臭氧氧化-PAC混凝法处理毛皮染色废水

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

采用臭氧氧化与混凝相结合的方法处理毛皮染色废水。研究结果表明:混凝法对毛皮染色废水的臭氧氧化具有辅助协同作用,可强化臭氧氧化能力。臭氧氧化-PAC混凝法对毛皮染色废水的色度和CODCr去除率均较单独使用臭氧氧化有较大提高。当臭氧流量为1600 mg/h、反应时间为30 min,混凝剂聚合氯化铝用量1600 mg/L、pH为9时,臭氧氧化-PAC混凝法对毛皮染色废水CODCr的去除率可达44.69%,色度去除率达95.71%,处理后废水色度为30倍,达到了《污水综合排放标准》(GB8978-1996)一级标准中对色度的要求。

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 CODG 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 nag / h, the reaction time was 30 min, tile dosage of coagulation was 1600 mg/L and pH 9, the removal rate of the ehroma and the CODG 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）.