Ozone technology is both old and new technology, 1840 German chemist invented this technology, 1856 was used in the water treatment and disinfection industry. At present, ozone has been widely used in water treatment, air purification, food processing, medical, pharmaceutical, aquaculture and other fields, the development of these industries has played a great role in promoting. Ozone can be produced using an ozone generator, the principle of its generation ozone can be obtained through high-voltage discharge, corona discharge, electrochemical, photochemical, atomic radiation and other methods, the principle is the use of high-voltage electricity or chemical reaction, so that part of the oxygen in the air decomposition polymerization of ozone is a process of isotopic transformation of oxygen, ozone is a process of molecular formula for the O3.
Principle of sterilization
Ozone is Ozone is a strong oxidant, the sterilization process is a biochemical oxidation reaction. o3 sterilization has the following three forms:
1, ozone can oxidize and decompose the bacteria inside the glucose enzyme needed to inactivate the bacteria to death.
2, directly with bacteria, viruses, destroy their organelles and DNA, RNA, so that the metabolism of bacteria is damaged, resulting in bacterial death.
3, through the cell membrane organization, invasion of the cell, the role of the outer membrane of the lipoprotein and the internal lipopolysaccharide, so that the bacteria undergo permeability aberration and dissolution of death.
What is the role of ozone sterilizer
1, in the role of public **** place of business
The use of ozone strong oxidizing properties can be removed from the decoration, synthetic panels, paints released by the toxic substances, can kill airborne bacteria, viruses, kill microorganisms breeding in the carpet, eliminate cold germs, prevention of influenza, and increase the occurrence of indoor oxygenation.
Ozone odor removal performance is excellent. Strong oxidation performance can quickly decompose odor and other organic or inorganic substances. The main components of odor are amine R3N, hydrogen sulfide H2S, methyl mercaptan CH2SH and so on.
2, in the hotel and restaurant integrated role
As our country is in a period of development, serious environmental pollution, industrial sewage discharge, resulting in the quality of drinking water is difficult to meet the World Health Organization (WHO) direct drinking water standards. Foreign guests, foreign businessmen, overseas Chinese and sightseeing tourists coming to our country, they are both the spreader of modern civilization, while certain people are also carriers of regional disease viruses.
3, fruit and vegetable cold storage applications
Ozone in the application of vegetable and fruit storage, in addition to killing or inhibiting the growth of mold, to prevent decay, but also to prevent aging and other preservation effects. The mechanism is that ozone can oxidize and decompose fruits and vegetables respiration out of the ripening agent a ethylene gas C2H4. ethylene intermediates also have the inhibition of mold and other microorganisms. Ozone can play a role in sterilization and mold and rapid decomposition of ethylene to slow down the metabolism of two aspects, to delay maturation, aging and decay, with packaging, refrigeration, air-conditioning and other means of improving the preservation effect together.
4, the application of air purification in the car
Borrowing the sterilization method of ozone, the biggest advantage is that there will be no residual harmful substances, will not cause a second pollution of the car. Ozone sterilization method is simpler to operate, will be connected to a car special disinfectant hose into the compartment, open the car special disinfectant and car air conditioning, the use of air conditioning air circulation, the special disinfectant produced by the high concentration of ozone sent to every corner of the car, only a few minutes. Eliminate germs more thoroughly. The shortcoming is that the disinfection of the car will remain a little ozone smell, but as long as the windows will be opened for a while, the ozone will automatically decompose into a colorless and tasteless gas evaporated. Using this method of disinfection once a month, many car beauty service stores provide ozone disinfection services.
5, green food disease prevention technology
Ozone, also known as oxygen-rich, super-oxygen, three-atom oxygen, is an allotropic isomer of oxygen (O2), the molecular formula for the O3, because of the similarity to the stink after lightning and named. Ozone is commonly used oxidants in the oxidizing capacity of the strongest one, its disinfection and sterilization capacity is more than 2 times that of chlorine, sterilization speed is 300-600 times that of chlorine, is 3000 times that of ultraviolet light, and there is no dead zone, the reaction is reduced to oxygen, is identified as a highly efficient, clean oxidant without secondary pollution.
The principle of ozone sterilizer is to use the high penetration of ozone to quickly enter the bacteria inside and kill the bacteria. Ozone is not harmful to health, so you do not need to worry about the occurrence of secondary pollution or harm.
Ozone disinfection sterilization method has the following characteristics compared with conventional sterilization methods
1, high efficiency. Ozone disinfection sterilization is to air as coal, without any other auxiliary materials and additives. The body is inclusive of good, thorough sterilization, with the same into there is a strong mold, fishy, smelly and other odors in addition to the function.
2, high cleanliness. The rapid decomposition of ozone into oxygen is characterized by the unique advantages of ozone as a disinfection and sterilization. Ozone is generated using the oxygen in the air, disinfection process, excess oxygen in 30 minutes and then combined into oxygen molecules, there is no residue, solving the problem of secondary pollution generated by the disinfectant disinfection method, while eliminating the need to clean again after the end of disinfection.
