Main application of polyacrylamide in the printing and dyeing industry
TIME：2023-07-21 17:32:10SOURCE：admin
Main application of polyacrylamide in the printing and dyeing industry:
1.In the textile industry, polyacrylamide flocculant as a sizing agent and finishing agent for fabric post-treatment can produce a soft, crease-resistant and mold-resistant protective layer;
2.The flocculant as a post-treatment agent can prevent static and flame-retardant fabrics;
3.When used as a auxiliaries for printing and dyeing, it can make the product have a large attachment fastness and high vividness, and it can also be used as a bleaching non-silicon polymer stabilizer;
4.This is an important point for the efficient purification of wastewater from the printing and dyeing industry.
In addition, the characteristics of wastewater in printing and dyeing industry are very obvious:
Printing and dyeing wastewater has a large amount of water, and each ton of textile used for printing and dyeing consumes 100 to 200 tons of water, of which 80 to 90% is used as wastewater. Textile printing and dyeing wastewater is characterized by large amount of water, high content of organic pollutants, high alkalinity, and large variations in water quality. It is one of the industrial wastewaters that are difficult to handle. Wastewater contains dyes, slurries, additives, oils, acids, alkalis and fibers. Impurities, sand materials, inorganic salts, etc.
The key to the coagulation treatment of printing and dyeing wastewater is to select a suitable flocculant. The main flocculants that are conventionally applied to printing and dyeing wastewater treatment are aluminum sulfate, iron sulfate, and ferric chloride in the early stage and cationic polyacrylamide in the later stage. These flocculants are The treatment of some non-water-soluble dye wastewaters has obvious effects. For example, disperse dyes, vat dyes, sulfur dyes, COD and color removal are all very high.