CN101723489A - Solar photo/electric-Fenton treatment method for H acid wastewater of dye immediate - Google Patents
Solar photo/electric-Fenton treatment method for H acid wastewater of dye immediate Download PDFInfo
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- CN101723489A CN101723489A CN200910234684A CN200910234684A CN101723489A CN 101723489 A CN101723489 A CN 101723489A CN 200910234684 A CN200910234684 A CN 200910234684A CN 200910234684 A CN200910234684 A CN 200910234684A CN 101723489 A CN101723489 A CN 101723489A
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- waste water
- fenton
- treatment
- acid
- electricity
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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 relates to a solar photo/electric-Fenton chemical treatment method for H acid wastewater of a dye immediate. The H acid wastewater of the dye immediate is wastewater which is difficult to biochemically degrade, and the treatment of the H acid wastewater by a conventional biological method has poor effect. After the method adopts the solar photo/electric-Fenton method to treat low-concentration H acid wastewater, the COD and the chroma of an effluent can reach the standard; and for high-concentration H acid wastewater, the method comprises the steps of adopting the solar photo/electric-Fenton method to treat first, then adding lime into the high-concentration H acid wastewater, and adding a coagulant Al2(SO4)3 and a coagulant aid PAM into the high-concentration H acid wastewater when the pH value of the wastewater is increased to be between 7 and 8, most of the COD of the wastewater is removed after the treatment, the biodegradability of the wastewater is greatly improved, and the COD and the chroma can reach the standard after subsequent biological treatment is adopted.
Description
Technical field
The present invention relates to a kind of chemical treatment method of dyestuff intermediate H acid waste water.Particularly, lower concentration H acid waste water is adopted after sunlight/electricity-the Fenton method is handled, the COD of waste water and colourity all can qualified discharges; High density H acid waste water is adopted after sunlight/electricity-the combination coagulated method of Fenton method is handled, when removing waste water portion C OD, improved the biodegradability of waste water, for subsequent biological treatment provides strong condition.
Background technology
Waste water from dyestuff is mainly derived from DYE PRODUCTION and printing and dyeing industry, is one of unmanageable trade effluent.Waste water from dyestuff not only contains and is difficult to biodegradable aromatics in a large number, has specific color, complex structure, and has also added various auxiliary agents and a large amount of salt in the dyestuff course of processing, causes waste water to be difficult to degradation treatment with traditional biological treatment.The waste water from dyestuff day output is big, and the improvement rate is low, and the treatment effect of existing treatment unit is unsatisfactory.Therefore, active research effectively the treatment process of degradation of dye waste water become the current important topic that faces.The degradation process of waste water from dyestuff is the oxidized process that is degraded into organic molecule until the environmental sound material of organic macromolecule, with regard to dyestuff itself, its molecular structure is generally comparatively complicated, majority contains aromatic ring, comprise anthraquinone class, azo class etc., at the waste water from dyestuff steady chemical structure, to the virulent characteristics of microorganism, need the effective chemical treatment method of exploitation this class waste water of a kind of improvement.
The present invention is mainly with titanium base plating IrO
2/ SnO
2Novel electrode is an anode, and the activated carbon fiber (ACF) with bigger serface is handled dyestuff intermediate H acid waste water for the sunlight/electricity of negative electrode-Fenton method.For lower concentration H acid waste water, can directly carry out individual curing, COD after the wastewater treatment and colourity is the energy qualified discharge all; For high density H acid waste water, adopt sunlight/electricity-Fenton method to carry out pre-treatment, dosing coagulant Al behind the adjust pH earlier
2(SO
4)
3With coagulant aids PAM, water outlet adopts the biological treatment can qualified discharge at last.
Summary of the invention
The objective of the invention is to be to provide a kind of sunlight/electricity-Fenton chemical treatment method of dyestuff intermediate H acid waste water of economical and efficient, make the direct qualified discharge of lower concentration H acid waste water after handling through the present invention; And high-concentration waste water has improved the biodegradability of waste water through after sunlight/electricity-combination coagulated processing of Fenton method when removing the part organic pollutant, for subsequent biological treatment provides favourable condition.
For achieving the above object, the technical solution used in the present invention is: earlier certain density H acid waste water is injected electrolyzer, add a certain amount of Fe behind the adjusting pH
2+And Na
2SO
4Respectively as catalyzer and supporting electrolyte and use magnetic stirrer, to the negative electrode bubbling air and open D.C. regulated power supply.Under natural solar light irradiation, H acid waste water is degraded.This method is with titanium base plating IrO
2/ SnO
2Novel electrode is an anode, and the activated carbon fiber (ACF) with bigger serface is handled dyestuff intermediate H acid waste water for the sunlight/electricity of negative electrode-Fenton method.For lower concentration H acid waste water, can directly adopt sunlight/electricity-Fenton method to carry out individual curing, COD after the wastewater treatment and colourity is the energy qualified discharge all; For high density H acid waste water, at first adopt sunlight/electricity-Fenton method to handle, add lime in the waste water after sunlight/electricity-Fenton method is handled again, rise at 7～8 o'clock at waste water ph, stop to add lime; Dosing coagulant Al then
2(SO
4)
3With coagulant aids PAM, when removing waste water portion C OD, improved the biodegradability of waste water, adopt again that COD and colourity all can qualified discharges after the subsequent biological treatment.
