过热蒸汽脱附石油烃污染土壤效果及影响因子研究  

Research on the Effect of Superheated Steam Desorption of Petroleum Hydrocarbon on Soil Pollution and Its Influencing Factors

作　　者：汪军 马洁晨 成德久 凃啸宇 朱正杰 龚明杰 杨郑州[1] 谢晓娜[1] WANG Jun;MA Jiechen;CHENG Dejiu;TU Xiaoyu;ZHU Zhengjie;GONG Mingjie;YANG Zhengzhou;XIE Xiaona(Baise University,Baise 533000,China;Tongyuan Environmental Energy-Saving Co.,Ltd.,Hefei 230009,China;Anhui Provincial Engineering Research Center for Municipal Sludge Disposal and Resource Utilization,Hefei 230009,China)

机构地区：[1]广西百色学院,广西百色533000 [2]安徽省通源环境节能股份有限公司,安徽合肥230009 [3]安徽省市政污泥处置与资源化利用工程研究中心,安徽合肥230009

出　　处：《环境影响评价》2025年第1期84-89,共6页Environmental Impact Assessment

基　　金：广西科技基地和人才专项(桂科AD22080069和AD22035015);广西一流学科建设项目(农业资源与环境);安徽省重点研究与开发计划项目(2023t07020011)资助。

摘　　要：为探究过热蒸汽热脱附法对土壤中石油烃类污染物的去除效果及关键影响因子,本研究采用过热蒸汽热解析模拟装置,以某石油烃污染地块土壤为研究对象,研究过热蒸汽热解析过程中的解析温度、加热时间、土壤粒径及含水率等因素对土壤中石油烃去除率的影响。结果表明:过热蒸汽可实现石油烃的高效解析,解析温度和加热时间是关键影响因素,均与解析效果成正比,较大的土壤粒径和高含水率对解析效率效果更好,当解析温度为350℃、加热时间为10 min、粒径为0.25~0.83 mm、含水率为25%时,过热蒸汽对土壤中石油烃的解析效果最佳。In order to explore the effect of superheated steam thermal desorption method on the removal of petroleum hydrocarbon pollutants in soil and the key influencing factors,this study adopted a superheated steam thermal analysis simulation device and took the soil of a petroleum hydrocarbon polluted plot as the research object to study the influence of factors such as analytical temperature,heating time,soil particle size and water content on the removal rate of petroleum hydrocarbon in soil during the thermal analysis of superheated steam.The results show that:superheated steam can achieve efficient analysis of petroleum hydrocarbons,and the analysis temperature and heating time are the key influencing factors,both of which are proportional to the desorption effect,larger soil particle size and high water content have better effect on the analysis efficiency,when the analysis temperature is 350 ℃,the heating time is 10 min,the particle size is 0.25~0.83 mm,and the water content is 25%,superheated steam has the best analytical effect on petroleum hydrocarbons in soil.

关 键 词：石油烃污染 过热蒸汽 热解析 运行参数 去除效率 

分 类 号：X705[环境科学与工程—环境工程]