CN109455842A - A kind of efficient decolorizing technique of the organic solvent containing dyestuff - Google Patents
A kind of efficient decolorizing technique of the organic solvent containing dyestuff Download PDFInfo
- Publication number
- CN109455842A CN109455842A CN201811343961.7A CN201811343961A CN109455842A CN 109455842 A CN109455842 A CN 109455842A CN 201811343961 A CN201811343961 A CN 201811343961A CN 109455842 A CN109455842 A CN 109455842A
- Authority
- CN
- China
- Prior art keywords
- organic solvent
- colloid
- dyestuff
- technique
- decoloration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000975 dye Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000003960 organic solvent Substances 0.000 title claims abstract description 48
- 239000000084 colloidal system Substances 0.000 claims abstract description 33
- 238000005189 flocculation Methods 0.000 claims abstract description 31
- 230000016615 flocculation Effects 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000004927 clay Substances 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 17
- 150000003839 salts Chemical class 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 150000007529 inorganic bases Chemical class 0.000 claims abstract description 8
- 230000001376 precipitating effect Effects 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000013019 agitation Methods 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910021577 Iron(II) chloride Inorganic materials 0.000 claims description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 2
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 229940113088 dimethylacetamide Drugs 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000004210 ether based solvent Substances 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- 239000002608 ionic liquid Substances 0.000 claims description 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 claims description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 159000000003 magnesium salts Chemical class 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 239000003086 colorant Substances 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 21
- 238000004042 decolorization Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000013329 compounding Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 238000004043 dyeing Methods 0.000 description 30
- 239000002351 wastewater Substances 0.000 description 7
- 239000012457 nonaqueous media Substances 0.000 description 6
- 238000004064 recycling Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000010907 mechanical stirring Methods 0.000 description 4
- 239000013557 residual solvent Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009790 rate-determining step (RDS) Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of efficient decolorizing technique of organic solvent containing dyestuff, which stirs evenly, obtains flocculation decoloration colloid the following steps are included: (1) is soluble in water by inorganic metal salt and inorganic base；(2) under agitation, the flocculation decoloration colloid is added in the organic solvent containing dyestuff, so that the flocculation decoloration colloid inhales color precipitating.The technique prepares flocculation decoloration colloid by the way of mixing inorganic metal salt compounding inorganic base, and using the dyestuff in the charge attraction flocculation organic solvent between the flocculation decoloration colloid and dyestuff, flocculent gel natural subsidence under the effect of gravity completes the decoloration of solvent；In conjunction with the filters pressing and drying of clay, the percent of decolourization of the organic solvent containing dyestuff is up to 90% or more (90-98%), and the rate of recovery of organic solvent is close to 100%.The technological operation provided by the present invention is simple, and process energy conservation environmental protection, material is cheap and easy to get, is conducive to industrialization promotion.
Description
Technical field
The present invention relates to a kind of efficient decolorizing techniques of organic solvent containing dyestuff, belong to dyeing and finishing technique field.
Background technique
Textile printing and dyeing industry is that water consumption is big, one of the industrial department that discharge of wastewater is more.According to statistics, China's printing and dyeing enterprise
The wastewater flow rate discharged daily is up to 3,000,000-400 ten thousand tons, and the wherein high chroma, high organic content of generation during dyeing
Dyeing waste-water accounting is maximum.The reason is that inevitably causing hydrolysis situation in dyestuff water-bath dyeing course, leading to 30%-
50% dyestuff remains in dyeing waste-water.These dyeing waste-waters either pollution level or processing difficulty is all higher, is current
Perplex a great problem of dyeing development.
With the gradually reinforcement of the environmental regulation increasingly in short supply and domestic and international, environmental consciousness of water resource, dyeing waste water is reduced
It generates, develops non-aqueous media dyeing, become a general orientation of textile industry industrial transformation.Wherein critical carbon dioxide dyeing and it is non-
Aqueous solvent dyeing is two general orientation of non-aqueous media dyeing: critical carbon dioxide, which dyes, at home and abroad has more research, but by
In thering is larger limitation and dyeing installation operation to need super-pressure dyestuff used and contaminated fiber, lead to answering for the technology
It can not be promoted with range, industrialization process is slow；Non-aqueous media solvent dyeing is primarily referred to as that solvent is used to substitute water as dyeing
Medium, avoids the hydrolysis of dyestuff in dyeing course, to realize the high usage of dyestuff and the high colour-fast rate of fabric.Due to dye
Water is not used during color, and dyes and finishes nonaqueous solvents whole recycling and reusing, so in the process without dyeing waste-water, waste liquid
It generates.
