北方干河流域径流面源污染特性及污染负荷建模分析  

Modeling Analysis of Runoff Non-point Source Pollution Characteristics and Pollution Load in Northern dry River Basin

作　　者：郑少辉 ZHENG Shao-hui(Yutian County Branch of Tangshan Ecological&Environment Bureau,Tangshan,Hebei 063000,China)

机构地区：[1]唐山市生态环境局玉田县分局,河南唐山063000

出　　处：《四川环境》2022年第5期137-142,共6页Sichuan Environment

摘　　要：北方干河流域径流受到外部温度的影响,容易产生较大的潜在蒸发量,影响累积污染排放率,导致污染削减强度过小,污染分析结果不准确,针对该问题,研究北方干河流域径流面源污染特性及污染负荷建模分析。采用水文循环作为径流驱动力,数值分析北方干河流域径流影响因子,确定面源污染的扩散速度,输出面源污染特性,采用SCS径流曲线模拟地表流量数值,确定潜在蒸发量数值,控制累积污染排放率,构建径流面源污染特性及污染负荷模型,完成北方干河流域径流面源污染特性及污染负荷建模分析。采集径流污染数据,输入面源污染数据,对比测试结果表明:该模型的削减强度数值最大,符合实际径流面源污染态势。The runoff in the northern dry river basin is affected by the external temperature,which is easy to produce large potential evaporation,affect the cumulative pollution emission rate,resulting in too small pollution reduction intensity and inaccurate pollution analysis results.To solve this problem,this paper studied the runoff non-point source pollution characteristics and pollution load modeling analysis in the northern dry River Basin.The hydrological cycle is used as the runoff driving force to numerically analyze the Runoff Impact Factors in the northern dry river basin,determine the diffusion rate of non-point source pollution,output the characteristics of non-point source pollution,simulate the surface flow value using SCS Runoff Curve,determine the potential evaporation value,control the cumulative pollution emission rate,and establish the runoff non-point source pollution characteristics and pollution load model.Complete the modeling and analysis of runoff non-point source pollution characteristics and pollution load in the north dry river basin.Collect runoff pollution data and input non-point source pollution data.The comparative test results show that the reduction intensity of the model is the largest,which is in line with the actual runoff non-point source pollution.

关 键 词：北方干河流域 径流 面源污染特性 污染负荷 潜在蒸发量 累积污染排放率 

分 类 号：X824[环境科学与工程—环境工程]