原地异位氧化技术修复多环芳烃污染场地工程应用案例  

Application Case of In-situ Ectopic Chemical Oxidation Technology for Remediation of Polycyclic Aromatic Hydrocarbons Contaminated Site

作　　者：钟杰玲 Zhong Jieling(Guangzhou First Municipal Engineering Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]广州市第一市政工程有限公司,广东广州510000

出　　处：《皮革制作与环保科技》2022年第23期188-190,193,共4页Leather Manufacture and Environmental Technology

摘　　要：华南地区某地块场调及风险评估表明,场地内主要存在多环芳烃的污染,苯并[a]芘、二苯并[a,h]蒽污染深度为0~2 m,结合项目土壤污染及场地后期规划开发利用情况,采用原地异位化学氧化技术进行修复,修复试剂选用过硫酸钠和生石灰,并建立阻隔墙对交界地块的污染进行工程隔断,修复后土壤回填到原基坑。通过采样检测对污染土壤修复效果作了分析评估,结果表明:该污染地块经清挖与修复达到预期目的,工程隔断措施切实有效。该污染地块的修复可为类似工程提供借鉴参考。According to the site survey and risk assessment of a plot in South China,the site is mainly polluted by polycyclic aromatic hydrocarbons,and the pollution depth of benzo[a]pyrene and dibenzo[a,h]anthracene is 0~2 m.In combination with the soil pollution of the project and the later planning,development and utilization of the site,the in-situ ectopic chemical oxidation technology is used for remediation.Sodium persulfate and quicklime are used as the remediation reagents.And a barrier wall is built to isolate the pollution of the junction plot.After repair,the soil shall be backfi lled to the original foundation pit.The remediation effect of contaminated soil was analyzed and evaluated through sampling and detection.The results show that the contaminated land has achieved the expected purpose through excavation and remediation,and the engineering isolation measures are effective.The remediation of the contaminated land can provide reference for similar projects.

关 键 词：多环芳烃 化学氧化技术 土壤修复 阻隔墙 

分 类 号：TS5[轻工技术与工程—皮革化学与工程]