sample water for extracting the 4th capacitor deionizing instrument 224.
Wherein, former pond 21 can hold the pending water yield 60 liters, in order to control current, can be monitored the water yield in transition pond 24 by liquid level sensor so that it is water quantity holding is at 5 liters, water ga(u)ge F1 may be configured as 2-20 l/h, when detecting that current water flow velocity exceedes preset value by water ga(u)ge F1, can reduce current by valve V1 or stop current, in systems, the first capacitor deionizing instrument 221 and the second capacitor deionizing instrument 222 are series relationship, and current can enter the first capacitor deionizing instrument 221 and the second capacitor deionizing instrument 222 carries out capacitive deionization process through valve V2, 3rd capacitor deionizing instrument 223 and the 4th capacitor deionizing instrument 224 are series relationship, and current can enter the 3rd capacitor deionizing instrument 223 and the 4th capacitor deionizing instrument 224 carries out capacitive deionization process through valve V3, in actual use, if the water yield of pending water and little time, can only open valve V2 or valve V3, when the pending water yield is very big, valve V2 and valve V3 can be opened simultaneously, make these four capacitor deionizing instruments work simultaneously, in going out of the second capacitor deionizing instrument 222, water line is placed with the first conductivity meter 261, first conductivity meter 261 is for measuring after the first capacitor deionizing instrument 221 and the second capacitor deionizing instrument 222 process, whether the electrical conductivity of solution processing water has tended to a fixed value, namely water concentration has descended to no longer change, if compared to the conductivity values still continuous decrease that the last time measures, then need that process water is discharged to transition pond 24 by valve V6 and carry out re-circulation process, until the electrical conductivity of solution processing water has tended to a fixed value, water concentration has descended to no longer change, now can will process water by open valve V5 to export to water purifying tank 23, wherein, water ga(u)ge F3 it is provided with in the output channel of valve V6, the detection numerical value of water ga(u)ge F3 can be set to 2-20 l/h, when detecting that current water flow velocity exceedes preset value by water ga(u)ge F3, current can be reduced by valve V6 or stop current, same, in going out of the 4th capacitor deionizing instrument 224, water line is placed with the second conductivity meter 262, second conductivity meter 262 is for measuring after the 3rd capacitor deionizing instrument 223 and the 4th capacitor deionizing instrument 224 process, whether the electrical conductivity of solution processing water has tended to a fixed value, namely water concentration has descended to no longer change, if compared to the conductivity values still continuous decrease that the last time measures, then need that process water is discharged to transition pond 24 by valve V6 and carry out re-circulation process, until water quality reaching standard, the electrical conductivity of solution processing water has tended to a fixed value, water concentration has descended to no longer change, now can will process water by open valve V5 to export to water purifying tank 23, wherein, water ga(u)ge F2 it is provided with in the output channel of valve V5, the detection numerical value of water ga(u)ge F2 can be set to 0.5-5 l/h, when detecting that current water flow velocity exceedes preset value by water ga(u)ge F2, current can be reduced by valve V5 or stop current.Furthermore it is also possible to extract the sample water after the second capacitor deionizing instrument 222 processes by valve V7, extract the sample water after the 4th capacitor deionizing instrument 224 processes by valve V8, for analyzing water quality.
The treating capacity of capacitive deionization system that the embodiment of the present invention provides can reach 100 liters/day, processes that solution TDS is maximum reaches 5000ppm concentration.
