As one of the most powerful oxidants. Ozone Is a colourless gas with little offensive smell of grass, and is
generally -admitted environmentally friendly disinfectant.Ozone is the Allotropes of oxygen, with the same
element composition but different structural appearance. Their performances are quite different. Ozone
shows very powerful oxidation capacity. Oxidation reduction potentials of different materials are shown in
Table 1
NAME AND
MOLECULAR FORMULA
STANDARD
ELECTRODE
POTENTIAL (VOLTAGE)
NAME AND
MOLECULAR
FORMULA
STANDARD
ELECTRODE
POTENTIAL (VOLTAGE)
Fluorine F2
2.87
Permanganic acid ion
MnO4
1.67
Ozone O3
2.07
Chlorine Dioxide
CLO2
1.50
Hydrogen Dioxide
H2O2
1.78
Chlorine CL2
1.36
Ozone is used in four fields
●
Water treatment
●
Chemical oxidation
●
Food processing
●
Medical treatment
Water Treatment
Ozone can effectively and rapidly kill bacteria, viruses and other microbes in water, completely remove
organic compounds and other pollutants, but not bring about secondary pollution. There will be chloroform,
bromine dichloromethane, carbon tetrachloride and other chloridized organics (THM) with carcinogenicity, if a
polluted water source is treated by chlorinating. Using ozone in treatment, there will be no secondary
pollutant. Sewage treatment includes civil sewage, industrial sewage and medical sewage, with the main
purse of sterilizing, removing pollutants, decolorizing and eliminating stin to meet discharge standard.
Treating swimming pool water with ozone, the water will be limpid and transparent, and some problems
caused by using chlorine, such as yellow hair and stimulation on eyes, skin and respiratory tract will be
thoroughly settled. Its effectiveness and advantage have been generally accepted.
The Cooling Tower Association of USA has recommended using ozone to treat cooling recycled water to
reduce and remove incrustations, disinfect and eliminate algae, prevent corrosion and stabilize water quality.
Chemical oxidation
Ozone has been used in chemical engineering, petroleum, paper making, textile, pharmaceutical, spice and
other industries, as an oxidant catalyst and refining agent. The powerful oxidation capacity of ozone can
easily break carbon chains in alkenes, alkyne organics and partially oxidize them to form new chemical
compounds. In purifying biological and chemical air pollutants, stink in factories processing furs, coating
5
