Pre-treatment of epoxy resin wastewater by fenton´s reagent and iron-carbon micro-electrolysis

Poxy resin wastewater contained highly COD and toxic organic compound. The application of Fenton reagents oxidation and iron-carbon micro-electrolysis for elimination of organic compound in aqueous solution were investigated separately. The degradation of COD in aqueous solution by Fenton´s reagent was studied. After 75 min, the UV254 value drop from 0.92 to 0.35. The 79% removal of COD in water (pH=4, T=70°C) was achieved when the concentration of H₂O₂ is 80mL/L, and the H₂O₂/Fe²⁺ ratio at 0.0076. In iron-carbon micro-electrolysis process, the UV254 value drop from 0.87 to 0.05. The 78% removal of COD in water (pH=3.0, T=30°C) was achieved After 75 min, when the ratio of Fe/ wastewater and Fe/C at 0.1 and 0.667 respectly.