CN107459113A - A kind of radio flocculation water treatment facilities based on bi-polar electrochemical principle - Google Patents
A kind of radio flocculation water treatment facilities based on bi-polar electrochemical principle Download PDFInfo
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- CN107459113A CN107459113A CN201710847639.7A CN201710847639A CN107459113A CN 107459113 A CN107459113 A CN 107459113A CN 201710847639 A CN201710847639 A CN 201710847639A CN 107459113 A CN107459113 A CN 107459113A
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- 238000005189 flocculation Methods 0.000 title claims abstract description 34
- 230000016615 flocculation Effects 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 230000005684 electric field Effects 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 claims description 2
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- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000000746 purification Methods 0.000 abstract description 10
- 239000007772 electrode material Substances 0.000 abstract description 8
- 239000010865 sewage Substances 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 239000000084 colloidal system Substances 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 238000007667 floating Methods 0.000 abstract description 2
- 230000010287 polarization Effects 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 238000003487 electrochemical reaction Methods 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 22
- 238000005260 corrosion Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000002351 wastewater Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
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- 125000002015 acyclic group Chemical group 0.000 description 3
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- 238000005265 energy consumption Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
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- -1 colourity Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
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- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
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- 150000001450 anions Chemical class 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000005446 dissolved organic matter Substances 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
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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
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46152—Electrodes characterised by the shape or form
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46152—Electrodes characterised by the shape or form
- C02F2001/46171—Cylindrical or tubular shaped
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention discloses a kind of radio flocculation water treatment facilities based on bi-polar electrochemical principle, including electrolytic cell, power supply, main anode, main cathode, set up main anode, main cathode in electrolytic cell separately and be electrically connected with the power supply respectively, at least one bipolar electrode is provided between main anode and main cathode in electrolytic cell, the interarea or main shaft of bipolar electrode be not vertical with the electric field line direction in electrolytic cell.The present invention sets not vertical with the electric field line direction in electrolytic cell with the bipolar electrode and interarea or main shaft that external circuit is connected between main anode and main cathode, electrochemical reaction occurs under solution electric field polarization and produces high activity flocculant for bipolar electrode, the effect such as electric floating, redox occurs simultaneously, dissolubility and suspended pollutant and colloid in water is effectively converted and is removed, reach purification sewage purpose.The present invention have simple in construction, electrode change it is convenient, save that electrode material, purification efficiency are high, are not easily blocked, the characteristics of cost is low.
Description
Technical field
The invention belongs to technical field of water treatment equipment, and in particular to there is one kind simple in construction, electrode to change convenient, section
About electrode material, purification efficiency are high, are not easily blocked, the low radio flocculation water process based on bi-polar electrochemical principle of cost
Device.
Background technology
Bipolar electrode（BPE, bipolar electrode）Refer to the immersion not being connected with an external power anode and the moon
Conductor in interpolar electrolyte.Play a part of negative electrode close to the one side of the anode of driving electrodes, reduction reaction occurs, and it is close
The one side of driving electrodes negative electrode plays a part of anode, and oxidation reaction occurs, and both ends can occur to aoxidize simultaneously and reduction reaction, and one
Individual electrode can play a part of anode and negative electrode simultaneously.
Electric flocculation is a kind of to the less wastewater processing technology of secondary environmental pollution.Electric flocculation method handles waste water, typically not
Need to add chemical agent, equipment volume is small, and floor space is few, and simple to operate flexible, sludge quantity is few, and subsequent treatment is simple.Electricity
Flocculation can effectively remove the heavy metal in sewage, anion, colourity, organic matter, the suspended solid even noxious material such as arsenic.Closely
At home and abroad just progressively be applied to over year the processing of various industrial sewage such as plating, chemical industry, printing and dyeing, pharmacy, process hides, papermaking and
The fields such as water supply purification.The reaction principle of electric flocculation be using metals such as aluminium, iron as anode, in the presence of direct current, anode quilt
Corrosion, produce Al3+、Fe2+Deng metal ion, then a series of oxidizing process through hydrolysis, polymerization and ferrous iron, develop into various
Hydroxo complex, multinuclear hydroxo complex so that hydroxide, make the colloidal state impurity in waste water, suspended impurity coagulative precipitation and divide
From.Electric flocculation technique is applied at present：Electroplating wastewater, printing and dyeing and textile waste, wastewater from car washer, enterprises in pulp and paper industry waste water, Tu
Slaughterhouse waste water, food and drink waste water, petrochemical plant waste water, oil field waste, garbage leachate wastewater, agricultural effluent, sanitary sewage etc.
