活性染料废水的混凝处理研究

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采用化学混凝法,以MgSO4为混凝剂、阴离子聚丙烯酰胺为助凝剂,分别对棉布印染过程中排放的活性染料废水进行实验研究.结果表明,pH对脱色率有较大的影响,当pH>12.0时,脱色率基本趋于稳定;脱色率及COD去除率均随MgSO4加量的增加而提高;加入阴离子聚丙烯酰胺可降低絮凝沉降时间.经混凝处理后废水的脱色率>90%,COD去除率>80%.该方法对处理棉布印染活性染料废水具有一定的适用性.
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