淮河蚌埠至临淮关段表层水质分析与评价

Analysis and assessment of surface water quality of Huaihe River ranged from Bengbu to Linhuaiguan

对2003年12月～2004年7月淮河蚌埠至临淮关段的4个断面水样进行了13个项目的分析,用地表水环境质量标准和内梅罗指数法对各监测断面的表层水质进行评价,用等标污染负荷法分析了各断面的污染负荷和研究河段的主要污染指标.结果表明:不同时期各断面的水质指数不同,水质处于清洁到污染水平;各断面的污染负荷比较接近.研究河段的主要污染指标为NH3-N,在不同时期其污染负荷变化在19.73%～22.91%,其次为BOD5、CODCr和TP,冬、春、夏季其污染负荷比在10%以上.

Thirteen indices of water samples at 4 cross sections of the Huaihe River ranged from Bengbu to Linhuaiguan were analyzed based on the data from December, 2003 to July, 2004. Surface water quality of each cross section was assessed by use of the National Environmental Quality Standard for Surface Water and Nemero index, and the pollution loads and the main pollution indices were analyzed by use of equal standard pollution load method. The results show that water quality indexes of different sections very with time, and that water quality changes from clean to polluted. The pollution loads of different sections are close to each other, the main pollution index being NH3-N, whose pollution loads are 19.73%-22.91%, and the secondary main pollution indices being BODs, COD Cr and TP, whose pollution loads are beyond 10% in winter, spring and summer.