CN109368767A - The method of the electro-active persulfate degrading azoic dye waste water of biology - Google Patents
The method of the electro-active persulfate degrading azoic dye waste water of biology Download PDFInfo
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- CN109368767A CN109368767A CN201811300125.0A CN201811300125A CN109368767A CN 109368767 A CN109368767 A CN 109368767A CN 201811300125 A CN201811300125 A CN 201811300125A CN 109368767 A CN109368767 A CN 109368767A
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- persulfate
- cathode
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
- C02F2101/38—Organic compounds containing nitrogen
Abstract
A kind of method that the present invention discloses electro-active persulfate oxidation degrading azoic dye waste water of biology, belongs to technical field of sewage.Microorganism in anode of microbial fuel cell room generates electronics after substrate of degrading, and is transmitted to cathode electrode through external circuit after electron transmission to anode electrode.Persulfate makees electron acceptor in cathode, constantly receives electronics on the cathode electrode.Electronics constantly generates, transmits, receives.To form bioelectricity.Persulfate generates the potentiometric titrations with strong oxidizing property after cathode is continuously available electronicsPotentiometric titrations can have high oxidation-reduction potential, the azo dye wastewater in energy the efficient oxidation degradation cathode chamber.Easy without additional power output, reaction system, low energy consumption, and without secondary pollution.
Description
Technical field
The present invention relates to technical field of sewage, and in particular to a kind of electro-active persulfate degradation azo dyes of biology
The method of waste water.
Background technique
Azo dyes is as the dyestuff being most widely used at present, during actual production and application about
The dyestuff of 10%-15% is unprocessed to be discharged into environment.Dissolved Oxygen in Water is not only reduced, water body self-purification ability is destroyed,
Serious destruction is caused to water ecological setting, and seriously threatens the health of contactee.Therefore, dye wastewater must discharge
Preceding carry out harmless treatment.Persulfate high-level oxidation technology can effectively overcome traditional treatment method oxidability it is weak, processing week
The disadvantage of phase length, energy efficient oxidation degradation of dye waste water improve waste water from dyestuff and endanger to caused by ecological environment, human health etc.
Evil.Persulfate itself has certain oxidisability, but oxidability is weaker, it is difficult to waste water from dyestuff be effectively treated.Spy need to be provided
Fixed activation method makes persulfate reaction generate potentiometric titrationsOxidative degradation azo dye wastewater.
In view of the above-mentioned problems, needing to research and develop a kind of efficient, energy-saving and environmental protection persulfate activating technology.Existing activation
Technology includes thermal activation, photoactivation, transition metal activation, electro-active etc..However thermal activation, photoactive reaction condition need to be added
Heat or ultraviolet lamp irradiation, reaction condition are complex；It is residual that a large amount of transition metal are had after transition metal activation persulfate
It stays in water body, be easy to cause secondary pollution；Electro-active that additional electrical energy is needed to export, energy consumption is relatively high.The prior art is in reality
All there is many deficiencies in, cannot achieve large-scale practical application processing azo dye wastewater.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of electro-active persulfate degradation azo of biology
The method of dyestuff activates persulfate using the bioelectricity that microbiological fuel cell itself generates, and generating has strong oxygen
The potentiometric titrations for the property changedOxidative degradation azo dye wastewater.
The technical solution adopted by the present invention is that: electronics is generated under microorganism catalysis using anode of microbial fuel cell,
It is transmitted to cathode through external circuit, the persulfate of cathode is activated after obtaining electronics, to generate the sulphur with strong oxidizing property
The oxidation-reduction potential of acid group free radical, potentiometric titrations is higher, can effective degrading azoic dye waste water.
It is the substrate being degraded under microbial action in the anode chamber of microbiological fuel cell, is persulfuric acid in cathode chamber
Salt and azo dye wastewater.Electrode is made using carbon felt, is inserted into the essentially equal anode chamber of volume and cathode chamber, constitutes anode
Electrode and cathode electrode.It is separated between anode chamber and cathode chamber with proton exchange membrane, two Room electrodes are through external circuit, and it is outer to connect
Load with lotus connection.The substrate being degraded in anode chamber generates electronics, and electron transmission to anode electrode surface is arrived via external circuit
Up to cathode electrode surface, obtained by cathode electronics receptor.Electronics is continuously generated, transmits, receives, to realize bioelectric production
It is raw.
The biology that anode of microbial fuel cell generates is electrically communicated to the persulfate generation after cathode electrode with cathode chamber
Reaction, persulfate obtain electrons reaction and generate potentiometric titrationsPotentiometric titrations stability is relatively strong and aoxidizes
Property it is high, be able to achieve the oxidative degradation of azo dyes waste water.
The present invention has the beneficial effect that afterwards by adopting the above technical scheme
1, the present invention generates the sulfuric acid with strong oxidizing property using microbiological fuel cell itself electricity production activation persulfate
Root free radicalIt can the efficient oxidation degrading azoic dye waste water.
