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Recycling dyeing process of nylon fabric printing and dyeing wastewater

A technology for nylon fabrics and printing and dyeing wastewater, which is applied in textile industry wastewater treatment, dyeing, textiles and papermaking, etc. It can solve the problems of high cost of biochemical methods and unsatisfactory CODcr removal rate, so as to save steam and improve dyeing production capacity and efficiency , the effect of shortening the dyeing time

Active Publication Date: 2017-12-22
石狮市万峰盛漂染织造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, printing and dyeing wastewater treatment technologies include physical and chemical methods, biochemical methods, electrochemical methods, chemical methods, and photochemical methods. The improvement of technology and the use of various new auxiliaries have led to an increasingly unsatisfactory CODcr removal rate in printing and dyeing wastewater, and traditional biological treatment technologies have been severely challenged

Method used

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  • Recycling dyeing process of nylon fabric printing and dyeing wastewater
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  • Recycling dyeing process of nylon fabric printing and dyeing wastewater

Examples

Experimental program
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Effect test

preparation example Construction

[0030] 1. Preparation of wastewater treatment agent WFS088:

[0031] 1. Formula and dosage

[0032] Wastewater treatment agent WFS088 includes raw materials in the following weight percentages:

[0033]

[0034]

[0035] 2. Preparation process:

[0036]Dilute sodium stearate with water first to prepare an aqueous solution with a mass concentration of 15%, then transfer the aqueous solution to a reaction kettle, add surfactants according to weight percentages, heat to 70°C, and then sequentially add cleaning agents according to weight percentages agent and borax, fully stirred and mixed, cooled to 40°C, and then added defoamer, diffusing agent MF, buffer and anti-coagulant in sequence according to the percentage by weight, after the foam was naturally eliminated, finally added water and fully stirred and mixed, that is, Wastewater treatment agent WFS088 was obtained;

[0037] 2. Preparation of special surfactant WFS099

[0038] 1. Formula and dosage

[0039] Special ...

Embodiment 1

[0044] A kind of nylon fabric printing and dyeing wastewater circulation dyeing process, comprises the following process steps:

[0045] (1) First check the dyeing machine to ensure that the dyeing machine is operating normally, and prepare the required dyes and dyeing auxiliaries according to the process requirements;

[0046] (2) Then calculate the required amount of water according to the requirements of the process bath ratio = 1:9 and the weight of the dyed fabric (kg), and directly add the collected printing and dyeing wastewater into the dyeing machine at 70 °C without cooling down, and then put it into the dyeing machine. Run the nylon fabric to be dyed in the dyeing machine cylinder for 3 to 4 minutes, so that the nylon fabric can be evenly soaked;

[0047] (3) Then add waste water treatment agent WFS088, special surfactant WFS099 and dyeing auxiliaries to the printing and dyeing wastewater in the dyeing machine, and add the weighed required dyes according to the dyei...

Embodiment 2

[0054] A kind of nylon fabric printing and dyeing wastewater circulation dyeing process, comprises the following process steps:

[0055] (1) First check the dyeing machine to ensure that the dyeing machine is operating normally, and prepare the required dyes and dyeing auxiliaries according to the process requirements;

[0056] (2) Then calculate the required amount of water according to the requirements of the process bath ratio = 1:8 and the weight of the dyed fabric (kg), and directly add the collected printing and dyeing wastewater into the dyeing machine at 60 ° C without cooling down, and then enter the waiting room Dye the nylon fabric, make it run in the dyeing machine cylinder for 3-4 minutes, so that the nylon fabric can be soaked evenly;

[0057] (3) Then add waste water treatment agent WFS088, special surfactant WFS099 and dyeing auxiliaries to the printing and dyeing wastewater in the dyeing machine, and add the weighed required dyes according to the dyeing needs;...

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Abstract

The invention discloses a recycling dyeing process of nylon fabric printing and dyeing wastewater, the printing and dyeing wastewater is directly completely used as dyeing water for a nylon fabric, wastewater treatment agent WFS088, surfactant WFS099, dyeing auxiliaries and dyes are added during dyeing, the nylon fabric is put into a dyeing machine, the dyeing machine runs for 15-25min at process temperature of 100 to 110 DEG C under thermal insulation condition, the nylon fabric is cooled to 70 to 80 DEG C by a heat exchanger in the speed of 1 to 2 DEG C / min, after color comparison, the nylon fabric is directly discharged without cleaning, and dehydrated for completion of dyeing of the nylon fabric and recycling of the printing and dyeing wastewater. According to the recycling dyeing process of the nylon fabric printing and dyeing wastewater, the printing and dyeing wastewater is revolutionarily directly recycled in the dyeing process repeatedly, initial dyeing temperature is high, cloth washing and postprocessing are not needed, the dyeing process is greatly shortened, energy is greatly saved, production capacity is improved; dyeing water consumption and wastewater emission can be greatly reduced, sewage treatment cost is reduced, and dyeing production efficiency and benefit can be reduced.

Description

technical field [0001] The invention relates to the field of textile dyeing and finishing, in particular to a recycling dyeing process of nylon fabric printing and dyeing wastewater. Background technique [0002] The current manufacturing industry is in a very difficult period of transformation and upgrading, especially the survival and development of the highly polluting printing and dyeing industry. They are doing environmental upgrades. At present, many printing and dyeing enterprises have stopped or limited production due to the problem of pollutant discharge. Recently, the printing and dyeing industry has almost always survived in crisis and developed in turmoil. Many printing and dyeing enterprises have severely limited production capacity due to non-compliance with pollution discharge standards. Under such circumstances, enterprises are bound to lose money, or even suffer serious losses. In this very difficult period, we are soberly aware that the only way to active...

Claims

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Application Information

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IPC IPC(8): C02F1/00C02F1/20D06P1/16D06P1/44D06P3/24D06P5/02C02F103/30
CPCC02F1/00C02F1/20C02F2103/30D06P1/16D06P1/445D06P3/24D06P5/02
Inventor 李接代
Owner 石狮市万峰盛漂染织造有限公司
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