Related accessories: Stationary ozone air purification equipment.doc
Application of ozone to air microbial sterilization
Ozone disinfection: Ozone is composed of three oxygen atoms. It is an allotrope of oxygen. Its molecular formula is O3, its molecular weight is 48. Under normal temperature and pressure, O3 is a light blue gas with a special astringent taste. At the same time, it has a "fresh" odor. At normal temperature, the ozone is unstable and can be decomposed into O2 and monoatomic O by itself. The two monoatomic atoms O can be combined into O2. The monooxygen atom is extremely active and highly oxidizing. Decomposition function, can quickly disinfect, sterilize and oxidize organic matter, inorganic substances and so on. Its oxidizing ability is twice as high as that of chlorine, the reaction is fast, the sterilization speed is 600-3000 times faster than chlorine, and bacteria and viruses can be killed within a few seconds.
Ozone has a strong ability to decompose, quickly and powerfully kill various bacteria, pathogenic microorganisms, viral fungi and protozoa in the water, air and the first surface. Ozone treatment has the advantages of fast reaction speed, high efficiency, no residue, no secondary pollution. Ozone sterilization mainly relies on the strong oxidizing ability of monoatomic oxygen (O) hydroxyl (OH) produced after decomposition to produce a single oxygen atom or dissolved in water. The ozone first reacts with the lipid double bonds of the cell wall and cell membrane. The cell wall and cell membrane enter the Cell. It acts on the outer shell lipoprotein and the inner surface fat and candy meat to change the permeability of the inner membrane of the cell, causing the inner membrane to leak out, and finally causing the cells to dissolve and die. Ozone is a strong oxidant and belongs to the peroxide disinfectant in disinfection. It has a broad-spectrum and high-efficiency bactericidal effect. Ozone has a strong killing effect on airborne microorganisms. Ozone below the allowable concentration (0.2mg/m) has good bactericidal effect on general bacterial propagules. It has been reported that ozone is used to disinfect the ward air and achieve satisfactory results. 30mg is used. /m concentration of ozone, for 15 minutes, the kill rate of natural bacteria reached 92% or more, for Staphylococcus aureus in aerosol, with 0.12mg / m of ozone, 30 minutes, the kill rate can reach More than 99.9%, for the Bacillus subtilis black variant spores in the aerosol with 5.67mg / m of ozone, 60 minutes of action, the kill rate can reach more than 99%. The method of treating bacteria by ozone is to directly oxidize the cell body of the bacteria, that is, to destroy the gene of the DNA and achieve the inhibitory effect.
1. Uses: Widely used in food workshops, medical workshops, hospitals and other intensive disinfection; disinfection, sterilization, deodorization, prevention and treatment of diseases in families, hotels, restaurants, offices, schools, kindergartens, entertainment places, public places, etc.
2, the working principle: the use of high-frequency high-voltage power supply gap corona discharge, to achieve O2+O → O3, a dedicated fan to send O3 gas.
3, characteristics: a, to meet the pharmaceutical industry GMP certification, in line with food export health standards, extend the shelf life of food and the effective period of medicine; sterilization and disinfection without residue, no dead ends. b. Mechatronics technology, arbitrarily set the sterilization time.
4. Units and conversion units of ozone concentration in the air: a. Concentration units: ppm and mg/m3 b, mutual conversion: 1ppm=1.963mg/m3
5. There are basically two types of air-type ozone generators: a. Directly placed in the room (clean area) b, placed in the central air-conditioning system
6, air sterilization treatment standards: National Drug Administration "pharmaceutical production quality management standards" production workshop air level reference data food industry can refer to the pharmaceutical industry to implement ordinary household and public places sterilization can refer to the 300,000-level standard. Hospital public places should refer to the 100 standard.