Process and apparatus for removing impurities from water used in food processing utilizing a mixture of ozone and air

Abstract From the Canadian patent

An apparatus and a process for using the apparatus for removing fat, bacteria, solids and other impurities from water used in food processing so that substantially all the water may be reused includes a tower. The water is passed through a coarse filter to remove large pieces and is then introduced into the tower near the top thereof and flows out the tower near the bottom thereof. A mixture of ozone and air is introduced at the bottom of the tower and bubbled up through the tower, counter to the flow of the water. The ozone and water mixture carries impurities especially the, fat, over the top of the tower as a foam. The foam then flows over the tower into a waste drain. The process and …