Treatment of textile wastewater by Fenton's reagent

Abstract

Treatment of textile wastewaters from a dyeing and finishing mill by Fenton's reagent is investigated. The experimental results are assessed in terms of COD and color (turbidity) reductions to determine the treatment efficiency of the Fenton's process. Operating variables, such as the pH, amounts of H₂O₂ and FeSO₄, time of Fenton's treatment and amounts of polyaluminum chloride (PAC) and polymer, are explored to determine their respective effects on the efficiency of the Fenton's oxidation of the textile wastewater. Optimum operating range for each of those variables are experimen‐tally obtained. The operating ranges of those were found to be different from those of dye waste‐water containing only single dye component. The treatment of Fenton's reagent was found to be rather effective with an efficiency of COD removal of up to 80%.

Key words:

• Fenton's reagent
• textile wastewater
• coagulation
• decolorization