浑河主要污染物入河总量特征分析

以辽河流域4条河流中浑河2004—2008年入河总量监测数据为基础,统计浑河COD和氨氮入河总量变化及特征,分析污染物主要来源及所占比重,统计抚顺和沈阳两城市河段的比例。由此得出,2007年和2008年浑河COD和氨氮入河总量较前3a有所下降,但仍居于辽河流域4条河流前列,浑河COD和氨氮入河量主要来源于支流和直排市政排污口,重点污染源对总量贡献率较小,沈阳城市段由于城市污水排放量大,COD和氨氮入河总量明显高于抚顺,特别是氨氮入河量占总量的90%左右,是浑河氨氮污染的主要来源,2008年抚顺段COD入河量所占比重增加。

On the basis of the pollutant fluxes data from 2004 to 2008, the changes and the characteristics of COD and NH3-N fluxes into Hunhe River were analyzed including the pollutant source, the ratio, the distribution to the Fushun city and city of Shenyang. The Analysis results showed that the COD and NH3-N fluxes into Hunhe River were dropped between 2007 and 2008, but still ranking number one in the four main streams of Liaohe Basin. The main source of the pollutant fluxes into Hunhe River came from its tributaries and the municipal sewage draining exits. The COD and NH3-N fluxes of Shenyang city were obviously higher than that of Fushun city due to its more urban wastewater. The NH3-N fluxes of Shenyang city were the main source for Hunhe River as the percent was about 90%. The percent of COD fluxes in Fushuu section was increased in 2008.