CN106380023A - Decolorization method of disperse dye production wastewater - Google Patents
Decolorization method of disperse dye production wastewater Download PDFInfo
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- CN106380023A CN106380023A CN201611072207.5A CN201611072207A CN106380023A CN 106380023 A CN106380023 A CN 106380023A CN 201611072207 A CN201611072207 A CN 201611072207A CN 106380023 A CN106380023 A CN 106380023A
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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
- C02F9/00—Multistage 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- 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)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a decolorization method of disperse dye production wastewater. A strong-alkali reagent with good stability and high neutralization capability is used for performing high-efficient decolorization on the disperse dye production wastewater with high chromaticity, strong acidity and high chemical oxygen demand. The decolorization method of the disperse dye production wastewater provided by the invention has the advantages that strong alkali is used for regulating production wastewater until the pH is greater than 5.5; redundant raw materials, residual products and few intermediate byproducts in the wastewater are separated out; then, filtering is performed; the dye wastewater decolorization is realized. The method has the advantages of simplicity, convenience, high speed, high efficiency, cleanness, no secondary pollution and the like; the decolorization rate can reach to 90 percent or higher, and can reach to 96.41 percent to the highest degree. The decolorization of the disperse dye production wastewater is realized; organic matters in the dye wastewater are separated out, so that the chemical demand quantity of the dye wastewater is reduced; the quantity of hazardous wastes in the traditional quicklime neutralizing method is reduced; the technological process of subsequent wastewater treatment can also be reduced, so that the wastewater treatment cost is reduced.
Description
Technical field
The present invention relates to water pollution control and resource technology field, produce useless in particular to a kind of disperse dyes
The discoloration method of water.
Background technology
Dye industry has the dyestuff of numerous kinds, raw material that often dyestuff of different cultivars needs, production technology, anti-
Condition etc. is answered to there is larger difference, the raw material of part residual and intermediate etc. lead to dye industry to produce waste water and have pollutant to become
Point complicated, colourity is high, COD is high, acid strong, toxicity is big, difficult the features such as.Therefore, the process of waste water from dyestuff is always and perplexs
One great difficult problem of dye industry, can efficiently, environmental protection, safety Dye Wastewater Treatment be restriction industry healthy for a long time
The key factor of development.
The traditional desolventing technology way of disperse dyes Production in Chemical Plant waste water mainly directly adopts Calx neutralization precipitation
Or add in ammonia and rear recycling decolorising agent Polyvinylpyrrolidone, polyacrylamide, poly dimethyl allyl ammonium chloride etc.
Conventional lightening agents are decoloured, but Calx neutralization precipitation creates hazardous waste calcium sulfate (having adsorbed numerous organic pollutions)
It is difficult to recycling of resource, the ammonium sulfate that ammonia liquor neutralization process processing procedure contains Organic substance can cause secondary pollution and peace
Full hidden danger.Document report is had to process good percent of decolourization using modes such as ultrafilter membrane, wet oxidation, microelectrolysis processings, but cost
Height, complex process, technical requirements are high, operation easier is greatly it is difficult to promote the use of in DYE PRODUCTION enterprise.
In view of this, the special proposition present invention.
Content of the invention
The first object of the present invention is the discoloration method providing a kind of disperse dyes to produce waste water, to solve existing process
Prepare the produced method complex process producing waste water of disperse dyes, technical requirements are high, operation easier is big, it is secondary easily to bring
The problems such as pollution, described discoloration method adopts highly basic to adjust waste water in dye production to pH more than 5.5, and it is unnecessary in waste water to separate out
Raw material, bottom product and a small amount of intermediate by-products, then carry out filtering the decolouring realizing producing waste water, the method has simply
Convenient, efficient, cleaning and the advantages of non-secondary pollution.The method not only achieves the decolouring that disperse dyes produce waste water, also logical
Overregulating pH value makes the Organic substance in waste water in dye production separate out, thus reducing the chemical requirement (COD) producing waste water, can
To reduce the technological process of subsequent wastewater treatment, thus reducing the expense of wastewater treatment.The second object of the present invention is to carry
A kind of percent of decolourization ＞ 90% of the waste water after being decoloured for discoloration method of described disperse dyes production waste water, this waste water success
Decolouring, can carry out follow-up waste water treatment step.
In order to realize the above-mentioned purpose of the present invention, spy employs the following technical solutions：
A kind of disperse dyes produce the discoloration method of waste water, comprise the following steps：
The pH ＞ 5.5 that disperse dyes produce waste water is adjusted using highly basic, standing, filtration after stirring, after being decoloured
Waste water；
Preferably, described pH is 6.5～13.0.
