CN105883981A - Optical/electrical-Fenton sewage treatment device based on boron-doped diamond film electrode - Google Patents
Optical/electrical-Fenton sewage treatment device based on boron-doped diamond film electrode Download PDFInfo
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- CN105883981A CN105883981A CN201610228722.1A CN201610228722A CN105883981A CN 105883981 A CN105883981 A CN 105883981A CN 201610228722 A CN201610228722 A CN 201610228722A CN 105883981 A CN105883981 A CN 105883981A
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- sewage
- darkroom
- container
- fenton
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- 239000010865 sewage Substances 0.000 title claims abstract description 84
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 32
- 239000010432 diamond Substances 0.000 title claims abstract description 32
- 230000003287 optical effect Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000006731 degradation reaction Methods 0.000 claims abstract description 12
- 238000005057 refrigeration Methods 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 238000003760 magnetic stirring Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 15
- 230000033228 biological regulation Effects 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 6
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000005660 chlorination reaction Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 230000015556 catabolic process Effects 0.000 abstract description 9
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 7
- 229910001448 ferrous ion Inorganic materials 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000003487 electrochemical reaction Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 22
- -1 Hydroxyl radical free radical Chemical class 0.000 description 12
- 238000006056 electrooxidation reaction Methods 0.000 description 6
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 5
- 229960000907 methylthioninium chloride Drugs 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000012028 Fenton's reagent Substances 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007540 photo-reduction reaction Methods 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—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
- C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- 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
- C02F2201/4612—Controlling or monitoring
-
- 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
- C02F2201/46155—Heating or cooling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
An optical/electrical-Fenton sewage treatment device based on a boron-doped diamond film electrode comprises a dark chamber, a refrigeration device, a light source adjuster and an electrolytic cell direct current power supply, wherein the refrigeration device is used for adjusting the inside temperature of the dark chamber, and the electrolytic cell direct current power supply adjusts direct-current voltage and current on the electrode; a magnetic stirrer heats sewage in a stirring container, and a light source of a light emitting device irradiates to-be-treated sewage in the container. The optical/electrical-Fenton sewage treatment device has the advantages as follows: the device takes the boron-doped diamond film electrode as a positive electrode to realize an electrochemical reaction of a Fenton solution, the boron-doped diamond film electrode has high oxygen evolution potential and has high oxidizability for organic matters, and the synergistic effect of light degradation and ferrous ion circulation can be realized under the action of an ultraviolet source. According to the method, the boron-doped diamond film electrode is sufficiently combined with a Fenton reaction, and degradation of the sewage is effectively improved.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of light based on boron-doped diamond film electrode/
Electricity-fenton sewage processing means.
Technical background
Modern society produces and in life process along with the generation of large amount of sewage, if these sewage do not obtain
Rationally effective process, be then easy to brokenly healthy to the mankind of ring ecological environment, even serious threat.This
The traditional processing method of class sewage mainly has: physics sedimentation absorption method, chemical extraction partition method, chemical oxidization method
Deng, these methods all have significant limitation, consume substantial amounts of chemical drugs in sewage disposal process, behaviour
Make process more complicated, spend higher.
In acid condition, ferrous ion and hydrogen peroxide in the Fenton reagent generated, there is strong oxidizing property
Hydroxyl radical free radical, the Organic substance in sewage of can degrading.Ferrous ion urging as hydrogen peroxide in Fenton reagent
Agent, generates hydroxyl radical free radical under catalytic action, and hydroxyl radical free radical generates organic freedom with hardly degraded organic substance
Base is allowed to structural deterioration, final oxidation Decomposition.The oxidizing potential of hydroxyl radical free radical almost can reach 3V, right
Major part Organic substance has oxidative decomposition capacity.Meanwhile, ferrous ion is oxidized to ferric ion and produces
Coagulating sedimentation, can condense Organic substance and remove.
Tradition Fenton process needs to be firstly added a large amount of ferrous ion and hydrogen peroxide, and hydrogen peroxide is the most in the reaction
It is decomposed into oxygen and water, along with the continuation of reaction, depends on the generation speed of hydroxyl radical free radical of hydrogen peroxide gradually
Decline, and then sewage degradation efficiency is declined the most therewith.
