摘要
对徐州沛沿河2004～2008年5年间水质变化及2008年各月水质变化特征进行分析。结果表明:沛沿河水质呈现好转趋势,2008年国控断面李集桥高锰酸盐指数(CODMn)和氨氮(NH4+-N)年平均值达到GB3838-2002《地表水环境质量标准》Ⅲ类水质标准,但各月间水质呈不稳定趋势,其中以丰水期(7～9月)超标率较高,水质最差;枯水期水质相对于其它时期也较差。在详细分析了造成沛沿河水质不能稳定达标的主要原因后提出了相应的污染防治措施。
The paper analyzed annual change of water quality from 2004 to 2008 and monthly change of 2008 of Peiyan river of Xuzhou. The results indicated that the water quality show the improvement tendency along with year. The annual average concentrations of CODMn and NH4^＋-N on Lijiqiao State Controlling Section met class m of National Water Quality Standard of Surface Water. The water quality varied by month and was poorest during flood season （from July to September） and then during drought season. Finally, water pollution causes were analyzed and some countermeasures were put forward.
出处
《环境科技》
2009年第5期50-52,56,共4页
Environmental Science and Technology
关键词
南水北调
沛沿河
水质变化
污染原因
outh-to-north water transfer project
Peiyan river
Water quality change
Pollution cause