Field.Early 20th century, power industry is not very flourishing, and large-scale use chemical floc, development are more slow.With science and technology
Progressive and power industry development, electric flocculation cost of water treatment substantially reduce, and turn into the focus treatment technology of water process research again.
Typical electric flocculation reaction system is made up of two plate electrodes, and sacrificial anode and negative electrode are directly connected with wire
Connect, the generation of flocculant is controlled by control electric current, current flow through from space between two-plate.It is continuous with electric flocculation technique
Development, has a variety of configuration of electrodes to be studied, and electric flocculation reactor can be divided into acyclic type, double according to configuration of electrodes classification
Pole formula and combined type.In acyclic type connection, all anodes are connected with wire each other, likewise, all negative electrodes are also each other
Connected with wire, cause potential height to interlock, electric current always flows to adjacent negative electrode from anode, and can not possibly bypass several pieces of pole plates
Other negative electrodes are flowed to, every piece of pole plate shows a kind of electrical and adjacent electrode and shows as different electrical, this kind of electric flocculation devices
In the absence of the leakage problem of electric current.But in the corrosive environment of high intensity, the junction of wire and electrode has greatly corrosion
Stress, once corrosion can greatly increase junction resistance even open circuit, considerably increase actual motion maintenance difficulty and into
This.In the research of laboratory scale, this wire is often ignored with interelectrode contact corrosion phenomenon, thus is put in equipment
Can be than expected more complicated and more difficult operation in operation and attended operation during big application.In bipolar system connection, outermost
Two electrodes in face are directly connected with external power with wire, other electrodes be discretely placed in each other outmost two electrodes it
Between, the one side of the electrode face anode of no wire connection is polarized to cathodic region, otherwise just anticathode one side is polarized to sun
Polar region.Portion of electrical current can bypass several pieces of pole plates in bipolar system and combined type, direct from some pole plates close to positive source
Flow direction is close to some pole plates of power cathode, and in addition to the pole plate being connected with two poles, every piece of pole plate shows different electricity
Property, bipolar system and combined type cause the energy consumption of bipolar system and combined electrode of a relatively high all there is the phenomenon of current leakage.
At present, in being connected for bipolar system, outmost sacrificial anode remains unchanged by the way of being directly connected with power supply with wire, and
Electrode without wire connection be all using vertical placement and it is vertical with the electric field line in electrolytic cell by the way of, i.e., with outmost two
Place, this modes of emplacement causes the electrodes from corrosion of only directly just anticathode no wire connection anti-individual electrode runs parallel
Should, electrode material utilization is low, and therefore, bipolar system electric flocculation can not substitute pushing away for traditional electric flocculation water technology
Wide application.
In addition, either acyclic type connects in the prior art, or bipolar system connection, due to being generally acknowledged that in the unit interval
COD etc. clearance reduces with the increase of electrode spacing in pending water, therefore general pole plate spacing is 1~5cm.It is former
Because be it is following some：1st, increase pole plate spacing, cause Ion transfer lengthening distance, migration resistance increase, cause effectively to be electrolysed
Electric current reduces, and treatment effeciency reduces naturally.2nd, pole plate spacing is bigger, and voltage is higher, and power consumption is bigger.Therefore it is required that between pole plate
Away from the smaller the better, but too small pole plate spacing can cause solution that the circulation between pole plate is deteriorated, and flocculation agglomerate is easily in pole
Accumulated plugging between plate, this not only lowers effective electrolysis area of electrode, also easily cause short circuit.
The content of the invention
It is perishable the invention aims to solve wire present in traditional electro-flucculation process and electrode connection
Cause in difficult in maintenance and existing bipolar system electric flocculation low electrode material utilization, easy blocking, current leakage, purification efficiency
The problem of low, there is provided that a kind of simple in construction, electrode is changed is convenient, save electrode material, purification efficiency are high, be not easily blocked, into
This low radio flocculation water treatment facilities based on bi-polar electrochemical principle.
