First, the disinfection and sterilization performance of chlorine dioxide
Chlorine dioxide is the only efficient disinfectant among chlorine-containing disinfectants recognized internationally. It can kill all microorganisms, including bacterial propagules, bacterial spores, fungi, mycobacteria and viruses, and these bacteria will not produce drug resistance. Chlorine dioxide has strong adsorption and permeability to microbial cell walls, which can effectively oxidize sulfhydryl-containing enzymes in cells, and quickly inhibit the synthesis of microbial protein, thus destroying microorganisms.
1, efficient and powerful. Among the commonly used disinfectants, the concentration of ClO2 needed to achieve the same sterilization effect in the same time is the lowest. The concentration of ClO2 required to kill heterotrophic bacteria is only 1/2 of that of Cl2. ClO _ 2 is more than 5 times more effective than Cl2 in killing Escherichia coli in surface water. Chlorine dioxide has a stronger killing effect on spores than chlorine.
2. Fast and lasting. After chlorine dioxide is dissolved in water, it basically does not react with water, and there is no dimerization or polymerization state. Its diffusion speed and permeability in water are faster than chlorine, especially at low concentration. When the bacterial concentration is 105~ 106/mL, 0.5ppm chlorine dioxide can kill more than 99% heterotrophic bacteria after 5 minutes. However, the highest sterilization rate of 0.5ppm Cl2 can only reach 75%. The experiment showed that the killing rate of 0.5ppm chlorine dioxide to heterotrophic bacteria remained above 99% within 65438 02 hours, and decreased to 86.3% after 24 hours.
3, broad-spectrum sterilization. Chlorine dioxide is a broad-spectrum disinfectant, which has a good killing effect on all pathogenic microorganisms transmitted by water. Chlorine dioxide can kill not only common bacteria, but also spores, viruses, heterotrophic bacteria, iron bacteria, sulfate-reducing bacteria and fungi, and it is not easy to produce drug resistance, especially for typhoid fever, hepatitis A, hepatitis B, poliomyelitis and HIV. Chlorine dioxide can inactivate virus more effectively than ozone and chlorine. Low dose chlorine dioxide also has a strong insecticidal effect.
4. Non-toxic and non-irritating. The acute oral toxicity test showed that chlorine dioxide disinfectant was actually a non-toxic product, and the accumulation test concluded that it was a weak accumulation substance. The water disinfected with it will not damage oral mucosa, skin mucosa and scalp, and it is absolutely safe in acute toxicity and genetic toxicology.
5. Safe and extensive. Chlorine dioxide does not react with organic substances in water to produce carcinogens such as trihalomethane, and has no carcinogenic, teratogenic and mutagenic effects on cells, sperm and chromosomes of higher animals. ClO2 mainly detoxifies reducing anions, cations and oxidation (H2S, SO32-, CN-, Mn2+), and mainly oxidizes and degrades small molecular compounds containing oxygen groups. So far, these products have been proved to be non-toxic, and the amount of chlorine dioxide is extremely low, so disinfection with chlorine dioxide is very safe and there is no residual poison. Its safety was rated as AI level by the World Health Organization (WHO).
As a strong oxidant, chlorine dioxide has many functions, such as algae removal, mud removal, corrosion prevention, mildew prevention, preservation, deodorization, chlorination, bleaching and so on. , and widely used.
After long-term scientific experiments and repeated argumentation by the US Food and Drug Administration (FDA) and the US Environmental Protection Agency (EPA), chlorine dioxide disinfectant tested the treatment effect of chlorine dioxide on drinking water, and was confirmed as an ideal medicament for sterilization, detoxification and deodorization in medical care, food processing, food (meat, aquatic products, fruits and vegetables) preservation, environment, drinking water, industrial circulation and sewage treatment. It is an international drug.
Second, the scope of application of chlorine dioxide inactivation disinfectant
(1) Disinfection of living, drinking water and tap water in various occasions;
(2) Disinfection of tableware and sanitary facilities in restaurants, hotels, families and stalls and disinfection of air environment;
(3) Final sterilization of equipment, pipelines and containers in food and beverage factories and fermentation industries;
(4) Final sterilization of equipment, pipelines and containers in dairy factories, slaughterhouses and fermentation industries;
(5) sterilization and disinfection of hospital sewage;
(6) Sterilization and disinfection of circulating water and bath water in swimming pools;
(7) Disinfection, sterilization, deodorization and mildew prevention of medical, sanitary and clinical instruments;
(8) Preservation of families, hotels, restaurants, fruits, vegetables and fish food, final washing and disinfection and sanitary ware disinfection;
(9) Secondary disinfection treatment of high-rise building water supply;
(10) Prepare various oral disinfectants, deodorizing liquids and wound cleaning liquids;
(1 1) Cleaning, disinfection and deodorization of ambient air in public places, refrigerators, cold storage rooms, offices, dormitories, carriages and air conditioning and ventilation systems. It can also be used for sterilization and disinfection of patients' homes, wards and articles;
(12) Prevention and treatment of fish and shrimp diseases, disinfection and oxygenation of pond water, killing of hepatitis A virus of Scapharca subcrenata and sterilization and preservation of mushroom production. To achieve the effects of disease prevention, yield increase and quality improvement;
(13) Disinfect to control the pollution of miscellaneous bacteria and Escherichia coli during the processing of fish and shrimp and keep them fresh;
(14) disinfection of livestock and poultry farms, drinking water and cocoon breeding equipment;
(15) Sterilization and deodorization in reclaimed water reuse;
(16) Flour and various food bleaches;
(17) bleaching chemicals in papermaking and printing and dyeing industries;
(18) algae removal and sterilization of industrial circulating cooling water;
Chlorine dioxide (19) is used as a plugging removal agent in water injection oil production, which can completely oxidize the organic biomass and any polymer residue blocking the rock formation.
Disinfection principle and application of chlorine dioxide
That is, Cl2 reacts with Ca(OH)2 to generate Ca(ClO)2, in which hypochlorite is bleaching.