基于熵值-模糊综合评价法的地下水污染评价——以河南某垃圾堆放场为例

Groundwater Pollution Evaluation based on Entropy Value-Fuzzy Conprehensive Evaluation Method——Taking a Typical Garbage Dump in Henan province as an Example

为了全面摸清垃圾堆放场的污染状况,结合该垃圾堆放场的实际情况,对垃圾堆放场地及下游水厂下水进行调查、勘察、实验室分析等,利用DRASTIC模型对垃圾场所在及周边地块防污性能进行评价,结果表明该地区防污性能中等,有一定的被污染风险;基于熵值-模糊综合评价法,同时结合单指标指数、内梅洛指数污染评价法,对垃圾堆放场及水厂地下水水质进行评价,得出垃圾场渗滤液对地下水第一层的污染情况,结果表明该垃圾场地下水已被垃圾渗滤液污染,GW1水质较好,GW2、GW3水质较差,水厂GW4尚未被污染,地下水质量良好。综上,应对垃圾堆放场进行防污治理以及对地下水进行积极处理,以免对该地区居民的生活用水造成影响。

In order to fully understand the pollution situation of the garbage dump site,combined with the actual situation of the garbage dump,investigation,surveys and laboratory analysis were conducted on the sewage of the garbage dump site and the downstream water plant.The DRASTIC model was used to evaluate the anti-pollution performance of the garbage dump and the surrounding plots.The results show that the region has moderate anti-fouling performance.There is a certain risk of pollution.Based on the entropy value-fuzzy comprehensive evaluation method,combined with the single index index,Nemero index pollution evaluation method,the groundwater quality of garbage disposal sites and water plants is evaluated.The landfill leachate pollution to the first layer of groundwater is obtained.The results indicate that the groundwater in the garbage site has been contaminated by leachate from the garbage.GW1 water quality is good,while GW2 and GW3 water quality are poor.GW4 in the water plant has not been contaminated,and the groundwater quality is good.pollution prevention and control measures should be taken for garbage disposal sites,as well as active treatment of groundwater,to avoid any impact on the daily water use of residents in the area.