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Proper use of environmentally safe and harmless
product
ozone equipment
Ozone applications in
many industries in our country has achieved good results, and
gradually for people to understand and accept. However, the use of
safe sex and physical damage there is still doubts about who should
be the attitude of science to answer these questions.
"Ozone" is due to "protection of the atmosphere" propaganda and well
known. Because ozone refrigerator deodorizer, ozone Xiaoduwangui
other home appliances market, people have become familiar with the
application of ozone.
Ozone has a distinctive smell. Initially it was found that according
to the smell of new substances. In 1840, German scientist Shu Bei
because (Schonbein) reports submitted to the Academy in Munich
announced the discovery of ozone. Spark discharge him under
electrolysis experiments with the odor and stench in the air after
lightning smell the same, determine the odor is caused by a new
substance produced, and this new material named "OZONE" --- ozone,
the term according to Greek Ozein (odor) transliteration of the word
Ozone was officially discovered after six decades, scientists from
various countries study identified three oxygen atoms of ozone as
the structure and physical and chemical parameters, and carried out
artificial ozone-generating equipment ----- ozone generator
developed ozone application experiments. In 1904, Germany. Pull.
Kukes (de la coux) published up to 557 ozone technology and
application reference.
Ozone in nature:
Ozone O3 is the oxygen allotrope of O2, the same constituent
elements constitute morphological differences, very different
nature.
Ozone applications:
1, water treatment
Ozone in the water of bacteria, viruses and other microorganisms
kill rate of speed on the complete removal of organic compounds and
other pollutants without secondary pollution, so the application of
ozone water disinfection is the most important sector, ozone water
industry the largest market.
Chlorine disinfection in water plant applications is very common.
But ozone on bacteria kill rate is higher, kill faster. Chlorine
disinfection of water quality are particularly sensitive to changes
in pH, pH value changed from 7.5 to 8.0 chlorine dosage should
increase 2.5 times, while the ozone dosage changed little. Currently
using ozone instead of chlorine disinfection most important factor,
but also the traditional use of chlorine disinfection of the United
States, Japan and other countries are in the rapid development of
the use of ozone-treated water main reason is that as water
pollution by organic chemical industrial products, will produce
chlorine disinfection chloroform, methylene bromide, carbon
tetrachloride, chlorinated organics (THM), these substances have
carcinogenic, and ozone oxidation treatment does not produce
secondary pollution compounds.
Sterilization of bottled water purification process using ozone is
most common, positive, a rough estimate, mineral water, pure water,
clean water more than ten thousand, about 80% of the sterilization
process using ozone. Due to technical supervision, and epidemic
prevention departments have formed a consensus, there is no ozone
equipment for bottled water is difficult to compete in the market.
With the bottled water market, and domestic development of a large
number of ozone equipment manufacturers. Ozone generator, dosing
mixing equipment variety, quality is uneven, and even false fake, so
bottled water quality can not be guaranteed. The key lies in the
treated water should reach 0.3 ~ 0.5mg / L ozone solubility values,
which first requires the amount of ozone dosage should satisfy the
conditions of 1m3 of water 2g ozone, and must ensure full contact
with water ---- gas and maintain a certain period of time .
According to practical experience, ozone concentrations higher than
8mg / L is easy to achieve solubility requirements.
Sewage treatment including urban sewage, industrial effluent and
sewage medical treatment, mainly for the purpose of disinfection,
removal of pollutants and odor bleaching to meet emission standards.
In recent years due to lack of water resources plaque, industry
department has developed industrial and domestic wastewater reuse
regulations, improve the processing standards.
United States in the early seventies of this century began using
ozone treatment of sewage, the main purpose of disinfection and
reduce biological oxygen demand (BOD) and chemical oxygen demand
(COD), remove nitrite, suspended solids and bleaching, has reach
full production application level. Japan in the areas of sewage
water after ozone treatment as a non-potable water (ie water)
recycling.
Ozone is used for electroplating industrial wastewater effluent
containing cyanide oxidation, textile printing and dyeing wastewater
decolorization, refining sewage to phenol, alkanes substances.
United States, Japan, Germany, France and other countries in recent
years have established a large-scale sewage treatment plant, China's
oil refining, printing and dyeing industry also has pilot
applications.
Ozone disinfection of swimming pool water is widely used, its
processing effects and advantages has been recognized, the foreign
application is extremely common. Of Guangzhou Tianhe Natatorium,
Beijing Asian Games Village Ying Tung Natatorium, adopted ozone
disinfection, the water is clear and transparent, completely solve
the chlorine disinfection irritate the eyes, skin, and the hair
yellow issue.
The U.S. Association recommends ozone treatment cooling tower
circulating water cooling technology that can achieve scale,
cleaning, sterilization algaecide, corrosion and stability of water
quality objectives, the U.S. company has computer-controlled testing
ozone ozone cooling water circulation system in operation, many
units of conducting experimental studies, lessons learned.
Two chemical oxidation
Ozone as an oxidant and catalyst and refining agent used in
chemical, petroleum, paper, textiles and pharmaceuticals, fragrances
industry. Strong oxidizing power of ozone is easy to interrupt
alkenes, alkynes organic compounds with carbon chain bond, after the
partial oxidation to form new compounds.
