Ozone generator system using discharge coronas was fabricated to produce ozone gas and
ozonated water of varying concentration. The generated ozone air emitted to the water
through bubble diffuser or venturi injection depending on the input air mass transfer rate.
The concentration of ozonated water was examined using both ozone test strip and Schoenbein
paper. It is found that the production of ozone water by using bubble diffuser technique
facilitates the production of higher concentration of ozonated water with higher ozone transfer
efficiency. The efficiency of ozone gas in microorganism treatment is verified through the
lowest number of microorganism’s colony available compared with other treatment methods.
The half-life of ozonated water in this study was improved by increasing the transfer rate
of water and solubility of ozone in water. The concentration of ozonated water was found
increased through the application of pressurised oxygen input gas.