Research on the Effect of Coagulation on Decolorization and Degradation of Red Dye Wastewater

The simulated dye wastewater of direct fast scarlet was disposed of by the coagulant of FeSO4. The effects of reaction time, the original pH value, coagulant dosages and temperature were discussed. The results showed that, at room temperature, the original pH was 7.9, the FeSO4 dosage was 1.2 g / L, then after stirring for 15mins, the coagulation effect was the most obvious, and the removal rate of chroma achieved 95.3%.