摘要
某地区存在着数量众多的存量垃圾填埋场,其中一些由于缺少防渗系统,造成渗滤液对地下水的污染。结合某地区某存量垃圾填埋场的基本情况,通过调查、勘探、实验室分析等一系列工作,分析垃圾场所处的地质环境、地层对垃圾污染物的防护能力,并采用综合污染指数法和内梅罗指数法,评价该垃圾场渗滤液对下伏第一层地下水的污染情况及对地下水水质的影响情况。结果表明填埋场下游地下水均有不同程度污染,且污染程度与距离垃圾场的远近正态相关,说明地下水污染与垃圾场的存在有密切联系。统计结果表明,砷的污染指数最高,约为24倍,其次为高锰酸钾指数,最高为2.4;地下水综合污染指数为标准值的5倍,内梅罗污染指数为标准值的17倍之多。该垃圾场对地下水的污染具有一定的普遍性,反映了某地区已存的部分存量垃圾填埋场对地下水的污染情况,为某地区地下水资源的治理、开发利用提供依据,同时也为全国开展该项工作提供大量的借鉴经验。
Informal Waste Landfills in Certain City are numerous,and some of these are lack of anti-seepage control systems,which may lead to groundwater pollution caused by leachate. Considering conditions of the informal waste landfill in certain district,and the outcomes of investigation,reconnaissance,lab analysis and other related activities,the author investigated environmental geological conditions and the protective capability of stratum towards the waste pollutants,and evaluated the contamination status of the goundwater due to leachate within the first underlayer,and the effect on water quality of groundwater by Comprehensive Pollution Index and Nemerow Pollution Index evaluation methods. The result showed that contamination exsisted at different extent in all the groundwater samples flew through the downstream of the landfill. Moreover,the contamination extent positively correlated to the distance between the landfill and sampling site,that means groundwater contamination closely ties up with the landfill pollution. Accoding to the statistical results of the sample analysis,the highest pollution Index lies in arsenic,almost 24 times of the standard. And the subsequent pollution index lies in potassium permanganate,the highest resuilt reaches 2. 4. Groundwater comprehensive pollution index is 5 times of the standard,and the Nemerow pollution index is 17 times of the standard value. Such groundwater contamination caused by the landfill has universality. It is representative,and reflected the groundwater pollution status in part of existed informal landfill in certain district. The pollution of this landfill provided the basis and experience for management and development of groundwater resources in certain district.
出处
《南方能源建设》
2017年第3期115-118,共4页
Southern Energy Construction
关键词
存量垃圾
地下水
污染评价
informal waste landfill
groundwater
pollution evaluation
