CN106784951B - A kind of device and method of tubular biological-cathode microbiological desalination fuel cell desalination - Google Patents
A kind of device and method of tubular biological-cathode microbiological desalination fuel cell desalination Download PDFInfo
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
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Abstract
The invention belongs to seawater and brackish water desalination, microorganism electrochemical, microorganism desalination fuel cell field, it is related to a kind of tubular biological-cathode microbiological desalination fuel cell desalter and method.Described device is made of resistance, external circuit, anolyte water outlet, cathode and cathode biomembrane, catholyte, cation-exchange membrane, desalting chamber, catholyte water inlet, catholyte water outlet, cathode chamber top cover, anion-exchange membrane, anode and anode biomembrane, anolyte, tubular shell of reactor, anolyte water inlet, aeration head, bracket.The method comprises the following steps: the anaerobic acclimation of (1) anode microorganism；(2) starting of MDC reactor；(3) the desalination operation of MDC；(4) continuous flow operating condition.The invention has the advantages that: it is suitable for applying in practice；Maximum power density can reach 6.21 W/m3；When continuous batch operation, desalination rate is 95.5 mg/h；Structure is simple, easy to operate, and cost is relatively low, and rate is higher.
Description
Technical field
The present invention relates to seawater and brackish water desalination, microorganism electrochemical system, microorganism desalination fuel cell system necks
Domain more particularly to a kind of tubular biological-cathode microbiological desalination fuel cell desalter and method.
Background technique
Microorganism desalination fuel cell (MDC) be it is a kind of can produce electricity simultaneously, desalination and the device for removing organic matter.Its base
Originally it is configured as three cell structures, respectively anode chamber, desalting chamber and cathode chamber, anion exchange is placed between anode chamber and desalting chamber
Film；Cation-exchange membrane is placed between desalting chamber and cathode chamber.Under anaerobic, the microorganism decomposition anolyte of anode surface
Interior organic substrates generate electronics and H+；Electronics reaches cathode surface by external circuit, is received by the electron acceptor of cathode, produces
Raw electric current.In this process, since anode chamber generates a large amount of remaining H+, therefore, the indoor Cl of desalination-It is handed over by anion
It changes film to enter in anode chamber, due to the effect of ionic equilibrium, Na+It will be entered in cathode chamber by cation-exchange membrane, because
This, the concentration decline of salt water in desalting chamber.
MDC has caused the concern of numerous scholars since proposition.But in research before, mostly use the potassium ferricyanide
The air cathode of chemical cathode or Pt/C as catalyst.During using the potassium ferricyanide as cathode, not only iron cyaniding
Potassium is consumed and makes higher cost, and the used potassium ferricyanide can cause secondary pollution to environment.And Pt/C conduct
The air cathode of catalyst, although will not pollute, Pt/C cost is excessively high, limits the possibility of its practical application.And from
From configuration, present reactor mostly uses " H " type structure, and the exchange area between anode chamber, cathode chamber and desalting chamber is smaller,
Desalting efficiency is not high.
Summary of the invention
The object of the present invention is to provide one kind using microorganism as cathod catalyst, using oxygen as cathode electronics receptor,
Improve the tubular biological-cathode microbiological desalination fuel cell desalination of the area of amberplex between desalting chamber and the anode chamber and the cathode chamber
Device and method.The purpose that the device can achieve and reduce operating cost, improves desalination rate.
