CN104291398B - A kind of processing method recycling dyeing residual liquid - Google Patents
A kind of processing method recycling dyeing residual liquid Download PDFInfo
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- CN104291398B CN104291398B CN201410513949.1A CN201410513949A CN104291398B CN 104291398 B CN104291398 B CN 104291398B CN 201410513949 A CN201410513949 A CN 201410513949A CN 104291398 B CN104291398 B CN 104291398B
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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
- C02F1/00—Treatment of water, waste water, or sewage
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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Abstract
The present invention provides a kind of processing method recycling dyeing residual liquid, in adding organic liquor in acid dyeing residual liquid, makes the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；Dyeing residual liquid after desolventing technology carries out reuse according to dyeing.In the present invention, utilize organic liquor that dyeing residual liquid is carried out desolventing technology, make that the dyeing residual liquid colourity after desolventing technology is low, percent of decolourization is up to more than 99%；Simultaneously, also retains the salt in residual liquid, make the saliferous dyeing residual liquid after decolouring can be back to dyeing course, make use of the salt in dyeing residual liquid rationally and effectively, decrease the salt dosage in dyeing, avoid the discharge of high salt high chroma residual liquid, both saved production cost, and alleviated again the pressure of sewage disposal.
Description
Technical field
The present invention relates to dyeing waste water treatment technology, be specifically related to a kind of processing method recycling dyeing residual liquid.
Background technology
The dye that refers to dyeing residual liquid just terminates the dyeing waste-water discharged, and does not include wash water.In dyeing residual liquid, especially activity
Dyeing residual liquid, pollutant levels are high, and main component is the dyestuff and hydrolyzate thereof reacted the most completely, and as promoting
Stain and the soda of levelling agent and salt.This residual liquid saliferous 6%, colourity 4～50,000 times, it is difficult to degraded, is dyeing waste water
The difficult point administered.
Traditional printing-dyeing waste water treatment process is to be mixed by the waste water that the dyeing residual liquid of high salt produces with other production process, passes through
The method of dilution reduces colourity and the salinity of waste water, then is processed by materialization-biochemistry-advanced treatment process, this method
Technique is more ripe, but technique is more ripe, but investment is big, and operating cost is high, and effect is unstable.
The Sources controlling of production technology is the key of dyeing residual liquid resource.It is reported, high concentration vital staining residual liquid discharge
Salt accounts for the 50-80% of printing and dyeing production process, and the dyestuff discharged accounts for more than 90%.Salt and dyestuff are at dyeing waste water difficulty biochemistry
Reason and the major reason that can not recycle.By high concentration dyeing residual liquid individual processing, it is achieved the resource of dyeing residual liquid,
It is possible not only to reduce production cost so that the waste water of printing and dyeing enterprise processes and the recycled of waste water is simplified, moreover it is possible to allow printing and dyeing
Wastewater to reach standard processes even reuse and is more prone to.
Technology about treatment of dyeing wastewater mainly has following three kinds at present:
1, the recovery of a kind of reactive dyeing residual liquid and the method (CN102745761B) of utilization, relates to a kind of reactive dye
The colouring method of dyeing residual liquid recycling, the method utilizes a kind of dyestuff agent for capturing being called Color Clean as adsorbent to dye
Material residual liquid carries out adsorption treatment, obtains treatment fluid, and filters, and treatment fluid is further according to requiring supplementation with salt, and alkali and the water yield are allowed to reach
The concentration required to dyeing, then dye by dyeing.This invention utilizes salt (Matrii Sulfas Exsiccatus or chlorination in residual liquid
Sodium) and alkali, can make in dyeing course the consumption of salt alkali consumption reduce, efficiently solve the reluctant high salt of dye-works's sewage and ask
Topic, reduces the COD value in quantity of wastewater effluent and waste water, alleviates cost of sewage disposal.