In recent years, the method Application comparison that electrochemical method processes organic sewage is extensive, and sewage is injected into electrolysis
In groove, under DC source effect, there is chemical oxidation also on electrode or in solution in the Organic substance in sewage
Former, decompose or change into some innocuous substances.Common electro-fenton process can utilize the dissolved oxygen in sewage at electrode table
Face occurs reduction reaction to produce hydrogen peroxide, but efficiency comparison is low, is unable to reach purpose in actual application.As
Fruit uses light electro-Fenton reaction, and the reaction that can be correspondingly improved electricity Fenton by the catalytic action of visible ray is imitated
Rate, but the content of the hydrogen peroxide only produced by dissolved oxygen in sewage is the lowest.
In fenton sewage system for handling, the light wave of specific wavelength can effectively facilitate the photolysis and three of hydrogen peroxide
The photoreduction of valency iron ion, iron ion and hydrogen peroxide, under ultraviolet light irradiates, can accelerate organic pollution
Degraded, simultaneously under ultraviolet light irradiates, Fenton method combines the means such as impressed current and can remarkably promote organic contamination
The degraded of thing, has faster response speed to activating hydrogen peroxide or anakmetomeres oxygen, is suitable for high concentration poisonous
The process of organic pollution.
Diamond film has the excellent properties such as superhard wear, high heat conduction, high chemical stability.Diamond after boron-doping
The oxygen evolution potential of membrane electrode and electrocatalysis characteristic can be significantly improved, and have good electric conductivity and partly lead
Volume property.Updating and developing along with diamond technology of preparing and doping techniques, boron-doped diamond film is
Success realizes deposition on the matrixes such as various metals (such as Ti, Ta, Mo, W), Si, graphite, becomes New Type of Carbon
Element electrode material.Compared with conventional electrode materials, boron-doped diamond film electrode has wide electrochemical potential window, the low back of the body
Scape electric current, good electrochemical stability, corrosion resistance and surface are difficult to advantages such as being contaminated, and normal at room temperature
Pressure can be directly by mineralization of organic material by advanced electrochemical oxidation process.
Summary of the invention
It is an object of the invention to for above-mentioned existing problems, it is provided that a kind of light based on boron-doped diamond film electrode/
Electricity-fenton sewage processing means, Fenton technology is fully combined by this device with electrochemical oxidation technology, is dropped by light
Solution technology, electrically-degradable technology, Fenton technology and electrochemical oxidation technology combine, and form optical electrical-Fenton fall
Solution means, effective raising sewage degradation treatment efficiency.
Technical scheme:
A kind of optical electrical based on boron-doped diamond film electrode-fenton sewage processing means, sets including darkroom, refrigeration
Standby, light source actuator and electrolyzer DC source；
Darkroom has a good seal, all by the wire of cavity wall with the contact point of cavity wall at need through
Encapsulation process, is provided with openable hermatic door in the middle part of the side in darkroom；
Being provided with electrolytic cell device, magnetic stirring apparatus, light source and heat exchanger in darkroom, electrolytic cell device includes electrode
Folder, anode, negative electrode and container, negative electrode is platinum plate electrode, and anode is at tantalio sheet by HF CVD equipment
The Boron-doped diamond of upper growth, anode and cathode spacing are 3-5cm；
Container is used for holding sewage, puts into iron chloride and prepare Fenton-like system in sewage, and one end of electrode holder is with dark
Room sidewall is fixed, and the other end is fixed with the anode and negative electrode be arrangeding in parallel and makes it vertically be soaked in sewage,
And by electrode holder regulation anode and the height of negative electrode and spacing and replacement, anode and negative electrode are straight with electrolyzer respectively
Stream power supply connects；
Magnetic stirring apparatus is positioned at the bottom in darkroom, and container is positioned on magnetic stirring apparatus, and magnet rotor is placed in container,
Magnetic stirring apparatus is connected with the own power source being positioned at outside darkroom by wire；
Light source is positioned at the side in darkroom so that the ultraviolet light of light source output is fully irradiated on the solution of container,
Light source is connected with the light source actuator with own power source being positioned at outside darkroom by wire；
Heat exchanger is positioned at the top of side, darkroom, and heat exchanger is electric with self be positioned at outside darkroom by wire
The refrigeration plant in source connects.