17 unit consolidations such as Yida Textile Co., Ltd and Zhejiang University assume responsibility for " the crucial skill of non-aqueous media dyeing
Art research and production demonstration " state key researches and develops planning item, and wherein Yida Textile Co., Ltd is responsible for the " pole of exploitation
Property/nonpolarity binary non-aqueous media dyeing key technology " come into the industrialization propulsion phase.Solvent after the completion of dyeing returns
Find although dyes utilization rate is more than 95%, but still there is a small amount of dyestuff to remain in dicyandiamide solution in receipts.Residual dye pair
Solvent recovery recycles and dyeing cycle stability, all causes to seriously affect, needs to try to remove.
Existing solvent decoloration recovery process mainly has extraction, rectification method, film filtering etc., there are certain drawbacks:
Extraction is used in a solvent, and dyestuff, still with a certain concentration than being distributed, can not be removed efficiently, and commonly use organic in the mixed solvent
Extractant cannot be separated from solvent completely, to become new impurity, increase the difficulty of solvent recovery；Rectification method can be complete
Full removal dyestuff, but heating expends mass energy in the process, and the rate of recovery of equipment can not break through 95% at present, and solvent loss is not
Only economic cost is caused to increase, also results in environmental pollution；The film of organic solvent is filtered usually using inorganic ceramic membrane, dyestuff
Grain be easy to cause Pore Blocking, and film backwash and regeneration difficulty is big, and dye particle used in dyeing course differs greatly, mixing
The film that dyestuff is not available single aperture efficiently removes.
The removal of residual dye in dyeing solvent becomes a great problem for hindering non-aqueous media solvent dyeing development.This hair
Bright content is intended to develop a kind of efficient decolorizing technique to the organic solvent containing dyestuff, solves the decoloration in solvent recovery process
Problem.
Summary of the invention
In order to solve the above shortcomings and deficiencies, the purpose of the present invention is to provide a kind of height of organic solvent containing dyestuff
Imitate decoloration process.
In order to achieve the above objectives, the present invention provides a kind of efficient decolorizing technique of organic solvent containing dyestuff, wherein described
Technique the following steps are included:
(1) inorganic metal salt and inorganic base is soluble in water, it stirs evenly, obtains flocculation decoloration colloid；
(2) under agitation, the flocculation decoloration colloid is added in the organic solvent containing dyestuff, so that the wadding
Solidifying decoloration colloid inhales color precipitating.
Specific embodiment according to the present invention, this contains the efficient decolorizing technique of the organic solvent of dyestuff further include: to step
(2) acquired solution is stood or is centrifuged.
Wherein, stand or centrifugally operated purpose be separation flocculation decoloration colloid inhale color precipitating after gained precipitating clay and on
Clear liquid.
Specific embodiment according to the present invention, this contains the efficient decolorizing technique of the organic solvent of dyestuff further include: to step
(2) acquired solution is filtered to separate gained after flocculation decoloration colloid inhales color precipitating and precipitate clay and supernatant, then heavy to this
Shallow lake clay carries out filters pressing and drying, and carries out condensing recovery to steam obtained by drying course.
Specific embodiment according to the present invention, it is described organic in the efficient decolorizing technique of the organic solvent containing dyestuff
Solvent include N,N-dimethylformamide, DMAC N,N' dimethyl acetamide, dimethyl sulfoxide, ionic liquid, alcohol ether solvents, alkane,
Combination containing one or more of chloro-alkenes, aromatic hydrocarbons, ketone, esters, ethers and alcohols；
Preferably, the alkane includes containing enpara.
Specific embodiment according to the present invention, in the efficient decolorizing technique of the organic solvent containing dyestuff, with organic molten
The total volume of agent is calculating benchmark, and the concentration of dyestuff is 0.01-10g/L in the organic solvent containing dyestuff.
