Dyeing wastewater recycling method

A dyeing wastewater recycling technology, applied in the field of fabric dyeing, can solve the problems of a large amount of dyeing vat wastewater, fabric reduction cleaning, and more floating colors on the cloth surface, so as to improve the level dyeing property, reduce the floating color on the cloth surface, and improve the quality of fabrics Effect

Pending Publication Date: 2019-02-12
ZHEJIANG SHANYU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of more floating colors on the cloth surface after dyeing in the existing dyeing method, poor fastness, fabric needs to be restored and cleaned, and a large amount of dyeing vat wastewater is produced, the invention provides a method for recycling dyeing wastewater

Method used

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  • Dyeing wastewater recycling method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Step 1, weigh 30 grams of disperse yellow dye 114, 9 grams of polymer dispersant TEGO Dispers760W (Germany Tego Chemical Company), 0.05 grams of preservative benzoisothiazopyridine, 0.03 grams of defoamer Surfynol 104E (Nanjing Air Chemical Co., Ltd. Specialty Amine Company), adding 32 grams of water for sanding, sanding to a particle size of about 1 micron, and filtering to obtain liquid disperse yellow 114 dye.

[0031] Step 2: Weigh 0.08 grams of liquid disperse yellow dye, add 97.92 grams of water, 2 grams of 5% leveling agent, and 4 grams of polyester cloth. temperature, keep warm for 45 minutes, then start to cool down to 70 degrees at a rate of 1 degree per minute, use tweezers to clamp out the cloth, and dry the cloth for later use.

[0032] Step 3: Add 4 grams of polyester cloth and 0.08 grams of Disperse Yellow 114 liquid dye to the waste liquid dyed in the previous step, add a small amount of water to 100 grams of the total liquid, and continue to dye continu...

Embodiment 2

[0036]Step 1, weigh 30 grams of blue dye 79:1, 6 grams of polymer dispersant DISPERBYK-192 (BYK), 0.05 grams of preservative benzisothiazopyridine, 0.03 grams of defoamer Surfynol 104E, add 36 grams of water Carry out sand milling, sand milling to a particle size of about 1 micron, and filter to obtain a liquid disperse blue dye 79:1 dye.

[0037] Step 2: Weigh 0.08 grams of the above-mentioned liquid dye, add 97.92 grams of water, 2 grams of 5% leveling agent, and 4 grams of polyester cloth, put them all into the dyeing vat, put them into the proofing machine, and heat up to 130 degrees at a rate of 1 degree per minute , keep warm for 45 minutes, then start to cool down to 70 degrees at a rate of 1 degree per minute, use tweezers to clamp out the cloth, and dry the cloth for later use.

[0038] Step 3: Add 4 grams of polyester cloth and 0.08 grams of liquid disperse blue 79:1 dye to the waste liquid dyed in the previous step, add a small amount of water to the total liquid of...

Embodiment 3

[0042] Step 1. Weigh 30 grams of disperse red dye 343, 9 grams of polymer dispersion ZetaSperse2500 (AIR PRUDUCTS), 0.05 grams of preservative benzoisothiazopyridine, 0.03 grams of defoamer Surfynol 104E, add 36 grams of water for sanding, Sand mill to a particle size of about 1 micron, and filter to obtain liquid disperse red 343 dye.

[0043] Step 2: Weigh 0.08 grams of liquid dye, add 97.92 grams of water, 2 grams of 5% leveling agent, and 4 grams of polyester cloth, all of which are added to the dyeing vat, put into the proofer, and heat up to 130 degrees at a rate of 1 degree per minute. Keep warm for 45 minutes, then start to cool down to 70 degrees at a rate of 1 degree per minute, use tweezers to clamp out the cloth, and dry the cloth for later use.

[0044] Step 3, add 4 grams of polyester cloth and 0.08 grams of liquid disperse red 343 dye to the waste liquid after dyeing, add a small amount of water to 100 grams of total liquid, and continue to dye continuously acco...

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Abstract

The invention discloses a dyeing wastewater recycling method. The method is characterized by including the following steps that a high-polymer disperse agent and water are added into disperse dye filter cake for grinding, and filtering is conducted to obtain liquid disperse dye; the liquid disperse dye is weighed, water is added to prepare a dye bath, then a fiber material is immersed in dyeing equipment for dyeing, then the fiber material is taken out of the dyeing equipment, and after drying is conducted, a dyed fiber material is obtained; dyeing wastewater obtained after dyeing is conductedis reused for multiple times, the dyeing wastewater is returned to the step 2 as water used for the dye bath, and the step 2 is repeated to dye the fiber material. According to the dyeing wastewaterrecycling method, the high-polymer disperse agent is used for replacing conventional sodium sulfonate dispersion agents, not only is the dyeing effect good, but also washing is not needed, and the dyevat wastewater can be recycled, so that printing and dyeing wastewater discharge is greatly reduced.

Description

technical field [0001] The invention relates to the field of fabric dyeing, in particular to a method for recycling dyeing wastewater. Background technique [0002] In recent years, with the increasingly serious environmental problems, the country has higher and higher requirements for environmental protection, and a large amount of wastewater is produced in the printing and dyeing process. Realizing the ecological recycling of printing and dyeing water resources, energy saving and emission reduction is crucial to the healthy and sustainable development of my country's textile printing and dyeing industry and even the entire textile industry in the future. However, if the textile printing and dyeing wastewater is not properly treated, it will become a bottleneck problem hindering the development of the textile industry. Therefore, textile printing and dyeing enterprises urgently need new dyes that can be suitable for energy-saving and emission-reduction production processes...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/00D06P1/44D06P1/52D06P1/613D06P3/36
CPCD06P1/0008D06P1/16D06P1/445D06P1/525D06P1/613D06P1/6133D06P3/36
Inventor 陶安妮牟忠岳李策周慧丽胡效奎徐叙明柴凯
Owner ZHEJIANG SHANYU TECH CO LTD
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