When lower concentration H acid waste water was handled, optimum process condition was: pH is 3, Fe
2+The value that adds be 1.0mM and supporting electrolyte Na
2SO
4Be 0.10molL
-1, electrolysis voltage is that 10V and solar light irradiation reaction times are 60～90min.
High density H acid waste water is adopted after sunlight/electricity-the Fenton method is handled, CODcr clearance height, the biodegradability of waste water improves greatly.Waste water after described use lime is handled sunlight/electricity-Fenton method carries out coagulation, and its effect mainly shows: add the pH value that lime can be regulated waste water on the one hand, so that follow-up processing; Can generate Fe (OH) with the iron ion in the waste water again on the other hand
2, Fe (OH)
3, produce the colloid flocculation agent, can play absorption, cohesion and co-precipitation to colloid in the water and suspended substance etc., thereby strengthen treatment effect; In addition, Ca
2+Also can with the SO in the waste water
4 2-Generate micro-soluble material, and partly precipitated.By using the waste water after lime is handled sunlight/electricity-Fenton to carry out coagulation experiment, the pH value of waste water rises to 7～8, stops to add of lime, and at this moment, the CODcr clearance of waste water is the highest.Dosing coagulant Al
2(SO
4)
3When adding coagulant aids PAM and handling, Al
2(SO
4)
3Add 15～30mgL respectively with PAM
-1, 0.2～0.5mgL
-1Adopt COD and the equal qualified discharge of colourity behind subsequent biological treatment 8～12h again.
Embodiment
The H acid wastewater treatment of embodiment 1 lower concentration
With 200mgL
-1The H of lower concentration acid waste water is process object, is 3 at pH, Fe
2+The value that adds be 1.0mM and supporting electrolyte Na
2SO
4Be 0.10mol.L
-1, electrolysis voltage is under the top condition of 10V, the natural solar light irradiation reaction times be under the 60min condition to wastewater treatment after COD and color removal qualified discharge.
The H acid wastewater treatment of embodiment 2 high densitys
With 1000mgL
-1The H of high density acid waste water is process object, is 3 at pH, Fe
2+The value that adds be 1.0mM and supporting electrolyte Na
2SO
4Be 0.10molL
-1, electrolysis voltage is that 10V and solar light irradiation reaction times are under the top condition of 90min, to the variation of waste water COD cr degradation effect and biodegradability respectively shown in the table 1.
Table 1 sunlight/electricity-Fenton method is to the influence of wastewater biodegradability
Use the waste water after lime is handled sunlight/electricity-Fenton to carry out coagulation experiment, the pH value of waste water rises to 7～8, stops to add of lime, and at this moment, the CODcr clearance of waste water is up to about 20%.Adopt dosing coagulant Al
2(SO
4)
3The waste water of the method that adds coagulant aids PAM after to lime coagulation is handled, at Al
2(SO
4)
3Add 30mgL respectively with PAM
-1, 0.3mgL
-1, the CODcr clearance has been up to 37.89%.Adopt COD and the equal qualified discharge of colourity behind the subsequent biological treatment 12h again.
Claims (3)
1. sunlight/electricity-Fenton the chemical treatment method of a dyestuff intermediate H acid waste water is characterized in that, certain density H acid waste water is injected electrolyzer, regulates pH, adds a certain amount of Fe
2+And Na
2SO
4Respectively as catalyzer and supporting electrolyte and use magnetic stirrer, to the negative electrode bubbling air and open D.C. regulated power supply; Under natural solar light irradiation, H acid waste water is degraded; The used anode of this method is for than high electrochemical stability, the titanium base plating IrO that analyses oxygen and katalysis characteristic
2/ SnO
2Electrode, negative electrode are the activated carbon fiber of bigger serface; This method is handled all direct qualified discharges of back COD and colourity to lower concentration H acid waste water, and when high density H acid waste water handled, by uniting follow-up coagulation process, not only removed partial organic substances, and improved the biodegradability of waste water, adopt again that COD and colourity all can qualified discharges after the subsequent biological treatment.
