Abstract: High voltage pulsed discharge (HVPD) technology was utilized to degrade oilfield wastewater in order to improve its biodegradability. Water samples before and after treated were analyzed by GC-MS to investigate the mechanism of biodegradability improvement. The experimental results show that the BOD5/COD of oilfield wastewater can be improved from 0.066 to 0.33 after 10 minutes by HVPD treatment, the biodegradability of oilfield wastewater was improved effectively. The optimal operational parameters of this experimental are : the pulse voltage peak value is ±26 kV, the air flow rate is 0.50 m3/h and the pulse frequency is 150 Hz.The GC-MS analytic results indicate that the ploynuclear compounds and long chain alkanes and aromatic Hydrocarbons in oilfield wastewater are degraded to low relatively molecular pollutants after HVPD technology treatment.

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摘要： 利用高压脉冲放电技术,开展降解采油污水并提高其可生化性能的实验研究;对处理前后水样中有
机污染物进行GC-MS分析以研究其可生化性提高的机理。结果表明,利用高压脉冲放电技术可短时间内显著提
高采油污水可生化性能,10min内可将BOD5/COD从0.066提高至0.33;对于本试验装置,最佳操作条件为脉冲电
压峰值±26kV,曝气量为0.50m3/h,脉冲频率150Hz。GC-MS分析表明,经过高压脉冲放电处理,采油污水中大
量存在的稠环类物质、长链烷烃类以及芳香族化合物被降解为易生物降解的相对分子质量小的物质。

关键词: 高压脉冲放电 ,  , 采油污水 ,  ,  可生化性 ,  GC-MS