Ozone Library

Home » Ozone Library » Treatment Levels of Ozone For Microbial Species

Recommended Treatment Levels of Ozone For Particular Microbial Species

There is a two-step procedure for determining the recommended treatment levels of ozone. First, the grams of ozone that you need to produce to oxidize the grams of contaminants. The second is the disinfection calculation, measured in mg/l of ozone over a specific period. Inactivating a living organism requires concentration and time (Ct).

Organism

Concentration (ppm)

Minutes

CT

Algae (blue-green)0.35.01.5
Bacteria (all species), recommended0.11.00.1
Escherichia coli (E. coli)0.041.00.04
coliphage MS20.20.50.1
Heterotrophic Bacteria HPC0.20.50.1
Mycobacterium tuberculosis, leprae0.016.00.06
Pseudomonas aeruginosa, fluorescens0.010.10.01
Salmonella, all0.010.10.01
Staphylococcus, sp, albus, aureus0.010.10.01
Streptococcus, all0.012.00.02
Fungus, Mold, Yeasts0.35.01.5
Nematodes, all, recommended1.05.05.0
Protozoa, all, recommended1.55.07.5
Acanthamoeba & Naegleria0.20.50.1
Amoeboe Trophozoites cysts0.44.01.6
Cryptosporidium, recommended1.55.07.5

By Jim Eagleton

Note

  • The CT factor is the product of the ozone concentration (ppm) and the contact time (minutes). Essentially, the higher the CT factor, the more difficult the organism is to kill.
  • Amicrobial species with a CT factor of 0.01 for example will be killed by an ozone concentration of 0.01 mg/L for a contact time of 1 minute or an ozone concentration of 1.0 mg/L for 0.01 minutes, (0.6 seconds).

Contact us now if you require more information on the subject or technical assistance with sizing an Ozone system

Have Questions?

INQUIRE NOW

Click to see aspects

nano generator

NANO

Click to see aspects

Absoluteozone Atlas

ATLAS

Click to see aspects

TITAN

TITAN

Click to see aspects

magnum

MAGNUM