Major species of Lake Deganuma has varied depending on the season. Namely, there are Micractnium pusillum, chlorella., Scenedesmus sp. shown up in spring season, Microcystis aentginosa, Microcystis wesenbergii, Anabena spiroides in summer and autumn s...
Major species of Lake Deganuma has varied depending on the season. Namely, there are Micractnium pusillum, chlorella., Scenedesmus sp. shown up in spring season, Microcystis aentginosa, Microcystis wesenbergii, Anabena spiroides in summer and autumn season and Cyclostephanos invisitatus, Diatoma in winter season in the Lake. As the number of plankton increased, the zeta potential on their surface of them decreased. For this reason, they were dispersed in the lake though the population increased. Zeta potential of M. aeruginosa showed -20mV when their outer size got smaller. As for coagulant dosing in DAF, large amount of coagulant was effective to get lots of sludge during water treatment.