Keywords:Johkasou, Ultra Violet Light Emitting Diode, Indicator Bacteria, Irradiation time
As a domestic wastewater treatment facility in Japan, Johkasou are suitable for use in areas with low population density. In the Johkasou, household waste water is treated in situ, and finally chlorination is performed, but a solid chlorinating agent is used, and the dissolution amount is affected by the water temperature, so the disinfection effect is unstable Is a problem. Therefore, in this research, we applied UV-LED developed in recent years as Johkasou disinfection, and examined the disinfection effect using coliform bacteria, coliform coli and enterococcus as indicator bacteria.
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