2, a kind of method (CN102351268A) recycling sodium sulfate from dyeing wastewater, discloses one and recycles dye
The method of Matrii Sulfas Exsiccatus in color waste water, the dyeing waste-water containing Matrii Sulfas Exsiccatus is injected oil water separator by this invention, then by organic solvent
(methyl acetone, butanone, acetone, propanol or isopropanol) adds oil water separator, stirs 1-15min, stratification；So
After lower floor's Matrii Sulfas Exsiccatus aqueous solution is isolated, with acid for adjusting pH value, enter dyeing process recycling；Upper strata organic solvent, water
Organic solvent is reclaimed through solvent recovery machine with the mixed solution of dyestuff.The method can realize units a large amount of in printing and dyeing industry bright
Recycling of powder, salt-free waste water after treatment is conducive to follow-up decolored degradation to process, and solvent also can realize simultaneously
Entirely reclaim and recycle.
3, a kind of method (CN101955282B) of printing and dyeing enterprise height saliferous dyeing waste-water zero-emission, discloses a kind of printing and dyeing enterprise
The method of industry height saliferous dyeing waste-water zero-emission, waste water initially enters regulating reservoir homogenizing, subsequently into reaction tank, in reaction tank
Adding ferrous sulfate regulation pH value and coagulating occurs, after reaction, water outlet enters sedimentation tank precipitation, and sedimentation tank supernatant passes through
Electrochemical reactor processes, and removes scum silica frost and sediment subsequently into second-level settling pond, enters back into Aeration tank aeration, logical after aeration
Cross manganese sand filter iron removal by filtration；Water outlet after filtration first passes through ultrafiltration membrane treatment, and the dense water of ultrafilter membrane returns to regulating reservoir, fresh water
Enter nanofiltration membrane treatment；NF membrane output fresh water enters reverse osmosis membrane, output concentrate recirculation to regulating reservoir or direct evaporation and processes；
The dense water of reverse osmosis membrane enters electrodialyzer, and the backflow of electrodialysis fresh water is intake as reverse osmosis membrane, and the dense water of electrodialysis enters vaporizer
It is evaporated；The steam that evaporation produces can be back to printing and dyeing and produce, and the residue that evaporation produces is as disposition of solid waste；Whole
Water pollutant is not discharged during individual.
Above-mentioned three kinds of methods all can reach certain treatment effect, but comparatively speaking, have that processing cost is high, equipment is complicated,
The problems such as complex disposal process.
Therefore, there is a need to provide the processing method of a kind of new dyeing residual liquid, dyeing residual liquid can be carried out efficient decolorizing, make
Saliferous residual liquid after decolouring can reuse and dyeing course, alleviate the pressure of sewage disposal.
Summary of the invention
For solving the deficiencies in the prior art, the present invention proposes a kind of processing method recycling dyeing residual liquid.
The main thought of the present invention is: utilizes the dyestuff in organic liquor load dyeing residual liquid, carries out dyeing residual liquid at decolouring
Reason, retains the salt in dyeing residual liquid simultaneously, makes the dyeing residual liquid after decolouring can be back to dyeing course, reduces dyeing
The dosage of middle salt.Meanwhile, the present invention also utilizes alkali liquor to regenerate load organic liquor, makes organic liquor repeatedly to make
With.
In order to achieve the above object, the present invention provides a kind of processing method recycling dyeing residual liquid, in acid dyeing
Residual liquid adds organic liquor, makes the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is decoloured
Process；Dyeing residual liquid after desolventing technology carries out reuse according to dyeing.
In an embodiment of the present invention, the treating method comprises following steps:
(1) regulation dyeing residual liquid pH value, makes the pH value of dyeing residual liquid 1～4；
(2) in the dyeing residual liquid regulate pH value, add organic liquor, carry out desolventing technology；Then standing separation, it is thus achieved that negative
Carry organic liquor and reuse dyeing residual liquid；
(3) the reuse dyeing residual liquid that described step (2) obtains carries out reuse according to dyeing；
(4) in the load organic liquor that described step (2) obtains, add alkali liquor, make the dyestuff in described load organic liquor depart from and go forward side by side
Enter alkali liquor, thus obtain can the organic liquor of reuse, for the desolventing technology of the dyeing residual liquid described in step (2).
