中国西北典型干旱缺水城市饮水安全的模糊数学评价

Evaluation of fuzzy mathematics about drinking water safety in Northwest China typical arid city

目的应用模糊数学的方法,建立一种适于描述乌鲁木齐市生态系统饮用水水质的逻辑模式,对乌鲁木齐市生态系统饮用水水质的安全状况进行更加科学、全面的分析。方法于2013年6月按照随机原则选取乌鲁木齐市9个采样点,将采集的水样并进行实验室检测后应用模糊数学方法,利用隶属度描述水质分类界限,经模糊矩阵复合运算。结果 9个采样点中,属于Ⅰ类水质的有2个(22.2%),属于Ⅱ类水质的有4个(44.4%),属于Ⅲ类水质的有3个(33.3%),乌鲁木齐市生态系统饮用水水质总体良好,但部分水样有安全隐患。结论应用模糊数学方法综合评价乌鲁木齐市生态系统中饮用水水质的安全状况,较常用的单因子水质评价方法能更全面地反映水环境质量受各监测指标的综合影响。

[Objective]To establish a suitable and logic model for describing the quality of drinking water by using fuzzy mathematics evaluation, and perform scientific and comprehensive analysis of the security of drinking water quality in ecosystem of Urumqi City.[Methods]A total of 9 sampling points were selected randomly in June 2013. On the basis of laboratory testing, fuzzy mathematical method was introduced to describe the drinking water quality classification boundaries with the degree of membership, fuzzy matrix composite was operated.[Results]Of 9 sampling points, 2（22.2 %） were class I, 4（44.4 %） were class II, and 3（33.3 %） were class III. Drinking water quality is generally good in ecosystem of Urumqi City, but some water samples had safety risks. [Conclusion]Applying of fuzzy mathematics comprehensive evaluation about drinking water quality in Urumqi ecosystem overcomes the shortage of single index evaluation system, objectively reflects the actual status of comprehensive drinking water quality.