Water application of ozone solubility in the 0.1mg / L ~ 10mg / L between. Low value as the minimum concentration of water disinfection and purification requirements, high value as the "ozone water disinfectant" can be achieved concentration value.
Tap water ozone open, the international conventional standards for the solubility value of 0.4mg/L, keep 4 minutes, that is, the CT value of 1.6.
The remaining ozone concentration in the water remains in the 0.1-0.5mg/L role of 5-10min up to the purpose of disinfection.
Ozone water disinfection and sterilization is rapid, disinfection occurs in an instant. Once the concentration of ozone in water, in 0.5 ~ 1 minute to kill bacteria, in the concentration of 4mg / L, in 1 minute, the hepatitis B virus inactivation rate of 100%.
Herbold reported: 20 ℃ conditions, the concentration of ozone in the water up to 0.43mg / L, can be 100% killed E. coli, 10 ℃ only 0.36mg / L can be all killed.
Ozone concentration of 0.25 ~ 38mg / L, only a few seconds or minutes to completely inactivate the hepatitis A virus (HAV)
Mineral water in the ozone solubility of 0.4 ~ 0.5mg / L, you can meet the germicidal quality requirements. Reasonable amount of ozone put 1.5 ~ 2.0mg / L.
Bottled water treatment should be up to 0.3 ~ 0.5mg / L of ozone solubility value, the requirements of the ozone should be added to meet the amount of 1m3 water 2gO3 generation. According to practical experience, the concentration of ozone generation is higher than 8mg / L is easy to reach the concentration.
Expanded
Ozone sterilization can also be used in which field
Indoor disinfection field
Ozone has the ability to kill bacteria and viruses contained in the air, there is a function of the reduction of dust, so that the air is fresh and natural, and play a fatigue, refreshing and revitalizing the effect of the brain.
Fruit and vegetable preservation and disinfection field
Fruit and vegetable transportation, storage has been an urgent problem, improper handling will bring great losses. It is reported that every year in China, 30-40% of the vegetables due to improper storage and transportation and localized backlog and become garbage. Ozone and negative ions *** with the role of excellent fruit and vegetable preservation, so the use of ozone technology can greatly extend the preservation of fruits and vegetables, storage time, to expand the scope of its transportation.
In addition, ozone technology can also be used for sterilization in the treatment of clean vegetables. Japan's Kawashima Harima Heavy Industries developed the use of ozone water to automatically sterilize the vegetable system. According to its research, low concentration of ozone water sterilization efficiency, no secondary pollution.
Through experiments comparing ozone water and sodium hypochlorite on the very easy to reproduce in the vegetables of chytridiomycetes sterilization effect found that the concentration of 50 ppm sodium hypochlorite sterilization 2 minutes after the bacteria have not been killed, while the concentration of 5 ppm ozone water sterilization 20 seconds after 99.9% of the bacteria were killed. Ozone water will become the best vegetable sterilizer.
At the same time, ozone water can effectively oxidize pesticides on the surface of vegetables and fruits, reducing pesticide residues and protecting health.
Environmental resources protection field
The main reasons for water crisis are waste, pollution, uneven distribution of water and irrigation, in which about 550 million cubic meters/year of water bodies are polluted. Ozone as a highly effective sterilizing and detoxifying agent has naturally attracted many scientists to study the technology of applying it in the field of water pollution treatment and saving industrial water.
The U.S. Groundwater Technologies Inc. has been successful in testing ozonation technology to treat soil and groundwater pollution. The company's tests show that the odor oxidation technology can be eliminated within a few months 35 ~ 98% of the toxic substances, while these toxic substances with volatile, biodegradation and other traditional methods to deal with the time required for several years.
Some studies have shown that the use of ozone with ultraviolet irradiation can be oxidized to decompose toxic hydrocarbons in industrial wastewater, while removing heavy metal ions.
This method has achieved a purification rate of 95% in the treatment of wastewater from the dyestuffs industry, an increase of 25% over traditional methods. The treated industrial wastewater can be recycled, avoiding soil and water pollution and saving industrial water. In developed countries, ozone technology has also been applied in the treatment of drinking water, seawater desalination and other aspects.
In addition to these areas, ozone technology is also used in aquaculture, fisheries, agriculture, food processing industry and other fields.
Medical and health care
Hospitals are places for treating diseases, but because most of the people who go to hospitals are critically ill, their inflammation is at its peak, and the harmful germs from the patients are very easy to be dispersed in the air.
Therefore, hospitals are also places where diseases can easily be contracted. So it's not uncommon to see hospitals causing cross-infections. Hospital surgery and nursing operations before the hands of doctors or nurses and surgical equipment disinfection is also one of the urgent need to solve the problem. Ozone with high efficiency and rapid sterilization effect in the hospital environment disinfection, preoperative disinfection and other aspects of great use.
For example, Japanese scientists have studied ozone water disinfection for hospitals. According to the results of their research, the use of ozone water on the hospital before surgery doctors, nurses, hands disinfection, can kill all the bacteria, not only the time is very short, but also its disinfection effect is other iodine disinfectants can not be compared. It takes at least 10 minutes to perform the same sterilization operation traditionally.
In the hospital most likely to cause infection of yellow staphylococcus and Pseudomonas aeruginosa, etc. in the ozone water in just 5 seconds to kill all, its bactericidal power far more than alcohol and chlorine. And ozone water has a reliable safety, regular use will not hurt the skin, even if accidentally drink will not be poisoned.
Ozone can also be used for treatment. Such as Russia has developed a special hydraulic fluid to heal wounds, the basic method is to use a mist of ozone-rich physiological solution under high pressure to rinse the wound, the water flow like a scalpel to the wound in the pus and blood, necrotic tissue and bacterial decomposition of the material to remove, and at the same time to kill the wound surface of the disease-causing microorganisms.
Then change the structure of the "ozone knife", continue to increase the pressure of the liquid, so that the ozonized solution penetrates into the inflamed tissue a few millimeters to 3 centimeters deep, and increase the oxygen to kill the deeper pathogenic bacteria. Reportedly, this method has been used to treat 200 patients, they are some diabetes, sepsis, vascular arteriosclerosis and should not be carried out the usual surgical procedures, the results of these patients' wounds are completely healed.
Source: Baidu Encyclopedia - Ozone
Source: Baidu Encyclopedia - Ozone Bacteria Sterilization