CN105293640A - Method for treating dye waste water by combination of CeO2/Zr electrode and hydrogen peroxide - Google Patents
Method for treating dye waste water by combination of CeO2/Zr electrode and hydrogen peroxide Download PDFInfo
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- CN105293640A CN105293640A CN201510799889.9A CN201510799889A CN105293640A CN 105293640 A CN105293640 A CN 105293640A CN 201510799889 A CN201510799889 A CN 201510799889A CN 105293640 A CN105293640 A CN 105293640A
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- China
- Prior art keywords
- hydrogen peroxide
- rare earth
- electrode
- waste water
- wastewater treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention belongs to the field of eco-friendly waste water treatment and relates to a method for treating dye waste water by combination of a rare earth-modified electrode CeO2/Zr electrode and hydrogen peroxide. Through combination of the rare earth-modified electrode and hydrogen peroxide, the method for treating dye waste water greatly reduces a rare earth loss and improves a rare earth utilization rate. Through use of the rare earth-modified electrode and hydrogen peroxide according to a certain ratio, the substrate undergoes an oxidative coupling reaction to produce a polymer, pH of the polymer is adjusted, and the formed iron hydroxide can adsorb dye molecules so that the dye molecules form coprecipitates and COD is removed.
Description
Technical field
The invention belongs to environment-protection wastewater process field, particularly one utilizes rare earth modified electrode CeO
2the method of/Zr electrode and hydrogen peroxide interworking dye wastewater treatment.
Background technology
Dye industry belongs to high energy consumption, high pollution industry.China often produces 1 ton of dyestuff, about waste discharge 744m
3, about have the dyestuff of 10%-20% to discharge with waste water in dyeing and printing process process, often discharge 1 ton of waste water, 20 tons of water bodys will be polluted.
Wastewater treatment is in recent years the project that government attaches great importance to always.The basic raw material of DYE PRODUCTION is benzene series, naphthalene system, anthraquinone, aniline and diphenyl amine compound, and in production process the many and material such as metal, salt chelating, cause the high chemical oxygen demand that waste water from dyestuff mostly is saliferous, chloride or bromide, micro-acid or micro-alkali, high chroma organic waste water.A unmanageable class waste water at present.Due to the aromatics that the organism in waste water from dyestuff is all with nitro, amino groups mostly, strong to Ecotoxicology, be difficult to Biochemical method; And the aromatics efficiency of materializing strategy that makes soluble in water after sulfonation is extremely low, therefore, explores a kind of efficient, economic treatment process and there is realistic meaning.
Recent years, domestic some environmental worker carried out the research work of the organic waste water of rare earth catalyst oxide treatment bio-refractory widely, had made some progress.Liu Deqi etc. utilize rare earth to coordinate a small amount of hydrogen peroxide oxidation substrate, and the organism of some nascent states is coupled, and form aggregate, thus change their solvability, settleabilities in waste water.But there is the problem that rare earth runs off in these methods.
This experiment rare earth modified electrode coordinates hydrogen peroxide dye wastewater treatment, greatly can reduce the loss of rare earth, improve the utilization ratio of rare earth.First this method utilizes rare earth modified electrode to coordinate a certain proportion of hydrogen peroxide that substrate generation oxidation coupling is reacted and forms polymkeric substance, pass through adjust ph again, utilize the ironic hydroxide formed can make its coprecipitation by adsorpting dye molecule, reach the object removing COD.
Summary of the invention
The object of the invention is a kind of method finding more environmental protection treatment waste water from dyestuff.Utilize solar cell and CeO
2/ Zr Electrode treatment waste water from dyestuff, coordinates hydrogen peroxide dye wastewater treatment with rare earth modified electrode, can reduce rare earth and run off, improve the utilization ratio of rare earth.The object of the invention is to be achieved through the following technical solutions:
1. rare earth modified electrode----CeO described in
2/ Zr electrode production process, the process such as preparation, coating through polishing, degreasing, acid etching, painting feed liquid prepares CeO
2/ Zr electrode.
2. CeO described in
2/ Zr electrode coordinates in hydrogen peroxide dye wastewater treatment process, and the waste water from dyestuff getting 100mL-300mL is placed in glass reactor, adds appropriate NaNO
3as ionogen, use dilute sulphuric acid adjust ph to about 1-4 simultaneously.
3. the reactor in above-mentioned 2 is put into electric-heated thermostatic water bath, be preheating to experiment temperature required after, under certain response voltage, (anode uses rare earth modified electrode, and negative electrode uses stainless steel electrode) carries out electrolytic reaction.
4., after above-mentioned 3 electrolytic reactions terminate, in reaction soln, add a certain amount of hydrogen peroxide continue reaction for some time, then add a certain amount of FeSO
47H
2o.When bubble formation speed is less in question response solution, add Ca (OH)
2adjust ph is to about 7-10.Leave standstill about 2-3h, completely to be precipitated, filter.
5. in above-mentioned 4 reaction process, the reaction soln of 5mL-25mL is got at interval at set intervals, measures the COD of water sample with potassium dichromate process, measures the colourity of water sample by dilution method.
Embodiment
The present invention's following examples illustrate, but the present invention is not limited to following embodiment, and under the prerequisite not departing from the described aim in front and back, change is included in technical scope of the present invention.
Embodiment
1. rare earth modified electrode preparation: the process such as preparation, coating through polishing, degreasing, acid etching, painting feed liquid has prepared CeO
2/ Zr electrode.