In a preferred embodiment of the present invention, described organic liquor is the mixture of reactant and diluent；Wherein, described reaction
Agent one in tributyl phosphate, trioctyl phosphate, trioctylphosphine oxygen phosphorus, trioctylamine, N235 and N503；Described dilute
Release agent one in common kerosene, aerial kerosene or sulfonated kerosene.
In a preferred embodiment of the present invention, described reactant is (2～4) with the volume ratio of described diluent: (6～8).
In a preferred embodiment of the present invention, in described step (2), described organic liquor adds described dyeing according to following ratio
In residual liquid: organic liquor is 1:(30～40 with the volume ratio of dyeing residual liquid).
In a preferred embodiment of the present invention, in described step (2), the process time of described desolventing technology is 30～60 minutes.
In a preferred embodiment of the present invention, in described step (2), the process time of described standing separation is 30～60 minutes.
In a preferred embodiment of the present invention, in described step (4), described alkali liquor is selected from sodium hydrate aqueous solution, hydroxide
One in aqueous solutions of potassium or aqueous sodium carbonate, mass concentration is 8～20%.
In a preferred embodiment of the present invention, in described step (4), described alkali liquor is loaded with described in the addition of following ratio
In machine liquid: alkali liquor is 1:(4～6 with the volume ratio of load organic liquor).
In a preferred embodiment of the present invention, in described step (4), described alkali liquor and the response time of described load organic liquor
It it is 10～30 minutes.
In a preferred embodiment of the present invention, it is provided that a kind of processing method recycling dyeing residual liquid, comprise the steps of
(1) regulation dyeing residual liquid pH value, makes the pH value of dyeing residual liquid 1～4；
(2) in the dyeing residual liquid regulate pH value, add organic liquor, carry out desolventing technology；Then standing separation, it is thus achieved that negative
Carry organic liquor and reuse dyeing residual liquid；Wherein,
Described organic liquor is 1:(30～40 according to the volume ratio of organic liquor Yu dyeing residual liquid) ratio, add described dyeing residual liquid
In；
Described organic liquor be reactant be (2～4) with diluent according to volume ratio: the mixture that (6～8) mix；
Described reactant selected from tributyl phosphate, trioctyl phosphate, trioctylphosphine oxygen phosphorus, trioctylamine, the one of N235 and N503
Kind；
Described diluent one in common kerosene, aerial kerosene or sulfonated kerosene；
(3) the reuse dyeing residual liquid that described step (2) obtains carries out reuse according to dyeing；
(4) in the load organic liquor that described step (2) obtains, add alkali liquor, make the dyestuff in described load organic liquor depart from and go forward side by side
Enter alkali liquor, thus obtain can the organic liquor of reuse, for the desolventing technology of the dyeing residual liquid described in step (2)；Wherein,
Described alkali liquor is 1:(4～6 according to the volume ratio of alkali liquor with load organic liquor) join in described load organic liquor；
Described alkali liquor one in sodium hydrate aqueous solution, potassium hydroxide aqueous solution or aqueous sodium carbonate, mass concentration
It is 8～20%.
In the above-described embodiments, the process time of the described desolventing technology in described step (2) is 30～60 minutes；Described step
(2) the process time of the described standing separation in is 30～60 minutes；And alkali liquor is organic with described load described in described step (4)
The response time of liquid is 10～30 minutes.
It should be noted that if no special instructions, the reagent related in the present invention is commercial reagent.
