以汾河水库及上游河段为例，运用加拿大水质指数（CCME WQI）方法，选取《地表水环境质量标准》表1中的23个水质监测项目（水温除外），对汾河水库的水环境质量进行了评价；同时选取10项水质监测项目，包括pH、溶解氧、BOD5、COD、总氮、氟化物、石油类、总磷、挥发酚、氨氮，对汾河水库上游河段3个监测断面的地表水环境质量进行了评价，同时采用加拿大水质指数和单因子评价法对监测数据分析比对。结果显示：同单因子评价法相比，CCME WQI考虑了3个因素（超标范围F1、超标频率F2、超标幅度F3）的综合影响，其评价结果更符合汾河水库及上游河段水质的现状。CCME WQI的量化为环境管理部门带来便利。但评价标准和水质监测项目及数目对CCME WQI评价结果有一定的影响，仍需深入研究。
Abstract
Take Fenhe Reservoir and upstream reach for example, Environment Water Qaulity Index(CCME WQI) method of Canadian Council of Ministers is used to evaluate water quality of Fenhe Reservoir, which selects 23 water quality monitoring items except water temperature stipulated in Table 1 of surface water environmental quality standard as water monitoring parameters. At the same time, CCME WQI is used to evaluate water quality of three sampling sites of the Fenhe Reservoir upstream reach, which selects pH, DO, NH3-N, BOD5, COD, TN, TP, petroleum, F- and volatile phenol as 10 water monitoring parameters. The comparison and analysis of CCME WQI and single factor evaluation method are carried out. The results show that the CCME WQI method considers the combination of “exceeding scope, exceeding frequency and exceeding amplitude”, and the evaluation results of CCME WQI are much closer to reality than single-factor-method. The quantification of CCME WQI also provides convenience for environmental management. However, the evaluation of standard and the items and number of water quality monitoring have a certain impact on the evaluation results of CCME WQI, which still needs to be further studied.
关键词
CCME WQI /
汾河水库 /
水质评价
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Key words
CCME WQI /
fenhe reservoir /
water quality assessment
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