CN1274609C - Treating method for dyeing waste water with organic dye - Google Patents
Treating method for dyeing waste water with organic dye Download PDFInfo
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- CN1274609C CN1274609C CN 200410027644 CN200410027644A CN1274609C CN 1274609 C CN1274609 C CN 1274609C CN 200410027644 CN200410027644 CN 200410027644 CN 200410027644 A CN200410027644 A CN 200410027644A CN 1274609 C CN1274609 C CN 1274609C
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Abstract
The present invention discloses a treating method for dyeing waste water of active dye. The method comprises the steps that dyeing waste water of active dye, which is discharged by a printing and dyeing system and has the temperature of 60 DEG C to 90 DEG C, is discharged into a heat preservation reaction tank; the pH value of the dyeing waste water is adjusted to 6 to 8; a catalyst and an oxidizing agent are added to the dyeing waste water of which the pH value is adjusted; and a reaction lasts for 5 to 60 minutes. In the method, the high efficiency catalytic oxydation of the dyeing waste water of active dye, which has high concentration, is directly realized; consequently, the chrominance and the COD of the dyeing waste water of active dye can be greatly reduced, the treatment burden of comprehensive waste water of printing and dyeing is greatly relieved, and the decolorization problem existing in printing and dyeing waste water, particularly waste water containing active dye, can be thoroughly solved. In the method, the heat energy of dyeing solution is fully used as the activation energy of a catalytic oxydation reaction, and extra heat energy does not need to be input into the dyeing solution so that the treatment cost of the dyeing waste water can be greatly reduced. The method is widely suitable for the treatment of the dyeing waste water of active dye in printing and dyeing industry.
Description
Technical field
The present invention relates to a kind of treatment process of dyeing waste water, particularly a kind of treatment process that contains the dyeing waste-water of reactive dyestuffs.
Background technology
The reactive dyestuffs lovely luster, chromatogram is complete, suitability is strong, is one of maximum dyestuff of dyeing usage quantity, accounts for 40% of cellulose fiber Wesy dyestuff.But its utilization ratio is low, and fixation rate generally has only 50-65%, and therefore chroma in waste water height, the biodegradability that is produced is relatively poor, the coagulating sedimentation effect is relatively poor, is one of difficult point in the treatment of dyeing wastewater.
The method of treatment of dyeing and printing has biochemical process, physico-chemical process, chemical method etc. both at home and abroad, the most frequently used is is the biochemistry-materialization combined method of masterization with biochemistry, this method technology is ripe, treatment effect is better, but the initial cost of treatment system is big, floor space is big, and running cost is higher, and relatively poor to the decolorizing effect that contains reactive dyestuffs (or water-soluble dye of other type) waste water.
And the method for chemical Treatment dyeing waste water is mainly oxidation treatment method, and it comprises three kinds of wet chemical oxidation, high temperature oxidation and photochemical catalysis oxidations.
Chemical oxidization method be with oxygenant (as ozone, clorox, dioxide peroxide, hydrogen peroxide, potassium permanganate etc.) directly with waste water in other reducing substances of dye well react, its percent of decolourization and COD clearance are all higher, but because the waste water water yield is big, make oxidation efficiency low, oxidation rate is slow, and dosage is big, the cost height, practical value is not high, therefore general few use.
High-temperature oxidation adopts pressurized air to make oxygenant, the oxidation efficiency height, medicament expense is low, but the temperature during high temperature oxidation is generally more than 200 ℃, and require system that certain pressure is arranged, so to the requirement height of equipment, processing condition are complicated, energy consumption is also high, thereby has been subjected to very big restriction in actual applications.
The photochemical catalysis oxidation style is a kind of new technology with frontier nature and latency development prospect, but because dyestuff itself has higher light stability, the catalyzer cost is higher in addition, and be subjected to the restriction of immobilization technology, the real contact area of catalyzer and waste water is limited, and oxidation efficiency is difficult for improving.
