Treatment of reactive brilliant orange X-GN wastewater by three-dimensional electrode-electro-Fenton method

Abstract

The three-dimensional electrode-electro-Fenton method is a new advanced oxidation method that introduces three-dimensional electrode electrocatalytic technology on the basis of electro-Fenton，which has been widely used in water treatment. The activated brilliant orange X-GN wastewater was used as the treatment object，and the loaded three-dimensional electrode was prepared by excessive impregnation calcination method. The effects of pH，voltage，Fe2+ dosage and electrolyte concentration on the treatment effect were studied by experiments，and the experimental conditions were optimized by response surface method. The results showed that under the condition of pH 4.7，the supply voltage 20.39 V，the dosage of Na2SO4 2.13 g/L，and the dosage of Fe2+ 2.5 mmol/L，the removal rates of COD and chromaticity could reach 85.41% and 92.18%. The loaded three-dimensional electrode-electro-Fenton method has ideal treatment effect on the chromaticity and COD of reactive brilliant orange X-GN wastewater.

Keywords

• three dimensional electrode
• electro-fenton
• printing and dyeing wastewater
• electrocatalysis