CN103145228A - Method for decoloring wastewater dyed by active dye - Google Patents
Method for decoloring wastewater dyed by active dye Download PDFInfo
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- CN103145228A CN103145228A CN201310078136XA CN201310078136A CN103145228A CN 103145228 A CN103145228 A CN 103145228A CN 201310078136X A CN201310078136X A CN 201310078136XA CN 201310078136 A CN201310078136 A CN 201310078136A CN 103145228 A CN103145228 A CN 103145228A
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- wastewater
- peracetic acid
- dyed
- active dye
- reactive
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Abstract
The invention discloses a method for decoloring wastewater dyed by active dye, and belongs to the technical field of textile printing and dyeing. The method is characterized by comprising the following processes of adding 2-8g/L of peracetic acid to the wastewater dyed by the active dye, heating the wastewater to 90-95 DEG C, and carrying out insulation treatment for 25-30 minutes. The oxidizing ingredient released after heating the peracetic acid is utilized to destroy an active dye conjugate structure, so as to achieve the target of effective decolorization; and peracetic acid is a common sanitizer, and has no adverse effect on the environment.
Description
Technical field
The present invention relates to a kind of reactive dyed wastewater decoloring method, particularly utilize Peracetic Acid to the method for reactive dyed wastewater decolouring, belong to technical field of textile printing.
Background technology
Reactive dyestuffs are to contain one or more reactive group in its lewis' acid, under certain condition can with cellulosic fibre on hydroxyl, protein and tynex on amino etc. bonding reaction occurs, generate the dye of covalent bonds between dyestuff and fiber.The molecular structure of reactive dyestuffs is simple, lovely luster, and chromatogram is more complete, and is easy to use, thereby obtains using the most widely in printing and dyeing industry.But, in the time of reactive dyestuffs and fiber-reactive, can also react with steeping in water for reconstitution unboiled water solution, hydrolysate generally can not react with fiber again, thereby reduce the utilization ratio of reactive dyestuffs, in raffinate, dyestuff content can up to 30-40%, make the colourity of reactive dyed wastewater higher.
During reactive dyed wastewater is processed, a very important task is decoloured to it exactly, reduces the colourimetric number of waste water, makes it reach the primary standard of discharge of wastewater.Method to the active dye wastewater decolouring has a lot, as activated sludge process, photocatalytic degradation method, ultrasound polyethylene-reducing solution, chemical flocculation and enzyme decomposition method etc., but all has certain problem.Activated sludge process is relatively poor to the dye decolored efficient of some structure-activity, can not reach final requirement.The method of photocatalytic degradation and ultrasonic degradation is higher to conditional requests such as equipment, also is not used widely in industry.Chemical flocculation need use some metal ion, can cause certain influence to environment, and the efficient of decolouring is not high yet.Zymolytic method is to utilize the oxidizing reaction of Laccase Catalyzed reactive dyestuffs and make dye decoloredly, but this method cost is high, and decolorizing effect is subject to enzyme and lives and stable impact.
Summary of the invention
The purpose of this invention is to provide a kind of Peracetic Acid of utilizing to the method for reactive dyed wastewater decolouring, can rapidly and efficiently complete decolorization, again to environment without harmful effect.
Basic skills of the present invention is described below: add the 2-8g/L Peracetic Acid in reactive dyed wastewater, wastewater temperature is risen to 90-95 ℃, 25-30min is processed in insulation.
The present invention's Peracetic Acid used is oxygenant and sterilizing agent commonly used in industry, can produce by simple chemical reaction.The Peracetic Acid that the present invention adds is the mixed solution that sulfuric acid, hydrogen peroxide and Glacial acetic acid reaction are produced, and does not need the Peracetic Acid separating-purifying.The Peracetic Acid add-on can be regulated according to Wastewater Dyes quantity, dye structure and decolouring requirement etc.After adding Peracetic Acid, wastewater temperature is elevated to 90-95 ℃, decomposition of peracetic acid discharges oxydised component and the dyestuff conjugated structure is destroyed at this temperature, reaches the purpose of decolouring.After the 25-30min insulation was processed, the reaction of Peracetic Acid and dyestuff was completed, and the waste water decoloring process just can finish.
