Title: A Fundamental Study on In-Situ Method for Removal of Nitrate-Nitrogen Contaminated Groundwater
Abstract: One of worsening environmental problems is contamination of groundwater by nitrate-nitrogen supplied by excessive amounts of agricultural fertilizer. In order to remove such nitrate-nitrogen at a site, installation of a permeable reactor barrier (PRB) is thought to be a solution. A sulfur/limestone autotrophic denitrification (SLAD) system is known to be closer to a natural system of removing nitrate from groundwater. In this research, application of this SLAD system to the PRB was examined. Feasibility of the SLAD system was evaluated from a series of experiments using three column reactors. Consequently, nitrate- and nitrite-nitrogen first-order reaction rate constants were obtained from the column experiments and the nitrate- and nitrite-nitrogen profiles were clarified based on the first-order reaction rate. By calculating the designed thickness of the PRB, the application of the SLAD system to the PRB was confirmed to be feasible.
Publication Year: 2006
Publication Date: 2006-05-11
Language: en
Type: article
Indexed In: ['crossref']
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