河床补给地下水过程中氮的迁移转化规律研究
Study on the migration and transformation pattern of nitrogen in the process of groundwater recharge from riverbed
巴图 1崔德新 1刘广楼 2刘小龙 2白丽芳 3马志伟3
作者信息
- 1. 内蒙古自治区水利科学研究院,内蒙古呼和浩特 010051
- 2. 内蒙古自治区水文水资源中心通辽分中心,内蒙古通辽 028000
- 3. 鄂托克旗水利事业发展中心,内蒙古鄂尔多斯 016100
- 折叠
摘要
本文通过室内动态模拟实验,聚焦于河床补给过程中地下水中氮组分的迁移转化.在考虑入渗水对补地下水给过程中NH4+-N和NO3--N浓度的影响时,选择了对照组、灭菌组、预处理介质组和中线组进行对比实验.结果表明:NH4+-N和NO3--N浓度在地下水中呈现复杂的时空变化,不同处理组的水质演化存在一定差异.其中,预处理介质组表现出较高的NH4+-N和NO3--N浓度,土著菌可能在氮的迁移和转化中发挥着促进作用.与之相反,中线组的NO3--N浓度较低,可能受到引水源的抑制效应.本文的实验结果为理解河床补给过程中地下水水质演化提供了新的视角,为地下水人工补给过程中的水质管理提供参考.
Abstract
This paper focuses on the migration and transformation of nitrogen components in groundwater during riverbed recharge through laboratory dynamic simulation experiments.In considering the effect of infiltration water on NH4+-N and NO3--N concentrations during recharge of groundwater feeds,control,sterilised,pretreated media and midline groups were selected for comparative experiments.The results show:NH4+-N and NO3--N concentrations show complex spatial and temporal variations in groundwater,with some differences in water quality evolution between treatment groups.Among them,the pretreated media group showed higher NH4+-N and NO3--N concentrations,and the indigenous bacteria may play a fa-cilitating role in nitrogen transport and transformation.In contrast,the midline group had lower NO3--N concentrations and may have been subject to the inhibitory effect of the diversion source.The experimental results in this paper provide a new per-spective for understanding the evolution of groundwater quality during riverbed recharge and provide a reference for water quali-ty management during artificial groundwater recharge.
关键词
地下水/氮/迁移转化/地下水超采Key words
underground water/nitrogen/migration and transformation/groundwater over-exploitation引用本文复制引用
基金项目
内蒙古自治区水利科技项目(NSK2021-Z1)
出版年
2024
NETL
NSTL
万方数据