石油烃污染场地气相抽提-微生物降解耦合修复研究  

Study on thermally enhanced soil vapor extraction combined with bioventing technology for the remediation of petroleum hydrocarbon contaminated site

作　　者：杨玉敏 孙明波 张博宇 Yang Yumin;Sun Mingbo;Zhang Boyu(Luoyang R&D Center of Technology of Sinopec Engineering(Group)Co.,Ltd.,Luoyang,Henan 471003;SINOPEC Research Institute of Safety Engineering Co.,Ltd.,Qingdao,Shandong 266000)

机构地区：[1]中石化炼化工程(集团)股份有限公司洛阳技术研发中心,河南省洛阳市471003 [2]中石化安全工程研究院有限公司,山东省青岛市266000

出　　处：《炼油技术与工程》2023年第12期59-64,共6页Petroleum Refinery Engineering

基　　金：中国石油化工股份有限公司项目(316064)。

摘　　要：热强化气相抽提(TSVE)-微生物降解(BV)耦合技术对石油烃污染土壤原位修复潜力巨大。通过实验模拟装置,考察常规气相抽提(SVE)、TSVE、BV及TSVE-BV耦合技术对轻组分和重组分石油烃的去除效果,结果表明气相抽提和热强化抽提对轻组分石油烃去除效果较好,对C_(13)以上的石油烃去除效果有限,TSVE-BV耦合方式可在更短时间内实现更高的污染物去除率。根据实验结果,将C_(13)作为TSVE与BV的耦合点,开发TSVE-BV修复装置,在某加油站进行示范修复,总石油烃(TPH)浓度远低于国标要求,污染物去除率高达96%,表明该耦合修复技术可以实现污染场地的高效修复。Thermally enhanced soil vapor extraction combined with bioventing(TSVE-BV)is a promising technology for the in-situ remediation of soils contaminated by petroleum hydrocarbon.In this study,based on two lab-scale devices,a series of experiments were conducted to evaluate the removal efficiency of light and heavy petroleum hydrocarbon using seveval technologies including SVE,TSVE,BV and TSVE-BV.The results indicated that SVE and TSVE showed a good performance in treating light petroleum hydrocarbon,but had a relatively limited performance in treating heavy petroleum hydrocarbon with more than 13 carbon atoms(C_(13))in it.And TSVE-BV technology could achieve a higher removal efficiency in shorter time.According to the experimental results,C_(13)was choosed to connect the TSVE and BV.Based on the experimental data,a pilot-scale equipment was constructed and used in a gas station’s remediation.The TPH concentration in the site was much lower than the risk screening value in the national standard and the contaminant removal rate reached 96%,which proved that TSVE-BV is an efficient and green remedy approach.

关 键 词：石油烃 污染场地 气相抽提 微生物降解 耦合修复 加油站 污染物去除率 

分 类 号：X53[环境科学与工程—环境工程]