危险废物填埋处置的地下水环境健康风险评价

基于美国EPACMTP模型和健康风险评价模型,建立了一种危险废物填埋处置地下水环境健康风险评价方法.在此基础上,以电镀污泥为例,评价了其进入危险废物填埋场和一般工业固体废物填埋场处置的地下水环境健康风险,以验证该方法的有效性.结果表明,该方法需要参数少且计算简单;电镀污泥中的污染组分(Ni、Mn和Cr6+)进入危险废物填埋场和一般工业固体废物填埋场中处置所引起的目标敏感点处的地下水环境健康非致癌风险分别为10.20×10-4和0.81×10-1,两者均小于美国标准中非致癌的可接受风险水平(1.00),表明该电镀污泥进入上述填埋场引起的地下水环境健康风险不明显;就该电镀污泥填埋处置对目标敏感点处产生的地下水环境健康风险而言,其可以进入一般工业固体废物填埋场处置.

Health risk assessment of groundwater in hazardous waste landfill disposal

Based on the EPACMTP model and health risk assessment model developed by US EPA,a new method was set up to assesse the health risk of groundwater in hazardous waste landfill disposal,and the effectiveness of this method was studied in hazardous waste landfill site and non hazardous waste landfill site that accepted the electroplating sludge.The new developed method was effective and less parameter was needed.The non-cancer effect risk produced by target contaminants(Ni,Mn,Cr~(6+))was 10.20× 10~(-4) when the electroplating sludge was put into the hazardous waste landfill site,and the risk was 0.81×10~(-1) when the electroplating sludge was put into the non hazardous waste landfill site.However,the non-cancer effects risk (hazard index,HI)were largely below the value accepted from the US EPA.In terms of health risk on sensitive points,this electroplating sludge could be put into the non hazardous waste landfill site.