辽河干流铁岭段水污染变化特点及成因分析

Change characteristics and cause analysis of water pollution in Tieling section of Liaohe River main stream

本文依据辽河干流铁岭段水质水量长系列资料,采用水质水量结合评价的方法,全面分析了辽河干流铁岭段水污染变化特点和水污染成因。分析结果表明,辽河干流铁岭段水质化学需氧量基本达到水功能区水质目标要求,氨氮受面源污染影响较大,仍然处于未达到水功能区水质目标要求的状态,但现状年水质处于历史较好水平,区内点污染治理和面源污染控制成效显著。研究成果对区内水污染治理和水资源保护工作具有重要意义。

Based on a series of data of water quality and quantity length in Tieling section of Liaohe River,this paper comprehensively analyzes the characteristics and causes of water pollution in Tieling section of Liaohe River by means of combined evaluation of water quality and quantity.The analysis results show that the chemical oxygen demand of water quality in Tieling section of the Liaohe River main stream basically meets the water quality target requirements of the water function zone,and the ammonia nitrogen is still in the state of not meeting the water quality target requirements of the water function zone due to the influence of non-point source pollution,but the current annual water quality is at a good historical level,and the point pollution control and non-point source pollution control in the area have achieved remarkable results.The research results are of great significance for water pollution control and water resources protection in the region.