Residual Chlorine Distribution and Disinfection during Electrochemical Removal of Dilute Ammonia from an Aqueous Solution

Jea-Keun Lee; Keyoung-Ran Lee; Sung-Ho Hong; Kyoung-Hee Kim; Byung-Hun Lee; Jun-Heok Lim

doi:10.1252/jcej.35.285

Safety, Environment and Energy

Residual Chlorine Distribution and Disinfection during Electrochemical Removal of Dilute Ammonia from an Aqueous Solution

Jea-Keun Lee, Keyoung-Ran Lee, Sung-Ho Hong, Kyoung-Hee Kim, Byung-Hun Lee, Jun-Heok Lim

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Keywords: Electrochemical Oxidation, Ammonia Removal, Residual Chlorine, Current Density, Disinfection

JOURNAL RESTRICTED ACCESS

2002 Volume 35 Issue 3 Pages 285-289

DOI https://doi.org/10.1252/jcej.35.285

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Abstract

Experiments on the electrochemical oxidation of ammonia in artificial seawater are carried out in a lab-scale electrochemical apparatus. The operating parameters are current density (16–66 A/m²) and hydraulic residence time in a reactor (30–90 sec). The ammonia concentration in the effluent of the reactor exponentially decreases with increasing the current density and the hydraulic residence time, while the concentration of chlorine residuals increases. Most of the chlorine residuals are free available chlorine and the remainder is dichloramine. A strong disinfection characteristic can be seen during electrochemical treatment of ammonia.

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