CN110194508A - A kind of continous way electrocatalytic reaction system and its indirect adjusting method of electric current - Google Patents
A kind of continous way electrocatalytic reaction system and its indirect adjusting method of electric current Download PDFInfo
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- CN110194508A CN110194508A CN201910375909.8A CN201910375909A CN110194508A CN 110194508 A CN110194508 A CN 110194508A CN 201910375909 A CN201910375909 A CN 201910375909A CN 110194508 A CN110194508 A CN 110194508A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
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Abstract
The present invention discloses a kind of continous way electrocatalytic reaction system and its indirect adjusting method of electric current, including N number of concatenated electrolytic cell subelement；N is positive integer, N >=2；Electrolytic cell subelement includes electrolytic cell and power supply；Each electrolyte bath is provided with the anode and cathode being connected respectively with corresponding power, and electrolytic cell is equipped with inlet and outlet；The water outlet of upstream electrolytic cell and the water inlet of adjacent downstream electrolytic cell.The present invention passes through sequentially connected multistage electrolytic cell, the current density for controlling each electrolytic cell is equal to or slightly higher than its limiting current density, so that solution to be processed flows through in each electrolytic cell, its electrochemical oxidation process carries out under high current efficiency and low electrolysis energy consumption, realizes the efficient low-consume degradation of entire electrolytic process.
Description
Technical field
The invention belongs to electrochemicial oxidation organic matter technical fields, and in particular to a kind of multistage of current adjustment is continuous
Formula electrocatalytic reaction system and method.
Background technique
Industry Waste organic pollutants content is high and complicated components, toxicity are big, it is difficult to which biochemical degradation makes its processing difficulty
It is quite big.It has been difficult to meet the requirement of technology and economy using conventional physics, chemistry, bioremediation at present, thus has sought
Energy-efficient novel process technology is asked to become the task of top priority (XI AN JIAOTONG UNIVERSITY Subject Index, 2017,51 (3): 92-97).
Electrochemicial oxidation organic matter technology is a kind of typical high-level oxidation technology at present.The technology is utilized to have and be urged
The anode of change effect, generates the hydroxyl radical free radical or other oxidizing intermediates with Strong oxdiative ability, promotes oxidation operation,
Even it is decomposed into H2O and CO2.But the current maximum defect of the technology is that current efficiency is low and electrolysis energy consumption is high, grinding in recent years
Study carefully emphasis be also around improve its treatment effect and reduce processing energy consumption come carry out (China Environmental Science, 2018,38 (5):
1767-1773；Environmental project journal, 2016,10 (11): 6479-6485).
As an important parameter, the influence to current efficiency and energy consumption can not be ignored electric current.To the organic of various concentration
When object is degraded, there are a specific limiting current density value (jlim).According to the model of C.Comninellis et al., pole
Current density of rationing the power supply can be estimated from COD value:
jlim(t)=4FkmCOD(t)
In formula, jlimIt (t) is the limiting current density value of t moment in reaction, unit Am-2；F is Faraday constant,
Value is 96487Cmol-1；Km is mass tranfer coefficient, unit ms-1；COD (t) is the solution C OD value of t moment in reaction, single
Position is molm-3。
When actual current density is in jlimUnder when, indicate that number of electrons that electrochemical oxidation system provides cannot will be locating
The organic molecule complete oxidation or mineralising of reason, electrochemical process is in the Charge controlled stage, and (i.e. load transfer process is rate control
Step), current efficiency remains 100% at this time.When actual current density is in jlimOn when, indicate electrochemical oxidation system mention
Handled organic molecule complete oxidation or mineralising can be had at this time excess electron for pairs such as analysis oxygen by the number of electrons of confession
Reaction uses, and electrochemical process is in mass transport limitation stage (i.e. mass transport process is rate determining step), and current efficiency is low at this time
In 100%.
