BIOGEOCHEMICAL CHARACTERISTICS OF NITROGEN MIGROGEN MIGRATION AND TRANSFORMATION IN SUBSURFACE FLOW BELT DRIVEN BY RIVER COLLECTION

PAN Jun; LI Rui-fang; MENG Xiang-tao; YE Meng-xing

doi:10.13205/j.hjgc.202108008

Volume 39 Issue 8

Jan. 2022

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PAN Jun, LI Rui-fang, MENG Xiang-tao, YE Meng-xing. BIOGEOCHEMICAL CHARACTERISTICS OF NITROGEN MIGROGEN MIGRATION AND TRANSFORMATION IN SUBSURFACE FLOW BELT DRIVEN BY RIVER COLLECTION[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(8): 62-68. doi: 10.13205/j.hjgc.202108008

Citation:

PAN Jun, LI Rui-fang, MENG Xiang-tao, YE Meng-xing. BIOGEOCHEMICAL CHARACTERISTICS OF NITROGEN MIGROGEN MIGRATION AND TRANSFORMATION IN SUBSURFACE FLOW BELT DRIVEN BY RIVER COLLECTION[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(8): 62-68. doi: 10.13205/j.hjgc.202108008

Citation:

PAN Jun, LI Rui-fang, MENG Xiang-tao, YE Meng-xing. BIOGEOCHEMICAL CHARACTERISTICS OF NITROGEN MIGROGEN MIGRATION AND TRANSFORMATION IN SUBSURFACE FLOW BELT DRIVEN BY RIVER COLLECTION[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(8): 62-68. doi: 10.13205/j.hjgc.202108008

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BIOGEOCHEMICAL CHARACTERISTICS OF NITROGEN MIGROGEN MIGRATION AND TRANSFORMATION IN SUBSURFACE FLOW BELT DRIVEN BY RIVER COLLECTION

doi: 10.13205/j.hjgc.202108008

College of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China

Received Date: 2019-10-10
Available Online: 2022-01-18

Abstract

Abstract

In order to study the migration, transformation and REDOX zoning of tri-nitrogen in subsurface flow zone driven by riverside mining, soil samples and water samples were collected from subsurface flow zone in different periods of riverside collection to analyze the transformation process and characteristics of tri-nitrogen, and the migration and transformation law and mechanism were determined by combining dissolved oxygen, redox potential, nitrate and nitrite content and dominant bacteria. The results showed that in the process of infiltration, the river water firstly entered the oxidation zone in -6~1.5 m offshore, O₂ reacted with organic matters to release CO₂, then went to the oxidation-reduction transition zone of weak oxidation environment in 1.5~17 m offshore, nitration and denitrification reactions occurred under the action of nitrifying bacteria and denitrifying bacteria, and finally entered into the reduction zone of anoxic environment in 17~350 m offshore, denitrification happened under anoxic condition. The dominant bacteria had some connection and response to Redox Zoning. Low water level in dry season was conducive to reduce DO, NH₃-N and NO₃^--N more quickly, so the REDOX distance was shorter in dry season and longer in wet season. Driven by riverside collection, hydrodynamic conditions changed with different periods, and there were differences in various aspects in the process of river recharge to groundwater, which affected the migration and transformation of nitrogen into underground media.
- undercurrent belt,
- nitrogen element,
- migration,
- river collection

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References(33)

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