2. method according to claim 1 is characterized in that, the sunlight/electricity-Fenton treatment process that is used for lower concentration dyestuff intermediate H acid waste water is: pH is 3, Fe
2+The value that adds be 1.0mM and supporting electrolyte Na
2SO
4Be 0.10molL
-1, electrolysis voltage is that 10V and natural solar light irradiation reaction times are 60～90min.
3. method according to claim 1, it is characterized in that, when being used for high density dyestuff intermediate H acid wastewater treatment, carrying out sunlight/electricity-Fenton method earlier handles, add lime in the waste water after sunlight/electricity-Fenton method is handled again, adjust pH to 7～8 o'clock stop to add lime, then dosing coagulant Al
2(SO
4)
3With coagulant aids PAM, its dosage is respectively 15～30mgL
-1With 0.2～0.5mgL
-1Adopt COD and the equal qualified discharge of colourity behind subsequent biological treatment 8～12h again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910234684A CN101723489A (en) | 2009-11-27 | 2009-11-27 | Solar photo/electric-Fenton treatment method for H acid wastewater of dye immediate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910234684A CN101723489A (en) | 2009-11-27 | 2009-11-27 | Solar photo/electric-Fenton treatment method for H acid wastewater of dye immediate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101723489A true CN101723489A (en) | 2010-06-09 |
Family
ID=42445145
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|---|---|---|---|
| CN200910234684A Pending CN101723489A (en) | 2009-11-27 | 2009-11-27 | Solar photo/electric-Fenton treatment method for H acid wastewater of dye immediate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775808A (en) * | 2012-08-23 | 2012-11-14 | 楚源高新科技集团股份有限公司 | Process for recycling ammonium sulfate and synthesizing acidic dye by T-acid mother liquor wastewater |
| CN102910853A (en) * | 2011-08-03 | 2013-02-06 | 浙江龙盛化工研究有限公司 | Method for producing naphthalene-based superplasticizer by using H acid wastewater recovered solution |
| CN105236623A (en) * | 2015-10-22 | 2016-01-13 | 浙江奇彩环境科技有限公司 | H acid waste water treatment method |
| CN105523674A (en) * | 2016-02-05 | 2016-04-27 | 江苏明盛化工有限公司 | Treatment method for 1-amino-8-naphthol-3,6-disulfonic acid monosodium salt production wastewater and equipment for implementing method |
| CN105645506A (en) * | 2015-12-29 | 2016-06-08 | 哈尔滨工业大学 | Light-Fenton catalytic oxidation coal chemical industry wastewater deep treatment system and coal chemical industry wastewater treatment method thereof |
| CN108439667A (en) * | 2018-02-07 | 2018-08-24 | 常州沃麦迪环保科技有限公司 | A kind of dyeing waste water method of comprehensive utilization based on Fenton principles |
-
2009
- 2009-11-27 CN CN200910234684A patent/CN101723489A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910853A (en) * | 2011-08-03 | 2013-02-06 | 浙江龙盛化工研究有限公司 | Method for producing naphthalene-based superplasticizer by using H acid wastewater recovered solution |
| CN102910853B (en) * | 2011-08-03 | 2018-06-19 | 浙江龙盛化工研究有限公司 | A kind of method using H acid Sewage treatments liquid production naphthalene series high-efficiency water-reducing agent |
| CN102775808A (en) * | 2012-08-23 | 2012-11-14 | 楚源高新科技集团股份有限公司 | Process for recycling ammonium sulfate and synthesizing acidic dye by T-acid mother liquor wastewater |
| CN105236623A (en) * | 2015-10-22 | 2016-01-13 | 浙江奇彩环境科技有限公司 | H acid waste water treatment method |
| CN105645506A (en) * | 2015-12-29 | 2016-06-08 | 哈尔滨工业大学 | Light-Fenton catalytic oxidation coal chemical industry wastewater deep treatment system and coal chemical industry wastewater treatment method thereof |
| CN105645506B (en) * | 2015-12-29 | 2018-07-03 | 哈尔滨工业大学 | A kind of smooth Fenton catalysis oxidation coal chemical industrial waste water advanced treatment system and its method for handling coal chemical industrial waste water |
| CN105523674A (en) * | 2016-02-05 | 2016-04-27 | 江苏明盛化工有限公司 | Treatment method for 1-amino-8-naphthol-3,6-disulfonic acid monosodium salt production wastewater and equipment for implementing method |
| CN105523674B (en) * | 2016-02-05 | 2018-05-22 | 江苏明盛化工有限公司 | The processing method of H acid producing waste waters and the equipment for implementing this method |
| CN108439667A (en) * | 2018-02-07 | 2018-08-24 | 常州沃麦迪环保科技有限公司 | A kind of dyeing waste water method of comprehensive utilization based on Fenton principles |
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Application publication date: 20100609 |