Based on the corresponding relationship between above-mentioned organic solution COD value and limiting current density, it is believed that if using constant current mould
Formula (or pulse constant current mode) is degraded, it is assumed that given current density value is just corresponding to the initial organic concentration of solution
Limiting current density value, then belonging to the stage of current efficiency very high (close to 100%) in the initial stage of reaction；Once
Reaction carries out a period of time, and solution C OD value can constantly be reduced with the progress of reaction, the electricity of the limit corresponding to solution C OD value
Current density value is gradually lower than initial current density values, and after being reacted into the mass transport limitation stage, current efficiency, which sharply declines, (to be lower than
100%), and the extraneoas loss (side reaction increase) of energy consumption is caused.For this purpose, being considered as electric current adjustment input pattern, (adjustment is defeated
Enter the current value of electro-catalysis system), to solve, current efficiency during organic matter electrocatalytic oxidation is low, power consumption values are high is asked
Topic.So-called current regulation input pattern is to be carried out based on direct current constant current mode or pulse constant current mode in degradation reaction
In the process, the limiting current density value that the moment is calculated according to input current~organic matter relational model, then according to calculated value
The input current value at (or lower a moment) this moment is adjusted, can so be effectively ensured electro-catalysis system in the process of running with high electricity
Efficiency operation is flowed, energy consumption is greatly saved.
There are two types of processing modes for electro-catalytic oxidation technology under electric current adjustment modes: intermittent and continous way.For interval
Formula electric catalysis reactor, ie in solution are then exhausted from reactor after handling predetermined extent wherein, and solution C OD value is in electro-catalysis
Variation range is larger in journey, thus may cause corresponding limiting current density variation range also very greatly, is adapted for use with electricity
Flow direct adjustment mechanism.Patent ZL201610955285.3 discloses the method for operation of the direct adjustment mechanism of electric current, i.e. input electricity
The input pattern that stream can constantly be adjusted according to related law.
Compared to intermittent electric catalysis reactor, solution is once to pass through in continous way electrocatalytic reaction system, and COD is not
It is also continuously replenished by newly inputting solution while the disconnected consumption by electro-catalysis process, therefore its whole solution C OD value amplitude of variation
It is more intermittent small, it is difficult to solution thoroughly be reacted, be not suitable for using the single direct adjustment mechanism of electric current, need to be selected new
Current adjustment mechanism.
Summary of the invention
The object of the present invention is to provide a kind of continous way electrocatalytic reaction system and its indirect adjusting method of electric current, with
Solve problems of the prior art.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of continous way electrocatalytic reaction system, including N number of concatenated electrolytic cell subelement；N is positive integer, N >=2；
Electrolytic cell subelement includes electrolytic cell and power supply；
Each electrolyte bath is provided with a pair of of anode and cathode, and a pair of of anode and cathode connection in each electrolytic cell is one corresponding
Power supply；Electrolytic cell is equipped with inlet and outlet；Each power supply being capable of independent control；The water outlet of upstream electrolytic cell with it is adjacent
The water inlet of downstream electrolytic cell.
Further, N number of electrolytic cell is vertically sequentially connected, and the electrolytic cell upper end is equipped with cover board, except the top is electrolysed
The cover plate central of remaining outer electrolytic cell upper end of the cover board of slot upper end is equipped with aperture, remaining electrolytic cell in addition to bottom electrolytic cell
Bottom is equipped with water outlet, the water outlet of top electrolytic cell by the aperture of lower section electrolytic cell upper end cover board and lower section electrolytic cell according to
Secondary connection, bottom bottom of electrolytic tank or side wall are equipped with discharge outlet.
Further, the cover board is respectively provided with the handle for anode and cathode in distance center same position and passes through
With with the through-hole of power supply being connected.
Further, the water inlet of the top electrolytic cell connects the first water inlet, and first water inlet is provided with water
Pump.
Further, it is provided with manual control in the inlet and outlet of electrolytic cell or control device automatically controls
Valve.
Further, N number of electrolytic cell is laterally successively contacted.
Further, the power supply is low-voltage DC voltage-stabilizing power supply or action of low-voltage pulse power supply.
