Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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A Combination of Ion Exchange and Electrochemical Reduction for Nitrate Removal from Drinking Water Part II: Electrochemical Treatment of a Spent Regenerant Solution
The process of electrochemical treatment of a solution after strong basic anion exchanger regeneration was studied. The goal of the study was to reduce the nitrate content in the solution to allow its use in a closed loop. Diaphragmless, flow‐through cells in a recirculation mode with and without a fluidizing bed of inert particles in the interelectrode space equipped with copper (Cu) cathodes and activated titanium anodes were used. The temperature was maintained at 20 ° C. To assess the influence of recirculation of the regenerant solution on the quality of the treated water, the effect of the addition of copper ions to the solution, postelectrolysis cathode treatment, and enhanced mass transfer on the electrolysis results with respect to current efficiency and residual nitrate and nitrite concentration were investigated using an artificial solution. On the basis of the experimental results, a laboratory‐scale unit for selective nitrate removal was designed and constructed that integrated ion exchange and electrochemical cell to one assembly. The process of recirculation of regenerant solution was tested using groundwater.
A Combination of Ion Exchange and Electrochemical Reduction for Nitrate Removal from Drinking Water Part II: Electrochemical Treatment of a Spent Regenerant Solution
The process of electrochemical treatment of a solution after strong basic anion exchanger regeneration was studied. The goal of the study was to reduce the nitrate content in the solution to allow its use in a closed loop. Diaphragmless, flow‐through cells in a recirculation mode with and without a fluidizing bed of inert particles in the interelectrode space equipped with copper (Cu) cathodes and activated titanium anodes were used. The temperature was maintained at 20 ° C. To assess the influence of recirculation of the regenerant solution on the quality of the treated water, the effect of the addition of copper ions to the solution, postelectrolysis cathode treatment, and enhanced mass transfer on the electrolysis results with respect to current efficiency and residual nitrate and nitrite concentration were investigated using an artificial solution. On the basis of the experimental results, a laboratory‐scale unit for selective nitrate removal was designed and constructed that integrated ion exchange and electrochemical cell to one assembly. The process of recirculation of regenerant solution was tested using groundwater.
A Combination of Ion Exchange and Electrochemical Reduction for Nitrate Removal from Drinking Water Part II: Electrochemical Treatment of a Spent Regenerant Solution
Paidar, Martin (Autor:in) / Bouzek, Karel (Autor:in) / Jelínek, Luděk (Autor:in) / Matějka, Zdeněk (Autor:in)
Water Environment Research ; 76 ; 2691-2698
01.11.2004
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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