| Popis: |
The coagulation flocculation process with ferric chloride as coagulant and polymer as a flocculant was optimized for the elimination of heavy metals from a real textile wastewater using 42 composite central and surface response method. The effect of the three factors (pH, dose of coagulant and volume of flocculant) on the elimination of heavy metals was investigated and found to be positive. The optimal conditions obtained from the compromise of the desirable responses such as Cd removal, Pb removal, As removal, Ni removal and Se removal were 0.64 g/L of coagulant dosage, 2.6 g/L of flocculant dosage at pH 8.1. The maximum removal of Cd, Pb, Ni, As and Se in this study achieve respectively 38.49%, 78, 88% and 61.88% 60.63%, 81.76%, 47.01% in optimal conditions. |
