石油污染土壤电动-微生物修复技术研究  

Study on Electro-Microbial Remediation of Oil-Contaminated Soil

作　　者：李婷婷[1] 吴迪[1] 辛亮 王恩彪 赵紫钰 彭湃[1] LI Tingting;WU Di;XIN Liang;WANG Enbiao;ZHAO Ziyu;PENG Pai(Shenyang Research Institute of Chemical Industry,Shenyang 110021,China)

机构地区：[1]沈阳化工研究院有限公司,沈阳110021

出　　处：《应用技术学报》2021年第4期362-368,共7页Journal of Technology

基　　金：国家重点研发计划(2020YFC1808802);上海市地方能力建设计划(20090503200)资助。

摘　　要：在石油污染土壤两端插入石墨电极,施加24 V直流电压,使电极之间土壤电势降达到1V/cm。添加实验室筛选的高效石油降解菌,研究电动-微生物联合修复对石油污染土壤pH、土壤温度、有机碳含量、有效氮、有效磷、有效钾等指标的影响。结果表明,石油浓度为2%的模拟污染土壤经过电动-微生物联合技术处理后,最佳降解率达到67.5%。有效N、有效P、有效K分别平均提高为原来的1.5、1.4和1.2倍。外加电动修复可以使土壤pH、温度保持在一个相对恒定的变化范围内,为微生物的生命活动提供了一个稳定的环境,提高石油降解率。A graphite electrode was inserted at both ends of the oil-contaminated soil,and a 24 V DC voltage was applied to reduce the potential of the soil between the electrodes to 1 V/cm.The effects of electrokinetic and microbial combined remediation on pH value,soil temperature,organic carbon content,available N,available P,available K and other indexes of petroleum-contaminated soil were studied.The results showed that the optimal degradation rate of the simulated contaminated soil with 2%petroleum concentration was 67.5%after electrokinetic and microbial combined treatment.The effective N,effective P and effective K increased by 1.5,1.4 and 1.2 times,respectively.At the same time,the addition of electric remediation proved that the pH value and temperature of the soil could be kept in a relatively constant range,providing a stable environment for the life activities of microorganisms,and improving the oil degradation rate.

关 键 词：电动-微生物修复 高效石油降解菌 石油 

分 类 号：X53[环境科学与工程—环境工程]