Specific embodiment according to the present invention, it is described inorganic in the efficient decolorizing technique of the organic solvent containing dyestuff
Metal salt includes the combination of one or more of molysite, ferrous salt, magnesium salts and mantoquita；
Preferably, the inorganic metal salt includes Fe2(SO4)3、FeCl3、FeSO4、FeCl2、MgSO4、MgCl2One of
Or several combination.
Specific embodiment according to the present invention, in the efficient decolorizing processing step (1) of the organic solvent containing dyestuff, institute
It is 6.5-7.5 with the pH value of water.
Specific embodiment according to the present invention, in the efficient decolorizing technique of the organic solvent containing dyestuff, with the water
Total volume be calculating benchmark, the dosage of the inorganic metal salt is 10-200g/L.
Specific embodiment according to the present invention, it is described inorganic in the efficient decolorizing technique of the organic solvent containing dyestuff
Alkali includes Na2CO3、NaOH、K2CO3、KOH、CaCO3And Ca (OH)2One or more of combination.
Specific embodiment according to the present invention, in the efficient decolorizing technique of the organic solvent containing dyestuff, with the water
Total volume be calculating benchmark, the dosage of the inorganic base is 5-100g/L.
Specific embodiment according to the present invention, in the efficient decolorizing processing step (2) of the organic solvent containing dyestuff, often
The dosage for rising the corresponding flocculation decoloration colloid of organic solvent containing dyestuff is 5mL-150mL.
It is provided by the present invention this contain the organic solvent of dyestuff efficient decolorizing technique it is pre- by using a small amount of water first
Flocculation decoloration colloid is produced, and controls the charge ratio of flocculation decoloration colloid (the application mainly passes through inorganic metal salt and inorganic
The usage ratio of alkali adjusts the charge ratio of control flocculation decoloration colloid, secondly also needs water used in material in rate-determining steps (1)
Acid-base property close to neutrality, i.e., the pH value of water used is 7 or so), then directly distributed it under mechanical agitation containing dye
In the organic solvent of material.Wherein, prefabricated flocculation decoloration colloid has had charge neutrality property, prints and dyes in the prior art without experience
The generating process of hydroxide metal ion in wastewater treatment process；Further, since the aquation of colloid, is dispersed in organic molten
Colloid in agent carries certain density moisture, and mechanical stirring is carried out during charging, this part water entrained by colloid
Ionize the dyestuff close to colloidal dispersion, charge neutrality absorption occurs for colloid and dyestuff at this time, completes the decoloration of solvent.
Provided by the present invention this contains the efficient decolorizing technique of the organic solvent of dyestuff using mixing inorganic metal salt compounding
The mode of inorganic base prepares flocculation decoloration colloid, utilizes the charge attraction flocculation organic solvent between the flocculation decoloration colloid and dyestuff
In dyestuff, flocculent gel natural subsidence under the effect of gravity completes the decoloration of solvent；In conjunction with the filters pressing and drying of clay, containing dye
The percent of decolourization of the organic solvent of material is up to 90% or more (90-98%), and the rate of recovery of organic solvent is close to 100%.Institute of the present invention
The technological operation provided is simple, and process energy conservation environmental protection, material is cheap and easy to get, is conducive to industrialization promotion.
Specific embodiment
In order to which technical characteristic of the invention, purpose and beneficial effect are more clearly understood, now in conjunction in detail below
Embodiment carries out following detailed description to technical solution of the present invention, but should not be understood as the limit to enforceable range of the invention
It is fixed.
Embodiment 1
Present embodiments provide a kind of efficient decolorizing technique of organic solvent containing dyestuff, wherein the technique includes following
Step:
4g FeCl is weighed respectively2、6g MgCl2、2g MgSO4It with 4g KOH, is dissolved in 140mL water, stirs evenly, be made
Flocculation decoloration colloid；
The dyeing residual solvent that measurement 3L Yellow containing L-Brilliant CA dye strength is 0.5g/L, mechanical stirring,
It is slowly uniformly added into made flocculation decoloration colloid, persistently stirs 30min, stands for 24 hours, filters out supernatant and clay, clay filters pressing
Solid content is 30% afterwards, dries clay condensing recovery steam；Whole solvents are collected, dye strength is reduced to 0.01g/L, containing dyestuff
The percent of decolourization of organic solvent is up to 98%；Removal introduce water, recycling design total amount (after supernatant, clay filters pressing gained liquid and
The total amount of the condensed liquid of steam) it is 2.97L, the rate of recovery of organic solvent is 99.0%.
