Abstract: The water after final filtering at the sewage plant of Xibaipo Power Plant in Hebei Province, China was selected as original water. The effects of different ozonation technics used to deal with organic contamination were investigated. The results of captive testing and dynamic testing showed that, when UV and active carbon were used as synergetic catalyzer in ozonation process (in an OUC reactor), the effects of organic contaminations oxidation degradation were improved markedly, the same as the availability of ozone.