The object of the present invention is achieved like this：Including electrolytic cell, power supply, main anode, main cathode, divide in the electrolytic cell
Not She Zhi main anode, main cathode, the main anode, main cathode correspond to is electrically connected with the power supply respectively, in master in the electrolytic cell
Be provided with least one bipolar electrode between anode and main cathode, the interarea or main shaft of the bipolar electrode not with electrolytic cell
In electric field line direction it is vertical.
The present invention has the advantages that compared with prior art：
1st, the bipolar electrode for producing flocculant is completely eliminated using perishable bipolar electrode as consumption electrode in the present invention
Wire between power supply is connected, and bipolar electrode periodic replacement is convenient, easily operated.
2nd, bipolar electrode of the invention uses the geometry of similar H types, can save the electrode material use up to 40%
And cost.
3rd, bipolar electrode of the invention is placed by the way of not perpendicular or even parallel with electric field line direction, according to
Sewage disposal needs flexibly select the usage quantity and arrangement mode of bipolar electrode, can significantly improve flocculant yield and
The purification efficiency of sewage.
4th, main electrode of the invention uses the material of corrosion resistant and using bipolar electrode as consumption electrode, in the corrosion of high intensity
The wire and junction corrosion stress of main electrode is smaller and resistance variations are smaller in environment, main electrode with bipolar electrode without enter
The synchronous periodic replacement of row, system operation safeguard that simply cost substantially reduces.
5th, main electrode spacing of the invention is larger, is not easy the accumulated plugging between pole plate using caused flocculation agglomerate and makes
Into short circuit of polar, the problem of current leakage between main electrode causes energy consumption higher it also avoid.
Brief description of the drawings
Fig. 1 is principle schematic diagram of the present invention；
Fig. 2 is that the flocculant concentration of the present invention removes the correlation with additional driving voltage；
Fig. 3 is the flocculant turbidity removal of the present invention with the correlation of additional driving voltage；
Fig. 4 is flocculant concentration caused by the bipolar electrode difference placed angle of the present invention；
Fig. 5 is flocculant concentration caused by the bipolar electrode varying number of the present invention；
Fig. 6 is flocculant concentration caused by the irony bipolar electrode of the different geometries of the present invention；
Fig. 7 is the longitudinal arrangement schematic diagram of the bipolar electrode of the present invention；
Fig. 8 is the horizontal arrangement schematic diagram of the bipolar electrode of the present invention；
Fig. 9 is the various dimensions arrangement schematic diagram of the bipolar electrode of the present invention；
In figure：1- electrolytic cells, 2- power supplys, 3- main anodes, 4- main cathodes, 5- bipolar electrodes, 51- anode portions, 52- negative pole parts,
53 connecting portions, 6- treatment sewages, 7- wires.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is further illustrated, but the present invention is not subject in any way
Limitation, based on present invention teach that any changes and modifications made, belong to protection scope of the present invention.
As shown in Figure 1 to 9, the present invention includes electrolytic cell 1, power supply 2, main anode 3, main cathode 4, divides in the electrolytic cell 1
Not She Zhi main anode 3, main cathode 4, the main anode 3, main cathode 4 respectively correspond to is electrically connected with power supply 2, the electrolytic cell 1
At least one bipolar electrode 5, the interarea or main shaft of the bipolar electrode 5 are provided between inherent main anode 3 and main cathode 4
It is not vertical with the electric field line direction in electrolytic cell 1.
The interarea or main shaft of the bipolar electrode 5 are parallel with the electric field line direction in electrolytic cell 1.
5 rectangular body of bipolar electrode, cylinder, tubular, tabular or the approximate platy structure.
The cylinder, the main shaft of bipolar electrode 5 of tubular-shaped structures be not vertical with the electric field line direction in electrolytic cell 1.
The maximum face of the projected area of bipolar electrode 5 of the cuboid, tabular or approximate platy structure is interarea, described
Interarea is not vertical with the electric field line direction in electrolytic cell 1.