Embodiment 2
Present embodiments provide a kind of efficient decolorizing technique of organic solvent containing dyestuff, wherein the technique includes following
Step:
4g FeCl is weighed respectively2、8g MgCl2It with 4g NaOH, is dissolved in 160mL water, stirs evenly obtained flocculation decoloration
Colloid；
The dyeing residual solvent that 3L Red containing SE dye strength is 0.6g/L is measured, mechanical stirring is slowly uniformly added into institute
Flocculation decoloration colloid processed persistently stirs 30min, stands for 24 hours, filters out supernatant and clay, and solid content is 35% after clay filters pressing,
Dry clay condensing recovery steam；Whole solvents are collected, dye strength is reduced to 0.01g/L, the decoloration of the organic solvent containing dyestuff
Rate is up to 98.3%；Removal introduces water, and recycling design total amount is 2.98L, and the rate of recovery of organic solvent is 99.3%.
Embodiment 3
Present embodiments provide a kind of efficient decolorizing technique of organic solvent containing dyestuff, wherein the technique includes following
Step:
8g FeCl is weighed respectively2、4g MgCl2、2g MgSO4It with 5g NaOH, is dissolved in 160mL water, stirs evenly obtained
Flocculation decoloration colloid；
The dyeing residual solvent that 3L Supra containing Sumifix Br.Red 3BF dye strength is 3g/L is measured, machinery stirs
It mixes, is slowly uniformly added into made flocculation decoloration colloid, persistently stir 30min, stand 48h, filter out supernatant and clay, clay pressure
Solid content is 20% after filter, dries clay condensing recovery steam；Whole solvents are collected, dye strength is reduced to 0.05g/L, contains dyestuff
Organic solvent percent of decolourization up to 98.3%；Removal introduces water, and recycling design total amount is 2.95L, the rate of recovery of organic solvent
It is 98.3%.
Embodiment 4
Present embodiments provide a kind of efficient decolorizing technique of organic solvent containing dyestuff, wherein the technique includes following
Step:
2g Fe is weighed respectively2(SO4)3、6g MgCl2、2g MgSO4With 3g NaOH, 3gKOH, it is dissolved in 120mL water, stirs
Mix uniformly obtained flocculation decoloration colloid；
The dyeing residual solvent that 3L Blue containing EVERZOL LX dye strength is 0.5g/L is measured, mechanical stirring is slowly equal
It is even that made flocculation decoloration colloid is added, 30min is persistently stirred, stands for 24 hours, filters out supernatant and clay, containing solid after clay filters pressing
Amount is 35%, dries clay condensing recovery steam；Whole solvents are collected, dye strength is reduced to 0.01g/L, organic molten containing dyestuff
The percent of decolourization of agent is up to 98%；Removal introduces water, and recycling design total amount is 2.98L, and the rate of recovery of organic solvent is 99.3%.
The present invention is described by way of example above, but the present invention is not limited to examples detailed above, as long as being based on this hair
Any changes or modifications that bright content is done belong to present invention content claimed.
Claims (10)
1. a kind of efficient decolorizing technique of the organic solvent containing dyestuff, which is characterized in that the technique the following steps are included:
(1) inorganic metal salt and inorganic base is soluble in water, it stirs evenly, obtains flocculation decoloration colloid；
(2) under agitation, the flocculation decoloration colloid is added in the organic solvent containing dyestuff, so that the flocculation is de-
Coloring agent body inhales color precipitating.
2. technique according to claim 1, which is characterized in that the technique further include: carried out to step (2) acquired solution quiet
It sets or is centrifuged.
