Textile

In the textile industry chain, the printing and dyeing industry is an important component, mainly distributed in Zhejiang, Jiangsu, Guangdong and other regions, and has formed a certain scale of development. The printing and dyeing industry is a key link in the deep processing of textiles and the added value. Dyeing and finishing is a kind of processing technology. It is a general term for dyeing, printing, finishing, washing, etc. of grey fabrics. The process mainly includes dyeing, printing, overflow and so on. The printing and dyeing industry is in the middle of the textile and apparel industry chain, providing fabrics for downstream garment manufacturing companies. In addition to consuming a large amount of energy, the printing and dyeing process must also invest a large amount of water and chemical raw materials to generate a large amount of sewage discharge. The printing process usually involves 8 steps of desizing, refining, bleaching, mercerizing, dyeing, finishing, drying and finished products. Each of these steps requires a large amount of raw materials and chemical reagents to be injected, and a large amount of waste water and pollutants are also generated.