3, convenience. Ozone sterilizer is generally installed in the clean room or air purification system or sterilization room (such as ozone sterilization cabinet, transfer window, etc.). According to the debugging verification of the sterilization concentration and time, set the sterilizer according to the time to open and run time, easy to operate and use.
4, economy. Through the use of ozone sterilization in many pharmaceutical industries and health care units and the operation of the comparison, ozone sterilization method compared with other methods have great economic and social benefits. In today's rapid industrial development, environmental issues are particularly important, and ozone sterilization to avoid secondary pollution generated by other disinfection methods.
Advantages of ozone sterilizer
Ozone sterilization is a lysis level method, sterilization is thorough, no residue, sterilization broad-spectrum, can kill bacterial propagules and spores, viruses, fungi, etc., and can destroy botulinum toxin. In addition, O3 also has a strong killing effect on mold.O3 due to poor stability, will soon decompose itself into oxygen or individual oxygen atoms, and individual oxygen atoms can be combined into oxygen molecules on their own, there is no toxic residue, so O3 is a non-polluting disinfectant.O3 is a gas, it can quickly diffuse to the entire sterilization space, sterilization without dead ends. The traditional sterilization methods, whether it is ultraviolet light, or chemical fumigation, are not thorough, dead ends, workload, residual pollution or odor and other shortcomings, and may damage human health. Such as the use of ultraviolet disinfection, no effect in places where the light can not be irradiated, there is a recession, weak penetration, the service life is not long and other shortcomings. Chemical fumigation method also has shortcomings, such as very strong resistance to bacteria and viruses, the sterilization effect is not obvious.
Active oxygen (ozone) sterilization effect is reflected in its strong oxidation, is recognized worldwide green broad-spectrum efficient disinfection and sterilization agent. Widely used in drinking water disinfection, medical and health institutions, air disinfection, ozone will be automatically reduced to oxygen after 30-40 minutes, no chemical residues of secondary pollution. The applied fields are disinfection cabinet, fruit and vegetable detoxification machine, gynecological therapeutic instrument, food processing, drinking water filling and disinfection equipment. For details, you can check the information of science books or online query to verify.
Problems with ozone sterilizers
Ozone disinfection, as an alternative to chlorine disinfection, is increasingly used in drinking water treatment. Tests have shown that ozone has a significant inactivation effect on almost all bacteria, viruses, fungi and protozoa, oocysts. Disadvantages are: large investment, the cost is higher than chlorination disinfection; O3 in the water is not stable, control and detection of O3 requires certain technology; disinfection of the pipeline has a corrosive effect, so there is no residual O3, so the need for a second disinfectant; and iron, manganese, organic matter, etc., the reaction, which can produce micro-flocculation, so that the water turbidity;
Ozone oxidation of raw water containing bromide ions will produce bromate. Bromate has been designated by the International Agency for Research on Cancer (IARC) as a class 2B potential carcinogen, WHO recommends that the maximum bromate content of drinking water is 25 μg/L, and the U.S. Environmental Protection Agency (USEPA) Drinking Water Standards stipulate that the maximum permissible concentration of bromate is 10 μg/L. Bromate generation in the process of ozone oxidation has two pathways: ozone oxidation and ozone / hydroxide radical oxidation, and the control of bromate can be achieved by controlling the formation and removal after generation of bromide. formation and removal after generation. Reducing pH, adding ammonia, chlorine-ammonia process and optimizing ozonation conditions are ways to control bromate formation, while bromate generation can be removed by physical, chemical and biological methods. Therefore, in order to achieve a balance between ozone, pathogenic bacteria and bromate, it is necessary to further explore the mechanism of ozone sterilization and bromate control methods.
Ozone air disinfection precautions
1, ozone on the human respiratory mucous membrane irritation, ozone concentration in the air up to 0.15 ppm, can be smelled; in accordance with international standards, up to 0.5-1 ppm can be caused by a dry mouth and other discomforts; up to 1-4 ppm can be caused by coughing; up to 4-10 ppm can be caused by a strong cough. Therefore, disinfection with ozone to disinfect the air, must be in the absence of human conditions, disinfection after at least 30 minutes to enter.
2, ozone is a strong oxidizing agent, a variety of items have damage, the higher the concentration of damage to the items the more serious, can make the copper appear green rust spots, rubber aging, discoloration, elasticity is reduced, so that brittle, fracture, so that the fabric bleaching and discoloration.
The speed and effect of ozone sterilization is powerful, its high redox potential determines its oxidation, decolorization, deodorization of a wide range of applications, research has pointed out that the ozone is dissolved in water, almost able to kill the water of all the harmful substances, such as iron, manganese, chromium, sulfate, phenol, benzene, oxides, etc., but also decomposition of organic matter and algae, and so on.