海明距离模糊法在垃圾填埋场地下水质量评价中的应用

模糊评价法可将水质评价过程中的模糊问题定量化，从而更准确、更科学地评价水体污染程度。基于现有模糊数学法在水环境评价中的研究成果，选取简洁且可操作性强的海明距离模糊评价法应用于垃圾填埋场地下水质量评价中，以北京市三座垃圾填埋场的地下水为评价对象开展研究，并与常规模糊综合评价法等四种方法的评价结果进行对比。应用海明距离模糊评价法得出，三座垃圾填埋场地下水质量分别为Ⅳ级、Ⅳ级和Ⅲ级，该结论与模糊综合评价等四种方法得到的评价结果基本一致。结果表明，海明距离模糊评价方法应用在垃圾填埋场地下水质量评价中是可行的，结论是可靠的。进一步通过对处于同一水质级别的海明距离大小的对比，可表征地下水污染程度，说明海明距离模糊评价法具有较好的分辨率。

Application of Hamming Distance Fuzzy Mathematics Method in Groundwater Quality Assessment of Municipal Solid Waste Landfills

Fuzzy evaluation method can quantify fuzzy issues in water quality evaluation, and can thus evaluate water pollution levels more accurately and scientifically. On the basis of existing researches in water quality evaluation, Hamming Distance Fuzzy Assessment Method, a kind of brief and feasible method, was selected for groundwater quality assessment of three municipal solid waste (MSW) landfills in Beijing. The assessment results were compared with those by other methods such as conventional fuzzy comprehensive evaluation method. The results of Hamming Distance Fuzzy Assessment Method showed that the groundwater quality levels of three MSW landfills were Ⅳ, Ⅳ and Ⅲ, respectively, which was almost consistent with the conclusions by other four methods including conventional fuzzy comprehensive evaluation method. The results showed that Hamming Distance Fuzzy Assessment Method was feasible for groundwater quality assessment of MSW landfills and the assessment results were reliable. The groundwater pollution degree could be characterized by further contrasting the values of Hamming distance under the same groundwater quality level, which demonstrated that the method had a high resolution.