Study on Treatment of Fur Dyeing Wastewater by Ozonation-Activated Carbon Adsorption Process

The treatment of fur dyeing wastewater by ozonation-activated carbon adsorption process was studied in this paper. The results indicated that the ozonation reaction conformed to first-order reaction kinetics within intervals of 0 to 22.6 min and 22.6 to 30 min respectively, and their correlation coefficients (R2) were larger than 0.9900, but the slope of the fitting reaction rate equation in the front section was 3.5 times than that of the latter section, which showed that the initial reaction rate of ozonation was higher and oxidbility was stronger. The activated carbon can assist and enhance synergistically the ozonation in the treatment of fur dyeing wastewater. Therefore their combined process had the advantages of better CODCr removal efficiency and prominent decoloration effect in comparison with ozonation or activated carbon adsorption process only. The results showed that the removal rates of the CODCr and the colority were 31.11% and 85.71% respectively in treatment of fur dyeing wastewater by ozonation-activated carbon adsorption process, when the flow rate of ozonation was 1600 mg/h, the dosage of activated carbon was 10g/L and the reaction time was 20 min.