Residual liquid dyeing process of cheese

Abstract

The invention provides a residual liquid dyeing process of cheese in order to reduce the dye consumption for cheese dyeing. The residual liquid dyeing process is characterized in that a dye vat No.1 and a dye vat No.2 are connected through a pump, after yarns in the dye vat No.1 are dyed for the first time, a dyeing solution is pumped into the dye vat No.2, and after the yarns in the dye vat No.2 are dyed, the dyeing solution is returned to the dye vat No.1 to dye undyed yarns; the dyeing solution is recycled for dyeing between the dye vat No.1 and the dye vat No.2 according to the method; and after the dyeing solution is exhausted each time, a post-processing stage is entered, the dyed yarns are taken out after the post-processing is completed, and the undyed yarns are hung to wait for the import of the dyeing solution. According to the residual liquid dyeing process disclosed by the invention, the water consumption and sewage discharge are reduced from the source, resource consumption and environment pollution are reduced, and the cyclic utilization of resources and clean production are realized.

Description

technical field [0001] The invention belongs to the technical field of dyeing of textile materials, and in particular relates to a cheese residue dyeing process. Background technique [0002] The dyeing wastewater discharged from the printing and dyeing industry has high COD and high chroma, and it is difficult to decolorize. Its main component is dyeing liquid. According to incomplete statistics, the discharge of residual liquid from printing and dyeing factories across the country reaches 3 million to 4 million tons. With the increasingly stringent discharge standards and rising water and sewage charges, more and more attention has been paid to the reuse of printing and dyeing wastewater. [0003] Package dyeing, like other industries with high energy consumption and high pollution, also regards energy saving and emission reduction as the main goal of future development. The dyeing solution for conventional reactive dyeing is all disposable, and the dyeing solution after...

AI Technical Summary

Problems solved by technology

[0005] Although this patent reduces the amount of color-fixing agent, in the dyeing process, the required dyeing auxiliaries have not been effectively utilized, and the high-concentration dyeing sewage has not been recycled, and it is directly discharged to the sewage plant, which still has Large amount of waste dyeing liquid, high COD, high chroma, large amount of sewage treatment, and high cost

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