农业面源污染负荷计算方法及输出系数取值的分析  

作　　者：杨文慧 于新花 杨彦霞 

机构地区：[1]宁夏大学土木与水利学院,宁夏银川750021

出　　处：《环境保护与循环经济》2023年第10期43-48,共6页environmental protection and circular economy

摘　　要：农业面源污染输出系数法中输出系数受多种因素影响,研究者选取的侧重点不同。通过参考相关文献,对农业面源污染源及各自的特点和农业面源污染负荷计算方法优缺点进行了对比分析,选择目前国内外应用较为广泛的输出系数法,并对输出系数进行了归纳总结。研究发现,畜禽养殖污染和农村生活污染的取值大多参考原环境保护部推荐的取值,畜禽养殖污染COD取24.82、NH3-N取2.52、TP取1.01、TN取6.11;农村生活输出系数COD取14.13、NH3-N取0.9、TP取0.16、TN取1.58;不同土地利用类型的输出系数相对来说水田的高于旱田;水田的TP值与TN值分别集中分布在1~2和12~23之间,旱田的TP值与TN值分别集中分布在0.9~2.3和15~33之间,为学者选取系数提供参考。Because the output coefficient of agricultural non-point source pollution output coefficient method is affected by a variety of factors,researchers choose different emphasis.By referring to the relevant literature on agricultural non-point source pollution sources and their characteristics and the advantages and disadvantages of agricultural non-point source load calculation methods were compared and analyzed,the output coefficient method which is widely used at home and abroad was selected,and the output coefficient was summarized.It was found that most of the values of livestock and poultry pollution and rural livelihood pollution were taken with reference to the values recommended by the Ministry of Environmental Protection of the People's Republic of China,and the COD of livestock and poultry pollution was taken as 24.82,NH3-N was taken as 2.52,TP was taken as 1.01,and TN was taken as 6.11;and the output coefficient of rural livelihood COD was taken as 14.13;NH3-N was taken as 0.9,TP was taken as 0.16,and TN was taken as 1.58.The output coefficients of different land use types of paddy field were higher than that of dry field,and the TP and TN values were concentrated in 1-2 and 12-23 respectively,TP value and TN value of dry field are concentrated in 0.9-2.3 and 15-33 respectively,which provides reference for scholars to select the coefficient.

关 键 词：农业面源污染 输出系数法 输出系数 

分 类 号：X522[环境科学与工程—环境工程]