Novel energy-saving emission-reduction environmental-protection method and device

Abstract

The invention relates to a novel energy-saving emission-reduction environmental-protection method and a device; comprising the following processes: printing and dyeing and after finishing; the printing and dyeing process comprises rinsing, washing, acid cleaning, washing and dyeing, and the after finishing process comprises washing, acid cleaning, soaping, washing, color fixation and softening; the method is characterized in that: in the washing procedure and acid-cleaning procedure before the dyeing procedure, water produced by the washing procedure is contained in a recycling pond, and thenthe water in the recycling pond is used by the acid-cleaning procedure. Compared with the prior art, the method has the advantages of water, power and steam saving and waste water disposal reduction.

Description

Technical field: [0001] The invention relates to a printing and dyeing method and device. Background technique: [0002] Printing and dyeing wastewater has always been one of the important sources of environmental pollution, and the printing and dyeing industry is very serious in terms of water, electricity, steam, and compressed air consumption. Therefore, for the printing and dyeing industry, energy conservation and emission reduction is one of the current key targets of the Chinese government. At the same time, with the appreciation of RMB and the rise of the textile industry in neighboring countries, my country's textile enterprises are already in a difficult situation. Reducing costs is also an urgent task for textile enterprises. How to face the dual pressure from the government and the market, textile enterprises must make great improvements in energy conservation and emission reduction. [0003] Traditional yarn (or cotton or knitted fabric) dyeing machines are usu...

AI Technical Summary

Problems solved by technology

[0003] Traditional yarn (or cotton or knitted fabric) dyeing machines are usually produced with a large liquor ratio. Such a process will inevitably consume a lot of water, electricity, compressed air, steam, etc., which not only wastes a lot of energy, but also increases the dyeing cost. A large number of pollution sources, that is, a large amount of printing and dyeing wastewater

The usual printing and dyeing sequence includes degreasing, rinsing, water washing, pickling, water washing, dyeing, water washing, pickling, water washing, soaping, water washing, color fixing, oversoftening and other printing and dyeing processes and finishing processes, while the process before dyeing The waste water produced is relatively clean, but the existing process is to discharge all the waste water. The reason for this situation is that the structure of the traditional dyeing vat is not perfect, which leads to the need for a large amount of water for production. , the increase in water has led to an increase in the consumption of steam and electricity; at the same time, the traditional dyeing machine cannot effectively save and control the clear and turbid diversion and reuse of bleaching and dyeing water and the effective use of compressed air.

In this way, during dyeing production, the cost of dyeing materials, water, electricity, steam, compressed air and labor costs will be increased and wasted, and serious environmental pollution will be caused.

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