ABSTRACT
The efficiency of ozone and ultraviolet irradiation (UV-C) to inactivate the bloom particles in liquid phases sampled from culture medium and natural water body was tested. Only UV-C performed the higher inactivation efficiency for both water culture and natural water samples. Using culture water samples, UV-C could eliminate completely algal activity with chlorophyll a (chl.a) content up to 327 micro-g/L. Even a complete elimination was observed for a sample with chl.a content of 74.7 micro-g/L, the UV-C efficiency on natural water samples was uncertain. This uncertainty was seemed to be derived from both natures of SS particles and ecological structure of the algal bloom in the natural samples. Using natural water samples, it is simulated that mechanical destruction of SS clusters and algal flock should be needed in order to increase UV-C efficiency.HomePageKeywords: inactivation, ozone, UV-C, water bloom particles