In the water treatment process, ozone is used effectively for removing pollutants, but air ozone has to reach high concentrations before it can remove air pollution. This article covers specific concentrations of ozone required for various applications of ozone.

ozone concentration

Water Treatment

The use of ozone in water treatment has been around for more than hundred years. Because of its distinctive and unique properties that permit disinfection of heavily contaminated water streams, it is one of the most powerful water treatment compounds available today. It is the most widely used purification method for water in the world today.

ozone concentration in water

Moreover, ozone is both a powerful oxidant and a disinfectant that can oxidize the metals in water, such as iron, manganese, and sulfur, and convert them into insoluble particles. No chemicals are used in ozone water treatment.

Aside from the fact that ozone eliminates microorganisms from the water, it also helps clean water filtration systems and eliminates odors. There is no need to add chemicals to the water as ozone is so effective at disinfecting and oxidizing, leaving no residue behind.

Its oxidizer power is over 3,000 times greater than chlorine, the most common chemical used in water disinfection. In addition to being highly toxic, chlorine and fluorine are also harmful to health. The following table illustrates different ozone concentrations required for specific water treatments.

Ozone Concentrations For Water Treatment

Treated WaterConcentration of ozone (mg/L)Infusing time (min)Effectiveness (%)
Aquarium, ponds0.10~0.05Constant>90
Bath water0.1~0.5Constant>90
Pool water0.5~1.05>90
Removing odors0.5~1.01>80
Sterilizing clean water0.5~1.05>99.9
Sterilizing goods in clean water1.0~2.05>90
Sterilizing dirty water2.0~3.05>90
Removing organics1.0~3.05>30

Air Treatment

Health risks associated with internal air are complicated by the presence of a mixture of pollutants. The quality of the air in your house will be improved by using an ozone generator.           

ozone concentration

It is a highly reactive oxidant and it is produced naturally by corona discharge; it is effective against chemical sources, bacteria, mold, odors, etc. Ozone is a highly reactive oxidant that interacts with most contaminants and allergens it encounters to render them harmless.

Ozone has an extremely high power, and with the oxidation process, the pollutant loses its odor-causing, toxic, or allergenic properties, thus, even if an airborne oxidized contaminant is inhaled, there will be no harm done. Bacteria, microorganisms, fungi, and some insect larvae are susceptible to the sterilization power of ozone. Following exposure to ozone, microorganisms like fungal spores and bacteria become incapable of reproducing, causing their numbers to decrease rapidly.

The following table illustrates different ozone concentrations required for specific air treatments in indoor environment.

Ozone Concentrations For Air Treatment

FieldObjectPurposeConcentration of ozone( PPM )
HouseBasement, Living room, Kitchen, Locker, Pet, Toiletkill bacteria, Prevent insects (cockroach, tick, housefly, mosquito), prevent infectious diseases of pets; Remove odors 0.01 - 0.03
BuildingToilet, Garbage room Remove odors0.02 - 0.5
HospitalOperation room, Consulting room, Waiting room, PassagewayPrevent secondary infections; remove odors0.01 - 1.0
Livestock industrychicken raising yards, Pig raising Prevent infectious diseases; remove odors0.01 - 0.03
Food industryCooking area, Toilet, packaging area, dressing room, vegetable cleaning, raw garbage warehouse Cleaning of (kill bacteria; remove odors) work area, cooking machines and operators0.01 - 1.0
Logistics industryCargo ship, Commercial freezing, cooling warehouse, storehouse, truck Prolong the freshness of fruits, vegetables, meats; Remove odors0.01 - 0.5