Home> Technical> Technical info> Ozone
  What is PEC-ion System?
  What is Anion Air purifier?
  How to use Filter
  Test Report in English
  Test report in Korean
  Product Profile in English
  Product Profile in Korean
  Product Image
  Places where "mugu"is being used

What is OZONE?

A study on the generation of anion and ozone by air cleanerWritten by Jang Soon Lim, professor at the Dept. of Mechanical Engineering, Inha University The word "Ozone" was originated from a Greek "Ozein"("Smell"). Ozone was discovered by a German "Van Marum" in 1785 about 200 years ago. Its sterilizing effect was discovered by a French "De Meritenus" in 1886.

Ozone always exists in the air in a small quantity (0.01 to 0.03ppm), and is not any particular matter.Ozone is readily generated by electric discharge (lightening) in the air as well as by the photochemical reaction of ultraviolet with nitrous oxide, methane and hydrocarbon. Most of ozone naturally generated exists in the atmosphere 20 to 50km above sea level.

The existence of ozone layer has been well known to us. The recent destruction of this ozone layer has hung over men as a serious issue. Ozone absorbs ultraviolet from sun's ray in the stratosphere. So only the visible ray reaches the ground. However, abusing of Freon gas and automobile exhaust gas has destructed the ozone layer to create ozone hole. Ultraviolet reaches the ground through this ozone hole to cause serious damage. Ozone is also generated by dry oxygen or radio discharge in the air. In addition to this, ozone is generated as accompanied with oxygen when yellow phosphor is slowly oxidized in the air or when oxygen compounds such as permanganic acid potassium and dichromic acid potassium are discomposed to thick sulfuric acid, when water is discomposed to fluorine and when water is decomposed in a high current density. Ozone is also generated when oxygen is heated, when sulfuric acid is decomposed by electrolysis, or when ultraviolet, X-ray or cathode ray passes the air.

So high mountain, seashore and forest are abundant in ozone in the air, So we feel fresh on high mountain, seashore and forest. However, large quantity of ozone may offer unpleasant feeling due to its unique smell. Ozone is considered to be contained in the high atmospheric layer called "Ozone layer".

Ozone reduces to oxygen. Therefore, it is used in theater, school and hospital to purify air. Since ozone has a sterilizing effect, it is used for sterilization of drinking water, bleaching and restructuring of organic compound. However, inhalation of thick ozone for an extended period of time may inflict damage to respiratory organ. Since ozone dissolves 9 times more than oxygen does, 45 volume of ozone is dissolved in 100 of water. Therefore, it is possible to get dissolved oxygen in a large quantity.

The density of ozone is 0.05ppm in nature, and seasonally varies.
It is 0.02ppm and 0.07ppm in winter and summer, respectively. Ozone is naturally generated by electric discharge for oxygen in the air. Atomic oxygen combines with oxygen molecule in this reaction.
Since the density of ozone increases by radiant solar energy, ozone layer exists outside the earth atmosphere.

Ozone has the highest reactivity among molecular oxygen, and is a powerful oxidizer next to fluorine,
fluoric oxygen and atomic oxygen. Ozone generates pleasant smell when its density is 2ppm or slightly less. If the density exceeds this level, it generates stimulative smell.

Ozone is used to sterilize water and air. It is also used industrially to remove wax and oil stain and to compose organic substance. Ozone is generated by discharge of oxygen.
When ozone is blown into flame and used in the air, it decompose heavy metals with strong sterilizing and oxidizing power, kills infectious bacteria in several minutes then reduces to dissolved oxygen in water.

Effect OZONE on human body?

Ozone promptly gives off one of three oxygen atoms to other matters. Ozone blocks and absorbs ultraviolet in the stratosphere due to this property. This absorption ratio is approximately 99%. The harmful effect that ozone have against human body in the atmosphere is attributable to this high reactivity. It unconditionally combines any organic substance on skin to create material that is harmful or even fatal to human body.

This reactivity has not been understood fully. For example, it attacks cells of lung to deteriorate function of respiratory organ. What is more dangerous, it may hurt gene in the cellular nucleus to cause DNA mutation and to develop cancer.
Soft tissue such as cornea of the eye is prone to the attack of ozone.

Ozone is highly toxic. If one is exposed to ozone at 1ppm 8 hours a day, it causes bronchitis, fibrosis in the tissue of lung and bronchiolitis. If one is exposed to ozone at 1.25ppm an hour, his/her breathing function deteriorates. If the concentration of ozone rises, it develops pulmonaryedema and bleeding and causes trouble in the gas exchange via the alveolar membrane. The allowed maximum ozone concentration is 0.1ppm for workers who work 8 hours a day.
Toxicity of ozone
Ozone(ppm) Effect on human body
0.01-0.03 Smells only
0.1 Generates odor stimulative to nose or throat
0.2 ~ 0.5 Eye sight deteriorates after 3 to 6 hour exposure
0.5 Evidently stimulates airway and respiratory organ
1~2 Causes headache and phlegm. This symptom becomes chronic
if exposed repeatedly
5~10 Causes rapid pulse and pulmonaryedema
15~20 Small animal may die within 2 hours
Environmental safety level of ozone(atmosphere)
Ministry of
Ministry of Japan Industrial
Environment Korea
OSHA(Occupational Safety
(Occupational Safety
Environment Sanitary Academy
Health Association)
Health Association)
0.06(8hour average)
0.06(8hour average)
0.1(8hour average)
0.1(1hour average)
0.12(1hour average)
Environmental safety level of ozone(atmosphere)
Effect OZONE on human body?
Ozone has strong oxidizing power to oxidize lots of organic and inorganic compounds. In particular,
it rapidly decomposes nuclei of aromatic compound at ambient temperature as well as organic olefin.
Ozone is used for bleaching, deodorization, decolorization,
restructuring of organic compound and synthesis of chemicals.
Ozone is an excellent sterilizer and deodorizer of potable water and air, and largely used in water
purification plants in Korea. If chlorine is added excessively, a byproduct that is called chloroform (one of trihalomethane) and known as cancerogenic material generates. However, ozone does not produce such a harmful byproduct. And ozone is known to be a powerful oxidizer next to fluorine.

Industrial use of ozone
Potable water treatment Wastewater treatment
Cooling tower Aquarium, fish farm
Swimming pool and pleasure park Natural water dispenser
Drinking beverage factory Material test(Aging of rubber, color test)
(Bear and juice) Deodorization and odor control
Fresh food storage Health care
Semiconductor production
(CVD, wet processing)

Source of ozone
Electron beam welding Plastic film surface treatment
Duplicator, laser printer Automobile exhaust gas combined with sun's ray
TEL: 82-1688-5648 FAX: 82-0504-134-7967 E-mai: chungpung-mugu@daum.net  All contents copyright(c) 2009 Chungpung Co. Ltd. All rights reserved