Nitrogen Migration and Transformation Mechanism in the Groundwater Level Fluctuation Zone of Typical Medium
1
College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
2
Collaborative Innovation Center for Efficient Utilization of Water Resources, Zhengzhou 450046, China
*
Author to whom correspondence should be addressed.
Academic Editor: Aldo Fiori
Water 2021, 13(24), 3626; https://doi.org/10.3390/w13243626
Received: 6 November 2021
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Revised: 11 December 2021
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Accepted: 14 December 2021
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Published: 16 December 2021
(This article belongs to the Special Issue Nitrogen and Phosphorus in Surface- and Ground-Water: Sources, Mechanisms, Processes, and Pathways)
Because of the nitrogen pollution problem in groundwater, the migration conversion mechanism of nitrogen in groundwater level fluctuations was analyzed. Technology and methods through indoor experiments and theoretical analysis were used to study coarse sand, medium sand, and fine sand groundwater level fluctuation in the aeration zone and saturated zone under the situation of nitrogen distribution characteristics, revealing groundwater level fluctuation with the nitrogen migration mechanism. The experimental results showed that the variation range of the nitrate-nitrogen (NO3−−N) concentration with the water level is medium sand > fine sand > coarse sand. The ammonium nitrogen (NH4+−N) concentration showed a downward trend after water level fluctuations, and there were more apparent fluctuations in coarse sand and medium sand. The nitrite nitrogen (NO2−−N) in coarse sand and medium sand first increased the water level and then gradually reached a balance. The sampling points below the water level in fine sand showed a downward trend with fluctuation of the water level, and then gradually reached equilibrium. The results provide a scientific basis for the remediation and treatment of soil and groundwater pollution.
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MDPI and ACS Style
Li, Y.; Bai, G.; Zou, X.; Qu, J.; Wang, L. Nitrogen Migration and Transformation Mechanism in the Groundwater Level Fluctuation Zone of Typical Medium. Water 2021, 13, 3626. https://doi.org/10.3390/w13243626
AMA Style
Li Y, Bai G, Zou X, Qu J, Wang L. Nitrogen Migration and Transformation Mechanism in the Groundwater Level Fluctuation Zone of Typical Medium. Water. 2021; 13(24):3626. https://doi.org/10.3390/w13243626
Chicago/Turabian StyleLi, Yuepeng, Gang Bai, Xun Zou, Jihong Qu, and Liuyue Wang. 2021. "Nitrogen Migration and Transformation Mechanism in the Groundwater Level Fluctuation Zone of Typical Medium" Water 13, no. 24: 3626. https://doi.org/10.3390/w13243626
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