Pollution and Treatment of Dye Waste-Water
Qiang Liu
Abstract
Abstract With the rapid development of industry, the production of dye waste-water has increased year by year. Dye composition complex, high concentration, and high color, difficult to biodegradable substances, difficult to biodegrade. According to the chemical structure, dyes are mainly divided into eight categories, such as azo dyes; according to the application can be divided into 14 categories, such as reactive dyes, acid dyes and so on. Dyes show chroma contamination due to the presence of chromophore and chromophore in the molecular structure. Dye waste-water comes from dyestuff industry, printing and dyeing factory, wool spinning factory and other industrial enterprises. The treatment methods of dye waste-water include physical method, chemical method and biological method, among which biological method is economical and practical.