1996-2005年辽河干流沈阳段水质污染状况调查

目的：了解和掌握辽河沈阳段1996年～2005年水质污染状况并分析其变化原因。方法：本次调查数据来源于沈阳环境监测中心站1996年～2005年监测结果，依据GB3838—2002《地表水环境质量标准》进行水质评价。结果：1996年-2005年期间，氨氮在波动的前提下呈逐年上升趋势；总磷含量在2001年～2004年逐年增加，2005年又陡然下降；BOD5在1996年～1999年间呈现较稳定状况，步入2000年后，呈现大幅度波动，2003年达10年来的峰值，2003年后BOD5开始下降；高锰酸盐指数在2003年达到最高点，以后又逐渐回落，在2005年达到一个比较低的水平；石油类变化在1996年～2000年期间一直处于较稳定的状态。结论：1996年～2005年辽河干流沈阳段水质基本处于中度污染状况，只有在2003年接近重度污染。因此，加强辽河干流沈阳段水体环境的修复和保护，仍是沈阳市政府应高度重视的问题。

Water pollution survey in shenyang section of liaohe river

Objective： To understand and predominate the water pollution situation in Shenyang section of Liaohe River from 1996 - 2005, and then to analyze the reason for changing. Methods ： The survey data from monitoring results during 1996 to 2005 of Shenyang Environmental Monitoring Center Station were collected, water quality was assessed according to GB3838-2002 ＂surface water quality standard＂. Results： During 1996 to 2005 period, a rising wave of the ammonia content year by year were found, total phosphorus content from 2001 to 2004 increased year by year, but suddenly dropped in 2005, BOD5 content from 1996 to 1999 showed a more stable situation, but displayed greatly fluctuations after 2000, and then an＇ived at a peak in 2003, started to decline after 2004. Permanganate index reached its highest point in 2003 and backed to a relatively low level gradually in 2005. The change of oil from 1996 to 2000 was in a stable state. Conclusion： Water pollution in Shenyang section of Liaohe River was basically in moderate condition from 1996 to 2005, only closed to heavily pollution in 2003. Therefore, it is still an important issue that the Shenyang city government should solve to strengthen water restoration and protection in Shenyang section of Liaohe River. heavily pollution in 2003. Therefore, it is the Shenyang city government should attach great importance to the issue that the strengthening of water restoration and protection in Liaohe River main stream of Shenyang section.