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Simulating Experiment of NO- 3 -N in Vertical System of Riverbank Filtration(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2006年第03期
Page:
92-96
Research Field:
Publishing date:

Info

Title:
Simulating Experiment of NO- 3 -N in Vertical System of Riverbank Filtration
Author(s):
HUANG Rui-hua1; WU Yao-guo3; LI Yun-feng2; YANG Bing-chao2
1. School of Chemistry Engeering, Ocean University of China, Qingdao 266003, Shandong China; 2. School of Environmental Sciences and Engineering, Chang’ an University, Xi’an 710054, Shaanxi, China; 3. Department of Chemistry Engeering, Northwest Polythenical University, Xi’an 710072, Shaanxi, China
Keywords:
NO-3-N;  environmental behaviors;  riverbed;  vertical system of filteration filtration;  simulating experiment
PACS:
X143
DOI:
-
Abstract:
The soil column was used to model the vertical infiltration of NO-3-N in the riverbank. In the experi- ment, the KNO3solution is added to the soil column to study the environmental behaviors of NO-3-N in the verti- cal system of riverbank filtration and the purification mechanism of nitrogen pollution. The results indicate that NO-3-N takes part in the dissimilation-deoxidization and de-nitrification during the process of River bank filtra- tion. Under the influence of above processes, the NO-3-N is wiped off though the riverbank filtration, the remov- al efficiency reaches almost 100 percent. But dissimilation-deoxidization can lead that the rising of concentration of NH+4-N, which is the disadvantage of this process.

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Last Update: 2006-09-20