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Removal of Nitrate in Column Reactors Using Surfactant Modified Zeolite  

박규홍 (중앙대학교 토목공학과)
이동호 (지오웍스)
Publication Information
Journal of Soil and Groundwater Environment / v.8, no.2, 2003 , pp. 55-61 More about this Journal
Abstract
The objective of this study was to investigate the characteristics of nitrate removal by conducting the column test in order to see the performance of surfactant modified zeolite (SMZ) as a permeable reactive barrier material. The prediction of nitrate removal was tested using the one-dimensional advective-dispersive model fitted to the experimental breakthrough curve. A methodology for scaling up to in-situ permeable reactive barrier was also proposed. The breakthrough of nitrate in the column packed with SMZ was well predicted using linear equilibrium adsorption model. The breakthrough time and half-life obtained by breakthrough experiment with variation of flowrates were decreased with the increase of flowrates. When 10㎥/day of groundwater containing the 50 mg/l of nitrate is to be treated to satisfy the potable water quality criteria (10 mg/l) by SMZ reactive barrier, 300 tons of SMZ and about 6 years of breakthrough time will be required, suggesting that 165 million wons are needed as barrier material expenses in each 6 years besides the initial design and construction expenses and the minimal monitoring and maintenance expenses.
Keywords
SMZ; Surfactant-modified zeolite; Permeable reactive barriers; Nitrate; Column reactors; Advection-dispersion model;
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Times Cited By KSCI : 1  (Citation Analysis)
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