A kind of using method of described optical electrical based on boron-doped diamond film electrode-fenton sewage processing means, step
Rapid as follows:
1) sewage is contained in container, in sewage, put into iron chloride prepare Fenton-like system and make chlorination in sewage
Concentration of iron is 0.3mM/L, the pH of sewage is 3-4；
2) container is placed on the magnetic stirring apparatus in darkroom, opens magnetic stirring apparatus, rotary speed according to
In how much sewage regulates and avoid container, sewage degradation reaction only occurs in surrounding them；
3) regulation electrode holder, makes electrode be sufficiently submerged in the pending liquid of sewage, opens electrolyzer DC source,
Regulation output electric current, making by the electric current density of electrode is 10-30mA/c, forms effective electricity Fenton body
System；
4) closing dark-room door, open light source power, the luminous power utilizing light source actuator to regulate light source is
360W, the wavelength of light is 365nm；
5) regulation heat exchanger, making the temperature in darkroom is 25 DEG C；
6) the pending liquid of sewage is degraded at least 120min in container, and the phenomenon intuitively observed is sewage color
Shoal, accurately measure sewage disposal degree and need to take out 2-3mL sample in container and carry out chemical oxygen demand measurement
Fixed；
7) after reaching sewage discharge requirement, shutdown, shutdown need to close light source power, electrolyzer DC source,
Heat exchanger, refrigeration plant power supply, open hermatic door, closes magnetic stirring apparatus power supply；
8) regulation electrode holder height, takes out container, and precipitate in the sewage after filtration treatment, it is qualified to obtain
Sewage disposal solution.
The working mechanism of the present invention:
1) sewage-treatment plant that the present invention provides, light source, electrolyzer power supply, chilling unit power supply and magnetic force
Agitator has independent current source, can work alone, it is also possible to jointly act on；Can effectively control in darkroom
Temperature and container in the mixability for the treatment of sewage, it is possible to require to control electrolyzer power supply according to condition
Output valve, it is possible to control luminous power and the emission wavelength of darkroom inner light source；According to the design feature of electrode holder,
Electrode can be taken off replacing.
2) boron-doped diamond film electrode that the present invention uses is in electrochemical oxidation process, produces and has Strong oxdiative
The intermediate product hydroxyl radical free radical of property and hydrogen peroxide, the great amount of hydroxy group free radical quickly generated is a large amount of at surrounding them
Poly-, the good characteristic that boron-doped diamond film electrode has at normal temperatures and pressures can by advanced electrochemical oxidation process
Directly by mineralization of organic material.
3) boron-doped diamond film electrode is fully combined by the present invention with Fenton technology, utilizes boron-doped diamond film
Electrode self can produce the feature of hydroxyl radical free radical, it is achieved with the synergism of Fenton technology.
The invention have the advantage that
1) this device has the strongest controllability and operability, and user can change anti-according to actual environment demand
Answer condition, to reaching optimum efficiency；
2) compared to tradition Fenton technology, boron-doped diamond film electrode self generates great amount of hydroxy group certainly in the reaction
By base, the photocatalysis of ultraviolet light can make iron ion obtain Efficient Cycle, therefore can avoid sewage disposal
The early stage a large amount of chemical reagent of interpolation, thus more economically environmental protection；
3) boron-doped diamond film electrode stable performance, the most still can work, and has the longest
Service life, it is not necessary to frequently change electrode；
4) present invention optimizes traditional sewage water treatment method, by light degradation technology, electrically-degradable technology, Fenton
Technology and electrochemical oxidation technology combine, and form optical electrical-Fenton degraded means, make sewage degradation treatment imitate
Rate significantly improves.
Accompanying drawing explanation
Fig. 1 is optical electrical based on boron-doped diamond film electrode-fenton sewage processing means structural representation.
Fig. 2 is optical electrical based on boron-doped diamond film electrode-fenton sewage disposal methods methylene blue solution
COD value after different time.
In figure: 1. darkroom 2. hermatic door 3. refrigeration plant 4. light source actuator 5. magnetic stirring apparatus
6. electrolyzer DC source 7. electrode holder 8. anode 9. negative electrode 10. container 11. light source
12. heat exchangers.
Detailed description of the invention
The present invention is not limited by following embodiment, can be true according to the summary of the invention of the invention described above and practical situation
Determine specific embodiments, it will be appreciated that specific embodiment described herein is only in order to explain the present invention, not
For limiting the present invention.
