鞍山市海城河水质演变及主要参数间相关性分析

Water quality evolution of Haicheng River in Anshan City and correlation analysis of main parameters

科学评价海城河水质现状和研究水质的演变趋势,对海城河水系污染治理具有十分重要的意义。本文选取海城河上游红土岭监测断面和下游海城监测断面丰水期、平水期和枯水期监测数据进行分析,并通过皮尔森相关系数对水质各参数之间的相关性进行分析。结果表明,海城河主要污染物为总氮,丰水期总氮超标情况要优于平水期和枯水期,在总氮不参评的情况下,水质良好;溶解氧、高锰酸盐指数、五日生化需氧量、化学需氧量、总磷、总氮之间以及与水温、水位、流量之间都存在一定的相关性,诠释了不同时期不同条件下的水质演变机理,部分参数受水温影响较大,说明水质好坏也受季节的影响。研究成果可为研究区域性水质长效管理、水质治理提供重要支撑。

It is of great significance for pollution control of Haicheng River system to scientifically evaluate the present situation of water quality and study the evolution trend of water quality.In this paper,the data of flood season,normal season and dry season of Hongtuling Monitoring section in the upper reaches of Haicheng River and Haicheng Monitoring section in the lower reaches are selected for analysis,and the correlation between water quality parameters is analyzed by Pearson correlation coefficient.The results show that the main pollutant of Haicheng River is total nitrogen,which exceeds the standard in the wet season better than in the normal season and dry season,and the water quality is good without total nitrogen.Dissolved oxygen,permanganate index,five-day biochemical oxygen demand,chemical oxygen demand,total phosphorus and total nitrogen have certain correlations with water temperature,water level and flow rate,which explains the evolution mechanism of water quality in different periods and under different conditions.Some parameters are greatly influenced by water temperature,indicating that water quality is also affected by seasons.The research results provide important support for the study of regional long-term water quality management and water quality control.