轻工业地块基坑土壤重金属污染修复效果评估监测案例分析  

Case Study on Evaluation and Monitoring of Remediation Effect of Heavy Metal Pollution in Foundation Pit Soil of a Light Industrial Plot

作　　者：程小谷[1] 徐开华 Yang Yaoshuai Cheng Xiaogu;Xu Kaihua;Yang Yaoshuai(Guangzhou Research Institute of Environmental Protection,Guangzhou,Guangdong 510620,China;Guangzhou Special Pressure Equipment Testing and Research Institute,Guangzhou,Guangdong 510633,China)

机构地区：[1]广州市环境保护科学研究院,广东广州510620 [2]广州特种承压设备检测研究院,广东广州510633

出　　处：《绿色科技》2022年第14期121-124,共4页Journal of Green Science and Technology

摘　　要：某轻工业地块A区存在铅、汞复合污染,采用水泥窑协同处置技术对污染土壤进行了修复。为了评估修复后的地块对人体健康和环境产生的风险,现场采集A区基坑土壤13组样品以及潜在二次污染区土壤16组样品,分析了铅、汞含量。监测结果显示,经过不到2个月的施工修复后,基坑A土样中铅的浓度为31~130 mg/kg,汞的浓度为0.114~0.911 mg/kg,潜在二次污染区土样中铅的浓度为34~67 mg/kg,汞的浓度为0.234~0.463 mg/kg。结果表明:采用三维立体图形结合平面展开图标识基坑采样点位,配合二次编码,可以缩短采样至检测分析时间,该场地经修复后对人体健康和环境产生的风险可接受。Lead and mercury combined pollution existed in area A of a light industrial plot.Cement kiln co-disposal technology was used to repair the contaminated soil.In order to assess the risks to human health and the environment of the restored plots,thirteen groups of foundation pit soil samples in zone A and 16 groups of soil samples in potential secondary contaminated areas were collected on site to analyze the contents of lead and mercury.The monitoring results show that after less than 2 months of construction and repair,the concentration of lead in the soil sample of foundation pit A is 31mg/kg~130mg/kg,and the concentration of mercury is 0.114mg/kg~0.911mg/kg.The concentration of lead in the soil samples in the polluted area was 34mg/kg~67mg/kg,and the concentration of mercury was 0.234mg/kg~0.463mg/kg.The results show that based on 3 d graphics plane graph identification of foundation pit sampling points,with secondary coding,sampling to test analysis can shorten the time;the remediation process has not caused secondary pollution to the soil in area A,and the risk to human health and the environment after the remediation is acceptable.

关 键 词：铅、汞复合污染 水泥窑协同处置技术 三维立体图 二次编码 

分 类 号：X-5[环境科学与工程]