南京某化工企业土壤有机污染调查及修复研究

Pollution Investigation and Remediation of Organic Contaminated Soil of a Chemical Company in Nanjing

摘要: 对南京市某化工企业土壤进行了有机污染物调查与修复研究，提出了土壤污染物修复目标值和土壤修复面积、土壤修复量和修复方法。结果表明：该场地有机污染物超标的有苯并a芘(BaP)、1,2二氯丙烷、1,2,3-三氯丙烷、氯仿和双(2-氯异丙基)醚；经计算BaP、1,2二氯丙烷、1,2,3-三氯丙烷、氯仿和双(2-氯异丙基)醚基于人体健康的修复目标值分别为0.063 mg•kg⁻¹、0.890 mg•kg⁻¹、0.005 mg•kg⁻¹、0.290 mg•kg⁻¹和0.210 mg•kg⁻¹；1,2二氯丙烷、1,2,3-三氯丙烷、氯仿和双(2-氯异丙基)醚的土壤污染面积分别为814 m²、1376 m²、1246 m²、1782 m²，折算后土壤修复总体积量约9171 m³；建议对该土壤采用气相抽提法进行治理。

Abstract: The organic pollutants investigation and Remediation of a chemical Company in Nanjing were car-ried out, and the target of pollutant restoration, the area of soil remediation, the volume of soil remediation and the soil remediation technology were put forward. The results indicated that the concentration of Benzo[a]Pyrene (BaP), 1,2-Dichloropropane, 1,2,3-Trichloropropane, Chloroform and Nemamol are excessive in the soil. According to the calculation, the target values of restoration of BaP, 1,2-Dichloropropane, 1,2,3-Trichloropropane, Chloroform and Nemamol are 0.063 mg•kg⁻¹, 0.890 mg•kg⁻¹, 0.005 mg•kg⁻¹, 0.290 mg•kg⁻¹ and 0.210 mg•kg⁻¹ respectively based on human health. The area contaminated by 1,2-Dichloropropane, 1,2,3-Trichloropropane, Chloroform and Nemamol were 814 m², 1376 m², 1246 m² and 1782 m² respectively, which converted into volume of about 9171 m³. This soil should be treated by Soil Vapor Extraction (SVE) technology.