The interarea of bipolar electrode 5 of the tabular or approximate platy structure is rectangular, trapezoidal, T-shaped or H-shaped.
The H-shaped bipolar electrode 5 of the interarea includes anode portion 51, negative pole part 52, connecting portion 53, the anode portion
51st, negative pole part 52 is respectively arranged at both ends of the interarea of H-shaped bipolar electrode 5 along the electric field line direction in electrolytic cell 1 and passes through company
Socket part 53 connects.
The anode portion 51 and the area ratio of negative pole part 52 are 0.35：1~1:0.35.
Electric field line direction is provided with multiple longitudinal directions and/or horizontal stroke between main anode 3 and main cathode 4 in the electrolytic cell 1
To the bipolar electrode 5 of parallel arrangement.
The main anode 3 and/or main cathode 4 be graphite electrode, Ti electrode, boron-doped diamond electrode, stainless steel electrode or
Platinum electrode, the bipolar electrode 5 are the electrode that iron, aluminium, a kind of material in copper or arbitrary combination are formed.
Driving voltage between the main anode 3 and main cathode 4 is 3~10V.
The bipolar electrode 5 along the electric field line direction extension in electrolytic cell 1 and is in V perpendicular to the section in electric field line direction
Shape or inverted cone-shaped structure.
The interarea of the bipolar electrode 5 is provided with multiple vertical or inclined through hole.
The power supply 2 is the pulse power.
Operation principle and the course of work of the present invention：
The present invention sets the bipolar electrode not being connected with external circuit, bipolar electrode in electrolytic cell between main anode and main cathode
Interarea or main shaft it is not vertical with the electric field line direction in electrolytic cell, under solution electric field polarization electrochemistry occurs for bipolar electrode
React and produce high activity flocculant, while the effect such as electric floating, redox occurs, make dissolved organic matter and suspension in water
State pollutant and colloid are obtained effectively converting, removed, and reach purification sewage purpose.The main electrode of the present invention uses corrosion resistant material
Expect and using perishable bipolar electrode as consumption electrode, the junction of wire and main electrode is rotten in the corrosive environment of high intensity
Erosion stress is smaller and resistance variations are smaller, therefore main electrode with bipolar electrode without synchronize periodic replacement, system operation
Safeguard that simply cost substantially reduces.The present invention is completely eliminated for producing wadding using perishable bipolar electrode as consumption electrode
Wire connection between the bipolar electrode and power supply of solidifying agent, connects without wire and causes multiple bipolar electrodes are run simultaneously to turn into
May, can as desired by increase bipolar electrode quantity improve flocculant yield, and wireless connection cause it is bipolar
Property electrode change it is relatively simple.In addition, the interarea or main shaft of bipolar electrode be not vertical with the electric field line direction in electrolytic cell, make
Bipolar electrode extends between main electrode, bipolar electrode can as the conductor of Ion transfer between main electrode in electrolytic cell,
In the case that ion migration resistance is certain, the spacing of main anode and main cathode can be effectively increased, without causing effectively electrolysis electricity
Stream reduces and water treatment efficiency reduces, and the pole plate spacing of increase also avoids the need for increasing polar plate voltage, therefore power consumption is not yet
It can increase.The main anode of increase is advantageous to improve the circulation of fluid therebetween again with main cathode spacing, so that caused flocculation
Agglomerate is not easy the accumulated plugging between pole plate and makes short circuit of polar, would not also cause electrode to be effectively electrolysed the reduction of area.Secondly,
In the electrolytic cell of multiple main electrodes, because bipolar electrode is as Ion transfer is led between main anode and main cathode in electrolytic cell
Body, electric current always flows to adjacent main cathode by bipolar electrode from main anode, and can not possibly flow to it around several pieces of pole plates
Its negative electrode, occur the problem of so as to avoid current leakage from causing energy consumption higher.In addition, in compared with prior art with it is outmost
The bipolar electrode that two main electrodes are arranged in parallel in, the setting form of bipolar electrode of the invention are flocculated under similarity condition
Agent concentration is above the bipolar electrode structure being placed in parallel, therefore has more preferable purification efficiency under similarity condition.Moreover,
The present invention bipolar electrode using H-shaped structure when purification efficiency be basically unchanged in the case of, can effectively reduce electrode material
Material up to 40%, electrode cost is relatively low.
