冀东油田污水处理工艺研究

Study on Technique of Oily Wastewater Disposal

冀东油田于2002年相继完成了两座联合站污水处理系统的改造扩建工程后,日处理能力均达到10000m3。2个污水处理系统的工艺基本相同,主要采用沉降隔油、过滤和生化处理等方法。处理后外排水水质指标全部达到国家GB8978-1996一级排放标准。经济效益显著,大幅降低了运行成本,一年即可为油田节约成本1670万元。同时,对运行中存在的外输污水中硫酸盐还原菌(SRB)含量超标以及药剂的匹配性和过滤罐性能不很稳定的问题提出了改进意见和建议。

The two oily sewage treatment systems in Jidong Oilfield were successively reconstructed in 2002 by adopting oil-separation settlement, filtration, biochemical treatment techniques. The result shows that the quality of injected water and drained water treated by the upgrading systems completely achieved the drainage criterions. These reconstructed systems can guarantee the requirements of water recycle produced in oilfield and get great economic benefits. Some opinions and suggestions for improving problems in the practical operation of the systems are presented.