摘要
结合混合菌株与电场强化技术,对长庆油田油污土壤进行降解模拟实验。因不同电场强度刺激微生物产生的生物效应不同,表现出的底物降解效果也会有差异,故以0V/m作为对比,探讨100V/m,120V/m,140V/m,160V/m电场强度对混合菌株生长繁殖和迁移特征的影响。实验表明,生长促进趋势先增后减,电场强度0~120V/m表现为生长促进作用,并在120V/m时达到最大值,140V/m时几乎不受电场影响,而160V/m则表现为生长抑制作用。将优选电场与混合菌株耦合技术应用到实际油污土壤样品修复中。结果表明,土壤中油污降解率最高达到90.2%;相比无电场作用,油污去除率提高了19.2%。
A simulated experiment on the degradation of oily soil in Changqing Oilfield is carried out with the combination of mixed strains and electric field enhancement technique.The biological effects of different electric field intensities on microorganisms are different,as well as the substrate degradation effects.Compared with 0 V/m,the effects of electric field strengths of 100V/m,120V/m,140 V/m and 160 V/m on the growth,reproduction and migration characteristics of mixed strains are investigated.The experimental curve shows that the growth promotion trend increases first and then decreases,and the electric field intensity 0~120 V/m,shows the growth promotion effect,and reaches the maximum at the time of 120 V/m;the mixed strain is almost unaffected by electric field at 140 V/m,while 160 V/m showes growth inhibition.The coupling technique of optimum electric field and mixed strain is applied to the remediation of oily soil samples.The results show that the highest degradation rate of oil pollution in soil is 90.2%,and the removal rate increases by 19.2%compared with that of no electric field.
作者
蔡言红
张琪雯
柴晓蝶
赵元寿
孙先锋
CAI Yanhong;ZHANG Qiwen;CHAI Xiaodie;ZHAO Yuanshou;SUN Xianfeng(School of Environmental and Chemical Engineering,Xi′an Polytechnic University,Xi′an 710048,China;No.4 Oil Production Company,Changqing Oilfield,CNPC,Yulin 710021,Shaanxi,China)
出处
《西安工程大学学报》
CAS
2019年第3期280-284,共5页
Journal of Xi’an Polytechnic University
基金
陕西省科技厅科技统筹创新工程项目(2011KTZB03-03-03-04)
中国石油天然气股份有限公司措施废液集中处理后残渣无害化处理技术研究(17AQ-FW-008)
西安工程大学研究生创新基金(chx2019040)
关键词
外加电场
耦合
混合降解菌株
油污土壤
原油微生物
applied electric field
coupling
mixed degradation strains
oily soil
crude oil microorganism
作者简介
通信作者:孙先锋(1973-),男,西安工程大学副教授,研究方向为环境化学与微生物控制。E-mail:5116736@qq.com.