To achieve the above object, the technical solution adopted by the present invention is as follows:
A kind of device of tubular biological-cathode microbiological desalination fuel cell desalination, described device include extrernal resistance, external circuit,
Anolyte water outlet, cathode and cathode biomembrane, catholyte, cation-exchange membrane, desalting chamber, catholyte water inlet, catholyte
Water outlet, cathode chamber top cover, anion-exchange membrane, anode and anode biomembrane, anolyte, tubular shell of reactor, anolyte
Water inlet, aeration head, bracket, desalting chamber's water inlet, desalting chamber's water outlet；
The reactor is sleeve-like configuration, and reactor bottom end is closed end, and top is open end, and reactor is by tubular
The composition of housing made of inner sleeve made of shell of reactor, cation-exchange membrane and anion-exchange membrane, the inner sleeve, housing
And tubular shell of reactor is successively set with from the inside to the outside, and inner sleeve and housing are affixed with the bottom surface of tubular shell of reactor, cylinder
Shape shell of reactor is supported by bracket, and the space between inner sleeve and housing is desalting chamber, and it is molten that NaCl is added in the desalting chamber
Liquid, the concentration of NaCl solution are 5 ~ 35 g/L；The desalting chamber lower part is equipped with desalting chamber's water inlet, and desalting chamber top is equipped with desalination
Room water outlet；Space between housing and tubular shell of reactor is anode chamber, and the space of inner sleeve is cathode chamber, the cathode chamber
Top is equipped with cathode chamber top cover, and the cathode and cathode biomembrane are arranged in cathode chamber, and catholyte, tubular are full of in cathode chamber
Shell of reactor bottom is equipped with the catholyte water inlet communicated with cathode chamber, and the cathode chamber top cover is equipped with and communicates with cathode chamber
Catholyte water outlet, the aeration head is mounted on tubular shell of reactor bottom and communicates with cathode chamber, the anode and sun
Pole biomembrane is arranged in anode chamber, anolyte is full of in anode chamber, the top and bottom of tubular shell of reactor side wall are successively
Equipped with the anolyte water outlet and anolyte water inlet communicated with anode chamber, titanium silk and external circuit phase is respectively adopted in cathode and anode
Connection, external circuit are connected using conducting wire.
A method of tubular biological-cathode microbiological desalination fuel cell desalination, the method are realized using above-mentioned apparatus
Specific step is as follows:
Step 1: the secondary settling tank activated sludge 2L of municipal sewage plant, the activated sludge anaerobic acclimation of anode microorganism: are taken
MLSS be 5000mg/L, be added in the closed glass jar of 5L, be added anolyte 2L, use magnetic stirrer, carry out
Anaerobic acclimation；Every 11h, 0.5h is precipitated, supernatant 2L is changed, rejoins new anolyte 2L, need to tame 72h altogether；
Step 2: the starting of reactor: when starting reactor, anode is dirty using the activity that domestication in step 1 is completed
Mud, the additional amount of activated sludge are the 10% of anode building volume, and the indoor anolyte of anode is full of；Cathode is dirty using aerobic activity
Mud or sanitary sewage, the aerobic activated sludge additional amount are the 10% of cathode building volume, the sanitary sewage additional amount
It is the 50% of cathode building volume, its complementary space is full of with catholyte in cathode chamber；It is 35 in desalting chamber during reactor start-up
The salting liquid of g/L；External resistance is 2000 Ω, when external resistance both end voltage reaches 400 mV or more, that is, is started successfully；
Step 3: reactor desalination operation: reactor start-up success after, desalting chamber in completion brine strength from 5g/L ~
The desalination of 35 g/L is run, and external resistance uses 1 ~ 200 Ω；When changing water using continuous batch, anolyte, catholyte are every 48h, replacement
A batch；When the conductivity of salt water in desalting chamber falls to 2 mS/cm or less, the indoor salting liquid of desalination is replaced, represents one
Desalination period is completed；
Step 4: continuous flow operating condition: reactor uses the continuous flow method of operation, and anode chamber utilizes peristaltic pump, uses
Lower end water inlet, water outlet are discharged by the way of nature overflow；Cathode chamber water inlet, water outlet are all made of peristaltic pump, two peristaltic pumps
Maintain like revolving speed；Salting liquid still takes continuous batch to run in desalting chamber, and when conductivity falls to 2 mS/cm or less, replacement is de-
The indoor salting liquid of salt represents a desalination period and completes.
Compared with prior art, the beneficial effects of the present invention are:
(1) present invention realizes low cost operation MDC, is suitable for being applied in practical projects；
(2) when using 1.64 g/L sodium acetates as substrate, the maximum power density of MDC can achieve 6.21 W/m3；?
Under continuous batch service condition, desalination rate is 95.5 mg/h；
(3) the configuration of the present invention is simple, it is easy to operate, while reducing operating cost, improve desalination rate.
(4) tubular MDC is used, the exchange area between cathode chamber, anode chamber and desalting chamber improves 3 times or more.
(5) within the scope of 150 ~ 250 ohm, extrernal resistance has preferable operational effect at 1 ~ 200 ohm for internal resistance of the present invention.
Detailed description of the invention
Fig. 1 is the axonometric drawing of the device of tubular biological-cathode microbiological desalination fuel cell desalination；
Fig. 2 is that continuous batch runs voltage change figure in a desalination period；
Fig. 3 is that continuous batch runs desalting chamber's concentration variation diagram in a desalination period.