3. technique according to claim 2, which is characterized in that the technique further include: carried out to step (2) acquired solution
Filter precipitates clay and supernatant to separate gained after flocculation decoloration colloid inhales color precipitating, then carries out filters pressing and baking to the precipitating clay
It is dry, and condensing recovery is carried out to steam obtained by drying course.
4. technique according to claim 1-3, which is characterized in that the organic solvent includes N, N- dimethyl methyl
Amide, dimethyl sulfoxide, ionic liquid, alcohol ether solvents, alkane, contains chloro-alkenes, aromatic hydrocarbons, ketone, ester at DMAC N,N' dimethyl acetamide
The combination of one or more of class, ethers and alcohols；
Preferably, the alkane includes containing enpara.
5. technique according to claim 1-3, which is characterized in that with the total volume of organic solvent be calculate base
Standard, the concentration of dyestuff is 0.01-10g/L in the organic solvent containing dyestuff.
6. technique according to claim 1-3, which is characterized in that the inorganic metal salt includes molysite, ferrous iron
The combination of one or more of salt, magnesium salts and mantoquita；
Preferably, the inorganic metal salt includes Fe2(SO4)3、FeCl3、FeSO4、FeCl2、MgSO4、MgCl2One of or it is several
The combination of kind；
It is further preferred that the pH value of water used is 6.5-7.5 in step (1).
7. technique according to claim 1-3, which is characterized in that using the total volume of the water as calculating benchmark,
The dosage of the inorganic metal salt is 10-200g/L.
8. technique according to claim 1-3, which is characterized in that the inorganic base includes Na2CO3、NaOH、
K2CO3、KOH、CaCO3And Ca (OH)2One or more of combination.
9. technique according to claim 1-3, which is characterized in that using the total volume of the water as calculating benchmark,
The dosage of the inorganic base is 5-100g/L.
10. technique according to claim 1-3, which is characterized in that in step (2), containing dyestuff described in every liter
The dosage of the corresponding flocculation decoloration colloid of organic solvent is 5mL-150mL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811343961.7A CN109455842B (en) | 2018-11-13 | 2018-11-13 | Efficient decoloring process for dye-containing organic solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811343961.7A CN109455842B (en) | 2018-11-13 | 2018-11-13 | Efficient decoloring process for dye-containing organic solvent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109455842A true CN109455842A (en) | 2019-03-12 |
| CN109455842B CN109455842B (en) | 2021-09-10 |
Family
ID=65610208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811343961.7A Active CN109455842B (en) | 2018-11-13 | 2018-11-13 | Efficient decoloring process for dye-containing organic solvent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109455842B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499853A (en) * | 2020-10-23 | 2021-03-16 | 广东溢达纺织有限公司 | Method for recycling hydrolyzed dye in dyeing wastewater |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336335A (en) * | 2000-07-29 | 2002-02-20 | 詹伯君 | Decoloring coagulant of composite iron salt |
| CN1792853A (en) * | 2005-11-17 | 2006-06-28 | 上海交通大学 | Combined treating process for waste water of basic printing and dyeing |
| JP2011016048A (en) * | 2009-07-07 | 2011-01-27 | Act Co Ltd | Method of decoloring and purifying wastewater containing lignin and/or tannin |
| JP4840330B2 (en) * | 2006-11-14 | 2011-12-21 | コニカミノルタビジネステクノロジーズ株式会社 | Decolorization method for colored wastewater |
| CN104724863A (en) * | 2015-03-27 | 2015-06-24 | 达州军华环保科技有限公司 | Novel efficient flocculating decolorization method |
| CN104787864A (en) * | 2015-03-30 | 2015-07-22 | 湖南科技大学 | Preparation method of composite decoloring flocculant for printing and dyeing wastewater treatment |
| CN108083483A (en) * | 2016-11-19 | 2018-05-29 | 湖南唯美环境工程股份有限公司 | A kind of papermaking or the decoloration treatment method of dyeing waste water |
| CN108147516A (en) * | 2018-01-12 | 2018-06-12 | 常州华禹环保科技有限公司 | Handle composite flocculation agent of dyeing waste water and preparation method thereof |
-
2018
