Advanced Oxidation Processes for Textile Wastewater Treatment

Advanced oxidation is one of the potential alternatives to decolorize and to reduce recalcitrant wastewater loads from textile dyeing and finishing effluents. This process implies generation and subsequent reaction of hydroxyl radicals, which are the most powerful oxidizing species after fluorine. Among AOPs, treatment with ozone (often combined with H2O2, UV, or both), an UV/H2O2 system, or Fenton and Photo-Fenton type processes have proven to yield very good results either for complete mineralization of reactive dyes or for their transformation into less complex structures that are more easily biodegradable. Particularly, we summarize recent researches in the AOP treatment using O3 alone and or in combination with UV, US and H2O2 of textile wastewater for complete color and COD removal and decrease the toxicity of the treated wastewater for water.