In figure, extrernal resistance 1, external circuit 2, anolyte water outlet 3, cathode and cathode biomembrane 4, catholyte 5, cation exchange
Film 6, desalting chamber 7, catholyte water inlet 8, catholyte water outlet 8a, cathode chamber top cover 9, anion-exchange membrane 10, anode and sun
Pole biomembrane 11, anolyte 12, tubular shell of reactor 13, anolyte water inlet 14, aeration head 15, bracket 16, desalting chamber into
The mouth of a river 17, desalting chamber's water outlet 18.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawings and examples, and however, it is not limited to this,
All modification or equivalent replacement of the technical solution of the present invention are made, without departing from the spirit of the technical scheme of the invention and model
It encloses, should all cover within the protection scope of the present invention.
Specific embodiment 1: as shown in Figure 1, a kind of dress of tubular biological-cathode microbiological desalination fuel cell desalination
It sets, described device includes extrernal resistance 1, external circuit 2, anolyte water outlet 3, cathode and cathode biomembrane 4, catholyte 5, cation friendship
Change film 6, desalting chamber 7, catholyte water inlet 8, catholyte water outlet 8a, cathode chamber top cover 9, anion-exchange membrane 10, anode and
Anode biomembrane 11, anolyte 12, tubular shell of reactor 13, anolyte water inlet 14, aeration head 15, bracket 16(use have
Machine glass material is made), desalting chamber water inlet 17(is made of pmma material), desalting chamber water outlet 18(is using organic
Glass material is made)；
The reactor is sleeve-like configuration, and reactor bottom end is closed end, and top is open end, and reactor is by tubular
Shell of reactor 13(material is organic glass, with a thickness of 5mm), inner sleeve and anion exchange made of cation-exchange membrane 6
The composition of housing made of film 10, the inner sleeve, housing and tubular shell of reactor 13 be successively set with from the inside to the outside, and inner sleeve and outer
Cover affixed with the bottom surface of tubular shell of reactor 13, tubular shell of reactor 13 is supported by bracket 16, inner sleeve and housing it
Between space be spacing between desalting chamber's 7(inner sleeve and housing be 10mm), NaCl solution, NaCl is added in the desalting chamber 7
The concentration of solution is that 5 ~ 35 g/L(concentration are higher, and desalination rate is bigger)；The desalting chamber lower part is equipped with desalting chamber's water inlet 17,
Desalting chamber top is equipped with desalting chamber's water outlet 18；Space between housing and tubular shell of reactor 13 be anode chamber (housing with
Spacing between shell of reactor 13 is 10mm), the space of inner sleeve is cathode chamber (cathode chamber radius is 30mm), the cathode chamber
Top is 60mm equipped with 9 diameter of cathode chamber top cover 9(cathode chamber top cover), the cathode and cathode biomembrane 4(cathode material are optional
With the material based on carbon fiber such as carbon brush, carbon felt) it is arranged in cathode chamber, catholyte 5, tubular reaction are full of in cathode chamber
13 bottom of device shell is equipped with the catholyte water inlet 8 communicated with cathode chamber, and the cathode chamber top cover 9 is equipped with and communicates with cathode chamber
Catholyte water outlet 8a, the aeration head 15 is mounted on 13 bottom of tubular shell of reactor and communicates (aeration head with cathode chamber
Lower part connects aeration pump), the anode and anode biomembrane 11(its material can be identical as cathode material) be arranged in anode chamber,
Anolyte 12 is full of in anode chamber, the top and bottom of 13 side wall of tubular shell of reactor are successively arranged the sun communicated with anode chamber
Pole liquid water outlet 3 and anolyte water inlet 14, cathode and anode are respectively adopted titanium silk and are connected with external circuit 2, and the extrernal resistance 1 is set
It sets between cathode and anode and is connected with the conducting wire of external circuit 2.
