Lu Lei, Gao Bao-Yu, Yue Qin-Yan, Cao Bai-Chuan
School of Environmental Science and Engineering, Shandong University, Ji'nan 250100, China.
Huan Jing Ke Xue. 2007 Apr;28(4):761-5.
The particle size distribution, flocculation index, Zeta potential and oil content in water were tested during flocculation of wastewater produced in polymer flooding of oil field. CHP-03, a mixture of a modified pluronic demulsifer and a weak-cationic flocculant, was used to improve the efficiency of oil droplet collision. The effects of polyacrylamide, temperature, and mixing speed on flocculation dynamics are discussed. Polyacrylamide affects the oil-water separation by obstructing the aggregation of small oil droplets, but electrostatic repulsion is not a major factor in preventing flocculation. The local temperature has a limited effect on flocculation. Fast mixing favors the growth of flocs, while slow mixing is suitable for the coalescence of oil droplets. Addition of 250 mg/L CHP-03 can enhance the oil-water separation and remove 92% of the oil content.
在油田聚合物驱采出废水絮凝过程中，对其粒径分布、絮凝指数、ζ电位和水中含油率进行了测试。使用CHP - 03（一种改性聚醚多元醇破乳剂和弱阳离子絮凝剂的混合物）来提高油滴碰撞效率。讨论了聚丙烯酰胺、温度和搅拌速度对絮凝动力学的影响。聚丙烯酰胺通过阻碍小油滴的聚集影响油水分离，但静电排斥不是阻止絮凝的主要因素。局部温度对絮凝的影响有限。快速搅拌有利于絮凝体的生长，而慢速搅拌适合油滴的聚并。添加250mg/L的CHP - 03可增强油水分离效果，去除92%的含油率。