Dyeing waste water is made up of pretreated waste water, dyeing waste-water and poaching wastewater, though wherein dyeing waste-water only accounts for the 1/5-1/6 of dyeing waste water, and its colourity maximum (1000-10000 is doubly), the dense (COD of pollutent
CrBe about 500-4000mg/L), the principal pollutant great majority of dyeing waste water come from dyeing waste-water, therefore to dyeing waste-water whether individual curing is an important step that influences the treatment of dyeing wastewater quality.And above-mentioned treatment process all is at the printing and dyeing comprehensive wastewater, in the processing of the overwhelming majority's dyeing waste water, dyeing waste-water is not carried out pre-treatment, handle but pretreated waste water, dyeing waste-water and poaching wastewater are entered treatment system again after equalizing tank mixes.Like this, the pollutent of dyeing waste-water middle and high concentration is diluted, and intractability is increased greatly, and efficient reduces, and dosage strengthens, and processing cost rises.
Summary of the invention
An object of the present invention is to provide a kind of treatment process of dyeing waste-water, this method is directly carried out efficiently catalyzing and oxidizing to the reactive dyed wastewater of high density and is handled, can reduce the colourity and the COD of reactive dyed wastewater significantly, alleviate the processing burden of printing and dyeing comprehensive wastewater greatly, can thoroughly solve the decolouring difficult problem that dyeing waste water particularly contains active dye wastewater.
Another object of the present invention is to provide a kind of under the effect of catalyzer, utilizes the activation energy of the heat energy of dyeing waste-water as catalytic oxidation itself, to reach the minimizing dosage, reduces the treatment process of the dyeing waste-water of processing cost.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of treatment process of reactive dyed wastewater, this method comprises: at first the printing and dyeing system is discharged, temperature enters in the insulation reaction pond 60-90 ℃ reactive dyed wastewater; The pH value of regulating dyeing waste-water then is to 6-8; Add a kind of in the hydrochloride of the vitriol of copper, iron, manganese or copper, iron, manganese in the dyeing waste-water after regulating pH value, or two or more the mixture between them is as catalyzer, add sodium chlorate, clorox or hydrogen peroxide as oxygenant, reacted 5-60 minute.
The use of catalyzer can be selected different catalyzer according to different reactive dyestuffs, and when two or more different catalyst mix were used, its blending ratio can be arbitrarily.
Catalyst consumption can decide according to the colourity of dyeing waste-water, and when the chromaticity range of dyeing waste-water during at 1000-10000 times, the optimum amount of catalyzer is every liter of waste water of 0.5-2mg, when colourity increases, can increase catalyst consumption accordingly.
When the chromaticity range of dyeing waste-water at 1000-10000 doubly, the concentration of pollutent is (COD
Cr) when being about 500-4000mg/L, the optimum amount of oxygenant is every liter of waste water of 0.5-3g, when colourity and COD increase, can increase the consumption of oxygenant accordingly.
In said temperature, colourity and pollutent (COD) scope, the optimum reacting time of oxygenant in waste water is 10-20 minute.
The adjusting of pH value can be adopted conventional control method, as adopting the pH value of industrial caustic soda adjustment of acidity waste water, adopts industrial sulphuric acid to regulate the pH value of alkaline waste water.
The invention has the beneficial effects as follows: the present invention directly carries out catalytic oxidation treatment to the reactive dyed wastewater of high density, can significantly reduce the colourity and the COD of reactive dyed wastewater, alleviate the intractability of printing and dyeing comprehensive wastewater greatly, can thoroughly solve the decolouring difficult problem that dyeing waste water particularly contains active dye wastewater; The present invention makes full use of the activation energy of the heat energy of dye liquor as catalytic oxidation itself, need not therefore can reduce the processing cost of dyeing waste-water greatly to the heat energy outside the dye liquor amount of imports.