Carbon fiber new material by ozone surface treatment to improve the
quality; plastic film ozone treatment to improve the surface color
printing capability; pulp bleaching in Norway has been developed to
produce experimental stage.
In the biological, chemical contamination gas purification, ozone
plays an important role. Fur, casings and the stench of fish
processing plants, rubber, chemical plants polluting gases can be
released through the smell of ozone.
Ozone can resolve the mustard gas, sarin and other chemical agents.
Ozone on synthetic pesticides act as a catalyst for certain
pesticide residues in and can be oxidized and decomposed.
Three food industry applications
Strong bactericidal ability of ozone pollution and the benefits of
it without residual disinfection in the food industry, odor, mildew
preservation aspects widely used.
1904 had the use of ozone preservation of milk, meat, cheese and
other food proteins reported in 1909 French De Bonie refrigeration
plant official use chilled meat surface ozone sterilization, and
achieved a significant reduction in the number of microbial effects.
In 1928 the British established in Tianjin, "Hop Kee egg plant",
which beat egg workshop on the use of ozone disinfection. The late
thirties, the United States 80% of the frozen egg libraries are
equipped with ozone generators, improve egg storage period. It is
particularly worth noting that the U.S. Food and Drug Administration
(FDA) in April 1997, has been modified to ozone as "food additive"
restrict the use of the provisions do not apply to allow in food
processing, storage, use ozone. This is a milestone in the
development of ozone technology. The U.S. and many countries food
processing technology advances, improve food quality, has a major
role.
4 Medical Applications
On the ward, operating room air disinfection ozone in our country is
to promote the main direction, and carried out a lot of treatment
abroad is the application of research experiments. Germany,
Switzerland, Russia, France and Italy, the medical and dental
doctors, many years in the use of ozone for treatment, such as oral
surgery and dental ornament maintain oral sterile water with ozone,
ozone in combination with radiation therapy to treat cancer,
drinking ozonated water treatment of women's diseases, injecting
ozone gas treatment fistula hemorrhoids, varicose veins.
Ozone is a gas safety
Information on the nature of ozone in the introduction cryogenic
condensation often referred to ozone and 20% concentrations of ozone
and oxygen gas mixture exists the possibility of explosion. In
practice, low concentration ozone, such as the application of
high-concentration ozone water generator of the highest
concentration of 70mg / L (source of oxygen concentration of 5%), as
an air processing applications generator at concentrations of
200mg/m3, than explosive concentrations much lower, and hence the
security of our application of ozone gas.
It is noteworthy that using oxygen source is indeed large ozone
system should be strictly in accordance with safety standards for
the design and operation of oxygen. Currently installed in the
supply line as the detection of hydrocarbon detector alarm equipment
to prevent oxygen explosion accidents.
The application of ozone in a hundred years history, has not been
reported instances of ozone explosion.
2 health standards and health protection
Ozone as a gas fungicide, relying on its oxidation generated against
viruses, bacteria and fungi and other microorganisms strong role in
the killing. Like with any disinfectant for animals and humans
caused by certain physiological responses even damage, but the ozone
than the commonly used disinfectants to be much smaller,
anti-insurance is also much easier.
National scientific community on the physiological damaging effects
of ozone had a long in-depth research, and develop the appropriate
health standards in order to ensure the health applications.
Ozone industrial hygiene standards:
International Ozone Association: 0.1, the contact 10 hours
United States: 0.1 exposure 8 hours
Germany, France, Japan: 0.1
China: 0.15
Research experiment is multifaceted, beginning from 1950, including
by age groups for ozone exposure in order to determine the
physiological responses of. In a large number of experimental data
on the basis of many researchers in accordance with K = c
(concentration) * t (time) Equation established physiological
response of human health protection and the relationship between the
ozone concentration graph. This figure clearly shows that people in
the physiological response of ozone environment and the extent of
damage to the product concentration with time, indicating that
higher concentrations do not produce significant short contact time
of impact, and with the low concentration but a long time may be
affected significantly.
The following diagram stimulation zone range without
damage zone, ie leave the ozone environment quickly recovered in the
affected zone. Figure Pinching means "feel" for the smell of
ozone-specific odor; "stimulus" is a respiratory mucosa reaction was
dry mouth, cough, sore throat strong stimuli, such as feeling tired,
take a few hours to recover. Literature clearly pointed out that the
section above stimulation area (poisoning District) is the estimated
value. So far in the world without a case of ozone poisoning
incidents.
Because people can feel the sense of smell ozone concentrations
below health and safety standards, so that any person working area
of ozone in the ozone stimulation obviously feel it will
automatically take technical measures to avoid or eliminate leakage
fault, and not a "product" accumulation damage.
Ozone as a disinfectant, bactericidal ability, use of low
concentration, self-decomposition of oxygen can no residual
contamination after contact discomfort disappeared immediately left
the scene, etc., is formaldehyde (formalin), peracetic acid,
potassium permanganate other common disinfectants can not match.
Requires the presence of staff directly disinfection is
unreasonable. To ensure the correct application of health from ozone
damage.
Ozone is not a panacea, nor is it perfect. Should be based on a
scientific attitude and approach to publicity, promotion and
application of ozone, ozone increased with the development of
China's technological level.
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