Specific embodiment 2: as shown in Figure 1, tubular biological-cathode microbiological desalination described in specific embodiment one
The device of fuel cell desalination, the resistance value when extrernal resistance 1 starts are 500 ~ 2000 Ω, the resistance value of operation phase is 10 ~
200Ω。
Specific embodiment 3: as shown in Figure 1, tubular biological-cathode microbiological described in specific embodiment one or two
The device of desalination fuel cell desalination, the ingredient and proportion of the catholyte 5 are NaHCO32 g/L, KH2PO4 4.4 g/L,
K2HPO4•3H2O 3.4 g/L, NH4Cl 1 g/L, MgCl2•6H2O 0.1 g/L, CaCl2•2H20.1 g/L of O, yeast extract
10 mL of 0.1 g/L and Trace Metal solution；The ingredient and proportion of the microelement metallic solution are as follows: NiCl2·6H2O
0.024 g/L；Na2WO4·2H2O 0.025 g/L；Na2MoO40.025 g/L；FeSO4·7H2O 0.1 g/L；CaCl2·
2H2O 0.1 g/L；CoCl2·6H2O 0.1 g/L；CuSO4·5H2O 0.01 g/L；KAl(SO4)2·12H2O 0.01 g/L；
0.01 g/L of boric acid；0.13 g/L of zinc chloride；0.5 g/L of manganese sulfate；2.0 g/L of nitrilotriacetic acid；3.0 g/L of magnesium sulfate；
The ingredient and proportion of the anolyte are as follows: sodium acetate 1.64 g/L, KH2PO44.4g/L、K2HPO4•3H2O3.4 g/
L、NH4Cl1g/L、MgCl2•6H2O 0.1g/L、CaCl2•2H2O0.1 g/L, yeast extract 0.1g/L and Trace Metal solution
10 mL；The ingredient and proportion of the Trace Metal solution are identical as the microelement metallic solution of catholyte 5.
Specific embodiment 4: as shown in Figure 1, a kind of realized using device described in specific embodiment one, two or three
The method of tubular biological-cathode microbiological desalination fuel cell desalination, specific step is as follows for the method:
Step 1: the secondary settling tank activated sludge 2L of municipal sewage plant, the activated sludge anaerobic acclimation of anode microorganism: are taken
MLSS be 5000mg/L, be added in the closed glass jar of 5L, 12 2L of anolyte be added, using magnetic stirrer, into
Row anaerobic acclimation；Every 11h, 0.5h is precipitated, supernatant 2L is changed, rejoins new 12 2L of anolyte, need to tame 72h altogether；
Step 2: the starting of reactor: when starting reactor, anode is dirty using the activity that domestication in step 1 is completed
Mud, the additional amount of activated sludge are the 10% of anode building volume, and the indoor anolyte 12 of anode is full of；Cathode uses aerobic activity
Sludge or sanitary sewage, the aerobic activated sludge additional amount are the 10% of cathode building volume, and the sanitary sewage is added
Amount is the 50% of cathode building volume, its complementary space catholyte 5 is full of in cathode chamber；During reactor start-up, in desalting chamber 7
For the salting liquid of 35 g/L (no replacement is required for anolyte 12, and catholyte 5 needs regular replenishment)；External resistance 1 is 2000 Ω, works as dispatch from foreign news agency
It hinders 1 both end voltage and reaches 400 mV or more, that is, start successfully；
Step 3: the desalination operation of reactor: completed after reactor start-up success, in desalting chamber 7 brine strength from 5g/L ~
The desalination of 35 g/L is run, and external resistance 1 uses 1 ~ 200 Ω (external resistance 1 is smaller, and desalting effect is better)；Water is changed using continuous batch
When, anolyte 12, catholyte 5 are every 48h, replacement a batch；When the conductivity of salt water in desalting chamber 7 falls to 2 mS/cm or less
When, the salting liquid in desalting chamber 7 is replaced, a desalination period is represented and completes；
Step 4: continuous flow operating condition: reactor uses the continuous flow method of operation, and anode chamber utilizes peristaltic pump, uses
Lower end water inlet, water outlet are discharged by the way of nature overflow；Cathode chamber water inlet, water outlet are all made of peristaltic pump, two peristaltic pumps
Maintain like revolving speed；Salting liquid still takes continuous batch to run in desalting chamber, and when conductivity falls to 2 mS/cm or less, replacement is de-
The indoor salting liquid of salt represents a desalination period and completes；
Step 5: three Room continuous flow operating conditions: the continuous flow method of operation is respectively adopted in anode chamber, desalting chamber, cathode chamber.
Wherein, anode chamber and the cathode chamber continuous flow method of operation are identical as step 4, and peristaltic pump progress is respectively adopted in desalting chamber's Inlet and outlet water,
Lower end water inlet, upper end water outlet；The method is applicable in desalting chamber's inner salt water conductivity 5 ~ 10mS/cm of concentration, controls salt water in desalting chamber
The water conservancy residence time, water outlet conductivity can achieve 2mS/cm or less.