Treatment effect height of the present invention.Treatment effect with five kinds of reactive dyed wastewater (black dye liquor, Borland look dye liquor, blue dye liquor, garnet dye liquor and purplish red dye liquor) of adopting certain printing and dyeing mill that treatment process of the present invention handles is an example.The colourity of five kinds of dyeing waste-waters is at 1000-10000 times, COD
CrBetween 500-4000mg/L.Rise waste water at 60-80 ℃, catalyzer add-on 0.5-2mg/, oxygenant add-on 0.5-3g/ rises under the processing condition of waste water, reacted 10-20 minute, the result shows: the chroma in waste water after five kinds of dyeing waste-waters are handled is reduced to below 4 times, and percent of decolourization is between 98-99.5%; COD
CrReduce to 90-200mg/L, the COD clearance is 85-98%, if increase the consumption of oxygenant, COD
CrAll can reduce to below the 90mg/L.
The present invention is easy and simple to handle, can not produce secondary pollution, and the dyeing waste-water after the present invention handles can be used as a rinse water reuse.
The present invention is further described below in conjunction with embodiment.
Embodiment
Embodiment 1
The colourity that the printing and dyeing system is discharged is 8192 times, COD
CrFor 3220mg/L, temperature enter in the insulation reaction pond 80 ℃ reactive dyed wastewater; Regulate the pH value to 6 of dyeing waste-water; Add 2mg/ and rise the copper sulfate of waste water and the hydrogen peroxide that 3g/ rises waste water in dyeing waste-water, reacted 30 minutes, colourity is 4 times in the dyeing waste-water after the processing, COD
CrBe 120mg/L.
Embodiment 2
The colourity that the printing and dyeing system is discharged is 5652 times, COD
CrFor 1977mg/L, temperature enter in the insulation reaction pond 70 ℃ reactive dyed wastewater; Regulate the pH value to 7 of dyeing waste-water; Add 1.5mg/ and rise the manganous sulfate of waste water and the clorox that 2g/ rises waste water in dyeing waste-water, reacted 40 minutes, colourity is 4 times in the dyeing waste-water after the processing, COD
CrBe 90mg/L.
Embodiment 3
The colourity that the printing and dyeing system is discharged is 4000 times, COD
CrFor 826mg/L, temperature enter in the insulation reaction pond 70 ℃ reactive dyed wastewater; Regulate the pH value to 7 of dyeing waste-water; Add 1.5mg/ and rise the ferric sulfate of waste water and the hydrogen peroxide that 2g/ rises waste water in dyeing waste-water, reacted 15 minutes, colourity is 3 times in the dyeing waste-water after the processing, COD
CrBe 101mg/L.
Embodiment 4
The colourity that the printing and dyeing system is discharged is 1200 times, COD
CrFor 650mg/L, temperature enter in the insulation reaction pond 80 ℃ reactive dyed wastewater; Regulate the pH value to 8 of dyeing waste-water; Add 1mg/ and rise the Manganous chloride tetrahydrate of waste water and the sodium chlorate that 1g/ rises waste water in dyeing waste-water, reacted 20 minutes, colourity is 2 times in the dyeing waste-water after the processing, COD
CrBe 150mg/L.
Embodiment 5
The colourity that the printing and dyeing system is discharged is 1000 times, COD
CrFor 418mg/L, temperature enter in the insulation reaction pond 90 ℃ reactive dyed wastewater; Regulate the pH value to 7 of dyeing waste-water; Add 1.5mg/ and rise the cupric chloride of waste water and the clorox that 2g/ rises waste water in dyeing waste-water, reacted 10 minutes, colourity is 3 times in the dyeing waste-water after the processing, COD
CrBe 120mg/L.
Embodiment 6
The colourity that the printing and dyeing system is discharged is 10000 times, COD
CrFor 4726mg/L, temperature enter in the insulation reaction pond 80 ℃ reactive dyed wastewater; Regulate the pH value to 7 of dyeing waste-water; Add iron(ic) chloride and the mixture of copper sulfate and the sodium chlorate that 3g/ rises waste water that 1.5mg/ rises waste water in dyeing waste-water, reacted 30 minutes, colourity is 3 times in the dyeing waste-water after the processing, COD
CrBe 180mg/L.
