Control of disinfection and halogenated disinfection byproducts by the electrochemical process.
The aim of this study was to investigate some aspects of the performance of electrochemical process as an alternative disinfection strategy, while minimising DBPs, for water purification. The study of electrochemical processes has shown free chlorine to be produced, but smaller amounts of stronger oxidants, such as ozone, hydrogen peroxide and OH radicals (*OH), were also generated. The formation of mixed oxidants increased with increasing electric conductivity, but was limited at conductivities greater than 0.6 mS/cm. Using several microorganisms, such as E. coli and MS2 bacteriophage, inactivation kinetic studies were performed. With the exception of free chlorine, the role of mixed oxidants, especially OH radicals, was investigated for enhancement of the inactivation rate. Additionally, the formation and reduction of DBPs was studied by monitoring the concentration of haloacetic acids (HAAs) during the process.
Jung
Y J
YJ
Department of Environmental Engineering, YIEST, Yonsei University, 234 Maeji, Heungup, Wonju city, Gangwon, South Korea.
Oh
B S
BS
Kang
J W
JW
Page
M A
MA
Phillips
M J
MJ
Mariñas
B J
BJ
D000440:Butanols / Q000494:pharmacology; D002713:Chlorine / Q000737:chemistry*; D004203:Disinfection / Q000379:methods*; D004553:Electric Conductivity; D004563:Electrochemistry; D004573:Electrolytes / Q000737:chemistry; D004926:Escherichia coli / Q000187:drug effects / Q000502:physiology; D006861:Hydrogen Peroxide / Q000737:chemistry; D006878:Hydroxides / Q000737:chemistry; D017909:Levivirus / Q000187:drug effects / Q000502:physiology; D016877:Oxidants / Q000737:chemistry; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry
D000440:Butanols; D004573:Electrolytes; D006878:Hydroxides; D016877:Oxidants; D002713:Chlorine; D010126:Ozone; C031356:hydroxide ion; D006861:Hydrogen Peroxide