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首页> 外文会议>GeoShanghai International Conference; 20060606-08; Shanghai(CN) >A Fundamental Study on In-situ Method for Removal of Nitrate-Nitrogen Contaminated Groundwater
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A Fundamental Study on In-situ Method for Removal of Nitrate-Nitrogen Contaminated Groundwater

机译：原位去除硝酸盐氮污染地下水的方法基础研究

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摘要

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.
机译：日益严重的环境问题之一是过量农业肥料供应的硝酸盐氮污染了地下水。为了在现场去除这种硝酸盐-氮，人们认为安装渗透性反应器屏障（PRB）是一种解决方案。硫/石灰石自养反硝化（SLAD）系统更接近于从地下水中去除硝酸盐的自然系统。在这项研究中，研究了该SLAD系统在PRB中的应用。使用三个塔式反应器通过一系列实验评估了SLAD系统的可行性。因此，通过柱实验获得了硝酸盐和亚硝酸盐氮的一级反应速率常数，并根据一级反应速率澄清了硝酸盐和亚硝酸盐氮的分布。通过计算PRB的设计厚度，可以确定将SLAD系统应用于PRB是可行的。

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