2, reaction system of the present invention is simple.Directly yin is electrically communicated to using the biology that anode of microbial fuel cell generates
Pole.Persulfate obtains electronics in cathode and is directly activated as potentiometric titrationsWithout providing heat source, illumination condition
Deng reaction system is simple.
3, the present invention is exported without additional electrical energy, and low energy consumption.The electricity that anode of microbial fuel cell degradation of organic substances generates
Son is transmitted to cathode electrode through anode electrode surface, external circuit.Electronics is continuously generated and transmits, and produces bioelectricity.
4, the present invention is without secondary pollution.Persulfate makees electron acceptor in microbiological fuel cell, obtains directly anti-after electronics
Ying ChengOxidative degradation azo dyes.Secondary pollution caused by conventional transition metal activation residual transition metals is avoided, is accorded with
Close higher environmental requirement.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of microbiological fuel cell；
Fig. 2 is that microbiological fuel cell output electricity changes with time figure；
Fig. 3 is the removal rate change curve of the electro-active persulfate oxidation methyl orange dye of biology.
In Fig. 1: 1 anode sample tap, 2 external circuit, 3 anode water inlets, 4 anode electrodes, 5 proton exchange membrane, 6 anode chambers, 7
Lotus, 8 cathode sample taps, 9 cathode water inlets, 10 cathode electrodes, 11 cathode chambers are loaded with outside.
Specific embodiment:
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, a kind of method of the electro-active persulfate degrading azoic dye waste water effect of biology of the invention, packet
Include: proton exchange membrane pretreatment prepares electrode, building microbiological fuel cell, starting bioelectricity, activation persulfate.
The proton exchange membrane pretreatment is using the preceding H for being 3% in mass fraction by proton exchange membrane 52O2In boil
Then 1h is successively respectively handled in 80 DEG C of deionized water, the sulfuric acid of 0.5mol/L, deionized water with removing surface organic matter
1h is finally placed in spare in deionized water.
The electrode for preparing is that two pieces of carbon felts are immersed in the sulfuric acid of 1mol/L after 12h, uses distilled water flushing.It rinses
After clean, then with the NaoH of 1mol/L 12h is impregnated, distilled water repeated flushing is used after taking-up, baking oven is put into after rinsing well and is dried,
Intert carbon felt using titanium silk and anode electrode 4, cathode electrode 10 is respectively prepared.
The building microbiological fuel cell is the container that sealing is made using poly (methyl methacrylate) plate, is set in anode chamber left end
An anode water inlet 3 is counted, for replacing anolyte；An anode sample tap 1 is designed in anode chamber upper end, for periodically taking
Sample detects water quality.Equally a cathode water inlet 9 and cathode sample tap 8 are also designed in cathode.Anode chamber 6 and 11 body of cathode chamber
It is long-pending equal, completely cut off using proton exchange membrane 5, and be aided with silica gel pad to ensure the leakproofness that two Room connect.Anode electrode 4, cathode
10 electrodes are individually positioned in anode, cathode chamber and remain to being equidistant for proton exchange membrane film 5.Anode electrode and cathode electrode
It links together through external circuit with outer load with after lotus is connected, series connection is outer to load with lotus 7 in order to detect microbiological fuel cell biology
The voltage of electricity.
The starting bioelectricity is that Rhodospirillum rubrum bacterium solution, substrate and electrolyte phosphoric acid are added to anode chamber 6, yin
Persulfate and electrolyte phosphoric acid are added in pole room 11.After longtime running, microbes are enriched on carbon felt electrode, are realized micro-
Bio-film colonization.7 both end voltage of lotus is loaded with by the continuous automatic collection output voltage of 16 channel signal collectors of connection computer outside
And store, it is recorded 1 time every 4min.After voltage stabilization, replacement catholyte is the mixed solution of azo dyes and persulfate.
The activation persulfate is that the microorganism of anode chamber 6 constantly generates electronics, electron transmission after substrate of degrading
Reach cathode electrode 10 by external circuit after to anode electrode 4, it is continuous on cathode electrode 10 that persulfate makees electron acceptor
To electronics, electronics constantly generates, transmits, receives.Persulfate reacts after obtaining electronics generates potentiometric titrations, sulfate radical
Free-radical oxidation is strong, performance is stable, can continuously and effectively oxidative degradation azo dyes.