Embodiment 1:
This reactor is sleeve-like configuration, and outside uses organic glass, and interior to be separated by by anions and canons exchange membrane, cathode is adopted
Use the carbon felt of 4 pieces of 3 × 3 × 1cm as cathode, between be connected with diameter for the carbon-point of 5mm, the diameter of cathode chamber is 60mm,
Height is 200mm, and after electrode material is added, the effective volume of cathode chamber is about 510cm3.Between between desalting chamber and cathode chamber
Away from for 10mm(it is as shown in Figure 2), the effective volume of desalting chamber is about 435cm3.Anode electrode uses 3 piece of 3 × 5 × 0.8 cm's
Carbon felt is connected between carbon felt with titanium silk, and effective volume is about 515cm3。
Activated sludge, city domestic sewage, river bed bed mud etc. all can be used as inoculation in the starting of anode and biological-cathode
Source.In starting cathode, first by the inoculation source of inoculation, uses anode culture medium as substrate, tamed under conditions of anaerobism
72h.When starting MDC, the ratio that activated sludge is added in anode and cathode is 10%(V/V) or sanitary sewage 50%(V/V).It opens
The salting liquid for being 35 g/L during dynamic, in desalting chamber；Using the Starting mode of continuous batch, in this process, anolyte is not
It needs replacing, catholyte regular replenishment.In start-up course, external resistance is 2000 Ω, when external resistance both end voltage reaches 400 mV
More than, and when that can stablize two cycles of operation, it can calculate to start successfully.
When changing aqueous mode using continuous batch, exchange water cycle 48h utilizes 2700 data of Keithley when external resistance is 200 Ω
Acquisition system acquires external resistance both end voltage.Initial brine strength is 35 g/L, in a desalination period, voltage change
As shown in Fig. 2, brine strength is as shown in Figure 3 in its desalting chamber:
Continuous batch operation had not only can be used in the present invention, but also continuous flow operation can be used.Under continuous batch operating condition, work as dispatch from foreign news agency
When resistance both end voltage drops to certain numerical value, representing an exchange water cycle terminates.When in desalting chamber brine strength fall to it is lower
When numerical value, representing a desalination period terminates.The present invention passes through peristaltic pump, anode chamber, cathode chamber under continuous flow service condition
It is all made of the condition of lower end water inlet, upper end water outlet.
Claims (4)
1. a kind of device of tubular biological-cathode microbiological desalination fuel cell desalination, it is characterised in that: described device includes outer
Resistance (1), external circuit (2), anolyte water outlet (3), cathode and cathode biomembrane (4), catholyte (5), cation-exchange membrane
(6), desalting chamber (7), catholyte water inlet (8), catholyte water outlet (8a), cathode chamber top cover (9), anion-exchange membrane
(10), anode and anode biomembrane (11), anolyte (12), tubular shell of reactor (13), anolyte water inlet (14), aeration
Head (15), bracket (16), desalting chamber's water inlet (17), desalting chamber's water outlet (18)；
The reactor is sleeve-like configuration, and reactor bottom end is closed end, and top is open end, and reactor is reacted by tubular
The composition of housing made of inner sleeve made of device shell (13), cation-exchange membrane (6) and anion-exchange membrane (10), it is described interior
Set, housing and tubular shell of reactor (13) are successively set with from the inside to the outside, and inner sleeve and housing with tubular shell of reactor
(13) bottom surface is affixed, and tubular shell of reactor (13) is supported by bracket (16), and the space between inner sleeve and housing is desalination
Room (7), the desalting chamber (7) is interior to be added NaCl solution, and the concentration of NaCl solution is 5 ~ 35 g/L；The desalting chamber lower part is equipped with
Desalting chamber's water inlet (17), desalting chamber top are equipped with desalting chamber's water outlet (18)；Between housing and tubular shell of reactor (13)
Space be anode chamber, the space of inner sleeve is cathode chamber, cathode chamber top cover (9) are housed at the top of the cathode chamber, the cathode and
Cathode biomembrane (4) is arranged in cathode chamber, is full of catholyte (5) in cathode chamber, tubular shell of reactor (13) bottom is equipped with
The catholyte water inlet (8) communicated with cathode chamber, the cathode chamber top cover (9) are equipped with the catholyte water outlet communicated with cathode chamber
Mouth (8a), the aeration head (15) are mounted on tubular shell of reactor (13) bottom and communicate with cathode chamber, the anode and sun
Pole biomembrane (11) is arranged in anode chamber, full of anolyte (12) the anode chamber in, tubular shell of reactor (13) side wall it is upper
End and lower end are successively arranged the anolyte water outlet (3) and anolyte water inlet (14) communicated with anode chamber, cathode and anode point
Not Cai Yong titanium silk be connected with external circuit (2), external circuit (2) is connected using conducting wire.
