基于改进等标污染负荷的资江娄底段重金属污染源评估  

Evaluation of Heavy Metal Sources of Zijiang River in Loudi City Based on Improved Equal Standard Pollution Load Model

作　　者：闫峰[1] 王姝涵 吴诗琪 张舒 宋美臻 YAN Feng;WANG Shu-han;WU Shi-qi;ZHANG Shu;SONG Mei-zhen(School of Civil Engineering and Architecture,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学建筑工程学院,江西南昌330031

出　　处：《水电能源科学》2021年第7期65-67,共3页Water Resources and Power

基　　金：国家自然科学基金项目(52069012);湖南省水利科技项目(XSKJ2019081-32);南昌大学科研训练项目(5087)。

摘　　要：传统的等标污染负荷方法忽视了污染物背景值对稀释作用的影响,当背景值占容许限值的比例较大时评价结果偏低,会导致水环境评价偏好。为此,建立了改进的等标污染负荷模型,并将其应用于资江娄底段的重金属评估。评价结果表明,与传统模型相比,改进的等标污染负荷评价结果更为严格,且能有效地反映背景值对稀释作用的影响;资江娄底段重金属等标污染负荷的排序为锑>铅>砷>镉,其中锑的等标污染负荷为31.068×10^(8) m^(3),大约相当于资江娄底段地表水量的87.8%,表明锑对资江娄底段的水环境和水生态具有潜在的危害。The impact of contaminant background value on dilution is not considered in the conventional equal-standard pollution load method.If the background value accounts for a large proportion in the allowable limit,the evaluation result of the conventional equal-standard pollution load method is low,which leads to the overestimation of the water environment evaluation.Therefore,this study established an improved equal standard pollution load model to assess heavy metal load of Zijing River in Loudi City.Compared with the conventional model,the evaluation results show that the improved equal standard pollution load evaluation is more rigorous,and can effectively reflect the impact of the background value on the dilution effect.The ranking of heavy metal equivalent pollution loads of Zijing River in Loudi City is antimony>lead>arsenic>cadmium.The antimony’s equivalent pollution load is 31.068 billion m^(3),which is equivalent to 87.8%of the total surface water resources,which indicates that antimony is potentially harmful to the local water environment and water ecology.

关 键 词：等标污染负荷 背景值 重金属 资江 

分 类 号：X703.1[环境科学与工程—环境工程]