【摘要】 采用混凝烧杯实验，以脱色率和COD_Mn去除率为指标，研究特征黏度（0.63?dL/g、1.53dL/g、2.63dL/g）及复配比例（15:1、10:1、5:1）系列化的复合混凝剂PAC/PDM对模拟印染废水的混凝脱色效果和机理。结果表明，PAC/PDM具有良好的混凝脱色效果。其中，PAC/PDM（2.63/10:1）对活性红、活性蓝的混凝脱色效果最好，其最佳脱色率分别为98.67%、90.83%，最佳COD_Mn去除率分别为86.44%、80.79%；PAC/PDM（0.63/15:1）对分散红、分散深蓝的混凝脱色效果最好，其最佳脱色率分别为99.30%、99.18%，最佳COD_Mn去除率分别为86.49%、86.41%。结合Zeta电位测定及絮团形貌观察，PAC/PDM处理模拟印染废水的混凝机理主要是电中和吸附架桥。更多还原

【Abstract】 Through the coagulation beaker test,taking the decolorization rate and COD_Mn removal rate as the indexes,the study on the coagulation decolorization effect and mechanism using composite coagulant PAC/PDM with serial intrinsic viscosities （0.63 dL/g,1.53 dL/g,2.63 dL/g） and composite ratios （15:1,10:1,5:1）.The results showed that PAC/PDM had good coagulation decolorization effect.PAC/PDM （2.63/10:1） had the best coagulation decolorization effect on reactive red and reactive blue with the best decolorization rates of 98.67% and 90.83%,and the best COD_Mn removal rates of 88.29% and 82.27%.PAC/PDM （0.63/15:1） had the best coagulation decolorization effect on disperse red and disperse deep blue with the best decolorization rates of 99.30% and 99.18%,and the best COD_Mn removal rates of 88.57% and 87.85%.Combined with Zeta potential measurement and floc morphology observation,the coagulation mechanism of PAC/PDM treating simulated dyeing wastewater was mainly charge neutralization and adsorption bridging.更多还原