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Inactivation of Sewage Microorganisms using Multi-Plasma Process
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 Title & Authors
Inactivation of Sewage Microorganisms using Multi-Plasma Process
Kim, Dong-Seog; Park, Young-Seek;
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For the field application of dielectric barrier discharge plasma reactor, a multi-plasma reactor was investigated for the inactivation of microorganisms in sewage. We also considered the possibility of degradation of non-biodegradable matter () and total organic carbon (TOC) in sewage. The multi-plasma reactor in this study was divided into high voltage neon transformers, gas supply unit and three plasma modules (consist of discharge, ground electrode and quartz dielectric tube). The experimental results showed that the inactivation of microorganisms with treated water type ranked in the following order: distilled water > synthetic sewage effluent >> real sewage effluent. The dissolved various components in the real sewage effluent highly influenced the performance of the inactivation of microorganisms. After continuous plasma treatment for 10 min at 180 V, residual microorganisms appeared below 2 log and absorbance (showing a non-biodegradable substance in water) and TOC removal rate were 27.5% and 8.5%, respectively. Therefore, when the sewage effluent is treated with plasma, it can be expected the inactivation of microorganisms and additional improvement of water quality. It was observed that the -N and -P concentrations of sewage was kept at the constant plasma discharging for 30 min. On the other hand, -N concentration was increased with proceeding of the plasma discharge.
Dielectric barrier discharge plasma;Inactivation;Sewage effluent;E. coli;
 Cited by
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