Embodiment 1:
A kind of optical electrical based on boron-doped diamond film electrode-fenton sewage processing means, as it is shown in figure 1, include
Darkroom 1, refrigeration plant 3, light source actuator 4 and DC source 6,
Darkroom 1 has a good seal, all by the wire of cavity wall with the contact point of cavity wall at need through
Cross encapsulation process, in the middle part of the side in darkroom 1, be provided with openable hermatic door 2,；
Being provided with electrolytic cell device, magnetic stirring apparatus 5, light source 11 and heat exchanger 12 in darkroom 1, electrolyzer fills
Putting and include that electrode holder 7, anode 8, negative electrode 9 and container 10, negative electrode 9 are platinum plate electrode, anode 8 is for passing through
The Boron-doped diamond that HF CVD equipment grows on tantalio sheet, anode 8 and negative electrode 9 size
Being 1cm × 2cm, spacing is 5cm；
Container 10 holds sewage, in sewage, puts into iron chloride prepare Fenton-like system, one end of electrode holder 7
Fix with darkroom 1 sidewall, the other end is fixed with the anode 8 and negative electrode 9 be arrangeding in parallel and makes it vertically soak
In sewage, and regulated height and spacing and replacement, the anode 8 of anode 8 and negative electrode 9 by electrode holder 7
It is connected with electrolyzer DC source 6 respectively with negative electrode 9；
Magnetic stirring apparatus 5 is positioned at the bottom in darkroom 1, and container 10 is positioned on magnetic stirring apparatus 5, and magnet rotor is put
In container 10, magnetic stirring apparatus 5 is connected with the own power source being positioned at outside darkroom 1 by wire；
Light source 11 is positioned at the side in darkroom 1 so that the ultraviolet light of light source 11 output is fully irradiated to container 10
On interior solution, light source 11 is by wire and the light source actuator 4 with own power source being positioned at outside darkroom 1
Connect；
Heat exchanger 12 is positioned at the top of side, darkroom 1, and heat exchanger 12 passes through wire and is positioned at outside darkroom 1
Refrigeration plant 3 with own power source connects.
The using method of a kind of described optical electrical based on boron-doped diamond film electrode-fenton sewage processing means, uses
Optical electrical based on boron-doped diamond film electrode-fenton sewage processing means and method process methylene blue solution, step
Rapid as follows:
1) containing in container by sewage, the iron chloride of the methylene blue solution and 0.3mM that take 5mg/L mixes,
Being configured to Fenton solution, regulate the pH value of this solution to 3.5 with dilute hydrochloric acid, this sour environment ensure that ferrum
Conversion between ion and ferrous ion, and the chemical reaction in Fenton-like system, so that degradation efficiency maintains
In higher level；
2) container is placed on the magnetic stirring apparatus in darkroom, opens magnetic stirring apparatus, rotary speed according to
It is moderate how much sewage regulates, it is to avoid in container, sewage degradation reaction only occurs in surrounding them；
3) regulation electrode holder, makes electrode be sufficiently submerged in the pending liquid of sewage, ensures between anode and negative electrode simultaneously
Away from for 3cm, opening electrolyzer DC source, the current output value of regulation DC source is 60mA, electrode sun
The electric current density extremely gone up is 20mA/c, forms effective electricity Fenton-like system；
4) dark-room door is closed；Opening light source power, the luminous power utilizing light source actuator to regulate light source is
360W, the wavelength of light is 365nm, the direct degradation of organic substances of ultraviolet luminous energy, and can promote that iron ion is with ferrous
The conversion of ion, it is achieved the light co-catalysis of sewage disposal；
5) regulation heat exchanger, making the temperature in darkroom is 25 DEG C, entering of suitable temperature beneficially chemical reaction
OK, beneficially degradation efficiency；
6) waiting that the pending liquid of sewage is degraded 120min in container, the phenomenon intuitively observed is sewage color
Shoal, accurately measure sewage disposal degree and need to take out 2mL sample in container and carry out COD determination；
7) after reaching sewage discharge requirement, shutdown, shutdown need to close light source power, electrolyzer DC source,
Heat exchanger, refrigeration plant power supply, open hermatic door, closes magnetic stirring apparatus power supply；
8) regulation electrode holder height, takes out container, and precipitate in the sewage after filtration treatment, it is qualified to obtain
Sewage disposal solution.
