基于物元分析法的沱江地表水水质评价  

Application of matter-element model in the water quality evaluation of Tuojiang River

作　　者：肖玖金[1,2] 谭周亮[1] 李旭东[1] 王红磊 

机构地区：[1]中国科学院,成都生物研究所,成都610041 [2]中国科学院研究生院,北京100049 [3]四川省环境评估中心,成都610000

出　　处：《安全与环境学报》2011年第1期104-108,共5页Journal of Safety and Environment

基　　金：四川省科技支撑计划项目(2009SZ0215);国家863项目(2008AA06A409);国家科技支撑计划项目(2008BAK51B07)

摘　　要：利用物元分析法构建地表水环境质量评价综合物元模型,对沱江出水口2000—2008年的水环境质量进行评定。结果表明,沱江出水口地表水水质除2002—2004年超过地表水Ⅲ类标准外,其余年均能达到表水Ⅲ类标准。2008年水质变化分析显示,丰水期和枯水期的水质均能满足地表水Ⅲ类标准要求,但在平水期个别月份水质仍有超标现象发生。对物元分析法和模糊评价法的评价结果比较显示,两种方法评价结果基本吻合,与监测资料取得了较好的一致性。Based on the water quality monitoring data （ including pH, DO, permanganate index, BOD5, NH3 - N, oils and volatile phenolic compounds） ranging from 2000 to 2008 and the water environment quality standard （GB 3838--2002）, an integrated matter-element model was established for the evaluation of surface water environment. This integrated model was used to assess the environmental quality of Tuojiang River, which is one of the most important rivers in Sichuan province. The results showed the water quality satisfied gracie III water quality standard （GB 3838--2002） except for the period from 2002 to 2004. The percentage of grade II and grade IV water quality is 66.7% and 33.3%, respectively. No grade I, grade III and grade V water quality were identified during the studied years. NH3 - N and oils were the dominant pollutants which led to two serious pollution events in March and April, 2004. In order to study the seasonal water quality changes and compare the different evaluation methods of Tuojiang River, the data of 2008 was further analyzed. The results showed the water quality in wet period and dry period satisfied grade III water quality, except for the certain months where grade llI water quality was exceeded during level period. Meanwhile, compared with the results of fuzzy synthetic evaluation on Tuojiang River surface water quality, the data showed good agreement with that of the matter-element method. This assessment result is also consistent with the actual investigation data. Seasonal water quality grades and stream flow were analyzed in the present paper, indicating that low stream flow was related to bad water quality. More emphasises should be paid to the comprehensive river management, especially the treatment of main pollutants of Tuojiang River for the safety of surface water quality. The matter-element model has provided objective and reliable results and it is a convenient method to evaluate the water quality.

关 键 词：水处理 水质评价 物元分析法 水环境质量 沱江 

分 类 号：X824[环境科学与工程—环境工程]