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 nitrogenin the process of groundwater recharge from riverbed

作　　者：巴图 崔德新 刘广楼 刘小龙 白丽芳 马志伟 BA Tu;CUI De-xin;LIU Guang-lou;LIU Xiao-long;BAI Li-fang;MA Zhi-wei(Inner Mongolia Autonomous Region Institute of Water Resources Science,Hohhot,Inner Mongolia 010051,China;Tongliao Branch Centre of the Inner Mongolia Autonomous Region Hydrology and Water Resources Centre,Tongliao 028000,Inner Mongolia;Water Resources Development Centre of Ertuoq Banner,Erdos,Inner Mongolia 016100)

机构地区：[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

出　　处：《地下水》2024年第2期59-61,共3页Ground water

基　　金：内蒙古自治区水利科技项目(NSK2021-Z1)。

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NH_(4)^(+)-N和NO_(3)^(-)-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:NH_(4)^(+)-N和NO_(3)^(-)-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NH_(4)^(+)-N和NO_(3)^(-)-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NO_(3)^(-)-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。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 NH_(4)^(+)-N and NO_(3)^(-)-N concentrations during recharge of groundwater feeds,control,sterilised,pretreated media and midline groups were selected for comparative experiments.The results show:NH_(4)^(+)-N and NO_(3)^(-)-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 NH_(4)^(+)-N and NO_(3)^(-)-N concentrations,and the indigenous bacteria may play a facilitating role in nitrogen transport and transformation.In contrast,the midline group had lower NO_(3)^(-)-N concentrations and may have been subject to the inhibitory effect of the diversion source.The experimental results in this paper provide a new perspective for understanding the evolution of groundwater quality during riverbed recharge and provide a reference for water quality management during artificial groundwater recharge.

关 键 词：地下水 氮 迁移转化 地下水超采 

分 类 号：P641.12[天文地球—地质矿产勘探]