2. the waste water from dyestuff getting 150mL is placed in glass reactor, adds appropriate NaNO
3as ionogen, regulate pH to be 3 with dilute sulphuric acid simultaneously.Reactor is put into electric-heated thermostatic water bath, be preheating to experiment temperature required after, under certain response voltage, (anode uses rare earth modified electrode, and negative electrode uses stainless steel electrode) carries out electrolytic reaction.After electrolytic reaction terminates (blank test does not do electrolysis treatment), in reaction soln, add a certain amount of hydrogen peroxide continue reaction for some time, then add a certain amount of FeSO
47H
2o.When bubble formation speed is less in question response solution, add Ca (OH)
2adjust ph is 8.Leave standstill 2h, completely to be precipitated, filter.Get the reaction soln of 15mL, measure the COD of water sample with potassium dichromate process.
3. potassium dichromate process measures the COD of water sample: take 3g oxidation solution (0.1mol/LK with analytical balance
2cr
2o
7-2%Ag
2sO
4-30MH
2sO
4) in 250mL erlenmeyer flask, draw waste water sample 5g and add wherein, upper cover is with 50mL small beaker, (one is prevent floating matter from entering, two is evaporations when preventing heating), put into the baking oven being warming up to 160 DEG C, when equitemperature heat is to 160 DEG C, clock 20 minutes, take out, cool, add 5mL distilled water in bottle, after cooling, add 2 phenanthroline ion indicator, dropping to the bright green brown that reddens by 0.05mol/L l ferrous ammonium sulfate solution is terminal.The water of blank redistilled water or comparable purity replaces water sample, same dry after 20 minutes with ferrous ammonium sulphate titration it.The blank water sample quality often organizing sample all needs to correct, bearing calibration: the volume of (this group oxidation solution quality/ultrapure water oxidation solution quality) × ultrapure water titrated sulfuric acid iron ammonium.
To obtain in the dyeing waste water of two kinds of differential responses conditions process COD clearance result as following table 1, can find out that electrolysis and hydrogen peroxide coordinate dye wastewater treatment compared with a use electrolysis treatment waste water, the former COD clearance is higher, illustrates that rare earth modified electrode coordinates hydrogen peroxide dye wastewater treatment to improve the utilization ratio of rare earth.
Table 1 differential responses condition is on the impact of COD clearance in dyeing waste water
Claims (2)
1. one kind utilizes CeO
2the method of/Zr electrode and hydrogen peroxide interworking dye wastewater treatment, is characterized in that: the method dye wastewater treatment first utilizes CeO
2/ Zr electrode carries out electrolytic reaction as anode to waste water from dyestuff, then adds hydrogen peroxide system generation oxidation coupling is reacted.
2. according to claims 1, utilize CeO
2the method of/Zr electrode and hydrogen peroxide interworking dye wastewater treatment, is characterized in that: after the reaction of generation oxidation coupling, add FeSO
47H
2o, utilizes Ca (OH)
2regulation system pH value is to alkalescence, the ironic hydroxide formed can make its coprecipitation by adsorpting dye molecule, reaches the object removing COD, by coordinating hydrogen peroxide dye wastewater treatment with rare earth modified electrode, greatly can reduce the loss of rare earth, improve the utilization ratio of rare earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510799889.9A CN105293640A (en) | 2015-11-19 | 2015-11-19 | Method for treating dye waste water by combination of CeO2/Zr electrode and hydrogen peroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510799889.9A CN105293640A (en) | 2015-11-19 | 2015-11-19 | Method for treating dye waste water by combination of CeO2/Zr electrode and hydrogen peroxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105293640A true CN105293640A (en) | 2016-02-03 |
Family
ID=55191584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510799889.9A Pending CN105293640A (en) | 2015-11-19 | 2015-11-19 | Method for treating dye waste water by combination of CeO2/Zr electrode and hydrogen peroxide |
Country Status (1)
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| CN (1) | CN105293640A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986400A (en) * | 2017-12-12 | 2018-05-04 | 江南大学 | A kind of method of Ce complexs/Zr Electrode treatment p-phenylenediamine waste water from dyestuff |
| CN108033519A (en) * | 2017-12-12 | 2018-05-15 | 江南大学 | A kind of method of Nd complexs/Zr Electrode treatment waste water from dyestuff |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038391A (en) * | 1999-08-03 | 2001-02-13 | Toshiba Corp | Treatment of waste liquid containing surfactant |
| CN104310573A (en) * | 2014-11-19 | 2015-01-28 | 江南大学 | Combination electrode preparation method and application of combination electrode preparation method in bioelectricity Fenton system |
-
2015
- 2015-11-19 CN CN201510799889.9A patent/CN105293640A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001038391A (en) * | 1999-08-03 | 2001-02-13 | Toshiba Corp | Treatment of waste liquid containing surfactant |
| CN104310573A (en) * | 2014-11-19 | 2015-01-28 | 江南大学 | Combination electrode preparation method and application of combination electrode preparation method in bioelectricity Fenton system |
Non-Patent Citations (2)
| Title |
|---|
| 李永峰等: "《现代环境工程材料》", 31 July 2012, 机械工业出版社 * |
| 陈文等: "CeO2/Ti电极催化双氧水氧化耦合处理染料废水研究", 《广东化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986400A (en) * | 2017-12-12 | 2018-05-04 | 江南大学 | A kind of method of Ce complexs/Zr Electrode treatment p-phenylenediamine waste water from dyestuff |
| CN108033519A (en) * | 2017-12-12 | 2018-05-15 | 江南大学 | A kind of method of Nd complexs/Zr Electrode treatment waste water from dyestuff |
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Application publication date: 20160203 |