摘要
在原油开采和集输过程中，会产生大量的含油污泥，除占据库存、影响清罐周期外，还会对生产和生态环境产生危害，同时含油污泥又是一种宝贵的二次资源，对其进行无害化处理和资源化利用具有重要意义。通过检测含油污泥微生物，分析得出土壤中微生物含量极低，土壤极度贫瘠。采集土样培育出43株石油降解菌和17株多环芳烃降解菌。通过降解率和16SrDNA鉴定试验，筛选出4株能产生表面活性剂的菌种。利用筛选出的微生物菌种，对现场500t含油污泥进行了处理。含油率大于10％的含油污泥采用机械清洗＋微生物降解，含油率小于10％的含油污泥直接采用微生物降解。通过微生物降解处理后，含油污泥里的含油率明显下降。在油田环境治理方面具有良好的应用前景和工业化生产潜力。
In the process of crude oil production and gathering, a large number of oily sludge was produced, which not only occupied the stock and affected the tank cleaning cycle, but also endangered the production and ecological environment. At the same time, the oily sludge was also a valuable sec- ondary resource. It was of great significance for harmless treatment and resource utilization. The detection of oily sludge microbes indicated that the microbial content in the soil was very low and the soil was extremely barren. 43 petroleum degrading bacteria and 17 polycyclic aromatic hy- drocarbon degrading bacteria were obtained from soil samples. Through the degradation rate and 16s rDNA identification experiment, 4 strains of bacteria were screened out to produce surfactant 500 t oily sludge that was treated with the selected microorganism. The oily sludge with oil con- tent more than 10% was degraded by mechanical cleaning and microbial degradation, and the sludge with oil content less than 10% was degraded directly by microbial degradation. After mi- crobial degradation, the oil content in oily sludge is reduced obviously. It has good application prospect and industrial production potential for treatment in oilfield environment.
作者
张文来
高挺
饶天利
王伟华
戴柏平
Wenlai Zhang;Ting Gao;Tianli Rao;Weihua Wang;Boping Dai(The 3rd Oil Production Plant of Changqing Oilfield Company,PetroChina,Yinchuan Ningxi)
出处
《石油天然气学报》
CAS
2018年第5期80-85,共6页
Journal of Oil and Gas Technology
关键词
含油污泥
微生物
降解
油泥清洗
Sludge
Microorganism
Degradation
Sludge Cleaning