Disperse dyes are typically prepared from by diazo reaction and coupling reaction, and the dyestuff after preparation through being washed to pH is
4-7.Therefore, produce the waste water after washing.This waste water has pollutant component complexity, colourity is high, COD is high, acid strong, toxicity
Greatly, the features such as difficult.Disperse dyes provided herein produce the discoloration method of waste water, are adjusted using highly basic and produce waste water
It is more than 5.5 to pH, separates out redundance in waste water, bottom product and a small amount of intermediate by-products, then carry out filtering and realize
Produce the decolouring of waste water, the method has the advantages that simple and convenient, efficient, cleaning and non-secondary pollution.Preferably, adjust and produce
The pH of waste water is 6.5～13.0, and the percent of decolourization producing waste water under this scope can reach more than 95%.Further, its pH
Can be any value or any range between 5.5～14.0.For example, pH=5.5,6.0,6.5,7.0,7.5,8.0,
8.5、9.0、9.5、10、10.5、11.0、11.5、12.0、12.5、13.0、13.5、9.4、11.2、12.7.
In addition, the method not only achieves the decolouring that disperse dyes produce waste water, make production waste water also by adjusting pH value
In Organic substance separate out, thus reduce produce waste water chemical requirement (COD), it is possible to reduce the technique of subsequent wastewater treatment
Flow process, thus reduce the expense of wastewater treatment.
Preferably, described highly basic is inorganic strong alkali, it is furthermore preferred that described inorganic strong alkali is in sodium hydroxide or sodium carbonate
One or two kinds of combination.
In order to reduce the chemical requirement (COD) producing waste water, as far as possible few introduction Organic substance, it is to avoid secondary pollution etc. is asked
Topic.It is therefore preferable that highly basic is inorganic strong alkali.It is furthermore preferred that described inorganic strong alkali is sodium hydroxide or sodium carbonate, or two
The combination of person.Highly basic sodium hydroxide and sodium carbonate have good stability, neutralising capacity strong the features such as so that production wastewater treatment mistake
Journey has the advantages that efficient, convenient, neutralization efficiency, security performance height, addition are few.
Preferably, the mass concentration of described sodium hydroxide is 220～250g/L.
Optimize the mass concentration of sodium hydroxide, the addition of reasonable arrangement highly basic further, reduce as far as possible and produce waste water body
Long-pending change.
Preferably, the pH that described disperse dyes produce waste water is 0.1～0.5, and COD is 9000～10000mg/
L.
Described there is high chroma, highly acid, the disperse dyes of high chemical oxygen demand (COD) produce waste water and all can use
Method provided herein is decoloured.
Preferably, described disperse dyes produce waste water is waste water produced by dispersed blue dye H020.
It is furthermore preferred that described dispersed blue dye H020 is mainly prepared from the following materials：2- cyano group -4- nitro -6- bromine
Aniline, N, N- diethyl 3-acetylaminoaniline, three iso-butyl ester of phosphoric acid, carbamide and diazonium.
It is further preferred that described disperse dyes produce waste water including：2 cyano 4 nitro 6 bromo aniline, N, N- bis-
Ethyl 3-acetylaminoaniline, carbamide, 2- cyano group -4- nitro -6- bromo- 2 '-acetylaminohydroxyphenylarsonic acid 4 '-lignocaine diphenyl diimide, 2- cyanogen
One of base -4- nitroaniline, carboxylic acid and isobutanol or several combinations.
The discoloration method that disperse dyes provided herein produce waste water is applied to produced by dispersed blue dye H020
Waste water, this waste water stock solution has highly acid, and color assumes atropurpureuss.May contain in this waste water and add unnecessary raw material (2- cyanogen
Base -4- nitro -6- bromaniline, N, N- diethyl 3-acetylaminoaniline, carbamide etc.), a small amount of product (2- cyano group -4- nitro -6-
Bromo- 2 '-acetylaminohydroxyphenylarsonic acid 4 '-lignocaine diphenyl diimide) and minimal amount of intermediate by-products (2 cyano 4 nitro aniline, carboxylic
Acid, isobutanol etc.).When pH changes, above-mentioned Organic substance separates out, and after filtering, reaches the purpose of decolouring.
Preferably, the rotating speed of described stirring is 100～500rad/min.
Preferably, the time of described standing is 0.5～2 hour.
Preferably, described filtration is carried out by the way of sucking filtration.
