2013•Leather Science and EngineeringRequires access

Study on Treatment of Fur Dyeing Wastewater by Ozonation Oxidation-PAC Coagulation Process

Bian Jia-jia

Abstract

The treatment of fur dyeing wastewater by ozonation oxidation-coagulation process has been studied in this paper.The coagulation process had synergistically assistted and enhanced effect in the treatment of fur dyeing wastewater by ozonation oxidation.In comparison with ozonation oxidation,this combined process had the advantages of better CODCr removal efficiency and decoloration effect.The results of applying test in treatment of fur dyeing wastewater by ozonation oxidation-coagulation process,when the flow rate of ozonation was 1600 mg/h,the reaction time was 30 min,the dosage of coagulation was 1600 mg/L and pH 9,the removal rate of the chroma and the CODCr were 44.69% and 95.71%.And the chromaticity of treated fur dyeing wastewater can achieve I-grade criteria specified in Integrated Wastewater Discharge Standard(GB 8978-1996).

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Key concepts: Dyeing, Coagulation, Wastewater, Chemistry, Oxidation process, Pulp and paper industry, Sewage treatment, Waste management