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填埋场长期渗漏的环境风险评价方法与案例研究

徐 亚 能昌信 刘 峰 董 路 刘玉强 黄启飞

徐 亚, 能昌信, 刘 峰, 董 路, 刘玉强, 黄启飞. 填埋场长期渗漏的环境风险评价方法与案例研究[J]. 环境科学研究, 2015, 28(4): 605-612.
引用本文: 徐 亚, 能昌信, 刘 峰, 董 路, 刘玉强, 黄启飞. 填埋场长期渗漏的环境风险评价方法与案例研究[J]. 环境科学研究, 2015, 28(4): 605-612.
XU Ya, NAI Changxin, LIU Feng, DONG Lu, LIU Yuqiang, HUANG Qifei. Method and Case Study to Evaluate Long-Term Environmental Risks from Landfill Leakage[J]. Research of Environmental Sciences, 2015, 28(4): 605-612.
Citation: XU Ya, NAI Changxin, LIU Feng, DONG Lu, LIU Yuqiang, HUANG Qifei. Method and Case Study to Evaluate Long-Term Environmental Risks from Landfill Leakage[J]. Research of Environmental Sciences, 2015, 28(4): 605-612.

填埋场长期渗漏的环境风险评价方法与案例研究

基金项目: 国家环境保护公益性行业科研专项(201209022);中央级公益性科研院所基本科研业务专项(2012YSKY16)

Method and Case Study to Evaluate Long-Term Environmental Risks from Landfill Leakage

  • 摘要: 填埋场的长期渗漏是由于防渗膜老化、导排层淤堵等原因,导致填埋场封场后渗滤液渗漏量增加的现象. 为分析渗滤液长期渗漏对填埋场环境风险的影响,采用Landsim-HELP耦合模型进行渗漏源强计算和污染组分迁移转化计算. 在此基础上,以致癌风险和非致癌风险为渗滤液渗漏的环境风险表征,采用剂量-效应模型对风险值进行计算. 最终构建了基于Landsim-HELP耦合的填埋场长期渗漏的环境风险评价模型,并将其用于山西省某工业固体废物填埋场渗漏风险研究. 结果表明:①短期(0~100 a)内,在CLTP(考虑长期性能衰减)和NCLTP(不考虑长期性能衰减)情景下,渗滤液渗漏的环境风险无明显差异, 并且二者的风险值均低于可接受风险水平;而长期(>100~1 000 a)状态下,2种情景的风险值差别较大,其中CLTP情景下的风险为NCLTP情景下的7倍左右,并且主要体现为Cr(Ⅵ)的致癌风险(10-4). 采用Monte Carlo方法分析风险结果的不确定性,其中Cr(Ⅵ)致癌风险值的不确定性为6.7,Cr(Ⅵ)和TCr的非致癌风险评价结果的不确定性分别为2.3、2.1.

     

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  • 刊出日期:  2015-04-25

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