Optimize the mechanical parameter in stirring, standing and filter process and method, reach the mesh optimizing decolorizing efficiency further
's.
Disperse dyes as above produce the waste water after the discoloration method decolouring of waste water, the waste water after described decolouring de-
Color rate ＞ 90%.
The percent of decolourization ＞ 90% of the waste water after being decoloured, this waste water successfully decolours, and can carry out follow-up wastewater treatment step
Suddenly.
Compared with prior art, beneficial effects of the present invention are：
1) disperse dyes, provided herein produce the discoloration method of waste water, using highly basic regulation production waste water to pH
More than 5.5, separate out redundance in waste water, bottom product and a small amount of intermediate by-products, then carry out filtering and realize producing
The decolouring of waste water, has the advantages that simple and convenient, efficient, cleaning and non-secondary pollution.
2) disperse dyes, provided herein produce the discoloration method of waste water, not only achieve disperse dyes production useless
The decolouring of water, makes the Organic substance in production waste water separate out also by adjusting pH value, thus reducing the chemistry of waste water in dye production
Requirement (COD), it is possible to reduce the technological process of subsequent wastewater treatment, thus reduce the expense of wastewater treatment.
3) disperse dyes, provided herein produce the discoloration method of waste water, are adjusted using sodium hydroxide and sodium carbonate
Produce the pH value of waste water, this two kinds of inorganic strong alkalis have good stability, neutralising capacity strong the features such as so that production wastewater treatment mistake
Journey has the advantages that efficient, convenient, neutralization efficiency, security performance height, addition are few.
4) disperse dyes, provided herein produce waste water discoloration method decoloured after waste water percent of decolourization ＞
90%, this waste water successfully decolours, and can carry out follow-up waste water treatment step.
Specific embodiment
Below in conjunction with embodiment, embodiment of the present invention is described in detail, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and be not construed as limiting the scope of the present invention.Unreceipted concrete in embodiment
Condition person, the condition according to normal condition or manufacturer's suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, are
Can be by the commercially available conventional products bought and obtain.
Embodiment 1
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=5.5 that disperse dyes produce waste water is adjusted using the sodium hydroxide for 220g/L for the mass concentration, in 100rad/
After the stirring of min rotating speed is allowed to reaction completely, stand 0.5 hour, sucking filtration, the waste water after being decoloured.
Embodiment 2
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=6.5 that disperse dyes produce waste water is adjusted using the sodium hydroxide for 250g/L for the mass concentration, in 500rad/
After the stirring of min rotating speed is allowed to reaction completely, stand 2 hours, sucking filtration, the waste water after being decoloured.
Embodiment 3
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=7.5 that disperse dyes produce waste water is adjusted using the sodium hydroxide for 240g/L for the mass concentration, in 200rad/
After the stirring of min rotating speed is allowed to reaction completely, stand 1 hour, sucking filtration, the waste water after being decoloured.
Embodiment 4
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=8.5 that disperse dyes produce waste water is adjusted using the sodium hydroxide for 240g/L for the mass concentration, in 300rad/
After the stirring of min rotating speed is allowed to reaction completely, stand 1.5 hours, sucking filtration, the waste water after being decoloured.
Embodiment 5
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=9.5 that disperse dyes produce waste water is adjusted using the sodium hydroxide for 240g/L for the mass concentration, in 400rad/
After the stirring of min rotating speed is allowed to reaction completely, stand 2 hours, sucking filtration, the waste water after being decoloured.
Embodiment 6
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=10 that disperse dyes produce waste water is adjusted using the sodium hydroxide for 240g/L for the mass concentration, in 250rad/
After the stirring of min rotating speed is allowed to reaction completely, stand 1.5 hours, sucking filtration, the waste water after being decoloured.
Embodiment 7
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=12.5 that disperse dyes produce waste water is adjusted using the sodium hydroxide for 240g/L for the mass concentration,
After the stirring of 250rad/min rotating speed is allowed to reaction completely, stand 2 hours, sucking filtration, the waste water after being decoloured.
Embodiment 8
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=5.5 that disperse dyes produce waste water is adjusted using sodium carbonate, is allowed to react in the stirring of 100rad/min rotating speed
After completely, stand 1 hour, sucking filtration, the waste water after being decoloured.
Embodiment 9
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=7 that disperse dyes produce waste water is adjusted using sodium carbonate, is allowed to react in the stirring of 200rad/min rotating speed
Quan Hou, stands 2 hours, sucking filtration, the waste water after being decoloured.
