Abstract Residual anionic polyacrylamide in polymer-flooding oil production wastewater results in the formation of a thermodynamically stable system. In this study, the effects of three different types of medicaments, namely, cationic, anionic and nonionic agents, in dynamic treatments, such as adding a position, dosage and combined processes of chemical addition, on the oil removal rate of sewage were examined. In the treatment with a single agent, the oil removal rate of the cationic agent CQY-1 and the nonionic agent CHF-2 was ≥ 97.8%. The charge characteristics of different ionic agents for the combined dosing treatment indicated that the oil removal rate was better than that of a single agent; the combined dosing ratio was 50 mg/L CHP-1 and 50 mg/L CHP-2. At 80 mg/L CQY-1, the oil removal rate of the dynamic process was ≥ 98.8%, and the dosage of CQY-1 was reduced from 200 mg/L to 50–150 mg/L, which corresponded to a decrease of 25.0%–75.0%. Therefore, the combined dosing process effectively reduced the single dosage.

中文翻译：

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增加净水剂对含聚合物采油污水处理的影响

摘要 聚合物驱采油废水中残留的阴离子聚丙烯酰胺导致形成热力学稳定体系。本研究考察了阳离子、阴离子和非离子三种不同类型药剂在加药位置、加药量和化学加成组合过程等动态处理中对污水除油率的影响。在单剂处理中，阳离子剂CQY-1和非离子剂CHF-2的除油率≥97.8%。不同离子药剂联合投加处理的电荷特性表明，除油率优于单一药剂；联合给药比例为 50 mg/L CHP-1 和 50 mg/L CHP-2。在80 mg/L CQY-1下，动态过程除油率≥98.8%，CQY-1的用量从200 mg/L减少到50~150 mg/L，相当于减少了25.0%~75.0%。因此，联合给药过程有效地减少了单次给药。