Further, the anode is carbon electrode, boron-doped diamond electrode, noble metal electrode or titanium matrix metal oxide
Electrode, the cathode are conductive material.
Further, electrolytic cell is made of organic glass.
Further, it is close that the current density inputted in the electrolytic cell of upstream is greater than the electric current inputted in adjacent downstream electrolytic cell
Degree.
The indirect adjusting method of electric current of continous way electrocatalytic reaction system, comprising: pending water is from upstream successively continuous flow
It crosses N number of electrolytic cell and carries out continuous electrolysis reaction；The input current density value of electrode is less than in the electrolytic cell of upstream in the electrolytic cell of downstream
The input current density value of electrode；The current density value inputted in each electrolytic cell is equal to or more than limiting current density value；Institute
State limiting current density value jlimIt is calculated and is obtained by the COD value of pending water in corresponding electrolytic cell:
jlim(t)=4FkmCOD(t)
In formula, jlimIt (t) is the limiting current density value of t moment in reaction, unit Am-2；F is Faraday constant,
Value is 96487Cmol-1；kmFor mass tranfer coefficient, unit ms-1；COD (t) is the COD value of the processing water of t moment in reaction,
Unit is molm-3。
Since the solution C OD value in every level-one electrolytic cell will be lower than previous stage, so that its input current can be lower than previous stage,
It causes the current value of continous way electrocatalytic reaction system apparently reducing step by step therefrom, reaches a kind of indirectly to system electric current
The effect being adjusted.
Compared with the existing technology, the invention has the following advantages: by continous way electrocatalytic reaction system, Ge Ge electricity
The current density that source controls each electrolytic cell successively reduces, so that solution to be processed is in degradation process continuously across each electrolysis
In slot, electrochemical oxidation process carries out under different current densities, and electric current should be equal to or slightly higher than it instantly corresponding to state
Carrying current value, not only can guarantee higher current efficiency, but also can preferably control energy consumption and be maintained at a relatively reasonable model
It encloses.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the indirect adjustment mechanism schematic diagram of electric current of continous way electric catalysis reactor device.
Fig. 2 is the structural schematic diagram of vertical formula multistage continuous electrolysis reactor assembly.
Wherein: 1, the first power supply, 2, second source, 3, third power supply, the 4, the 4th power supply, the 5, the 5th power supply, the 6, first electricity
Solution slot, the 7, second electrolytic cell, 8, third electrolytic cell, the 9, the 4th electrolytic cell, the 10, the 5th electrolytic cell, the 11, first cover board, 12, second
Cover board, 13, third cover board, the 14, the 4th cover board, the 15, the 5th cover board, 16, the first anode, 17, second plate, 18, third anode,
19, the 4th anode, the 20, the 5th anode, the 21, first cathode, the 22, second cathode, 23, third cathode, the 24, the 4th cathode, 25,
Five cathodes, the 26, first water outlet, the 27, second water outlet, 28, third water outlet, the 29, the 4th water outlet, the 30, first water inlet,
31, water pump, 32, discharge outlet, the 33, second water inlet, 34, water inlet valve, the 35, first outlet valve, the 36, second water outlet
Valve, 37, third outlet valve, the 38, the 4th outlet valve.
Fig. 3 is the structural schematic diagram of transverse type multistage continuous electrolysis reactor assembly.
Wherein: 1, the first power supply, 2, second source, 3, third power supply, the 4, the 4th power supply, the 5, the 5th power supply, the 6, first electricity
Solution slot, the 7, second electrolytic cell, 8, third electrolytic cell, the 9, the 4th electrolytic cell, the 10, the 5th electrolytic cell, 16, the first anode, 17, second
Anode, 18, third anode, the 19, the 4th anode, the 20, the 5th anode, the 21, first cathode, the 22, second cathode, 23, third cathode,
24, the 4th cathode, the 25, the 5th cathode, 32, discharge outlet, the 33, second water inlet.
Specific embodiment
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted
Under condition, the features in the embodiments and the embodiments of the present application be can be combined with each other.
