摘要：

以自制的马铃薯交联阳离子淀粉为絮凝剂，对某炼油厂的含油废水进行絮凝实验，以COD 去除率和油去除率为指标，得到絮凝剂最佳投加量，在此基础上考察了pH 和水温的影响。实验结果表明：絮凝剂的最佳投加量为4 650 mg/L、pH 为1.5~4、温度为50 ℃时，该絮凝剂对含油量和COD 的去除效果较好。

关键词: 交联, 阳离子淀粉, 絮凝, 含油废水

Abstract:

The home-made crosslinking cationic potato starch has been used as flocculant，in order to carry on the flocculation experiment for treating the oil-bearing wastewater at a refinery. The optimal dosage of flocculant is obtained according to the indexes of its removal rates of COD and oil-content. Based on this，the effects of pH and water temperature are investigated. The results show that the optimal dosage of flocculant is 4 650 mg/L. The removal rates of oil-content and COD are better when pH is 1.5-4 and water temperature is 50 ℃.

Key words: crosslink, cationic starch, flocculation, oil-bearing wastewater

中图分类号: 

• X703