| "Two lagoons in Monsoon Asia are selected for the targets of this research to compare the effect of sewerage system on wastewater quality. As results, the concentration in wastewater of one type is higher than that of the other. It is estimated that the concentration of water quality becomes higher after the spread of flushing toilet. Pathogens, such as E. coli, Norovirus and Giardia, are detected in both lagoons and treated effectively by them. Although the removal ratio is high, the value is not steady during the investigation. On the other hand, considering the effets of intensive rainfall, the water quantity and water quality are investigated in the river of urban area. The pathogen loads of water quality in both lagoons and river will be estimated after the investigation." |