As shown in figure 1, bipolar electrode 5 connects the caused electric field in the solution of electrolytic cell 1 of power supply 2 by main electrode 3,4
Effect is lower to polarize, and turns into an equipotentiality body after reaching electrostatic equilibrium, current potential is formed between the surface of bipolar electrode 5 and solution
Difference, it is that negative shape forms anode portion 51 to be positive, led into negative pole part 52, the close side current potential of main cathode 4 close to the side current potential of main anode 3
Electrode corrosion reaction occurs for the potential difference driving crossed between the surface of bipolar electrode 5 and solution, produces flocculant, reaches and remove water
The purpose of middle turbidity.With the rise of additional driving voltage, when voltage is 5 V, electrode starts dissolving and produces flocculant, flocculation
Positive correlation is presented with turbidity change in the concentration of agent（Fig. 2, Fig. 3）.Bipolar electrode 5 is placed by different angles, when bipolar
Property electrode 5 placed along the direction parallel with electric field line caused by flocculant concentration highest（Fig. 4）；Flocculant concentration is with double
The increase of the quantity of polar electric pole 5 and increase（Fig. 5）.As shown in fig. 6, bipolar electrode 5 to be designed to different geometries, send out
Now except T-shaped bipolar electrode 5, the bipolar electrodes 5 of other geometries caused total concentration of iron under identical service condition
It is almost equal（50.81 ~ 53.37 mg/litres）.Total concentration of iron substantially reduces caused by T-shaped bipolar electrode 5, and this is due to the moon
The area in pole portion 52 is too small it is impossible to meet the electric charge transfer rate requirement of anode portion 51, thus the iron that result in anode portion 51 is molten
Go out rate reduction.This limitation can be offset when geometry of the bipolar electrode 5 using H types, or even when negative pole part 52
When the area ratio of area and anode portion 51 is less than 0.36, caused total concentration of iron remains unchanged no significant change, shows by excellent
Up to 40% electrode material cost can be saved by changing the geometry of bipolar electrode 5 in radio flocculation plant.And this hair
It is bright to allow the wireless work simultaneously of the bipolar electrode 5 of any amount and any dimension（Fig. 7, Fig. 8, Fig. 9）, it is entirely avoided it is existing
The problem of being caused in technology by electrode connection, it enormously simplify the operation of electric flocculation and improve the efficiency and stability of water process.
Claims (10)
1. a kind of radio flocculation water treatment facilities based on bi-polar electrochemical principle, including electrolytic cell（1）, power supply（2）, it is main
Anode（3）, main cathode（4）, the electrolytic cell（1）Main anode is inside set respectively（3）, main cathode（4）, the main anode（3）, it is main
Negative electrode（4）Corresponding and power supply respectively（2）It is electrically connected with, it is characterised in that the electrolytic cell（1）Inherent main anode（3）And main cathode
（4）Between be provided with least one bipolar electrode（5）, the bipolar electrode（5）Interarea or main shaft not with electrolytic cell（1）
In electric field line direction it is vertical.
2. the radio flocculation water treatment facilities based on bi-polar electrochemical principle according to claim 1, it is characterised in that
The bipolar electrode（5）Interarea or main shaft and electrolytic cell（1）In electric field line direction it is parallel.
3. the radio flocculation water treatment facilities according to claim 1 or claim 2 based on bi-polar electrochemical principle, its feature exist
In the bipolar electrode（5）Rectangular body, cylinder, tubular, tabular or approximate platy structure.
4. the radio flocculation water treatment facilities based on bi-polar electrochemical principle according to claim 3, it is characterised in that
The bipolar electrode of the cylinder, tubular-shaped structures（5）Main shaft not with electrolytic cell（1）In electric field line direction it is vertical.
5. the radio flocculation water treatment facilities based on bi-polar electrochemical principle according to claim 3, it is characterised in that
The bipolar electrode of the cuboid, tabular or approximate platy structure（5）The maximum face of projected area is interarea, and the interarea is not
With electrolytic cell（1）In electric field line direction it is vertical.
