基于综合水质标识指数和对应分析法的校园河道水质评价  

Application of Comprehensive Water Quality Identification Index and Correspondence Analysis To Water Quality Assessment of Qiusuo River

作　　者：雷玉新[1,2] 陈建军[1] 席银 陈武[1] 张霞 徐小峰[1] 刘耀兴[1] 

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]南大(常熟)研究院有限公司,江苏常熟215500

出　　处：《环境科学与管理》2016年第9期190-194,共5页Environmental Science and Management

基　　金：国家青年科学基金(41401586);2015年镇江市研发计划(社会发展)项目专项资金(SH2015001)

摘　　要：以三峡大学的校园河道求索溪为研究对象,利用综合水质标识指数法确定求索溪水质类别,分析其水质时空变化规律,并利用对应分析法得出求索溪中不同监测点的主要污染因子。研究结果表明:求索溪整体的综合水质标识指数为7.423,整体水质为劣Ⅴ类(地表水环境质量标准GB 3838-2002)且黑臭。从时间变化来看,求索溪4月份的水质最差,5月份次之,4、5月份所有监测点的水质都劣于Ⅴ类且黑臭;8月份水质最好,水质为Ⅳ类;从空间分布来看,8个监测点综合水质标识指数均超过6.0,水质为劣Ⅴ类,其中6号监测点的水质相对最好,监测点3号的水质相对最差;对应分析法得出求索溪的整体水体污染程度受总氮因子的影响最大,其次为总磷。该研究拟为求索溪及类似校园河道的水环境治理研究提供基础依据和参考。The water quality types of the Qiusuo River in the China Three Gorges University were investigated in this paper. The water quality types were determined by comprehensive water quality identification index （WQI）method, combined with the corresponding analysis（ CA）for the main pollution factors in different sites of the river. The temporal and spatial variation of water quality in the river was investigated. The results show that the comprehensive water quality identification index of the Qiusuo River was 7. 423, the entire water quality is inferior Class Ⅴ （ National Standard of Environmental Quality GB3838 - 2002） accompanied with black - odor phenomenon. In terms of changes over the time, the water quality of Qiusuo River was the worst in April and followed by which in May, the water quality of all monitoring sites was inferior Class Ⅴ with black - odor. The water quality was best in August and which could be classified as Class Ⅳ. From the spatial distribution, the WQI indexes of all monitoring section were more than 6. 0 and inferior to Class Ⅴ. Comparatively, the water quality of monitoring site 6 was the best and the site 3 was the worst. By the CA analysis, it was concluded that the total nitrogen pollution was the most serious and followed by the total phosphorus. This study aimed to provide theoretical foundation and reference basis for the water environment governance of the urban rivers.

关 键 词：校园河道 水质标识指数法 水质评价 时空变化 对应分析法 污染因子 

分 类 号：X824[环境科学与工程—环境工程]