Fig. 2 is optical electrical based on boron-doped diamond film electrode-fenton sewage disposal methods methylene blue solution
COD value after different time.Figure shows: the chemical oxygen demand numerical quantity of methylene blue solution is along with when processing
Between carrying out be gradually lowered, this numerical value before the process time 20min decline be especially apparent, for high COD in figure
Simulated water sample, the COD clearance of 100min, close to 80%, processes COD in time 60-100min
Numerical value declines still obvious, and therefore along with the carrying out of the time of process, the COD clearance of simulated water sample can be higher.
Claims (2)
1. optical electrical based on boron-doped diamond film electrode-fenton sewage processing means, it is characterised in that: bag
Include darkroom, refrigeration plant, light source actuator and electrolyzer DC source；Darkroom has good seal, institute
Have and needing to be provided with in the middle part of encapsulation process, the side in darkroom by the wire of cavity wall at the contact point of cavity wall
Openable hermatic door；Electrolytic cell device, magnetic stirring apparatus, light source and heat exchanger, electrolyzer it is provided with in darkroom
Device includes electrode holder, anode, negative electrode and container, and negative electrode is platinum plate electrode, and anode is for passing through HF CVD
The Boron-doped diamond that equipment grows on tantalio sheet, anode and cathode spacing are 3-5cm；Container
For holding sewage, putting into iron chloride and prepare Fenton-like system in sewage, one end of electrode holder is solid with darkroom sidewall
Fixed, the other end is fixed with the anode and negative electrode be arrangeding in parallel and makes it vertically be soaked in sewage, and by electricity
Pole folder regulates height and spacing and the replacement of anode and negative electrode, and anode and negative electrode are respectively with electrolyzer DC source even
Connect；Magnetic stirring apparatus is positioned at the bottom in darkroom, and container is positioned on magnetic stirring apparatus, and magnet rotor is placed in container,
Magnetic stirring apparatus is connected with the own power source being positioned at outside darkroom by wire；Light source be positioned at darkroom side so that
The ultraviolet light of light source output is fully irradiated on the solution in container, and light source passes through wire and the band being positioned at outside darkroom
The light source actuator having own power source connects；Heat exchanger is positioned at the top of side, darkroom, and heat exchanger passes through wire
It is connected with the refrigeration plant with own power source being positioned at outside darkroom.
2. optical electrical based on boron-doped diamond film electrode-fenton sewage processing means as claimed in claim 1
Using method, it is characterised in that step is as follows:
1) sewage is contained in container, in sewage, put into iron chloride prepare Fenton-like system and make chlorination in sewage
Concentration of iron is 0.3mM/L, the pH of sewage is 3-4；
2) container is placed on the magnetic stirring apparatus in darkroom, opens magnetic stirring apparatus, rotary speed according to
In how much sewage regulates and avoid container, sewage degradation reaction only occurs in surrounding them；
3) regulation electrode holder, makes electrode be sufficiently submerged in the pending liquid of sewage, opens electrolyzer DC source,
Regulation output electric current, making by the electric current density of electrode is 10-30mA/c, forms electricity Fenton-like system；
4) closing dark-room door, open light source power, the luminous power utilizing light source actuator to regulate light source is
360W, the wavelength of light is 365nm；
5) regulation heat exchanger, making the temperature in darkroom is 25 DEG C；
6) the pending liquid of sewage is degraded at least 120min in container, and the phenomenon intuitively observed is sewage color
Shoal, accurately measure sewage disposal degree and need to take out 2-3mL sample in container and carry out chemical oxygen demand measurement
Fixed；
7) after reaching sewage discharge requirement, shutdown, shutdown need to close light source power, electrolyzer DC source,
Heat exchanger, refrigeration plant power supply, open hermatic door, closes magnetic stirring apparatus power supply；
8) regulation electrode holder height, takes out container, and precipitate in the sewage after filtration treatment, it is qualified to obtain
Sewage disposal solution.
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| CN112429801A (en) * | 2020-09-30 | 2021-03-02 | 南昌航空大学 | Method for treating high-concentration organic wastewater by ultraviolet light in cooperation with electrochemical oxidation |
| CN113003670A (en) * | 2021-04-08 | 2021-06-22 | 南京环保产业创新中心有限公司 | Safe and efficient electrochemical wastewater treatment device and method |
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