介绍了一种处理采油废水的新型破乳剂,利用该破乳剂处理某油田采油废水,COD_Cr去除率可一次性达到 85 %以上。油去除率可达到 95 %以上。处理后的水再经砂滤,COD_Cr值可达到 10 0mg L以下,油含量可达到10mg L以下,达到了含油污水的国家级排放标准。为油田采出废水达标排放找到了一条出路。

A new kind of demulsifying agent used to treat oil extraction wastewater is introduced.When the oil extraction wastewater is treated by this demulsifying agent, the removal rate of COD_Cr in purified water can attain to more than 85 %, and the removal rate of oil can attain to more than 95 %.After passing through the sand filtration,COD_Cr can attain to below 100 mg L and oil concentration can attain to below 10 mg L.The quality of oil-bearing wastewater can attain to the national standard of discharge.A useful way is found to discharge extraction wastewater in oil field to the environment .