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KMID : 1024520110200091115
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Journal of the Environmental Sciences
2011 Volume.20 No. 9 p.1115 ~ p.1124
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Effect of Water Quality of Artificial Sewage on E. coli Disinfection Using Electrolysis Process
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Park Young-Seek
Kim Dong-Seog
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Abstract
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There is an increasing incidence in health problems related to environmental issues that originate from inadequate treatment of sewage. This has compelled scientists to engage in innovative technologies to achieve a effective disinfection process. Electrolysis has emerged as one of the more feasible alternatives to conventional disinfection process. The objectives of the present paper were to investigate the effect of chemical characteristics on oxidant formation and Escherichia coli (E. coli) disinfection in synthetic sewage effluents. The influence of parameters such as COD, SS, T-N and T-P were investigated using laboratory scale batch reactor. The results showed that the higher COD, T-N and T-P concentration, the lower N, N-Dimethyl-4-nitrosoaniline (RNO, indicator of the generation of OH radical) degradation and E. coli disinfection was observed. The order of effect of RNO degradation and E. coli disinfection was T-P > COD > T-N > SS. When 4 parameter of water quality were worked simultaneously, oxidants formation and disinfection was decreased with increase of the concentration of sewage. To increase of the disinfection performance, the increase of disinfection time or electric power was need.
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KEYWORD
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Water quality, Disinfection, Sewage, E. coli, Electrolysis, Oxidants
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