Embodiment 10
The disperse dyes that the present embodiment is provided produce the discoloration method of waste water, specifically include following steps：
The pH=9.5 that disperse dyes produce waste water is adjusted using sodium carbonate, is allowed to react in the stirring of 500rad/min rotating speed
After completely, stand 2 hours, sucking filtration, the waste water after being decoloured；
Wherein, disperse dyes produce the waste water that waste water produces for dispersed blue dye H020, including：2- cyano group -4- nitro -6-
Bromaniline, N, N- diethyl 3-acetylaminoaniline, carbamide, bromo- 2 '-acetylaminohydroxyphenylarsonic acid, the 4 '-diethylamino of 2- cyano group -4- nitro -6-
In base diphenyl diimide, 2 cyano 4 nitro aniline, carboxylic acid and isobutanol, this blue dyestuff H020 is by 2- cyano group -4- nitro -6- bromobenzene
Amine, N, N- diethyl 3-acetylaminoaniline, three iso-butyl ester of phosphoric acid, carbamide and diazonium are prepared from.
The production waste water decoloring effect experimental with sodium hydroxide as nertralizer for the experimental example 1
The decolorizing effect that the disperse dyes that the embodiment of the present application 1-7 is provided produce the discoloration method of waste water is surveyed
Examination, experimental result is as shown in table 1.Wherein, embodiment 1-7 is the discoloration method with sodium hydroxide as nertralizer, embodiment 8-10
It is the discoloration method with sodium carbonate as nertralizer.
Experiment material：The production waste water of the dispersed blue dye H020 of Peng Lai Jia Xin dye chemical industry limited company, this gives up
Water stock solution pH=0.1, COD value 9831mg/L, color assumes atropurpureuss.Mainly contain in waste water and add unnecessary raw material (2- cyanogen
Base -4- nitro -6- bromaniline, N, N- diethyl 3-acetylaminoaniline, carbamide etc.), a small amount of product (2- cyano group -4- nitro -6-
Bromo- 2 '-acetylaminohydroxyphenylarsonic acid 4 '-lignocaine diphenyl diimide) and minimal amount of intermediate by-products (2 cyano 4 nitro aniline, carboxylic
Acid, isobutanol etc.).
Experimental technique：By waste water according to 1:After 50 dilution proportion, test the UV-visible absorbance before and after its decolouring,
Percent of decolourization under different pH value is calculated according to absorbance.Wherein, choose at the wavelength 430nm at the obtained the maximum absorption of visible region
Absorbance, calculates the percent of decolourization under different pH value according to equation below.
Formula：R%=(1-A/A0) × 100%；
Wherein, A0For the absorbance before dye wastewater treatment, A adjusts the absorbance to different pH for waste water from dyestuff.
PH value is tested using acidometer.
Comparative example 1-3：Choose decoloring dye waste water agent commercial at present, including：Polyvinylpyrrolidone, polyacrylamide
Amine, poly dimethyl allyl ammonium chloride, decolour to disperse blue H020 waste water in dye production respectively, and its percent of decolourization is followed successively by
11.5%th, 12.2%, 13.6%.
Table 1 sodium hydroxide is the production waste water decoloring effect experimental result of nertralizer
Test result indicate that, useless after the discoloration method decolouring that disperse dyes provided herein produce waste water
Water, percent of decolourization is high, can reach more than 90%, highest can reach 96.41%, the three kinds of decolorising agents providing far above comparative example
Waste water after decolouring.And, contribute to reducing the COD value of waste water after decolouring, conveniently subsequently further process waste water, save into
This.And comparative example is too low due to percent of decolourization, therefore very little is changed it is believed that almost not changing COD value to the content of Organic substance.
In sum, disperse dyes provided herein produce the discoloration method of waste water, adjust to produce using highly basic and give up
Water is more than 5.5 to pH, separates out redundance in waste water, bottom product and a small amount of intermediate by-products, then carries out filtering real
Now produce the decolouring of waste water, there is simple and convenient, efficient, cleaning and non-secondary pollution, percent of decolourization is high, reach 90% with
On, highest can reach 96.41%.This discoloration method, not only achieves the decolouring that disperse dyes produce waste water, also by regulation
PH value makes the Organic substance in production waste water separate out, thus reducing the chemical requirement (COD) producing waste water, it is possible to reduce follow-up
The technological process of wastewater treatment, thus reduce the expense of wastewater treatment.
Although illustrate and describing the present invention with specific embodiment, but it will be appreciated that without departing substantially from the present invention's
Many other changes can be made in the case of spirit and scope and change.It is, therefore, intended that in the following claims
Including all such changes and modifications belonging in the scope of the invention.