Following detailed description is exemplary explanation, it is intended to provide further be described in detail to the present invention.Unless another
It indicates, all technical terms of the present invention contain with the normally understood of the application one of ordinary skill in the art
Justice is identical.Term used in the present invention is merely to describe specific embodiment, and be not intended to limit according to the present invention
Illustrative embodiments.
Embodiment one:
Referring to shown in attached drawing 2, the present invention provides a kind of vertical continous way electrocatalytic reaction system, including power supply and electrolysis
Slot.The upper end of first electrolytic cell 6 is equipped with the first cover board 11, and the inside of the first electrolytic cell 6 is equipped with the first anode 16 and the first cathode
21, the first cover board 11 is respectively equipped with an aperture, the handle of the first anode 16 and the first cathode 21 in distance center same position
It is connected respectively by aperture with the positive and negative anodes of the first power supply 1, the bottom of the first electrolytic cell 6 is equipped with the first water outlet 26, and first goes out
The mouth of a river 26 is equipped with the first outlet valve 35, and the first water inlet 30 is connect with the first electrolytic cell 6, is arranged at the first water inlet 30
There is a water pump 31, the outlet of water pump 31 is connected to the first electrolytic cell 6 by the second water inlet 33, and being equipped at the second water inlet 33 can be through
The valve automatically controlled by manual control or control device, i.e. the first water inlet valve 34；
The upper end of second electrolytic cell 7 is equipped with the second cover board 12, and the inside of the second electrolytic cell 7 is equipped with second plate 17 and second
Cathode 22,12 center of the second cover board are equipped with aperture, and the first water outlet 26 of 6 bottom of the first electrolytic cell setting passes through the aperture and the
The connection of two electrolytic cells 7, is being respectively equipped with an aperture, second plate 17 and the second cathode away from 12 center same position of the second cover board
22 handle passes through aperture respectively and is connected with the positive and negative anodes of second source 2, and the bottom of the second electrolytic cell 7 is equipped with the second water outlet
27, the second water outlet 27 is equipped with the second outlet valve 36；
The upper end of third electrolytic cell 8 is equipped with third cover board 13, and the inside of third electrolytic cell 8 is equipped with third anode 18 and third
Cathode 23,13 center of third cover board are equipped with aperture, and the second water outlet 27 is connect by the aperture with third electrolytic cell 8, away from the
Three cover boards, 13 center same position is respectively equipped with an aperture, and the handle of third anode 18 and third cathode 23 passes through aperture respectively
It is connected with the positive and negative anodes of third power supply 3, the bottom of third electrolytic cell 8 is equipped with third water outlet 28, and third water outlet 28 is equipped with
Third outlet valve 37；
The upper end of 4th electrolytic cell 9 is equipped with the 4th cover board 14, and the inside of the 4th electrolytic cell 9 is equipped with the 4th anode 19 and the 4th
Cathode 24,14 center of the 4th cover board are equipped with aperture, and third water outlet 28 is connect by the aperture with the 4th electrolytic cell 9, away from the
Four cover boards, 14 center same position is respectively equipped with an aperture, and the handle of the 4th anode 19 and the 4th cathode 24 passes through aperture respectively
It is connected with the positive and negative anodes of the 4th power supply 4, the bottom of the 4th electrolytic cell 9 is equipped with the 4th water outlet 29, and the 4th water outlet is equipped with the
Four outlet valves 38；
The upper end of 5th electrolytic cell 10 is equipped with the 5th cover board 15, and the inside of the 5th electrolytic cell 10 is equipped with the 5th anode 20 and the
Five cathodes 25,15 center of the 5th cover board are equipped with aperture, and the 4th water outlet 29 is connect by the aperture with the 5th electrolytic cell 10, away from
5th cover board, 15 center same position is respectively equipped with an aperture, and the handle of the 5th anode 20 and the 5th cathode 25 passes through small respectively
The positive and negative anodes of five power supply 5 of Kong Yu are connected, and the side wall of the 5th electrolytic cell is equipped with discharge outlet 32.
