Knowledge Q&A on 'Ozone Effect'

Question: What is ozone?
Answer: Ozone is composed of three oxygen atoms and is a natural strong oxidant and fungicide. Ozone absorbs harmful ultraviolet rays from sunlight in the ozone layer, protecting surface organisms. The high-purity ozone produced by the ozone industry replaces chlorine disinfection and is widely used in tap water treatment, packaging water, pharmaceutical/food process water, surface sterilization, pipeline sterilization, swimming pools, cooling towers, aquaculture circulating water purification, and professional air purification. Or in the fields of difficult to biodegrade organic matter through oxidation, waste gas oxidation treatment, bleaching of cosmetic grade kaolin, bleaching of pulp, and cleaning of clothing.
In June 2001, the US FDA (the highest certification body for national standards) officially approved ozone as a biological inhibitor that can come into contact with food, making ozone more widely used in the food industry. Bad ozone: In urban areas, a large amount of nitrogen oxides emitted by cars, when exposed to ultraviolet radiation in sunlight, produce dirty and harmful ozone. This kind of ozone mixed in photochemical smoke is not controlled and has strong irritation to the human respiratory tract, which is completely different from the high-purity ozone used in the ozone industry.
Question: Brief history of ozone use
In 1840, ozone was discovered and named after its unique odor.
In 1906, the city of Nice in France established the world's first ozone purification plant.
In 1937, the first commercial swimming pool using ozone treatment appeared in the United States.
In 1940, the state of Indiana in the United States first used ozone water treatment.
In 1975, over 1000 ozone deodorization devices were installed in sewage treatment plants across the United States.
In 1982, bottled water began to use ozone sterilization.
In 1984, all Olympic competition swimming pools were treated with ozone.
In 1989, the US Environmental Protection Agency issued The Surface Water Treatment Rules, which included ozone sterilization CT value specifications.
In 2000, approximately 300 water plants in the United States used ozone assisted treatment for water quality.
In 2001, the US FDA officially approved ozone as a microbial inhibitor that can come into contact with food.

Q: Is ozone the culprit of urban smoke pollution?
Ozone is a purifier, not a polluter. Ozone is composed of three oxygen atoms and contains no other impurities. Humans and animals cannot survive without ozone and oxygen. The ozone layer located in the stratosphere at 15-40 kilometers above the Earth's surface absorbs harmful ultraviolet radiation from the sun and protects surface organisms. Many metropolitan areas often mistakenly report ozone concentrations as high as 3-5 ppm. Scientists have confirmed that the highest concentration of ozone in polluted air is only 1.0 ppm, usually not exceeding 0.3 ppm. So reporting ozone concentration as having the same concentration as nitrogen oxides (photochemical smog) produced from car exhaust is incorrect.
Question: How to produce ozone?
Exposure of air or other gases containing oxygen to high-energy environments, such as high-voltage electric fields or UV radiation, causes oxygen molecules to split into two high-energy oxygen atoms, which then collide with oxygen molecules, resulting in the production of ozone. A typical high-voltage discharge, also known as corona discharge, produces ozone concentrations several times higher than UV radiation. Because ozone is highly reactive and decays into oxygen, it must be manufactured and used on-site, and ozone gas cylinders are not available on the market.
Q: Is it safe to use ozone?
In 1997, the Water Quality Association (WQA) published a book titled "Ozone for Point of Use, Point of Entry, and Small Water System Water Treatment Applications: A Reference Manual", which recorded that there have been no reports of permanent harm or death caused by ozone in the 100 years of human use. However, the use of ozone as an air purifier still requires careful handling. The Occupational Safety and Health Administration (OSHA), the Food and Drug Administration (FDA), and the Environmental Protection Agency (EPA) have established safety standards for ozone exposure doses, which should be monitored at all times. The use of ozone as a deodorizer in hotel rooms is a big market, but the product manual should state that no one or animals must be present when using the ozone machine. When using ozone in water and wastewater treatment systems, there may also be issues with ozone exhaust emissions, which must be considered during design.
The safe concentration of ozone in the air is as follows:
The FDA regulations stipulate that the ozone output concentration of indoor medical equipment shall not exceed 0.05 ppm.
OSHA stipulates that the average ozone concentration exposed to workers in the workplace for 8 hours must not exceed 0.10 ppm.
NIOSH recommends that the concentration of ozone should not exceed 0.10 ppm at any time.
The national standard for perimeter air quality set by the Environmental Protection Agency (EPA) stipulates that the maximum average concentration of outdoor ozone for 8 hours is 0.08 ppm

Q: What are the advantages of ozone over chlorine and other chemical agents?
Answer: It depends on where you are using ozone. The general advantages are as follows:
Ozone can kill more microorganisms than simulated chlorine. (Strong bactericidal power) (Especially pear shaped insect cysts with strong chlorine resistance, which can only be killed by using ozone)
2. The sterilization rate is faster than chlorine, which can reduce contact time, decrease reaction tank volume, and increase processing capacity.
After completing oxidation and disinfection, ozone will naturally reduce to oxygen. Chlorine will still remain in the water and requires further treatment to eliminate it.
Ozone does not produce disinfection by-products that pose a risk of cancer. Chlorine disinfection produces disinfection by-products such as chloramines and trihalomethanes. The regulation on disinfection by-products of tap water and wastewater will become increasingly strict, and ozone will replace most of the chlorine.
Ozone cannot be stored and must be manufactured on-site for immediate use. Therefore, unlike chlorine gas, there is no risk of transportation leakage and no storage issues.
6. With just one purchase, an ozone generator can continuously produce ozone. The chlorination system requires continuous purchase of chlorine.

Q: Can ozone water be used to clean food and flow tables?
Answer: In June 2001, the US Food and Drug Administration (FDA) approved the use of ozone in direct contact with food and as a biological inhibitor in the food industry. Ozone water has also been proven to control the microbial density on food and surfaces in contact with food.
The benefits of using ozone water to clean flow tables, cutting boards, knives, and dishes include reducing the number of bacteria (including pathogenic Salmonella, Listeria Listeria, E. coli, Shigella), which can reduce food contamination and make food safer.
Another benefit of reducing bacteria is to lower the bacteria that cause food spoilage. In other words, cleaning perishable foods (fresh fruits and vegetables) with ozone water can reduce the number of microorganisms that cause spoilage, allowing the food to be stored longer.
Q: What are the benefits of using ozone at home?
Answer: It depends on where you use ozone. Ozone has a significant effect on purifying indoor air.
Ozone has been proven to oxidize mold, yeast, and fungi.
Ozone can effectively eliminate the smoke odor of cigars and cigarettes.
Ozone can even oxidize pollutants released from carpets, paint, and furniture.
4. Ozone is also used to eliminate pet odors, as well as the smoke odor attached to carpets and furniture.




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