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Putting "green underwear" on the textile industry

Published:

2019-06-11

As one of the pillars of the domestic traditional industry, the traditional textile industry has always been a major polluter because of its large pollution, high energy consumption, and high water consumption. At present, some large domestic textile factories have been forced to suspend production under increasing environmental pressure. Without the outer covering of high energy consumption and high pollution, the traditional textile industry will be unable to sustain. How to make the textile industry a green industry with low energy consumption and low pollution is an urgent problem to be solved.

Not long ago, the Tianjin Institute of Industrial Biotechnology of the Chinese Academy of Sciences developed a bio-enzymatic green dyeing pre-treatment process, and successfully completed the application demonstration and promotion of the 100,000-meter cloth bio-enzyme pre-treatment process in Hebei Ningfang Group. The prescription was prescribed.

The traditional pre-dyeing process includes 5 steps including scorching, desizing, refining, bleaching and mercerizing. In this process, a large amount of chemical agents such as caustic soda and auxiliaries must be used, which consumes a large amount of water and energy, causing serious environmental pollution. According to statistics, the energy consumption per unit of fabric in China is 2.4 times the world average. Taking cotton fabrics as an example, 300 tons of water are needed to process 10,000 meters of cotton fabrics. At the same time, fibers are easily damaged and equipment is easily damaged.

In response to this situation, the Tianjin Academy of Industrial Biotechnology of the Chinese Academy of Sciences cooperated with Tianjin Tianfang Group and Hebei Textile Union Material Supply and Marketing Co., Ltd. to develop key biological enzyme preparations and production processes with excellent properties for three years. The self-developed compound enzyme preparation can combine desizing and refining in the traditional process into one step, thereby greatly improving the pretreatment efficiency.

According to reports, enzymatic desizing and refining are completed in one bath, which reduces steam energy consumption, eliminates the cost of alkaline wastewater treatment, and reduces the use of various chemical additives, which can significantly reduce the cost of pretreatment and improve the economic benefits of the textile industry. Practice has proved that compared with the traditional alkali process, the cost of producing 12,000 meters of pure cotton cotton cloth and 11,000 meters of aramid hot wave kapok can be reduced by 30% and 70% respectively.

It is worth mentioning that the biological complex enzyme preparation also has the characteristics of mild processing conditions, high efficiency, and good specificity, which not only has almost no damage to cotton fibers, but also improves product quality.

Source: People's Daily