The embodiment of the present invention also provides for a kind of applying the capacitive deionization method that above-mentioned capacitive deionization system carries out, and detailed description of the invention can comprise the following steps that
Step S1, in capacitive deionization system, power supply 25 is that first capacitor deionizing instrument the 221, second capacitor deionizing instrument the 222, the 3rd capacitor deionizing instrument the 223, the 4th capacitor deionizing instrument 224 is powered, and capacitive deionization system is the capacitive deionization system described by Fig. 3;
Step S2, the valve V1 in open capacitive deionization system, in former pond 21, pending water enters shunt conduit after flowing through transition pond 24, filter 27 and water ga(u)ge F1;
Step S3, open valve V2, make pending water flow into the first capacitor deionizing instrument 221;
Step S4, pending water is carried out capacitive deionization process by the first capacitor deionizing instrument 221, and exports the water after the first capacitor deionizing instrument 221 processes to the second capacitor deionizing instrument 222;
Step S5, the water after the first capacitor deionizing instrument 221 processes is carried out capacitive deionization process by the second capacitor deionizing instrument 222 again, and exports the water after the second capacitor deionizing instrument 222 processes to valve V4;
Step S6, the first electrical conductivity of the water after the second capacitor deionizing instrument 222 processes measured by first conductivity meter 261, if the first electrical conductivity is compared to the last conductivity values no longer continuous decrease measured of the first conductivity meter 261, then the water after the second capacitor deionizing instrument 222 processes is exported to water purifying tank 23 by open valve V5; If the first electrical conductivity is compared to the last conductivity values continuous decrease measured of the first conductivity meter 261, then the water after the second capacitor deionizing instrument 222 processes is exported to transition pond 24 by open valve V6;
Step S7, open valve V3, make pending water flow into the 3rd capacitor deionizing instrument 223;
Step S8, pending water is carried out capacitive deionization process by the 3rd capacitor deionizing instrument 223, and exports the water after the 3rd capacitor deionizing instrument 223 processes to the 4th capacitor deionizing instrument 224;
Step S9, the water after the 3rd capacitor deionizing instrument 223 processes is carried out capacitive deionization process by the 4th capacitor deionizing instrument 224 again, and exports the water after the 4th capacitor deionizing instrument 224 processes to valve V4;
Step S10, the second electrical conductivity of the water after the 4th capacitor deionizing instrument 224 processes measured by second conductivity meter, if the second electrical conductivity is compared to the last conductivity values no longer continuous decrease measured of the second conductivity meter 262, then the water after the 4th capacitor deionizing instrument 224 processes is exported to water purifying tank 23 by open valve V5; If the second electrical conductivity is compared to the last conductivity values continuous decrease measured of the second conductivity meter 262, then the water after the 4th capacitor deionizing instrument 224 processes is exported to transition pond 24 by open valve V6.
By above-mentioned steps it can be seen that the capacitive deionization system of the embodiment of the present invention is a kind of circulating treating system, connect, by the circulation of pipe fitting, the operation realizing capacitive deionization system, also accurately control the concentration of final products water simultaneously.Can realize processing the water holdup time in systems thus reaching to control the concentration of final products water by simply controlling the ratio of circulation water velocity and product water flow velocity. Wherein preposition container (former pond) is connected with transition container (transition pond), and in transition container, the volume size of water is controlled by switch sensor (liquid level sensor). When system brings into operation, in transition container, the concentration of water is the same with influent density in preposition container. Once program brings into operation, in transition container, the concentration of water initially drops until not till change. Concentration over time with recirculated water speed, the efficiency of capacitive deionization module is relevant with the volume of transition container. Further, it is necessary to it should be noted that when in transition container, solution reaches to balance, system runs program to switch to direct current mode from endless form. If additionally, the concentration setting water outlet is definite value, then the desalting efficiency of system is just unrelated with the initial concentration of solution, only relevant with the efficiency of device, during operation, only change the working time. The system of the embodiment of the present invention can be controlled by relay and electromagnetic valve and power supply. In running, the change of electrical conductivity and temperature all can by automatic controlling system.
The capacitive deionization system that the embodiment of the present invention provides can automatically control the change of electrical conductivity and temperature in electric capacity deionization process operation process, improves the efficiency of capacitive deionization technique.
Step in embodiment of the present invention method can carry out order according to actual needs and adjust, merges and delete.
Module or unit in embodiment of the present invention device can merge according to actual needs, divide and delete.
Above disclosed it is only present pre-ferred embodiments, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are made, still fall within the scope that invention is contained.
