资源与产业 ›› 2017, Vol. 19 ›› Issue (3): 48-52.DOI: 10.13776/j.cnki.resourcesindustries.20170523.002

• 资源开发 • 上一篇    下一篇

工业场地再开发前的污染辨识与风险评估——以电镀企业遗留场地为例

马宁,高先萍,秦勇军,陈其思,程曦,朱小龙,孙秋   

  1. (1重庆市环境工程评估中心,重庆401121;2重庆市固体废物管理服务中心,重庆401121;3中国标准化研究院,北京100091)
  • 收稿日期:2017-05-05 修回日期:2017-05-17 出版日期:2017-06-20 发布日期:2017-06-29
  • 基金资助:
    重庆市环境保护局专项

IDENTIFICATION OF POLLUTION AND RISK ASSESSMENT OF INDUSTRIAL SITES BEFORE REDEVELOPMENT BASED ON A CASE STUDY ON REMAINED SITES BY ELECTROPLATING FACTORY

Ma Ning, Gao Xian-ping, Qin Yong-jun, Chen Qi-si, Cheng Xi, Zhu Xiao-long, Sun Qiu   

  1. (1.Appraisal Center of Chongqing Environmental Engineering, Chongqing 401121, China;2.Chongqing Management and Service Center of Solid Wastes, Chongqing 401121, China;3.China National Institute of Standardization, Beijing 100091, China)
  • Received:2017-05-05 Revised:2017-05-17 Online:2017-06-20 Published:2017-06-29

摘要: 以西南地区电镀企业搬迁遗留的工业场地作为研究对象,采样分析土壤重金属含量水平。结果表明,土壤Cr含量介于22.7~378 mg/kg之间(平均值为72.2 mg/kg),土壤Ni浓度介于19.8~1 220 mg/kg之间(平均值为127.8 mg/kg),以《展览会用地土壤环境质量评价标准(暂行)》(HJ 350-2007)的A标作为评价标准,土壤样品的Ni和Cr浓度超标率分别为12.9%和16.1%,最大超标倍数分别为1.99和24.4。根据《污染场地风险评估技术导则》(HJ 25.3-2014)对土壤Cr(Ⅵ)进行健康风险评价,所有土壤样品Cr(Ⅵ)浓度所对应的综合致癌风险均超过了可接受风险水平(1.0×10^6),最大值为1.41×10^-4,暴露途径是经口摄入和呼吸吸入。可见,在工业场地再开发前必须采取措施保障环境安全。

关键词: 工业场地, 重金属, 污染, 风险评估

Abstract: This paper, based on a case study on a remained site by relocated electroplating factory in Chongqing, analyzes the heavy metals concentration in the soil with results showing Cr concentration at 22.7 to 378 mg/kg, averaging 72.2 mg/kg, Ni at 19.8 to 1 220 mg/kg, averaging 127.8 mg/kg, 12.9% and 16.1% respectively over the standard, and 1.99 and 24.4 times at maximum by “Fair Land Soil Environmental Quality Appraisal Standard (HJ350-2007)”. According to “Risks Assessment Technical Guidelines of Polluted Sites (HJ25.3-2014)”, this paper conducted a health risk assessment on Cr (VI) with all samples over the acceptable level 1.0×10^-6 in comprehensive carcinogenic threshold limit, up to 1.41×10^-4. Exposure through mouth and breath. Measures must be taken to ensure the environmental safety before redevelopment of industrial sites. 

Key words: industrial sites, heavy metals, pollution, risks assessment

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