The invention provides a kind of Peracetic Acid of utilizing to the method for reactive dyed wastewater decolouring, the oxydised component that discharges after the method utilization heating Peracetic Acid destroys the reactive dyestuffs conjugated structure and reaches effective decolouring purpose, and Peracetic Acid has no adverse effect to environment originally as a kind of sterilizing agent commonly used.
Embodiment
Further illustrate the present invention below by embodiment.
Embodiment 1
Add the 2g/L Peracetic Acid in the active orange dye dyeing waste-water, wastewater temperature is risen to 90 ℃, 30min is processed in insulation.Measuring this dyeing waste-water decolorizing rate is 90%.
Embodiment 2
Add the 6g/L Peracetic Acid in the active red dye dyeing waste-water, wastewater temperature is risen to 90 ℃, 25min is processed in insulation.Measuring this dyeing waste-water decolorizing rate is 82%.
Embodiment 3
Add the 3g/L Peracetic Acid in the grey dyeing waste water of activity, wastewater temperature is risen to 90 ℃, 25min is processed in insulation.Measuring this dyeing waste-water decolorizing rate is 91%.
Embodiment 4
Add the 8g/L Peracetic Acid in the reactive blue dye dyeing waste-water, wastewater temperature is risen to 95 ℃, 30min is processed in insulation.Measuring this dyeing waste-water decolorizing rate is 75%.
Claims (2)
1. a reactive dyed wastewater decoloring method, is characterized in that adopting following method: add the 2-8g/L Peracetic Acid in reactive dyed wastewater, wastewater temperature is risen to 90-95 ℃, insulation processing 25-30min.
2. in accordance with the method for claim 1, wherein Peracetic Acid is the mixed solution of being produced by sulfuric acid, hydrogen peroxide and Glacial acetic acid reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078136XA CN103145228A (en) | 2013-03-06 | 2013-03-06 | Method for decoloring wastewater dyed by active dye |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310078136XA CN103145228A (en) | 2013-03-06 | 2013-03-06 | Method for decoloring wastewater dyed by active dye |
Publications (1)
| Publication Number | Publication Date |
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| CN103145228A true CN103145228A (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310078136XA Pending CN103145228A (en) | 2013-03-06 | 2013-03-06 | Method for decoloring wastewater dyed by active dye |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0867667A (en) * | 1994-06-22 | 1996-03-12 | Nippon Peroxide Co Ltd | Aqueous solution containing perdicarboxylic acid |
| CN1166553A (en) * | 1996-04-12 | 1997-12-03 | 凯默夏尔公司 | Process for deflingification and/or bleaching of paper pulp |
| CN1583595A (en) * | 2004-06-14 | 2005-02-23 | 尹庚明 | Treating method for dyeing waste water with organic dye |
| CN101581035A (en) * | 2008-05-14 | 2009-11-18 | 哈尔滨理工大学 | Totally-chlorine-free bleaching technology of flax cloth or fibers |
| CN102557298A (en) * | 2012-01-06 | 2012-07-11 | 绍兴文理学院 | Method for decoloring printing and dyeing waste water of reactive dye |
-
2013
- 2013-03-06 CN CN201310078136XA patent/CN103145228A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0867667A (en) * | 1994-06-22 | 1996-03-12 | Nippon Peroxide Co Ltd | Aqueous solution containing perdicarboxylic acid |
| CN1166553A (en) * | 1996-04-12 | 1997-12-03 | 凯默夏尔公司 | Process for deflingification and/or bleaching of paper pulp |
| CN1583595A (en) * | 2004-06-14 | 2005-02-23 | 尹庚明 | Treating method for dyeing waste water with organic dye |
| CN101581035A (en) * | 2008-05-14 | 2009-11-18 | 哈尔滨理工大学 | Totally-chlorine-free bleaching technology of flax cloth or fibers |
| CN102557298A (en) * | 2012-01-06 | 2012-07-11 | 绍兴文理学院 | Method for decoloring printing and dyeing waste water of reactive dye |
Non-Patent Citations (1)
| Title |
|---|
| 罗灯洪等: "活性染色废水的均相催化臭氧脱色", 《印染》, no. 21, 15 November 2010 (2010-11-15) * |
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Application publication date: 20130612 |