简易垃圾填埋场地下水污染风险评价
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摘要
根据地下水污染的过程提出了一种简易垃圾填埋场对地下水污染风险的评价方法。首先假定地下水污染风险的表征,划定5个风险等级的分布范围,然后使用MODFLOW和MT3D软件以反演的方式推算出这5个风险发生时的污染源强,以此对某简易垃圾填埋场地下水污染风险作出评价,最后针对未来周边地下水开采量将会增加等场景,通过数值模拟得到了可能促使较高风险发生的因素,提出了降低风险等级的措施。结果表明,基于物理过程的地下水污染风险评价方法可以反映地下水的动态特征和污染物的运移状况,还可以对多种假设场景进行验证,对于风险受体来说,可以较好地刻画风险水平的分布。
This paper presented a groundwater pollution risk assessment method of simple waste landfill based on groundwater pollution process. Firstly,it assumed the risk characterization of groundwater pollution before delimit the five levels of risk distribution; secondly,it used the MODFLOW and MT3D software to determine the pollution intensity of each risk level through the method of inversion; thirdly,it took it as a criterion to evaluate the risk level of a simple waste landfill; finally,according to the case that exploitation of the groundwater will increase in the future,it obtained the factors that may cause a higher risk level by numerical simulation and put forward some measures to reduce the risk level. The results show that groundwater pollution risk assessment method based on the physical process can reflect the dynamic characteristics of the groundwater and the migration of contaminant; meanwhile,it can verify a variety of hypothetical scenarios,which can describe the level of risk distribution well for risk receptors.
This paper presented a groundwater pollution risk assessment method of simple waste landfill based on groundwater pollution process. Firstly,it assumed the risk characterization of groundwater pollution before delimit the five levels of risk distribution; secondly,it used the MODFLOW and MT3D software to determine the pollution intensity of each risk level through the method of inversion; thirdly,it took it as a criterion to evaluate the risk level of a simple waste landfill; finally,according to the case that exploitation of the groundwater will increase in the future,it obtained the factors that may cause a higher risk level by numerical simulation and put forward some measures to reduce the risk level. The results show that groundwater pollution risk assessment method based on the physical process can reflect the dynamic characteristics of the groundwater and the migration of contaminant; meanwhile,it can verify a variety of hypothetical scenarios,which can describe the level of risk distribution well for risk receptors.
引文
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[5]杨彦,于云江,王宗庆,等.区域地下水污染风险评价方法研究[J].环境科学,2013,34(2):654-660.
[6]Yu C,Yao Y,Hayes G,et al.Quantitative Assessment of Groundwater Vulnerability Using Index System and Transport Simulation,Huangshuihe Catchment,China[J].Science of the Total Environment,2010,408(24):6108-6116.
[7]马娟.城市固体废弃物卫生填埋场环境风险评价[D].沈阳:辽宁工程技术大学,2009.
[8]UK Environment Agency.Guidance on Assessment on Risks from Landfill Sites[M].Bristol,UK:Environment Agency Publisher,2004.
[2]李志萍,谢振华,林健.地下水污染风险评价指标体系及方法探讨[J].黑龙江水专学报,2010,37(3):115-117.
[3]Berhoff K.Spatially Explicit Groundwater Vulnerability Assessment to Support the Implementation of the Water Framework Directive:a Practical Approach with Stakeholders[J].Hydrology&Earth System Sciences,2008,12(1):111-122.
[4]张丽君.地下水脆弱性和风险性评价研究进展综述[J].水文地质工程地质,2006,33(6):116-119.
[5]杨彦,于云江,王宗庆,等.区域地下水污染风险评价方法研究[J].环境科学,2013,34(2):654-660.
[6]Yu C,Yao Y,Hayes G,et al.Quantitative Assessment of Groundwater Vulnerability Using Index System and Transport Simulation,Huangshuihe Catchment,China[J].Science of the Total Environment,2010,408(24):6108-6116.
[7]马娟.城市固体废弃物卫生填埋场环境风险评价[D].沈阳:辽宁工程技术大学,2009.
[8]UK Environment Agency.Guidance on Assessment on Risks from Landfill Sites[M].Bristol,UK:Environment Agency Publisher,2004.