Embodiment 7
The colourity that the printing and dyeing system is discharged is 1800 times, COD
CrFor 650mg/L, temperature enter in the insulation reaction pond 70 ℃ reactive dyed wastewater; Regulate the pH value to 7 of dyeing waste-water; Add 1.5mg/ and rise the mixture of Manganous chloride tetrahydrate, ferric sulfate and copper sulfate of waste water and the sodium chlorate that 3g/ rises waste water in dyeing waste-water, reacted 40 minutes, colourity is 4 times in the dyeing waste-water after the processing, COD
CrBe 100mg/L.
Claims (4)
1. the treatment process of a reactive dyed wastewater, this method comprises: at first the printing and dyeing system is discharged, temperature enters in the insulation reaction pond 60-90 ℃ reactive dyed wastewater; The pH value of regulating dyeing waste-water then is to 6-8; Add the vitriol of copper, iron, manganese or one or more the mixture in the hydrochloride in the dyeing waste-water after regulating pH value as catalyzer, add sodium chlorate, clorox or hydrogen peroxide, reacted 5-60 minute as oxygenant.
2. the treatment process of a kind of reactive dyed wastewater according to claim 1 is characterized in that the reaction times of described oxygenant in waste water is 10-20 minute.
3. the treatment process of a kind of reactive dyed wastewater according to claim 1 is characterized in that described catalyst consumption is that 0.5-2mg/ rises waste water.
4. the treatment process of a kind of reactive dyed wastewater according to claim 1, the consumption that it is characterized in that described oxygenant is that 0.5-3g/ rises waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027644 CN1274609C (en) | 2004-06-14 | 2004-06-14 | Treating method for dyeing waste water with organic dye |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410027644 CN1274609C (en) | 2004-06-14 | 2004-06-14 | Treating method for dyeing waste water with organic dye |
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| CN1583595A CN1583595A (en) | 2005-02-23 |
| CN1274609C true CN1274609C (en) | 2006-09-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436346C (en) * | 2006-11-16 | 2008-11-26 | 五邑大学 | Multiple phase catalytic oxidation-coagulation precipitation method for processing active dye printing waste water |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145228A (en) * | 2013-03-06 | 2013-06-12 | 青岛大学 | Method for decoloring wastewater dyed by active dye |
| CN104671501B (en) * | 2015-02-13 | 2016-06-22 | 威士邦（厦门）环境科技有限公司 | The process for cleanly preparing of a kind of washings high-quality reuse of dyeing and complete set of equipments |
| CN106477764A (en) * | 2015-09-02 | 2017-03-08 | 徐学文 | A kind of technique processing severe sewage decoloring |
| CN112811646B (en) * | 2020-12-24 | 2022-09-06 | 山东华氟化工有限责任公司 | Method for treating wastewater with high fluorine ions, high COD (chemical oxygen demand) and high chroma |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436346C (en) * | 2006-11-16 | 2008-11-26 | 五邑大学 | Multiple phase catalytic oxidation-coagulation precipitation method for processing active dye printing waste water |
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Assignee: JiangMen Wealth Environmental Protection Co., Ltd. Assignor: Yin Gengming|Kang Siqi|Tan Mingzhuo|Ma Xiaoou Contract fulfillment period: 2007.9.3 to 2013.9.2 contract change Contract record no.: 2009440001534 Denomination of invention: Treating method for dyeing waste water with organic dye Granted publication date: 20060913 License type: Exclusive license Record date: 20091010 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.9.3 TO 2013.9.2; CHANGE OF CONTRACT Name of requester: JIANGMEN WEALTH ENVIRONMENTAL PROTECTION CO.,LTD. Effective date: 20091010 |
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