The course of work of vertical formula multistage continuous electrolysis reactor assembly is as follows: opening water inlet valve 34, pending water
Enter in the first electrolytic cell 6 from the first water inlet 30 by water pump 31.
The first power supply 1 is opened, a stable DC stream is added between the first anode 16 and the first cathode 21, and (this electric current is answered
Higher than carrying current value corresponding to its instantly state), the DC current values of input are with the corresponding carrying current value of solution C OD
Variation and change, but consistently equal to or slightly above carrying current value；After device runs a period of time, in the first electrolytic cell 6
Partial digestion occurs for aqueous solution.The first outlet valve 35 is then turned on, the aqueous solution in the first electrolytic cell 6 is by the first water outlet
Mouth 26 enters in the second electrolytic cell 7.After aqueous solution emptying in first electrolytic cell 6, new aqueous solution is injected.
Second source power supply 2 is opened, (this electric current should be exported one stable DC stream of input lower than the first power supply 1
Stabling current), the DC current values of input changes as the corresponding carrying current value of solution C OD changes, but consistently equal to or
Slightly above carrying current value；After device runs a period of time, the second outlet valve 36, the water in the second electrolytic cell 7 are opened
Solution enters in third electrolytic cell 8 by the second water outlet 27.After aqueous solution emptying in second electrolytic cell 7, injection new first
Treated the aqueous solution of electrolytic cell 6.
Third power supply 3 is opened, (this electric current should be lower than the stabilization that second source 2 is exported for one stable DC stream of input
Electric current), the DC current values of input change as the corresponding carrying current value of solution C OD changes, but consistently equal to or slightly higher
In carrying current value；After device runs a period of time, third outlet valve 37, the aqueous solution in third electrolytic cell 8 are opened
Enter in the 4th electrolytic cell 9 by third water outlet 28.After aqueous solution emptying in third electrolytic cell 8, new second electrolysis is injected
Treated the aqueous solution of slot 7.
The 4th power supply 4 is opened, (this electric current should be lower than the stabilization that third power supply 3 is exported for one stable DC stream of input
Electric current), the DC current values of input change as the corresponding carrying current value of solution C OD changes, but consistently equal to or slightly higher
In carrying current value；After device runs a period of time, the 4th outlet valve 38, the aqueous solution in the 4th electrolytic cell 9 are opened
Enter in the 5th electrolytic cell 10 by the 4th water outlet 29.After aqueous solution emptying in 4th electrolytic cell 9, new third electrolysis is injected
Treated the aqueous solution of slot 8.
The 5th power supply 5 is opened, (this electric current should be lower than the stabilization that the 4th power supply 4 is exported for one stable DC stream of input
Electric current), the DC current values of input change as the corresponding carrying current value of solution C OD changes, but consistently equal to or slightly higher
In carrying current value；After device runs a period of time, the aqueous solution in the 5th electrolytic cell 10 is discharged from discharge outlet 32.Hereafter, institute
Having valve, (water inlet valve 34, the first outlet valve 35, the second outlet valve 36, third outlet valve the 37, the 4th go out
Mouth of a river valve 38) it is fully open, five power supplys work at the same time, so that solution to be processed is in degradation process continuously across each electricity
It solves in slot, electrochemical oxidation process carries out under different current densities, realizes in entire electrolytic process under different current densities
Multistage electrolysis.