Claims (10)
1. a kind of disperse dyes produce the discoloration method of waste water it is characterised in that comprising the following steps：
The pH ＞ 5.5 that disperse dyes produce waste water is adjusted using highly basic, standing, filtration, the waste water after being decoloured after stirring；
Preferably, described pH is 6.5～13.0.
2. disperse dyes according to claim 1 produce the discoloration method of waste water it is characterised in that described highly basic is inorganic
Highly basic is it is preferred that described inorganic strong alkali is the combination of one of sodium hydroxide or sodium carbonate or two kinds.
3. disperse dyes according to claim 1 produce the discoloration method of waste water it is characterised in that described sodium hydroxide
Mass concentration is 220～250g/L.
4. disperse dyes according to claim 1 produce the discoloration method of waste water it is characterised in that described disperse dyes are given birth to
The pH producing waste water is 0.1～1.0, and COD is 9000～10000mg/L.
5. disperse dyes according to claim 1 produce the discoloration method of waste water it is characterised in that described disperse dyes are given birth to
Product waste water is waste water produced by dispersed blue dye H020；
Preferably, described dispersed blue dye H020 is mainly prepared from the following materials：2 cyano 4 nitro 6 bromo aniline, N,
N- diethyl 3-acetylaminoaniline, three iso-butyl ester of phosphoric acid, carbamide and diazonium.
6. disperse dyes according to claim 5 produce the discoloration method of waste water it is characterised in that described dispersed blue dye
Produced by H020, waste water includes：2 cyano 4 nitro 6 bromo aniline, N, N- diethyl 3-acetylaminoaniline, carbamide, 2-
Cyano group -4- nitro -6- bromo- 2 '-acetylaminohydroxyphenylarsonic acid 4 '-lignocaine diphenyl diimide, 2 cyano 4 nitro aniline, carboxylic acid and isobutanol
One of or several combinations.
7. disperse dyes according to claim 1 produce the discoloration method of waste water it is characterised in that the rotating speed of described stirring
For 100～500rad/min.
8. disperse dyes according to claim 1 produce the discoloration method of waste water it is characterised in that the time of described standing
For 0.5～2 hour.
9. disperse dyes according to claim 1 produce the discoloration method of waste water it is characterised in that described filtration is using taking out
The mode of filter is carried out.
10. the disperse dyes according to any one of claim 1-9 produce the waste water after the discoloration method decolouring of waste water, and it is special
Levy and be, the percent of decolourization ＞ 90% of the waste water after described decolouring.
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| CN201611072207.5A CN106380023A (en) | 2016-11-29 | 2016-11-29 | Decolorization method of disperse dye production wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611072207.5A CN106380023A (en) | 2016-11-29 | 2016-11-29 | Decolorization method of disperse dye production wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436602A (en) * | 2019-05-08 | 2019-11-12 | 天津绿缘环保工程股份有限公司 | A kind of processing method of sewage treatment drug and the sewage containing chlorobenzene |
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|---|---|---|---|---|
| CN101066824A (en) * | 2007-06-14 | 2007-11-07 | 南开大学 | Process of treating and reusing effluent from 1-amino-8-naphthol-3, 6-disulfonic acid production |
| CN103304054A (en) * | 2013-06-16 | 2013-09-18 | 德州学院 | Printing and dyeing wastewater treatment method |
| DE102014012398A1 (en) * | 2014-08-20 | 2016-03-10 | Rainer Fülling | Processes and means for treating waste water from textile finishing operations such as dye works, which wastewaters contain reactive dyes and metal complexes, in particular copper complexes, for decolorizing and reducing the metal ion concentration, i |
-
2016
- 2016-11-29 CN CN201611072207.5A patent/CN106380023A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101066824A (en) * | 2007-06-14 | 2007-11-07 | 南开大学 | Process of treating and reusing effluent from 1-amino-8-naphthol-3, 6-disulfonic acid production |
| CN103304054A (en) * | 2013-06-16 | 2013-09-18 | 德州学院 | Printing and dyeing wastewater treatment method |
| DE102014012398A1 (en) * | 2014-08-20 | 2016-03-10 | Rainer Fülling | Processes and means for treating waste water from textile finishing operations such as dye works, which wastewaters contain reactive dyes and metal complexes, in particular copper complexes, for decolorizing and reducing the metal ion concentration, i |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436602A (en) * | 2019-05-08 | 2019-11-12 | 天津绿缘环保工程股份有限公司 | A kind of processing method of sewage treatment drug and the sewage containing chlorobenzene |
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