In the present invention, utilize organic liquor that dyeing residual liquid is carried out desolventing technology, make the dyeing residual liquid colourity after desolventing technology low,
Percent of decolourization is up to more than 99%.Meanwhile, the processing method of the present invention also retains the salt in residual liquid, make after decolouring containing salt dyeing
Residual liquid can be back to dyeing course, make use of the salt in dyeing residual liquid rationally and effectively, and the salt decreased in dyeing adds
Amount, it is to avoid the discharge of high salt high chroma residual liquid, had both saved production cost, had alleviated again the pressure of sewage disposal.Meanwhile,
The processing method of the present invention also utilizes alkali liquor to regenerate load organic liquor, makes organic liquor can be repeatedly used for desolventing technology,
Reduce the processing cost of dyeing residual liquid.
The invention have the benefit that
(1) present invention has the most economic effect, and the dyeing residual liquid higher for salt content and dye content individually takes off
Color processes, and percent of decolourization can reach 99%, the residual liquid after process can be back to dyeing, in recycling residual liquid
Salt, the value that residual liquid recycling per ton brings is up to more than 40 yuan；It addition, economy is also embodied in, utilize dyeing residual
The heat energy that fluid residual heat reduces takes, and the sewage discharge reduced because of residual liquid recycling takes and the fresh water rate of dyeing etc.；
(2) present invention has good environmental benefit, passes through residual liquid recycling, it is therefore prevented that a large amount of salt enter water body, emission reduction effect
Significantly.Simultaneously as a large amount of salt and dyestuff are trapped in source, therefore comprehensive wastewater processes and is more prone to realize row up to standard
Putting, particularly to the enterprise using membrane technology to carry out Treated sewage reusing, owing in waste water, salt content reduces, operating cost will be big
Width declines；
(3) present invention also has positive role in terms of reducing labor strength.At present, the salt in dyeing is all logical
Cross and manually add, by dyeing residual liquid is carried out reuse, it is possible to reduce every day several tons of the most up to a hundred tons of salt dosage band
The labor intensity come.
Detailed description of the invention
Being described in detail the present invention below in conjunction with embodiment, embodiment is intended to explain and non-limiting technical scheme.
Embodiment 1
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by dyeing residual liquid 6000ml, is slowly added to sulphuric acid, makes residual liquid pH value
It is 3～4.Tributyl phosphate and aerial kerosene 2:8 mix homogeneously by volume are obtained organic liquor, takes this organic liquor 200ml and add
Enter to regulate the dyeing residual liquid of pH is carried out desolventing technology, stand 30min after reaction 30min, separate respectively at lower floor's decolouring
Reason is followed by subdiaphanous dyeing residual liquid and is loaded with the load organic liquor of dyestuff.Adding mass concentration in load organic liquor is
The sodium hydroxide solution 35ml of 20%, after reaction 30min, the dyestuff being carried in organic liquor enters in sodium hydroxide solution,
Organic liquor is regenerated, and can be cycled to used in the process of dyeing residual liquid.
Hereinafter, applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible.
Dyeing recipe is:
Bath raio 1:13, the textile two-sided half-bleached shirting of 60 DEG C × 60min 36S
Staining evaluation result is, aberration △ E:0.19, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Effect can accept.
Embodiment 2
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by dyeing residual liquid 6000ml, is slowly added to sulphuric acid, makes residual liquid pH value
It is 3～4.Trioctyl phosphate and aerial kerosene 3:7 mix homogeneously by volume are obtained organic liquor, takes this organic liquor 160ml and add
Enter to regulate the dyeing residual liquid of pH is carried out desolventing technology, stand 45min after reaction 45min, separate respectively at lower floor's decolouring
Connecing subdiaphanous dyeing residual liquid and being loaded with the load organic liquor of dyestuff after reason.Adding mass concentration in load organic liquor is
The potassium hydroxide solution 40ml of 15%, after reaction 20min, the dyestuff being carried in organic liquor enters in potassium hydroxide solution,
Organic liquor is regenerated, and can be cycled to used in the process of dyeing residual liquid.
Applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible, and dyeing recipe is same as in Example 1.
Staining evaluation result is, aberration △ E:0.15, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Chromatic effect can accept.
Embodiment 3
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by residual liquid 6000ml, is slowly added to sulphuric acid, and making residual liquid pH value is 3～4.
Trioctylphosphine oxygen phosphorus and sulfonated kerosene 4:6 mix homogeneously by volume are obtained organic liquor, takes the addition of this organic liquor 150ml and regulate pH
Dyeing residual liquid in carry out desolventing technology, stand 60min after reaction 60min, separate respectively after lower floor's desolventing technology close to nothing
The dyeing residual liquid of color and the load organic liquor being loaded with dyestuff.The sodium carbonate that mass concentration is 10% is added molten in load organic liquor
Liquid 30ml, after reaction 30min, the dyestuff being carried in organic liquor enters in sodium carbonate liquor, and organic liquor is regenerated, permissible
It is cycled to used in the process of dyeing residual liquid；
Applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible, and dyeing recipe is same as in Example 1.
Staining evaluation result is, aberration △ E:0.26, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Chromatic effect can accept.
Embodiment 4
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by residual liquid 6000ml, is slowly added to sulphuric acid, make residual liquid pH value be 3～
4.Trioctylphosphine oxygen phosphorus and common kerosene 3:7 mix homogeneously by volume are obtained organic liquor, takes this organic liquor 160ml and add regulation
The dyeing residual liquid of good pH carries out desolventing technology, after reaction 60min, stands 60min, after separating lower floor's desolventing technology respectively
Connect subdiaphanous dyeing residual liquid and be loaded with the load organic liquor of dyestuff.Adding mass concentration in load organic liquor is the hydrogen of 8%
Potassium oxide solution 40ml, after reaction 10min, the dyestuff being carried in organic liquor enters in potassium hydroxide solution, and organic liquor obtains
With regeneration, the process of dyeing residual liquid can be cycled to used in.
Applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible, and dyeing recipe is same as in Example 1.
Staining evaluation result is, aberration △ E:0.31, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Chromatic effect can accept.
Embodiment 5
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by residual liquid 6000ml, is slowly added to sulphuric acid, make residual liquid pH value be 3～
4.Tributyl phosphate and common kerosene 3:7 mix homogeneously by volume are obtained organic liquor, takes this organic liquor 150ml and add regulation
The dyeing residual liquid of good pH carries out desolventing technology, after reaction 45min, stands 45min, after separating lower floor's desolventing technology respectively
Connect subdiaphanous dyeing residual liquid and be loaded with the load organic liquor of dyestuff.Adding mass concentration in load organic liquor is 15%
Sodium hydroxide solution 30ml, after reaction 15min, the dyestuff being carried in organic liquor enters in sodium hydroxide solution, organic liquor
It is regenerated, the process of dyeing residual liquid can be cycled to used in.
Applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible, and dyeing recipe is same as in Example 1.
Staining evaluation result is, aberration △ E:0.22, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Chromatic effect can accept.
Embodiment 6
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by residual liquid 6000ml, is slowly added to sulphuric acid, make residual liquid pH value be 3～
4.Trioctyl phosphate and sulfonated kerosene 2:8 mix homogeneously by volume are obtained organic liquor, takes this organic liquor 200ml and add regulation
The dyeing residual liquid of good pH carries out desolventing technology, after reaction 30min, stands 30min, after separating lower floor's desolventing technology respectively
Connect subdiaphanous dyeing residual liquid and be loaded with the load organic liquor of dyestuff.Adding mass concentration in load organic liquor is 10%
Sodium hydroxide solution 50ml, after reaction 20min, the dyestuff being carried in organic liquor enters in sodium hydroxide solution, organic liquor
It is regenerated, the process of dyeing residual liquid can be cycled to used in.
Applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible, and dyeing recipe is same as in Example 1.
Staining evaluation result is, aberration △ E:0.28, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Chromatic effect can accept.
Embodiment 7
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by residual liquid 6000ml, is slowly added to sulphuric acid, make residual liquid pH value be 1～
2.Trioctylamine and common kerosene 3:7 mix homogeneously by volume are obtained organic liquor, takes the addition of this organic liquor 160ml and regulate pH
Dyeing residual liquid in carry out desolventing technology, stand 60min after reaction 60min, separate respectively after lower floor's desolventing technology close to nothing
The dyeing residual liquid of color and the load organic liquor being loaded with dyestuff.Adding mass concentration in load organic liquor is the hydroxide of 15%
Sodium solution 40ml, after reaction 10min, the dyestuff being carried in organic liquor enters in sodium hydroxide solution, and organic liquor is able to again
Raw, the process of dyeing residual liquid can be cycled to used in.
Applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible, and dyeing recipe is same as in Example 1.
Staining evaluation result is, aberration △ E:0.16, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Chromatic effect can accept.
Embodiment 8
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by residual liquid 6000ml, is slowly added to sulphuric acid, make residual liquid pH value be 2～
3.N235 and common kerosene 3:7 mix homogeneously by volume are obtained organic liquor, takes the addition of this organic liquor 150ml and regulate pH
Dyeing residual liquid in carry out desolventing technology, stand 45min after reaction 45min, separate respectively after lower floor's desolventing technology close to nothing
The dyeing residual liquid of color and the load organic liquor being loaded with dyestuff.Adding mass concentration in load organic liquor is the hydroxide of 15%
Potassium solution 30ml, after reaction 15min, the dyestuff being carried in organic liquor enters in potassium hydroxide solution, and organic liquor is able to again
Raw, the process of dyeing residual liquid can be cycled to used in.
Applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible, and dyeing recipe is same as in Example 1.
Staining evaluation result is, aberration △ E:0.26, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Chromatic effect can accept.
Embodiment 9
The present embodiment provides a kind of processing method recycling dyeing residual liquid, adds organic liquor in the dyeing residual liquid in acidity,
Make the substance that show color in dyeing residual liquid be separated in organic liquor, thus dyeing residual liquid is carried out desolventing technology；After desolventing technology
Dyeing residual liquid carries out reuse according to dyeing.
Described method, particularly as follows: be collected in reactor by residual liquid 6000ml, is slowly added to sulphuric acid, make residual liquid pH value be 3～
4.N503 and sulfonated kerosene 2:8 mix homogeneously by volume are obtained organic liquor, takes the addition of this organic liquor 200ml and regulate pH
Dyeing residual liquid in carry out desolventing technology, stand 30min after reaction 30min, separate respectively after lower floor's desolventing technology close to nothing
The dyeing residual liquid of color and the load organic liquor being loaded with dyestuff.Adding mass concentration in load organic liquor is the hydroxide of 10%
Sodium solution 50ml, after reaction 20min, the dyestuff being carried in organic liquor enters in sodium hydroxide solution, and organic liquor is able to again
Raw, the process of dyeing residual liquid can be cycled to used in.
Applicant carries out reuse to the dyeing residual liquid after decolouring, verifies that its reuse is the most feasible, and dyeing recipe is same as in Example 1.
Staining evaluation result is, aberration △ E:0.30, acceptable；Cloth cover level-dyeing property: slight color flower, acceptable.Overall dye
Chromatic effect can accept.
