多相抽提技术的发展现状与展望

Overview and Prospect of Multi-phase Extraction (MPE) Technology

多相抽提技术(multi-phase extraction,MPE)是一种可同时处理土壤气体、地下水及非水相液态污染物(nonaqueous liquid phase,NAPL)的原位修复技术,可快速高效修复污染区域。本文对MPE技术的系统组成、工艺流程、修复机理和影响因素进行了深度的探讨;阐明了MPE技术的优势与局限性;总结现有MPE技术发展滞后、无法快速高效地适应不同污染特征与水文地质条件污染场地的现状,提出了必须加快开发适应我国国情的MPE修复技术及成套设备的迫切需求。

Multi-phase extraction (MPE ) technology is an in-situ technology which can simultaneously treat soil gas,groundwater and non-aqueous phase liquid,so that contaminated area will be quickly and efficiently repaired.This study deeply discussed the system composition,technological process,remediation mechanism and influencing factors of MPE technology.The advantages and limitations of MPE technology were illustrated,it indicated that MPE technology development lagged behind which was unable to adapt to different pollution characteristic and hydrogeological conditions in different contaminated sites.As a result,the urgent need to accelerate the development of MPE technology and equipment adapted to Chinese national conditions was put forward.