多相抽提+原位化学氧化联合技术在有机污染场地的工程应用

Engineering Application of Multiphase Extraction and In-situ Chemical Oxidation Combined Technology in Organic Contaminated Sites

经环境调查,某化工企业原址的地下水受到了氯苯、二氯苯等有机物污染。选取了其中两块相邻的8 m×4m区域作为中试场地,对比了"多相抽提+原位化学氧化"联合应用技术和单一多相抽提技术的修复效果。结果表明,在质量浓度较高、深度较深的污染场地,采用单一多相抽提技术在短时间内无法达到修复目标;而采用"多相抽提+原位化学氧化"联合应用技术则能快速有效地达到修复目标。

According to the environmental investigation result, the groundwater of the original chemical enterprise site was polluted by chlorobenzene, dichlorobenzene and other organic compounds. Two adjacent 8 m×4 m regions were selected as the pilot site to compare the remediation effect of multiphase extraction and in-situ chemical oxidation combined technology with that of single multiphase extraction technology. The results showed that the single multiphase extraction technology could not reach the remediation target in a short time at the contaminated site with a high pollutant concentration and a deep depth. However, the combined technology of multiphase extraction and in-situ chemical oxidation could quickly and effectively achieve the remediation goal.