Embodiment two:
Referring to shown in attached drawing 3, the present invention provides a kind of transverse type multistage continuous electrolysis reaction unit, including power supply and electrolysis
Slot.The first anode 16 built in first electrolytic cell 6 and the first cathode 21, the first anode 16 and the first cathode 21 respectively with the first power supply
1 positive and negative anodes are connected；Second plate 17 built in second electrolytic cell 7 and the second cathode 22, second plate 17 and the second cathode 22 divide
It is not connected with the positive and negative anodes of second source 2；Third anode 18 built in third electrolytic cell 8 and third cathode 23,18 He of third anode
Third cathode 23 is connected with the positive and negative anodes of third power supply 3 respectively；4th anode 19 and the 4th cathode 24 built in 4th electrolytic cell 9,
4th anode 19 and the 4th cathode 24 are connected with the positive and negative anodes of the 4th power supply 4 respectively；5th anode 20 built in 5th electrolytic cell 10
With the 5th cathode 25, the 5th anode 20 and the 5th cathode 25 are connected with the positive and negative anodes of the 5th power supply 5 respectively.First electrolytic cell 6
Sidewall bottom is provided with the second water inlet 33, and cell sidewall top in upstream passes through pipeline successively with downstream cell sidewall bottom
Connection, the top side wall of the 5th electrolytic cell are provided with discharge outlet 32.
The course of work of transverse type multistage continuous electrolysis reactor assembly is as follows: pending water is from the bottom of the first electrolytic cell 6
Portion enters reactor assembly, and followed by second, third, fourth, fifth electrolytic cell, and finally leaves reaction from water outlet 27
Device device.The first, second, third, fourth, the 5th power supply is opened, the current value that every power supply is exported is according to state instantly
Corresponding carrying current value is set.Setting mode has 2 kinds, and one kind can directly select corresponding carrying current value as defeated
Current value out, another can choose carrying current value+over current value as output current value.Five power supplys work at the same time,
So that solution to be processed in degradation process continuously across in each electrolytic cell, electrochemical oxidation process is in different current densities
The multistage electrolysis in entire electrolytic process under different current densities is realized in lower progress.
In actual application, if run fully according to system limiting current density, guaranteeing high current efficiency
While with low energy consumption, the practical degradation efficiency of organic matter will certainly be made to become very low, that is, the longer time is needed to reach
Required organic cod removal rate, loses Technical Economy therefrom.For this purpose, the invention patent proposes " overcurrent " concept, i.e.,
On the basis of original input system electric current, increase a current value, as shown in following formula (1).
IInput=IThe limit+ΔI (1)
In formula (1), IInputCurrent value, I are actually entered for every grade of electrolytic moduleThe limitFor according to limiting current density measuring and calculating side
The carrying current value that formula obtains, Δ I are overcurrent, and above-mentioned physical quantity unit is A.It, can be appropriate sacrificial after introducing overcurrent
On the basis of domestic animal current utilization efficiency and degradation energy consumption, the practical degradation rate of organic matter is improved.
In the present invention, input current value in every grade of electrolytic cell can be calculated according to the carrying current formula of lower section:
jlim(t)=4F km COD(t)
jlimIt (t) is the limiting current density value of t moment in reaction, unit Am-2；F is Faraday constant, and value is
96487C·mol-1；kmFor mass tranfer coefficient, unit ms-1；COD (t) is the solution C OD value of t moment in reaction, and unit is
mol·m-3。
Since the reaction is electrolytic oxidation reaction, it is contemplated that safety factor, therefore the electrolytic cell should be non-conductive material
Matter, preferably high rigidity organic glass.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. a kind of continous way electrocatalytic reaction system, it is characterised in that: including N number of concatenated electrolytic cell subelement；N is positive whole
Number, N >=2；
Electrolytic cell subelement includes electrolytic cell and power supply；
Each electrolyte bath is provided with a pair of of anode and cathode, and a pair of of anode and cathode in each electrolytic cell connects a corresponding electricity
Source；Electrolytic cell is equipped with inlet and outlet；Each power supply being capable of independent control；
The water outlet of upstream electrolytic cell and the water inlet of adjacent downstream electrolytic cell.
2. continous way electrocatalytic reaction system according to claim 1, it is characterised in that: N number of electrolytic cell vertically successively connects
It connects, the electrolytic cell upper end is equipped with cover board, in addition to the cover board of the top electrolytic cell upper end in the cover board of remaining electrolytic cell upper end
The heart is equipped with aperture, remaining bottom of electrolytic tank in addition to bottom electrolytic cell is equipped with water outlet, the water outlet of top electrolytic cell
It is sequentially connected by the aperture of lower section electrolytic cell upper end cover board with lower section electrolytic cell, bottom bottom of electrolytic tank or side wall are equipped with
Discharge outlet.
