【摘要】 探索了二氧化氯对皮草染色废水脱色的最佳条件,研究了助剂对其脱色处理效果的影响。试验结果表明:脱色最佳试验条件为pH=9,ClO₂投加量为100 mg/L,反应时间15 min,匀染剂、加脂剂和甲酸都会对色度和COD_Cr的抑制作用产生叠加效应。对此,采用二氧化氯-混凝组合工艺,在最佳条件下,当混凝剂PAC和助凝剂PAM的投加量分别为720 mg/L和50 mg/L时,皮草模拟废水的色度和COD_Cr均能达到回用要求。更多还原

【Abstract】 The auxiliaries in the fur dyeing wastewater are studied to explore the optimum conditions for the decolorization by ClO₂. The optimized decolorization process with ClO₂ is discussed on dyeing wastewater from fur dyehouse. The effects of auxiliaries on the decolorization treatment are also analyzed.The results show that the optimum conditions are p H value 9, reaction time 15 min, ClO₂ concentration100 mg/L. Auxiliaries such as leveling agent, greasing agent and formic have an additive inhibitory effect on the chromaticity and CODCr. The wastewater treated by the ClO₂-coagulation oxidation of 720 mg/L PAC or 50 mg/L PAM has achieved the requirements of water reuse in either chromaticity or CODCr.更多还原