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Reverse micelle dye extraction and recycling method for textile dyeing waste water

A technology of dyeing wastewater and reverse micelles, which is applied in textile industry wastewater treatment, organic dyes, extraction water/sewage treatment, etc., can solve the problem that dyes cannot be reused, achieve significant cost advantages, simple preparation process, and low cost Effect

Inactive Publication Date: 2014-08-06
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is very effective for the degradation of dyes, it is usually only suitable for the removal of low-concentration dyes in water, and the dyes in wastewater cannot be reused after being decomposed.

Method used

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  • Reverse micelle dye extraction and recycling method for textile dyeing waste water
  • Reverse micelle dye extraction and recycling method for textile dyeing waste water
  • Reverse micelle dye extraction and recycling method for textile dyeing waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The present embodiment extracts the reactive red 195 dyeing waste water of 100ml concentration 0.2g / L, pre-extraction 300ml, wherein each component in pre-extraction and back-extraction is:

[0041] Pre-extraction: cetyltrimethylammonium bromide and n-pentanol, the weight ratio is 1:2000;

[0042] Post-extraction: sodium dioctyl sulfonate succinate, the weight ratio of the dosage to n-amyl alcohol in the pre-extraction is 1:2000.

[0043] The specific steps are:

[0044] 1) Filtration treatment of textile dyeing wastewater, mainly to remove fiber debris generated during the dyeing process;

[0045] 2) Pre-extraction of reverse micelles: First, add the extract to the dyeing wastewater, and fully stir it at a temperature of 15 degrees for 60 minutes. In 60 minutes, the anionic dye in the dyeing wastewater gradually entered the organic solvent n-amyl alcohol under the electrostatic attraction of the cationic surfactant cetyltrimethylammonium bromide. figure 2 As shown,...

Embodiment 2

[0050] The present embodiment extracts the reactive red 195 dyeing waste water of 100ml concentration 0.6g / L, pre-extraction 165ml, wherein each component in pre-extraction and back-extraction is:

[0051] Pre-extraction: cetyltrimethylammonium bromide and n-pentanol, the weight ratio is 1:1500;

[0052] Post-extraction: sodium dioctyl sulfonate succinate, the weight ratio of the dosage to n-amyl alcohol in the pre-extraction is 1:1500.

[0053] The specific steps are:

[0054] 1) Filtration treatment of textile dyeing wastewater, mainly to remove fiber debris generated during the dyeing process;

[0055] 2) Pre-extraction of reverse micelles: First, add the extract to the dyeing wastewater, and fully stir it at a temperature of 25 degrees for 30 minutes, then make the mixed solution static and layered under gravity, and the static time is In 30 minutes, the anionic dye in the dyeing wastewater gradually entered the organic solvent n-amyl alcohol under the electrostatic attr...

Embodiment 3

[0060] The present embodiment extracts the reactive red 195 dyeing waste water of 100ml concentration 1.0g / L, pre-extraction 30ml, wherein each component in pre-extraction and back-extraction is:

[0061] Pre-extraction: cetyltrimethylammonium bromide and n-pentanol, the weight ratio is 1:2500;

[0062] Post-extraction: sodium dioctyl sulfonate succinate, the weight ratio of the dosage to n-amyl alcohol in the pre-extraction is 1:2500.

[0063] The specific steps are:

[0064] 1) Filtration treatment of textile dyeing wastewater, mainly to remove fiber debris generated during the dyeing process;

[0065] 2) Pre-extraction of reverse micelles: First, add the extract to the dyeing wastewater, and fully stir it at a temperature of 35 degrees for 10 minutes, and then make the mixed solution static and layered under the action of gravity, and the static time is In 10 minutes, the anionic dyes in the dyeing wastewater gradually entered the organic solvent n-amyl alcohol under the ...

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Abstract

The invention relates to a reverse micelle dye extraction and recycling method for textile dyeing waste water. According to the method, a reverse micelle extraction method is used for extracting anionic azo dye in dyeing waste water, and the dye is transferred to a new water phase through re-extraction for dyeing again. The method has the advantages of simpleness in preparation process, low cost, environmental friendliness, high safety and easiness in industrial implementation; more importantly, both the dye and n-pentanol can be reused after the dye in the dyeing waste water is treated by the reverse micelle extraction technology, so that the dye reuse rate is high; on one hand, the environmental pollution problem caused by dyeing waste water discharge is solved; on the other hand, the method has remarkable cost advantage.

Description

technical field [0001] The invention relates to the technical field of dyeing wastewater treatment, in particular to a reverse micellar extraction and recycling method of dyeing wastewater. Background technique [0002] The textile industry is one of the departments that discharge a large amount of industrial wastewater in my country. According to incomplete statistics, the annual wastewater discharge has exceeded 1 billion tons, ranking in the forefront of my country's industrial wastewater discharge, of which the printing and dyeing wastewater discharge accounts for 80% of the textile industrial wastewater. About %, printing and dyeing wastewater contains high concentrations of organic matter. Once discharged into rivers, the water body will consume a large amount of dissolved oxygen. The dyes in the wastewater can absorb light, reduce the transparency of the water body, cause the death of fish and other aquatic organisms, and destroy the ecological balance of the water body...

Claims

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Application Information

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IPC IPC(8): C02F1/26C09B67/10C09B67/36C02F103/30
Inventor 易世雄孙胜贺小琳
Owner SOUTHWEST UNIVERSITY
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