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KMID : 0896220030230010373
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Journal of Daegu Health College
2003 Volume.23 No. 1 p.373 ~ p.384
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Basic Study of Denitrogenation Process Development by CI^(-) Type Anion Exchange Resin
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Chae Yong-Gon
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Abstract
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Ion exchange performance to remove nitrate in water was studied using commercially available strong base anion exchange resin of Cl^(-) type in the continuous column reactors. The performance was tested using the effluent concentration histories for continuous column reactor as a function of time until resins were exhausted or reached ionic equilibrum between resin and solution. With large resin amount or low initial concentration, nitrate removal characteristics for a typical gel-type resin was increased. On considering the relation between the breakthrogh capacity and nitrate concentration of the influent, the use of anion exchange resin were suitable for the higher order water treatment. The nitrate removal of above 90% could be possible until effluent of above 650 BV passed to the column. Thus, the commercially available strong base anion exchange resin of Cl^(-) type the used in this study could be effectibvely used as economic material for treatment of the grounwater. The breakthrogh curves showed the sequence of resin selectivity as SO_(4)^(2-)＞ NO_(3)^(-)＞ NO_(2)^(-)＞ HCO_(3)^(-). The results of this study could be scaled up and used as a design tool for the water purification system of the real groundwater and surface water treatment processes.
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KEYWORD
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