行业案例

INDUSTRY CASE

Printing and dyeing textiles

Textile printing and dyeing wastewater is one of the industrial wastewater that is difficult to treat because of its large amount of water, high content of organic pollutants, high alkalinity and large change in water quality.

In the process of dye production, such as sulfonation, nitrification, diazotization, reduction, oxidation and acid (salt) precipitation, a large number of pollutants are generated. In the dye production, 90% of inorganic raw materials and 10%~30% of organic raw materials are transferred to water. The concentration of pollutants is high, the composition of wastewater is complex, and the wastewater contains a large amount of organic substances and salts. With the characteristics of high CODCr, deep color, strong acidity and alkalinity, it has been a difficult problem in wastewater treatment and has become one of the key environmental pollution sources.

Project Case

PROJECT CASES

Pinghu dedicated dyeing and finishing

A Project