Ozone Water Treatment Plant Capacity 50m3/day, Ozone water treatment is a water treatment method that reduces contaminants through ozones oxidative strength. Ozone is an oxidant, which means it reacts with other substances and accepts their electrons. For example, when the iron is oxidized, it becomes rust. Ozone water treatment begins with the creation of ozone in an ozone generator. Then, ozone is injected into water, and immediately starts oxidizing and eliminating contaminants, such as bacteria, viruses, and metals.