Claims (9)
1. a capacitor deionizing instrument, it is characterized in that, including: electrode pair, electrode is to carriage, plexiglass box, for the colelctor electrode being energized, for being connected to the water inlet pipe in former pond and for being connected to the outlet pipe of water purifying tank, the first electrode that carriage is included being oppositely arranged by described electrode puts face, second electrode puts face, water inlet and outlet, described electrode is to including the first carbon resistance rod and the second carbon electrode, first electrode is put face and is placed with described first carbon resistance rod, described second electrode is put face and is placed with described second carbon resistance rod, the water-retention hollow structure for putting the pending water from former pond is had between described first carbon resistance rod and described second carbon resistance rod, described water-retention hollow structure is connected with described water inlet and described outlet, described capacitor deionizing instrument include at least two pairs of described electrodes to and at least two for supporting the electrode of placing said electrodes pair to carriage, adjacent two described electrodes between be placed with ion exchange membrane, all described electrodes to and all described electrodes carriage is respectively positioned in described plexiglass box, described plexiglass box is the sealing container of a kind of thick inwall, described water inlet pipe is communicated to described water inlet through described plexiglass box, described outlet pipe is communicated to described outlet through described plexiglass box, when described capacitor deionizing instrument loads described pending water, after the described colelctor electrode energising contacted with described pending aqueous phase, described pending water is carried out capacitive deionization operation by described capacitor deionizing instrument.
2. capacitor deionizing instrument as claimed in claim 1, it is characterised in that carriage is that a kind of nylon material printed by 3D printing technique supports framework by described electrode.
3. capacitor deionizing instrument as claimed in claim 1, it is characterised in that described capacitor deionizing instrument includes at least two ten described electrodes to carriage, for the described electrode pair of fixing support.
4. capacitor deionizing instrument as claimed in claim 3, it is characterised in that in described capacitor deionizing instrument, adjacent two electrodes support a carbon electrode to fixing between carriage.
5. capacitor deionizing instrument as claimed in claim 1, it is characterized in that, described water-retention hollow structure is a square structure, described water-retention hollow structure by described electrode to the first drainage thread fixed edge on carriage, second drainage thread fixed edge, enter waterside and outlet edge surrounds, described first drainage thread fixed edge and described second drainage thread fixed edge are oppositely arranged, described enter waterside and described outlet edge be oppositely arranged, described water-retention hollow structure is provided with drainage thread, one end of described drainage thread is fixedly attached on described first drainage thread fixed edge or described second drainage thread fixed edge, the other end is empty, carriage is included at least two described drainage threads by described electrode, described at least two described drainage threads are respectively fixedly connected with in described first drainage thread fixed edge or described second drainage thread fixed edge, in described at least two described drainage threads, two described drainage threads of arbitrary neighborhood are not attached to same drainage thread fixed edge, described enter waterside is provided with described water inlet, described outlet edge is provided with described outlet.
6. capacitor deionizing instrument as claimed in claim 1, it is characterised in that extremely a kind of graphite flake of described current collection.
