模糊综合评价法在北碚主要支流河流水质评价中的运用

摘要：本文以重庆市北碚区的三条主要支流河流璧北河、磨滩河、黑水河为研究对象，运用模糊数学综合评价模型对5个监测断面和11个污染因子进行了综合评价。评价结果表明，5个断面水质具有明显的季节变化，并表明黑水河流域地表水质总体状况最好，除了偏岩断面2月份为Ⅲ级水质外，均处于Ⅰ级和Ⅱ级，符合功能水环境质量标准；而磨滩河的水质最差，甚至出现了劣Ⅴ级水质，可见其污染严重，需要治理；璧北河水质较好，2月份为Ⅳ类水质，5月份为Ⅲ级水质，8月份的河水水质较好，为Ⅱ类。评价结果为污染控制提供了科学依据。

Utilization of Fuzzy Mathematical Method in Environmental Quality Evaluation of Three Tributary Rivers of Beibei

Abstract: Three tributary rivers (which are Bibei River, Motan River and Heishui River) in Beibei District of Chongqing were studied in this paper. Comprehensive evaluation of five monitoring cross sections and eleven pollution factors were conducted by fuzzy mathematical comprehensive evaluation model. The evaluation result showed that the water quality of the five monitoring cross sections has clearly seasonal changes, and the surface water quality of Heishui River is the best in the whole year, with Grade Ⅰ and Ⅱwater quality standard, met the standards of water environmental quality in addition to Pianyan section was Grade Ⅲ in February. However, water quality of Motan River is the worst, even with a bad Grade Ⅴ water quality standard, so it was in serious pollution and needs to be treated. The water quality were in Grade Ⅳ water quality standard in February and Grade Ⅲ in May and Grade Ⅱ in August. The evaluation results provide a scientific basis for pollution control.