6. the radio flocculation water treatment facilities based on bi-polar electrochemical principle according to claim 5, it is characterised in that
The bipolar electrode of the tabular or approximate platy structure（5）Interarea is rectangular, trapezoidal, T-shaped or H-shaped.
7. the radio flocculation water treatment facilities based on bi-polar electrochemical principle according to claim 6, it is characterised in that
The H-shaped bipolar electrode of the interarea（5）Including anode portion（51）, negative pole part（52）, connecting portion（53）, the anode portion
（51）, negative pole part（52）It is respectively arranged at H-shaped bipolar electrode（5）Interarea is along electrolytic cell（1）In electric field line direction both ends
And pass through connecting portion（53）Connection.
8. the radio flocculation water treatment facilities based on bi-polar electrochemical principle according to claim 7, it is characterised in that
The anode portion（51）With negative pole part（52）Area ratio be 0.35：1~1:0.35.
9. the radio flocculation water treatment facilities according to claim 1 or claim 2 based on bi-polar electrochemical principle, its feature exist
In the electrolytic cell（1）Inherent main anode（3）And main cathode（4）Between electric field line direction is provided with multiple longitudinal directions and/or horizontal
To the bipolar electrode of parallel arrangement（5）.
10. the radio flocculation water treatment facilities according to claim 1 or claim 2 based on bi-polar electrochemical principle, its feature
It is the main anode（3）And/or main cathode（4）For graphite electrode, Ti electrode, boron-doped diamond electrode, stainless steel electrode or
Platinum electrode, the bipolar electrode（5）The electrode formed for a kind of material in iron, aluminium, copper or arbitrary combination.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973379A (en) * | 2017-12-15 | 2018-05-01 | 青岛理工大学 | Method suitable for in-situ remediation of arsenic pollution of anoxic underground water |
| CN110980891A (en) * | 2019-12-17 | 2020-04-10 | 昆明理工大学 | Tower type electric flocculation water treatment device |
| CN111302538A (en) * | 2019-11-21 | 2020-06-19 | 山东大学 | Reactor for generating hydroxyl radicals by bipolar electrode and application thereof |
| CN112662883A (en) * | 2020-12-30 | 2021-04-16 | 浙江大学 | Device and method for recycling heavy metals in electroplating sludge by using biological leaching coupling electrode electrodialysis technology |
| CN112830555A (en) * | 2021-01-05 | 2021-05-25 | 北京化工大学 | Double-potential anode electrolysis device and method |
| CN112978871A (en) * | 2021-02-25 | 2021-06-18 | 西安建筑科技大学 | Device based on electrooxidation coupling electrocoagulation handles rubbish leachate membrane concentrate |
| CN113461117A (en) * | 2021-07-08 | 2021-10-01 | 山东农业大学 | Method for treating heavy metal organic complex wastewater by electrochemical oxidation coupled with electric flocculation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973379A (en) * | 2017-12-15 | 2018-05-01 | 青岛理工大学 | Method suitable for in-situ remediation of arsenic pollution of anoxic underground water |
| CN111302538A (en) * | 2019-11-21 | 2020-06-19 | 山东大学 | Reactor for generating hydroxyl radicals by bipolar electrode and application thereof |
| CN110980891A (en) * | 2019-12-17 | 2020-04-10 | 昆明理工大学 | Tower type electric flocculation water treatment device |
| CN110980891B (en) * | 2019-12-17 | 2021-08-03 | 昆明理工大学 | Tower type electric flocculation water treatment device |
| CN112662883A (en) * | 2020-12-30 | 2021-04-16 | 浙江大学 | Device and method for recycling heavy metals in electroplating sludge by using biological leaching coupling electrode electrodialysis technology |
| CN112830555A (en) * | 2021-01-05 | 2021-05-25 | 北京化工大学 | Double-potential anode electrolysis device and method |
| CN112978871A (en) * | 2021-02-25 | 2021-06-18 | 西安建筑科技大学 | Device based on electrooxidation coupling electrocoagulation handles rubbish leachate membrane concentrate |
| CN113461117A (en) * | 2021-07-08 | 2021-10-01 | 山东农业大学 | Method for treating heavy metal organic complex wastewater by electrochemical oxidation coupled with electric flocculation |
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