Estimation Method of Denitrification Rate Constant in Aquifer
The concentration variation of the nitrate ion in aquifer is influenced by not only the denitrification, but the recharge dilution, sorption of aquifer, etc, thus it is difficult to calculate the denitrification rate directly. In this paper, the methods of identifying the denitrification and estimation of denitrification rate constant were proposed using the field data in aquifer. Chloride ion, which is more conservative than others ions, was selected as reference ion to indicate the variation of nitrate ion concentration only caused by the denitrification. Accordingly, using the variation of chloride and nitrate concentration can identify the denitrification. In the paper, three concentration variation conditions about two kind of ion were presented. In addition, initial concentration of nitrate can be obtained by linear interpolation with the concentration of chloride ion; Furthermore denitrification rate constant can be estimated by the first-order kinetics equation. The results of case study show that its an effective method for identifying the denitrification and estimating the denitrification rate constant.
CHENG Donghui LIU Mingzhu CHEN Honghan HE Jiangtao HE Guoping LIN Jian
College of Environmental Sciences and Engineering Chang’an University Xi’an, China School of Water Resources and Environment China University of Geosciences Beijing, China Beijing Institute of Water Beijing Municipal Bureau of Water Authority Beijing, China Beijing Institute of Geological Engineering Beijing Municipal Bureau of Geology and Minerals Prospec
国际会议
成都
英文
1-3
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）