2. a kind of device of tubular biological-cathode microbiological desalination fuel cell desalination according to claim 1, feature
Be: the resistance value when external resistance (1) starts is 500 ~ 2000 Ω, and the resistance value of operation phase is 10 ~ 200 Ω.
3. a kind of device of tubular biological-cathode microbiological desalination fuel cell desalination according to claim 1, feature
Be: the ingredient and proportion of the catholyte (5) are NaHCO32 g/L, KH2PO4 4.4 g/L, K2HPO4•3H2O 3.4 g/
L, NH4Cl 1 g/L, MgCl2•6H2O 0.1 g/L, CaCl2•2H20.1 g/L of O, 0.1 g/L of yeast extract and micro gold
Belong to 10 mL of solution；The ingredient and proportion of the microelement metallic solution are as follows: NiCl2·6H2O 0.024 g/L；Na2WO4·
2H2O 0.025 g/L；Na2MoO40.025 g/L；FeSO4·7H2O 0.1 g/L；CaCl2·2H2O 0.1 g/L；CoCl2·
6H2O 0.1 g/L；CuSO4·5H2O 0.01 g/L；KAl(SO4)2·12H2O 0.01 g/L；0.01 g/L of boric acid；Chlorination
0.13 g/L of zinc；0.5 g/L of manganese sulfate；2.0 g/L of nitrilotriacetic acid；3.0 g/L of magnesium sulfate；
The ingredient and proportion of the anolyte are as follows: sodium acetate 1.64 g/L, KH2PO44.4g/L、K2HPO4•3H2O3.4 g/L、
NH4Cl1g/L、MgCl2•6H2O 0.1g/L、CaCl2•2H2O0.1 g/L, yeast extract 0.1g/L and Trace Metal solution 10
mL；The ingredient and proportion of the Trace Metal solution are identical as the microelement metallic solution of catholyte (5).
4. a kind of realize tubular biological-cathode microbiological desalination fuel cell desalination using device described in claim 1,2 or 3
Method, it is characterised in that: specific step is as follows for the method:
Step 1: the anaerobic acclimation of anode microorganism: taking the secondary settling tank activated sludge 2L of municipal sewage plant, the activated sludge
MLSS is 5000mg/L, is added in the closed glass jar of 5L, and anolyte (12) 2L is added, using magnetic stirrer, into
Row anaerobic acclimation；Every 11h, 0.5h is precipitated, supernatant 2L is changed, rejoins new anolyte (12) 2L, need to tame altogether
72h；
Step 2: the starting of reactor: when starting reactor, anode is living using the activated sludge for taming completion in step 1
Property sludge additional amount be anode building volume 10%, the indoor anolyte of anode (12) is full of；Cathode uses aerobic activated sludge
Or sanitary sewage, the aerobic activated sludge additional amount are the 10% of cathode building volume, the sanitary sewage additional amount is
The 50% of cathode building volume, its interior complementary space of cathode chamber are full of with catholyte (5)；During reactor start-up, in desalting chamber (7)
For the salting liquid of 35 g/L；External resistance (1) is 2000 Ω, and when external resistance (1), both end voltage reaches 400 mV or more, that is, starts
Success；
Step 3: brine strength the desalination operation of reactor: is completed after reactor start-up success, in desalting chamber (7) from 5g/L ~ 35
The desalination of g/L is run, and external resistance (1) uses 1 ~ 200 Ω；When changing water using continuous batch, anolyte (12), catholyte (5) every
48h, replacement a batch；Salt when the conductivity of desalting chamber (7) interior salt water falls to 2 mS/cm or less, in replacement desalting chamber (7)
Solution represents a desalination period and completes；
Step 4: continuous flow operating condition: reactor uses the continuous flow method of operation, and anode chamber utilizes peristaltic pump, using lower end
Water inlet, water outlet are discharged by the way of nature overflow；Cathode chamber water inlet, water outlet are all made of peristaltic pump, and two peristaltic pumps are kept
Same revolving speed；Salting liquid still takes continuous batch to run in desalting chamber, when conductivity falls to 2 mS/cm or less, replaces desalting chamber
Interior salting liquid represents a desalination period and completes.
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