摘要
将油田采出水用于配制三次采油用的聚合物溶液,可降低油田污水外排的环境污染,减少油田生产的清水使用量,但未经处理的采出水直接用于配制聚合物溶液会导致聚合物溶液粘度下降。为此以大港油田采出水为研究对象,分别采用K2FeO4、KMnO4、H2O2、ClO2(投量均为10mg/L)和空气曝气对其进行氧化处理,将处理后的采出水以滤纸过滤后用于配制浓度为1500mg/L的聚丙烯酰胺溶液,结果表明,在室温环境下,用K2FeO4和KMnO4处理后的采出水中的Fe2+、总铁、总酚及悬浮物浓度均显著降低,所配制的聚丙烯酰胺溶液粘度,远高于用H2O2、ClO2和空气曝气处理后的采出水所配制的聚丙烯酰胺溶液的粘度。
Using oilfield produced water to prepare polymer solution used in tertiary oil extraction can reduce the environment pollution from oilfield wastewater discharge and save the clean water consumption for oil extraction. But untreated produced water can induce decrease in polymer solution viscosity. Therefore, the oxidation treatment of the produced water from Dagang Oilfield was performed using 10 mg/L K2FeO4, KMnO4, H2O2 and ClO2 and aeration respectively, and then filtrated by filter paper. All of the treated produced water were used to prepare PAM solution with concentration of 1 500 mg/L. The results show that at ambient temperature, Fe^2＋ , total iron, total phenols and SS in produced water are removed effectively by K2FeO4 and KMnO4, and the viscosity of PAM solution prepared by produced water treated by K2FeO4 and KMnO4 is higher than that treated by H2O2, ClO2 and aeration.
出处
《中国给水排水》
CAS
CSCD
北大核心
2008年第9期60-63,共4页
China Water & Wastewater
关键词
氧化
过滤
油田采出水
聚合物
粘度
oxidation
filtration
oilfield produced water
polymer
viscosity