7. a capacitive deionization system, it is characterized in that, including: for hold the former pond of pending water, the first capacitor deionizing instrument, the second capacitor deionizing instrument, the 3rd capacitor deionizing instrument and the 4th capacitor deionizing instrument, for holding the water purifying tank of gained water after deionization processes and for controlling the transition pond of inflow, also include the power supply being electrically connected for that power and described first capacitor deionizing instrument, described second capacitor deionizing instrument, described 3rd capacitor deionizing instrument and described 4th capacitor deionizing instrument, described former pond is connected to described transition pond, on the water pipe in described transition pond, concatenation is for controlling the valve V1 of discharge, one filter and for adopting shunt conduit after monitoring the water ga(u)ge F1 of discharge, described shunt conduit concatenation valve V2 is connected to the water inlet pipe of described first capacitor deionizing instrument, described shunt conduit also concatenates valve V3 and is connected to the water inlet pipe of described 3rd capacitor deionizing instrument, the water inlet pipe of described second capacitor deionizing instrument is connected to the outlet pipe of described first capacitor deionizing instrument, the outlet pipe of described second capacitor deionizing instrument is connected and is accessed valve V4 after the first conductivity meter, the water inlet pipe of described 4th capacitor deionizing instrument is connected to the outlet pipe of described 3rd capacitor deionizing instrument, the outlet pipe of described 4th capacitor deionizing instrument is connected and is accessed described valve V4 after the second conductivity meter, described valve V4 series connection for open described through deionization process after gained water after the valve V5 of described water purifying tank, water ga(u)ge F2, access described water purifying tank, described valve V4 also connects for making current access described transition pond after being back to the valve V6 in described transition pond, water ga(u)ge F3, described transition pond is placed with the liquid level sensor for monitoring the described transition pond water yield,Described first capacitor deionizing instrument, described second capacitor deionizing instrument, described 3rd capacitor deionizing instrument and described 4th capacitor deionizing instrument are the arbitrary described capacitor deionizing instrument of claim 1-6.
8. capacitive deionization system as claimed in claim 7, it is characterised in that also include:
It is connected to the first water pump between described former pond and described transition pond;
It is connected to the second water pump between described transition pond and described valve V1;
It is connected to described first conductivity meter, flows out the valve V7 of sample water for extracting described second capacitor deionizing instrument;
It is connected to described second conductivity meter, flows out the valve V8 of sample water for extracting described 4th capacitor deionizing instrument.
9. a capacitive deionization method, it is characterised in that including:
In capacitive deionization system, power supply is that the first capacitor deionizing instrument, the second capacitor deionizing instrument, the 3rd capacitor deionizing instrument, the 4th capacitor deionizing instrument are powered, and described capacitive deionization system is the arbitrary described capacitive deionization system of claim 7-8;
Valve V1 in open described capacitive deionization system, in former pond, pending water enters shunt conduit after flowing through transition pond, filter and water ga(u)ge F1;
Open valve V2, makes described pending water flow into described first capacitor deionizing instrument;
Described pending water is carried out capacitive deionization process by described first capacitor deionizing instrument, and by the water output after described first capacitor deionizing instrument processes to described second capacitor deionizing instrument;
Described water after described first capacitor deionizing instrument processes is carried out capacitive deionization process by described second capacitor deionizing instrument again, and by the water output after described second capacitor deionizing instrument processes to valve V4;
The first electrical conductivity of described water after described second capacitor deionizing instrument processes measured by first conductivity meter, if the conductivity values no longer continuous decrease that described first electrical conductivity measured compared to the described first conductivity meter last time, then open valve V5 is by described water output after described second capacitor deionizing instrument processes to water purifying tank; If the conductivity values continuous decrease that described first electrical conductivity measured compared to the described first conductivity meter last time, then open valve V6 is by described water output extremely described transition pond after described second capacitor deionizing instrument processes;
Open valve V3, makes described pending water flow into described 3rd capacitor deionizing instrument;
Described pending water is carried out capacitive deionization process by described 3rd capacitor deionizing instrument, and by the water output after described 3rd capacitor deionizing instrument processes to described 4th capacitor deionizing instrument;
Described water after described 3rd capacitor deionizing instrument processes is carried out capacitive deionization process by described 4th capacitor deionizing instrument again, and by the water output after described 4th capacitor deionizing instrument processes to described valve V4;
The second electrical conductivity of described water after described 4th capacitor deionizing instrument processes measured by second conductivity meter, if the conductivity values no longer continuous decrease that described second electrical conductivity measured compared to the described second conductivity meter last time, then open described valve V5 is by described water output after described 4th capacitor deionizing instrument processes to described water purifying tank; If the conductivity values continuous decrease that described second electrical conductivity measured compared to the described second conductivity meter last time, then open described valve V6 is by described water output extremely described transition pond after described 4th capacitor deionizing instrument processes.
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| CN105668723B (en) | 2019-03-05 |
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