3. continous way electrocatalytic reaction system according to claim 2, it is characterised in that: the cover board is in distance center phase
With position be respectively provided with the handle for anode and cathode by with the through-hole of power supply being connected.
4. continous way electrocatalytic reaction system according to claim 2, it is characterised in that: the water inlet of the top electrolytic cell
The first water inlet is connected, first water inlet is provided with water pump.
5. according to claim 2 state continous way electrocatalytic reaction system, it is characterised in that: the water inlet of electrolytic cell and water outlet
The valve of manual control or control device automatic control is provided on mouth.
6. continous way electrocatalytic reaction system according to claim 1, it is characterised in that: N number of electrolytic cell is laterally successively gone here and there
Even.
7. continous way electrocatalytic reaction system according to claim 1, it is characterised in that: the power supply is that low-voltage direct is steady
Voltage source or action of low-voltage pulse power supply.
8. continous way electrocatalytic reaction system according to claim 1, it is characterised in that: the anode is carbon electrode, mixes
Boron diamond electrode, noble metal electrode or titanium matrix metal oxide electrode, the cathode are conductive material.
9. continous way electrocatalytic reaction system according to claim 1, it is characterised in that: the electricity inputted in the electrolytic cell of upstream
Current density is greater than the current density inputted in adjacent downstream electrolytic cell.
10. the indirect adjusting method of electric current of continous way electrocatalytic reaction system described in any item of the claim 1 to 8, special
Sign is, comprising: pending water successively continues to flow through N number of electrolytic cell from upstream and carries out continuous electrolysis reaction；
The input current density value of electrode is less than the input current density value of electrode in the electrolytic cell of upstream in the electrolytic cell of downstream；Each
The current density value inputted in electrolytic cell is equal to or more than its limiting current density value；The limiting current density value jlimBy right
It answers the COD value of pending water in electrolytic cell to calculate to obtain:
jlim(t)=4FkmCOD(t)
In formula, jlimIt (t) is the limiting current density value of t moment in reaction, unit Am-2；F is Faraday constant, and value is
96487C·mol-1；kmFor mass tranfer coefficient, unit ms-1；COD (t) is the COD value of the processing water of t moment in reaction, unit
For molm-3。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937665A (en) * | 2019-12-09 | 2020-03-31 | 广州新奥环境技术有限公司 | Treatment device for degrading ammonia nitrogen in sewage |
| CN112430823A (en) * | 2020-11-03 | 2021-03-02 | 浙江诺亚氟化工有限公司 | Progressive gradual electrofluorination device and process |
| CN113087092A (en) * | 2021-04-12 | 2021-07-09 | 浙江树人学院（浙江树人大学） | Electric oxidation treatment method for wastewater based on current density gradient control |
| CN115180692A (en) * | 2022-08-26 | 2022-10-14 | 山东东楷环保工程有限公司 | Layered differential potential catalytic oxidation industrial wastewater treatment method |
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2019
- 2019-05-07 CN CN201910375909.8A patent/CN110194508A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110937665A (en) * | 2019-12-09 | 2020-03-31 | 广州新奥环境技术有限公司 | Treatment device for degrading ammonia nitrogen in sewage |
| CN112430823A (en) * | 2020-11-03 | 2021-03-02 | 浙江诺亚氟化工有限公司 | Progressive gradual electrofluorination device and process |
| CN112430823B (en) * | 2020-11-03 | 2021-11-02 | 浙江诺亚氟化工有限公司 | Progressive gradual electrofluorination device and process |
| CN113087092A (en) * | 2021-04-12 | 2021-07-09 | 浙江树人学院（浙江树人大学） | Electric oxidation treatment method for wastewater based on current density gradient control |
| CN115180692A (en) * | 2022-08-26 | 2022-10-14 | 山东东楷环保工程有限公司 | Layered differential potential catalytic oxidation industrial wastewater treatment method |
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