生物修复法处理新疆油田老化油泥试验

Test of Bioremediation Method for Aging Oil Sludge Treatment in Xinjiang Oilfield

以西北荒漠地区油田长期堆放的含油污泥为研究对象,通过创造有利于微生物生长繁殖的条件,强化其降解石油类污染物的活性,测定修复效果。现场小试结果表明,采用试验优选的土壤孔隙度为55%、土壤含水率为25%、菌剂投加量为5%（质量分数）、氮磷比为10∶1、生物表面活性剂投加量为5%等参数,开展油泥生物修复试验,6个月后测得其含油量为0.11%~0.29%,达到了国家规定的无害化排放标准。

This paper takes the long-term piled up oily sludge in the northwest desert oilfield as the research objects. The activity of degradation of petroleum contaminants is strengthened by creating conditions conducive to microbial growth and reproduction. and the repairing effect is determined.Field test uses the experimental optimization of soil porosity（55%）,soil moisture content（25%）,bacteria agent additive amount 5%（mass fraction）,N/P Ratio（10∶ 1） and additive amount of bio-surfactants5%. Oily sludge bioremediation experiment results show that oil content of oily sludge is 0.11%~0.29% after six months,which reached the harmless emissions standards prescribed by the state（less than 0.3%）.