In the present invention, utilize organic liquor that dyeing residual liquid is carried out desolventing technology, make the dyeing residual liquid colourity after desolventing technology low,
Percent of decolourization is up to more than 99%.Meanwhile, the processing method of the present invention also retains the salt in residual liquid, make after decolouring containing salt dyeing
Residual liquid can be back to dyeing course, make use of the salt in dyeing residual liquid rationally and effectively, and the salt decreased in dyeing adds
Amount, it is to avoid the discharge of high salt high chroma residual liquid, had both saved production cost, had alleviated again the pressure of sewage disposal.Meanwhile,
The processing method of the present invention also utilizes alkali liquor to regenerate load organic liquor, makes organic liquor can be repeatedly used for desolventing technology,
Reduce the processing cost of dyeing residual liquid.
The present invention is been described by by above-mentioned related embodiment, but above-described embodiment is only the example implementing the present invention.Required
It is noted that published embodiment is not limiting as the scope of the present invention.On the contrary, be contained in claims spirit and
The amendment of scope and equalization arrange and are all included in the scope of the present invention.
Claims (2)
1. the processing method recycling dyeing residual liquid, it is characterised in that the treating method comprises following step
Rapid:
(1) regulation dyeing residual liquid pH value, makes the pH value of dyeing residual liquid 1～4；
(2) in the dyeing residual liquid regulate pH value, add organic liquor, carry out desolventing technology；Then standing separation,
Obtain load organic liquor and reuse dyeing residual liquid；
(3) the reuse dyeing residual liquid that described step (2) obtains carries out reuse according to dyeing；
(4) in the load organic liquor that described step (2) obtains, add alkali liquor, make the dyestuff in described load organic liquor take off
From and enter alkali liquor, thus obtain can the organic liquor of reuse, for the decolouring of the dyeing residual liquid described in step (2)
Process；Wherein,
In described step (2), described organic liquor is reactant with diluent by volume for (2～4): (6～8) mix
Form, described reactant one in tributyl phosphate, trioctyl phosphate, trioctylphosphine oxygen phosphorus；Described dilute
Release agent one in common kerosene, aerial kerosene or sulfonated kerosene；Further, described organic liquor is according to following
Ratio adds in described dyeing residual liquid: described organic liquor is 1:(30～40 with the volume ratio of dyeing residual liquid)；
In described step (4), described alkali liquor adds in described load organic liquor according to following ratio: alkali liquor and load
The volume ratio of organic liquor is 1:(4～6)；
In described step (2), the process time of described desolventing technology is 30～60 minutes；
In described step (2), the process time of described standing separation is 30～60 minutes；
In described step (4), described alkali liquor is 10～30 minutes with the response time of described load organic liquor.
2. processing method as claimed in claim 1, it is characterised in that in described step (4), described alkali liquor selects
One in sodium hydrate aqueous solution, potassium hydroxide aqueous solution or aqueous sodium carbonate, mass concentration be 8～
20%.
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| CN105002760A (en) * | 2015-06-02 | 2015-10-28 | 河海大学 | Method and device for recycling saline water in printing and dyeing process based on ozone decoloring |
| CN105084436B (en) * | 2015-08-20 | 2018-05-29 | 北京惠宇乐邦环保科技有限公司 | A kind of application of the recycle-water that efficient decolorizing of printing waste water obtains in printcloth washing process |
| CN105753130B (en) * | 2016-03-14 | 2019-05-24 | 浙江丝科院轻纺材料有限公司 | A method of dyes in dyeing waste water is captured by additive of organic acid |
| CN106082529A (en) * | 2016-06-13 | 2016-11-09 | 山东如意数码科技印染有限公司 | A kind for the treatment of method of printing and dying wastewater and processing equipment |
| CN107352677A (en) * | 2017-07-05 | 2017-11-17 | 山东如意科技集团有限公司 | The decoloration process and decolouring system of a kind of reactive dyeing raffinate |
| CN107235594A (en) * | 2017-07-05 | 2017-10-10 | 山东如意科技集团有限公司 | A kind of utilization process and system of reactive dyeing raffinate |
| CN114538711A (en) * | 2022-03-03 | 2022-05-27 | 华南理工大学 | Microbial degradation treatment method for Maotai-flavor liquor wastewater |
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