Study On The Treatment Of Wastewater From Reactive Dye KE-7B Production

Reactive dyes are known as azo dyes for the azo in their molecules. In the production of these dyes, water is used as solvent and pressure filtration is used for solid-liquid separation, so a lot of wastewater is produced inevitably. The wastewater has characters of high-colority, high salinity and high-organic-substance-content. According to some technics and operational conditions of domestic dye wastewater treatment, following difficulties could be found in the treatment of reactive dyes wastewater: hard to be decoloured and biodegraded; the huge investment for treatment equipments; large demand of areas; high costs of treatment running, and so on.This research aim at the wastewater of reactive dye KE-7B production from a dyestuff chemical plant, and the decoloring effect and biodegradation of the wastewater were improved by micro-electrolysis, catalyzed oxidation, coagulation and biochemical tests. On the bases of experiments, we analyzed treatment mechanisms of pollutants in every step, and on the condition of the optimal management for the whole technics, we could find the social, economic, and environmental benefits of the process to the wastewater treatment.