Studies on the inactivation of water bloom particles (Part III): - combination effects of flotation and UV-C on the inactivation of water bloom particles -

摘要

Separation of water bloom particles from liquid phases by different types of floatation with aids of co-agulants as well as their inactivation by treatments with ozone and ultraviolet light of C zone (UV-C) were studied. With the aids of poly aluminum chloride (PAC) or ferric chloride, separation rates of water bloom particles by flotation were about 99.75% and 96.70% on the basis of suspended solids (SS) and chlorophyll a (chl. a), respectively. UV-C showed higher inactivation effect over ozone, and UV-C effect was enhanced significantly by mixing and ultrasonic wave treatments on water samples before the UV C treatment. It is suggested that complete inactivation of bloom particles might be possible with UV C treatment if water phase were treated beforehand by a flotation system.