- 2018-11-13 CN CN201811343961.7A patent/CN109455842B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336335A (en) * | 2000-07-29 | 2002-02-20 | 詹伯君 | Decoloring coagulant of composite iron salt |
| CN1792853A (en) * | 2005-11-17 | 2006-06-28 | 上海交通大学 | Combined treating process for waste water of basic printing and dyeing |
| JP4840330B2 (en) * | 2006-11-14 | 2011-12-21 | コニカミノルタビジネステクノロジーズ株式会社 | Decolorization method for colored wastewater |
| JP2011016048A (en) * | 2009-07-07 | 2011-01-27 | Act Co Ltd | Method of decoloring and purifying wastewater containing lignin and/or tannin |
| CN104724863A (en) * | 2015-03-27 | 2015-06-24 | 达州军华环保科技有限公司 | Novel efficient flocculating decolorization method |
| CN104787864A (en) * | 2015-03-30 | 2015-07-22 | 湖南科技大学 | Preparation method of composite decoloring flocculant for printing and dyeing wastewater treatment |
| CN108083483A (en) * | 2016-11-19 | 2018-05-29 | 湖南唯美环境工程股份有限公司 | A kind of papermaking or the decoloration treatment method of dyeing waste water |
| CN108147516A (en) * | 2018-01-12 | 2018-06-12 | 常州华禹环保科技有限公司 | Handle composite flocculation agent of dyeing waste water and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499853A (en) * | 2020-10-23 | 2021-03-16 | 广东溢达纺织有限公司 | Method for recycling hydrolyzed dye in dyeing wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109455842B (en) | 2021-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101670266B (en) | Method for removing organic cationic dyes from waste water by magnetic nano adsorption material | |
| US20180093260A1 (en) | Catalysts for degradation of organic pollutants in printing and dyeing wastewater and method of preparation thereof | |
| CN104108775A (en) | Composite reagent for treating recycled water of printing and dyeing wastewater and application method of composite reagent | |
| CN101695649B (en) | Application of modified flyash in urban sludge conditioning | |
| CN103726367B (en) | Utilize the process for cleanly preparing of disperse dyeing residual liquid | |
| CN104710038B (en) | A kind of method utilizing cellulose base flocculant coagulation decoloration dyeing waste water | |
| CN103880211B (en) | A kind of recycling treatment process containing magnesium high-salt wastewater | |
| CN103007881A (en) | Magnetically separated bamboo charcoal-based wastewater treatment agent and preparation method and application thereof | |
| CN104549130A (en) | Preparation method of nickel-aluminum hydrotalcite doped with surfactant | |
| CN109956690A (en) | A kind of domestic garbage incineration flyash processing method for cement industry | |
| CN102745761A (en) | Recovery and utilization method for dyeing residual liquid of reactive dye | |
| CN104386798B (en) | A kind of dyeing waste water dual treatment method | |
| CN104258816A (en) | Preparation method of magnetic stripping type montmorillonite nanocomposite material for wastewater treatment | |
| CN109455842A (en) | A kind of efficient decolorizing technique of the organic solvent containing dyestuff | |
| CN108031550A (en) | A kind of method of magnetic impurity in separating ultra-fine cobalt based compound powder | |
| CN107008230A (en) | Magnetic composite adsorbent and preparation method thereof | |
| CN102351268A (en) | Method of recycling inorganic salt in dyeing wastewater | |
| CN105152227A (en) | Method for preparing high-coercivity ferroferric oxide magnetic powder from steel chlorohydric acid pickling waste solution | |
| CN109052712A (en) | A kind of system and method handling simultaneously reuse textile industry qualified discharge water | |
| CN107134566B (en) | Method for preparing lithium ion battery cathode material from iron-containing solid waste obtained by utilizing electric flocculation printing and dyeing wastewater | |
| CN103332699B (en) | A kind of sodium silicate deferrization method | |
| CN101948220A (en) | Method for treating printing and dyeing wastewater | |
| CN104826577A (en) | Modified slag adsorbent for anion dye wastewater treatment, and preparation method thereof | |
| CN204122187U (en) | A kind of material that prevents dries up the horizontal sand mill of skinning | |
| CN101857391B (en) | Printing and dyeing sewage recycling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |