河流汛期污染与源解析

River pollution in flood season and resource analysis

对河流汛期污染的特点、产生原因与产生条件进行深入分析并进行产生源定量解析。结果表明汛期污染引起河流断面增加的 COD通量枯水年份约占全年 COD通量的 5 5 %～ 68% ,丰水年可达 91%～ 96%。在汛期 COD增加量中 ,河流本底淮干 1#断面约占 64 % ,洪河 2 #和沙颍河 3 #断面约占 2 5 %～ 3 8% ;三断面水土流失引起增加量约占 2 9%～ 41% ,其他因素增加量淮干为 6% ,另两断面为 2 6%～ 41%。

The character, reason and resource of Huai river pollution in flood season were analysed. The results showed that the percents of COD load arised in flood season were 55%~68% of total load in a dry year, and 91%~96% in a flood year.