1 embodiment of the invention presented below is with implementer's case that the present invention is further explained:
Embodiment 1
Construct microbiological fuel cell structure shown in FIG. 1.Microbiological fuel cell is purple in sterile purification station
Outer light irradiation 30min, blowing about 15min blow out the ozone generated after ultraviolet irradiation, then start microbiological fuel cell.It opens
The anolyte in dynamic stage are as follows: bacterium solution 1mL, the 129mL substrate (Polyester wastewater) of rhodospirillum rubrum is produced electricity for the breeding of dark red sieve bacterium, and
Using phosphate buffer adjusting pH value of solution to 7.0, and serve as electrolyte.Catholyte are as follows: the potassium persulfate solution of 2mmol/L is used
It is 3.0 that phosphate buffer, which adjusts pH,.After longtime running, microbes are enriched on carbon felt electrode, realize microorganism colonization.Outside
7 both end voltage of lotus is loaded with by the continuous automatic collection output voltage of 16 channel signal collectors of connection computer and is stored, every
4min is recorded 1 time.After voltage stabilization, the methyl orange solution that catholyte is 30mg/L is replaced, is added after adjusting pH value of solution to 3.0
The potassium peroxydisulfate of 2mmol/L.The continuous automatic collection output voltage of 16 channel signal collectors simultaneously stores, and draws out as shown in Figure 2
The graph of relation that changes over time of output voltage.3mL water sample is taken after 1,2,4,8,12,24 hour respectively, and 1mL is added
The free radical in water sample is quenched in methanol, measures methyl orange removal rate using spectrophotometry.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (3)
1. a kind of electro-active persulfate degrading azoic dye waste water of biology, it is characterized in that: the anode chamber of microbiological fuel cell
(6) microorganism in generates electronics after substrate of degrading, and electron transmission to anode electrode (4) is transmitted to by external circuit (2)
Cathode electrode (10).Persulfate makees electron acceptor in cathode, constantly receives electronics on cathode electrode (10).Electronics is continuous
It generates, transmitting, receive.To form bioelectricity.After persulfate is continuously available electronics on cathode electrode (10), sulfuric acid is generated
Root free radicalRealize that the electro-active persulfate of biology generates free radicals.
2. biological electro-active persulfate degrading azoic dye waste water according to claim 1, it is characterized in that: Microbial fuel
Persulfate obtains electronics and is activated generation potentiometric titrations on cell cathode electrode (10), and potentiometric titrations have higher
Oxidation-reduction potential energy the efficient oxidation degradation cathode chamber (11) in azo dye wastewater.
3. biological electro-active persulfate degrading azoic dye waste water according to claim 1, it is characterized in that: in acid condition
Lower activation persulfate, the pH value of microorganism fuel cell cathode are 3.0, and the concentration of persulfate is 2mmol/L.
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| CN201811300125.0A CN109368767A (en) | 2018-11-02 | 2018-11-02 | The method of the electro-active persulfate degrading azoic dye waste water of biology |
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| CN201811300125.0A CN109368767A (en) | 2018-11-02 | 2018-11-02 | The method of the electro-active persulfate degrading azoic dye waste water of biology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605117A (en) * | 2020-12-28 | 2021-04-06 | 昆明理工大学 | Device and method for repairing heavy metal-organic compound contaminated soil through electrochemistry and electromotion cooperation |
| CN114656030A (en) * | 2022-03-28 | 2022-06-24 | 上海海洋大学 | Microbial desalination fuel cell and method for removing odor substances in water by electro-activating persulfate |
| CN116040750A (en) * | 2023-02-07 | 2023-05-02 | 沈阳工业大学 | Direct-current corona needle plate discharge reactor for removing azo dye in wastewater |
Citations (1)
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| CN107758836A (en) * | 2017-11-06 | 2018-03-06 | 北京师范大学 | A kind of microbiological fuel cell coupling persulfuric acid salt Fenton technique hardly degraded organic substance minimizing technology in situ |
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2018
- 2018-11-02 CN CN201811300125.0A patent/CN109368767A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107758836A (en) * | 2017-11-06 | 2018-03-06 | 北京师范大学 | A kind of microbiological fuel cell coupling persulfuric acid salt Fenton technique hardly degraded organic substance minimizing technology in situ |
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| 付乾等: "过硫酸钾为电子受体的微生物燃料电池性能特性", 《工程热物理学报》 * |
| 金春姬等: "利用过硫酸盐阴极型微生物燃料电池降解蒽醌燃料活性艳蓝的研究", 《中国海洋大学学报(自然科学版)》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605117A (en) * | 2020-12-28 | 2021-04-06 | 昆明理工大学 | Device and method for repairing heavy metal-organic compound contaminated soil through electrochemistry and electromotion cooperation |
| CN114656030A (en) * | 2022-03-28 | 2022-06-24 | 上海海洋大学 | Microbial desalination fuel cell and method for removing odor substances in water by electro-activating persulfate |
| CN114656030B (en) * | 2022-03-28 | 2024-01-23 | 上海海洋大学 | Microbial desalination fuel cell and method for removing odor substances in water by using electro-active persulfate |
| CN116040750A (en) * | 2023-02-07 | 2023-05-02 | 沈阳工业大学 | Direct-current corona needle plate discharge reactor for removing azo dye in wastewater |
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Application publication date: 20190222 |