| abstract |
According to the present invention there is provided a purifying method wherein very fine organisms such as protozoa and plankton, or bacteria or virus, or those with which or on which they are symbiotic or parasitic, are subjected to the action of ozonized water for killing, or oils, fats, resins, or other contaminants, adhered to objects are subjected to the action of ozonized water for exfoliation from the objects. |