浑河流域水质时间及空间演变趋势规律分析

Analysis of Temporal and Spatial Evolution of Water Quality in Hunhe River Basin

通过对浑河干流2016-2018年的4个断面的水环境质量进行了调查可知,浑河干流大伙房水库以上水质为II类,而大伙房水库以下河段氨氮浓度沿程逐渐升高现象,整个河段CODCr基本能满足水质要求,应用季节性Kendall检验法的数学模型对6个断面的水质进行分析,其结果表明氨氮浓度沿程也是呈整体上升趋势,和4个断面分析基本一致。

By investigating the water environmental quality of the four sections of the Hunhe River from 2016 to 2018,it can be seen that the water quality above the Dahuofang Reservoir of the Hunhe River is Class II,and the ammonia nitrogen concentration in the lower reaches of the Dahuofang Reservoir gradually increases along the way Phenomenon,the whole river CODCr can basically meet the water quality requirements.The mathematical model of seasonal Kendall test method is used to analyze the water quality of 6 sections.The results show that the ammonia nitrogen concentration also shows an overall upward trend along the course,which is basically consistent with the analysis of 4 sections.